Merge branch 'master' into vec4-stack

Fix compile warnings on RHEL5
Correctly pass if a darray element is signed or unsigned.
2026-08-23 22:36:54 +02:00 · 2014-12-06 08:24:46 -08:00 · 2014-12-05 19:03:07 -08:00 · 2014-12-05 18:23:02 -08:00 · 2014-12-05 18:00:08 -08:00 · 2014-12-05 13:55:51 -08:00
641 changed files with 66108 additions and 27069 deletions
@@ -13,6 +13,7 @@ tags
 TAGS
 cscope.*
 *.patch
+*.orig

 # Object files and libraries
 *.[oa]
@@ -28,6 +29,11 @@ Makefile

 /_pli_types.h
 config.h
+/tgt-pcb/pcb_config.h
+/tgt-pcb/fp.cc
+/tgt-pcb/fp.h
+/tgt-pcb/fp.output
+/tgt-pcb/fp_lex.cc
 /tgt-vvp/vvp_config.h
 /tgt-vhdl/vhdl_config.h
 /vpi/vpi_config.h
@@ -45,6 +51,8 @@ dep
 *.vpi
 /cadpli/cadpli.vpl

+/tgt-blif/Makefile
+
 # lex, yacc and gperf output
 /driver/cflexor.c
 /driver/cfparse.c
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -1,7 +1,7 @@
-#ifndef __AStatement_H
-#define __AStatement_H
+#ifndef IVL_AStatement_H
+#define IVL_AStatement_H
 /*
- * Copyright (c) 2008 Stephen Williams ([email protected])
+ * Copyright (c) 2008-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <map>
@@ -82,4 +82,4 @@ class AProcess : public LineInfo {
      AProcess& operator= (const AProcess&);
 };

-#endif
+#endif /* IVL_AStatement_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -1,7 +1,7 @@
-#ifndef __Attrib_H
-#define __Attrib_H
+#ifndef IVL_Attrib_H
+#define IVL_Attrib_H
 /*
- * Copyright (c) 2000-2009 Stephen Williams ([email protected])
+ * Copyright (c) 2000-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "StringHeap.h"
@@ -57,4 +57,4 @@ class Attrib {
      Attrib& operator= (const Attrib&);
 };

-#endif
+#endif /* IVL_Attrib_H */
@@ -1,12 +1,12 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991

- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

-			    Preamble
+                            Preamble

  The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -15,7 +15,7 @@ software--to make sure the software is free for all its users.  This
 General Public License applies to most of the Free Software
 Foundation's software and to any other program whose authors commit to
 using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
+the GNU Lesser General Public License instead.)  You can apply it to
 your programs, too.

  When we speak of free software, we are referring to freedom, not
@@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all.

  The precise terms and conditions for copying, distribution and
 modification follow.
-
-		    GNU GENERAL PUBLIC LICENSE
+
+                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
@@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions:
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)
-
+
 These requirements apply to the modified work as a whole.  If
 identifiable sections of that work are not derived from the Program,
 and can be reasonably considered independent and separate works in
@@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent
 access to copy the source code from the same place counts as
 distribution of the source code, even though third parties are not
 compelled to copy the source along with the object code.
-
+
  4. You may not copy, modify, sublicense, or distribute the Program
 except as expressly provided under this License.  Any attempt
 otherwise to copy, modify, sublicense or distribute the Program is
@@ -225,7 +225,7 @@ impose that choice.

 This section is intended to make thoroughly clear what is believed to
 be a consequence of the rest of this License.
-
+
  8. If the distribution and/or use of the Program is restricted in
 certain countries either by patents or by copyrighted interfaces, the
 original copyright holder who places the Program under this License
@@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.

-			    NO WARRANTY
+                            NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.

-		     END OF TERMS AND CONDITIONS
-
-	Appendix: How to Apply These Terms to Your New Programs
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@@ -291,7 +291,7 @@ convey the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) 19yy  <name of author>
+    Copyright (C) <year>  <name of author>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -303,16 +303,16 @@ the "copyright" line and a pointer to where the full notice is found.
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 Also add information on how to contact you by electronic and paper mail.

 If the program is interactive, make it output a short notice like this
 when it starts in an interactive mode:

-    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
@@ -335,5 +335,5 @@ necessary.  Here is a sample; alter the names:
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
+library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001-2010 Stephen Williams ([email protected])
+ * Copyright (c) 2001-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "config.h"
@@ -22,30 +22,32 @@
 # include  <iostream>
 # include  <cstring>
 # include  <cstdlib>
-# include  <climits>

+using namespace std;

 hname_t::hname_t()
 {
-      number_ = INT_MIN;
 }

 hname_t::hname_t(perm_string text)
+: name_(text)
 {
-      name_ = text;
-      number_ = INT_MIN;
 }

 hname_t::hname_t(perm_string text, int num)
+: name_(text), number_(1)
+{
+      number_[0] = num;
+}
+
+hname_t::hname_t(perm_string text, vector<int>&nums)
+: name_(text), number_(nums)
 {
-      name_ = text;
-      number_ = num;
 }

 hname_t::hname_t(const hname_t&that)
+: name_(that.name_), number_(that.number_)
 {
-      name_ = that.name_;
-      number_ = that.number_;
 }

 hname_t& hname_t::operator = (const hname_t&that)
@@ -55,24 +57,50 @@ hname_t& hname_t::operator = (const hname_t&that)
      return *this;
 }

-bool operator < (const hname_t&l, const hname_t&r)
+bool hname_t::operator < (const hname_t&r) const
 {
-      int cmp = strcmp(l.peek_name(), r.peek_name());
+      int cmp = strcmp(name_, r.name_);
      if (cmp < 0) return true;
      if (cmp > 0) return false;
-      if (l.has_number() && r.has_number())
-	    return l.peek_number() < r.peek_number();
-      else
-	    return false;
+
+	// The text parts are equal, so compare then number
+	// parts. Finish as soon as we find one to be less or more
+	// than the other.
+      size_t idx = 0;
+      while (number_.size() > idx || r.number_.size() > idx) {
+
+	      // Ran out of l numbers, so less.
+	    if (number_.size() <= idx)
+		  return true;
+
+	      // Ran out of r numbers, so greater.
+	    if (r.number_.size() <= idx)
+		  return false;
+
+	    if (number_[idx] < r.number_[idx])
+		  return true;
+
+	    if (number_[idx] > r.number_[idx])
+		  return false;
+
+	    idx += 1;
+      }
+
+	// Fall-through means that we are equal, including all the
+	// number parts, so not less.
+      return false;
 }

-bool operator == (const hname_t&l, const hname_t&r)
+bool hname_t::operator == (const hname_t&r) const
 {
-      if (l.peek_name() == r.peek_name()) {
-	    if (l.has_number() && r.has_number())
-		  return l.peek_number() == r.peek_number();
-	    else
-		  return true;
+      if (name_ == r.name_) {
+	    if (number_.size() != r.number_.size())
+		  return false;
+
+	    for (size_t idx = 0 ; idx < number_.size() ; idx += 1)
+		  if (number_[idx] != r.number_[idx]) return false;
+
+	    return true;
      }

      return false;
@@ -86,8 +114,8 @@ ostream& operator<< (ostream&out, const hname_t&that)
      }

      out << that.peek_name();
-      if (that.has_number())
-	    out << "[" << that.peek_number() << "]";
+      for (size_t idx = 0 ; idx < that.number_.size() ; idx += 1)
+	    out << "[" << that.number_[idx] << "]";

      return out;
 }
@@ -1,7 +1,7 @@
-#ifndef __HName_H
-#define __HName_H
+#ifndef IVL_HName_H
+#define IVL_HName_H
 /*
- * Copyright (c) 2001-2010 Stephen Williams ([email protected])
+ * Copyright (c) 2001-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,18 +16,15 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <iostream>
 # include  <list>
+# include  <vector>
 # include  "StringHeap.h"
-# include  <climits>
-#ifdef __GNUC__
-#if __GNUC__ > 2
-using namespace std;
-#endif
-#endif
+
+# include  <cassert>

 /*
 * This class represents a component of a Verilog hierarchical name. A
@@ -39,27 +36,33 @@ using namespace std;

 class hname_t {

+      friend ostream& operator<< (ostream&out, const hname_t&that);
+
    public:
      hname_t ();
      explicit hname_t (perm_string text);
      explicit hname_t (perm_string text, int num);
+      explicit hname_t (perm_string text, std::vector<int>&nums);
      hname_t (const hname_t&that);
      ~hname_t();

      hname_t& operator= (const hname_t&);

+      bool operator == (const hname_t&that) const;
+      bool operator <  (const hname_t&that) const;
+
 	// Return the string part of the hname_t.
      perm_string peek_name(void) const;

-      bool has_number() const;
-      int peek_number() const;
+      size_t has_numbers() const;
+      int peek_number(size_t idx) const;

    private:
      perm_string name_;
 	// If the number is anything other than INT_MIN, then this is
 	// the numeric part of the name. Otherwise, it is not part of
 	// the name at all.
-      int number_;
+      std::vector<int> number_;

    private: // not implemented
 };
@@ -73,18 +76,17 @@ inline perm_string hname_t::peek_name(void) const
      return name_;
 }

-inline int hname_t::peek_number() const
+inline int hname_t::peek_number(size_t idx) const
 {
-      return number_;
+      assert(number_.size() > idx);
+      return number_[idx];
 }

-inline bool hname_t::has_number() const
+inline size_t hname_t::has_numbers() const
 {
-      return number_ != INT_MIN;
+      return number_.size();
 }

-extern bool operator <  (const hname_t&, const hname_t&);
-extern bool operator == (const hname_t&, const hname_t&);
 extern ostream& operator<< (ostream&, const hname_t&);

 inline bool operator != (const hname_t&l, const hname_t&r)
@@ -102,4 +104,4 @@ inline ostream& operator<< (ostream&out, const list<hname_t>&ll)
      return out;
 }

-#endif
+#endif /* IVL_HName_H */
@@ -12,9 +12,8 @@
 #
 #    You should have received a copy of the GNU Library General Public
 #    License along with this program; if not, write to the Free
-#    Software Foundation, Inc.,
-#    59 Temple Place - Suite 330
-#    Boston, MA 02111-1307, USA
+#    Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#    Boston, MA 02110-1301, USA.
 #
 SHELL = /bin/sh

@@ -39,7 +38,7 @@ srcdir = @srcdir@
 datarootdir = @datarootdir@

 SUBDIRS = ivlpp vhdlpp vvp vpi libveriuser cadpli tgt-null tgt-stub tgt-vvp \
-          tgt-vhdl tgt-vlog95 driver
+          tgt-vhdl tgt-vlog95 tgt-pcb tgt-blif tgt-sizer driver
 # Only run distclean for these directories.
 NOTUSED = tgt-fpga tgt-pal tgt-verilog

@@ -67,9 +66,13 @@ mandir = @mandir@

 dllib=@DLLIB@

-CC = @CC@
+# For a cross compile these defines will need to be set accordingly.
 HOSTCC = @CC@
+HOSTCFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CC@ @CFLAGS@
+
+CC = @CC@
 CXX = @CXX@
+DLLTOOL = @DLLTOOL@
 INSTALL = @INSTALL@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -83,14 +86,15 @@ GIT = @GIT@
 ifeq (@srcdir@,.)
 INCLUDE_PATH = -I. -Ilibmisc
 else
-INCLUDE_PATH = -I. -Ilibmisc -I$(srcdir) -I$(srcdir)/libmisc
+INCLUDE_PATH = -I. -I$(srcdir) -I$(srcdir)/libmisc
 endif

 CPPFLAGS = @DEFS@ $(INCLUDE_PATH) @CPPFLAGS@
-CFLAGS = @WARNING_FLAGS@ @CFLAGS@
+CFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CC@ @CFLAGS@
 CXXFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CXX@ @CXXFLAGS@
 PICFLAGS = @PICFLAG@
 LDFLAGS = @rdynamic@ @LDFLAGS@
+CTARGETFLAGS = @CTARGETFLAGS@

 # Source files in the libmisc directory
 M = LineInfo.o StringHeap.o
@@ -100,16 +104,21 @@ FF = cprop.o nodangle.o synth.o synth2.o syn-rules.o

 O = main.o async.o design_dump.o discipline.o dup_expr.o elaborate.o \
    elab_expr.o elaborate_analog.o elab_lval.o elab_net.o \
-    elab_scope.o elab_sig.o elab_sig_analog.o emit.o eval.o eval_attrib.o \
+    elab_scope.o elab_sig.o elab_sig_analog.o elab_type.o \
+    emit.o eval.o eval_attrib.o \
    eval_tree.o expr_synth.o functor.o lexor.o lexor_keyword.o link_const.o \
-    load_module.o netlist.o netmisc.o net_analog.o net_assign.o net_design.o \
-    netenum.o net_event.o net_expr.o net_func.o net_link.o net_modulo.o \
+    load_module.o netlist.o netmisc.o nettypes.o net_analog.o net_assign.o \
+    net_design.o netclass.o netdarray.o \
+    netenum.o netparray.o netqueue.o netscalar.o netstruct.o netvector.o \
+    net_event.o net_expr.o net_func.o \
+    net_func_eval.o net_link.o net_modulo.o \
    net_nex_input.o net_nex_output.o net_proc.o net_scope.o net_tran.o \
    net_udp.o pad_to_width.o parse.o parse_misc.o pform.o pform_analog.o \
-    pform_disciplines.o pform_dump.o pform_types.o \
+    pform_disciplines.o pform_dump.o pform_package.o pform_pclass.o \
+    pform_class_type.o pform_string_type.o pform_struct_type.o pform_types.o \
    symbol_search.o sync.o sys_funcs.o verinum.o verireal.o target.o \
-    Attrib.o HName.o Module.o PDelays.o PEvent.o PExpr.o PGate.o \
-    PGenerate.o PScope.o PSpec.o PTask.o PUdp.o PFunction.o PWire.o \
+    Attrib.o HName.o Module.o PClass.o PDelays.o PEvent.o PExpr.o PGate.o \
+    PGenerate.o PPackage.o PScope.o PSpec.o PTask.o PUdp.o PFunction.o PWire.o \
    Statement.o AStatement.o $M $(FF) $(TT)

 all: dep config.h _pli_types.h version_tag.h ivl@EXEEXT@ version.exe iverilog-vpi.man
@@ -120,7 +129,7 @@ all: dep config.h _pli_types.h version_tag.h ivl@EXEEXT@ version.exe iverilog-vp
 ifeq (@MINGW32@,yes)
 all: dosify.exe
 dosify.exe: $(srcdir)/dosify.c
-	$(CC) -o dosify.exe $(srcdir)/dosify.c
+	$(HOSTCC) $(HOSTCFLAGS) -o dosify.exe $(srcdir)/dosify.c
 endif

 # This rule rules the compiler in the trivial hello.vl program to make
@@ -146,8 +155,8 @@ endif
 clean:
 	$(foreach dir,$(SUBDIRS),$(MAKE) -C $(dir) $@ && ) true
 	rm -f *.o parse.cc parse.h lexor.cc
-	rm -f ivl.exp iverilog-vpi.man iverilog-vpi.pdf iverilog-vpi.ps parse.output
-	rm -f syn-rules.output dosify.exe ivl@EXEEXT@ check.vvp
+	rm -f ivl.exp iverilog-vpi.man iverilog-vpi.pdf iverilog-vpi.ps
+	rm -f parse.output syn-rules.output dosify.exe ivl@EXEEXT@ check.vvp
 	rm -f lexor_keyword.cc libivl.a libvpi.a iverilog-vpi syn-rules.cc
 	rm -rf dep
 	rm -f version.exe
@@ -165,8 +174,10 @@ endif
 	rm -rf autom4te.cache

 cppcheck: $(O:.o=.cc) $(srcdir)/dosify.c $(srcdir)/version.c
-	cppcheck --enable=all -f --suppressions $(srcdir)/cppcheck.sup \
-	         $(INCLUDE_PATH) $^
+	cppcheck --enable=all -f --suppressions-list=$(srcdir)/cppcheck.sup \
+	         -UYYPARSE_PARAM -UYYPRINT -Ushort -Usize_t -Uyyoverflow \
+	         -UYYTYPE_INT8 -UYYTYPE_INT16 -UYYTYPE_UINT8 -UYYTYPE_UINT16 \
+	         --relative-paths=$(srcdir) $(INCLUDE_PATH) $^

 cppcheck-all:
 	$(foreach dir,$(SUBDIRS),$(MAKE) -C $(dir) cppcheck && ) true
@@ -203,7 +214,7 @@ ifeq (@WIN32@,yes)
 # that really exports the things that the import library imports.
 ivl@EXEEXT@: $O $(srcdir)/ivl.def
 	$(CXX) -o ivl@EXEEXT@ $O $(dllib) @EXTRALIBS@
-	dlltool --dllname ivl@EXEEXT@ --def $(srcdir)/ivl.def \
+	$(DLLTOOL) --dllname ivl@EXEEXT@ --def $(srcdir)/ivl.def \
 		--output-lib libivl.a --output-exp ivl.exp
 	$(CXX) $(LDFLAGS) -o ivl@EXEEXT@ ivl.exp $O $(dllib) @EXTRALIBS@
 else
@@ -221,13 +232,14 @@ iverilog-vpi: $(srcdir)/iverilog-vpi.sh Makefile
 	    -e 's;@IVCXX@;$(CXX);' \
 	    -e 's;@IVCFLAGS@;$(CFLAGS);' \
 	    -e 's;@IVCXXFLAGS@;$(CXXFLAGS);' \
+	    -e 's;@IVCTARGETFLAGS@;$(CTARGETFLAGS);' \
 	    -e 's;@INCLUDEDIR@;$(includedir);' \
 	    -e 's;@LIBDIR@;@libdir@;' $< > $@
 	chmod +x $@
 endif

 version.exe: $(srcdir)/version.c $(srcdir)/version_base.h version_tag.h
-	$(HOSTCC) @WARNING_FLAGS@ -o version.exe -I. -I$(srcdir) $(srcdir)/version.c
+	$(HOSTCC) $(HOSTCFLAGS) -o version.exe -I. -I$(srcdir) $(srcdir)/version.c

 %.o: %.cc config.h
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
@@ -240,20 +252,22 @@ lexor.o: lexor.cc parse.h

 parse.o: parse.cc

-parse.cc parse.h: $(srcdir)/parse.y
-	$(YACC) --verbose -t -p VL -d -o parse.cc $(srcdir)/parse.y
-	mv parse.cc.h parse.h 2>/dev/null || mv parse.hh parse.h
+# Build this in two steps to avoid parallel build issues (see pr3462585)
+parse.cc: $(srcdir)/parse.y
+	$(YACC) --verbose -t -p VL -d -o $@ $<
+parse.h: parse.cc
+	mv parse.cc.h $@ 2>/dev/null || mv parse.hh $@

 syn-rules.cc: $(srcdir)/syn-rules.y
-	$(YACC) --verbose -p syn_ -o syn-rules.cc $(srcdir)/syn-rules.y
+	$(YACC) --verbose -t -p syn_ -o $@ $<

 lexor.cc: $(srcdir)/lexor.lex
-	$(LEX) -s -olexor.cc $(srcdir)/lexor.lex
+	$(LEX) -s -t $< > $@

 lexor_keyword.o: lexor_keyword.cc parse.h

 lexor_keyword.cc: $(srcdir)/lexor_keyword.gperf
-	gperf -o -i 7 -C -k 1-4,6,9,$$ -L ANSI-C -H keyword_hash -N check_identifier -t $(srcdir)/lexor_keyword.gperf > lexor_keyword.cc || (rm -f lexor_keyword.cc ; false)
+	gperf -o -i 7 -C -k 1-4,6,9,$$ -H keyword_hash -N check_identifier -t $(srcdir)/lexor_keyword.gperf > lexor_keyword.cc || (rm -f lexor_keyword.cc ; false)

 iverilog-vpi.man: $(srcdir)/iverilog-vpi.man.in version.exe
 	./version.exe `head -1 $(srcdir)/iverilog-vpi.man.in`'\n' > $@
@@ -368,9 +382,9 @@ uninstall:
 	-rmdir "$(DESTDIR)$(libdir)/ivl$(suffix)"
 	for f in verilog$(suffix) iverilog-vpi$(suffix) gverilog$(suffix)@EXEEXT@; \
 	    do rm -f "$(DESTDIR)$(bindir)/$$f"; done
-	for f in ivl_target.h vpi_user.h _pli_types.h acc_user.h veriuser.h; \
+	for f in ivl_target.h vpi_user.h _pli_types.h sv_vpi_user.h acc_user.h veriuser.h; \
 	    do rm -f "$(DESTDIR)$(includedir)/$$f"; done
-	-test X$(suffix) = X || rmdir "$(DESTDIR)/$(includedir)"
+	-test X$(suffix) = X || rmdir "$(DESTDIR)$(includedir)"
 	rm -f "$(DESTDIR)$(mandir)/man1/iverilog-vpi$(suffix).1" "$(DESTDIR)$(prefix)/iverilog-vpi$(suffix).pdf"


@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -27,11 +27,12 @@
 list<Module::named_expr_t> Module::user_defparms;

 /* n is a permallocated string. */
-Module::Module(perm_string n)
-: PScope(n)
+Module::Module(LexicalScope*parent, perm_string n)
+: PScopeExtra(n, parent)
 {
      library_flag = false;
      is_cell = false;
+      program_block = false;
      uc_drive = UCD_NONE;
      timescale_warn_done = false;
      time_unit = 0;
@@ -89,6 +90,22 @@ unsigned Module::find_port(const char*name) const
      return ports.size();
 }

+perm_string Module::get_port_name(unsigned idx) const
+{
+
+      assert(idx < ports.size());
+      if (ports[idx] == 0) {
+              /* It is possible to have undeclared ports. These
+                 are ports that are skipped in the declaration,
+                 for example like so: module foo(x ,, y); The
+                 port between x and y is unnamed and thus
+                 inaccessible to binding by name. */
+            return perm_string::literal("");
+      }
+      return ports[idx]->name;
+}
+
+

 PGate* Module::get_gate(perm_string name)
 {
@@ -1,7 +1,7 @@
-#ifndef __Module_H
-#define __Module_H
+#ifndef IVL_Module_H
+#define IVL_Module_H
 /*
- * Copyright (c) 1998-2010 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */


@@ -49,7 +49,7 @@ class NetScope;
 * therefore the handle for grasping the described circuit.
 */

-class Module : public PScope, public LineInfo {
+class Module : public PScopeExtra, public LineInfo {

 	/* The module ports are in general a vector of port_t
 	   objects. Each port has a name and an ordered list of
@@ -65,7 +65,7 @@ class Module : public PScope, public LineInfo {
    public:
 	/* The name passed here is the module name, not the instance
 	   name. This make must be a permallocated string. */
-      explicit Module(perm_string name);
+      explicit Module(LexicalScope*parent, perm_string name);
      ~Module();

 	/* Initially false. This is set to true if the module has been
@@ -76,13 +76,18 @@ class Module : public PScope, public LineInfo {

      bool is_cell;

+	/* This is true if the module represents a program block
+	   instead of a module/cell. Program blocks have content
+	   restrictions and slightly modify scheduling semantics. */
+      bool program_block;
+
      enum UCDriveType { UCD_NONE, UCD_PULL0, UCD_PULL1 };
      UCDriveType uc_drive;

-	/* specparams are simpler than other params, in that they have
-	   no type information. They are merely constant
-	   expressions. */
-      map<perm_string,PExpr*>specparams;
+	/* specparams are simpler than other parameters, in that they
+	   can have a range, but not an explicit type. The restrictions
+	   are enforced by the parser. */
+      map<perm_string,param_expr_t>specparams;

 	/* The module also has defparam assignments which don't create
 	   new parameters within the module, but may be used to set
@@ -112,14 +117,14 @@ class Module : public PScope, public LineInfo {
      bool time_from_timescale;
      bool timescale_warn_done;

-	/* Task definitions within this module */
-      map<perm_string,PTask*> tasks;
-      map<perm_string,PFunction*> funcs;
-
 	/* The module has a list of generate schemes that appear in
 	   the module definition. These are used at elaboration time. */
      list<PGenerate*> generate_schemes;

+	/* Nested modules are placed here, and are not elaborated
+	   unless they are instantiated, implicitly or explicitly. */
+      std::map<perm_string,Module*> nested_modules;
+
      list<PSpecPath*> specify_paths;

 	// The mod_name() is the name of the module type.
@@ -131,6 +136,9 @@ class Module : public PScope, public LineInfo {
      const vector<PEIdent*>& get_port(unsigned idx) const;
      unsigned find_port(const char*name) const;

+      // Return port name ("" for undeclared port)
+      perm_string get_port_name(unsigned idx) const;
+
      PGate* get_gate(perm_string name);

      const list<PGate*>& get_gates() const;
@@ -144,6 +152,7 @@ class Module : public PScope, public LineInfo {
      bool elaborate_sig(Design*, NetScope*scope) const;

    private:
+      void dump_specparams_(ostream&out, unsigned indent) const;
      list<PGate*> gates_;

    private: // Not implemented
@@ -151,4 +160,4 @@ class Module : public PScope, public LineInfo {
      Module& operator= (const Module&);
 };

-#endif
+#endif /* IVL_Module_H */
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2012 Stephen Williams ([email protected])
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+# include  "PClass.h"
+
+PClass::PClass(perm_string name, LexicalScope*parent)
+: PScopeExtra(name, parent), type(0)
+{
+}
+
+
+PClass::~PClass()
+{
+}
@@ -0,0 +1,47 @@
+#ifndef IVL_PClass_H
+#define IVL_PClass_H
+/*
+ * Copyright (c) 2012-2014 Stephen Williams ([email protected])
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+# include  "PScope.h"
+# include  "LineInfo.h"
+# include  "StringHeap.h"
+# include  <iostream>
+
+class PChainConstructor;
+
+/*
+ * SystemVerilog supports class declarations with their own lexical
+ * scope, etc. The parser arranges for these to be created and
+ * collected.
+ */
+
+class PClass : public PScopeExtra, public LineInfo {
+
+    public:
+      explicit PClass (perm_string name, LexicalScope*parent);
+      ~PClass();
+
+      void dump(std::ostream&out, unsigned indent) const;
+
+    public:
+      class_type_t*type;
+};
+
+#endif /* IVL_PClass_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -1,7 +1,7 @@
-#ifndef __PDelays_H
-#define __PDelays_H
+#ifndef IVL_PDelays_H
+#define IVL_PDelays_H
 /*
- * Copyright (c) 1999-2010 Stephen Williams ([email protected])
+ * Copyright (c) 1999-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "svector.h"
@@ -72,4 +72,4 @@ class PDelays {

 ostream& operator << (ostream&o, const PDelays&);

-#endif
+#endif /* IVL_PDelays_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -1,7 +1,7 @@
-#ifndef __PEvent_H
-#define __PEvent_H
+#ifndef IVL_PEvent_H
+#define IVL_PEvent_H
 /*
- * Copyright (c) 2000-2004 Stephen Williams ([email protected])
+ * Copyright (c) 2000-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "LineInfo.h"
@@ -51,4 +51,4 @@ class PEvent : public LineInfo {
      PEvent& operator= (const PEvent&);
 };

-#endif
+#endif /* IVL_PEvent_H */
@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 1998-2011 Stephen Williams <[email protected]>
+ * Copyright (c) 1998-2012 Stephen Williams <[email protected]>
+ * Copyright CERN 2013 / Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +15,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -76,6 +77,44 @@ bool PExpr::is_collapsible_net(Design*, NetScope*) const
      return false;
 }

+
+const char* PExpr::width_mode_name(width_mode_t mode)
+{
+      switch (mode) {
+          case PExpr::SIZED:
+            return "sized";
+          case PExpr::UNSIZED:
+            return "unsized";
+          case PExpr::EXPAND:
+            return "expand";
+          case PExpr::LOSSLESS:
+            return "lossless";
+          case PExpr::UPSIZE:
+            return "upsize";
+          default:
+            return "??";
+      }
+}
+
+PEAssignPattern::PEAssignPattern()
+{
+}
+
+PEAssignPattern::PEAssignPattern(const list<PExpr*>&p)
+: parms_(p.size())
+{
+      size_t idx = 0;
+      for (list<PExpr*>::const_iterator cur = p.begin()
+		 ; cur != p.end() ; ++cur) {
+	    parms_[idx] = *cur;
+	    idx += 1;
+      }
+}
+
+PEAssignPattern::~PEAssignPattern()
+{
+}
+
 PEBinary::PEBinary(char op, PExpr*l, PExpr*r)
 : op_(op), left_(l), right_(r)
 {
@@ -107,6 +146,15 @@ PECastSize::~PECastSize()
 {
 }

+PECastType::PECastType(data_type_t*t, PExpr*b)
+: target_(t), base_(b)
+{
+}
+
+PECastType::~PECastType()
+{
+}
+
 PEBComp::PEBComp(char op, PExpr*l, PExpr*r)
 : PEBinary(op, l, r)
 {
@@ -156,7 +204,12 @@ PEBShift::~PEBShift()
 }

 PECallFunction::PECallFunction(const pform_name_t&n, const vector<PExpr *> &parms)
-: path_(n), parms_(parms)
+: package_(0), path_(n), parms_(parms)
+{
+}
+
+PECallFunction::PECallFunction(PPackage*pkg, const pform_name_t&n, const vector<PExpr *> &parms)
+: package_(pkg), path_(n), parms_(parms)
 {
 }

@@ -168,19 +221,29 @@ static pform_name_t pn_from_ps(perm_string n)
      return tmp;
 }

+PECallFunction::PECallFunction(PPackage*pkg, perm_string n, const list<PExpr *> &parms)
+: package_(pkg), path_(pn_from_ps(n)), parms_(parms.size())
+{
+      int tmp_idx = 0;
+      assert(parms_.size() == parms.size());
+      for (list<PExpr*>::const_iterator idx = parms.begin()
+		 ; idx != parms.end() ; ++idx)
+	    parms_[tmp_idx++] = *idx;
+}
+
 PECallFunction::PECallFunction(perm_string n, const vector<PExpr*>&parms)
-: path_(pn_from_ps(n)), parms_(parms)
+: package_(0), path_(pn_from_ps(n)), parms_(parms)
 {
 }

 PECallFunction::PECallFunction(perm_string n)
-: path_(pn_from_ps(n))
+: package_(0), path_(pn_from_ps(n))
 {
 }

 // NOTE: Anachronism. Try to work all use of svector out.
 PECallFunction::PECallFunction(const pform_name_t&n, const list<PExpr *> &parms)
-: path_(n), parms_(parms.size())
+: package_(0), path_(n), parms_(parms.size())
 {
      int tmp_idx = 0;
      assert(parms_.size() == parms.size());
@@ -190,7 +253,7 @@ PECallFunction::PECallFunction(const pform_name_t&n, const list<PExpr *> &parms)
 }

 PECallFunction::PECallFunction(perm_string n, const list<PExpr*>&parms)
-: path_(pn_from_ps(n)), parms_(parms.size())
+: package_(0), path_(pn_from_ps(n)), parms_(parms.size())
 {
      int tmp_idx = 0;
      assert(parms_.size() == parms.size());
@@ -281,6 +344,14 @@ PExpr* PEEvent::expr() const
      return expr_;
 }

+PENull::PENull(void)
+{
+}
+
+PENull::~PENull()
+{
+}
+
 PEFNumber::PEFNumber(verireal*v)
 : value_(v)
 {
@@ -297,16 +368,21 @@ const verireal& PEFNumber::value() const
 }

 PEIdent::PEIdent(const pform_name_t&that)
-: path_(that), no_implicit_sig_(false)
+: package_(0), path_(that), no_implicit_sig_(false)
 {
 }

 PEIdent::PEIdent(perm_string s, bool no_implicit_sig)
-: no_implicit_sig_(no_implicit_sig)
+: package_(0), no_implicit_sig_(no_implicit_sig)
 {
      path_.push_back(name_component_t(s));
 }

+PEIdent::PEIdent(PPackage*pkg, const pform_name_t&that)
+: package_(pkg), path_(that), no_implicit_sig_(true)
+{
+}
+
 PEIdent::~PEIdent()
 {
 }
@@ -346,7 +422,7 @@ void PEIdent::declare_implicit_nets(LexicalScope*scope, NetNet::Type type)
            PWire*net = new PWire(name, type, NetNet::NOT_A_PORT, IVL_VT_LOGIC);
            net->set_file(get_file());
            net->set_lineno(get_lineno());
-            net->set_range(0, 0, SR_NET, true);
+            net->set_range_scalar(SR_NET);
            scope->wires[name] = net;
            if (warn_implicit) {
                  cerr << get_fileline() << ": warning: implicit "
@@ -363,7 +439,7 @@ bool PEIdent::has_aa_term(Design*des, NetScope*scope) const

      const NetExpr*ex1, *ex2;

-      scope = symbol_search(0, des, scope, path_, net, par, eve, ex1, ex2);
+      scope = symbol_search(this, des, scope, path_, net, par, eve, ex1, ex2);

      if (scope)
            return scope->is_auto();
@@ -371,6 +447,43 @@ bool PEIdent::has_aa_term(Design*des, NetScope*scope) const
            return false;
 }

+PENewArray::PENewArray(PExpr*size_expr, PExpr*init_expr)
+: size_(size_expr), init_(init_expr)
+{
+}
+
+PENewArray::~PENewArray()
+{
+      delete size_;
+}
+
+PENewClass::PENewClass(void)
+{
+}
+
+PENewClass::PENewClass(const list<PExpr*>&p)
+: parms_(p.size())
+{
+      size_t tmp_idx = 0;
+      for (list<PExpr*>::const_iterator cur = p.begin()
+		 ; cur != p.end() ; ++ cur) {
+	    parms_[tmp_idx++] = *cur;
+      }
+}
+
+PENewClass::~PENewClass()
+{
+}
+
+PENewCopy::PENewCopy(PExpr*src)
+: src_(src)
+{
+}
+
+PENewCopy::~PENewCopy()
+{
+}
+
 PENumber::PENumber(verinum*vp)
 : value_(vp)
 {
@@ -436,6 +549,15 @@ bool PETernary::has_aa_term(Design*des, NetScope*scope) const
           || fal_->has_aa_term(des, scope);
 }

+PETypename::PETypename(data_type_t*dt)
+: data_type_(dt)
+{
+}
+
+PETypename::~PETypename()
+{
+}
+
 PEUnary::PEUnary(char op, PExpr*ex)
 : op_(op), expr_(ex)
 {
@@ -1,7 +1,8 @@
-#ifndef __PExpr_H
-#define __PExpr_H
+#ifndef IVL_PExpr_H
+#define IVL_PExpr_H
 /*
- * Copyright (c) 1998-2011 Stephen Williams <[email protected]>
+ * Copyright (c) 1998-2014 Stephen Williams <[email protected]>
+ * Copyright CERN 2013 / Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +17,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <string>
@@ -33,6 +34,7 @@ class LexicalScope;
 class NetNet;
 class NetExpr;
 class NetScope;
+class PPackage;

 /*
 * The PExpr class hierarchy supports the description of
@@ -43,12 +45,17 @@ class NetScope;
 class PExpr : public LineInfo {

    public:
-      enum width_mode_t { SIZED, EXPAND, LOSSLESS, UNSIZED };
+	// Mode values used by test_width() (see below for description).
+      enum width_mode_t { SIZED, UNSIZED, EXPAND, LOSSLESS, UPSIZE };

-        // Flag values that can be passed to elaborate_expr.
+        // Flag values that can be passed to elaborate_expr().
      static const unsigned NO_FLAGS     = 0x0;
      static const unsigned NEED_CONST   = 0x1;
      static const unsigned SYS_TASK_ARG = 0x2;
+      static const unsigned ANNOTATABLE  = 0x4;
+
+	// Convert width mode to human-readable form.
+      static const char*width_mode_name(width_mode_t mode);

      PExpr();
      virtual ~PExpr();
@@ -76,33 +83,42 @@ class PExpr : public LineInfo {
 	// without changing the result. This allows the expression width to
 	// be pruned when not all bits of the result are used.
 	//
-	// Normally mode should be initialised to SIZED before starting to
+	// Normally mode should be initialized to SIZED before starting to
 	// test the width of an expression. In SIZED mode the expression
 	// width will be calculated strictly according to the IEEE standard
 	// rules for expression width.
-	// If the expression contains an unsized literal, mode will be
-	// changed to LOSSLESS. In LOSSLESS mode the expression width will
-	// be calculated as the minimum width necessary to avoid arithmetic
-	// overflow or underflow.
-	// If the expression both contains an unsized literal and contains
-	// an operation that coerces a vector operand to a different type
-	// (signed <-> unsigned), mode is changed to UNSIZED. UNSIZED mode
-	// is the same as LOSSLESS, except that the final expression width
-	// will be forced to be at least integer_width. This is necessary
-	// to ensure compatibility with the IEEE standard, which requires
-	// unsized literals to be treated as having the same width as an
-	// integer. The lossless width calculation is inadequate in this
-	// case because coercing an operand to a different type means that
-	// the expression no longer obeys the normal rules of arithmetic.
 	//
-	// If mode is initialised to EXPAND instead of SIZED, the expression
+	// If the expression is found to contain an unsized literal number
+	// and gn_strict_expr_width_flag is set, mode will be changed to
+	// UNSIZED. In UNSIZED mode the expression width will be calculated
+	// exactly as in SIZED mode - the change in mode simply flags that
+	// the expression contains an unsized numbers.
+	//
+	// If the expression is found to contain an unsized literal number
+	// and gn_strict_expr_width_flag is not set, mode will be changed
+	// to LOSSLESS. In LOSSLESS mode the expression width will be
+	// calculated as the minimum width necessary to avoid arithmetic
+	// overflow or underflow.
+	//
+	// Once in LOSSLESS mode, if the expression is found to contain
+	// an operation that coerces a vector operand to a different type
+	// (signed <-> unsigned), mode will be changed to UPSIZE. UPSIZE
+	// mode is the same as LOSSLESS, except that the final expression
+	// width will be forced to be at least integer_width. This is
+	// necessary to ensure compatibility with the IEEE standard, which
+	// requires unsized numbers to be treated as having the same width
+	// as an integer. The lossless width calculation is inadequate in
+	// this case because coercing an operand to a different type means
+	// that the expression no longer obeys the normal rules of arithmetic.
+	//
+	// If mode is initialized to EXPAND instead of SIZED, the expression
 	// width will be calculated as the minimum width necessary to avoid
 	// arithmetic overflow or underflow, even if it contains no unsized
-	// literals. mode will be changed LOSSLESS or UNSIZED as described
+	// literals. mode will be changed LOSSLESS or UPSIZE as described
 	// above. This supports a non-standard mode of expression width
 	// calculation.
 	//
-	// When the final value of mode is UNSIZED, the width returned by
+	// When the final value of mode is UPSIZE, the width returned by
 	// this method is the calculated lossless width, but the width
 	// returned by a subsequent call to the expr_width method will be
 	// the final expression width.
@@ -120,6 +136,13 @@ class PExpr : public LineInfo {
        // to be propagated down to any context-dependant operands.
      void cast_signed(bool flag) { signed_flag_ = flag; }

+	// This is the more generic form of the elaborate_expr method
+	// below. The plan is to replace the simpler elaborate_expr
+	// method with this version, which can handle more advanced
+	// types. But for now, this is only implemented in special cases.
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+
 	// Procedural elaboration of the expression. The expr_width is
 	// the required width of the expression.
 	//
@@ -141,11 +164,12 @@ class PExpr : public LineInfo {

 	// Expressions that can be in the l-value of procedural
 	// assignments can be elaborated with this method. If the
-	// is_force flag is true, then the set of valid l-value types
-	// is slightly modified to accommodate the Verilog force
-	// statement
+	// is_cassign or is_force flags are true, then the set of
+	// valid l-value types is slightly modified to accommodate
+	// the Verilog procedural continuous assignment statements.
      virtual NetAssign_* elaborate_lval(Design*des,
 					 NetScope*scope,
+					 bool is_cassign,
 					 bool is_force) const;

 	// This attempts to evaluate a constant expression, and return
@@ -180,6 +204,29 @@ class PExpr : public LineInfo {

 ostream& operator << (ostream&, const PExpr&);

+class PEAssignPattern : public PExpr {
+    public:
+      explicit PEAssignPattern();
+      explicit PEAssignPattern(const std::list<PExpr*>&p);
+      ~PEAssignPattern();
+
+      void dump(std::ostream&) const;
+
+      virtual unsigned test_width(Design*des, NetScope*scope, width_mode_t&mode);
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     unsigned expr_wid,
+                                     unsigned flags) const;
+    private:
+      NetExpr* elaborate_expr_darray_(Design*des, NetScope*scope,
+				      ivl_type_t type, unsigned flags) const;
+
+    private:
+      std::vector<PExpr*>parms_;
+};
+
 class PEConcat : public PExpr {

    public:
@@ -198,11 +245,16 @@ class PEConcat : public PExpr {

      virtual NetNet* elaborate_lnet(Design*des, NetScope*scope) const;
      virtual NetNet* elaborate_bi_net(Design*des, NetScope*scope) const;
+
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+
      virtual NetExpr*elaborate_expr(Design*des, NetScope*,
 				     unsigned expr_wid,
                                     unsigned flags) const;
      virtual NetAssign_* elaborate_lval(Design*des,
 					 NetScope*scope,
+					 bool is_cassign,
 					 bool is_force) const;
      virtual bool is_collapsible_net(Design*des, NetScope*scope) const;
    private:
@@ -264,6 +316,8 @@ class PEFNumber : public PExpr {

      virtual unsigned test_width(Design*des, NetScope*scope,
 				  width_mode_t&mode);
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*,
+				     ivl_type_t type, unsigned flags) const;
      virtual NetExpr*elaborate_expr(Design*des, NetScope*,
 				     unsigned expr_wid,
                                     unsigned flags) const;
@@ -278,6 +332,7 @@ class PEIdent : public PExpr {

    public:
      explicit PEIdent(perm_string, bool no_implicit_sig=false);
+      explicit PEIdent(PPackage*pkg, const pform_name_t&name);
      explicit PEIdent(const pform_name_t&);
      ~PEIdent();

@@ -302,15 +357,23 @@ class PEIdent : public PExpr {
 	// Identifiers are also allowed as procedural assignment l-values.
      virtual NetAssign_* elaborate_lval(Design*des,
 					 NetScope*scope,
+					 bool is_cassign,
 					 bool is_force) const;

+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
      virtual NetExpr*elaborate_expr(Design*des, NetScope*,
 				     unsigned expr_wid,
                                     unsigned flags) const;

 	// Elaborate the PEIdent as a port to a module. This method
 	// only applies to Ident expressions.
-      NetNet* elaborate_port(Design*des, NetScope*sc) const;
+      NetNet* elaborate_subport(Design*des, NetScope*sc) const;
+
+	// Elaborate the identifier allowing for unpacked arrays. This
+	// method only applies to Ident expressions because only Ident
+	// expressions can can be unpacked arrays.
+      NetNet* elaborate_unpacked_net(Design*des, NetScope*sc) const;

      verinum* eval_const(Design*des, NetScope*sc) const;

@@ -319,6 +382,7 @@ class PEIdent : public PExpr {
      const pform_name_t& path() const { return path_; }

    private:
+      PPackage*package_;
      pform_name_t path_;
      bool no_implicit_sig_;

@@ -328,6 +392,8 @@ class PEIdent : public PExpr {
 	// elaborate/calculate, or false if there is some sort of
 	// source error.

