From 45fbf558065c0fdac9aa088ecd34e9bf49e81305 Mon Sep 17 00:00:00 2001
From: Cary R <cygcary@yahoo.com>
Date: Sat, 14 May 2016 10:33:37 -0700
Subject: [PATCH] Add basic support for parameters using typedefs

---
 parse.y  |  5 +++++
 pform.cc | 22 ++++++++++++++++++++++
 pform.h  |  7 +++++++
 3 files changed, 34 insertions(+)

diff --git a/parse.y b/parse.y
index e3a592fa6..b7a523963 100644
--- a/parse.y
+++ b/parse.y
@@ -5183,6 +5183,11 @@ param_type
 	param_active_signed = true;
 	param_active_type = IVL_VT_BOOL;
       }
+  | TYPE_IDENTIFIER
+      { pform_set_param_from_type(@1, $1.type, $1.text, param_active_range,
+	                          param_active_signed, param_active_type);
+	delete[]$1.text;
+      }
   ;
 
   /* parameter and localparam assignment lists are broken into
diff --git a/pform.cc b/pform.cc
index 8ed8c8dae..a09925761 100644
--- a/pform.cc
+++ b/pform.cc
@@ -3173,6 +3173,28 @@ void pform_set_defparam(const pform_name_t&name, PExpr*expr)
             pform_cur_module.front()->defparms.push_back(make_pair(name,expr));
 }
 
+void pform_set_param_from_type(const struct vlltype&loc,
+                               const data_type_t *data_type,
+                               const char *name,
+                               list<pform_range_t> *&param_range,
+                               bool &param_signed,
+                               ivl_variable_type_t &param_type)
+{
+      if (const vector_type_t *vec = dynamic_cast<const vector_type_t*> (data_type)) {
+	    param_range = vec->pdims.get();
+	    param_signed = vec->signed_flag;
+	    param_type = vec->base_type;
+	    return;
+      }
+
+      param_range = 0;
+      param_signed = false;
+      param_type = IVL_VT_NO_TYPE;
+      cerr << loc.get_fileline() << ": sorry: cannot currently create a "
+              "parameter of type '" << name << "' which was defined at: "
+           << data_type->get_fileline() <<  "." << endl;
+      error_count += 1;
+}
 /*
  * Specify paths.
  */
diff --git a/pform.h b/pform.h
index e6e2db539..e9d553127 100644
--- a/pform.h
+++ b/pform.h
@@ -424,6 +424,13 @@ extern void pform_set_specparam(const struct vlltype&loc,
 				 PExpr*expr);
 extern void pform_set_defparam(const pform_name_t&name, PExpr*expr);
 
+extern void pform_set_param_from_type(const struct vlltype&loc,
+                                      const data_type_t *data_type,
+                                      const char *name,
+                                      list<pform_range_t> *&param_range,
+                                      bool &param_signed,
+                                      ivl_variable_type_t &param_type);
+
 /*
  * Functions related to specify blocks.
  */