Add missing vpiModule handle code.

Most named objects should have a vpiModule handle to get a handle
to the enclosing module. This patch adds code to get this for all
the elements that I could find that needed it.

It also adds a three more names to vpi_get_str(vpiType, ...) and
fixes a problem in the vpiLeftRange for PV signals.

vvp/array.cc

@@ -387,6 +387,9 @@ static vpiHandle vpi_array_get_handle(int code, vpiHandle ref)
 
 	  case vpiScope:
 	    return &obj->scope->base;
+
+	  case vpiModule:
+	    return vpip_module(obj->scope);
       }
 
       return 0;
@@ -529,6 +532,9 @@ static vpiHandle vpi_array_var_word_get_handle(int code, vpiHandle ref)
 
 	  case vpiScope:
 	    return &parent->scope->base;
+
+	  case vpiModule:
+	    return vpip_module(parent->scope);
       }
 
       return 0;
@@ -720,6 +726,9 @@ static vpiHandle vpi_array_vthr_A_get_handle(int code, vpiHandle ref)
 
 	  case vpiScope:
 	    return &parent->scope->base;
+
+	  case vpiModule:
+	    return vpip_module(parent->scope);
       }
 
       return 0;

vvp/vpi_const.cc

@@ -291,6 +291,9 @@ static vpiHandle string_param_handle(int code, vpiHandle obj)
 	  case vpiScope:
 	    return &rfp->scope->base;
 
+	  case vpiModule:
+	    return vpip_module(rfp->scope);
+
 	  default:
 	    return 0;
       }
@@ -492,6 +495,9 @@ static vpiHandle binary_param_handle(int code, vpiHandle obj)
 	  case vpiScope:
 	    return &rfp->scope->base;
 
+	  case vpiModule:
+	    return vpip_module(rfp->scope);
+
 	  default:
 	    return 0;
       }
@@ -745,6 +751,9 @@ static vpiHandle real_param_handle(int code, vpiHandle obj)
           case vpiScope:
             return &rfp->scope->base;
 
+	  case vpiModule:
+	    return vpip_module(rfp->scope);
+
           default:
             return 0;
       }

vvp/vpi_event.cc

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002-2007 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2002-2009 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
@@ -61,9 +61,11 @@ static vpiHandle named_event_get_handle(int code, vpiHandle ref)
       struct __vpiNamedEvent*obj = (struct __vpiNamedEvent*)ref;
 
       switch (code) {
-
 	  case vpiScope:
 	    return &obj->scope->base;
+
+	  case vpiModule:
+	    return vpip_module(obj->scope);
       }
 
       return 0;

vvp/vpi_priv.cc

@@ -66,6 +66,15 @@ struct __vpiScope* vpip_scope(__vpiRealVar*sig)
 	    return sig->within.scope;
 }
 
+vpiHandle vpip_module(struct __vpiScope*scope)
+{
+      while(scope && scope->base.vpi_type->type_code != vpiModule) {
+	    scope = scope->scope;
+      }
+      assert(scope);
+      return &scope->base;
+}
+
 const char *vpip_string(const char*str)
 {
       static vpip_string_chunk first_chunk = {0, {0}};
@@ -218,6 +227,12 @@ static const char* vpi_type_values(PLI_INT32 code)
 	    return "vpiMemoryWord";
 	  case vpiModule:
 	    return "vpiModule";
+	  case vpiNamedBegin:
+	    return "vpiNamedBegin";
+	  case vpiNamedEvent:
+	    return "vpiNamedEvent";
+	  case vpiNamedFork:
+	    return "vpiNamedFork";
 	  case vpiNet:
 	    return "vpiNet";
 	  case vpiParameter:

vvp/vpi_priv.h

@@ -595,4 +595,7 @@ extern char *need_result_buf(unsigned cnt, vpi_rbuf_t type);
 extern char *simple_set_rbuf_str(const char *s1);
 extern char *generic_get_str(int code, vpiHandle ref, const char *name, const char *index);
 
+/* A routine to find the enclosing module. */
+extern vpiHandle vpip_module(struct __vpiScope*scope);
+
 #endif

vvp/vpi_real.cc

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003-2008 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2003-2009 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
@@ -103,6 +103,9 @@ static vpiHandle real_var_get_handle(int code, vpiHandle ref)
 
 	  case vpiScope:
 	    return &(vpip_scope(rfp)->base);
+
+	  case vpiModule:
+	    return vpip_module(vpip_scope(rfp));
       }
 
       return 0;

vvp/vpi_signal.cc

@@ -596,13 +596,7 @@ static vpiHandle signal_get_handle(int code, vpiHandle ref)
 	    return &(vpip_scope(rfp)->base);
 
 	  case vpiModule:
-	      { struct __vpiScope*scope = vpip_scope(rfp);
+	    return vpip_module(vpip_scope(rfp));
-	        while (scope && scope->base.vpi_type->type_code != vpiModule)
-		      scope = scope->scope;
-
-		assert(scope);
-		return &scope->base;
-	      }
       }
 
       return 0;
@@ -977,7 +971,7 @@ static int PV_get(int code, vpiHandle ref)
 	    return rfp->sbase == 0 && rfp->twid == 0;
 
 	case vpiLeftRange:
-            rval += rfp->width;
+            rval += rfp->width - 1;
 	case vpiRightRange:
 	    rval += vpi_get(vpiRightRange, rfp->parent) + PV_get_base(rfp);
 	    return rval;
@@ -1129,10 +1123,11 @@ static vpiHandle PV_get_handle(int code, vpiHandle ref)
       struct __vpiPV*rfp = (struct __vpiPV*)ref;
 
       switch (code) {
-
 	  case vpiParent:
 	    return rfp->parent;
-	    break;
+
+	  case vpiModule:
+	    return vpi_handle(vpiModule, rfp->parent);
       }
 
       return 0;

vvp/vpi_tasks.cc

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001-2008 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2001-2009 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
@@ -62,6 +62,7 @@ static vpiHandle systask_handle(int type, vpiHandle ref)
       switch (type) {
 	  case vpiScope:
 	    return &rfp->scope->base;
+
 	  default:
 	    return 0;
       };
@@ -75,8 +76,13 @@ static int systask_get(int type, vpiHandle ref)
 	     || (ref->vpi_type->type_code == vpiSysFuncCall));
 
       switch (type) {
+	    /* This is not the correct way to get this information, but
+	     * some of the code that implements the acc and tf routines
+	     * use this method so we will keep it in for now. */
 	  case vpiTimeUnit:
 	    return rfp->scope->time_units;
+	  case vpiTimePrecision:
+	    return rfp->scope->time_precision;
 
 	  case vpiLineNo:
 	    return rfp->lineno;