+      bool calculate_bits_(Design*, NetScope*, long&msb, bool&defined) const;
+
 	// The calculate_parts_ method calculates the range
 	// expressions of a part select for the current object. The
 	// part select expressions are elaborated and evaluated, and
@@ -343,40 +409,71 @@ class PEIdent : public PExpr {

      bool calculate_up_do_width_(Design*, NetScope*, unsigned long&wid) const;

+	// Evaluate the prefix indices. All but the final index in a
+	// chain of indices must be a single value and must evaluate
+	// to constants at compile time. For example:
+	//    [x]          - OK
+	//    [1][2][x]    - OK
+	//    [1][x:y]     - OK
+	//    [2:0][x]     - BAD
+	//    [y][x]       - BAD
+	// Leave the last index for special handling.
+      bool calculate_packed_indices_(Design*des, NetScope*scope, NetNet*net,
+				     std::list<long>&prefix_indices) const;
+
    private:
-      NetAssign_*elaborate_lval_net_word_(Design*, NetScope*, NetNet*) const;
-      bool elaborate_lval_net_bit_(Design*, NetScope*, NetAssign_*) const;
+      NetAssign_*elaborate_lval_method_class_member_(Design*, NetScope*) const;
+      NetAssign_*elaborate_lval_net_word_(Design*, NetScope*, NetNet*,
+					  bool need_const_idx) const;
+      bool elaborate_lval_net_bit_(Design*, NetScope*, NetAssign_*,
+				   bool need_const_idx) const;
      bool elaborate_lval_net_part_(Design*, NetScope*, NetAssign_*) const;
      bool elaborate_lval_net_idx_(Design*, NetScope*, NetAssign_*,
-                                   index_component_t::ctype_t) const;
+                                   index_component_t::ctype_t,
+				   bool need_const_idx) const;
+      NetAssign_*elaborate_lval_net_class_member_(Design*, NetScope*,
+						   NetNet*,
+						   const perm_string&) const;
+      bool elaborate_lval_net_packed_member_(Design*, NetScope*,
+					     NetAssign_*,
+					     const perm_string&) const;
+      bool elaborate_lval_darray_bit_(Design*, NetScope*,
+				       NetAssign_*) const;

    private:
      NetExpr*elaborate_expr_param_(Design*des,
 				    NetScope*scope,
 				    const NetExpr*par,
-				    NetScope*found,
+				    NetScope*found_in,
 				    const NetExpr*par_msb,
 				    const NetExpr*par_lsb,
 				    unsigned expr_wid,
                                    unsigned flags) const;
+      NetExpr*elaborate_expr_param_bit_(Design*des,
+					NetScope*scope,
+					const NetExpr*par,
+					NetScope*found_in,
+					const NetExpr*par_msb,
+					const NetExpr*par_lsb,
+                                        bool need_const) const;
      NetExpr*elaborate_expr_param_part_(Design*des,
 					 NetScope*scope,
 					 const NetExpr*par,
-					 NetScope*found,
+					 NetScope*found_in,
 					 const NetExpr*par_msb,
 					 const NetExpr*par_lsb,
 				         unsigned expr_wid) const;
      NetExpr*elaborate_expr_param_idx_up_(Design*des,
 					   NetScope*scope,
 					   const NetExpr*par,
-					   NetScope*found,
+					   NetScope*found_in,
 					   const NetExpr*par_msb,
 					   const NetExpr*par_lsb,
                                           bool need_const) const;
      NetExpr*elaborate_expr_param_idx_do_(Design*des,
 					   NetScope*scope,
 					   const NetExpr*par,
-					   NetScope*found,
+					   NetScope*found_in,
 					   const NetExpr*par_msb,
 					   const NetExpr*par_lsb,
                                           bool need_const) const;
@@ -412,15 +509,118 @@ class PEIdent : public PExpr {
 				      NetESignal*net,
 				      NetScope*found,
                                      bool need_const) const;
+      NetExpr*elaborate_expr_net_bit_last_(Design*des,
+					   NetScope*scope,
+					   NetESignal*net,
+					   NetScope*found,
+					   bool need_const) const;
+
+      NetExpr*elaborate_expr_class_member_(Design*des,
+					   NetScope*scope,
+					   unsigned expr_wid,
+					   unsigned flags) const;
+
+      unsigned test_width_method_(Design*des, NetScope*scope, width_mode_t&mode);
+      NetExpr*elaborate_expr_method_(Design*des,
+				     NetScope*scope,
+				     unsigned expr_wid,
+				     unsigned flags) const;

    private:
      NetNet* elaborate_lnet_common_(Design*des, NetScope*scope,
 				     bool bidirectional_flag) const;

+      NetAssign_*scan_lname_for_nested_members_(Design*des, NetScope*scope,
+						       const pform_name_t&path) const;
      bool eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 			     long&midx, long&lidx) const;
 };

+class PENewArray : public PExpr {
+
+    public:
+      explicit PENewArray (PExpr*s, PExpr*i);
+      ~PENewArray();
+
+      virtual void dump(ostream&) const;
+      virtual unsigned test_width(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*,
+				     unsigned expr_wid,
+                                     unsigned flags) const;
+
+    private:
+      PExpr*size_;
+      PExpr*init_;
+};
+
+class PENewClass : public PExpr {
+
+    public:
+	// New without (or with default) constructor
+      explicit PENewClass ();
+	// New with constructor arguments
+      explicit PENewClass (const std::list<PExpr*>&p);
+
+      ~PENewClass();
+
+      virtual void dump(ostream&) const;
+	// Class objects don't have a useful width, but the expression
+	// is IVL_VT_CLASS.
+      virtual unsigned test_width(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+	// Note that class (new) expressions only appear in context
+	// that uses this form of the elaborate_expr method. In fact,
+	// the type argument is going to be a netclass_t object.
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+
+    private:
+      NetExpr* elaborate_expr_constructor_(Design*des, NetScope*scope,
+					   const netclass_t*ctype,
+					   NetExpr*obj, unsigned flags) const;
+
+    private:
+      std::vector<PExpr*>parms_;
+};
+
+class PENewCopy : public PExpr {
+    public:
+      explicit PENewCopy(PExpr*src);
+      ~PENewCopy();
+
+      virtual void dump(ostream&) const;
+	// Class objects don't have a useful width, but the expression
+	// is IVL_VT_CLASS.
+      virtual unsigned test_width(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+	// Note that class (new) expressions only appear in context
+	// that uses this form of the elaborate_expr method. In fact,
+	// the type argument is going to be a netclass_t object.
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+
+    private:
+      PExpr*src_;
+};
+
+class PENull : public PExpr {
+    public:
+      explicit PENull();
+      ~PENull();
+
+      virtual void dump(ostream&) const;
+      virtual unsigned test_width(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*,
+				     unsigned expr_wid,
+                                     unsigned flags) const;
+};
+
 class PENumber : public PExpr {

    public:
@@ -433,10 +633,13 @@ class PENumber : public PExpr {
      virtual unsigned test_width(Design*des, NetScope*scope,
 				  width_mode_t&mode);

+      virtual NetExpr  *elaborate_expr(Design*des, NetScope*scope,
+				       ivl_type_t type, unsigned flags) const;
      virtual NetEConst*elaborate_expr(Design*des, NetScope*,
 				       unsigned expr_wid, unsigned) const;
      virtual NetAssign_* elaborate_lval(Design*des,
 					 NetScope*scope,
+					 bool is_cassign,
 					 bool is_force) const;

      virtual verinum* eval_const(Design*des, NetScope*sc) const;
@@ -466,6 +669,9 @@ class PEString : public PExpr {
      virtual unsigned test_width(Design*des, NetScope*scope,
 				  width_mode_t&mode);

+      virtual NetEConst*elaborate_expr(Design*des, NetScope*scope,
+				       ivl_type_t type, unsigned flags) const;
+
      virtual NetEConst*elaborate_expr(Design*des, NetScope*,
 				       unsigned expr_wid, unsigned) const;
      verinum* eval_const(Design*, NetScope*) const;
@@ -474,6 +680,23 @@ class PEString : public PExpr {
      char*text_;
 };

+class PETypename : public PExpr {
+    public:
+      explicit PETypename(data_type_t*data_type);
+      ~PETypename();
+
+      virtual void dump(ostream&) const;
+      virtual unsigned test_width(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     ivl_type_t type, unsigned flags) const;
+
+      inline data_type_t* get_type() const { return data_type_; }
+
+    private:
+      data_type_t*data_type_;
+};
+
 class PEUnary : public PExpr {

    public:
@@ -494,6 +717,10 @@ class PEUnary : public PExpr {
                                     unsigned flags) const;
      virtual verinum* eval_const(Design*des, NetScope*sc) const;

+    public:
+      inline char get_op() const { return op_; }
+      inline PExpr*get_expr() const { return expr_; }
+
    private:
      NetExpr* elaborate_expr_bits_(NetExpr*operand, unsigned expr_wid) const;

@@ -650,7 +877,7 @@ class PETernary : public PExpr {
    private:
      NetExpr* elab_and_eval_alternative_(Design*des, NetScope*scope,
 					  PExpr*expr, unsigned expr_wid,
-                                          unsigned flags) const;
+                                          unsigned flags, bool short_cct) const;

    private:
      PExpr*expr_;
@@ -666,11 +893,18 @@ class PETernary : public PExpr {
 class PECallFunction : public PExpr {
    public:
      explicit PECallFunction(const pform_name_t&n, const vector<PExpr *> &parms);
+	// Call function defined in package.
+      explicit PECallFunction(PPackage*pkg, perm_string n, const std::vector<PExpr *> &parms);
+      explicit PECallFunction(PPackage*pkg, perm_string n, const std::list<PExpr *> &parms);
+
+	// Used to convert a user function called as a task
+      explicit PECallFunction(PPackage*pkg, const pform_name_t&n, const std::vector<PExpr *> &parms);
+
 	// Call of system function (name is not hierarchical)
      explicit PECallFunction(perm_string n, const vector<PExpr *> &parms);
      explicit PECallFunction(perm_string n);

-	// svector versions. Should be removed!
+	// std::list versions. Should be removed!
      explicit PECallFunction(const pform_name_t&n, const list<PExpr *> &parms);
      explicit PECallFunction(perm_string n, const list<PExpr *> &parms);

@@ -690,13 +924,26 @@ class PECallFunction : public PExpr {
 				  width_mode_t&mode);

    private:
+      PPackage*package_;
      pform_name_t path_;
-      vector<PExpr *> parms_;
+      std::vector<PExpr *> parms_;

      bool check_call_matches_definition_(Design*des, NetScope*dscope) const;

+
      NetExpr* cast_to_width_(NetExpr*expr, unsigned wid) const;

+      NetExpr*elaborate_expr_pkg_(Design*des, NetScope*scope,
+				  unsigned expr_wid, unsigned flags)const;
+      NetExpr*elaborate_expr_method_(Design*des, NetScope*scope,
+				     unsigned expr_wid,
+				     bool add_this_flag = false) const;
+#if 0
+      NetExpr*elaborate_expr_string_method_(Design*des, NetScope*scope) const;
+      NetExpr*elaborate_expr_enum_method_(Design*des, NetScope*scope,
+					  unsigned expr_wid) const;
+#endif
+
      NetExpr* elaborate_sfunc_(Design*des, NetScope*scope,
                                unsigned expr_wid,
                                unsigned flags) const;
@@ -704,6 +951,16 @@ class PECallFunction : public PExpr {
                                      unsigned expr_wid) const;
      unsigned test_width_sfunc_(Design*des, NetScope*scope,
 			         width_mode_t&mode);
+      unsigned test_width_method_(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+
+      NetExpr*elaborate_base_(Design*des, NetScope*scope, NetScope*dscope,
+			      unsigned expr_wid, unsigned flags) const;
+
+      unsigned elaborate_arguments_(Design*des, NetScope*scope,
+				    NetFuncDef*def, bool need_const,
+				    std::vector<NetExpr*>&parms,
+				    unsigned parm_off) const;
 };

 /*
@@ -729,6 +986,28 @@ class PECastSize  : public PExpr {
      PExpr* base_;
 };

+/*
+ * Support the SystemVerilog cast to a different type.
+ */
+class PECastType  : public PExpr {
+
+    public:
+      explicit PECastType(data_type_t*target, PExpr*base);
+      ~PECastType();
+
+      void dump(ostream &out) const;
+
+      virtual NetExpr*elaborate_expr(Design*des, NetScope*scope,
+				     unsigned expr_wid, unsigned flags) const;
+
+      virtual unsigned test_width(Design*des, NetScope*scope,
+				  width_mode_t&mode);
+
+    private:
+      data_type_t* target_;
+      PExpr* base_;
+};
+
 /*
 * This class is used for error recovery. All methods do nothing and return
 * null or default values.
@@ -744,4 +1023,4 @@ class PEVoid : public PExpr {
                                     unsigned flags) const;
 };

-#endif
+#endif /* IVL_PExpr_H */
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2008,2010 Stephen Williams ([email protected])
+ * Copyright (c) 1999-2013 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,30 +14,26 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
-
-#include "PTask.h"
+# include "PTask.h"
+# include "Statement.h"
+# include <cassert>
+# include "ivl_assert.h"

 PFunction::PFunction(perm_string name, LexicalScope*parent, bool is_auto__)
-: PScope(name, parent), ports_(0), statement_(0)
+: PTaskFunc(name, parent), statement_(0)
 {
      is_auto_ = is_auto__;
-      return_type_.type = PTF_NONE;
+      return_type_ = 0;
 }

 PFunction::~PFunction()
 {
 }

-void PFunction::set_ports(svector<PWire *>*p)
-{
-      assert(ports_ == 0);
-      ports_ = p;
-}
-
 void PFunction::set_statement(Statement*s)
 {
      assert(s != 0);
@@ -45,7 +41,45 @@ void PFunction::set_statement(Statement*s)
      statement_ = s;
 }

-void PFunction::set_return(PTaskFuncArg t)
+void PFunction::push_statement_front(Statement*stmt)
+{
+	// This can only happen after the statement is initially set.
+      ivl_assert(*this, statement_);
+
+	// Get the PBlock of the statement. If it is not a PBlock,
+	// then create one to wrap the existing statement and the new
+	// statement that we're pushing.
+      PBlock*blk = dynamic_cast<PBlock*> (statement_);
+      if (blk == 0) {
+	    PBlock*tmp = new PBlock(PBlock::BL_SEQ);
+	    tmp->set_line(*this);
+	    vector<Statement*>tmp_list(1);
+	    tmp_list[0] = statement_;
+	    tmp->set_statement(tmp_list);
+
+	    statement_ = tmp;
+	    blk = tmp;
+      }
+
+	// Now do the push.
+      blk->push_statement_front(stmt);
+}
+
+void PFunction::set_return(data_type_t*t)
 {
      return_type_ = t;
 }
+
+PChainConstructor* PFunction::extract_chain_constructor()
+{
+      PChainConstructor*res = 0;
+
+      if ((res = dynamic_cast<PChainConstructor*> (statement_))) {
+	    statement_ = 0;
+
+      } else if (PBlock*blk = dynamic_cast<PBlock*>(statement_)) {
+	    res = blk->extract_chain_constructor();
+      }
+
+      return res;
+}
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2010 Stephen Williams ([email protected])
+ * Copyright (c) 1999-2013 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -260,18 +260,22 @@ const char* PGBuiltin::gate_name() const
 }

 PGModule::PGModule(perm_string type, perm_string name, list<PExpr*>*pins)
-: PGate(name, pins), overrides_(0), pins_(0),
+: PGate(name, pins), bound_type_(0), type_(type), overrides_(0), pins_(0),
  npins_(0), parms_(0), nparms_(0), msb_(0), lsb_(0)
 {
-      type_ = type;
 }

 PGModule::PGModule(perm_string type, perm_string name,
 		   named<PExpr*>*pins, unsigned npins)
-: PGate(name, 0), overrides_(0), pins_(pins),
+: PGate(name, 0), bound_type_(0), type_(type), overrides_(0), pins_(pins),
  npins_(npins), parms_(0), nparms_(0), msb_(0), lsb_(0)
 {
-      type_ = type;
+}
+
+PGModule::PGModule(Module*type, perm_string name)
+: PGate(name, 0), bound_type_(type), overrides_(0), pins_(0),
+  npins_(0), parms_(0), nparms_(0), msb_(0), lsb_(0)
+{
 }

 PGModule::~PGModule()
@@ -1,7 +1,7 @@
-#ifndef __PGate_H
-#define __PGate_H
+#ifndef IVL_PGate_H
+#define IVL_PGate_H
 /*
- * Copyright (c) 1998-2011 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "svector.h"
@@ -124,6 +124,7 @@ class PGAssign  : public PGate {
      virtual bool elaborate_sig(Design*des, NetScope*scope) const;

    private:
+      void elaborate_unpacked_array_(Design*des, NetScope*scope, NetNet*lval) const;
 };


@@ -201,6 +202,9 @@ class PGModule  : public PGate {
      explicit PGModule(perm_string type, perm_string name,
 			named<PExpr*>*pins, unsigned npins);

+	// If the module type is known by design, then use this
+	// constructor.
+      explicit PGModule(Module*type, perm_string name);

      ~PGModule();

@@ -223,6 +227,7 @@ class PGModule  : public PGate {
      perm_string get_type() const;

    private:
+      Module*bound_type_;
      perm_string type_;
      list<PExpr*>*overrides_;
      named<PExpr*>*pins_;
@@ -255,4 +260,4 @@ class PGModule  : public PGate {
 				 NetNet::PortType dir, bool as_signed) const;
 };

-#endif
+#endif /* IVL_PGate_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "PGenerate.h"
@@ -1,7 +1,7 @@
-#ifndef __PGenerate_H
-#define __PGenerate_H
+#ifndef IVL_PGenerate_H
+#define IVL_PGenerate_H
 /*
- * Copyright (c) 2006-2010 Stephen Williams ([email protected])
+ * Copyright (c) 2006-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "LineInfo.h"
@@ -80,6 +80,10 @@ class PGenerate : public LineInfo, public LexicalScope {
 	// test value.
      std::valarray<PExpr*> item_test;

+	// defparam assignments found in this scope.
+      typedef pair<pform_name_t,PExpr*> named_expr_t;
+      list<named_expr_t>defparms;
+
      list<PGate*> gates;
      void add_gate(PGate*);

@@ -87,9 +91,6 @@ class PGenerate : public LineInfo, public LexicalScope {
      map<perm_string,PTask*> tasks;
      map<perm_string,PFunction*>funcs;

-	// genvars declared within this scheme.
-      map<perm_string,LineInfo*> genvars;
-
 	// Generate schemes can contain further generate schemes.
      list<PGenerate*> generate_schemes;
 //      PGenerate*parent;
@@ -138,4 +139,4 @@ class PGenerate : public LineInfo, public LexicalScope {

 extern std::ostream& operator << (std::ostream&, PGenerate::scheme_t);

-#endif
+#endif /* IVL_PGenerate_H */
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2012 Stephen Williams ([email protected])
+ * Copyright CERN 2013 / Stephen Williams ([email protected])
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+# include  "PPackage.h"
+
+PPackage::PPackage(perm_string name, LexicalScope*parent)
+: PScopeExtra(name, parent)
+{
+}
+
+PPackage::~PPackage()
+{
+}
@@ -0,0 +1,47 @@
+#ifndef IVL_PPackage_H
+#define IVL_PPackage_H
+/*
+ * Copyright (c) 2012-2014 Stephen Williams ([email protected])
+ * Copyright CERN 2013 / Stephen Williams ([email protected])
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+# include  "PScope.h"
+# include  "LineInfo.h"
+# include  "StringHeap.h"
+# include  <iostream>
+
+/*
+ * SystemVerilog supports class declarations with their own lexical
+ * scope, etc. The parser arranges for these to be created and
+ * collected.
+ */
+
+class PPackage : public PScopeExtra, public LineInfo {
+
+    public:
+      explicit PPackage (perm_string name, LexicalScope*parent);
+      ~PPackage();
+
+      bool elaborate_scope(Design*des, NetScope*scope);
+      bool elaborate_sig(Design*des, NetScope*scope) const;
+      bool elaborate(Design*des, NetScope*scope) const;
+
+      void pform_dump(std::ostream&out) const;
+};
+
+#endif /* IVL_PPackage_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "PScope.h"
@@ -31,6 +31,9 @@ PScope::PScope(perm_string n)

 PScope::~PScope()
 {
+    for(map<perm_string, data_type_t*>::iterator it = typedefs.begin();
+        it != typedefs.end(); ++it)
+        delete it->second;
 }

 PWire* LexicalScope::wires_find(perm_string name)
@@ -41,3 +44,18 @@ PWire* LexicalScope::wires_find(perm_string name)
      else
 	    return (*cur).second;
 }
+
+PScopeExtra::PScopeExtra(perm_string n, LexicalScope*parent)
+: PScope(n, parent)
+{
+}
+
+PScopeExtra::PScopeExtra(perm_string n)
+: PScope(n)
+{
+}
+
+PScopeExtra::~PScopeExtra()
+{
+}
+
@@ -1,7 +1,7 @@
-#ifndef __PScope_H
-#define __PScope_H
+#ifndef IVL_PScope_H
+#define IVL_PScope_H
 /*
- * Copyright (c) 2008,2010 Stephen Williams ([email protected])
+ * Copyright (c) 2008-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "LineInfo.h"
@@ -24,11 +24,17 @@
 # include  "pform_types.h"
 # include  "ivl_target.h"
 # include  <map>
+# include  <set>
+# include  <vector>

 class PEvent;
 class PExpr;
+class PFunction;
+class PPackage;
 class AProcess;
 class PProcess;
+class PClass;
+class PTask;
 class PWire;

 class Design;
@@ -83,9 +89,16 @@ class LexicalScope {
      map<perm_string,param_expr_t>parameters;
      map<perm_string,param_expr_t>localparams;

+	// Defined types in the scope.
+      map<perm_string,data_type_t*>typedefs;
+
 	// Named events in the scope.
      map<perm_string,PEvent*>events;

+	// Symbols that are imported. Bind the imported name to the
+	// package from which the name is imported.
+      std::map<perm_string,PPackage*>imports;
+
 	// Nets and variables (wires) in the scope
      map<perm_string,PWire*>wires;
      PWire* wires_find(perm_string name);
@@ -100,11 +113,13 @@ class LexicalScope {
      list<AProcess*> analog_behaviors;

 	// Enumeration sets.
-      list<enum_type_t*> enum_sets;
+      std::set<enum_type_t*> enum_sets;

      LexicalScope* parent_scope() const { return parent_; }

    protected:
+      void dump_typedefs_(ostream&out, unsigned indent) const;
+
      void dump_parameters_(ostream&out, unsigned indent) const;

      void dump_localparams_(ostream&out, unsigned indent) const;
@@ -145,4 +160,31 @@ class PScope : public LexicalScope {
      perm_string name_;
 };

-#endif
+/*
+ * Some scopes can carry definitions. These include Modules and PClass
+ * scopes. These derive from PScopeExtra so that they hold the maps of
+ * extra definitions.
+ */
+class PScopeExtra : public PScope {
+
+    public:
+      PScopeExtra(perm_string, LexicalScope*parent);
+      PScopeExtra(perm_string);
+      ~PScopeExtra();
+
+	/* Task definitions within this module */
+      std::map<perm_string,PTask*> tasks;
+      std::map<perm_string,PFunction*> funcs;
+	/* class definitions within this module. */
+      std::map<perm_string,PClass*> classes;
+	/* This is the lexical order of the classes, and is used by
+	   elaboration to choose an elaboration order. */
+      std::vector<PClass*> classes_lexical;
+
+    protected:
+      void dump_classes_(ostream&out, unsigned indent) const;
+      void dump_tasks_(ostream&out, unsigned indent) const;
+      void dump_funcs_(ostream&out, unsigned indent) const;
+};
+
+#endif /* IVL_PScope_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "PSpec.h"
@@ -1,7 +1,7 @@
-#ifndef __PSpec_H
-#define __PSpec_H
+#ifndef IVL_PSpec_H
+#define IVL_PSpec_H
 /*
- * Copyright (c) 2006-2011 Stephen Williams <[email protected]>
+ * Copyright (c) 2006-2014 Stephen Williams <[email protected]>
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "LineInfo.h"
@@ -84,4 +84,4 @@ class PSpecPath  : public LineInfo {
      std::vector<class PExpr*>delays;
 };

-#endif
+#endif /* IVL_PSpec_H */
@@ -14,15 +14,47 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
-
 # include  "PTask.h"
+# include  <cassert>
+
+PTaskFunc::PTaskFunc(perm_string n, LexicalScope*p)
+: PScope(n,p), this_type_(0), ports_(0)
+{
+}
+
+PTaskFunc::~PTaskFunc()
+{
+}
+
+void PTaskFunc::set_ports(vector<pform_tf_port_t>*p)
+{
+      assert(ports_ == 0);
+      ports_ = p;
+}
+
+void PTaskFunc::set_this(class_type_t*type, PWire*this_wire)
+{
+      assert(this_type_ == 0);
+      this_type_ = type;
+
+	// Push a synthethis argument that is the "this" value.
+      if (ports_==0)
+	    ports_ = new vector<pform_tf_port_t>;
+
+      size_t use_size = ports_->size();
+      ports_->resize(use_size + 1);
+      for (size_t idx = use_size ; idx > 0 ; idx -= 1)
+	    ports_->at(idx) = ports_->at(idx-1);
+
+      ports_->at(0) = pform_tf_port_t(this_wire);
+}

 PTask::PTask(perm_string name, LexicalScope*parent, bool is_auto__)
-: PScope(name, parent), ports_(0), statement_(0)
+: PTaskFunc(name, parent), statement_(0)
 {
      is_auto_ = is_auto__;
 }
@@ -31,12 +63,6 @@ PTask::~PTask()
 {
 }

-void PTask::set_ports(svector<PWire*>*p)
-{
-      assert(ports_ == 0);
-      ports_ = p;
-}
-
 void PTask::set_statement(Statement*s)
 {
      assert(statement_ == 0);
@@ -1,7 +1,7 @@
-#ifndef __PTask_H
-#define __PTask_H
+#ifndef IVL_PTask_H
+#define IVL_PTask_H
 /*
- * Copyright (c) 1999-2008,2010 Stephen Williams ([email protected])
+ * Copyright (c) 1999-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,49 +16,69 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "LineInfo.h"
 # include  "PScope.h"
-# include  "svector.h"
 # include  "StringHeap.h"
 # include  <string>
 # include  <vector>
 # include  <list>
 class Design;
+class NetExpr;
+class NetNet;
 class NetScope;
+class PChainConstructor;
 class PWire;
 class Statement;
 class PExpr;

-enum PTaskFuncEnum {
-      PTF_NONE,
-      PTF_REG,
-      PTF_REG_S,
-      PTF_INTEGER,
-      PTF_REAL,
-      PTF_REALTIME,
-      PTF_TIME,
-      PTF_ATOM2,
-      PTF_ATOM2_S
-};

-struct PTaskFuncArg {
-      PTaskFuncEnum type;
-      vector<PExpr*>*range;
+class PTaskFunc : public PScope, public LineInfo {
+
+    public:
+      PTaskFunc(perm_string name, LexicalScope*parent);
+      ~PTaskFunc();
+
+      void set_ports(std::vector<pform_tf_port_t>*p);
+
+      void set_this(class_type_t*use_type, PWire*this_wire);
+
+	// If this task is a method of a class, this returns a pointer
+	// to the class type.
+      inline class_type_t* method_of() const { return this_type_; }
+
+
+      virtual void elaborate_sig(Design*des, NetScope*scope) const =0;
+      virtual void elaborate(Design*des, NetScope*scope) const =0;
+
+      virtual void dump(std::ostream&, unsigned) const =0;
+
+    protected:
+	// Elaborate the ports list. Write into the ports vector the
+	// NetNet pointers for the ports, and write into the pdefs the
+	// default value expressions, if any.
+      void elaborate_sig_ports_(Design*des, NetScope*scope,
+				std::vector<NetNet*>&ports,
+				std::vector<NetExpr*>&pdefs) const;
+
+      void dump_ports_(std::ostream&out, unsigned ind) const;
+
+    private:
+      class_type_t*this_type_;
+      std::vector<pform_tf_port_t>*ports_;
 };

 /*
 * The PTask holds the parsed definitions of a task.
 */
-class PTask  : public PScope, public LineInfo {
+class PTask  : public PTaskFunc {

    public:
      explicit PTask(perm_string name, LexicalScope*parent, bool is_auto);
      ~PTask();

-      void set_ports(svector<PWire *>*p);
      void set_statement(Statement *s);

 	// Tasks introduce scope, to need to be handled during the
@@ -78,7 +98,6 @@ class PTask  : public PScope, public LineInfo {
      void dump(ostream&, unsigned) const;

    private:
-      svector<PWire*>*ports_;
      Statement*statement_;
      bool is_auto_;

@@ -94,15 +113,26 @@ class PTask  : public PScope, public LineInfo {
 *
 * The output value is not elaborated until elaborate_sig.
 */
-class PFunction : public PScope, public LineInfo {
+class PFunction : public PTaskFunc {

    public:
      explicit PFunction(perm_string name, LexicalScope*parent, bool is_auto);
      ~PFunction();

-      void set_ports(svector<PWire *>*p);
      void set_statement(Statement *s);
-      void set_return(PTaskFuncArg t);
+      void set_return(data_type_t*t);
+
+      inline Statement* get_statement() { return statement_; }
+
+	// Push this statement to the front of the existing
+	// definition. If the statement is a simple statement, make a
+	// block to contain the statements.
+      void push_statement_front(Statement*stmt);
+
+	// This is only used if this function is a constructor. In
+	// that case, this method looks for a PChainConstructor in the
+	// statement and extracts it if found.
+      PChainConstructor*extract_chain_constructor();

      void elaborate_scope(Design*des, NetScope*scope) const;

@@ -117,10 +147,9 @@ class PFunction : public PScope, public LineInfo {
      void dump(ostream&, unsigned) const;

    private:
-      PTaskFuncArg return_type_;
-      svector<PWire *> *ports_;
+      data_type_t* return_type_;
      Statement *statement_;
      bool is_auto_;
 };

-#endif
+#endif /* IVL_PTask_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "PUdp.h"
@@ -1,7 +1,7 @@
-#ifndef __PUdp_H
-#define __PUdp_H
+#ifndef IVL_PUdp_H
+#define IVL_PUdp_H
 /*
- * Copyright (c) 1998-2011 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <map>
@@ -76,4 +76,4 @@ class PUdp : public LineInfo {
      PUdp& operator= (const PUdp&);
 };

-#endif
+#endif /* IVL_PUdp_H */
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2011 Stephen Williams ([email protected])
+ * Copyright (c) 1999-2012 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -28,9 +28,9 @@ PWire::PWire(perm_string n,
 	     ivl_variable_type_t dt)
 : name_(n), type_(t), port_type_(pt), data_type_(dt),
  signed_(false), isint_(false),
-  port_msb_(0), port_lsb_(0), port_set_(false),
-  net_msb_(0), net_lsb_(0), net_set_(false), is_scalar_(false),
-  error_cnt_(0), lidx_(0), ridx_(0), enum_type_(0), discipline_(0)
+  port_set_(false), net_set_(false), is_scalar_(false),
+  error_cnt_(0), set_data_type_(0),
+  discipline_(0)
 {
      if (t == NetNet::INTEGER) {
 	    type_ = NetNet::REG;
@@ -120,6 +120,7 @@ bool PWire::set_data_type(ivl_variable_type_t dt)

      assert(data_type_ == IVL_VT_NO_TYPE);
      data_type_ = dt;
+
      return true;
 }

@@ -140,7 +141,14 @@ bool PWire::get_signed() const

 bool PWire::get_isint() const
 {
-      return isint_;
+      if (isint_)
+	    return true;
+
+      if (vector_type_t*tmp = dynamic_cast<vector_type_t*>(set_data_type_)) {
+	    return tmp->integer_flag;
+      }
+
+      return false;
 }

 bool PWire::get_scalar() const
@@ -148,8 +156,9 @@ bool PWire::get_scalar() const
      return is_scalar_;
 }

-void PWire::set_range(PExpr*m, PExpr*l, PWSRType type, bool is_scalar)
+void PWire::set_range_scalar(PWSRType type)
 {
+      is_scalar_ = true;
      switch (type) {
 	  case SR_PORT:
 	    if (port_set_) {
@@ -157,10 +166,7 @@ void PWire::set_range(PExpr*m, PExpr*l, PWSRType type, bool is_scalar)
 		       << "'' has already been declared a port." << endl;
 		  error_cnt_ += 1;
 	    } else {
-		  port_msb_ = m;
-		  port_lsb_ = l;
 		  port_set_ = true;
-		  is_scalar_ = is_scalar;
 	    }
 	    return;

@@ -170,10 +176,7 @@ void PWire::set_range(PExpr*m, PExpr*l, PWSRType type, bool is_scalar)
 		       << "'' has already been declared." << endl;
 		  error_cnt_ += 1;
 	    } else {
-		  net_msb_ = m;
-		  net_lsb_ = l;
 		  net_set_ = true;
-		  is_scalar_ = is_scalar;
 	    }
 	    return;

@@ -190,34 +193,83 @@ void PWire::set_range(PExpr*m, PExpr*l, PWSRType type, bool is_scalar)
 		        error_cnt_ += 1;
 		  }
 	    } else {
-		  port_msb_ = m;
-		  port_lsb_ = l;
 		  port_set_ = true;
-		  net_msb_ = m;
-		  net_lsb_ = l;
 		  net_set_ = true;
-		  is_scalar_ = is_scalar;
 	    }
 	    return;
      }
 }

-void PWire::set_memory_idx(PExpr*ldx, PExpr*rdx)
+void PWire::set_range(const list<pform_range_t>&rlist, PWSRType type)
 {
-      if (lidx_ != 0 || ridx_ != 0) {
+      switch (type) {
+	  case SR_PORT:
+	    if (port_set_) {
+		  cerr << get_fileline() << ": error: Port ``" << name_
+		       << "'' has already been declared a port." << endl;
+		  error_cnt_ += 1;
+	    } else {
+		  port_ = rlist;
+		  port_set_ = true;
+		  is_scalar_ = false;
+	    }
+	    return;
+
+	  case SR_NET:
+	    if (net_set_) {
+		  cerr << get_fileline() << ": error: Net ``" << name_
+		       << "'' has already been declared." << endl;
+		  error_cnt_ += 1;
+	    } else {
+		  net_ = rlist;
+		  net_set_ = true;
+		  is_scalar_ = false;
+	    }
+	    return;
+
+	  case SR_BOTH:
+	    if (port_set_ || net_set_) {
+		  if (port_set_) {
+		        cerr << get_fileline() << ": error: Port ``" << name_
+		             << "'' has already been declared a port." << endl;
+		        error_cnt_ += 1;
+		  }
+		  if (net_set_) {
+		        cerr << get_fileline() << ": error: Net ``" << name_
+		             << "'' has already been declared." << endl;
+		        error_cnt_ += 1;
+		  }
+	    } else {
+		  port_ = rlist;
+		  port_set_ = true;
+		  net_ = rlist;
+		  net_set_ = true;
+		  is_scalar_ = false;
+	    }
+	    return;
+      }
+}
+
+void PWire::set_unpacked_idx(const list<pform_range_t>&ranges)
+{
+      if (! unpacked_.empty()) {
 	    cerr << get_fileline() << ": error: Array ``" << name_
 	         << "'' has already been declared." << endl;
 	    error_cnt_ += 1;
      } else {
-            lidx_ = ldx;
-            ridx_ = rdx;
+	    unpacked_ = ranges;
      }
 }

-void PWire::set_enumeration(enum_type_t*enum_type)
+void PWire::set_data_type(data_type_t*type)
 {
-      assert(enum_type_ == 0);
-      enum_type_ = enum_type;
+      assert(set_data_type_ == 0);
+      set_data_type_ = type;
+
+      if (vector_type_t*tmp = dynamic_cast<vector_type_t*>(type)) {
+	    if (tmp->integer_flag)
+		  isint_ = true;
+      }
 }

 void PWire::set_discipline(ivl_discipline_t d)
@@ -1,7 +1,7 @@
-#ifndef __PWire_H
-#define __PWire_H
+#ifndef IVL_PWire_H
+#define IVL_PWire_H
 /*
- * Copyright (c) 1998-2009 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,13 +16,13 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "netlist.h"
 # include  "LineInfo.h"
+# include  <list>
 # include  <map>
-# include  "svector.h"
 # include  "StringHeap.h"

 #ifdef HAVE_IOSFWD
@@ -33,6 +33,7 @@ class ostream;

 class PExpr;
 class Design;
+class netdarray_t;

 /*
 * The different type of PWire::set_range() calls.
@@ -75,11 +76,12 @@ class PWire : public LineInfo {
      bool set_data_type(ivl_variable_type_t dt);
      ivl_variable_type_t get_data_type() const;

-      void set_range(PExpr*msb, PExpr*lsb, PWSRType type, bool is_scalar);
+      void set_range_scalar(PWSRType type);
+      void set_range(const std::list<pform_range_t>&ranges, PWSRType type);

-      void set_memory_idx(PExpr*ldx, PExpr*rdx);
+      void set_unpacked_idx(const std::list<pform_range_t>&ranges);

-      void set_enumeration(enum_type_t*enum_type);
+      void set_data_type(data_type_t*type);

      void set_discipline(ivl_discipline_t);
      ivl_discipline_t get_discipline(void) const;
@@ -100,22 +102,25 @@ class PWire : public LineInfo {
      bool isint_;		// original type of integer

 	// These members hold expressions for the bit width of the
-	// wire. If they do not exist, the wire is 1 bit wide.
-      PExpr*port_msb_;
-      PExpr*port_lsb_;
+	// wire. If they do not exist, the wire is 1 bit wide. If they
+	// do exist, they represent the packed dimensions of the
+	// bit. The first item in the list is the first range, and so
+	// on. For example "reg [3:0][7:0] ..." will contains the
+	// range_t object for [3:0] first and [7:0] last.
+      std::list<pform_range_t>port_;
      bool port_set_;
-      PExpr*net_msb_;
-      PExpr*net_lsb_;
+      std::list<pform_range_t>net_;
      bool net_set_;
      bool is_scalar_;
      unsigned error_cnt_;

 	// If this wire is actually a memory, these indices will give
-	// me the size and address range of the memory.
-      PExpr*lidx_;
-      PExpr*ridx_;
+	// me the size and address ranges of the memory.
+      std::list<pform_range_t>unpacked_;

-      enum_type_t*enum_type_;
+	// This is the complex type of the wire. the data_type_ may
+	// modify how this is interpreted.
+      data_type_t*set_data_type_;

      ivl_discipline_t discipline_;

@@ -124,4 +129,4 @@ class PWire : public LineInfo {
      PWire& operator= (const PWire&);
 };

-#endif
+#endif /* IVL_PWire_H */
@@ -8,7 +8,7 @@ Icarus Verilog is intended to compile ALL of the Verilog HDL as
 described in the IEEE-1364 standard. Of course, it's not quite there
 yet. It does currently handle a mix of structural and behavioral
 constructs. For a view of the current state of Icarus Verilog, see its
-home page at <http://www.icarus.com/eda/verilog>.
+home page at <http://iverilog.icarus.com/>.

 Icarus Verilog is not aimed at being a simulator in the traditional
 sense, but a compiler that generates code employed by back-end
@@ -64,7 +64,7 @@ on a UNIX-like system:
 	- termcap
 	  The readline library in turn uses termcap.

-If you are building from CVS, you will also need software to generate
+If you are building from git, you will also need software to generate
 the configure scripts.

 	- autoconf 2.53
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2008,2010 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2013 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,13 +14,14 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"

 # include  "Statement.h"
 # include  "PExpr.h"
+# include  "ivl_assert.h"

 Statement::~Statement()
 {
@@ -51,22 +52,27 @@ PAssign_::~PAssign_()
 }

 PAssign::PAssign(PExpr*lval__, PExpr*ex)
-: PAssign_(lval__, ex, false)
+: PAssign_(lval__, ex, false), op_(0)
+{
+}
+
+PAssign::PAssign(PExpr*lval__, char op, PExpr*ex)
+: PAssign_(lval__, ex, false), op_(op)
 {
 }

 PAssign::PAssign(PExpr*lval__, PExpr*d, PExpr*ex)
-: PAssign_(lval__, d, ex)
+: PAssign_(lval__, d, ex), op_(0)
 {
 }

 PAssign::PAssign(PExpr*lval__, PExpr*cnt, PEventStatement*d, PExpr*ex)
-: PAssign_(lval__, cnt, d, ex)
+: PAssign_(lval__, cnt, d, ex), op_(0)
 {
 }

 PAssign::PAssign(PExpr*lval__, PExpr*ex, bool is_constant)
-: PAssign_(lval__, ex, is_constant)
+: PAssign_(lval__, ex, is_constant), op_(0)
 {
 }

@@ -109,13 +115,57 @@ PBlock::~PBlock()
 	    delete list_[idx];
 }

+PChainConstructor* PBlock::extract_chain_constructor()
+{
+      if (list_.empty())
+	    return 0;
+
+      if (PChainConstructor*res = dynamic_cast<PChainConstructor*> (list_[0])) {
+	    for (size_t idx = 0 ; idx < list_.size()-1 ; idx += 1)
+		  list_[idx] = list_[idx+1];
+	    list_.resize(list_.size()-1);
+	    return res;
+      }
+
+      return 0;
+}
+
+void PBlock::set_join_type(PBlock::BL_TYPE type)
+{
+      assert(bl_type_ == BL_PAR);
+      assert(type==BL_PAR || type==BL_JOIN_NONE || type==BL_JOIN_ANY);
+      bl_type_ = type;
+}
+
 void PBlock::set_statement(const vector<Statement*>&st)
 {
      list_ = st;
 }

+void PBlock::push_statement_front(Statement*that)
+{
+      ivl_assert(*this, bl_type_==BL_SEQ);
+
+      list_.resize(list_.size()+1);
+      for (size_t idx = list_.size()-1 ; idx > 0 ; idx -= 1)
+	    list_[idx] = list_[idx-1];
+
+      list_[0] = that;
+}
+
 PCallTask::PCallTask(const pform_name_t&n, const list<PExpr*>&p)
-: path_(n), parms_(p.size())
+: package_(0), path_(n), parms_(p.size())
+{
+      list<PExpr*>::const_iterator cur = p.begin();
+      for (size_t idx = 0 ; idx < parms_.size() ; idx += 1) {
+	    parms_[idx] = *cur;
+	    ++cur;
+      }
+      assert(cur == p.end());
+}
+
+PCallTask::PCallTask(PPackage*pkg, const pform_name_t&n, const list<PExpr*>&p)
+: package_(pkg), path_(n), parms_(p.size())
 {
      list<PExpr*>::const_iterator cur = p.begin();
      for (size_t idx = 0 ; idx < parms_.size() ; idx += 1) {
@@ -126,7 +176,7 @@ PCallTask::PCallTask(const pform_name_t&n, const list<PExpr*>&p)
 }

 PCallTask::PCallTask(perm_string n, const list<PExpr*>&p)
-: parms_(p.size())
+: package_(0), parms_(p.size())
 {
      list<PExpr*>::const_iterator cur = p.begin();
      for (size_t idx = 0 ; idx < parms_.size() ; idx += 1) {
@@ -171,6 +221,21 @@ PCAssign::~PCAssign()
      delete expr_;
 }

+PChainConstructor::PChainConstructor(const list<PExpr*>&parms)
+: parms_(parms.size())
+{
+      list<PExpr*>::const_iterator cur = parms.begin();
+      for (size_t idx = 0 ; idx < parms_.size() ; idx += 1) {
+	    parms_[idx] = *cur;
+	    ++cur;
+      }
+      assert(cur == parms.end());
+}
+
+PChainConstructor::~PChainConstructor()
+{
+}
+
 PCondit::PCondit(PExpr*ex, Statement*i, Statement*e)
 : expr_(ex), if_(i), else_(e)
 {
@@ -212,6 +277,17 @@ PDisable::~PDisable()
 {
 }

+PDoWhile::PDoWhile(PExpr*ex, Statement*st)
+: cond_(ex), statement_(st)
+{
+}
+
+PDoWhile::~PDoWhile()
+{
+      delete cond_;
+      delete statement_;
+}
+
 PEventStatement::PEventStatement(const svector<PEEvent*>&ee)
 : expr_(ee), statement_(0)
 {
@@ -260,6 +336,20 @@ PForce::~PForce()
      delete expr_;
 }

+PForeach::PForeach(perm_string av, const list<perm_string>&ix, Statement*s)
+: array_var_(av), index_vars_(ix.size()), statement_(s)
+{
+      size_t idx = 0;
+      for (list<perm_string>::const_iterator cur = ix.begin()
+		 ; cur != ix.end() ; ++cur)
+	    index_vars_[idx++] = *cur;
+}
+
+PForeach::~PForeach()
+{
+      delete statement_;
+}
+
 PForever::PForever(Statement*s)
 : statement_(s)
 {
@@ -271,9 +361,8 @@ PForever::~PForever()
 }

 PForStatement::PForStatement(PExpr*n1, PExpr*e1, PExpr*cond,
-			     PExpr*n2, PExpr*e2, Statement*st)
-: name1_(n1), expr1_(e1), cond_(cond), name2_(n2), expr2_(e2),
-  statement_(st)
+			     Statement*step, Statement*st)
+: name1_(n1), expr1_(e1), cond_(cond), step_(step), statement_(st)
 {
 }

@@ -307,6 +396,16 @@ PRepeat::~PRepeat()
      delete statement_;
 }

+PReturn::PReturn(PExpr*e)
+: expr_(e)
+{
+}
+
+PReturn::~PReturn()
+{
+      delete expr_;
+}
+
 PTrigger::PTrigger(const pform_name_t&e)
 : event_(e)
 {
@@ -316,8 +415,8 @@ PTrigger::~PTrigger()
 {
 }

-PWhile::PWhile(PExpr*e1, Statement*st)
-: cond_(e1), statement_(st)
+PWhile::PWhile(PExpr*ex, Statement*st)
+: cond_(ex), statement_(st)
 {
 }

@@ -1,7 +1,7 @@
-#ifndef __Statement_H
-#define __Statement_H
+#ifndef IVL_Statement_H
+#define IVL_Statement_H
 /*
- * Copyright (c) 1998-2008 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <string>
@@ -31,6 +31,8 @@
 # include  "HName.h"
 # include  "LineInfo.h"
 class PExpr;
+class PChainConstructor;
+class PPackage;
 class Statement;
 class PEventStatement;
 class Design;
@@ -104,8 +106,13 @@ class PAssign_  : public Statement {

    protected:
      NetAssign_* elaborate_lval(Design*, NetScope*scope) const;
-      NetExpr* elaborate_rval_(Design*, NetScope*, unsigned lv_width,
-			       ivl_variable_type_t type) const;
+      NetExpr* elaborate_rval_(Design*, NetScope*, ivl_type_t lv_net_type,
+			       ivl_variable_type_t lv_type,
+			       unsigned lv_width) const;
+      NetExpr* elaborate_rval_(Design*, NetScope*, ivl_type_t ntype) const;
+
+      NetExpr* elaborate_rval_obj_(Design*, NetScope*,
+				   ivl_variable_type_t type) const;

      PExpr* delay_;
      PEventStatement*event_;
@@ -120,7 +127,12 @@ class PAssign_  : public Statement {
 class PAssign  : public PAssign_ {

    public:
+	// lval  - assignment l-value
+	// ex    - assignment r-value
+	// op    - compressed assignment operator (i.e. '+', '-', ...)
+	// de    - delayed assignment delay expression
      explicit PAssign(PExpr*lval, PExpr*ex);
+      explicit PAssign(PExpr*lval, char op, PExpr*ex);
      explicit PAssign(PExpr*lval, PExpr*de, PExpr*ex);
      explicit PAssign(PExpr*lval, PExpr*cnt, PEventStatement*de, PExpr*ex);
      explicit PAssign(PExpr*lval, PExpr*ex, bool is_constant);
@@ -130,6 +142,8 @@ class PAssign  : public PAssign_ {
      virtual NetProc* elaborate(Design*des, NetScope*scope) const;

    private:
+      NetProc* elaborate_compressed_(Design*des, NetScope*scope) const;
+      char op_;
 };

 class PAssignNB  : public PAssign_ {
@@ -158,7 +172,7 @@ class PAssignNB  : public PAssign_ {
 class PBlock  : public PScope, public Statement {

    public:
-      enum BL_TYPE { BL_SEQ, BL_PAR };
+      enum BL_TYPE { BL_SEQ, BL_PAR, BL_JOIN_NONE, BL_JOIN_ANY };

 	// If the block has a name, it is a scope and also has a parent.
      explicit PBlock(perm_string n, LexicalScope*parent, BL_TYPE t);
@@ -168,39 +182,41 @@ class PBlock  : public PScope, public Statement {

      BL_TYPE bl_type() const { return bl_type_; }

+	// This is only used if this block is the statement list for a
+	// constructor. We look for a PChainConstructor as the first
+	// statement, and if it is there, extract it.
+      PChainConstructor*extract_chain_constructor();
+
+	// If the bl_type() is BL_PAR, it is possible to replace it
+	// with JOIN_NONE or JOIN_ANY. This is to help the parser.
+      void set_join_type(BL_TYPE);
+
      void set_statement(const std::vector<Statement*>&st);

+	// Copy the statement from that block to the front of this
+	// block.
+      void push_statement_front(Statement*that);
+
      virtual void dump(ostream&out, unsigned ind) const;
      virtual NetProc* elaborate(Design*des, NetScope*scope) const;
      virtual void elaborate_scope(Design*des, NetScope*scope) const;
      virtual void elaborate_sig(Design*des, NetScope*scope) const;

    private:
-      const BL_TYPE bl_type_;
+      BL_TYPE bl_type_;
      std::vector<Statement*>list_;
 };

 class PCallTask  : public Statement {

    public:
+      explicit PCallTask(PPackage*pkg, const pform_name_t&n, const list<PExpr*>&parms);
      explicit PCallTask(const pform_name_t&n, const list<PExpr*>&parms);
      explicit PCallTask(perm_string n, const list<PExpr*>&parms);
      ~PCallTask();

      const pform_name_t& path() const;

-      unsigned nparms() const { return parms_.size(); }
-
-      PExpr*&parm(unsigned idx)
-	    { assert(idx < parms_.size());
-	      return parms_[idx];
-	    }
-
-      PExpr* parm(unsigned idx) const
-	    { assert(idx < parms_.size());
-	      return parms_[idx];
-	    }
-
      virtual void dump(ostream&out, unsigned ind) const;
      virtual NetProc* elaborate(Design*des, NetScope*scope) const;

@@ -208,6 +224,19 @@ class PCallTask  : public Statement {
      NetProc* elaborate_sys(Design*des, NetScope*scope) const;
      NetProc* elaborate_usr(Design*des, NetScope*scope) const;

+      NetProc*elaborate_method_(Design*des, NetScope*scope,
+                                bool add_this_flag = false) const;
+      NetProc*elaborate_function_(Design*des, NetScope*scope) const;
+
+      NetProc*elaborate_build_call_(Design*des, NetScope*scope,
+				    NetScope*task, NetExpr*use_this) const;
+      NetProc*elaborate_sys_task_method_(Design*des, NetScope*scope,
+					 NetNet*net,
+					 perm_string method_name,
+					 const char*sys_task_name) const;
+      bool test_task_calls_ok_(Design*des, NetScope*scope) const;
+
+      PPackage*package_;
      pform_name_t path_;
      vector<PExpr*> parms_;
 };
@@ -253,6 +282,26 @@ class PCAssign  : public Statement {
      PExpr*expr_;
 };

+/*
+ * This represents the syntax "super.new(...)". This is not really an
+ * executable statement, but the elaborator will handle these
+ * specially and will remove them from the statement stream. If any
+ */
+class PChainConstructor : public Statement {
+    public:
+      PChainConstructor(const list<PExpr*>&parms);
+      ~PChainConstructor();
+
+      virtual NetProc* elaborate(Design*des, NetScope*scope) const;
+      virtual void dump(ostream&out, unsigned ind) const;
+
+      inline const std::vector<PExpr*>& chain_args(void) const
+      { return parms_; }
+
+    private:
+      std::vector<PExpr*> parms_;
+};
+
 class PCondit  : public Statement {

    public:
@@ -320,6 +369,22 @@ class PDisable  : public Statement {
      pform_name_t scope_;
 };

+class PDoWhile  : public Statement {
+
+    public:
+      PDoWhile(PExpr*ex, Statement*st);
+      ~PDoWhile();
+
+      virtual NetProc* elaborate(Design*des, NetScope*scope) const;
+      virtual void elaborate_scope(Design*des, NetScope*scope) const;
+      virtual void elaborate_sig(Design*des, NetScope*scope) const;
+      virtual void dump(ostream&out, unsigned ind) const;
+
+    private:
+      PExpr*cond_;
+      Statement*statement_;
+};
+
 /*
 * The event statement represents the event delay in behavioral
 * code. It comes from such things as:
@@ -356,6 +421,7 @@ class PEventStatement  : public Statement {
      NetProc* elaborate_st(Design*des, NetScope*scope, NetProc*st) const;

      NetProc* elaborate_wait(Design*des, NetScope*scope, NetProc*st) const;
+      NetProc* elaborate_wait_fork(Design*des, NetScope*scope) const;

    private:
      svector<PEEvent*>expr_;
@@ -378,6 +444,26 @@ class PForce  : public Statement {
      PExpr*expr_;
 };

+class PForeach : public Statement {
+    public:
+      explicit PForeach(perm_string var, const std::list<perm_string>&ix, Statement*stmt);
+      ~PForeach();
+
+      virtual NetProc* elaborate(Design*des, NetScope*scope) const;
+      virtual void elaborate_scope(Design*des, NetScope*scope) const;
+      virtual void elaborate_sig(Design*des, NetScope*scope) const;
+      virtual void dump(ostream&out, unsigned ind) const;
+
+    private:
+      NetProc* elaborate_static_array_(Design*des, NetScope*scope,
+				       const std::vector<netrange_t>&dims) const;
+
+    private:
+      perm_string array_var_;
+      std::vector<perm_string> index_vars_;
+      Statement*statement_;
+};
+
 class PForever : public Statement {
    public:
      explicit PForever(Statement*s);
@@ -396,7 +482,7 @@ class PForStatement  : public Statement {

    public:
      PForStatement(PExpr*n1, PExpr*e1, PExpr*cond,
-		    PExpr*n2, PExpr*e2, Statement*st);
+		    Statement*step, Statement*body);
      ~PForStatement();

      virtual NetProc* elaborate(Design*des, NetScope*scope) const;
@@ -410,8 +496,7 @@ class PForStatement  : public Statement {

      PExpr*cond_;

-      PExpr* name2_;
-      PExpr* expr2_;
+      Statement*step_;

      Statement*statement_;
 };
@@ -451,6 +536,19 @@ class PRelease  : public Statement {
      PExpr*lval_;
 };

+class PReturn  : public Statement {
+
+    public:
+      explicit PReturn(PExpr*e);
+      ~PReturn();
+
+      NetProc* elaborate(Design*des, NetScope*scope) const;
+      virtual void dump(std::ostream&out, unsigned ind) const;
+
+    private:
+      PExpr*expr_;
+};
+
 /*
 * The PTrigger statement sends a trigger to a named event. Take the
 * name here.
@@ -471,7 +569,7 @@ class PTrigger  : public Statement {
 class PWhile  : public Statement {

    public:
-      PWhile(PExpr*e1, Statement*st);
+      PWhile(PExpr*ex, Statement*st);
      ~PWhile();

      virtual NetProc* elaborate(Design*des, NetScope*scope) const;
@@ -484,4 +582,4 @@ class PWhile  : public Statement {
      Statement*statement_;
 };

-#endif
+#endif /* IVL_Statement_H */
@@ -1,7 +1,7 @@
-#ifndef PLI_TYPES
-#define PLI_TYPES
+#ifndef PLI_TYPES_H
+#define PLI_TYPES_H
 /*
- * Copyright (c) 2003 Stephen Williams ([email protected])
+ * Copyright (c) 2003-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # undef HAVE_INTTYPES_H
@@ -85,4 +85,4 @@ typedef char           PLI_BYTE8;
 typedef unsigned char  PLI_UBYTE8;
 #endif

-#endif
+#endif /* PLI_TYPES_H */
@@ -1,7 +1,7 @@
-#ifndef __acc_user_H
-#define __acc_user_H
+#ifndef ACC_USER_H
+#define ACC_USER_H
 /*
- * Copyright (c) 2002 Stephen Williams ([email protected])
+ * Copyright (c) 2002-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -228,6 +228,7 @@ extern PLI_INT32 acc_fetch_size(handle obj);

 extern PLI_INT32 acc_fetch_type(handle obj);
 extern PLI_INT32 acc_fetch_fulltype(handle obj);
+extern PLI_INT32 acc_fetch_paramtype(handle obj);
 extern PLI_INT32 acc_fetch_range(handle object, int *msb, int *lsb);
 extern const char* acc_fetch_type_str(PLI_INT32 type);

@@ -270,4 +271,4 @@ extern char* acc_version(void);

 EXTERN_C_END

-#endif
+#endif /* ACC_USER_H */
@@ -218,17 +218,6 @@ AC_SUBST(strip_dynamic)
 # AC_MSG_RESULT($strip_dynamic)
 ])# AX_LD_RDYNAMIC

-# AX_CPP_PRECOMP
-# --------------
-AC_DEFUN([AX_CPP_PRECOMP],
-[# Darwin requires -no-cpp-precomp
-case "${host}" in
-    *-*-darwin*)
-        CPPFLAGS="-no-cpp-precomp $CPPFLAGS"
-        CFLAGS="-no-cpp-precomp $CFLAGS"
-        ;;
-esac
-])# AX_CPP_PRECOMP

 # AX_C99_STRTOD
 # -------------
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -50,8 +50,8 @@ bool NetEvWait::is_asynchronous()
 	   level sensitive, but the nex_async_ method takes care of
 	   that test. */
      NexusSet*sense = new NexusSet;
-      for (unsigned idx = 0 ;  idx < nevents_ ;  idx += 1) {
-	    NexusSet*tmp = event(idx)->nex_async_();
+      for (unsigned idx = 0 ;  idx < events_.size() ;  idx += 1) {
+	    NexusSet*tmp = events_[idx]->nex_async_();
 	    if (tmp == 0) {
 		  delete sense;
 		  return false;
@@ -2,12 +2,15 @@

 #
 # This shell script exists to run autoconf on source distributions
-# that are pulled from CVS. The configure scripts are not included
-# in CVS, and there are several configure.in files, so it is easiest
-# to just run this script to autoconf wherever needed.
+# that are pulled from git The configure script is not included
+# in git, so it is easiest to just run this script whenever needed
+# to generate the configure script.
 #
 echo "Autoconf in root..."
 autoconf -f

 echo "Precompiling lexor_keyword.gperf"
-gperf -o -i 7 -C -k 1-4,6,9,\$ -L ANSI-C -H keyword_hash -N check_identifier -t ./lexor_keyword.gperf > lexor_keyword.cc
+gperf -o -i 7 -C -k 1-4,6,9,\$ -H keyword_hash -N check_identifier -t ./lexor_keyword.gperf > lexor_keyword.cc
+
+echo "Precompiling vhdlpp/lexor_keyword.gperf"
+(cd vhdlpp ; gperf -o -i 7 --ignore-case -C -k 1-4,6,9,\$ -H keyword_hash -N check_identifier -t ./lexor_keyword.gperf > lexor_keyword.cc )
@@ -12,9 +12,8 @@
 #
 #    You should have received a copy of the GNU Library General Public
 #    License along with this program; if not, write to the Free
-#    Software Foundation, Inc.,
-#    59 Temple Place - Suite 330
-#    Boston, MA 02111-1307, USA
+#    Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#    Boston, MA 02110-1301, USA.
 #
 SHELL = /bin/sh

@@ -44,11 +43,9 @@ INCLUDE_PATH = -I. -I.. -I$(srcdir) -I$(srcdir)/..
 endif

 CPPFLAGS = $(INCLUDE_PATH) @CPPFLAGS@ @DEFS@ @PICFLAG@
-CFLAGS = @WARNING_FLAGS@ @CFLAGS@
+CFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CC@ @CFLAGS@
 LDFLAGS = @LDFLAGS@

-SHARED = @shared@
-
 O = cadpli.o

 all: dep cadpli.vpl $(ALL32)
@@ -80,7 +77,7 @@ ifeq (@MINGW32@,yes)
 endif

 cadpli.vpl: $O ../vvp/libvpi.a ../libveriuser/libveriuser.o
-	$(CC) @shared@ -o $@ $O ../libveriuser/libveriuser.o $(SYSTEM_VPI_LDFLAGS)
+	$(CC) @shared@ $(LDFLAGS) -o $@ $O ../libveriuser/libveriuser.o $(SYSTEM_VPI_LDFLAGS)

 install: all installdirs $(vpidir)/cadpli.vpl

@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <vpi_user.h>
@@ -79,7 +79,7 @@ static void thunker_register(void)
      }
 }

-void (*vlog_startup_routines[])() = {
+void (*vlog_startup_routines[])(void) = {
      thunker_register,
      0
 };
@@ -1,7 +1,7 @@
-#ifndef __ivl_dlfcn_H
-#define __ivl_dlfcn_H
+#ifndef IVL_ivl_dlfcn_H
+#define IVL_ivl_dlfcn_H
 /*
- * Copyright (c) 2001 Stephen Williams ([email protected])
+ * Copyright (c) 2001-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 #if defined(__MINGW32__)
@@ -91,4 +91,4 @@ static __inline__ const char*dlerror(void)
 { return strerror( errno ); }
 #endif

-#endif
+#endif /* IVL_ivl_dlfcn_H */
@@ -1,7 +1,7 @@
-#ifndef __compiler_H
-#define __compiler_H
+#ifndef IVL_compiler_H
+#define IVL_compiler_H
 /*
- * Copyright (c) 1999-2011 Stephen Williams ([email protected])
+ * Copyright (c) 1999-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <list>
@@ -36,6 +36,11 @@
 */
 extern unsigned integer_width;

+/*
+ * The width_cap is the width limit for unsized expressions.
+ */
+extern unsigned width_cap;
+
 /*
 * This is the maximum number of recursive module loops allowed within
 * a generate block.
@@ -92,18 +97,35 @@ extern bool warn_inf_loop;
 extern bool warn_sens_entire_vec;
 extern bool warn_sens_entire_arr;

+/* Warn about level-appropriate anachronisms. */
+extern bool warn_anachronisms;
+
 /* This is true if verbose output is requested. */
 extern bool verbose_flag;

 extern bool debug_scopes;
 extern bool debug_eval_tree;
 extern bool debug_elaborate;
+extern bool debug_emit;
 extern bool debug_synth2;
 extern bool debug_optimizer;

+/* Control evaluation of functions at compile time:
+ *   0 = only for functions in constant expressions
+ *   1 = only for automatic functions
+ *   2 = for all functions
+ * Level 2 should only be used if the user can guarantee that a
+ * function's local variables are never accessed from outside the
+ * function. */
+extern unsigned opt_const_func;
+
 /* Possibly temporary flag to control virtualization of pin arrays */
 extern bool disable_virtual_pins;

+/* The vlog95 code generator does not want the compiler to generate concat-Z
+ * LPM objects so this flag is used to block them from being generated. */
+extern bool disable_concatz_generation;
+
 /* Limit to size of devirtualized arrays */
 extern unsigned long array_size_limit;

@@ -124,6 +146,7 @@ enum generation_t {
      GN_VER2005  = 4,
      GN_VER2005_SV  = 5,
      GN_VER2009  = 6,
+      GN_VER2012  = 7,
      GN_DEFAULT  = 4
 };

@@ -139,6 +162,10 @@ extern bool gn_icarus_misc_flag;
   is false, then skip elaboration of specify behavior. */
 extern bool gn_specify_blocks_flag;

+/* If this flag is true, then elaborate assertions. If this flag is
+   false, then stub out assertion statements. */
+extern bool gn_assertions_flag;
+
 /* If this flag is true, then support/elaborate Verilog-AMS. */
 extern bool gn_verilog_ams_flag;

@@ -161,7 +188,8 @@ extern bool gn_strict_expr_width_flag;
 static inline bool gn_var_can_be_uwire(void)
 {
      if (generation_flag == GN_VER2005_SV ||
-          generation_flag == GN_VER2009)
+          generation_flag == GN_VER2009  ||
+          generation_flag == GN_VER2012)
 	    return true;
      return false;
 }
@@ -169,11 +197,17 @@ static inline bool gn_var_can_be_uwire(void)
 static inline bool gn_system_verilog(void)
 {
      if (generation_flag == GN_VER2005_SV ||
-          generation_flag == GN_VER2009)
+          generation_flag == GN_VER2009  ||
+          generation_flag == GN_VER2012)
 	    return true;
      return false;
 }

+static inline bool gn_modules_nest(void)
+{
+      return gn_system_verilog();
+}
+
 /* The bits of these GN_KEYWORDS_* constants define non-intersecting
   sets of keywords. The compiler enables groups of keywords by setting
   lexor_keyword_mask with the OR of the bits for the keywords to be
@@ -185,6 +219,7 @@ enum { GN_KEYWORDS_1364_1995        = 0x0001,
       GN_KEYWORDS_VAMS_2_3         = 0x0010,
       GN_KEYWORDS_1800_2005        = 0x0020,
       GN_KEYWORDS_1800_2009        = 0x0040,
+       GN_KEYWORDS_1800_2012        = 0x0080,
       GN_KEYWORDS_ICARUS           = 0x8000
 };
 extern int lexor_keyword_mask;
@@ -248,4 +283,4 @@ extern void cleanup_sys_func_table();
 */
 extern ivl_sfunc_as_task_t def_sfunc_as_task;

-#endif
+#endif /* IVL_compiler_H */
@@ -1,7 +1,7 @@
-#ifndef __config_H                                           /* -*- c++ -*- */
-#define __config_H
+#ifndef IVL_config_H                                           /* -*- c++ -*- */
+#define IVL_config_H
 /*
- * Copyright (c) 2001-2010 Stephen Williams ([email protected])
+ * Copyright (c) 2001-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 #if defined(__cplusplus)
@@ -53,6 +53,8 @@
 /* These two are needed by the lxt and lxt2 files (copied from GTKWave). */
 # undef HAVE_ALLOCA_H
 # undef HAVE_FSEEKO
+/* And this is needed by the fst files (copied from GTKWave). */
+# undef HAVE_LIBPTHREAD

 /*
 * Define this if you want to compile vvp with memory freeing and
@@ -60,4 +62,4 @@
 */
 # undef CHECK_WITH_VALGRIND

-#endif /* __config_H */
+#endif /* IVL_config_H */
@@ -8,20 +8,21 @@ AC_CONFIG_HEADER(vpi/vpi_config.h)
 AC_CONFIG_HEADER(libveriuser/config.h)
 AC_CONFIG_HEADER(tgt-vvp/vvp_config.h)
 AC_CONFIG_HEADER(tgt-vhdl/vhdl_config.h)
+AC_CONFIG_HEADER(tgt-pcb/pcb_config.h)

 AC_CANONICAL_HOST
 dnl Checks for programs.
 AC_PROG_CC
 # AC_PROG_CC_C99 is only available in autoconf version 2.60 and later.
-# If you must use an older version then comment out the following two
-# lines, but be warned that there could be issues with finding the
-# nan(), etc. functions. It is really best to upgrade to a supported
-# version of autoconf.
 AC_PREREQ([2.60])
 AC_PROG_CC_C99
 AC_PROG_CXX
 AC_PROG_RANLIB
+AC_CHECK_TOOL(LD, ld, false)
+AC_CHECK_TOOL(AR, ar, false)
+AC_CHECK_TOOL(DLLTOOL, dlltool, false)
 AC_CHECK_TOOL(STRIP, strip, true)
+AC_CHECK_TOOL(WINDRES,windres,false)
 AC_CHECK_PROGS(XGPERF,gperf,none)
 AC_CHECK_PROGS(MAN,man,none)
 AC_CHECK_PROGS(PS2PDF,ps2pdf,none)
@@ -31,7 +32,7 @@ then
 	echo ""
        echo "*** Warning: No suitable gperf found. ***"
 	echo "    The gperf package is essential for building ivl from"
-	echo "    CVS sources, or modifying the parse engine of ivl itself."
+	echo "    git sources, or modifying the parse engine of ivl itself."
 	echo "    You can get away without it when simply building from"
 	echo "    snapshots or major releases."
 	echo ""
@@ -80,12 +81,27 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
 CFLAGS="$iverilog_temp_cflags"

 AC_SUBST(DEPENDENCY_FLAG, [-MD])
-AC_SUBST(WARNING_FLAGS, ["-Wall -Wshadow"])
-AC_SUBST(WARNING_FLAGS_CXX, ["$iverilog_wextra_flag"])
+AC_SUBST(WARNING_FLAGS, ["-Wall $iverilog_wextra_flag -Wshadow"])
+AC_SUBST(WARNING_FLAGS_CC, [""])
+AC_SUBST(WARNING_FLAGS_CXX, [""])
 fi

 AC_LANG(C++)

+AC_ARG_WITH([m32], [AC_HELP_STRING([--with-m32], [Compile 32-bit on x86_64])],
+            [ with_m32=yes ],[ with_m32=no ])
+
+AS_IF( [test "x$with_m32" = xyes],
+    [ AC_MSG_NOTICE([Compiling for 32-bit environment - needs gcc on x86_64])
+      LDTARGETFLAGS="-m elf_i386"
+      CTARGETFLAGS="-m32"
+    ],
+    [])
+
+CFLAGS="$CTARGETFLAGS $CFLAGS"
+CXXFLAGS="$CTARGETFLAGS $CXXFLAGS"
+LDFLAGS="$CTARGETFLAGS $LDFLAGS"
+
 # Check that we are using either the GNU compilers or the Sun compilers
 # but not a mixture of the two (not currently supported).
 AC_CHECK_DECL(__SUNPRO_CC, using_sunpro_cc=1, using_sunpro_cc=0)
@@ -106,7 +122,11 @@ else
  fi
 fi

+iverilog_temp_cxxflags="$CXXFLAGS"
+CXXFLAGS="-DHAVE_DECL_BASENAME $CXXFLAGS"
+
 AC_CHECK_HEADERS(getopt.h inttypes.h libiberty.h iosfwd sys/wait.h)
+CXXFLAGS="$iverilog_temp_cxxflags"

 AC_CHECK_SIZEOF(unsigned long long)
 AC_CHECK_SIZEOF(unsigned long)
@@ -173,6 +193,11 @@ if test -z "$DLLIB" ; then
 AC_CHECK_LIB(dld,shl_load,[DLLIB=-ldld])
 fi
 AC_SUBST(DLLIB)
+AC_SUBST(LDRELOCFLAGS)
+
+AC_SUBST(CTARGETFLAGS)
+AC_SUBST(LDTARGETFLAGS)
+

 AC_PROG_INSTALL

@@ -189,9 +214,6 @@ AX_LD_EXTRALIBS
 # CFLAGS inherited by cadpli/Makefile?
 AX_C_PICFLAG

-# may modify CPPFLAGS and CFLAGS
-AX_CPP_PRECOMP
-
 # may modify LDFLAGS
 AX_C99_STRTOD

@@ -297,6 +319,4 @@ AC_MSG_ERROR(cannot configure white space in libdir: $libdir)
 fi
 AC_MSG_RESULT(ok)

-# XXX disable tgt-fpga for the moment
-
-AC_OUTPUT(Makefile ivlpp/Makefile vhdlpp/Makefile vvp/Makefile vpi/Makefile driver/Makefile driver-vpi/Makefile cadpli/Makefile libveriuser/Makefile tgt-null/Makefile tgt-stub/Makefile tgt-vvp/Makefile tgt-vhdl/Makefile tgt-fpga/Makefile tgt-verilog/Makefile tgt-pal/Makefile tgt-vlog95/Makefile)
+AC_OUTPUT(Makefile ivlpp/Makefile vhdlpp/Makefile vvp/Makefile vpi/Makefile driver/Makefile driver-vpi/Makefile cadpli/Makefile libveriuser/Makefile tgt-null/Makefile tgt-stub/Makefile tgt-vvp/Makefile tgt-vhdl/Makefile tgt-fpga/Makefile tgt-verilog/Makefile tgt-pal/Makefile tgt-vlog95/Makefile tgt-pcb/Makefile tgt-blif/Makefile tgt-sizer/Makefile)
@@ -1,3 +1,3 @@
 // These are correct and are used to find the base (zero) pin.
-thisSubtraction:netlist.h:4164
-thisSubtraction:netlist.h:4173
+thisSubtraction:netlist.h:4938
+thisSubtraction:netlist.h:4947
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2010 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2013 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,18 +14,19 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"

+# include  <algorithm>
+# include  <vector>
 # include  <cstdlib>
 # include  "netlist.h"
 # include  "netmisc.h"
 # include  "functor.h"
 # include  "compiler.h"
 # include  "ivl_assert.h"
-# include  <vector>


 /*
@@ -42,11 +43,14 @@ struct cprop_functor  : public functor_t {
      virtual void signal(Design*des, NetNet*obj);
      virtual void lpm_add_sub(Design*des, NetAddSub*obj);
      virtual void lpm_compare(Design*des, NetCompare*obj);
-      virtual void lpm_compare_eq_(Design*des, NetCompare*obj);
+      virtual void lpm_concat(Design*des, NetConcat*obj);
      virtual void lpm_ff(Design*des, NetFF*obj);
      virtual void lpm_logic(Design*des, NetLogic*obj);
      virtual void lpm_mux(Design*des, NetMux*obj);
-};
+      virtual void lpm_part_select(Design*des, NetPartSelect*obj);
+
+      void lpm_compare_eq_(Design*des, NetCompare*obj);
+ };

 void cprop_functor::signal(Design*, NetNet*)
 {
@@ -74,6 +78,50 @@ void cprop_functor::lpm_compare_eq_(Design*, NetCompare*)
 {
 }

+void cprop_functor::lpm_concat(Design*des, NetConcat*obj)
+{
+	// Sorry, I don't know how to constant-propagate through
+	// transparent concatenations.
+      if (obj->transparent())
+	    return;
+
+      verinum result (verinum::Vz, obj->width());
+      unsigned off = 0;
+
+      for (unsigned idx = 1 ; idx < obj->pin_count() ; idx += 1) {
+	    Nexus*nex = obj->pin(idx).nexus();
+	      // If there are non-constant drivers, then give up.
+	    if (! nex->drivers_constant())
+		  return;
+
+	    verinum tmp = nex->driven_vector();
+	    result.set(off, tmp);
+	    off += tmp.len();
+      }
+
+      if (debug_optimizer)
+	    cerr << obj->get_fileline() << ": cprop_functor::lpm_concat: "
+		 << "Replace NetConcat with " << result << "." << endl;
+
+
+      NetScope*scope = obj->scope();
+
+	// Create a NetConst object to carry the result. Give it the
+	// same name as the Concat object that we are replacing, and
+	// link the NetConst to the NetConcat object. Then delete the
+	// concat that is now replaced.
+      NetConst*result_obj = new NetConst(scope, obj->name(), result);
+      result_obj->set_line(*obj);
+      des->add_node(result_obj);
+      connect(obj->pin(0), result_obj->pin(0));
+
+	// Note that this will leave the const inputs to dangle. They
+	// will be reaped by other passes of cprop_functor.
+      delete obj;
+
+      count += 1;
+}
+
 void cprop_functor::lpm_ff(Design*, NetFF*obj)
 {
 	// Look for and count unlinked FF outputs. Note that if the
@@ -115,11 +163,6 @@ void cprop_functor::lpm_mux(Design*des, NetMux*obj)
      if (! sel_nex->drivers_constant())
 	    return;

-	// If the select input is assigned or forced, then again there
-	// is nothing we can do here.
-      if (sel_nex->assign_lval())
-	    return;
-
 	// If the constant select is 'bz or 'bx, then give up.
      verinum::V sel_val = sel_nex->driven_value();
      if (sel_val == verinum::Vz || sel_val == verinum::Vx)
@@ -150,6 +193,142 @@ void cprop_functor::lpm_mux(Design*des, NetMux*obj)
      count += 1;
 }

+static bool compare_base(NetPartSelect*a, NetPartSelect*b)
+{
+      return a->base() < b->base();
+}
+
+/*
+ * This optimization searches for Nexa that are driven only by
+ * NetPartSelect(PV) outputs. These might turn from Verilog input that
+ * looks like this:
+ *    wire [7:0] foo
+ *    assign foo[7:4] = a;
+ *    assign foo[3:0] = b;
+ * The idea is to convert the part selects of the above to a single
+ * concatenation that looks like this:
+ *    assign foo = {a, b};
+ */
+void cprop_functor::lpm_part_select(Design*des, NetPartSelect*obj)
+{
+      if (obj->dir() != NetPartSelect::PV)
+	    return;
+
+      NetScope*scope = obj->scope();
+      Nexus*nex = obj->pin(1).nexus();
+      vector<NetPartSelect*> obj_set;
+
+      for (Link*cur = nex->first_nlink() ; cur ; cur = cur->next_nlink()) {
+
+	      // If this is an input (or passive) then ignore it.
+	    if (cur->get_dir() != Link::OUTPUT)
+		  continue;
+
+	      // Check to see if this is the output of a
+	      // NetPartSelect::PV. If not, then give up on the blend.
+	    NetPins*tmp_obj = cur->get_obj();
+	    unsigned tmp_pin = cur->get_pin();
+
+	    NetPartSelect*cur_obj = dynamic_cast<NetPartSelect*> (tmp_obj);
+	    if (cur_obj == 0)
+		  return;
+
+	    if (cur_obj->dir() != NetPartSelect::PV)
+		  return;
+
+	    if (tmp_pin != 1)
+		  return;
+
+	    obj_set.push_back(cur_obj);
+      }
+
+      if (obj_set.size() < 2)
+	    return;
+
+      if (debug_optimizer)
+	    cerr << obj->get_fileline() << ": cprop::lpm_part_select: "
+		 << "Found " << obj_set.size() << " NetPartSelect(PV) objects."
+		 << endl;
+
+	// Sort by increasing base offset.
+      sort(obj_set.begin(), obj_set.end(), compare_base);
+
+	// Check and make sure there are no overlaps. If there are,
+	// then give up on this optimization.
+      for (size_t idx = 1 ; idx < obj_set.size() ; idx += 1) {
+	    unsigned top = obj_set[idx-1]->base() + obj_set[idx-1]->width();
+	    if (top > obj_set[idx]->base()) {
+		  if (debug_optimizer)
+			cerr << obj->get_fileline() << ": cprop::lpm_part_select: "
+			     << "Range [" << obj_set[idx-1]->base()
+			     << " " << top << ") overlaps PV starting at "
+			     << obj_set[idx]->base() << ". Give up." << endl;
+		  return;
+	    }
+      }
+
+	// Check if the tail runs off the end of the target. If so it
+	// should be possible to replace it with a bit select to
+	// shorten the object for the target, but for now just give up.
+      unsigned sig_width = nex->vector_width();
+      if (obj_set.back()->base() + obj_set.back()->width() > sig_width) {
+	    if (debug_optimizer)
+		  cerr << obj->get_fileline() << ": cprop::lpm_part_select: "
+		       << "Range [" << obj_set.back()->base()
+		       << ":" << (obj_set.back()->base() + obj_set.back()->width() - 1)
+		       << "] runs off the end of target." << endl;
+	    return;
+      }
+
+	// Figure out how many components we are going to need.
+      unsigned part_count = 0;
+      unsigned off = 0;
+      for (size_t idx = 0 ; idx < obj_set.size() ; idx += 1) {
+	    if (obj_set[idx]->base() > off) {
+		  off = obj_set[idx]->base();
+		  part_count += 1;
+	    }
+	    off += obj_set[idx]->width();
+	    part_count += 1;
+      }
+
+      if (off < sig_width)
+	    part_count += 1;
+
+      NetConcat*concat = new NetConcat(scope, scope->local_symbol(),
+				       sig_width, part_count);
+      concat->set_line(*obj);
+      des->add_node(concat);
+      connect(concat->pin(0), obj->pin(1));
+
+      off = 0;
+      size_t concat_pin = 1;
+      for (size_t idx = 0 ; idx < obj_set.size() ; idx += 1) {
+	    NetPartSelect*cobj = obj_set[idx];
+	    if (cobj->base() > off) {
+		  NetNet*zzz = make_const_z(des, scope, cobj->base()-off);
+		  connect(concat->pin(concat_pin), zzz->pin(0));
+		  concat_pin += 1;
+		  off = cobj->base();
+	    }
+	    connect(concat->pin(concat_pin), cobj->pin(0));
+	    concat_pin += 1;
+	    off += cobj->width();
+      }
+      if (off < sig_width) {
+	    NetNet*zzz = make_const_z(des, scope, sig_width-off);
+	    connect(concat->pin(concat_pin), zzz->pin(0));
+	    concat_pin += 1;
+      }
+      ivl_assert(*obj, concat_pin == concat->pin_count());
+
+      for (size_t idx = 0 ; idx < obj_set.size() ; idx += 1) {
+	    delete obj_set[idx];
+      }
+
+      count += 1;
+}
+
 /*
 * This functor looks to see if the constant is connected to nothing
 * but signals. If that is the case, delete the dangling constant and
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2011 Stephen Williams ([email protected])
+ * Copyright (c) 1998-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -28,6 +28,10 @@
 # include  "netlist.h"
 # include  "compiler.h"
 # include  "discipline.h"
+# include  "netclass.h"
+# include  "netdarray.h"
+# include  "netqueue.h"
+# include  "netvector.h"
 # include  "ivl_assert.h"
 # include  "PExpr.h"

@@ -40,6 +44,12 @@ static ostream& operator<< (ostream&o, NetBlock::Type t)
 	  case NetBlock::PARA:
 	    o << "fork";
 	    break;
+	  case NetBlock::PARA_JOIN_NONE:
+	    o << "fork-join_none";
+	    break;
+	  case NetBlock::PARA_JOIN_ANY:
+	    o << "fork-join_any";
+	    break;
      }
      return o;
 }
@@ -98,6 +108,15 @@ ostream& operator << (ostream&o, ivl_variable_type_t val)
 	  case IVL_VT_STRING:
 	    o << "string";
 	    break;
+	  case IVL_VT_DARRAY:
+	    o << "darray";
+	    break;
+	  case IVL_VT_CLASS:
+	    o << "class";
+	    break;
+	  case IVL_VT_QUEUE:
+	    o << "queue";
+	    break;
      }
      return o;
 }
@@ -130,6 +149,93 @@ ostream& operator << (ostream&o, ivl_switch_type_t val)
      return o;
 }

+ostream& operator << (ostream&fd, PortType::Enum val)
+{
+      switch (val) {
+	  case PortType::NOT_A_PORT:
+	    fd << "NOT_A_PORT";
+	    break;
+	  case PortType::PIMPLICIT:
+	    fd << "PIMPLICIT";
+	    break;
+	  case PortType::PINPUT:
+	    fd << "PINPUT";
+	    break;
+	  case PortType::POUTPUT:
+	    fd << "POUTPUT";
+	    break;
+	  case PortType::PINOUT:
+	    fd << "PINOUT";
+	    break;
+	  case PortType::PREF:
+	    fd << "PREF";
+	    break;
+	  default:
+	    fd << "PortType::Enum::?";
+	    break;
+      }
+
+      return fd;
+}
+
+ostream& operator << (ostream&fd, NetCaseCmp::kind_t that)
+{
+      switch (that) {
+	  case NetCaseCmp::EEQ:
+	    fd << "===";
+	    break;
+	  case NetCaseCmp::NEQ:
+	    fd << "!==";
+	    break;
+	  case NetCaseCmp::XEQ:
+	    fd << "==?";
+	    break;
+	  case NetCaseCmp::ZEQ:
+	    fd << "==z?";
+	    break;
+      }
+      return fd;
+}
+
+ostream& ivl_type_s::debug_dump(ostream&o) const
+{
+      o << typeid(*this).name();
+      return o;
+}
+
+ostream& netclass_t::debug_dump(ostream&fd) const
+{
+      fd << "class " << name_ << "{";
+      for (size_t idx = 0 ; idx < property_table_.size() ; idx += 1) {
+	    if (idx != 0) fd << "; ";
+	    if (property_table_[idx].type)
+		  property_table_[idx].type->debug_dump(fd);
+	    else
+		  fd << "NO_TYPE";
+	    fd << " " << property_table_[idx].name;
+      }
+      fd << "}";
+      return fd;
+}
+
+ostream& netdarray_t::debug_dump(ostream&o) const
+{
+      o << "dynamic array of " << *element_type();
+      return o;
+}
+
+ostream& netqueue_t::debug_dump(ostream&fd) const
+{
+      fd << "queue of " << *element_type();
+      return fd;
+}
+
+ostream& netvector_t::debug_dump(ostream&o) const
+{
+      o << type_ << (signed_? " signed" : " unsigned") << packed_dims_;
+      return o;
+}
+
 static inline void dump_scope_path(ostream&o, const NetScope*scope)
 {
      const NetScope*parent = scope->parent();
@@ -137,10 +243,7 @@ static inline void dump_scope_path(ostream&o, const NetScope*scope)
 	    dump_scope_path(o, parent);
 	    o << ".";
      }
-      const hname_t name = scope->fullname();
-      o << name.peek_name();
-      if (name.has_number())
-	    o << "[" << name.peek_number() << "]";
+      o << scope->fullname();
 }

 ostream& operator <<(ostream&o, struct __ScopePathManip marg)
@@ -150,6 +253,77 @@ ostream& operator <<(ostream&o, struct __ScopePathManip marg)
      return o;
 }

+ostream& operator <<(ostream&o, struct __ObjectPathManip marg)
+{
+      if (marg.obj != 0) {
+	    dump_scope_path(o, marg.obj->scope());
+	    o << "." << marg.obj->name();
+      }
+      return o;
+}
+
+ostream& operator <<(ostream&fd, Link::DIR dir)
+{
+      switch (dir) {
+	  case Link::PASSIVE:
+	    fd << "PASSIVE";
+	    break;
+	  case Link::INPUT:
+	    fd << "INPUT";
+	    break;
+	  case Link::OUTPUT:
+	    fd << "OUTPUT";
+	    break;
+	  default:
+	    fd << "<" << (int)dir << ">";
+	    break;
+      }
+      return fd;
+}
+
+void NetPins::show_type(ostream&fd) const
+{
+      fd << typeid(*this).name();
+}
+
+void NetObj::show_type(ostream&fd) const
+{
+      fd << typeid(*this).name() << "[" << scope_path(scope_) << "." << name_ << "]";
+}
+
+struct __ShowTypeManip { const NetPins*pins; };
+inline __ShowTypeManip show_type(const NetPins*pins)
+{ __ShowTypeManip tmp; tmp.pins = pins; return tmp; }
+
+inline ostream& operator << (ostream&fd, __ShowTypeManip man)
+{
+      if (man.pins == 0)
+	    fd << "NexusSet";
+      else
+	    man.pins->show_type(fd);
+      return fd;
+}
+
+
+void Link::dump_link(ostream&fd, unsigned ind) const
+{
+      const Link*cur;
+      const Nexus*nex = nexus();
+
+      if (nex == 0) {
+	    fd << setw(ind) << "" << "<unlinked>" << endl;
+	    return;
+      }
+
+      for (cur = nex->first_nlink() ; cur; cur = cur->next_nlink()) {
+	    const NetPins*obj = cur->get_obj();
+	    unsigned pin = cur->get_pin();
+	    fd << setw(ind) << "" << "Pin " << pin
+	       << " of " << show_type(obj)
+	       << ", dir=" << cur->dir_ << endl;
+      }
+}
+
 void NetBranch::dump(ostream&o, unsigned ind) const
 {
      static const char*pin_names[2] = {
@@ -187,16 +361,42 @@ void NetDelaySrc::dump(ostream&o, unsigned ind) const
      dump_node_pins(o, ind+4);
 }

+static inline ostream&operator<<(ostream&out, const netrange_t&that)
+{
+      if (that.defined())
+	    out << "[" << that.get_msb() << ":" << that.get_lsb() << "]";
+      else
+	    out << "[]";
+
+      return out;
+}
+
+ostream&operator<<(ostream&out, const list<netrange_t>&rlist)
+{
+      for (list<netrange_t>::const_iterator cur = rlist.begin()
+		 ; cur != rlist.end() ; ++cur) {
+	    out << *cur;
+      }
+      return out;
+}
+
+ostream&operator<<(ostream&out, const vector<netrange_t>&rlist)
+{
+      for (vector<netrange_t>::const_iterator cur = rlist.begin()
+		 ; cur != rlist.end() ; ++cur) {
+	    out << *cur;
+      }
+      return out;
+}
+
 /* Dump a net. This can be a wire or register. */
 void NetNet::dump_net(ostream&o, unsigned ind) const
 {
      o << setw(ind) << "" << type() << ": " << name()
-	<< "[" << s0_ << ":" << e0_ << " count=" << pin_count() << "]";
+	<< unpacked_dims_ << " unpacked dims=" << unpacked_dimensions();
+      o << " pin_count=" << pin_count();
      if (local_flag_)
 	    o << " (local)";
-      o << " " << data_type_;
-      if (signed_)
-	    o << " signed";
      switch (port_type_) {
 	  case NetNet::NOT_A_PORT:
 	    break;
@@ -212,11 +412,16 @@ void NetNet::dump_net(ostream&o, unsigned ind) const
 	  case NetNet::PINOUT:
 	    o << " inout";
 	    break;
+	  case NetNet::PREF:
+	    o <<" ref";
+	    break;
      }

      if (ivl_discipline_t dis = get_discipline())
 	    o << " discipline=" << dis->name();

+      if (net_type_)  o << " " << *net_type_;
+
      o << " (eref=" << peek_eref() << ", lref=" << peek_lref() << ")";
      if (scope())
 	    o << " scope=" << scope_path(scope());
@@ -382,8 +587,12 @@ void NetCompare::dump_node(ostream&o, unsigned ind) const

 void NetConcat::dump_node(ostream&o, unsigned ind) const
 {
-      o << setw(ind) << "" << "NetConcat: "
-	<< name();
+      if (transparent_)
+	    o << setw(ind) << "" << "NetConcat8: ";
+      else
+	    o << setw(ind) << "" << "NetConcat: ";
+      o << name();
+
      if (rise_time())
 	    o << " #(" << *rise_time()
 	      << "," << *fall_time() << "," << *decay_time() << ")";
@@ -446,19 +655,14 @@ void NetBUFZ::dump_node(ostream&o, unsigned ind) const

 void NetCaseCmp::dump_node(ostream&o, unsigned ind) const
 {
-      if (eeq_)
-	    o << setw(ind) << "" << "case compare === : " << name() << endl;
-      else
-	    o << setw(ind) << "" << "case compare !== : " << name() << endl;
+      o << setw(ind) << "" << "case compare " << kind_ << ": " << name() << endl;

      dump_node_pins(o, ind+4);
 }

 void NetConst::dump_node(ostream&o, unsigned ind) const
 {
-      o << setw(ind) << "" << "constant " << width_ << "'b";
-      for (unsigned idx = width_ ;  idx > 0 ;  idx -= 1)
-	    o << value_[idx-1];
+      o << setw(ind) << "" << "constant " << value_;
      o << ": " << name();
      if (rise_time())
 	    o << " #(" << *rise_time()
@@ -599,6 +803,21 @@ void NetPartSelect::dump_node(ostream&o, unsigned ind) const
      dump_obj_attr(o, ind+4);
 }

+void NetSubstitute::dump_node(ostream&fd, unsigned ind) const
+{
+      fd << setw(ind) << "" << "NetSubstitute: "
+	 << name();
+      if (rise_time())
+	    fd << " #(" << *rise_time()
+	       << "," << *fall_time()
+	       << "," << *decay_time() << ")";
+      else
+	    fd << " #(.,.,.)";
+      fd << " width=" << wid_ << " base=" << off_ <<endl;
+      dump_node_pins(fd, ind+4);
+      dump_obj_attr(fd, ind+4);
+}
+
 void NetReplicate::dump_node(ostream&o, unsigned ind) const
 {
      o << setw(ind) << "" << "NetReplicate: "
@@ -680,12 +899,13 @@ void NetUserFunc::dump_node(ostream&o, unsigned ind) const

 void NetTaskDef::dump(ostream&o, unsigned ind) const
 {
-      o << setw(ind) << "" << "task " << scope_path(scope_) << ";" << endl;
+      o << setw(ind) << "" << "task " << scope_path(scope()) << ";" << endl;

-      for (unsigned idx = 0 ;  idx < ports_.count() ;  idx += 1) {
+      for (unsigned idx = 0 ;  idx < port_count() ;  idx += 1) {
+	    const NetNet*pnet = port(idx);
 	    o << setw(ind+4) << "";
-	    assert(ports_[idx]);
-	    switch (ports_[idx]->port_type()) {
+	    assert(pnet);
+	    switch (pnet->port_type()) {
 		case NetNet::PINPUT:
 		  o << "input ";
 		  break;
@@ -699,10 +919,13 @@ void NetTaskDef::dump(ostream&o, unsigned ind) const
 		  o << "NOT_A_PORT ";
 		  break;
 	    }
-	    o << ports_[idx]->name() << ";" << endl;
+	    o << pnet->name() << ";" << endl;
      }

-      proc_->dump(o, ind+4);
+      if (proc_)
+	    proc_->dump(o, ind+4);
+      else
+	    o << setw(ind+4) << "" << "MISSING PROCEDURAL CODE" << endl;

      o << setw(ind) << "" << "endtask" << endl;
 }
@@ -792,16 +1015,18 @@ void NetAlloc::dump(ostream&o, unsigned ind) const

 void NetAssign_::dump_lval(ostream&o) const
 {
-      if (sig_) {
-	    o << sig_->name();
-	    if (word_) {
-		  o << "[word=" << *word_ << "]";
-	    }
-	    if (base_) {
-		  o << "[" << *base_ << " +: " << lwid_ << "]";
-	    }
-      } else {
-	    o << "";
+      if (sig_) o << sig_->name();
+      else if (nest_) nest_->dump_lval(o);
+      else o << "<?>";
+
+      if (! member_.nil()) {
+	    o << "." << member_;
+      }
+      if (word_) {
+	    o << "[word=" << *word_ << "]";
+      }
+      if (base_) {
+	    o << "[" << *base_ << " +: " << lwid_ << "]";
      }
 }

@@ -824,7 +1049,10 @@ void NetAssign::dump(ostream&o, unsigned ind) const
      o << setw(ind) << "";
      dump_lval(o);

-      o << " = ";
+      if (op_)
+	    o << " " << op_ << "= ";
+      else
+	    o << " = ";

      if (const NetExpr*de = get_delay())
 	    o << "#(" << *de << ") ";
@@ -893,7 +1121,7 @@ void NetCase::dump(ostream&o, unsigned ind) const
 	    break;
      }

-      for (unsigned idx = 0 ;  idx < nitems_ ;  idx += 1) {
+      for (unsigned idx = 0 ;  idx < items_.size() ;  idx += 1) {
 	    o << setw(ind+2) << "";
 	    if (items_[idx].guard)
 		  o << *items_[idx].guard << ":";
@@ -951,8 +1179,17 @@ void NetDeassign::dump(ostream&o, unsigned ind) const

 void NetDisable::dump(ostream&o, unsigned ind) const
 {
-      o << setw(ind) << "" << "disable " << scope_path(target_) << "; "
-	<< "/* " << get_fileline() << " */" << endl;
+      o << setw(ind) << "" << "disable ";
+      if (target_) o << scope_path(target_);
+      else o << "fork";
+      o << "; " << "/* " << get_fileline() << " */" << endl;
+}
+
+void NetDoWhile::dump(ostream&o, unsigned ind) const
+{
+      o << setw(ind) << "" << "do" << endl;
+      proc_->dump(o, ind+3);
+      o << setw(ind) << "" << "while (" << *cond_ << ");" << endl;
 }

 void NetEvProbe::dump_node(ostream&o, unsigned ind) const
@@ -983,7 +1220,15 @@ void NetEvTrig::dump(ostream&o, unsigned ind) const

 void NetEvWait::dump(ostream&o, unsigned ind) const
 {
-      o << setw(ind) <<"" << "@(";
+      o << setw(ind) << "";
+
+	/* Check for a wait fork. */
+      if ((nevents() == 1) && (event(0) == 0)) {
+	    o << "wait fork;";
+	    return;
+      }
+
+      o << "@(";

      if (nevents() > 0)
 	    o << event(0)->name();
@@ -1007,6 +1252,12 @@ ostream& operator << (ostream&out, const NetEvWait&obj)

 void NetEvWait::dump_inline(ostream&o) const
 {
+	/* Check for a wait fork. */
+      if ((nevents() == 1) && (event(0) == 0)) {
+	    o << "wait fork;";
+	    return;
+      }
+
      o << "@(";

      if (nevents() > 0)
@@ -1031,6 +1282,13 @@ void NetForever::dump(ostream&o, unsigned ind) const
      statement_->dump(o, ind+2);
 }

+void NetForLoop::dump(ostream&fd, unsigned ind) const
+{
+      fd << setw(ind) << "" << "FOR LOOP index=" << index_->name() << endl;
+      statement_->dump(fd, ind+4);
+      step_statement_->dump(fd, ind+4);
+}
+
 void NetFree::dump(ostream&o, unsigned ind) const
 {
      o << setw(ind) << "// free storage : " << scope_path(scope_) << endl;
@@ -1038,12 +1296,11 @@ void NetFree::dump(ostream&o, unsigned ind) const

 void NetFuncDef::dump(ostream&o, unsigned ind) const
 {
-      o << setw(ind) << "" << "function definition for " << scope_path(scope_) << endl;
+      o << setw(ind) << "" << "function definition for " << scope_path(scope()) << endl;
      if (result_sig_) {
 	    o << setw(ind+2) << "" << "Return signal: ";
 	    if (result_sig_->get_signed()) o << "+";
-	    o << result_sig_->name() << "[" << result_sig_->msb() << ":"
-	      << result_sig_->lsb() << "]" << endl;
+	    o << result_sig_->name() << endl;
      }
      o << setw(ind+2) << "" << "Arguments: ";
      if (port_count() == 0) o << "<none>";
@@ -1065,13 +1322,12 @@ void NetFuncDef::dump(ostream&o, unsigned ind) const
 		  break;
 	    }
 	    if (port(idx)->get_signed()) o << "+";
-	    o << port(idx)->name() << "[" << port(idx)->msb() << ":"
-	      << port(idx)->lsb() << "]" << endl;
+	    o << port(idx)->name() << endl;
      }
-      if (statement_)
-	    statement_->dump(o, ind+2);
+      if (proc_)
+	    proc_->dump(o, ind+2);
      else
-	    o << setw(ind+2) << "" << "// NO STATEMENT" << endl;
+	    o << setw(ind+2) << "" << "MISSING PROCEDURAL CODE" << endl;
 }

 void NetPDelay::dump(ostream&o, unsigned ind) const
@@ -1104,6 +1360,11 @@ void NetRepeat::dump(ostream&o, unsigned ind) const
      statement_->dump(o, ind+2);
 }

+void netclass_t::dump_scope(ostream&fd) const
+{
+      class_scope_->dump(fd);
+}
+
 void NetScope::dump(ostream&o) const
 {
 	/* This is a constructed hierarchical name. */
@@ -1112,7 +1373,10 @@ void NetScope::dump(ostream&o) const
      print_type(o);
      if (is_auto()) o << " (automatic)";
      if (is_cell()) o << " (cell)";
-      o << endl;
+      if (nested_module()) o << " (nested)";
+      if (program_block()) o << " (program)";
+      o << " " << children_.size() << " children, "
+	<< classes_.size() << " classes" << endl;

      for (unsigned idx = 0 ;  idx < attr_cnt() ;  idx += 1)
 	    o << "    (* " << attr_key(idx) << " = "
@@ -1126,7 +1390,10 @@ void NetScope::dump(ostream&o) const
 	    map<perm_string,param_expr_t>::const_iterator pp;
 	    for (pp = parameters.begin()
 		       ; pp != parameters.end() ;  ++ pp ) {
-		  o << "    parameter ";
+		  if ((*pp).second.is_annotatable)
+			o << "    specparam ";
+		  else
+			o << "    parameter ";

 		  o << pp->second.type << " ";

@@ -1173,12 +1440,6 @@ void NetScope::dump(ostream&o) const

 		  o << ";" << endl;
 	    }
-
-	    for (pp = localparams.begin()
-		       ; pp != localparams.end() ;  ++ pp ) {
-		  o << "    localparam " << (*pp).first << " = "  <<
-			*(*pp).second.val << ";" << endl;
-	    }
      }

 	/* Dump the saved defparam assignments here. */
@@ -1203,9 +1464,9 @@ void NetScope::dump(ostream&o) const
      o << "    enum sets {" << endl;

 	/* Dump the enumerations and enum names in this scope. */
-      for (list<netenum_t*>::const_iterator cur = enum_sets_.begin()
+      for (map<const enum_type_t*,netenum_t*>::const_iterator cur = enum_sets_.begin()
 		 ; cur != enum_sets_.end() ; ++ cur) {
-	    o << "      " << *cur << endl;
+	    o << "      " << cur->second << endl;
      }
      o << "    }" << endl;

@@ -1230,27 +1491,6 @@ void NetScope::dump(ostream&o) const
 	    cur->second->dump_net(o, 4);
      }

-	// Dump specparams
-      typedef map<perm_string,spec_val_t>::const_iterator specparam_it_t;
-      for (specparam_it_t cur = specparams.begin()
-		 ; cur != specparams.end() ;  ++ cur ) {
-	    o << "    specparam " << (*cur).first
-	      << " = ";
-	    spec_val_t value = (*cur).second;
-	    switch (value.type) {
-		case IVL_VT_REAL:
-		  o << "R:" << value.real_val;
-		  break;
-		case IVL_VT_BOOL:
-		  o << "I:" << value.integer;
-		  break;
-		default:
-		  o << "<bad type>";
-		  break;
-	    }
-	    o << endl;
-      }
-
      switch (type_) {
 	  case FUNC:
 	    if (func_def())
@@ -1272,18 +1512,23 @@ void NetScope::dump(ostream&o) const
      for (map<hname_t,NetScope*>::const_iterator cur = children_.begin()
 		 ; cur != children_.end() ; ++ cur )
 	    cur->second->dump(o);
+
+      for (map<perm_string,netclass_t*>::const_iterator cur = classes_.begin()
+		 ; cur != classes_.end() ; ++ cur ) {
+	    cur->second->dump_scope(o);
+      }
 }

 void NetSTask::dump(ostream&o, unsigned ind) const
 {
      o << setw(ind) << "" << name_;

-      if (parms_.count() > 0) {
+      if (! parms_.empty()) {
 	    o << "(";
 	    if (parms_[0])
 		  parms_[0]->dump(o);

-	    for (unsigned idx = 1 ;  idx < parms_.count() ;  idx += 1) {
+	    for (unsigned idx = 1 ;  idx < parms_.size() ;  idx += 1) {
 		  o << ", ";
 		  if (parms_[idx])
 			parms_[idx]->dump(o);
@@ -1329,6 +1574,19 @@ void NetEAccess::dump(ostream&o) const
      o << ")";
 }

+void NetEArrayPattern::dump(ostream&fd) const
+{
+      fd << "'{";
+      if (items_.size() >= 1) {
+	    if (items_[0]) fd << *items_[0];
+      }
+      for (size_t idx = 1 ; idx < items_.size() ; idx += 1) {
+	    fd << ", ";
+	    if (items_[idx]) fd << *items_[idx];
+      }
+      fd << "}";
+}
+
 void NetEBinary::dump(ostream&o) const
 {
      if (op_ == 'm' || op_ == 'M') {
@@ -1403,6 +1661,16 @@ void NetEBinary::dump(ostream&o) const
      o << ")";
 }

+void NetECast::dump(ostream&fd) const
+{
+      if (op_=='2')
+	    fd << "bool<" << expr_width() << ">(" << *expr_ << ")";
+      else if (op_=='4')
+	    fd << "logic<" << expr_width() << ">(" << *expr_ << ")";
+      else
+	    NetEUnary::dump(fd);
+}
+
 void NetEConcat::dump(ostream&o) const
 {
      if (repeat_ != 1)
@@ -1413,7 +1681,7 @@ void NetEConcat::dump(ostream&o) const
      else
 	    o << "{";

-      for (unsigned idx = 1 ;  idx < parms_.count() ;  idx += 1) {
+      for (unsigned idx = 1 ;  idx < parms_.size() ;  idx += 1) {
 	    if (parms_[idx])
 		  o << ", " << *parms_[idx];
 	    else
@@ -1461,11 +1729,40 @@ void NetEEvent::dump(ostream&o) const
      o << "<event=" << event_->name() << ">";
 }

+void NetELast::dump(ostream&fd) const
+{
+      fd << "<last of " << sig_->name() << ">";
+}
+
 void NetENetenum::dump(ostream&o) const
 {
      o << "<netenum=" << netenum_ << ">";
 }

+void NetENew::dump(ostream&o) const
+{
+      o << "new <type> [";
+      if (size_) size_->dump(o);
+      o << "]";
+      if (init_val_) {
+	    o << "(";
+	    init_val_->dump(o);
+	    o << ")";
+      }
+}
+
+void NetENull::dump(ostream&o) const
+{
+      o << "<null>";
+}
+
+void NetEProperty::dump(ostream&o) const
+{
+      o << net_->name() << ".<" << pidx_ << ">";
+      if (index_)
+	    o << "[" << *index_ << "]";
+}
+
 void NetEScope::dump(ostream&o) const
 {
      o << "<scope=" << scope_path(scope_) << ">";
@@ -1487,7 +1784,14 @@ void NetESelect::dump(ostream&o) const
      else
 	    o << "(0)";

-      o << "+:" << expr_width() << "]>";
+      o << "+:" << expr_width() << "]";
+      if (ivl_type_t nt = net_type()) {
+	    o << " net_type=(" << *nt << ")";
+      } else {
+	    o << " expr_type=" << expr_type();
+      }
+
+      o << ">";
 }

 void NetESFunc::dump(ostream&o) const
@@ -1500,13 +1804,19 @@ void NetESFunc::dump(ostream&o) const
      o << ")";
 }

+void NetEShallowCopy::dump(ostream&o) const
+{
+      o << "<ShallowCopy, " << *arg1_ << " <-- " << *arg2_ << ">";
+}
+
 void NetESignal::dump(ostream&o) const
 {
      if (has_sign())
 	    o << "+";
      o << name();
      if (word_) o << "[word=" << *word_ << "]";
-      o << "[" << msi()<<":"<<lsi() << "]";
+      vector<netrange_t>tmp = net_->net_type()->slice_dimensions();
+      o << tmp;
 }

 void NetETernary::dump(ostream&o) const
@@ -1517,10 +1827,10 @@ void NetETernary::dump(ostream&o) const

 void NetEUFunc::dump(ostream&o) const
 {
-      o << func_->basename() << "(";
-      if (parms_.count() > 0) {
+      o << scope_path(func_) << "(";
+      if (! parms_.empty()) {
 	    parms_[0]->dump(o);
-	    for (unsigned idx = 1 ;  idx < parms_.count() ;  idx += 1) {
+	    for (unsigned idx = 1 ;  idx < parms_.size() ;  idx += 1) {
 		  o << ", ";
 		  parms_[idx]->dump(o);
 	    }
@@ -1572,10 +1882,30 @@ void NetEUnary::dump(ostream&o) const
 void Design::dump(ostream&o) const
 {
      o << "DESIGN TIME PRECISION: 10e" << get_precision() << endl;
+
+      o << "PACKAGES:" << endl;
+      for (map<perm_string,NetScope*>::const_iterator cur = packages_.begin()
+		 ; cur != packages_.end() ; ++cur) {
+	    cur->second->dump(o);
+      }
+
+      o << "$ROOT CLASSESS:" << endl;
+      for (map<perm_string,netclass_t*>::const_iterator cur = classes_.begin()
+		 ; cur != classes_.end() ; ++cur) {
+	    cur->second->dump_scope(o);
+      }
+
+      o << "$ROOT TASKS/FUNCTIONS:" << endl;
+      for (map<NetScope*,PTaskFunc*>::const_iterator cur = root_tasks_.begin()
+		 ; cur != root_tasks_.end() ; ++ cur) {
+	    cur->first->dump(o);
+      }
+
      o << "SCOPES:" << endl;
      for (list<NetScope*>::const_iterator scope = root_scopes_.begin();
-	   scope != root_scopes_.end(); ++ scope )
+	   scope != root_scopes_.end(); ++ scope ) {
 	    (*scope)->dump(o);
+      }

      o << "ELABORATED NODES:" << endl;

@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "discipline.h"
@@ -1,7 +1,7 @@
-#ifndef __discipline_H
-#define __discipline_H
+#ifndef IVL_discipline_H
+#define IVL_discipline_H
 /*
- * Copyright (c) 2008-2010 Stephen Williams ([email protected])
+ * Copyright (c) 2008-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -74,4 +74,4 @@ extern map<perm_string,ivl_discipline_t> disciplines;
  // Map access function name to the nature that it accesses.
 extern map<perm_string,ivl_nature_t> access_function_nature;

-#endif
+#endif /* IVL_discipline_H */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -12,9 +12,8 @@
 #
 #    You should have received a copy of the GNU Library General Public
 #    License along with this program; if not, write to the Free
-#    Software Foundation, Inc.,
-#    59 Temple Place - Suite 330
-#    Boston, MA 02111-1307, USA
+#    Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#    Boston, MA 02110-1301, USA.
 #
 SHELL = /bin/sh

@@ -37,6 +36,7 @@ mandir = @mandir@
 dllib=@DLLIB@

 CC = @CC@
+WINDRES = @WINDRES@
 INSTALL = @INSTALL@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_DATA = @INSTALL_DATA@
@@ -48,7 +48,7 @@ INCLUDE_PATH = -I. -I.. -I$(srcdir) -I$(srcdir)/..
 endif

 CPPFLAGS = $(INCLUDE_PATH) @CPPFLAGS@ @DEFS@
-CFLAGS = @WARNING_FLAGS@ @CFLAGS@
+CFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CC@ @CFLAGS@
 LDFLAGS = @LDFLAGS@

 O = main.o res.o
@@ -88,7 +88,7 @@ res.rc: $(srcdir)/res.rc.in ../version.exe
 	$(srcdir)/res.rc.in > $@

 res.o: res.rc
-	windres -i res.rc -o res.o
+	$(WINDRES) -i res.rc -o res.o
 #

 install: all installdirs $(bindir)/iverilog-vpi$(suffix)@EXEEXT@
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -12,9 +12,8 @@
 #
 #    You should have received a copy of the GNU Library General Public
 #    License along with this program; if not, write to the Free
-#    Software Foundation, Inc.,
-#    59 Temple Place - Suite 330
-#    Boston, MA 02111-1307, USA
+#    Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#    Boston, MA 02110-1301, USA.
 #
 SHELL = /bin/sh

@@ -50,7 +49,7 @@ INCLUDE_PATH = -I. -I.. -I$(srcdir) -I$(srcdir)/..
 endif

 CPPFLAGS = $(INCLUDE_PATH) @CPPFLAGS@ @DEFS@
-CFLAGS = @WARNING_FLAGS@ @CFLAGS@
+CFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CC@ @CFLAGS@
 LDFLAGS = @LDFLAGS@

 O = main.o substit.o cflexor.o cfparse.o
@@ -68,7 +67,11 @@ distclean: clean
 	rm -f Makefile config.log

 cppcheck: $(O:.o=.c)
-	cppcheck --enable=all -f $(INCLUDE_PATH) $^
+	cppcheck --enable=all -f \
+	         -UYY_USER_INIT \
+	         -UYYPARSE_PARAM -UYYPRINT -Ushort -Uyyoverflow \
+	         -UYYTYPE_INT8 -UYYTYPE_INT16 -UYYTYPE_UINT8 -UYYTYPE_UINT16 \
+	         $(INCLUDE_PATH) $^

 Makefile: $(srcdir)/Makefile.in ../config.status
 	cd ..; ./config.status --file=driver/$@
@@ -79,11 +82,13 @@ dep:
 iverilog@EXEEXT@: $O
 	$(CC) $(LDFLAGS) $O -o iverilog@EXEEXT@ @EXTRALIBS@

-cflexor.c: cflexor.lex
-	$(LEX) -s -ocflexor.c $(srcdir)/cflexor.lex
+cflexor.c: $(srcdir)/cflexor.lex
+	$(LEX) -s -t $< > $@

-cfparse.h cfparse.c: cfparse.y
-	$(YACC) --verbose -t -d -o cfparse.c --name-prefix=cf $(srcdir)/cfparse.y
+# Build this in two steps to avoid parallel build issues (see pr3462585)
+cfparse.c: $(srcdir)/cfparse.y
+	$(YACC) --verbose -t -p cf -d -o $@ $<
+cfparse.h: cfparse.c

 %.o: %.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
@@ -4,7 +4,7 @@

 %{
 /*
- * Copyright (c) 2001-2009 Stephen Williams ([email protected])
+ * Copyright (c) 2001-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -19,7 +19,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "cfparse.h"
@@ -92,6 +92,8 @@ int cmdfile_stack_ptr = 0;

 "+vhdl-libdir+" { BEGIN(PLUS_ARGS); return TOK_VHDL_LIBDIR; }

+"+width-cap+" { BEGIN(PLUS_ARGS); return TOK_WIDTH_CAP; }
+
  /* If it is not any known plus-flag, return the generic form. */
 "+"[^\n \t\b\f\r+]* {
      cflval.text = strdup(yytext);
@@ -195,7 +197,6 @@ int yywrap()
 void switch_to_command_file(const char *file)
 {
      char path[4096];
-      char *cp;

      if (cmdfile_stack_ptr >= MAX_CMDFILE_DEPTH) {
 	    fprintf(stderr, "Error: command files nested too deeply (%d) "
@@ -213,6 +214,7 @@ void switch_to_command_file(const char *file)
         * file name.
         */
      if (file[0] != '/') {
+	    char *cp;
 	    strcpy(path, current_file);
 	    cp = strrchr(path, '/');
 	    if (cp == 0) strcpy(path, file);  /* A base file. */
@@ -245,7 +247,7 @@ void cfreset(FILE*fd, const char*path)
 /*
 * Modern version of flex (>=2.5.9) can clean up the scanner data.
 */
-void destroy_lexor()
+void destroy_lexor(void)
 {
 # ifdef FLEX_SCANNER
 #   if YY_FLEX_MAJOR_VERSION >= 2 && YY_FLEX_MINOR_VERSION >= 5
@@ -1,6 +1,6 @@
 %{
 /*
- * Copyright (c) 2001-2011 Stephen Williams ([email protected])
+ * Copyright (c) 2001-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -15,7 +15,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "globals.h"
@@ -61,6 +61,7 @@ static void translate_file_name(char*text)
 %token TOK_Da TOK_Dc TOK_Dv TOK_Dy
 %token TOK_DEFINE TOK_INCDIR TOK_INTEGER_WIDTH TOK_LIBDIR TOK_LIBDIR_NOCASE
 %token TOK_LIBEXT TOK_PARAMETER TOK_TIMESCALE TOK_VHDL_WORK TOK_VHDL_LIBDIR
+%token TOK_WIDTH_CAP
 %token <text> TOK_PLUSARG TOK_PLUSWORD TOK_STRING

 %%
@@ -191,6 +192,13 @@ item
 		  free(tmp);
 		}

+	| TOK_WIDTH_CAP TOK_PLUSARG
+                { char*tmp = substitutions($2);
+		  free($2);
+		  width_cap = strtoul(tmp,0,10);
+		  free(tmp);
+		}
+
  /* The +<word> tokens that are not otherwise matched, are
     ignored. The skip_args rule arranges for all the argument words
     to be consumed. */
@@ -213,7 +221,7 @@ item
 		}

 	| error
-		{ fprintf(stderr, "Error: unable to parse line %d in "
+		{ fprintf(stderr, "Error: unable to parse line %u in "
 		          "%s.\n", cflloc.first_line, current_file);
 		  return 1;
 		}
@@ -262,5 +270,6 @@ skip_arg : TOK_PLUSARG

 int yyerror(const char*msg)
 {
+	(void)msg; /* Parameter is not used. */
 	return 0;
 }
@@ -1,7 +1,7 @@
-#ifndef __cfparse_misc_H
-#define __cfparse_misc_H
+#ifndef IVL_cfparse_misc_H
+#define IVL_cfparse_misc_H
 /*
- * Copyright (c) 2001-2009 Picture Elements, Inc.
+ * Copyright (c) 2001-2014 Picture Elements, Inc.
 *    Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
@@ -17,7 +17,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -38,7 +38,7 @@ int cflex(void);
 int cferror(const char *);
 int cfparse(void);
 void switch_to_command_file(const char *);
-void destroy_lexor();
+void destroy_lexor(void);
 char *current_file;

-#endif
+#endif /* IVL_cfparse_misc_H */
@@ -1,7 +1,7 @@
-#ifndef __globals_H
-#define __globals_H
+#ifndef IVL_globals_H
+#define IVL_globals_H
 /*
- * Copyright (c) 2000-2009 Stephen Williams ([email protected])
+ * Copyright (c) 2000-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <stddef.h>
@@ -24,6 +24,9 @@
  /* This is the integer-width argument that will be passed to ivl. */
 extern unsigned integer_width;

+  /* This is the width-cap argument that will be passed to ivl. */
+extern unsigned width_cap;
+
 extern const char*vhdlpp_work;
 extern const char**vhdlpp_libdir;
 extern unsigned vhdlpp_libdir_cnt;
@@ -51,4 +54,4 @@ extern void process_parameter(const char*name);
  /* Set the default timescale for the simulator. */
 extern void process_timescale(const char*ts_string);

-#endif
+#endif /* IVL_globals_H */
@@ -1,4 +1,4 @@
-.TH iverilog 1 "February 27th, 2011" "" "Version %M.%m.%n %E"
+.TH iverilog 1 "February 26th, 2014" "" "Version %M.%m.%n %E"
 .SH NAME
 iverilog - Icarus Verilog compiler

@@ -6,7 +6,7 @@ iverilog - Icarus Verilog compiler
 .B iverilog
 [\-ESVv] [\-Bpath] [\-ccmdfile|\-fcmdfile] [\-Dmacro[=defn]]
 [\-Pparameter=value] [\-pflag=value]
-[\-dname] [\-g1995|\-g2001|\-g2005|\-g2005-sv|\-g2009|\-g<feature>]
+[\-dname] [\-g1995|\-g2001|\-g2005|\-g2005-sv|\-g2009|\-g2012|\-g<feature>]
 [\-Iincludedir] [\-mmodule] [\-M[mode=]file] [\-Nfile] [\-ooutputfilename]
 [\-stopmodule] [\-ttype] [\-Tmin/typ/max] [\-Wclass] [\-ypath] sourcefile

@@ -61,10 +61,11 @@ is the Verilog input, but with file inclusions and macro references
 expanded and removed. This is useful, for example, to preprocess
 Verilog source for use by other compilers.
 .TP 8
-.B -g1995\fI|\fP-g2001\fI|\fP-g2001-noconfig\fI|\fP-g2005\fI|\fP-g2005-sv\fI|\fP-g2009
+.B -g1995\fI|\fP-g2001\fI|\fP-g2001-noconfig\fI|\fP-g2005\fI|\fP-g2005-sv\fI|\fP-g2009\fI|\fP-g2012
 Select the Verilog language \fIgeneration\fP to support in the compiler.
 This selects between \fIIEEE1364\-1995\fP, \fIIEEE1364\-2001\fP,
-\fIIEEE1364\-2005\fP, \fIIEEE1800\-2005\fP, or \fIIEEE1800\-2009\fP.
+\fIIEEE1364\-2005\fP, \fIIEEE1800\-2005\fP, \fIIEEE1800\-2009\fP, or
+\fIIEEE1800\-2012\fP.
 Icarus Verilog currently defaults to the \fIIEEE1364\-2005\fP generation
 of the language. This flag is used to restrict the language to a set of
 keywords/features, this allows simulation of older Verilog code that may
@@ -128,7 +129,9 @@ standard compliant behavior (with some loss in performance).
 .B -gstrict-expr-width\fI|\fP-gno-strict-expr-width
 Enable or disable (default) strict compliance with the standard rules
 for determining expression bit lengths. When disabled, the RHS of a
-parameter assignment is evaluated as a lossless expression.
+parameter assignment is evaluated as a lossless expression, as is any
+expression containing an unsized constant number, and unsized constant
+numbers are not truncated to integer width.
 .TP 8
 .B -I\fIincludedir\fP
 Append directory \fIincludedir\fP to list of directories searched
@@ -459,6 +462,12 @@ This allows the programmer to select the width for integer variables
 in the Verilog source. The default is 32, the value can be any desired
 integer value.

+.TP 8
+.B +width-cap+\fIvalue\fP
+This allows the programmer to select the width cap for unsized expressions.
+If the calculated width for an unsized expression exceeds this value, the
+compiler will issue a warning and limit the expression width to this value.
+
 .SH "VARIABLES IN COMMAND FILES"

 In certain cases, iverilog supports variables in command files. These
@@ -512,7 +521,7 @@ Tips on using, debugging, and developing the compiler can be found at

 .SH COPYRIGHT
 .nf
-Copyright \(co  2002\-2011 Stephen Williams
+Copyright \(co  2002\-2014 Stephen Williams

 This document can be freely redistributed according to the terms of the
 GNU General Public License version 2.0
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2011 Stephen Williams ([email protected])
+ * Copyright (c) 2000-2014 Stephen Williams ([email protected])
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -39,7 +39,7 @@ const char NOTICE[] =

 const char HELP[] =
 "Usage: iverilog [-ESvV] [-B base] [-c cmdfile|-f cmdfile]\n"
-"                [-g1995|-g2001|-g2005|-g2005-sv|-g2009] [-g<feature>]\n"
+"                [-g1995|-g2001|-g2005|-g2005-sv|-g2009|-g2012] [-g<feature>]\n"
 "                [-D macro[=defn]] [-I includedir]\n"
 "                [-M [mode=]depfile] [-m module]\n"
 "                [-N file] [-o filename] [-p flag=value]\n"
@@ -71,7 +71,7 @@ const char HELP[] =
 #endif
 #include  <fcntl.h>

-#if HAVE_GETOPT_H
+#ifdef HAVE_GETOPT_H
 #include <getopt.h>
 #endif

@@ -122,6 +122,7 @@ char depmode = 'a';

 const char*generation = "2005";
 const char*gen_specify = "no-specify";
+const char*gen_assertions = "assertions";
 const char*gen_xtypes = "xtypes";
 const char*gen_icarus = "icarus-misc";
 const char*gen_io_range_error = "io-range-error";
@@ -136,10 +137,12 @@ int gen_std_include = 1;
   of the include list. */
 int gen_relative_include = 0;

-char warning_flags[16] = "";
+char warning_flags[16] = "n";

 unsigned integer_width = 32;

+unsigned width_cap = 65536;
+
 char*mod_list = 0;
 char*command_filename = 0;

@@ -185,7 +188,7 @@ static const char** defparm_base = 0;
 static int defparm_size = 0;

 /* Function to add a command file name to the FIFO. */
-void add_cmd_file(const char* filename)
+static void add_cmd_file(const char* filename)
 {
      p_command_file new;

@@ -202,7 +205,7 @@ void add_cmd_file(const char* filename)
 }

 /* Function to return the top command file name from the FIFO. */
-char *get_cmd_file()
+static char *get_cmd_file(void)
 {
      char *filename;

@@ -399,7 +402,7 @@ static int t_preprocess_only(void)
 * needed to run the command from the configuration file (which is
 * already parsed for us) so we can handle must of the generic cases.
 */
-static int t_compile()
+static int t_compile(void)
 {
      unsigned rc;

@@ -491,11 +494,15 @@ static int t_compile()
 static void process_warning_switch(const char*name)
 {
      if (strcmp(name,"all") == 0) {
+	    process_warning_switch("anachronisms");
 	    process_warning_switch("implicit");
 	    process_warning_switch("portbind");
 	    process_warning_switch("select-range");
 	    process_warning_switch("timescale");
 	    process_warning_switch("sensitivity-entire-array");
+      } else if (strcmp(name,"anachronisms") == 0) {
+	    if (! strchr(warning_flags, 'n'))
+		  strcat(warning_flags, "n");
      } else if (strcmp(name,"implicit") == 0) {
 	    if (! strchr(warning_flags, 'i'))
 		  strcat(warning_flags, "i");
@@ -519,6 +526,12 @@ static void process_warning_switch(const char*name)
      } else if (strcmp(name,"sensitivity-entire-array") == 0) {
 	    if (! strchr(warning_flags, 'a'))
 		  strcat(warning_flags, "a");
+      } else if (strcmp(name,"no-anachronisms") == 0) {
+	    char*cp = strchr(warning_flags, 'n');
+	    if (cp) while (*cp) {
+		  cp[0] = cp[1];
+		  cp += 1;
+	    }
      } else if (strcmp(name,"no-implicit") == 0) {
 	    char*cp = strchr(warning_flags, 'i');
 	    if (cp) while (*cp) {
@@ -612,7 +625,7 @@ void process_file_name(const char*name, int lib_flag)
      }
 }

-int process_generation(const char*name)
+static int process_generation(const char*name)
 {
      if (strcmp(name,"1995") == 0)
 	    generation = "1995";
@@ -632,6 +645,9 @@ int process_generation(const char*name)
      else if (strcmp(name,"2009") == 0)
 	    generation = "2009";

+      else if (strcmp(name,"2012") == 0)
+	    generation = "2012";
+
      else if (strcmp(name,"1") == 0) { /* Deprecated: use 1995 */
 	    generation = "1995";
 	    gen_xtypes = "no-xtypes";
@@ -665,6 +681,12 @@ int process_generation(const char*name)
      else if (strcmp(name,"no-specify") == 0)
 	    gen_specify = "no-specify";

+      else if (strcmp(name,"assertions") == 0)
+	    gen_assertions = "assertions";
+
+      else if (strcmp(name,"no-assertions") == 0)
+	    gen_assertions = "no-assertions";
+
      else if (strcmp(name,"std-include") == 0)
 	     gen_std_include = 1;

@@ -710,6 +732,7 @@ int process_generation(const char*name)
 		            "    2005    -- IEEE1364-2005\n"
 		            "    2005-sv -- IEEE1800-2005\n"
 		            "    2009    -- IEEE1800-2009\n"
+		            "    2012    -- IEEE1800-2012\n"
 		            "Other generation flags:\n"
 		            "    specify | no-specify\n"
 		            "    verilog-ams | no-verilog-ams\n"
@@ -727,7 +750,7 @@ int process_generation(const char*name)
      return 0;
 }

-int process_depfile(const char*name)
+static int process_depfile(const char*name)
 {
      const char*cp = strchr(name, '=');
      if (cp) {
@@ -761,7 +784,7 @@ int process_depfile(const char*name)
 /*
 * If it exists add the SFT file for the given module.
 */
-void add_sft_file(const char *module)
+static void add_sft_file(const char *module)
 {
      char *file;

@@ -776,7 +799,7 @@ int main(int argc, char **argv)
 {
      int e_flag = 0;
      int version_flag = 0;
-      int opt, idx;
+      int opt;

 #ifdef __MINGW32__
 	/* Calculate the ivl_root from the path to the command. This
@@ -884,7 +907,7 @@ int main(int argc, char **argv)
 	}
      }

-      while ((opt = getopt(argc, argv, "B:c:D:d:Ef:g:hI:M:m:N::o:P:p:Ss:T:t:vVW:y:Y:")) != EOF) {
+      while ((opt = getopt(argc, argv, "B:c:D:d:Ef:g:hI:M:m:N:o:P:p:Ss:T:t:vVW:y:Y:")) != EOF) {

 	    switch (opt) {
 		case 'B':
@@ -1021,7 +1044,7 @@ int main(int argc, char **argv)

      if (version_flag || verbose_flag) {
 	    printf("Icarus Verilog version " VERSION " (" VERSION_TAG ")\n\n");
-	    printf("Copyright 1998-2011 Stephen Williams\n\n");
+	    printf("Copyright 1998-2013 Stephen Williams\n\n");
 	    puts(NOTICE);
      }

@@ -1047,10 +1070,11 @@ int main(int argc, char **argv)
      fprintf(iconfig_file, "sys_func:%s%csystem.sft\n", base, sep);
      fprintf(iconfig_file, "sys_func:%s%cvhdl_sys.sft\n", base, sep);

-	/* If verilog-2005/9 is enabled or icarus-misc or verilog-ams,
+	/* If verilog-2005/09/12 is enabled or icarus-misc or verilog-ams,
 	 * then include the v2005_math library. */
      if (strcmp(generation, "2005") == 0 ||
          strcmp(generation, "2009") == 0 ||
+          strcmp(generation, "2012") == 0 ||
          strcmp(gen_icarus, "icarus-misc") == 0 ||
          strcmp(gen_verilog_ams, "verilog-ams") == 0) {
 	    fprintf(iconfig_file, "sys_func:%s%cv2005_math.sft\n", base, sep);
@@ -1066,7 +1090,8 @@ int main(int argc, char **argv)
      /* If verilog-2009 (SystemVerilog) is enabled, then include the
         v2009 module. */
      if (strcmp(generation, "2005-sv") == 0 ||
-          strcmp(generation, "2009") == 0) {
+          strcmp(generation, "2009") == 0 ||
+          strcmp(generation, "2012") == 0) {
 	    fprintf(iconfig_file, "sys_func:%s%cv2009.sft\n", base, sep);
 	    fprintf(iconfig_file, "module:v2009\n");
      }
@@ -1074,6 +1099,7 @@ int main(int argc, char **argv)
      if (mtm != 0) fprintf(iconfig_file, "-T:%s\n", mtm);
      fprintf(iconfig_file, "generation:%s\n", generation);
      fprintf(iconfig_file, "generation:%s\n", gen_specify);
+      fprintf(iconfig_file, "generation:%s\n", gen_assertions);
      fprintf(iconfig_file, "generation:%s\n", gen_xtypes);
      fprintf(iconfig_file, "generation:%s\n", gen_io_range_error);
      fprintf(iconfig_file, "generation:%s\n", gen_strict_ca_eval);
@@ -1116,7 +1142,7 @@ int main(int argc, char **argv)
 	    vhdlpp_work = "ivl_vhdl_work";
      fprintf(defines_file, "vhdlpp:%s%cvhdlpp\n", vhdlpp_dir, sep);
      fprintf(defines_file, "vhdlpp-work:%s\n", vhdlpp_work);
-      for (idx = 0 ; idx < vhdlpp_libdir_cnt ; idx += 1)
+      for (unsigned idx = 0 ; idx < vhdlpp_libdir_cnt ; idx += 1)
 	    fprintf(defines_file, "vhdlpp-libdir:%s\n", vhdlpp_libdir[idx]);

    /* Process parameter definition from command line. The last
@@ -1130,7 +1156,7 @@ int main(int argc, char **argv)

 	/* Finally, process all the remaining words on the command
 	   line as file names. */
-      for (idx = optind ;  idx < argc ;  idx += 1)
+      for (int idx = optind ;  idx < argc ;  idx += 1)
 	    process_file_name(argv[idx], 0);

 	/* If the use of a default include directory is not
@@ -1168,6 +1194,8 @@ int main(int argc, char **argv)

      fprintf(iconfig_file, "iwidth:%u\n", integer_width);

+      fprintf(iconfig_file, "widthcap:%u\n", width_cap);
+
 	/* Write the preprocessor command needed to preprocess a
 	   single file. This may be used to preprocess library
 	   files. */
@@ -14,13 +14,14 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <string.h>
 # include  <stdlib.h>
 # include  <stdio.h>
 # include  "ivl_alloc.h"
+# include  "globals.h"


 char* substitutions(const char*str)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1999-2013 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -32,6 +32,17 @@ NetEAccess* NetEAccess::dup_expr() const
      return tmp;
 }

+NetEArrayPattern*NetEArrayPattern::dup_expr() const
+{
+      vector<NetExpr*>tmp (items_.size());
+      for (size_t idx = 0 ; idx < tmp.size() ; idx += 1)
+	    tmp[idx] = items_[idx]->dup_expr();
+
+      NetEArrayPattern*res = new NetEArrayPattern(net_type(), tmp);
+      res->set_line(*this);
+      return res;
+}
+
 NetEBinary* NetEBinary::dup_expr() const
 {
      ivl_assert(*this, 0);
@@ -110,10 +121,10 @@ NetEBShift* NetEBShift::dup_expr() const

 NetEConcat* NetEConcat::dup_expr() const
 {
-      NetEConcat*dup = new NetEConcat(parms_.count(), repeat_);
+      NetEConcat*dup = new NetEConcat(parms_.size(), repeat_, expr_type_);
      ivl_assert(*this, dup);
      dup->set_line(*this);
-      for (unsigned idx = 0 ;  idx < parms_.count() ;  idx += 1)
+      for (unsigned idx = 0 ;  idx < parms_.size() ;  idx += 1)
 	    if (parms_[idx]) {
 		  NetExpr*tmp = parms_[idx]->dup_expr();
                  ivl_assert(*this, tmp);
@@ -171,12 +182,38 @@ NetEEvent* NetEEvent::dup_expr() const
      return 0;
 }

+NetELast* NetELast::dup_expr() const
+{
+      NetELast*tmp = new NetELast(sig_);
+      ivl_assert(*this, tmp);
+      tmp->set_line(*this);
+      return tmp;
+}
+
 NetENetenum* NetENetenum::dup_expr() const
 {
      ivl_assert(*this, 0);
      return 0;
 }

+NetENew* NetENew::dup_expr() const
+{
+      ivl_assert(*this, 0);
+      return 0;
+}
+
+NetENull* NetENull::dup_expr() const
+{
+      ivl_assert(*this, 0);
+      return 0;
+}
+
+NetEProperty* NetEProperty::dup_expr() const
+{
+      ivl_assert(*this, 0);
+      return 0;
+}
+
 NetEScope* NetEScope::dup_expr() const
 {
      ivl_assert(*this, 0);
@@ -189,6 +226,7 @@ NetESelect* NetESelect::dup_expr() const
 			              base_? base_->dup_expr() : 0,
 			              expr_width(), sel_type_);
      ivl_assert(*this, tmp);
+      tmp->cast_signed(has_sign());
      tmp->set_line(*this);
      return tmp;
 }
@@ -208,11 +246,18 @@ NetESFunc* NetESFunc::dup_expr() const
      return tmp;
 }

+NetEShallowCopy* NetEShallowCopy::dup_expr() const
+{
+      ivl_assert(*this, 0);
+      return 0;
+}
+
 NetESignal* NetESignal::dup_expr() const
 {
      NetESignal*tmp = new NetESignal(net_, word_);
      ivl_assert(*this, tmp);
      tmp->expr_width(expr_width());
+      tmp->cast_signed(has_sign());
      tmp->set_line(*this);
      return tmp;
 }
@@ -232,9 +277,9 @@ NetETernary* NetETernary::dup_expr() const
 NetEUFunc* NetEUFunc::dup_expr() const
 {
      NetEUFunc*tmp;
-      svector<NetExpr*> tmp_parms (parms_.count());
+      vector<NetExpr*> tmp_parms (parms_.size());

-      for (unsigned idx = 0 ;  idx < tmp_parms.count() ;  idx += 1) {
+      for (unsigned idx = 0 ;  idx < tmp_parms.size() ;  idx += 1) {
 	    ivl_assert(*this, parms_[idx]);
 	    tmp_parms[idx] = parms_[idx]->dup_expr();
      }
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 1999-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1999-2014 Stephen Williams (steve@icarus.com)
+ * Copyright CERN 2012 / Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +15,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -22,6 +23,8 @@
 # include  "PExpr.h"
 # include  "netlist.h"
 # include  "netmisc.h"
+# include  "netstruct.h"
+# include  "netvector.h"
 # include  "compiler.h"

 # include  <cstdlib>
@@ -96,12 +99,12 @@ NetNet* PEConcat::elaborate_lnet_common_(Design*des, NetScope*scope,
 	   concat operator from most significant to least significant,
 	   which is the order they are given in the concat list. */

+      netvector_t*tmp2_vec = new netvector_t(nets[0]->data_type(),width-1,0);
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, width);
+			       NetNet::IMPLICIT, tmp2_vec);

 	/* Assume that the data types of the nets are all the same, so
 	   we can take the data type of any, the first will do. */
-      osig->data_type(nets[0]->data_type());
      osig->local_flag(true);
      osig->set_line(*this);

@@ -152,8 +155,6 @@ NetNet* PEConcat::elaborate_lnet_common_(Design*des, NetScope*scope,
 	    assert(width == 0);
      }

-      osig->data_type(nets[0]->data_type());
-      osig->local_flag(true);
      return osig;
 }

@@ -199,11 +200,15 @@ bool PEConcat::is_collapsible_net(Design*des, NetScope*scope) const
 bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 				long&midx, long&lidx) const
 {
+      list<long> prefix_indices;
+      bool rc = calculate_packed_indices_(des, scope, sig, prefix_indices);
+      ivl_assert(*this, rc);
+
      const name_component_t&name_tail = path_.back();
 	// Only treat as part/bit selects any index that is beyond the
 	// word selects for an array. This is not an array, then
 	// dimensions==0 and any index is treated as a select.
-      if (name_tail.index.size() <= sig->array_dimensions()) {
+      if (name_tail.index.size() <= sig->unpacked_dimensions()) {
 	    midx = sig->vector_width()-1;
 	    lidx = 0;
 	    return true;
@@ -242,7 +247,7 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 		      if (warn_ob_select) {
 			    cerr << get_fileline() << ": warning: "
 			         << sig->name();
-			    if (sig->array_dimensions() > 0) cerr << "[]";
+			    if (sig->unpacked_dimensions() > 0) cerr << "[]";
 			    cerr << "['bx";
 			    if (index_tail.sel ==
 			        index_component_t::SEL_IDX_UP) {
@@ -250,20 +255,20 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 			    } else {
 				  cerr << "-:";
 			    }
-			    cerr << wid << "] is always outside vector."
+			    cerr << wid << "] is always outside the vector."
 			         << endl;
 		      }
 		      return false;
 		}

 		long midx_val = tmp->value().as_long();
-		midx = sig->sb_to_idx(midx_val);
+		midx = sig->sb_to_idx(prefix_indices, midx_val);
 		delete tmp_ex;

 		if (index_tail.sel == index_component_t::SEL_IDX_UP)
-		      lidx = sig->sb_to_idx(midx_val+wid-1);
+		      lidx = sig->sb_to_idx(prefix_indices, midx_val+wid-1);
 		else
-		      lidx = sig->sb_to_idx(midx_val-wid+1);
+		      lidx = sig->sb_to_idx(prefix_indices, midx_val-wid+1);

 		if (midx < lidx) {
 		      long tmpx = midx;
@@ -274,7 +279,7 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 		  /* Warn about an indexed part select that is out of range. */
 		if (warn_ob_select && (lidx < 0)) {
 		      cerr << get_fileline() << ": warning: " << sig->name();
-		      if (sig->array_dimensions() > 0) cerr << "[]";
+		      if (sig->unpacked_dimensions() > 0) cerr << "[]";
 		      cerr << "[" << midx_val;
 		      if (index_tail.sel == index_component_t::SEL_IDX_UP) {
 			    cerr << "+:";
@@ -285,7 +290,7 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 		}
 		if (warn_ob_select && (midx >= (long)sig->vector_width())) {
 		      cerr << get_fileline() << ": warning: " << sig->name();
-		      if (sig->array_dimensions() > 0) {
+		      if (sig->unpacked_dimensions() > 0) {
 			    cerr << "[]";
 		      }
 		      cerr << "[" << midx_val;
@@ -310,10 +315,21 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 		long msb, lsb;
 		bool part_defined_flag;
 		/* bool flag = */ calculate_parts_(des, scope, msb, lsb, part_defined_flag);
-		ivl_assert(*this, part_defined_flag);

-		long lidx_tmp = sig->sb_to_idx(lsb);
-		long midx_tmp = sig->sb_to_idx(msb);
+		  /* We have an undefined index and that is out of range. */
+		if (!part_defined_flag) {
+		      if (warn_ob_select) {
+			    cerr << get_fileline() << ": warning: "
+			         << sig->name();
+			    if (sig->unpacked_dimensions() > 0) cerr << "[]";
+			    cerr << "['bx] is always outside the vector."
+			         << endl;
+		      }
+		      return false;
+		}
+
+		long lidx_tmp = sig->sb_to_idx(prefix_indices, lsb);
+		long midx_tmp = sig->sb_to_idx(prefix_indices, msb);
 		  /* Detect reversed indices of a part select. */
 		if (lidx_tmp > midx_tmp) {
 		      cerr << get_fileline() << ": error: Part select "
@@ -332,16 +348,11 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 		if (midx_tmp >= (long)sig->vector_width() || lidx_tmp < 0) {
 		      cerr << get_fileline() << ": warning: Part select "
 			   << sig->name();
-		      if (sig->array_dimensions() > 0) {
+		      if (sig->unpacked_dimensions() > 0) {
 			    cerr << "[]";
 		      }
 		      cerr << "[" << msb << ":" << lsb
 			   << "] is out of range." << endl;
-#if 0
-		      midx_tmp = sig->vector_width() - 1;
-		      lidx_tmp = 0;
-		      des->errors += 1;
-#endif
 		}
 		  /* This is completely out side the signal so just skip it. */
 		if (lidx_tmp >= (long)sig->vector_width() || midx_tmp < 0) {
@@ -354,30 +365,43 @@ bool PEIdent::eval_part_select_(Design*des, NetScope*scope, NetNet*sig,
 	  }

 	  case index_component_t::SEL_BIT:
-	    if (name_tail.index.size() > sig->array_dimensions()) {
-		  verinum*mval = index_tail.msb->eval_const(des, scope);
-		  if (mval == 0) {
-			cerr << get_fileline() << ": error: Index of " << path_ <<
-			      " needs to be constant in this context." <<
-			      endl;
-			cerr << get_fileline() << ":      : Index expression is: "
-			     << *index_tail.msb << endl;
-			cerr << get_fileline() << ":      : Context scope is: "
-			     << scope_path(scope) << endl;
-			des->errors += 1;
+	    if (name_tail.index.size() > sig->unpacked_dimensions()) {
+		  long msb;
+		  bool bit_defined_flag;
+		  /* bool flag = */ calculate_bits_(des, scope, msb, bit_defined_flag);
+
+		  /* We have an undefined index and that is out of range. */
+		  if (!bit_defined_flag) {
+			if (warn_ob_select) {
+			      cerr << get_fileline() << ": warning: "
+			           << sig->name();
+			      if (sig->unpacked_dimensions() > 0) cerr << "[]";
+			      cerr << "['bx] is always outside the vector."
+			           << endl;
+			}
 			return false;
 		  }
-		  assert(mval);

-		  midx = sig->sb_to_idx(mval->as_long());
-		  if (midx >= (long)sig->vector_width()) {
-			cerr << get_fileline() << ": error: Index " << sig->name()
-			     << "[" << mval->as_long() << "] is out of range."
-			     << endl;
-			des->errors += 1;
-			midx = 0;
+
+		  if (prefix_indices.size()+2 <= sig->packed_dims().size()) {
+			long tmp_loff;
+			unsigned long tmp_lwid;
+			bool rcl = sig->sb_to_slice(prefix_indices, msb,
+						    tmp_loff, tmp_lwid);
+			ivl_assert(*this, rcl);
+			midx = tmp_loff + tmp_lwid - 1;
+			lidx = tmp_loff;
+		  } else {
+			midx = sig->sb_to_idx(prefix_indices, msb);
+			if (midx >= (long)sig->vector_width()) {
+			      cerr << get_fileline() << ": error: Index " << sig->name()
+				   << "[" << msb << "] is out of range."
+				   << endl;
+			      des->errors += 1;
+			      midx = 0;
+			}
+			lidx = midx;
 		  }
-		  lidx = midx;

 	    } else {
 		  cerr << get_fileline() << ": internal error: "
@@ -405,6 +429,7 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
      NetNet*       sig = 0;
      const NetExpr*par = 0;
      NetEvent*     eve = 0;
+      perm_string method_name;

      symbol_search(this, des, scope, path_, sig, par, eve);

@@ -416,6 +441,35 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
 	    return 0;
      }

+	// Break the path_ into the tail name and the prefix. For
+	// example, a name "a.b.c" is broken into name_tail="c" and
+	// path_prefix="a.b".
+      const name_component_t&path_tail = path_.back();
+      pform_name_t path_prefix = path_;
+      path_prefix.pop_back();
+
+	/* If the signal is not found, check to see if this is a
+	   member of a struct. Take the name of the form "a.b.member",
+	   remove the member and store it into method_name, and retry
+	   the search with "a.b". */
+      if (sig == 0 && path_.size() >= 2) {
+	    if (debug_elaborate) {
+		  cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+			"Symbol not found, try again with path_prefix=" << path_prefix
+		       << " and method_name=" << path_tail.name << endl;
+	    }
+	    method_name = path_tail.name;
+	    symbol_search(this, des, scope, path_prefix, sig, par, eve);
+
+	      // Whoops, not a struct signal, so give up on this avenue.
+	    if (sig && sig->struct_type() == 0) {
+		  cerr << get_fileline() << ": XXXXX: sig=" << sig->name()
+		       << " is found, but not a struct with member " << method_name << endl;
+		  method_name = perm_string();
+		  sig = 0;
+	    }
+      }
+
      if (sig == 0) {
 	    cerr << get_fileline() << ": error: Net " << path_
 		 << " is not defined in this context." << endl;
@@ -430,17 +484,10 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
 	   wire. */
      if (gn_var_can_be_uwire()
 	  && (sig->type() == NetNet::REG)
-	  && (sig->peek_eref() == 0) ) {
+	  && (sig->peek_lref() == 0) ) {
 	    sig->type(NetNet::UNRESOLVED_WIRE);
      }

-      if (sig->type() == NetNet::UNRESOLVED_WIRE && sig->pin(0).is_linked()) {
-	    cerr << get_fileline() << ": error: Unresolved net/uwire "
-	         << sig->name() << " cannot have multiple drivers." << endl;
-	    des->errors += 1;
-	    return 0;
-      }
-
 	/* Don't allow registers as assign l-values. */
      if (sig->type() == NetNet::REG) {
 	    cerr << get_fileline() << ": error: reg " << sig->name()
@@ -454,59 +501,193 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
      unsigned midx = sig->vector_width()-1, lidx = 0;
 	// The default word select is the first.
      long widx = 0;
-	// The widx_val is the word select as entered in the source
-	// code. It's used for error messages.
-      long widx_val = 0;
+	// Set this to true if we calculate the word index. This is
+	// used to distinguish between unpacked array assignment and
+	// array word assignment.
+      bool widx_flag = false;

-      const name_component_t&name_tail = path_.back();
+      list<long> unpacked_indices_const;

-      if (sig->array_dimensions() > 0) {
+      const netstruct_t*struct_type = 0;
+      if ((struct_type = sig->struct_type()) && !method_name.nil()) {

-	    if (name_tail.index.empty()) {
-		  cerr << get_fileline() << ": error: array " << sig->name()
-		       << " must be used with an index." << endl;
+	      // Detect the variable is a structure and there was a
+	      // method name detected. We've already found that
+	      // the path_ is <>.sig.method_name and signal
+	      // (NetNet). We also know that sig is struct_type(), so
+	      // look for a method named method_name.
+	    if (debug_elaborate)
+		  cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+		       << "Signal " << sig->name() << " is a structure, "
+		       << "try to match member " << method_name << endl;
+
+	    unsigned long member_off = 0;
+	    const struct netstruct_t::member_t*member = struct_type->packed_member(method_name, member_off);
+	    ivl_assert(*this, member);
+
+	    if (debug_elaborate) {
+		  cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+		       << "Member " << method_name
+		       << " has type " << *member->net_type << "." << endl;
+		  cerr << get_fileline() << ":                                : "
+		       << "Tail name has " << path_tail.index.size() << " indices." << endl;
+	    }
+
+	      // Rewrite a member select of a packed structure as a
+	      // part select of the base variable.
+	    lidx = member_off;
+	    midx = lidx + member->net_type->packed_width() - 1;
+
+	      // The dimensions of the tail of the prefix must match
+	      // the dimensions of the signal at this point. (The sig
+	      // has a packed dimension for the packed struct size.)
+	      // For example, if the path_=a[<m>][<n>].member, then
+	      // sig must have 3 packed dimensions: one for the struct
+	      // members and two actual packed dimensions.
+	    ivl_assert(*this, path_prefix.back().index.size()+1 == sig->packed_dimensions());
+
+	      // Elaborate an expression from the packed indices and
+	      // the member offset (into the structure) to get a
+	      // canonical expression into the packed signal vector.
+	    NetExpr*packed_base = 0;
+	    if (sig->packed_dimensions() > 1) {
+		  list<index_component_t>tmp_index = path_prefix.back().index;
+		  index_component_t member_select;
+		  member_select.sel = index_component_t::SEL_BIT;
+		  member_select.msb = new PENumber(new verinum(member_off));
+		  tmp_index.push_back(member_select);
+		  packed_base = collapse_array_indices(des, scope, sig, tmp_index);
+
+		  if (debug_elaborate) {
+			cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+			     << "packed_base=" << *packed_base
+			     << ", member_off=" << member_off << endl;
+		  }
+	    }
+
+	    long tmp;
+	    if (packed_base && eval_as_long(tmp, packed_base)) {
+		  lidx = tmp;
+		  midx = lidx + member->net_type->packed_width() - 1;
+		  delete packed_base;
+		  packed_base = 0;
+	    }
+
+	      // Currently, only support const dimensions here.
+	    ivl_assert(*this, packed_base == 0);
+
+	      // Now the lidx/midx values get us to the member. Next
+	      // up, deal with bit/part selects from the member
+	      // itself.
+	      //XXXXivl_assert(*this, member->packed_dims.size() <= 1);
+	    ivl_assert(*this, path_tail.index.size() <= 1);
+	    if (! path_tail.index.empty()) {
+		  long tmp_off;
+		  unsigned long tmp_wid;
+		  const index_component_t&tail_sel = path_tail.index.back();
+		  ivl_assert(*this, tail_sel.sel == index_component_t::SEL_PART || tail_sel.sel == index_component_t::SEL_BIT);
+		  bool rc = calculate_part(this, des, scope, tail_sel, tmp_off, tmp_wid);
+		  ivl_assert(*this, rc);
+		  if (debug_elaborate)
+			cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+			     << "tmp_off=" << tmp_off << ", tmp_wid=" << tmp_wid << endl;
+		  lidx += tmp_off;
+		  midx = lidx + tmp_wid - 1;
+	    }
+
+      } else if (gn_system_verilog() && sig->unpacked_dimensions() > 0 && path_tail.index.empty()) {
+
+	      // In this case, we are doing a continuous assignment to
+	      // an unpacked array. The NetNet representation is a
+	      // NetNet with a pin for each array element, so there is
+	      // nothing more needed here.
+	      //
+	      // This can come up from code like this:
+	      //   logic [...] data [0:3];
+	      //   assign data = ...;
+	      // In this case, "sig" is "data", and sig->pin_count()
+	      // is 4 to account for the unpacked size.
+	    if (debug_elaborate) {
+		  cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+		       << "Net assign to unpacked array \"" << sig->name()
+		       << "\" with " << sig->pin_count() << " elements." << endl;
+	    }
+
+      } else if (sig->unpacked_dimensions() > 0) {
+
+	      // Make sure there are enough indices to address an array element.
+	    if (path_tail.index.size() < sig->unpacked_dimensions()) {
+		  cerr << get_fileline() << ": error: Array " << path()
+		       << " needs " << sig->unpacked_dimensions() << " indices,"
+		       << " but got only " << path_tail.index.size() << ". (net)" << endl;
 		  des->errors += 1;
 		  return 0;
 	    }

-	    const index_component_t&index_head = name_tail.index.front();
-	    if (index_head.sel == index_component_t::SEL_PART) {
-		  cerr << get_fileline() << ": error: cannot perform a part "
-		       << "select on array " << sig->name() << "." << endl;
+	      // Evaluate all the index expressions into an
+	      // "unpacked_indices" array.
+	    list<NetExpr*>unpacked_indices;
+	    indices_flags flags;
+	    indices_to_expressions(des, scope, this,
+				   path_tail.index, sig->unpacked_dimensions(),
+				   true, sig->unpacked_count(),
+				   flags,
+				   unpacked_indices,
+				   unpacked_indices_const);
+
+	    if (flags.invalid) {
+		  return 0;
+
+	    } else if (flags.variable) {
+		  cerr << get_fileline() << ": error: array '" << sig->name()
+		       << "' index must be a constant in this context." << endl;
 		  des->errors += 1;
 		  return 0;
-	    }
-	    ivl_assert(*this, index_head.sel == index_component_t::SEL_BIT);

-	    NetExpr*tmp_ex = elab_and_eval(des, scope, index_head.msb, -1, true);
-	    NetEConst*tmp = dynamic_cast<NetEConst*>(tmp_ex);
-	    if (!tmp) {
-		  cerr << get_fileline() << ": error: array " << sig->name()
-		       << " index must be a constant in this context." << endl;
-		  des->errors += 1;
-		  return 0;
-	    }
-
-	    widx_val = tmp->value().as_long();
-	    if (sig->array_index_is_valid(widx_val))
-		  widx = sig->array_index_to_address(widx_val);
-	    else
+	    } else if (flags.undefined) {
+		  cerr << get_fileline() << ": warning: "
+		       << "ignoring undefined l-value array access "
+		       << sig->name() << as_indices(unpacked_indices)
+		       << "." << endl;
 		  widx = -1;
-	    delete tmp_ex;
+		  widx_flag = true;
+
+	    } else {
+		  NetExpr*canon_index = 0;
+		  ivl_assert(*this, unpacked_indices_const.size() == sig->unpacked_dimensions());
+		  canon_index = normalize_variable_unpacked(sig, unpacked_indices_const);
+
+		  if (canon_index == 0) {
+			cerr << get_fileline() << ": warning: "
+			     << "ignoring out of bounds l-value array access "
+			     << sig->name() << as_indices(unpacked_indices_const)
+			     << "." << endl;
+			widx = -1;
+			widx_flag = true;
+
+		  } else {
+			NetEConst*canon_const = dynamic_cast<NetEConst*>(canon_index);
+			ivl_assert(*this, canon_const);
+
+			widx = canon_const->value().as_long();
+			widx_flag = true;
+			delete canon_index;
+		  }
+	    }

 	    if (debug_elaborate)
 		  cerr << get_fileline() << ": debug: Use [" << widx << "]"
 		       << " to index l-value array." << endl;

 	      /* The array has a part/bit select at the end. */
-	    if (name_tail.index.size() > sig->array_dimensions()) {
+	    if (path_tail.index.size() > sig->unpacked_dimensions()) {
 		  if (sig->get_scalar()) {
 		        cerr << get_fileline() << ": error: "
 		             << "can not select part of ";
 			if (sig->data_type() == IVL_VT_REAL) cerr << "real";
 			else cerr << "scalar";
 			cerr << " array word: " << sig->name()
-			     << "[" << widx_val << "]" << endl;
+			     << as_indices(unpacked_indices_const) << endl;
 		        des->errors += 1;
 		        return 0;
 		  }
@@ -525,7 +706,18 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
 		  midx = midx_tmp;
 		  lidx = lidx_tmp;
 	    }
-      } else if (!name_tail.index.empty()) {
+
+      } else if (!path_tail.index.empty()) {
+	    if (debug_elaborate) {
+		  cerr << get_fileline() << ": PEIdent::elaborate_lnet_common_: "
+		       << "path_tail.index.size()=" << path_tail.index.size()
+		       << endl;
+	    }
+
+	      // There are index expressions on the name, so this is a
+	      // bit/slice select of the name. Calculate a canonical
+	      // part select.
+
 	    if (sig->get_scalar()) {
 		  cerr << get_fileline() << ": error: "
 		       << "can not select part of ";
@@ -553,21 +745,40 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,

      unsigned subnet_wid = midx-lidx+1;

-      if (sig->pin_count() > 1) {
-	    if (widx < 0 || widx >= (long) sig->pin_count()) {
-		  cerr << get_fileline() << ": warning: ignoring out of "
-		          "bounds l-value array access "
-		       << sig->name() << "[" << widx_val << "]." << endl;
-		  return 0;
+	/* Check if the l-value bits are double-driven. */
+      if (sig->type() == NetNet::UNRESOLVED_WIRE && sig->test_and_set_part_driver(midx,lidx, widx_flag? widx : 0)) {
+	    cerr << get_fileline() << ": error: Unresolved net/uwire "
+	         << sig->name() << " cannot have multiple drivers." << endl;
+	    if (debug_elaborate) {
+		  cerr << get_fileline() << ":      : Overlap in "
+		       << "[" << midx << ":" << lidx << "] (canonical)"
+		       << ", widx=" << (widx_flag? widx : 0)
+		       << ", vector width=" << sig->vector_width()
+		       << endl;
 	    }
+	    des->errors += 1;
+	    return 0;
+      }

+      if (sig->pin_count() > 1 && widx_flag) {
+	    if (widx < 0 || widx >= (long) sig->pin_count())
+		  return 0;
+
+	    netvector_t*tmp2_vec = new netvector_t(sig->data_type(),
+						   sig->vector_width()-1,0);
 	    NetNet*tmp = new NetNet(scope, scope->local_symbol(),
-				    sig->type(), sig->vector_width());
+				    sig->type(), tmp2_vec);
 	    tmp->set_line(*this);
 	    tmp->local_flag(true);
-	    tmp->data_type( sig->data_type() );
 	    connect(sig->pin(widx), tmp->pin(0));
 	    sig = tmp;
+
+      } else if (sig->pin_count() > 1) {
+
+	      // If this turns out to be an l-value unpacked array,
+	      // then let the caller handle it. It will probably be
+	      // converted into an array of assignments.
+	    return sig;
      }

 	/* If the desired l-value vector is narrower than the
@@ -589,10 +800,11 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
 		       << " wid=" << subnet_wid <<"]"
 		       << endl;

+	    netvector_t*tmp2_vec = new netvector_t(sig->data_type(),
+						   subnet_wid-1,0);
 	    NetNet*subsig = new NetNet(sig->scope(),
 				       sig->scope()->local_symbol(),
-				       NetNet::WIRE, subnet_wid);
-	    subsig->data_type( sig->data_type() );
+				       NetNet::WIRE, tmp2_vec);
 	    subsig->local_flag(true);
 	    subsig->set_line(*this);

@@ -642,9 +854,9 @@ NetNet* PEIdent::elaborate_bi_net(Design*des, NetScope*scope) const
 * instantiation (PGModule::elaborate_mod_) to get NetNet objects for
 * the port.
 */
-NetNet* PEIdent::elaborate_port(Design*des, NetScope*scope) const
+NetNet* PEIdent::elaborate_subport(Design*des, NetScope*scope) const
 {
-      assert(scope->type() == NetScope::MODULE);
+      ivl_assert(*this, scope->type() == NetScope::MODULE);
      NetNet*sig = des->find_signal(scope, path_);
      if (sig == 0) {
 	    cerr << get_fileline() << ": error: no wire/reg " << path_
@@ -659,6 +871,7 @@ NetNet* PEIdent::elaborate_port(Design*des, NetScope*scope) const
 	  case NetNet::PINPUT:
 	  case NetNet::POUTPUT:
 	  case NetNet::PINOUT:
+	  case NetNet::PREF:
 	    break;

 	      /* If the name matches, but the signal is not a port,
@@ -688,6 +901,33 @@ NetNet* PEIdent::elaborate_port(Design*des, NetScope*scope) const
      long midx;
      long lidx;

+      if (debug_elaborate) {
+	    cerr << get_fileline() << ": PEIdent::elaborate_subport: "
+		 << "path_ = \"" << path_
+		 << "\", unpacked_dimensions=" << sig->unpacked_dimensions()
+		 << ", port_type()=" << sig->port_type() << endl;
+      }
+
+      if (sig->unpacked_dimensions() && !gn_system_verilog()) {
+	    cerr << get_fileline() << ": error: "
+		 << "Ports cannot be unpacked arrays. Try enabling SystemVerilog support." << endl;
+	    des->errors += 1;
+	    return 0;
+      }
+
+	// There cannot be parts to an unpacked array, so process this
+	// simply as an unpacked array.
+      if (sig->unpacked_dimensions()) {
+	    if (debug_elaborate) {
+		  cerr << get_fileline() << ": PEIdent::elaborate_subport: "
+		       << "path_=\"" << path_
+		       << "\" is an unpacked array with " << sig->pin_count()
+		       << " elements." << endl;
+	    }
+	    scope->add_module_port_net(sig);
+	    return sig;
+      }
+
 	/* Evaluate the part/bit select expressions, to get the part
 	   select of the signal that attaches to the port. Also handle
 	   range and direction checking here. */
@@ -698,17 +938,17 @@ NetNet* PEIdent::elaborate_port(Design*des, NetScope*scope) const
 	/* If this is a part select of the entire signal (or no part
 	   select at all) then we're done. */
      if ((lidx == 0) && (midx == (long)sig->vector_width()-1)) {
-	    scope->add_module_port(sig);
+	    scope->add_module_port_net(sig);
 	    return sig;
      }

      unsigned swid = abs(midx - lidx) + 1;
      ivl_assert(*this, swid > 0 && swid < sig->vector_width());

+      netvector_t*tmp2_vec = new netvector_t(sig->data_type(),swid-1,0);
      NetNet*tmp = new NetNet(scope, scope->local_symbol(),
-			      NetNet::WIRE, swid);
+			      NetNet::WIRE, tmp2_vec);
      tmp->port_type(sig->port_type());
-      tmp->data_type(sig->data_type());
      tmp->set_line(*this);
      tmp->local_flag(true);
      NetNode*ps = 0;
@@ -726,6 +966,9 @@ NetNet* PEIdent::elaborate_port(Design*des, NetScope*scope) const
 	    sig = tmp;
 	    break;

+	  case NetNet::PREF:
+	      // For the purposes of module ports, treat ref ports
+	      // just like inout ports.
 	  case NetNet::PINOUT:
 	    ps = new NetTran(scope, scope->local_symbol(), sig->vector_width(),
 			     swid, lidx);
@@ -742,7 +985,21 @@ NetNet* PEIdent::elaborate_port(Design*des, NetScope*scope) const
      ps->set_line(*this);
      des->add_node(ps);

-      scope->add_module_port(sig);
+      scope->add_module_port_net(sig);
+      return sig;
+}
+
+NetNet*PEIdent::elaborate_unpacked_net(Design*des, NetScope*scope) const
+{
+      NetNet*       sig = 0;
+      const NetExpr*par = 0;
+      NetEvent*     eve = 0;
+      perm_string method_name;
+
+      symbol_search(this, des, scope, path_, sig, par, eve);
+
+      ivl_assert(*this, sig);
+
      return sig;
 }

@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 2000-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2000-2014 Stephen Williams (steve@icarus.com)
+ * Copyright CERN 2013 / Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +15,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "config.h"
@@ -33,16 +34,21 @@
 */

 # include  "Module.h"
-# include  "PEvent.h"
+# include  "PClass.h"
 # include  "PExpr.h"
+# include  "PEvent.h"
+# include  "PClass.h"
 # include  "PGate.h"
 # include  "PGenerate.h"
+# include  "PPackage.h"
 # include  "PTask.h"
 # include  "PWire.h"
 # include  "Statement.h"
 # include  "AStatement.h"
 # include  "netlist.h"
+# include  "netclass.h"
 # include  "netenum.h"
+# include  "parse_api.h"
 # include  "util.h"
 # include  <typeinfo>
 # include  <cassert>
@@ -51,7 +57,9 @@
 typedef map<perm_string,LexicalScope::param_expr_t>::const_iterator mparm_it_t;

 static void collect_parm_item_(Design*des, NetScope*scope, perm_string name,
-			       const LexicalScope::param_expr_t&cur)
+			       const LexicalScope::param_expr_t&cur,
+                               bool is_annotatable,
+                               bool local_flag)
 {
      NetScope::range_t*range_list = 0;
      for (LexicalScope::range_t*range = cur.range ; range ; range = range->next) {
@@ -87,8 +95,9 @@ static void collect_parm_item_(Design*des, NetScope*scope, perm_string name,
 	    range_list = tmp;
      }

-      scope->set_parameter(name, cur.expr, cur.type, cur.msb, cur.lsb,
-			   cur.signed_flag, range_list, cur);
+
+      scope->set_parameter(name, is_annotatable, cur.expr, cur.type, cur.msb,
+			   cur.lsb, cur.signed_flag, local_flag, range_list, cur);
 }

 static void collect_scope_parameters_(Design*des, NetScope*scope,
@@ -106,7 +115,7 @@ static void collect_scope_parameters_(Design*des, NetScope*scope,
 		  des->errors += 1;
 	    }

-	    collect_parm_item_(des, scope, (*cur).first, (*cur).second);
+	    collect_parm_item_(des, scope, (*cur).first, (*cur).second, false, false);
      }
 }

@@ -125,17 +134,41 @@ static void collect_scope_localparams_(Design*des, NetScope*scope,
 		  des->errors += 1;
 	    }

-	    collect_parm_item_(des, scope, (*cur).first, (*cur).second);
+	    collect_parm_item_(des, scope, (*cur).first, (*cur).second, false, true);
      }
 }

+static void collect_scope_specparams_(Design*des, NetScope*scope,
+      const map<perm_string,LexicalScope::param_expr_t>&specparams)
+{
+      for (mparm_it_t cur = specparams.begin()
+		 ; cur != specparams.end() ;  ++ cur ) {
+
+	      // A specparam can not have the same name as a genvar.
+	    if (scope->find_genvar((*cur).first)) {
+		  cerr << cur->second.get_fileline()
+		       << ": error: specparam and genvar in '"
+		       << scope->fullname() << "' have the same name '"
+		       << (*cur).first << "'." << endl;
+		  des->errors += 1;
+	    }
+
+	    collect_parm_item_(des, scope, (*cur).first, (*cur).second, true, false);
+      }
+}
+
+/*
+ * Elaborate the enumeration into the given scope. If scope==0, then
+ * the enumeration goes into $root instead of a scope.
+ */
 static void elaborate_scope_enumeration(Design*des, NetScope*scope,
 					enum_type_t*enum_type)
 {
      bool rc_flag;
-      assert(enum_type->range->size() == 2);
-      NetExpr*msb_ex = elab_and_eval(des, scope, enum_type->range->front(), -1);
-      NetExpr*lsb_ex = elab_and_eval(des, scope, enum_type->range->back(),  -1);
+      assert(enum_type->range->size() == 1);
+      pform_range_t&range = enum_type->range->front();
+      NetExpr*msb_ex = elab_and_eval(des, scope, range.first, -1);
+      NetExpr*lsb_ex = elab_and_eval(des, scope, range.second, -1);

      long msb = 0;
      rc_flag = eval_as_long(msb, msb_ex);
@@ -144,34 +177,44 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,
      rc_flag = eval_as_long(lsb, lsb_ex);
      assert(rc_flag);

-      netenum_t*use_enum = new netenum_t(enum_type->base_type, enum_type->signed_flag,
-					 msb, lsb, enum_type->names->size());
+      netenum_t*use_enum = new netenum_t(enum_type->base_type,
+					 enum_type->signed_flag,
+					 enum_type->integer_flag, msb, lsb,
+					 enum_type->names->size(),
+					 enum_type);

      use_enum->set_line(enum_type->li);
-      scope->add_enumeration_set(use_enum);
+      if (scope)
+	    scope->add_enumeration_set(enum_type, use_enum);
+      else
+	    des->add_enumeration_set(enum_type, use_enum);

-      verinum cur_value (0);
-      verinum one_value (1);
      size_t name_idx = 0;
-	// Find the minimum and maximum allowed enumeration values.
+	// Find the enumeration width.
+      long raw_width = use_enum->packed_width();
+      assert(raw_width > 0);
+      unsigned enum_width = (unsigned)raw_width;
+	// Define the default start value and the increment value to be the
+	// correct type for this enumeration.
+      verinum cur_value ((uint64_t)0, enum_width);
+      cur_value.has_sign(enum_type->signed_flag);
+      verinum one_value ((uint64_t)1, enum_width);
+      one_value.has_sign(enum_type->signed_flag);
+	// Find the maximum allowed enumeration value.
      verinum min_value (0);
      verinum max_value (0);
      if (enum_type->signed_flag) {
-	    min_value = v_not((pow(verinum(2),
-	                           verinum(use_enum->base_width()-1)))) +
-	                one_value;
-	    max_value = pow(verinum(2), verinum(use_enum->base_width()-1)) -
-	                one_value;
+	    min_value = -pow(verinum(2), verinum(enum_width-1));
+	    max_value = pow(verinum(2), verinum(enum_width-1)) - one_value;
      } else {
-	    max_value = pow(verinum(2), verinum(use_enum->base_width())) -
-	                one_value;
+	    max_value = pow(verinum(2), verinum(enum_width)) - one_value;
      }
      min_value.has_sign(true);
      max_value.has_sign(enum_type->signed_flag);
+	// Process the enumeration definition.
      for (list<named_pexpr_t>::const_iterator cur = enum_type->names->begin()
 		 ; cur != enum_type->names->end() ;  ++ cur, name_idx += 1) {
-
-
+	      // Check to see if the enumeration name has a value given.
 	    if (cur->parm) {
 		    // There is an explicit value. elaborate/evaluate
 		    // the value and assign it to the enumeration name.
@@ -179,37 +222,140 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,
 		  NetEConst*val_const = dynamic_cast<NetEConst*> (val);
 		  if (val_const == 0) {
 			cerr << use_enum->get_fileline()
-			     << ": error: Enumeration expression is not "
-			        "constant." << endl;
+			     << ": error: Enumeration expression for "
+			     << cur->name <<" is not an integer constant."
+			     << endl;
 			des->errors += 1;
 			continue;
 		  }
 		  cur_value = val_const->value();

+		    // A 2-state value can not have a constant with X/Z bits.
 		  if (enum_type->base_type==IVL_VT_BOOL &&
 		      ! cur_value.is_defined()) {
 			cerr << use_enum->get_fileline()
 			     << ": error: Enumeration name " << cur->name
-			     << " cannot have an undefined value." << endl;
+			     << " can not have an undefined value." << endl;
 			des->errors += 1;
-			continue;
 		  }
+		    // If this is a literal constant and it has a defined
+		    // width then the width must match the enumeration width.
+		  if (PENumber *tmp = dynamic_cast<PENumber*>(cur->parm)) {
+			if (tmp->value().has_len() &&
+			    (tmp->value().len() != enum_width)) {
+			      cerr << use_enum->get_fileline()
+			           << ": error: Enumeration name " << cur->name
+			           << " has an incorrectly sized constant."
+			           << endl;
+			      des->errors += 1;
+			}
+		  }
+
+		    // If we are padding/truncating a negative value for an
+		    // unsigned enumeration that is an error or if the new
+		    // value does not have a defined width.
+		  if (((cur_value.len() != enum_width) ||
+		       ! cur_value.has_len()) &&
+		      ! enum_type->signed_flag && cur_value.is_negative()) {
+			cerr << use_enum->get_fileline()
+			     << ": error: Enumeration name " << cur->name
+			     << " has a negative value." << endl;
+			des->errors += 1;
+		  }
+
+		    // Narrower values need to be padded to the width of the
+		    // enumeration and defined to have the specified width.
+		  if (cur_value.len() < enum_width) {
+			cur_value = pad_to_width(cur_value, enum_width);
+		  }
+
+		    // Some wider values can be truncated.
+		  if (cur_value.len() > enum_width) {
+			unsigned check_width = enum_width - 1;
+			  // Check that the upper bits match the MSB
+			for (unsigned idx = enum_width;
+			     idx < cur_value.len();
+			     idx += 1) {
+			      if (cur_value[idx] != cur_value[check_width]) {
+				      // If this is an unsigned enumeration
+				      // then zero padding is okay.
+				    if (! enum_type->signed_flag &&
+				        (idx == enum_width) &&
+				        (cur_value[idx] == verinum::V0)) {
+					  check_width += 1;
+					  continue;
+				    }
+				    if (cur_value.is_defined()) {
+					  cerr << use_enum->get_fileline()
+					       << ": error: Enumeration name "
+					       << cur->name
+					       << " has a value that is too "
+					       << ((cur_value > max_value) ?
+					           "large" : "small")
+					       << " " << cur_value << "."
+					       << endl;
+				    } else {
+					  cerr << use_enum->get_fileline()
+					       << ": error: Enumeration name "
+					       << cur->name
+					       << " has trimmed bits that do "
+					       << "not match the enumeration "
+					       << "MSB: " << cur_value << "."
+					       << endl;
+				    }
+				    des->errors += 1;
+				    break;
+			      }
+			}
+			  // If this is an unsigned value then make sure
+			  // The upper bits are not 1.
+			if (! cur_value.has_sign() &&
+			    (cur_value[enum_width] == verinum::V1)) {
+			      cerr << use_enum->get_fileline()
+			           << ": error: Enumeration name "
+			           << cur->name
+			           << " has a value that is too large: "
+			           << cur_value << "." << endl;
+			      des->errors += 1;
+			      break;
+			}
+			cur_value = verinum(cur_value, enum_width);
+		  }
+
+		    // At this point the value has the correct size and needs
+		    // to have the correct sign attribute set.
+		  cur_value.has_len(true);
+		  cur_value.has_sign(enum_type->signed_flag);

 	    } else if (! cur_value.is_defined()) {
 		  cerr << use_enum->get_fileline()
 		       << ": error: Enumeration name " << cur->name
-		       << " cannot have an undefined inferred value." << endl;
+		       << " has an undefined inferred value." << endl;
 		  des->errors += 1;
 		  continue;
 	    }

+	      // Cast any undefined bits to zero so the comparisons below
+	      // return just true (1) or false (0).
+	    verinum two_state_value = cur_value;
+	    two_state_value.cast_to_int2();
+
 	      // The enumeration value must fit into the enumeration bits.
-	    if ((cur_value > max_value) ||
-                (cur_value.has_sign() && (cur_value < min_value))) {
+	    if (!cur_value.is_defined()) {
+		  if (cur_value.len() > (unsigned long)use_enum->packed_width()) {
+			cerr << use_enum->get_fileline()
+			     << ": error: Enumeration name " << cur->name
+			     << " value=" << cur_value
+			     << " is too wide for enumeration base type." << endl;
+			des->errors += 1;
+		  }
+
+	    } else if ((two_state_value > max_value) ||
+                (cur_value.has_sign() && (two_state_value < min_value))) {
+
 		  cerr << use_enum->get_fileline()
 		       << ": error: Enumeration name " << cur->name
-		       << " cannot have a value equal to " << cur_value
-		       << "." << endl;
+		       << " has an inferred value that overflowed." << endl;
 		  des->errors += 1;
 	    }

@@ -223,23 +369,12 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,
 		  des->errors += 1;
 	    }

-	      // The values are explicitly sized to the width of the
-	      // base type of the enumeration.
-	    verinum tmp_val (0);
-	    if (cur_value.len() < use_enum->base_width()) {
-		    // Pad the current value if it is narrower than the final
-		    // width of the enum.
-		  tmp_val = pad_to_width (cur_value, use_enum->base_width());
-		  tmp_val.has_len(true);
-	    } else {
-		    // Truncate an oversized value. We report out of bound
-		    // values above. This may create duplicates.
-		  tmp_val = verinum(cur_value, use_enum->base_width());
-	    }
-	    tmp_val.has_sign(enum_type->signed_flag);
+	    rc_flag = use_enum->insert_name(name_idx, cur->name, cur_value);
+	    if (scope)
+		  rc_flag &= scope->add_enumeration_name(use_enum, cur->name);
+	    else
+		  rc_flag &= des->add_enumeration_name(use_enum, cur->name);

-	    rc_flag = use_enum->insert_name(name_idx, cur->name, tmp_val);
-	    rc_flag &= scope->add_enumeration_name(use_enum, cur->name);
 	    if (! rc_flag) {
 		  cerr << use_enum->get_fileline()
 		       << ": error: Duplicate enumeration name "
@@ -249,17 +384,238 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,

 	      // In case the next name has an implicit value,
 	      // increment the current value by one.
-	    if (cur_value.is_defined())
+	    if (cur_value.is_defined()) {
 		  cur_value = cur_value + one_value;
+	    }
      }
+
+      use_enum->insert_name_close();
 }

 static void elaborate_scope_enumerations(Design*des, NetScope*scope,
-					 const list<enum_type_t*>&enum_types)
+					 const set<enum_type_t*>&enum_types)
 {
-      for (list<enum_type_t*>::const_iterator cur = enum_types.begin()
+      for (set<enum_type_t*>::const_iterator cur = enum_types.begin()
 		 ; cur != enum_types.end() ; ++ cur) {
-	    elaborate_scope_enumeration(des, scope, *cur);
+	    enum_type_t*curp = *cur;
+	    elaborate_scope_enumeration(des, scope, curp);
+      }
+}
+
+void elaborate_rootscope_enumerations(Design*des)
+{
+      for (set<enum_type_t*>::const_iterator cur = pform_enum_sets.begin()
+		 ; cur != pform_enum_sets.end() ; ++ cur) {
+	    enum_type_t*curp = *cur;
+	    elaborate_scope_enumeration(des, 0, curp);
+      }
+}
+
+/*
+ * If the pclass includes an implicit and explicit constructor, then
+ * merge the implicit constructor into the explicit constructor as
+ * statements in the beginning.
+ *
+ * This is not necessary for proper functionality, it is an
+ * optimization, so we can easily give up if it doesn't seem like it
+ * will obviously work.
+ */
+static void blend_class_constructors(PClass*pclass)
+{
+      perm_string new1 = perm_string::literal("new");
+      perm_string new2 = perm_string::literal("new@");
+
+      PFunction*use_new;
+      PFunction*use_new2;
+
+	// Locate the explicit constructor.
+      map<perm_string,PFunction*>::iterator iter_new = pclass->funcs.find(new1);
+      if (iter_new == pclass->funcs.end())
+	    use_new = 0;
+      else
+	    use_new = iter_new->second;
+
+	// Locate the implicit constructor.
+      map<perm_string,PFunction*>::iterator iter_new2 = pclass->funcs.find(new2);
+      if (iter_new2 == pclass->funcs.end())
+	    use_new2 = 0;
+      else
+	    use_new2 = iter_new2->second;
+
+	// If there are no constructors, then we are done.
+      if (use_new==0 && use_new2==0)
+	    return;
+
+	// While we're here, look for a super.new() call. If we find
+	// it, strip it out of the constructor and set it aside for
+	// when we actually call the chained constructor.
+      PChainConstructor*chain_new = use_new? use_new->extract_chain_constructor() : 0;
+
+	// If we do not have an explicit constructor chain, but there
+	// is a parent class, then create an implicit chain.
+      if (chain_new==0 && pclass->type->base_type!=0) {
+	    chain_new = new PChainConstructor(pclass->type->base_args);
+	    chain_new->set_line(*pclass);
+      }
+
+	// If there are both an implicit and explicit constructor,
+	// then blend the implicit constructor into the explicit
+	// constructor. This eases the task for the elaborator later.
+      if (use_new && use_new2) {
+	      // These constructors must be methods of the same class.
+	    ivl_assert(*use_new, use_new->method_of() == use_new2->method_of());
+
+	    Statement*def_new = use_new->get_statement();
+	    Statement*def_new2 = use_new2->get_statement();
+
+	      // It is possible, i.e. recovering from a parse error,
+	      // for the statement from the constructor to be
+	      // missing. In that case, create an empty one.
+	    if (def_new==0) {
+		  def_new = new PBlock(PBlock::BL_SEQ);
+		  use_new->set_statement(def_new);
+	    }
+
+	    if (def_new2) use_new->push_statement_front(def_new2);
+
+	      // Now the implicit initializations are all built into
+	      // the constructor. Delete the "new@" constructor.
+	    pclass->funcs.erase(iter_new2);
+	    delete use_new2;
+	    use_new2 = 0;
+      }
+
+      if (chain_new) {
+	    if (use_new2) {
+		  use_new2->push_statement_front(chain_new);
+	    } else {
+		  use_new->push_statement_front(chain_new);
+	    }
+	    chain_new = 0;
+      }
+}
+
+static void elaborate_scope_class(Design*des, NetScope*scope, PClass*pclass)
+{
+      class_type_t*use_type = pclass->type;
+
+      if (debug_scopes) {
+	    cerr << pclass->get_fileline() <<": elaborate_scope_class: "
+		 << "Elaborate scope class " << pclass->pscope_name() << endl;
+      }
+
+      class_type_t*base_class = dynamic_cast<class_type_t*> (use_type->base_type);
+      if (use_type->base_type && !base_class) {
+	    cerr << pclass->get_fileline() << ": error: "
+		 << "Base type of " << use_type->name
+		 << " is not a class." << endl;
+	    des->errors += 1;
+      }
+
+      netclass_t*use_base_class = 0;
+      if (base_class) {
+	    ivl_assert(*pclass, scope);
+	    use_base_class = scope->find_class(base_class->name);
+	    if (use_base_class == 0) {
+		  cerr << pclass->get_fileline() << ": error: "
+		       << "Base class " << base_class->name
+		       << " not found." << endl;
+		  des->errors += 1;
+	    }
+      }
+
+      netclass_t*use_class = new netclass_t(use_type->name, use_base_class);
+
+      ivl_assert(*pclass, use_type->save_elaborated_type == 0);
+      use_type->save_elaborated_type = use_class;
+
+	// Class scopes have no parent scope, because references are
+	// not allowed to escape a class method.
+      NetScope*class_scope = new NetScope(0, hname_t(pclass->pscope_name()),
+					  NetScope::CLASS);
+      class_scope->set_line(pclass);
+      class_scope->set_class_def(use_class);
+      use_class->set_class_scope(class_scope);
+      use_class->set_definition_scope(scope);
+
+	// Collect the properties, elaborate them, and add them to the
+	// elaborated class definition.
+      for (map<perm_string, class_type_t::prop_info_t>::iterator cur = use_type->properties.begin()
+		 ; cur != use_type->properties.end() ; ++ cur) {
+
+	    ivl_type_s*tmp = cur->second.type->elaborate_type(des, scope);
+	    ivl_assert(*pclass, tmp);
+	    if (debug_scopes) {
+		  cerr << pclass->get_fileline() << ": elaborate_scope_class: "
+		       << "  Property " << cur->first
+		       << " type=" << *tmp << endl;
+	    }
+	    use_class->set_property(cur->first, cur->second.qual, tmp);
+
+      }
+
+      for (map<perm_string,PTask*>::iterator cur = pclass->tasks.begin()
+		 ; cur != pclass->tasks.end() ; ++cur) {
+
+	    hname_t use_name (cur->first);
+	    NetScope*method_scope = new NetScope(class_scope, use_name, NetScope::TASK);
+	      // Task methods are always automatic...
+	    method_scope->is_auto(true);
+	    method_scope->set_line(cur->second);
+
+	    if (debug_scopes) {
+		  cerr << cur->second->get_fileline() << ": elaborate_scope_class: "
+		       << "Elaborate method (task) scope "
+		       << scope_path(method_scope) << endl;
+	    }
+
+	    cur->second->elaborate_scope(des, method_scope);
+      }
+
+      for (map<perm_string,PFunction*>::iterator cur = pclass->funcs.begin()
+		 ; cur != pclass->funcs.end() ; ++cur) {
+
+	    hname_t use_name (cur->first);
+	    NetScope*method_scope = new NetScope(class_scope, use_name, NetScope::FUNC);
+	      // Function methods are always automatic...
+	    method_scope->is_auto(true);
+	    method_scope->set_line(cur->second);
+
+	    if (debug_scopes) {
+		  cerr << cur->second->get_fileline() << ": elaborate_scope_class: "
+		       << "Elaborate method (function) scope "
+		       << scope_path(method_scope) << endl;
+	    }
+
+	    cur->second->elaborate_scope(des, method_scope);
+      }
+
+      if (scope) {
+	    scope->add_class(use_class);
+
+      } else {
+	    des->add_class(use_class, pclass);
+      }
+}
+
+static void elaborate_scope_classes(Design*des, NetScope*scope,
+				    const vector<PClass*>&classes)
+{
+      for (size_t idx = 0 ; idx < classes.size() ; idx += 1) {
+	    blend_class_constructors(classes[idx]);
+	    elaborate_scope_class(des, scope, classes[idx]);
+      }
+}
+
+void elaborate_rootscope_classes(Design*des)
+{
+      if (pform_classes.empty())
+	    return;
+
+      for (map<perm_string,PClass*>::iterator cur = pform_classes.begin()
+		 ; cur != pform_classes.end() ; ++ cur) {
+	    blend_class_constructors(cur->second);
+	    elaborate_scope_class(des, 0, cur->second);
      }
 }

@@ -304,6 +660,25 @@ static void elaborate_scope_events_(Design*des, NetScope*scope,
      }
 }

+static void elaborate_scope_task(Design*des, NetScope*scope, PTask*task)
+{
+      hname_t use_name( task->pscope_name() );
+
+      NetScope*task_scope = new NetScope(scope, use_name, NetScope::TASK);
+      task_scope->is_auto(task->is_auto());
+      task_scope->set_line(task);
+
+      if (scope==0)
+	    des->add_root_task(task_scope, task);
+
+      if (debug_scopes) {
+	    cerr << task->get_fileline() << ": elaborate_scope_task: "
+		 << "Elaborate task scope " << scope_path(task_scope) << endl;
+      }
+
+      task->elaborate_scope(des, task_scope);
+}
+
 static void elaborate_scope_tasks(Design*des, NetScope*scope,
 				  const map<perm_string,PTask*>&tasks)
 {
@@ -345,19 +720,30 @@ static void elaborate_scope_tasks(Design*des, NetScope*scope,
 		  des->errors += 1;
 	    }

-	    NetScope*task_scope = new NetScope(scope, use_name,
-					       NetScope::TASK);
-	    task_scope->is_auto((*cur).second->is_auto());
-	    task_scope->set_line((*cur).second);
-
-	    if (debug_scopes)
-		  cerr << cur->second->get_fileline() << ": debug: "
-		       << "Elaborate task scope " << scope_path(task_scope) << endl;
-	    (*cur).second->elaborate_scope(des, task_scope);
+	    elaborate_scope_task(des, scope, cur->second);
      }

 }

+static void elaborate_scope_func(Design*des, NetScope*scope, PFunction*task)
+{
+      hname_t use_name( task->pscope_name() );
+
+      NetScope*task_scope = new NetScope(scope, use_name, NetScope::FUNC);
+      task_scope->is_auto(task->is_auto());
+      task_scope->set_line(task);
+
+      if (scope==0)
+	    des->add_root_task(task_scope, task);
+
+      if (debug_scopes) {
+	    cerr << task->get_fileline() << ": elaborate_scope_func: "
+		 << "Elaborate task scope " << scope_path(task_scope) << endl;
+      }
+
+      task->elaborate_scope(des, task_scope);
+}
+
 static void elaborate_scope_funcs(Design*des, NetScope*scope,
 				  const map<perm_string,PFunction*>&funcs)
 {
@@ -400,19 +786,33 @@ static void elaborate_scope_funcs(Design*des, NetScope*scope,
 		  des->errors += 1;
 	    }

-	    NetScope*func_scope = new NetScope(scope, use_name,
-					       NetScope::FUNC);
-	    func_scope->is_auto((*cur).second->is_auto());
-	    func_scope->set_line((*cur).second);
-
-	    if (debug_scopes)
-		  cerr << cur->second->get_fileline() << ": debug: "
-		       << "Elaborate function scope " << scope_path(func_scope) << endl;
-	    (*cur).second->elaborate_scope(des, func_scope);
+	    elaborate_scope_func(des, scope, cur->second);
      }

 }

+void elaborate_rootscope_tasks(Design*des)
+{
+      for (map<perm_string,PTaskFunc*>::iterator cur = pform_tasks.begin()
+		 ; cur != pform_tasks.end() ; ++ cur) {
+
+	    if (PTask*task = dynamic_cast<PTask*> (cur->second)) {
+		  elaborate_scope_task(des, 0, task);
+		  continue;
+	    }
+
+	    if (PFunction*func = dynamic_cast<PFunction*>(cur->second)) {
+		  elaborate_scope_func(des, 0, func);
+		  continue;
+	    }
+
+	    cerr << cur->second->get_fileline() << ": internal error: "
+		 << "elabortae_rootscope_tasks does not understand "
+		 << "this object," << endl;
+	    des->errors += 1;
+      }
+}
+
 class generate_schemes_work_item_t : public elaborator_work_item_t {
    public:
      generate_schemes_work_item_t(Design*des__, NetScope*scope, Module*mod)
@@ -445,12 +845,28 @@ class generate_schemes_work_item_t : public elaborator_work_item_t {
      Module*mod_;
 };

+bool PPackage::elaborate_scope(Design*des, NetScope*scope)
+{
+      if (debug_scopes) {
+	    cerr << get_fileline() << ": PPackage::elaborate_scope: "
+		 << "Elaborate package " << scope_path(scope) << "." << endl;
+      }
+
+      collect_scope_parameters_(des, scope, parameters);
+      collect_scope_localparams_(des, scope, localparams);
+      elaborate_scope_enumerations(des, scope, enum_sets);
+      elaborate_scope_classes(des, scope, classes_lexical);
+      elaborate_scope_funcs(des, scope, funcs);
+      elaborate_scope_tasks(des, scope, tasks);
+      return true;
+}
+
 bool Module::elaborate_scope(Design*des, NetScope*scope,
 			     const replace_t&replacements)
 {
      if (debug_scopes) {
-	    cerr << get_fileline() << ": debug: Elaborate scope "
-		 << scope_path(scope) << "." << endl;
+	    cerr << get_fileline() << ": Module::elaborate_scope: "
+		 << "Elaborate " << scope_path(scope) << "." << endl;
      }

 	// Add the genvars to the scope.
@@ -468,6 +884,8 @@ bool Module::elaborate_scope(Design*des, NetScope*scope,

      collect_scope_localparams_(des, scope, localparams);

+      collect_scope_specparams_(des, scope, specparams);
+
 	// Run parameter replacements that were collected from the
 	// containing scope and meant for me.

@@ -475,6 +893,9 @@ bool Module::elaborate_scope(Design*des, NetScope*scope,

      elaborate_scope_enumerations(des, scope, enum_sets);

+      assert(classes.size() == classes_lexical.size());
+      elaborate_scope_classes(des, scope, classes_lexical);
+
 	// Run through the defparams for this module and save the result
 	// in a table for later final override.

@@ -495,7 +916,7 @@ bool Module::elaborate_scope(Design*des, NetScope*scope,
      delete[]attr;

 	// Generate schemes need to have their scopes elaborated, but
-	// we cannot do that until defparams are run, so push it off
+	// we can not do that until defparams are run, so push it off
 	// into an elaborate work item.
      if (debug_scopes)
 	    cerr << get_fileline() << ": debug: "
@@ -518,6 +939,19 @@ bool Module::elaborate_scope(Design*des, NetScope*scope,

      elaborate_scope_funcs(des, scope, funcs);

+	// Look for implicit modules and implicit gates for them.
+
+      for (map<perm_string,Module*>::iterator cur = nested_modules.begin()
+		 ; cur != nested_modules.end() ; ++cur) {
+	      // Skip modules that must be explicitly instantiated.
+	    if (cur->second->port_count() > 0)
+		  continue;
+
+	    PGModule*nested_gate = new PGModule(cur->second, cur->second->mod_name());
+	    nested_gate->set_line(*cur->second);
+	    gates_.push_back(nested_gate);
+      }
+
 	// Gates include modules, which might introduce new scopes, so
 	// scan all of them to create those scopes.

@@ -618,8 +1052,10 @@ bool PGenerate::generate_scope_loop_(Design*des, NetScope*container)

 	// Check the generate block name.

-	// A generate "loop" can not have the same name as another scope object.
-      const NetScope *child = container->child(hname_t(scope_name));
+	// A generate "loop" can not have the same name as another
+	// scope object. Find any scope with this name, not just an
+	// exact match scope.
+      const NetScope *child = container->child_byname(scope_name);
      if (child) {
 	    cerr << get_fileline() << ": error: generate \"loop\" and ";
 	    child->print_type(cerr);
@@ -707,7 +1143,7 @@ bool PGenerate::generate_scope_loop_(Design*des, NetScope*container)
 							 genvar_verinum);
 		    // The file and line information should really come
 		    // from the genvar statement, not the for loop.
-		  scope->set_localparam(loop_index, gp, *this);
+		  scope->set_parameter(loop_index, gp, *this);
 		  if (debug_scopes)
 			cerr << get_fileline() << ": debug: "
 			     << "Create implicit localparam "
@@ -960,6 +1396,12 @@ bool PGenerate::generate_scope_case_(Design*des, NetScope*container)
 	    return true;
      }

+      if (debug_scopes) {
+	    cerr << get_fileline() << ": PGenerate::generate_scope_case_: "
+		 << "Generate subscope " << use_name
+		 << " and elaborate." << endl;
+      }
+
      NetScope*scope = new NetScope(container, use_name,
 				    NetScope::GENBLOCK);
      scope->set_line(get_file(), get_lineno());
@@ -1029,7 +1471,13 @@ void PGenerate::elaborate_subscope_direct_(Design*des, NetScope*scope)
      typedef list<PGenerate*>::const_iterator generate_it_t;
      for (generate_it_t cur = generate_schemes.begin()
 		 ; cur != generate_schemes.end() ; ++ cur ) {
-	    (*cur) -> generate_scope(des, scope);
+	    PGenerate*curp = *cur;
+	    if (debug_scopes) {
+		  cerr << get_fileline() << ": elaborate_subscope_direct_: "
+		       << "Elaborate direct subscope " << curp->scope_name
+		       << " within scope " << scope_name << endl;
+	    }
+	    curp -> generate_scope(des, scope);
      }
 }

@@ -1041,6 +1489,21 @@ void PGenerate::elaborate_subscope_(Design*des, NetScope*scope)
 	    scope->add_genvar((*cur).first, (*cur).second);
      }

+	// Scan the localparams in this scope, and store the information
+        // needed to evaluate the parameter expressions. The expressions
+	// will be evaluated later, once all parameter overrides for this
+	// module have been done.
+      collect_scope_localparams_(des, scope, localparams);
+
+	// Run through the defparams for this scope and save the result
+	// in a table for later final override.
+
+      typedef list<PGenerate::named_expr_t>::const_iterator defparms_iter_t;
+      for (defparms_iter_t cur = defparms.begin()
+		 ; cur != defparms.end() ; ++ cur ) {
+	    scope->defparams.push_back(make_pair(cur->first, cur->second));
+      }
+
 	// Scan the generated scope for nested generate schemes,
 	// and *generate* new scopes, which is slightly different
 	// from simple elaboration.
@@ -1051,12 +1514,6 @@ void PGenerate::elaborate_subscope_(Design*des, NetScope*scope)
 	    (*cur) -> generate_scope(des, scope);
      }

-	// Scan the localparams in this scope, and store the information
-        // needed to evaluate the parameter expressions. The expressions
-	// will be evaluated later, once all parameter overrides for this
-	// module have been done.
-      collect_scope_localparams_(des, scope, localparams);
-
        // Scan through all the task and function declarations in this
        // scope.
      elaborate_scope_tasks(des, scope, tasks);
@@ -1081,7 +1538,7 @@ void PGenerate::elaborate_subscope_(Design*des, NetScope*scope)

      if (debug_scopes)
 	    cerr << get_fileline() << ": debug: Generated scope " << scope_path(scope)
-		 << " by generate block " << scope_name << endl;
+		 << " for generate block " << scope_name << endl;

 	// Save the scope that we created, for future use.
      scope_list_.push_back(scope);
@@ -1201,7 +1658,7 @@ void PGModule::elaborate_scope_mod_(Design*des, Module*mod, NetScope*sc) const
 		  continue;
 	    }

-	    cerr << get_fileline() << ": error: You cannot instantiate "
+	    cerr << get_fileline() << ": error: You can not instantiate "
 		 << "module " << mod->mod_name() << " within itself." << endl;
 	    cerr << get_fileline() << ":      : The offending instance is "
 		 << get_name() << " within " << scope_path(scn) << "." << endl;
@@ -1294,8 +1751,12 @@ void PGModule::elaborate_scope_mod_instances_(Design*des, Module*mod, NetScope*s
 		       << "." << endl;
 	    }

-	      // Create the new scope as a MODULE with my name.
-	    NetScope*my_scope = new NetScope(sc, use_name, NetScope::MODULE);
+	      // Create the new scope as a MODULE with my name. Note
+	      // that if this is a nested module, mark it thus so that
+	      // scope searches will continue into the parent scope.
+	    NetScope*my_scope = new NetScope(sc, use_name, NetScope::MODULE,
+					     bound_type_? true : false,
+					     mod->program_block);
 	    my_scope->set_line(get_file(), mod->get_file(),
 	                       get_lineno(), mod->get_lineno());
 	    my_scope->set_module_name(mod->mod_name());
@@ -1512,7 +1973,9 @@ void PBlock::elaborate_scope(Design*des, NetScope*scope) const
 		       << "Elaborate block scope " << use_name
 		       << " within " << scope_path(scope) << endl;

-	    my_scope = new NetScope(scope, use_name, bl_type_==BL_PAR
+	      // The scope type is begin-end or fork-join. The
+	      // sub-types of fork-join are not interesting to the scope.
+	    my_scope = new NetScope(scope, use_name, bl_type_!=BL_SEQ
 				    ? NetScope::FORK_JOIN
 				    : NetScope::BEGIN_END);
 	    my_scope->set_line(get_file(), get_lineno());
@@ -1574,6 +2037,17 @@ void PDelayStatement::elaborate_scope(Design*des, NetScope*scope) const
 	    statement_ -> elaborate_scope(des, scope);
 }

+/*
+ * Statements that contain a further statement but do not
+ * intrinsically add a scope need to elaborate_scope the contained
+ * statement.
+ */
+void PDoWhile::elaborate_scope(Design*des, NetScope*scope) const
+{
+      if (statement_)
+	    statement_ -> elaborate_scope(des, scope);
+}
+
 /*
 * Statements that contain a further statement but do not
 * intrinsically add a scope need to elaborate_scope the contained
@@ -1585,6 +2059,18 @@ void PEventStatement::elaborate_scope(Design*des, NetScope*scope) const
 	    statement_ -> elaborate_scope(des, scope);
 }

+/*
+ * The standard says that we create an implicit scope for foreach
+ * loops, but that is just to hold the index variables, and we'll
+ * handle them by creating unique names. So just jump into the
+ * contained statement for scope elaboration.
+ */
+void PForeach::elaborate_scope(Design*des, NetScope*scope) const
+{
+      if (statement_)
+	    statement_ -> elaborate_scope(des, scope);
+}
+
 /*
 * Statements that contain a further statement but do not
 * intrinsically add a scope need to elaborate_scope the contained
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -0,0 +1,246 @@
+/*
+ * Copyright (c) 2012-2014 Stephen Williams (steve@icarus.com)
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+# include  "pform_types.h"
+# include  "netlist.h"
+# include  "netclass.h"
+# include  "netdarray.h"
+# include  "netenum.h"
+# include  "netparray.h"
+# include  "netscalar.h"
+# include  "netstruct.h"
+# include  "netvector.h"
+# include  "netmisc.h"
+# include  <typeinfo>
+# include  "ivl_assert.h"
+
+using namespace std;
+
+/*
+ * Elaborations of types may vary depending on the scope that it is
+ * done in, so keep a per-scope cache of the results.
+ */
+ivl_type_s* data_type_t::elaborate_type(Design*des, NetScope*scope)
+{
+      Definitions*use_definitions = scope;
+      if (use_definitions == 0)
+	    use_definitions = des;
+
+      map<Definitions*,ivl_type_s*>::iterator pos = cache_type_elaborate_.lower_bound(use_definitions);
+      if (pos->first == use_definitions)
+	    return pos->second;
+
+      ivl_type_s*tmp = elaborate_type_raw(des, scope);
+      cache_type_elaborate_.insert(pos, pair<NetScope*,ivl_type_s*>(scope, tmp));
+      return tmp;
+}
+
+ivl_type_s* data_type_t::elaborate_type_raw(Design*des, NetScope*) const
+{
+      cerr << get_fileline() << ": internal error: "
+	   << "Elaborate method not implemented for " << typeid(*this).name()
+	   << "." << endl;
+      des->errors += 1;
+      return 0;
+}
+
+ivl_type_s* atom2_type_t::elaborate_type_raw(Design*des, NetScope*) const
+{
+      switch (type_code) {
+	  case 64:
+	    if (signed_flag)
+		  return &netvector_t::atom2s64;
+	    else
+		  return &netvector_t::atom2u64;
+
+	  case 32:
+	    if (signed_flag)
+		  return &netvector_t::atom2s32;
+	    else
+		  return &netvector_t::atom2u32;
+
+	  case 16:
+	    if (signed_flag)
+		  return &netvector_t::atom2s16;
+	    else
+		  return &netvector_t::atom2u16;
+
+	  case 8:
+	    if (signed_flag)
+		  return &netvector_t::atom2s8;
+	    else
+		  return &netvector_t::atom2u8;
+
+	  default:
+	    cerr << get_fileline() << ": internal error: "
+		 << "atom2_type_t type_code=" << type_code << "." << endl;
+	    des->errors += 1;
+	    return 0;
+      }
+}
+
+ivl_type_s* class_type_t::elaborate_type_raw(Design*, NetScope*) const
+{
+      ivl_assert(*this, save_elaborated_type);
+      return save_elaborated_type;
+}
+
+/*
+ * elaborate_type_raw for enumerations is actually mostly performed
+ * during scope elaboration so that the enumeration literals are
+ * available at the right time. At that time, the netenum_t* object is
+ * stashed in the scope so that I can retrieve it here.
+ */
+ivl_type_s* enum_type_t::elaborate_type_raw(Design*des, NetScope*scope) const
+{
+      ivl_assert(*this, scope);
+      ivl_type_s*tmp = scope->enumeration_for_key(this);
+      if (tmp) return tmp;
+
+      tmp = des->enumeration_for_key(this);
+      return tmp;
+}
+
+ivl_type_s* vector_type_t::elaborate_type_raw(Design*des, NetScope*scope) const
+{
+      vector<netrange_t> packed;
+
+      if (pdims.get()) {
+	    for (list<pform_range_t>::const_iterator cur = pdims->begin()
+		       ; cur != pdims->end() ; ++ cur) {
+
+		  NetExpr*me = elab_and_eval(des, scope, cur->first, 0, true);
+
+		  NetExpr*le = elab_and_eval(des, scope, cur->second, 0, true);
+
+		    /* If elaboration failed for either expression, we
+		       should have already reported the error, so just
+		       skip the following evaluation to recover. */
+
+		  long mnum = 0, lnum = 0;
+		  if ( me && ! eval_as_long(mnum, me) ) {
+			assert(0);
+			des->errors += 1;
+		  }
+
+		  if ( le && ! eval_as_long(lnum, le) ) {
+			assert(0);
+			des->errors += 1;
+		  }
+
+		  packed.push_back(netrange_t(mnum, lnum));
+	    }
+      }
+
+      netvector_t*tmp = new netvector_t(packed, base_type);
+      tmp->set_signed(signed_flag);
+      tmp->set_isint(integer_flag);
+
+      return tmp;
+}
+
+ivl_type_s* real_type_t::elaborate_type_raw(Design*, NetScope*) const
+{
+      switch (type_code) {
+	  case REAL:
+	    return &netreal_t::type_real;
+	  case SHORTREAL:
+	    return &netreal_t::type_shortreal;
+      }
+      return 0;
+}
+
+ivl_type_s* string_type_t::elaborate_type_raw(Design*, NetScope*) const
+{
+      return &netstring_t::type_string;
+}
+
+ivl_type_s* parray_type_t::elaborate_type_raw(Design*des, NetScope*) const
+{
+      cerr << get_fileline() << " : sorry: "
+           << "Packed arrays are not currently supported in this context."
+           << endl;
+      des->errors += 1;
+      return 0;
+}
+
+netstruct_t* struct_type_t::elaborate_type_raw(Design*des, NetScope*scope) const
+{
+      netstruct_t*res = new netstruct_t;
+
+      res->packed(packed_flag);
+
+      if (union_flag)
+	    res->union_flag(true);
+
+      for (list<struct_member_t*>::iterator cur = members->begin()
+		 ; cur != members->end() ; ++ cur) {
+
+	      // Elaborate the type of the member.
+	    struct_member_t*curp = *cur;
+	    ivl_type_t mem_vec = curp->type->elaborate_type(des, scope);
+	    if (mem_vec == 0)
+		  continue;
+
+	      // There may be several names that are the same type:
+	      //   <data_type> name1, name2, ...;
+	      // Process all the member, and give them a type.
+	    for (list<decl_assignment_t*>::iterator name = curp->names->begin()
+		       ; name != curp->names->end() ;  ++ name) {
+		  decl_assignment_t*namep = *name;
+
+		  netstruct_t::member_t memb;
+		  memb.name = namep->name;
+		  memb.net_type = mem_vec;
+		  res->append_member(des, memb);
+	    }
+      }
+
+      return res;
+}
+
+ivl_type_s* uarray_type_t::elaborate_type_raw(Design*des, NetScope*scope) const
+{
+
+      ivl_type_t btype = base_type->elaborate_type(des, scope);
+
+      assert(dims->size() >= 1);
+      list<pform_range_t>::const_iterator cur = dims->begin();
+
+	// Special case: if the dimension is nil:nil, this is a
+	// dynamic array. Note that we only know how to handle dynamic
+	// arrays with 1 dimension at a time.
+      if (cur->first==0 && cur->second==0) {
+	    assert(dims->size()==1);
+	    ivl_type_s*res = new netdarray_t(btype);
+	    return res;
+      }
+
+      vector<netrange_t> dimensions;
+      bool bad_range = evaluate_ranges(des, scope, dimensions, *dims);
+
+      if (bad_range) {
+	    cerr << get_fileline() << " : warning: "
+		 << "Bad dimensions for type here." << endl;
+      }
+
+      ivl_assert(*this, btype);
+      ivl_type_s*res = new netuarray_t(dimensions, btype);
+      return res;
+}
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008,2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2008-2012 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -55,7 +55,7 @@ bool AProcess::elaborate(Design*des, NetScope*scope) const
 	// Evaluate the attributes for this process, if there
 	// are any. These attributes are to be attached to the
 	// NetProcTop object.
-      struct attrib_list_t*attrib_list = 0;
+      struct attrib_list_t*attrib_list;
      unsigned attrib_list_n = 0;
      attrib_list = evaluate_attributes(attributes, attrib_list_n, des, scope);

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1998-2013 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -26,7 +26,9 @@
 * target.
 */
 # include  "target.h"
+# include  "netclass.h"
 # include  "netlist.h"
+# include  "compiler.h"
 # include  <typeinfo>
 # include  <cassert>
 # include  <cstring>
@@ -165,6 +167,11 @@ bool NetSignExtend::emit_node(struct target_t*tgt) const
      return tgt->sign_extend(this);
 }

+bool NetSubstitute::emit_node(struct target_t*tgt) const
+{
+      return tgt->substitute(this);
+}
+
 bool NetUReduce::emit_node(struct target_t*tgt) const
 {
      return tgt->ureduce(this);
@@ -259,6 +266,17 @@ bool NetDisable::emit_proc(struct target_t*tgt) const
      return tgt->proc_disable(this);
 }

+bool NetDoWhile::emit_proc(struct target_t*tgt) const
+{
+      tgt->proc_do_while(this);
+      return true;
+}
+
+void NetDoWhile::emit_proc_recurse(struct target_t*tgt) const
+{
+      proc_->emit_proc(tgt);
+}
+
 bool NetForce::emit_proc(struct target_t*tgt) const
 {
      return tgt->proc_force(this);
@@ -270,6 +288,11 @@ bool NetForever::emit_proc(struct target_t*tgt) const
      return true;
 }

+bool NetForLoop::emit_proc(struct target_t*tgt) const
+{
+      return tgt->proc_block(as_block_);
+}
+
 bool NetFree::emit_proc(struct target_t*tgt) const
 {
      tgt->proc_free(this);
@@ -316,6 +339,11 @@ bool NetWhile::emit_proc(struct target_t*tgt) const
      return true;
 }

+void NetWhile::emit_proc_recurse(struct target_t*tgt) const
+{
+      proc_->emit_proc(tgt);
+}
+
 void NetBlock::emit_recurse(struct target_t*tgt) const
 {
      if (last_ == 0)
@@ -378,16 +406,32 @@ void NetRepeat::emit_recurse(struct target_t*tgt) const
 	    statement_->emit_proc(tgt);
 }

+void netclass_t::emit_scope(struct target_t*tgt) const
+{
+      class_scope_->emit_scope(tgt);
+}
+
 void NetScope::emit_scope(struct target_t*tgt) const
 {
+      if (debug_emit) {
+	    cerr << "NetScope::emit_scope: "
+		 << "Emit scope " << scope_path(this) << endl;
+      }
+
      tgt->scope(this);

      for (NetEvent*cur = events_ ;  cur ;  cur = cur->snext_)
 	    tgt->event(cur);

-      for (list<netenum_t*>::const_iterator cur = enum_sets_.begin()
+      for (map<perm_string,netclass_t*>::const_iterator cur = classes_.begin()
+		 ; cur != classes_.end() ; ++cur) {
+	    cur->second->emit_scope(tgt);
+	    tgt->class_type(this, cur->second);
+      }
+
+      for (map<const enum_type_t*,netenum_t*>::const_iterator cur = enum_sets_.begin()
 		 ; cur != enum_sets_.end() ;  ++cur)
-	    tgt->enumeration(this, *cur);
+	    tgt->enumeration(this, cur->second);

      for (map<hname_t,NetScope*>::const_iterator cur = children_.begin()
 		 ; cur != children_.end() ; ++ cur )
@@ -416,11 +460,20 @@ bool NetScope::emit_defs(struct target_t*tgt) const
 {
      bool flag = true;

+      if (debug_emit) {
+	    cerr << "NetScope::emit_defs: "
+		 << "Emit definitions for " << scope_path(this) << endl;
+      }
+
      switch (type_) {
+	  case PACKAGE:
 	  case MODULE:
 	    for (map<hname_t,NetScope*>::const_iterator cur = children_.begin()
 		       ; cur != children_.end() ; ++ cur )
 		  flag &= cur->second->emit_defs(tgt);
+	    for (map<perm_string,netclass_t*>::const_iterator cur = classes_.begin()
+		       ; cur != classes_.end() ; ++ cur)
+		  flag &= cur->second->emit_defs(tgt);
 	    break;

 	  case FUNC:
@@ -439,9 +492,9 @@ bool NetScope::emit_defs(struct target_t*tgt) const
      return flag;
 }

-void NetWhile::emit_proc_recurse(struct target_t*tgt) const
+bool netclass_t::emit_defs(struct target_t*tgt) const
 {
-      proc_->emit_proc(tgt);
+      return class_scope_->emit_defs(tgt);
 }

 int Design::emit(struct target_t*tgt) const
@@ -451,11 +504,31 @@ int Design::emit(struct target_t*tgt) const
      if (tgt->start_design(this) == false)
 	    return -2;

-	// enumerate the scopes
-      for (list<NetScope*>::const_iterator scope = root_scopes_.begin();
-	   scope != root_scopes_.end(); ++ scope )
-	    (*scope)->emit_scope(tgt);
+      for (map<NetScope*,PTaskFunc*>::const_iterator scope = root_tasks_.begin()
+		 ; scope != root_tasks_.end() ; ++ scope) {
+	    scope->first->emit_scope(tgt);
+	    scope->first->emit_defs(tgt);
+      }

+	// enumerate package scopes
+      for (map<perm_string,NetScope*>::const_iterator scope = packages_.begin()
+		 ; scope != packages_.end() ; ++ scope) {
+	    scope->second->emit_scope(tgt);
+      }
+
+      for (map<perm_string,netclass_t*>::const_iterator cur = classes_.begin()
+		 ; cur != classes_.end() ; ++cur) {
+	    const NetScope*use_scope = cur->second->class_scope();
+	    cur->second->emit_scope(tgt);
+	    tgt->class_type(use_scope, cur->second);
+	    cur->second->emit_defs(tgt);
+      }
+
+	// enumerate root scopes
+      for (list<NetScope*>::const_iterator scope = root_scopes_.begin()
+		 ; scope != root_scopes_.end(); ++ scope ) {
+	    (*scope)->emit_scope(tgt);
+      }

 	// emit nodes
      bool nodes_rc = true;
@@ -475,8 +548,11 @@ int Design::emit(struct target_t*tgt) const

 	// emit task and function definitions
      bool tasks_rc = true;
-      for (list<NetScope*>::const_iterator scope = root_scopes_.begin();
-	   scope != root_scopes_.end(); ++ scope )
+      for (map<perm_string,NetScope*>::const_iterator scope = packages_.begin()
+		 ; scope != packages_.end() ; ++ scope )
+	    tasks_rc &= scope->second->emit_defs(tgt);
+      for (list<NetScope*>::const_iterator scope = root_scopes_.begin()
+		 ; scope != root_scopes_.end(); ++ scope )
 	    tasks_rc &= (*scope)->emit_defs(tgt);


@@ -487,6 +563,15 @@ int Design::emit(struct target_t*tgt) const
      for (const NetAnalogTop*idx = aprocs_ ;  idx ;  idx = idx->next_)
 	    proc_rc &= idx->emit(tgt);

+      if (nodes_rc == false)
+	    tgt->errors += 1;
+      if (tasks_rc == false)
+	    tgt->errors += 1;
+      if (proc_rc == false)
+	    tgt->errors += 1;
+      if (branches_rc == false)
+	    tgt->errors += 1;
+
      rc = tgt->end_design(this);

      if (nodes_rc == false)
@@ -494,7 +579,7 @@ int Design::emit(struct target_t*tgt) const
      if (tasks_rc == false)
 	    return -2;
      if (proc_rc == false)
-	  return -3;
+	    return -3;
      if (branches_rc == false)
 	    return -4;

@@ -506,6 +591,11 @@ void NetEAccess::expr_scan(struct expr_scan_t*tgt) const
      tgt->expr_access_func(this);
 }

+void NetEArrayPattern::expr_scan(struct expr_scan_t*tgt) const
+{
+      tgt->expr_array_pattern(this);
+}
+
 void NetEBinary::expr_scan(struct expr_scan_t*tgt) const
 {
      tgt->expr_binary(this);
@@ -546,11 +636,31 @@ void NetEEvent::expr_scan(struct expr_scan_t*tgt) const
      tgt->expr_event(this);
 }

+void NetELast::expr_scan(struct expr_scan_t*tgt) const
+{
+      tgt->expr_last(this);
+}
+
 void NetENetenum::expr_scan(struct expr_scan_t*tgt) const
 {
      tgt->expr_netenum(this);
 }

+void NetENew::expr_scan(struct expr_scan_t*tgt) const
+{
+      tgt->expr_new(this);
+}
+
+void NetENull::expr_scan(struct expr_scan_t*tgt) const
+{
+      tgt->expr_null(this);
+}
+
+void NetEProperty::expr_scan(struct expr_scan_t*tgt) const
+{
+      tgt->expr_property(this);
+}
+
 void NetEScope::expr_scan(struct expr_scan_t*tgt) const
 {
      tgt->expr_scope(this);
@@ -566,6 +676,21 @@ void NetESFunc::expr_scan(struct expr_scan_t*tgt) const
      tgt->expr_sfunc(this);
 }

+void NetEShallowCopy::expr_scan(struct expr_scan_t*tgt) const
+{
+      tgt->expr_scopy(this);
+}
+
+void NetEShallowCopy::expr_scan_oper1(struct expr_scan_t*tgt) const
+{
+      arg1_->expr_scan(tgt);
+}
+
+void NetEShallowCopy::expr_scan_oper2(struct expr_scan_t*tgt) const
+{
+      arg2_->expr_scan(tgt);
+}
+
 void NetEUFunc::expr_scan(struct expr_scan_t*tgt) const
 {
      tgt->expr_ufunc(this);
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-1999 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1998-2014 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -44,6 +44,14 @@ verinum* PEBinary::eval_const(Design*des, NetScope*scope) const
      verinum*res;

      switch (op_) {
+	  case 'p': {
+		if (l->is_defined() && r->is_defined()) {
+		      res = new verinum(pow(*l, *r));
+		} else {
+		      res = new verinum(verinum::Vx, l->len());
+		}
+		break;
+	  }
 	  case '+': {
 		if (l->is_defined() && r->is_defined()) {
 		      res = new verinum(*l + *r);
@@ -261,7 +269,7 @@ verinum* PEUnary::eval_const(Design*des, NetScope*scope) const
 		for (unsigned idx = 0 ;  idx < val->len() ;  idx += 1)
 		      tmp.set(idx, val->get(idx));

-		*val = v_not(tmp) + verinum(verinum::V1, 1);
+		*val = -tmp;
 		val->has_sign(true);
 		return val;
 	  }
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  "config.h"
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,11 +14,8 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
-#ifdef HAVE_CVS_IDENT
-#ident "$Id: hello_vpi.c,v 1.5 2007/01/17 05:35:48 steve Exp $"
-#endif

 /*
 * This file contains an example VPI module to demonstrate the tools
@@ -60,22 +57,3 @@ void (*vlog_startup_routines[])() = {
      my_hello_register,
      0
 };
-/*
- * $Log: hello_vpi.c,v $
- * Revision 1.5  2007/01/17 05:35:48  steve
- *  Fix typo is hello_vpi.c example.
- *
- * Revision 1.4  2006/10/30 22:46:25  steve
- *  Updates for Cygwin portability (pr1585922)
- *
- * Revision 1.3  2002/08/12 01:35:01  steve
- *  conditional ident string using autoconfig.
- *
- * Revision 1.2  2002/08/11 23:47:04  steve
- *  Add missing Log and Ident strings.
- *
- * Revision 1.1  2002/04/18 03:25:16  steve
- *  More examples.
- *
- */
-
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *   $Id: sqrt-virtex.v,v 1.5 2007/03/22 16:08:18 steve Exp $"
 */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *   $Id: sqrt.vl,v 1.5 2007/03/22 16:08:18 steve Exp $"
 */
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 // This example describes a 16x1 RAM that can be synthesized into
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1999-2013 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -24,6 +24,7 @@
 # include  <iostream>

 # include  "netlist.h"
+# include  "netvector.h"
 # include  "netmisc.h"
 # include  "ivl_assert.h"

@@ -118,11 +119,11 @@ NetNet* NetEBAdd::synthesize(Design*des, NetScope*scope, NetExpr*root)
      }

      perm_string path = lsig->scope()->local_symbol();
-      NetNet*osig = new NetNet(lsig->scope(), path, NetNet::IMPLICIT, width);
+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
+      osig_vec->set_signed(has_sign());
+      NetNet*osig = new NetNet(lsig->scope(), path, NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(expr_type());
-      osig->set_signed(has_sign());

      perm_string oname = osig->scope()->local_symbol();
      NetAddSub *adder = new NetAddSub(lsig->scope(), oname, width);
@@ -173,11 +174,11 @@ NetNet* NetEBBits::synthesize(Design*des, NetScope*scope, NetExpr*root)
      rsig = pad_to_width(des, rsig, width, *this);

      assert(lsig->vector_width() == rsig->vector_width());
+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, width);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(expr_type());

      perm_string oname = scope->local_symbol();
      NetLogic*gate;
@@ -243,11 +244,11 @@ NetNet* NetEBComp::synthesize(Design*des, NetScope*scope, NetExpr*root)
 		  rsig = pad_to_width(des, rsig, width, *this);
      }

+      netvector_t*osig_vec = new netvector_t(IVL_VT_LOGIC);
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, 1);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(IVL_VT_LOGIC);

 	// Test if the comparison is signed.
 	//
@@ -273,7 +274,7 @@ NetNet* NetEBComp::synthesize(Design*des, NetScope*scope, NetExpr*root)

      if (op_ == 'E' || op_ == 'N') {
 	    NetCaseCmp*gate = new NetCaseCmp(scope, scope->local_symbol(),
-					     width, op_=='E'?true:false);
+					     width, op_=='E'?NetCaseCmp::EEQ:NetCaseCmp::NEQ);
 	    gate->set_line(*this);
 	    connect(gate->pin(0), osig->pin(0));
 	    connect(gate->pin(1), lsig->pin(0));
@@ -390,11 +391,11 @@ NetNet* NetEBPow::synthesize(Design*des, NetScope*scope, NetExpr*root)
      connect(powr->pin_DataA(), lsig->pin(0));
      connect(powr->pin_DataB(), rsig->pin(0));

+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
+      osig_vec->set_signed(has_sign());
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, width);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(expr_type());
-      osig->set_signed(has_sign());
      osig->local_flag(true);

      connect(powr->pin_Result(), osig->pin(0));
@@ -427,11 +428,11 @@ NetNet* NetEBMult::synthesize(Design*des, NetScope*scope, NetExpr*root)
      connect(mult->pin_DataA(), lsig->pin(0));
      connect(mult->pin_DataB(), rsig->pin(0));

+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
+      osig_vec->set_signed(has_sign());
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, width);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(expr_type());
-      osig->set_signed(has_sign());
      osig->local_flag(true);

      connect(mult->pin_Result(), osig->pin(0));
@@ -452,11 +453,11 @@ NetNet* NetEBDiv::synthesize(Design*des, NetScope*scope, NetExpr*root)
      if (real_args) width = 1;
      else width = expr_width();

+      netvector_t*osig_vec = new netvector_t(lsig->data_type(), width-1, 0);
+      osig_vec->set_signed(has_sign());
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, width);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(lsig->data_type());
-      osig->set_signed(has_sign());
      osig->local_flag(true);

      switch (op()) {
@@ -530,10 +531,10 @@ NetNet* NetEBLogic::synthesize(Design*des, NetScope*scope, NetExpr*root)
 	    return 0;
      }

+      netvector_t*osig_tmp = new netvector_t(expr_type());
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, 1);
+			       NetNet::IMPLICIT, osig_tmp);
      osig->set_line(*this);
-      osig->data_type(expr_type());
      osig->local_flag(true);

      NetLogic*olog;
@@ -597,10 +598,10 @@ NetNet* NetEBShift::synthesize(Design*des, NetScope*scope, NetExpr*root)
 	    if (shift == 0)
 		  return lsig;

+	    netvector_t*osig_vec = new netvector_t(expr_type(), expr_width()-1,0);
 	    NetNet*osig = new NetNet(scope, scope->local_symbol(),
-				     NetNet::IMPLICIT, expr_width());
+				     NetNet::IMPLICIT, osig_vec);
 	    osig->set_line(*this);
-	    osig->data_type(expr_type());
 	    osig->local_flag(true);

 	      // ushift is the amount of pad created by the shift.
@@ -614,14 +615,15 @@ NetNet* NetEBShift::synthesize(Design*des, NetScope*scope, NetExpr*root)
 	      // to the amount left by the shift.
 	    NetPartSelect*psel = new NetPartSelect(lsig, shift<0? ushift : 0,
 						   part_width,
-						   NetPartSelect::VP);
+						   NetPartSelect::VP,
+	                                           signed_flag && right_flag);
 	    psel->set_line(*this);
 	    des->add_node(psel);

+	    netvector_t*psig_vec = new netvector_t(expr_type(), part_width-1, 0);
 	    NetNet*psig = new NetNet(scope, scope->local_symbol(),
-				     NetNet::IMPLICIT, part_width);
+				     NetNet::IMPLICIT, psig_vec);
 	    psig->set_line(*this);
-	    psig->data_type(expr_type());
 	    psig->local_flag(true);
 	    connect(psig->pin(0), psel->pin(0));

@@ -646,10 +648,11 @@ NetNet* NetEBShift::synthesize(Design*des, NetScope*scope, NetExpr*root)
 					 znum);
 	    des->add_node(zcon);

+	    netvector_t*zsig_vec = new netvector_t(osig->data_type(),
+						   znum.len()-1, 0);
 	    NetNet*zsig = new NetNet(scope, scope->local_symbol(),
-				     NetNet::WIRE, znum.len());
+				     NetNet::WIRE, zsig_vec);
 	    zsig->set_line(*this);
-	    zsig->data_type(osig->data_type());
 	    zsig->local_flag(true);
 	    connect(zcon->pin(0), zsig->pin(0));

@@ -676,10 +679,10 @@ NetNet* NetEBShift::synthesize(Design*des, NetScope*scope, NetExpr*root)

      if (rsig == 0) return 0;

+      netvector_t*osig_vec = new netvector_t(expr_type(), expr_width()-1, 0);
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, expr_width());
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(expr_type());
      osig->local_flag(true);

      NetCLShift*dev = new NetCLShift(scope, scope->local_symbol(),
@@ -702,11 +705,11 @@ NetNet* NetEBShift::synthesize(Design*des, NetScope*scope, NetExpr*root)
 NetNet* NetEConcat::synthesize(Design*des, NetScope*scope, NetExpr*root)
 {
 	/* First, synthesize the operands. */
-      unsigned num_parms = parms_.count();
-      NetNet**tmp = new NetNet*[parms_.count()];
+      unsigned num_parms = parms_.size();
+      NetNet**tmp = new NetNet*[parms_.size()];
      bool flag = true;
      ivl_variable_type_t data_type = IVL_VT_NO_TYPE;
-      for (unsigned idx = 0 ;  idx < parms_.count() ;  idx += 1) {
+      for (unsigned idx = 0 ;  idx < parms_.size() ;  idx += 1) {
 	    if (parms_[idx]->expr_width() == 0) {
 		    /* We need to synthesize a replication of zero. */
 		  tmp[idx] = parms_[idx]->synthesize(des, scope, root);
@@ -739,10 +742,10 @@ NetNet* NetEConcat::synthesize(Design*des, NetScope*scope, NetExpr*root)

 	/* Make a NetNet object to carry the output vector. */
      perm_string path = scope->local_symbol();
-      NetNet*osig = new NetNet(scope, path, NetNet::IMPLICIT, expr_width());
+      netvector_t*osig_vec = new netvector_t(data_type, expr_width()-1, 0);
+      NetNet*osig = new NetNet(scope, path, NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(data_type);

      NetConcat*concat = new NetConcat(scope, scope->local_symbol(),
 				       osig->vector_width(),
@@ -754,8 +757,8 @@ NetNet* NetEConcat::synthesize(Design*des, NetScope*scope, NetExpr*root)
      unsigned count_input_width = 0;
      unsigned cur_pin = 1;
      for (unsigned rpt = 0; rpt < repeat(); rpt += 1) {
-	    for (unsigned idx = 0 ;  idx < parms_.count() ;  idx += 1) {
-		  unsigned concat_item = parms_.count()-idx-1;
+	    for (unsigned idx = 0 ;  idx < parms_.size() ;  idx += 1) {
+		  unsigned concat_item = parms_.size()-idx-1;
 		  if (tmp[concat_item] == 0) continue;
 		  connect(concat->pin(cur_pin), tmp[concat_item]->pin(0));
 		  cur_pin += 1;
@@ -785,11 +788,11 @@ NetNet* NetEConst::synthesize(Design*des, NetScope*scope, NetExpr*)
 	    return 0;
      }

-      NetNet*osig = new NetNet(scope, path, NetNet::IMPLICIT, width);
+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
+      osig_vec->set_signed(has_sign());
+      NetNet*osig = new NetNet(scope, path, NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(expr_type());
-      osig->set_signed(has_sign());

      NetConst*con = new NetConst(scope, scope->local_symbol(), value());
      con->set_line(*this);
@@ -806,11 +809,11 @@ NetNet* NetECReal::synthesize(Design*des, NetScope*scope, NetExpr*)
 {
      perm_string path = scope->local_symbol();

-      NetNet*osig = new NetNet(scope, path, NetNet::WIRE, 1);
+      netvector_t*osig_vec = new netvector_t(IVL_VT_REAL);
+      osig_vec->set_signed(has_sign());
+      NetNet*osig = new NetNet(scope, path, NetNet::WIRE, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(IVL_VT_REAL);
-      osig->set_signed(has_sign());

      NetLiteral*con = new NetLiteral(scope, scope->local_symbol(), value_);
      con->set_line(*this);
@@ -839,10 +842,10 @@ NetNet* NetEUBits::synthesize(Design*des, NetScope*scope, NetExpr*root)
      }

      unsigned width = isig->vector_width();
+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, width);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(expr_type());
      osig->local_flag(true);

      perm_string oname = scope->local_symbol();
@@ -882,11 +885,12 @@ NetNet* NetEUnary::synthesize(Design*des, NetScope*scope, NetExpr*root)
 	    if (expr_->has_sign() == false)
 		  return sub;

+	    netvector_t*sig_vec = new netvector_t(sub->data_type(),
+						  sub->vector_width()-1, 0);
 	    NetNet*sig = new NetNet(scope, scope->local_symbol(),
-				    NetNet::WIRE, sub->vector_width());
+				    NetNet::WIRE, sig_vec);
 	    sig->set_line(*this);
 	    sig->local_flag(true);
-	    sig->data_type(sub->data_type());

 	    NetAbs*tmp = new NetAbs(scope, scope->local_symbol(), sub->vector_width());
 	    tmp->set_line(*this);
@@ -956,10 +960,10 @@ NetNet* NetEUReduce::synthesize(Design*des, NetScope*scope, NetExpr*root)
      gate->set_line(*this);
      des->add_node(gate);

+      netvector_t*osig_vec = new netvector_t(expr_type());
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::IMPLICIT, 1);
+			       NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(expr_type());
      osig->local_flag(true);

      connect(gate->pin(0), osig->pin(0));
@@ -977,7 +981,10 @@ NetNet* NetECast::synthesize(Design*des, NetScope*scope, NetExpr*root)

      switch (op()) {
 	  case 'v':
-	    isig = cast_to_int4(des, scope, isig, isig->vector_width());
+	    isig = cast_to_int4(des, scope, isig, expr_width());
+	    break;
+	  case '2':
+	    isig = cast_to_int2(des, scope, isig, expr_width());
 	    break;
 	  case 'r':
 	    isig = cast_to_real(des, scope, isig);
@@ -1006,8 +1013,6 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)

      if (sub == 0) return 0;

-      NetNet*off = 0;
-
 	// Detect the special case that there is a base expression and
 	// it is constant. In this case we can generate fixed part selects.
      if (NetEConst*base_const = dynamic_cast<NetEConst*>(base_)) {
@@ -1064,10 +1069,12 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 						  NetPartSelect::VP);
 	    des->add_node(sel);

+	    ivl_assert(*this, select_width > 0);
+	    netvector_t*tmp_vec = new netvector_t(sub->data_type(),
+						  select_width-1, 0);
 	    NetNet*tmp = new NetNet(scope, scope->local_symbol(),
-				    NetNet::WIRE, select_width);
+				    NetNet::WIRE, tmp_vec);
 	    tmp->set_line(*this);
-	    tmp->data_type(sub->data_type());
 	    tmp->local_flag(true);
 	    connect(sel->pin(0), tmp->pin(0));

@@ -1091,10 +1098,10 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 			connect(cat->pin(concat_count), above->pin(0));
 		  }

+		  tmp_vec = new netvector_t(sub->data_type(), expr_width()-1, 0);
 		  tmp = new NetNet(scope, scope->local_symbol(),
-				   NetNet::WIRE, expr_width());
+				   NetNet::WIRE, tmp_vec);
 		  tmp->set_line(*this);
-		  tmp->data_type(sub->data_type());
 		  tmp->local_flag(true);
 		  connect(cat->pin(0), tmp->pin(0));
 	    }
@@ -1105,16 +1112,17 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 	// actual part/bit select. Generate a NetPartSelect object to
 	// do the work, and replace "sub" with the selected output.
      if (base_ != 0) {
-	    off = base_->synthesize(des, scope, root);
+	    NetNet*off = base_->synthesize(des, scope, root);

 	    NetPartSelect*sel = new NetPartSelect(sub, off, expr_width(),
 	                                          base_->has_sign());
 	    sel->set_line(*this);
 	    des->add_node(sel);

+	    netvector_t*tmp_vec = new netvector_t(sub->data_type(),
+						  expr_width()-1, 0);
 	    NetNet*tmp = new NetNet(scope, scope->local_symbol(),
-				    NetNet::IMPLICIT, expr_width());
-	    tmp->data_type(sub->data_type());
+				    NetNet::IMPLICIT, tmp_vec);
 	    tmp->local_flag(true);
 	    tmp->set_line(*this);
 	    sub = tmp;
@@ -1135,10 +1143,11 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 	// extension or 0 extension, depending on the has_sign() mode
 	// of the expression.

+      netvector_t*net_vec = new netvector_t(expr_type(), expr_width()-1, 0);
+      net_vec->set_signed(has_sign());
      NetNet*net = new NetNet(scope, scope->local_symbol(),
-			      NetNet::IMPLICIT, expr_width());
+			      NetNet::IMPLICIT, net_vec);
      net->set_line(*this);
-      net->data_type(expr_type());
      net->local_flag(true);
      if (has_sign()) {
 	    NetSignExtend*pad = new NetSignExtend(scope,
@@ -1149,7 +1158,6 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)

 	    connect(pad->pin(1), sub->pin(0));
 	    connect(pad->pin(0), net->pin(0));
-	    net->set_signed(true);

      } else {

@@ -1166,10 +1174,10 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 	    con->set_line(*this);
 	    des->add_node(con);

+	    netvector_t*tmp_vec = new netvector_t(expr_type(), pad_width-1, 0);
 	    NetNet*tmp = new NetNet(scope, scope->local_symbol(),
-				    NetNet::IMPLICIT, pad_width);
+				    NetNet::IMPLICIT, tmp_vec);
 	    tmp->set_line(*this);
-	    tmp->data_type(expr_type());
 	    tmp->local_flag(true);
 	    connect(tmp->pin(0), con->pin(0));

@@ -1221,9 +1229,9 @@ NetNet* NetETernary::synthesize(Design *des, NetScope*scope, NetExpr*root)
      ivl_assert(*this, csig->vector_width() == 1);

      unsigned width=expr_width();
-      NetNet*osig = new NetNet(csig->scope(), path, NetNet::IMPLICIT, width);
+      netvector_t*osig_vec = new netvector_t(expr_type(), width-1, 0);
+      NetNet*osig = new NetNet(csig->scope(), path, NetNet::IMPLICIT, osig_vec);
      osig->set_line(*this);
-      osig->data_type(expr_type());
      osig->local_flag(true);

 	/* Make sure the types match. */
@@ -1263,14 +1271,31 @@ NetNet* NetETernary::synthesize(Design *des, NetScope*scope, NetExpr*root)
 */
 NetNet* NetESignal::synthesize(Design*des, NetScope*scope, NetExpr*root)
 {
+	// If this is a synthesis with a specific value for the
+	// signal, then replace it (here) with a constant value.
+      if (net_->scope()==scope && net_->name()==scope->genvar_tmp) {
+	    netvector_t*tmp_vec = new netvector_t(net_->data_type(),
+						  net_->vector_width()-1, 0);
+	    NetNet*tmp = new NetNet(scope, scope->local_symbol(),
+				    NetNet::IMPLICIT, tmp_vec);
+	    verinum tmp_val ((uint64_t)scope->genvar_tmp_val, net_->vector_width());
+	    NetConst*tmp_const = new NetConst(scope, scope->local_symbol(), tmp_val);
+	    tmp_const->set_line(*this);
+	    des->add_node(tmp_const);
+
+	    connect(tmp->pin(0), tmp_const->pin(0));
+	    return tmp;
+      }
+
      if (word_ == 0)
 	    return net_;

+      netvector_t*tmp_vec = new netvector_t(net_->data_type(),
+					    net_->vector_width()-1, 0);
      NetNet*tmp = new NetNet(scope, scope->local_symbol(),
-			      NetNet::IMPLICIT, net_->vector_width());
+			      NetNet::IMPLICIT, tmp_vec);
      tmp->set_line(*this);
      tmp->local_flag(true);
-      tmp->data_type(net_->data_type());

 	// For NetExpr objects, the word index is already converted to
 	// a canonical (lsb==0) address. Just use the index directly.
@@ -1301,16 +1326,16 @@ static NetEvWait* make_func_trigger(Design*des, NetScope*scope, NetExpr*root)
      NetEvWait*trigger = 0;

      NexusSet*nset = root->nex_input(false);
-      if (nset && (nset->count() > 0)) {
+      if (nset && (nset->size() > 0)) {
            NetEvent*ev = new NetEvent(scope->local_symbol());
            ev->set_line(*root);

            NetEvProbe*pr = new NetEvProbe(scope, scope->local_symbol(),
                                           ev, NetEvProbe::ANYEDGE,
-                                           nset->count());
+                                           nset->size());
            pr->set_line(*root);
-            for (unsigned idx = 0 ;  idx < nset->count() ;  idx += 1)
-                  connect(nset[0][idx], pr->pin(idx));
+            for (unsigned idx = 0 ;  idx < nset->size() ;  idx += 1)
+                  connect(nset->at(idx).lnk, pr->pin(idx));

            des->add_node(pr);

@@ -1355,12 +1380,12 @@ NetNet* NetESFunc::synthesize(Design*des, NetScope*scope, NetExpr*root)
      net->set_line(*this);
      des->add_node(net);

+      netvector_t*osig_vec = new netvector_t(def->type, def->wid-1, 0);
+      osig_vec->set_signed(def->type==IVL_VT_REAL? true : false);
      NetNet*osig = new NetNet(scope, scope->local_symbol(),
-			       NetNet::WIRE, def->wid);
+			       NetNet::WIRE, osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->set_signed(def->type==IVL_VT_REAL? true : false);
-      osig->data_type(def->type);

      connect(net->pin(0), osig->pin(0));

@@ -1386,11 +1411,11 @@ NetNet* NetESFunc::synthesize(Design*des, NetScope*scope, NetExpr*root)

 NetNet* NetEUFunc::synthesize(Design*des, NetScope*scope, NetExpr*root)
 {
-      svector<NetNet*> eparms (parms_.count());
+      vector<NetNet*> eparms (parms_.size());

        /* Synthesize the arguments. */
      bool errors = false;
-      for (unsigned idx = 0; idx < eparms.count(); idx += 1) {
+      for (unsigned idx = 0; idx < eparms.size(); idx += 1) {
 	    if (dynamic_cast<NetEEvent*> (parms_[idx])) {
 		  errors = true;
 		  continue;
@@ -1423,16 +1448,23 @@ NetNet* NetEUFunc::synthesize(Design*des, NetScope*scope, NetExpr*root)
      des->add_node(net);

        /* Create an output signal and connect it to the function. */
+      netvector_t*osig_vec = new netvector_t(result_sig_->expr_type(),
+					     result_sig_->vector_width()-1, 0);
      NetNet*osig = new NetNet(scope_, scope_->local_symbol(), NetNet::WIRE,
-                               result_sig_->vector_width());
+                               osig_vec);
      osig->set_line(*this);
      osig->local_flag(true);
-      osig->data_type(result_sig_->expr_type());
      connect(net->pin(0), osig->pin(0));

+      if (debug_synth2) {
+	    cerr << get_fileline() << ": NetEUFunc::synthesize: "
+		 << "result_sig_->vector_width()=" << result_sig_->vector_width()
+		 << ", osig->vector_width()=" << osig->vector_width() << endl;
+      }
+
        /* Connect the pins to the arguments. */
      NetFuncDef*def = func_->func_def();
-      for (unsigned idx = 0; idx < eparms.count(); idx += 1) {
+      for (unsigned idx = 0; idx < eparms.size(); idx += 1) {
 	    unsigned width = def->port(idx)->vector_width();
 	    NetNet*tmp;
 	    if (eparms[idx]->get_signed()) {
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1999-2012 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,7 +14,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include "config.h"
@@ -24,75 +24,85 @@
 # include  "functor.h"
 # include  "netlist.h"

+using namespace std;
+
 functor_t::~functor_t()
 {
 }

-void functor_t::event(class Design*, class NetEvent*)
+void functor_t::event(Design*, NetEvent*)
 {
 }

-void functor_t::signal(class Design*, class NetNet*)
+void functor_t::signal(Design*, NetNet*)
 {
 }

-void functor_t::process(class Design*, class NetProcTop*)
+void functor_t::process(Design*, NetProcTop*)
 {
 }

-void functor_t::lpm_abs(class Design*, class NetAbs*)
+void functor_t::lpm_abs(Design*, NetAbs*)
 {
 }

-void functor_t::lpm_add_sub(class Design*, class NetAddSub*)
+void functor_t::lpm_add_sub(Design*, NetAddSub*)
 {
 }

-void functor_t::lpm_compare(class Design*, class NetCompare*)
+void functor_t::lpm_compare(Design*, NetCompare*)
 {
 }

-void functor_t::lpm_const(class Design*, class NetConst*)
+void functor_t::lpm_concat(Design*, NetConcat*)
 {
 }

-void functor_t::lpm_divide(class Design*, class NetDivide*)
+void functor_t::lpm_const(Design*, NetConst*)
 {
 }

-void functor_t::lpm_literal(class Design*, class NetLiteral*)
+void functor_t::lpm_divide(Design*, NetDivide*)
 {
 }

-void functor_t::lpm_modulo(class Design*, class NetModulo*)
+void functor_t::lpm_literal(Design*, NetLiteral*)
 {
 }

-void functor_t::lpm_ff(class Design*, class NetFF*)
+void functor_t::lpm_modulo(Design*, NetModulo*)
 {
 }

-void functor_t::lpm_logic(class Design*, class NetLogic*)
+void functor_t::lpm_ff(Design*, NetFF*)
 {
 }

-void functor_t::lpm_mult(class Design*, class NetMult*)
+void functor_t::lpm_logic(Design*, NetLogic*)
 {
 }

-void functor_t::lpm_mux(class Design*, class NetMux*)
+void functor_t::lpm_mult(Design*, NetMult*)
 {
 }

-void functor_t::lpm_pow(class Design*, class NetPow*)
+void functor_t::lpm_mux(Design*, NetMux*)
 {
 }

-void functor_t::sign_extend(class Design*, class NetSignExtend*)
+void functor_t::lpm_part_select(Design*, NetPartSelect*)
 {
 }

-void functor_t::lpm_ureduce(class Design*, class NetUReduce*)
+void functor_t::lpm_pow(Design*, NetPow*)
+{
+}
+
+void functor_t::sign_extend(Design*, NetSignExtend*)
+{
+}
+
+void functor_t::lpm_ureduce(Design*, NetUReduce*)
 {
 }

@@ -185,6 +195,11 @@ void NetCompare::functor_node(Design*des, functor_t*fun)
      fun->lpm_compare(des, this);
 }

+void NetConcat::functor_node(Design*des, functor_t*fun)
+{
+      fun->lpm_concat(des, this);
+}
+
 void NetConst::functor_node(Design*des, functor_t*fun)
 {
      fun->lpm_const(des, this);
@@ -225,6 +240,11 @@ void NetMux::functor_node(Design*des, functor_t*fun)
      fun->lpm_mux(des, this);
 }

+void NetPartSelect::functor_node(Design*des, functor_t*fun)
+{
+      fun->lpm_part_select(des, this);
+}
+
 void NetPow::functor_node(Design*des, functor_t*fun)
 {
      fun->lpm_pow(des, this);
@@ -1,7 +1,7 @@
-#ifndef __functor_H
-#define __functor_H
+#ifndef IVL_functor_H
+#define IVL_functor_H
 /*
- * Copyright (c) 1999-2008 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1999-2014 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,7 +16,7 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 /*
@@ -57,6 +57,9 @@ struct functor_t {
 	/* This method is called for each structural comparator. */
      virtual void lpm_compare(class Design*des, class NetCompare*);

+	/* This method is called for each structural concatenation. */
+      virtual void lpm_concat(class Design*des, class NetConcat*);
+
 	/* This method is called for each structural constant. */
      virtual void lpm_const(class Design*des, class NetConst*);

@@ -81,6 +84,8 @@ struct functor_t {
 	/* This method is called for each MUX. */
      virtual void lpm_mux(class Design*des, class NetMux*);

+      virtual void lpm_part_select(class Design*des, class NetPartSelect*);
+
 	/* This method is called for each power. */
      virtual void lpm_pow(class Design*des, class NetPow*);

@@ -100,4 +105,4 @@ struct proc_match_t {
      virtual int block(class NetBlock*);
 };

-#endif
+#endif /* IVL_functor_H */
@@ -14,7 +14,7 @@
 #    You should have received a copy of the GNU Library General Public
 #    License along with this program; if not, write to the Free
 #    Software Foundation, Inc.,
-#    59 Temple Place - Suite 330
+#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 #    Boston, MA 02111-1307, USA
 #

@@ -28,7 +28,7 @@ SUFFIX=@SUFFIX@

 # These are used for linking...
 LD=$CC
-LDFLAGS="@SHARED@ -L@LIBDIR@"
+LDFLAGS="@IVCTARGETFLAGS@ @SHARED@ -L@LIBDIR@"
 LDLIBS="-lveriuser$SUFFIX -lvpi$SUFFIX"

 CCSRC=
@@ -63,6 +63,7 @@ ivl_expr_file
 ivl_expr_lineno
 ivl_expr_name
 ivl_expr_nature
+ivl_expr_net_type
 ivl_expr_opcode
 ivl_expr_oper1
 ivl_expr_oper2
@@ -70,6 +71,7 @@ ivl_expr_oper3
 ivl_expr_parameter
 ivl_expr_parm
 ivl_expr_parms
+ivl_expr_property_idx
 ivl_expr_repeat
 ivl_expr_scope
 ivl_expr_sel_type
@@ -139,7 +141,9 @@ ivl_lpm_width

 ivl_lval_idx
 ivl_lval_mux
+ivl_lval_nest
 ivl_lval_part_off
+ivl_lval_property_idx
 ivl_lval_sel_type
 ivl_lval_sig
 ivl_lval_width
@@ -166,6 +170,12 @@ ivl_parameter_basename
 ivl_parameter_expr
 ivl_parameter_file
 ivl_parameter_lineno
+ivl_parameter_local
+ivl_parameter_lsb
+ivl_parameter_msb
+ivl_parameter_scope
+ivl_parameter_signed
+ivl_parameter_width

 ivl_path_condit
 ivl_path_delay
@@ -175,10 +185,23 @@ ivl_path_source
 ivl_path_source_negedge
 ivl_path_source_posedge

+ivl_process_analog
+ivl_process_attr_cnt
+ivl_process_attr_val
+ivl_process_file
+ivl_process_lineno
+ivl_process_scope
+ivl_process_stmt
+ivl_process_type
+
 ivl_scope_attr_cnt
 ivl_scope_attr_val
 ivl_scope_basename
 ivl_scope_children
+ivl_scope_child
+ivl_scope_childs
+ivl_scope_class
+ivl_scope_classes
 ivl_scope_def
 ivl_scope_def_file
 ivl_scope_def_lineno
@@ -194,6 +217,10 @@ ivl_scope_logs
 ivl_scope_log
 ivl_scope_lpms
 ivl_scope_lpm
+ivl_scope_mod_module_ports
+ivl_scope_mod_module_port_name
+ivl_scope_mod_module_port_type
+ivl_scope_mod_module_port_width
 ivl_scope_mod_port
 ivl_scope_name
 ivl_scope_param
@@ -228,8 +255,12 @@ ivl_signal_local
 ivl_signal_lsb
 ivl_signal_msb
 ivl_signal_name
+ivl_signal_net_type
 ivl_signal_nex
 ivl_signal_npath
+ivl_signal_packed_dimensions
+ivl_signal_packed_lsb
+ivl_signal_packed_msb
 ivl_signal_path
 ivl_signal_port
 ivl_signal_scope
@@ -237,18 +268,6 @@ ivl_signal_signed
 ivl_signal_type
 ivl_signal_width

-ivl_path_delay
-ivl_path_source
-
-ivl_process_analog
-ivl_process_attr_cnt
-ivl_process_attr_val
-ivl_process_file
-ivl_process_lineno
-ivl_process_scope
-ivl_process_stmt
-ivl_process_type
-
 ivl_statement_type

 ivl_stmt_block_count
@@ -272,6 +291,7 @@ ivl_stmt_lvals
 ivl_stmt_lwidth
 ivl_stmt_name
 ivl_stmt_nevent
+ivl_stmt_opcode
 ivl_stmt_parm
 ivl_stmt_parm_count
 ivl_stmt_rval
@@ -292,6 +312,17 @@ ivl_switch_scope
 ivl_switch_type
 ivl_switch_width

+ivl_type_base
+ivl_type_element
+ivl_type_name
+ivl_type_packed_dimensions
+ivl_type_packed_lsb
+ivl_type_packed_msb
+ivl_type_prop_name
+ivl_type_prop_type
+ivl_type_properties
+ivl_type_signed
+
 ivl_udp_init
 ivl_udp_file
 ivl_udp_lineno
@@ -1,7 +1,7 @@
-#ifndef __ivl_alloc_H
-#define __ivl_alloc_H
+#ifndef IVL_ivl_alloc_H
+#define IVL_ivl_alloc_H
 /*
- *  Copyright (C) 2010  Cary R. (cygcary@yahoo.com)
+ *  Copyright (C) 2010-2014  Cary R. (cygcary@yahoo.com)
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
@@ -83,4 +83,4 @@
      __ivl_rtn; \
 })

-#endif
+#endif /* IVL_ivl_alloc_H */
@@ -1,5 +1,7 @@
+#ifndef IVL_ivl_assert_H
+#define IVL_ivl_assert_H
 /*
- * Copyright (c) 2007-2010 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2007-2014 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -14,12 +16,9 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

-#ifndef __ivl_assert_h
-#define __ivl_assert_h
-
 # include  <cstdlib>

 #define ivl_assert(tok, expression)  \
@@ -32,4 +31,4 @@
 	    } \
      } while (0)

-#endif
+#endif /* IVL_ivl_assert_H */
@@ -1,7 +1,7 @@
-#ifndef __ivl_target_H
-#define __ivl_target_H
+#ifndef IVL_ivl_target_H
+#define IVL_ivl_target_H
 /*
- * Copyright (c) 2000-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2000-2014 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
@@ -16,17 +16,25 @@
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
- *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

 # include  <inttypes.h>
+# include  <stddef.h>
+
+/* Re the _CLASS define: clang++ wants this to be class to match the
+ * definition, but clang (the C) compiler needs it to be a struct
+ * since class is not defined in C. They are effectively both pointers
+ * to an object so everything works out. */

 #ifdef __cplusplus
 #define _BEGIN_DECL extern "C" {
 #define _END_DECL }
+#define _CLASS class
 #else
 #define _BEGIN_DECL
 #define _END_DECL
+#define _CLASS struct
 #endif

 #ifndef __GNUC__
@@ -157,21 +165,8 @@ typedef struct ivl_array_s    *ivl_array_t;
 typedef struct ivl_branch_s   *ivl_branch_t;
 typedef struct ivl_delaypath_s*ivl_delaypath_t;
 typedef struct ivl_design_s   *ivl_design_t;
-/* clang++ wants this to be class to match the definition, but clang
- * (the C) compiler needs it to be a struct since class is not defined
- * in C. They are effecively both pointers to an object so everything
- * works out. */
-#ifdef __cplusplus
-typedef class  ivl_discipline_s*ivl_discipline_t;
-#else
-typedef struct ivl_discipline_s*ivl_discipline_t;
-#endif
-/* See the comments above. */
-#ifdef __cplusplus
-typedef class  netenum_t      *ivl_enumtype_t;
-#else
-typedef struct netenum_t      *ivl_enumtype_t;
-#endif
+typedef _CLASS ivl_discipline_s*ivl_discipline_t;
+typedef const _CLASS netenum_t*ivl_enumtype_t;
 typedef struct ivl_event_s    *ivl_event_t;
 typedef struct ivl_expr_s     *ivl_expr_t;
 typedef struct ivl_island_s   *ivl_island_t;
@@ -180,12 +175,7 @@ typedef struct ivl_lval_s     *ivl_lval_t;
 typedef struct ivl_net_const_s*ivl_net_const_t;
 typedef struct ivl_net_logic_s*ivl_net_logic_t;
 typedef struct ivl_udp_s      *ivl_udp_t;
-/* See the comments above. */
-#ifdef __cplusplus
-typedef class  ivl_nature_s   *ivl_nature_t;
-#else
-typedef struct ivl_nature_s   *ivl_nature_t;
-#endif
+typedef _CLASS ivl_nature_s   *ivl_nature_t;
 typedef struct ivl_net_probe_s*ivl_net_probe_t;
 typedef struct ivl_nexus_s    *ivl_nexus_t;
 typedef struct ivl_nexus_ptr_s*ivl_nexus_ptr_t;
@@ -193,9 +183,11 @@ typedef struct ivl_parameter_s*ivl_parameter_t;
 typedef struct ivl_process_s  *ivl_process_t;
 typedef struct ivl_scope_s    *ivl_scope_t;
 typedef struct ivl_signal_s   *ivl_signal_t;
+typedef struct ivl_port_info_s*ivl_port_info_t;
 typedef struct ivl_switch_s   *ivl_switch_t;
 typedef struct ivl_memory_s   *ivl_memory_t; //XXXX __attribute__((deprecated));
 typedef struct ivl_statement_s*ivl_statement_t;
+typedef const _CLASS ivl_type_s*ivl_type_t;

 /*
 * These are types that are defined as enumerations. These have
@@ -233,11 +225,16 @@ typedef enum ivl_expr_type_e {
      IVL_EX_ENUMTYPE = 21,
      IVL_EX_EVENT  = 17,
      IVL_EX_MEMORY = 4,
+      IVL_EX_NEW    = 23,
+      IVL_EX_NULL   = 22,
      IVL_EX_NUMBER = 5,
+      IVL_EX_ARRAY_PATTERN  = 26,
+      IVL_EX_PROPERTY = 24,
      IVL_EX_REALNUM  = 16,
      IVL_EX_SCOPE  = 6,
      IVL_EX_SELECT = 7,
      IVL_EX_SFUNC  = 8,
+      IVL_EX_SHALLOWCOPY = 25,
      IVL_EX_SIGNAL = 9,
      IVL_EX_STRING = 10,
      IVL_EX_TERNARY = 11,
@@ -301,7 +298,10 @@ typedef enum ivl_lpm_type_e {
      IVL_LPM_CAST_INT2 = 35,
      IVL_LPM_CAST_REAL = 33,
      IVL_LPM_CONCAT = 16,
+      IVL_LPM_CONCATZ = 36, /* Transparent concat */
      IVL_LPM_CMP_EEQ= 18, /* Case EQ (===) */
+      IVL_LPM_CMP_EQX= 37, /* Windcard EQ (==?) */
+      IVL_LPM_CMP_EQZ= 38, /* casez EQ */
      IVL_LPM_CMP_EQ = 10,
      IVL_LPM_CMP_GE =  1,
      IVL_LPM_CMP_GT =  2,
@@ -328,6 +328,7 @@ typedef enum ivl_lpm_type_e {
      IVL_LPM_SHIFTR =  7,
      IVL_LPM_SIGN_EXT=27,
      IVL_LPM_SUB    =  8,
+      IVL_LPM_SUBSTITUTE=39,
      /* IVL_LPM_RAM =  9, / obsolete */
      IVL_LPM_UFUNC  = 14
 } ivl_lpm_type_t;
@@ -358,12 +359,14 @@ typedef enum ivl_scope_type_e {
      IVL_SCT_TASK    = 2,
      IVL_SCT_BEGIN   = 3,
      IVL_SCT_FORK    = 4,
-      IVL_SCT_GENERATE= 5
+      IVL_SCT_GENERATE= 5,
+      IVL_SCT_PACKAGE = 6,
+      IVL_SCT_CLASS   = 7
 } ivl_scope_type_t;

 /* Signals (ivl_signal_t) that are ports into the scope that contains
   them have a port type. Otherwise, they are port IVL_SIP_NONE. */
-typedef enum ivl_signal_port_e {
+typedef enum OUT {
      IVL_SIP_NONE  = 0,
      IVL_SIP_INPUT = 1,
      IVL_SIP_OUTPUT= 2,
@@ -403,9 +406,12 @@ typedef enum ivl_statement_type_e {
      IVL_ST_DELAY   = 11,
      IVL_ST_DELAYX  = 12,
      IVL_ST_DISABLE = 13,
+      IVL_ST_DO_WHILE = 30,
      IVL_ST_FORCE   = 14,
      IVL_ST_FOREVER = 15,
      IVL_ST_FORK    = 16,
+      IVL_ST_FORK_JOIN_ANY  = 28,
+      IVL_ST_FORK_JOIN_NONE = 29,
      IVL_ST_FREE    = 26,
      IVL_ST_RELEASE = 17,
      IVL_ST_REPEAT  = 18,
@@ -432,6 +438,9 @@ typedef enum ivl_variable_type_e {
      IVL_VT_BOOL    = 3,
      IVL_VT_LOGIC   = 4,
      IVL_VT_STRING  = 5,
+      IVL_VT_DARRAY  = 6,  /* Array (esp. dynamic array) */
+      IVL_VT_CLASS   = 7,  /* SystemVerilog class instances */
+      IVL_VT_QUEUE   = 8,  /* SystemVerilog queue instances */
      IVL_VT_VECTOR = IVL_VT_LOGIC /* For compatibility */
 } ivl_variable_type_t;

@@ -770,6 +779,11 @@ extern unsigned ivl_event_lineno(ivl_event_t net);
 *    Get the data type of the expression node. This uses the variable
 *    type enum to express the type of the expression node.
 *
+ * ivl_expr_net_type
+ *    This is used in some cases to carry more advanced type
+ *    descriptions. Over the long run, all type information will be
+ *    moved into the ivl_type_t type description method.
+ *
 * ivl_expr_width
 *    This method returns the bit width of the expression at this
 *    node. It can be applied to any expression node, and returns the
@@ -802,6 +816,36 @@ extern unsigned ivl_event_lineno(ivl_event_t net);
 *
 * - IVL_EX_BINARY
 *
+ * - IVL_EX_PROPERTY
+ * This expression represents the property select from a class
+ * type, for example "foo.property" where "foo" is a class handle and
+ * "property" is the name of one of the properties of the class. The
+ * ivl_expr_signal function returns the ivl_signal_t for "foo" and the
+ * data_type for the signal will be IVL_VT_CLASS.
+ *
+ * The ivl_signal_net_type(sig) for the "foo" signal will be a class
+ * type and from there you can get access to the type information.
+ *
+ * Elaboration reduces the properties of a class to a vector numbered
+ * from 0 to the number of properties. The ivl_expr_property_idx()
+ * function gets the index of the selected property into the property
+ * table. That number can be passed to ivl_type_prop_*() functions to
+ * get details about the property.
+ *
+ * If the property is an array, then the ivl_expr_oper1() function
+ * returns the canonical expression for accessing the element of the
+ * property.
+ *
+ * - IVL_EX_NEW
+ * This expression takes one or two operands. The first operand,
+ * returned by ivl_expr_oper1() is the number of elements to create
+ * for the dynamic array. The second operand, if present, is returned
+ * by the ivl_expr_oper2() function. If this returns a non-nil
+ * expression, it is the initial value to be written to the elements
+ * of the array. If the expression is an IVL_EX_ARRAY_PATTERN, then
+ * this is the very special case of a list of values to be written to
+ * array elements.
+ *
 * - IVL_EX_SELECT
 * This expression takes two operands, oper1 is the expression to
 * select from, and oper2 is the selection base. The ivl_expr_width
@@ -810,6 +854,14 @@ extern unsigned ivl_event_lineno(ivl_event_t net);
 * conversion from signal units to vector units, so the result of
 * ivl_expr_oper1 should range from 0 to ivl_expr_width().
 *
+ * This expression is also used to implement string substrings. If the
+ * sub-expression (oper1) is IVL_VT_STRING, then the base expression
+ * (oper2) is a character address, with 0 the first address of the
+ * string, 1 the second, and so on. This is OPPOSITE how a part select
+ * of a string cast to a vector works, to be aware. The size of the
+ * expression is an even multiple of 8, and is 8 times the number of
+ * characters to pick.
+ *
 * - IVL_EX_SIGNAL
 * This expression references a signal vector. The ivl_expr_signal
 * function gets a handle for the signal that is referenced. The
@@ -839,6 +891,7 @@ extern unsigned ivl_event_lineno(ivl_event_t net);
 */

 extern ivl_expr_type_t ivl_expr_type(ivl_expr_t net);
+extern ivl_type_t ivl_expr_net_type(ivl_expr_t net);
 extern ivl_variable_type_t ivl_expr_value(ivl_expr_t net);
 extern const char*ivl_expr_file(ivl_expr_t net);
 extern unsigned ivl_expr_lineno(ivl_expr_t net);
@@ -855,23 +908,23 @@ extern uint64_t ivl_expr_delay_val(ivl_expr_t net);
 extern double ivl_expr_dvalue(ivl_expr_t net);
  /* IVL_EX_ENUMTYPE */
 extern ivl_enumtype_t ivl_expr_enumtype(ivl_expr_t net);
-  /* IVL_EX_SIGNAL, IVL_EX_SFUNC, IVL_EX_VARIABLE */
+  /* IVL_EX_PROPERTY IVL_EX_SIGNAL IVL_EX_SFUNC IVL_EX_VARIABLE */
 extern const char* ivl_expr_name(ivl_expr_t net);
  /* IVL_EX_BACCESS */
 extern ivl_nature_t ivl_expr_nature(ivl_expr_t net);
  /* IVL_EX_BINARY IVL_EX_UNARY */
 extern char        ivl_expr_opcode(ivl_expr_t net);
-  /* IVL_EX_BINARY  IVL_EX_UNARY, IVL_EX_MEMORY IVL_EX_TERNARY */
+  /* IVL_EX_BINARY  IVL_EX_UNARY, IVL_EX_MEMORY IVL_EX_NEW IVL_EX_TERNARY */
 extern ivl_expr_t  ivl_expr_oper1(ivl_expr_t net);
-  /* IVL_EX_BINARY IVL_EX_TERNARY */
+  /* IVL_EX_BINARY IVL_EX_NEW IVL_EX_TERNARY */
 extern ivl_expr_t  ivl_expr_oper2(ivl_expr_t net);
  /* IVL_EX_TERNARY */
 extern ivl_expr_t  ivl_expr_oper3(ivl_expr_t net);
  /* and expression */
 extern ivl_parameter_t ivl_expr_parameter(ivl_expr_t net);
-  /* IVL_EX_CONCAT IVL_EX_UFUNC */
+  /* IVL_EX_ARRAY_PATTERN IVL_EX_CONCAT IVL_EX_UFUNC */
 extern ivl_expr_t  ivl_expr_parm(ivl_expr_t net, unsigned idx);
-  /* IVL_EX_CONCAT IVL_EX_SFUNC IVL_EX_UFUNC */
+  /* IVL_EX_ARRAY_PATTERN IVL_EX_CONCAT IVL_EX_SFUNC IVL_EX_UFUNC */
 extern unsigned    ivl_expr_parms(ivl_expr_t net);
  /* IVL_EX_CONCAT */
 extern unsigned    ivl_expr_repeat(ivl_expr_t net);
@@ -879,9 +932,11 @@ extern unsigned    ivl_expr_repeat(ivl_expr_t net);
 extern ivl_select_type_t ivl_expr_sel_type(ivl_expr_t net);
  /* IVL_EX_EVENT */
 extern ivl_event_t ivl_expr_event(ivl_expr_t net);
+  /* IVL_EX_PROPERTY */
+extern int ivl_expr_property_idx(ivl_expr_t net);
  /* IVL_EX_SCOPE */
 extern ivl_scope_t ivl_expr_scope(ivl_expr_t net);
-  /* IVL_EX_SIGNAL */
+  /* IVL_EX_PROPERTY IVL_EX_SIGNAL */
 extern ivl_signal_t ivl_expr_signal(ivl_expr_t net);
  /* any expression */
 extern int         ivl_expr_signed(ivl_expr_t net);
@@ -1218,7 +1273,7 @@ extern unsigned    ivl_lpm_lineno(ivl_lpm_t net);
 * width of the part. The ivl_lpm_q is the part end, and the
 * ivl_lpm_data(0) is the non-part end.
 *
- * - Comparisons (IVL_LPM_CMP_GT/GE/EQ/NE/EEQ/NEE)
+ * - Comparisons (IVL_LPM_CMP_GT/GE/EQ/NE/EEQ/NEE/EQX/EQZ)
 * These devices have two inputs, available by the ivl_lpm_data()
 * function, and one output available by the ivl_lpm_q function. The
 * output width is always 1, but the ivl_lpm_width() returns the width
@@ -1230,6 +1285,11 @@ extern unsigned    ivl_lpm_lineno(ivl_lpm_t net);
 * magnitude compare, the signedness does matter. In any case, the
 * result of the compare is always unsigned.
 *
+ * The EQX and EQZ nodes are windcard compares, where xz bits (EQX) or
+ * z bits (EQZ) in the data(1) operand are treated as windcards. no
+ * bits in the data(0) operand are wild. This matches the
+ * SystemVerilog convention for the ==? operator.
+ *
 * - Mux Device (IVL_LPM_MUX)
 * The MUX device has a q output, a select input, and a number of data
 * inputs. The ivl_lpm_q output and the ivl_lpm_data inputs all have
@@ -1279,7 +1339,7 @@ extern unsigned    ivl_lpm_lineno(ivl_lpm_t net);
 * repeated to get the desired width. The ivl core assures that the
 * input vector is exactly ivl_lpm_width() / ivl_lpm_size() bits.
 *
- * - Sign Exend (IVL_LPM_SIGN_EXT)
+ * - Sign Extend (IVL_LPM_SIGN_EXT)
 * This node takes a single input and generates a single output. The
 * input must be signed, and the output will be a vector sign extended
 * to the desired width. The ivl_lpm_width() value is the output
@@ -1355,7 +1415,7 @@ extern ivl_nexus_t ivl_lpm_sync_set(ivl_lpm_t net);
 extern ivl_expr_t  ivl_lpm_sset_value(ivl_lpm_t net);
  /* IVL_LPM_ARRAY */
 extern ivl_signal_t ivl_lpm_array(ivl_lpm_t net);
-  /* IVL_LPM_PART */
+  /* IVL_LPM_PART IVL_LPM_SUBSTITUTE */
 extern unsigned ivl_lpm_base(ivl_lpm_t net);
  /* IVL_LPM_FF */
 extern ivl_nexus_t ivl_lpm_clk(ivl_lpm_t net);
@@ -1365,12 +1425,14 @@ extern ivl_scope_t  ivl_lpm_define(ivl_lpm_t net);
 extern ivl_nexus_t ivl_lpm_enable(ivl_lpm_t net);
  /* IVL_LPM_ADD IVL_LPM_CONCAT IVL_LPM_FF IVL_LPM_PART IVL_LPM_MULT
     IVL_LPM_MUX IVL_LPM_POW IVL_LPM_SHIFTL IVL_LPM_SHIFTR IVL_LPM_SUB
-     IVL_LPM_UFUNC */
+     IVL_LPM_UFUNC IVL_LPM_SUBSTITUTE */
 extern ivl_nexus_t ivl_lpm_data(ivl_lpm_t net, unsigned idx);
-  /* IVL_LPM_ADD IVL_LPM_MULT IVL_LPM_POW IVL_LPM_SUB */
+  /* IVL_LPM_ADD IVL_LPM_MULT IVL_LPM_POW IVL_LPM_SUB IVL_LPM_CMP_EQ
+     IVL_LPM_CMP_EEQ IVL_LPM_CMP_EQX IVL_LPM_CMP_EQZ IVL_LPM_CMP_NEE */
 extern ivl_nexus_t ivl_lpm_datab(ivl_lpm_t net, unsigned idx);
  /* IVL_LPM_ADD IVL_LPM_FF IVL_LPM_MULT IVL_LPM_PART IVL_LPM_POW
-     IVL_LPM_SUB IVL_LPM_UFUNC */
+     IVL_LPM_SUB IVL_LPM_UFUNC IVL_LPM_CMP_EEQ IVL_LPM_CMP_EQX
+     IVL_LPM_CMP_EQZ IVL_LPM_CMP_NEE IVL_LPM_SUBSTITUTE */
 extern ivl_nexus_t ivl_lpm_q(ivl_lpm_t net);
 extern ivl_drive_t ivl_lpm_drive0(ivl_lpm_t net);
 extern ivl_drive_t ivl_lpm_drive1(ivl_lpm_t net);
@@ -1397,12 +1459,11 @@ extern const char*ivl_lpm_string(ivl_lpm_t net);
 *    for the local part selecting I might to in the lval object, as
 *    well as the target object width.
 *
- * ivl_lval_mux
- *    If the l-value includes a bit select expression, this method
- *    returns an ivl_expr_t that represents that
- *    expression.  Otherwise, it returns 0.
+ * ivl_lval_mux (* obsolete *)
 *
- *    (Should this be combined with ivl_lval_idx? -Ed)
+ * ivl_lval_nest
+ *    If the l-value is an object more complex than a variable, then
+ *    this returns the nested l-value (and ivl_lval_sig==0).
 *
 * ivl_lval_sig
 *    If the l-value is a variable, this method returns the signal
@@ -1419,6 +1480,11 @@ extern const char*ivl_lpm_string(ivl_lpm_t net);
 *    ivl_expr_t that represents the index expression.  Otherwise, it
 *    returns 0.
 *
+ * ivl_lval_property_idx
+ *    If the l-value is a class object, this is the name of a property
+ *    to select from the object. If this property is not present (<0)
+ *    then the l-value represents the class object itself.
+ *
 * SEMANTIC NOTES
 * The ivl_lval_width is not necessarily the same as the width of the
 * signal or memory word it represents. It is the width of the vector
@@ -1437,14 +1503,21 @@ extern const char*ivl_lpm_string(ivl_lpm_t net);
 * then the ivl_lval_idx expression must *not* be present.
 *
 * For array words, the ivl_lval_width is the width of the word.
+ *
+ * - Arrayed properties
+ * If the l-value is a class property, then the ivl_lval_idx function
+ * will return an expression if the property is in fact arrayed. The
+ * expression is the canonical index for elements in the property.
 */

 extern unsigned    ivl_lval_width(ivl_lval_t net);
-extern ivl_expr_t  ivl_lval_mux(ivl_lval_t net); /* XXXX Obsolete? */
+extern ivl_expr_t  ivl_lval_mux(ivl_lval_t net) __attribute__((deprecated)); /* XXXX Obsolete? */
 extern ivl_expr_t  ivl_lval_idx(ivl_lval_t net);
 extern ivl_expr_t  ivl_lval_part_off(ivl_lval_t net);
 extern ivl_select_type_t ivl_lval_sel_type(ivl_lval_t net);
+extern int ivl_lval_property_idx(ivl_lval_t net);
 extern ivl_signal_t ivl_lval_sig(ivl_lval_t net);
+extern ivl_lval_t  ivl_lval_nest(ivl_lval_t net);


 /* NEXUS
@@ -1566,6 +1639,22 @@ extern ivl_signal_t ivl_nexus_ptr_sig(ivl_nexus_ptr_t net);
 *    Return the value of the parameter. This should be a simple
 *    constant expression, an IVL_EX_STRING or IVL_EX_NUMBER.
 *
+ * ivl_parameter_msb
+ * ivl_parameter_lsb
+ *    Returns the MSB and LSB for the parameter. For a parameter without
+ *    a range the value is zero based and the width of the expression is
+ *    used to determine the MSB.
+ *
+ * ivl_parameter_width
+ *    return |MSB - LSB| + 1
+ *
+ * ivl_parameter_signed
+ *    Returns if the parameter was declared to be signed.
+ *
+ * ivl_parameter_local
+ *    Return whether parameter was local (localparam, implicit genvar etc)
+ *    or not.
+ *
 * ivl_parameter_file
 * ivl_parameter_lineno
 *    Returns the file and line where this parameter is defined
@@ -1573,9 +1662,13 @@ extern ivl_signal_t ivl_nexus_ptr_sig(ivl_nexus_ptr_t net);
 extern const char* ivl_parameter_basename(ivl_parameter_t net);
 extern ivl_scope_t ivl_parameter_scope(ivl_parameter_t net);
 extern ivl_expr_t  ivl_parameter_expr(ivl_parameter_t net);
-
+extern int         ivl_parameter_msb(ivl_parameter_t net);
+extern int         ivl_parameter_lsb(ivl_parameter_t net);
+extern unsigned    ivl_parameter_width(ivl_parameter_t net);
+extern int         ivl_parameter_signed(ivl_parameter_t net);
+extern int         ivl_parameter_local(ivl_parameter_t net);
 extern const char* ivl_parameter_file(ivl_parameter_t net);
-extern unsigned ivl_parameter_lineno(ivl_parameter_t net);
+extern unsigned    ivl_parameter_lineno(ivl_parameter_t net);


 /* SCOPE
@@ -1618,6 +1711,11 @@ extern unsigned ivl_parameter_lineno(ivl_parameter_t net);
 *    If the scope has no children, this method will return 0 and
 *    otherwise do nothing.
 *
+ * ivl_scope_childs
+ * ivl_scope_child
+ *    This is an alternative way of getting at the childs scopes of a
+ *    given scope.
+ *
 * ivl_scope_def
 *    Task definition scopes carry a task definition, in the form of
 *    a statement. This method accesses that definition. The
@@ -1719,6 +1817,10 @@ extern ivl_statement_t ivl_scope_def(ivl_scope_t net);
 extern const char* ivl_scope_def_file(ivl_scope_t net);
 extern unsigned ivl_scope_def_lineno(ivl_scope_t net);

+extern size_t      ivl_scope_childs(ivl_scope_t net);
+extern ivl_scope_t ivl_scope_child(ivl_scope_t net, size_t idx);
+extern unsigned   ivl_scope_classes(ivl_scope_t net);
+extern ivl_type_t ivl_scope_class(ivl_scope_t net, unsigned idx);
 extern unsigned       ivl_scope_enumerates(ivl_scope_t net);
 extern ivl_enumtype_t ivl_scope_enumerate(ivl_scope_t net, unsigned idx);
 extern unsigned     ivl_scope_events(ivl_scope_t net);
@@ -1736,6 +1838,12 @@ extern const char*  ivl_scope_basename(ivl_scope_t net);
 extern unsigned     ivl_scope_params(ivl_scope_t net);
 extern ivl_parameter_t ivl_scope_param(ivl_scope_t net, unsigned idx);
 extern ivl_scope_t  ivl_scope_parent(ivl_scope_t net);
+
+extern unsigned ivl_scope_mod_module_ports(ivl_scope_t net);
+extern const char *ivl_scope_mod_module_port_name(ivl_scope_t net, unsigned idx );
+extern ivl_signal_port_t ivl_scope_mod_module_port_type(ivl_scope_t net, unsigned idx );
+extern unsigned ivl_scope_mod_module_port_width(ivl_scope_t net, unsigned idx );
+
 extern unsigned     ivl_scope_ports(ivl_scope_t net);
 extern ivl_signal_t ivl_scope_port(ivl_scope_t net, unsigned idx);
 extern ivl_nexus_t  ivl_scope_mod_port(ivl_scope_t net, unsigned idx);
@@ -1785,13 +1893,23 @@ extern int          ivl_scope_time_units(ivl_scope_t net);
 *    If the signal has been declared with a domain (Verilog-AMS) then
 *    this function will return a non-nil ivl_discipline_t.
 *
- * ivl_signal_msb
- * ivl_signal_lsb
+ * ivl_signal_msb (deprecated)
+ * ivl_signal_lsb (deprecated)
+ * ivl_signal_packed_dimensions
+ * ivl_signal_packed_msb
+ * ivl_signal_packed_lsb
 * ivl_signal_width
- *    These functions return the left and right indices, respectively,
- *    of the signal. If the signal is a scalar, both return 0. However,
- *    it doesn't mean that the signal is a scalar if both return 0, one
- *    can have a vector with 0 as both indices.
+ *    These functions return the msb and lsb packed indices. The
+ *    packed dimensions are declared differently from array
+ *    dimensions, like so:
+ *       reg [4:1][7:0] sig...
+ *    which has two packed dimensions. The [4:1] dimension is the
+ *    first, and so forth. If the signal is a scalar, it has 0
+ *    dimension.
+ *
+ *    The ivl_signal_msb/ivl_signal_lsb functions are deprecated
+ *    versions that only work with variables that have less than two
+ *    dimensions. They will return msb==lsb==0 for scalars.
 *
 * ivl_signal_port
 *    If the signal is a port to a module, this function returns the
@@ -1859,10 +1977,14 @@ extern unsigned    ivl_signal_array_count(ivl_signal_t net);
 extern unsigned    ivl_signal_array_addr_swapped(ivl_signal_t net);
 extern unsigned    ivl_signal_dimensions(ivl_signal_t net);
 extern ivl_discipline_t ivl_signal_discipline(ivl_signal_t net);
-extern int         ivl_signal_msb(ivl_signal_t net);
-extern int         ivl_signal_lsb(ivl_signal_t net);
+extern unsigned    ivl_signal_packed_dimensions(ivl_signal_t net);
+extern int         ivl_signal_packed_msb(ivl_signal_t net, unsigned dim);
+extern int         ivl_signal_packed_lsb(ivl_signal_t net, unsigned dim);
+extern int         ivl_signal_msb(ivl_signal_t net) __attribute__((deprecated));
+extern int         ivl_signal_lsb(ivl_signal_t net) __attribute__((deprecated));
 extern unsigned    ivl_signal_width(ivl_signal_t net);
 extern ivl_signal_port_t ivl_signal_port(ivl_signal_t net);
+extern int         ivl_signal_module_port_index(ivl_signal_t net);
 extern int         ivl_signal_signed(ivl_signal_t net);
 extern int         ivl_signal_integer(ivl_signal_t net);
 extern int         ivl_signal_local(ivl_signal_t net);
@@ -1871,6 +1993,7 @@ extern unsigned    ivl_signal_npath(ivl_signal_t net);
 extern ivl_delaypath_t ivl_signal_path(ivl_signal_t net, unsigned idx);
 extern ivl_signal_type_t ivl_signal_type(ivl_signal_t net);
 extern ivl_variable_type_t ivl_signal_data_type(ivl_signal_t net);
+extern ivl_type_t  ivl_signal_net_type(ivl_signal_t net);
 extern const char* ivl_signal_name(ivl_signal_t net);
 extern const char* ivl_signal_basename(ivl_signal_t net);
 extern const char* ivl_signal_attr(ivl_signal_t net, const char*key);
@@ -1958,7 +2081,7 @@ extern unsigned ivl_stmt_lineno(ivl_statement_t net);
 *    Statements that have event arguments (TRIGGER and WAIT) make
 *    those event objects available through these methods.
 *
- * ivl_stmt_lval
+* ivl_stmt_lval
 * ivl_stmt_lvals
 *    Return the number of l-values for an assignment statement, or
 *    the specific l-value. If there is more than 1 l-value, then the
@@ -1995,6 +2118,13 @@ extern unsigned ivl_stmt_lineno(ivl_statement_t net);
 * the statement.) The ivl_stmt_delay_expr function returns the
 * expression for the delay, or nil if there is no delay expression.
 *
+ * The blocking assignment (IVL_ST_ASSIGN) may have an associated
+ * opcode, that can be extracted from ivl_stmt_opcode(). This opcode
+ * is the compressed operator used it statements like this:
+ *      foo += <expr>
+ * The ivl_stmt_opcode() returns null (0) if this is not a compressed
+ * assignment statement.
+ *
 * - IVL_ST_CASSIGN
 * This reflects a procedural continuous assignment to an l-value. The
 * l-value is the same as any other assignment (use ivl_stmt_lval).
@@ -2049,11 +2179,11 @@ extern unsigned ivl_stmt_lineno(ivl_statement_t net);
 * triggers. The statement waits even if the sub-statement is nul.
 */

-  /* IVL_ST_BLOCK, IVL_ST_FORK */
+  /* IVL_ST_BLOCK, IVL_ST_FORK, IVL_ST_FORK_JOIN_ANY, IVL_ST_FORK_JOIN_NONE */
 extern unsigned ivl_stmt_block_count(ivl_statement_t net);
-  /* IVL_ST_BLOCK, IVL_ST_FORK */
+  /* IVL_ST_BLOCK, IVL_ST_FORK, IVL_ST_FORK_JOIN_ANY, IVL_ST_FORK_JOIN_NONE */
 extern ivl_scope_t ivl_stmt_block_scope(ivl_statement_t net);
-  /* IVL_ST_BLOCK, IVL_ST_FORK */
+  /* IVL_ST_BLOCK, IVL_ST_FORK, IVL_ST_FORK_JOIN_ANY, IVL_ST_FORK_JOIN_NONE */
 extern ivl_statement_t ivl_stmt_block_stmt(ivl_statement_t net, unsigned i);
  /* IVL_ST_UTASK IVL_ST_DISABLE */
 extern ivl_scope_t ivl_stmt_call(ivl_statement_t net);
@@ -2088,6 +2218,8 @@ extern unsigned ivl_stmt_lvals(ivl_statement_t net);
 extern unsigned ivl_stmt_lwidth(ivl_statement_t net);
  /* IVL_ST_STASK */
 extern const char* ivl_stmt_name(ivl_statement_t net);
+  /* IVL_ST_ASSIGN */
+extern char ivl_stmt_opcode(ivl_statement_t net);
  /* IVL_ST_STASK */
 extern ivl_expr_t ivl_stmt_parm(ivl_statement_t net, unsigned idx);
  /* IVL_ST_STASK */
@@ -2150,6 +2282,36 @@ extern ivl_attribute_t ivl_switch_attr_val(ivl_switch_t net, unsigned idx);
 extern const char* ivl_switch_file(ivl_switch_t net);
 extern unsigned ivl_switch_lineno(ivl_switch_t net);

+/* TYPES
+ *
+ * ivl_type_base
+ *    This returns the base type for the type. See the
+ *    ivl_variable_type_t definition for the various base types.
+ *
+ * ivl_type_element
+ *    Return the type of the element of an array. This is only valid
+ *    for array types.
+ *
+ * ivl_type_signed
+ *    Return TRUE if the type represents a signed packed vector or
+ *    signed atomic type, and FALSE otherwise.
+ *
+ * SEMANTIC NOTES
+ *
+ * Class types have names and properties.
+ */
+extern ivl_variable_type_t ivl_type_base(ivl_type_t net);
+extern ivl_type_t ivl_type_element(ivl_type_t net);
+extern unsigned ivl_type_packed_dimensions(ivl_type_t net);
+extern int ivl_type_packed_lsb(ivl_type_t net, unsigned dim);
+extern int ivl_type_packed_msb(ivl_type_t net, unsigned dim);
+extern int ivl_type_signed(ivl_type_t net);
+extern const char* ivl_type_name(ivl_type_t net);
+extern int         ivl_type_properties(ivl_type_t net);
+extern const char* ivl_type_prop_name(ivl_type_t net, int idx);
+extern ivl_type_t  ivl_type_prop_type(ivl_type_t net, int idx);
+
+
 #if defined(__MINGW32__) || defined (__CYGWIN32__)
 #  define DLLEXPORT __declspec(dllexport)
 #else
@@ -2180,4 +2342,4 @@ typedef const char* (*target_query_f) (const char*key);

 _END_DECL

-#endif
+#endif /* IVL_ivl_target_H */
--- a/Show More
+++ b/Show More