Internals: Misc cleanups related to V3LinkDot. No functional change intended.

src/V3Ast.h

@@ -1966,7 +1966,7 @@ class AstNodeFTaskRef : public AstNode {
 private:
     AstNodeFTask*	m_taskp;	// [AfterLink] Pointer to task referenced
     string		m_name;		// Name of variable
-    string		m_dotted;	// Dotted part of scope to task or ""
+    string              m_dotted;       // Dotted part of scope the name()ed task/func is under or ""
     string		m_inlinedDots;	// Dotted hierarchy flattened out
     AstPackage*		m_packagep;	// Package hierarchy
 public:

src/V3AstNodes.cpp

@@ -1024,7 +1024,7 @@ void AstVarXRef::dump(ostream& str) {
     if (packagep()) { str<<" pkg="<<(void*)packagep(); }
     if (lvalue()) str<<" [LV] => ";
     else          str<<" [RV] <- ";
-    str<<dotted()<<". - ";
+    str<<".="<<dotted()<<" ";
     if (inlinedDots()!="") str<<" inline.="<<inlinedDots()<<" - ";
     if (varScopep()) { varScopep()->dump(str); }
     else if (varp()) { varp()->dump(str); }
@@ -1095,7 +1095,7 @@ void AstNodeFTaskRef::dump(ostream& str) {
     this->AstNode::dump(str);
     if (packagep()) { str<<" pkg="<<(void*)packagep(); }
     str<<" -> ";
-    if (dotted()!="") { str<<dotted()<<". - "; }
+    if (dotted()!="") { str<<".="<<dotted()<<" "; }
     if (taskp()) { taskp()->dump(str); }
     else { str<<"UNLINKED"; }
 }

src/V3AstNodes.h

@@ -1484,7 +1484,7 @@ class AstVarXRef : public AstNodeVarRef {
     // A VarRef to something in another module before AstScope.
     // Includes pin on a cell, as part of a ASSIGN statement to connect I/Os until AstScope
 private:
-    string	m_dotted;	// Scope name to connected to
+    string      m_dotted;       // Dotted part of scope the name()'ed reference is under or ""
     string	m_inlinedDots;	// Dotted hierarchy flattened out
 public:
     AstVarXRef(FileLine* fl, const string& name, const string& dotted, bool lvalue)

src/V3Inline.cpp

@@ -42,6 +42,7 @@
 #include "V3Inst.h"
 #include "V3Stats.h"
 #include "V3Ast.h"
+#include "V3String.h"
 
 // CONFIG
 static const int INLINE_MODS_SMALLER = 100;	// If a mod is < this # nodes, can always inline it
@@ -270,14 +271,14 @@ public:
 
 class InlineRelinkVisitor : public AstNVisitor {
 private:
-    typedef vl_unordered_set<string> RenamedInterfacesSet;
+    typedef vl_unordered_set<string> StringSet;
 
     // NODE STATE
     //  Input:
     //   See InlineVisitor
 
     // STATE
-    RenamedInterfacesSet m_renamedInterfaces;	// Name of renamed interface variables
+    StringSet           m_renamedInterfaces;  // Name of renamed interface variables
     AstNodeModule*	m_modp;		// Current module
     AstCell*		m_cellp;	// Cell being cloned
 
@@ -410,9 +411,8 @@ private:
     }
     virtual void visit(AstVarXRef* nodep) {
 	// Track what scope it was originally under so V3LinkDot can resolve it
-	string newname = m_cellp->name();
-	if (nodep->inlinedDots() != "") { newname += "." + nodep->inlinedDots(); }
-	nodep->inlinedDots(newname);
+        string newdots = VString::dot(m_cellp->name(), ".", nodep->inlinedDots());
+        nodep->inlinedDots(newdots);
         for (string tryname = nodep->dotted(); 1;) {
             if (m_renamedInterfaces.count(tryname)) {
                 nodep->dotted(m_cellp->name() + "__DOT__" + nodep->dotted());
@@ -430,9 +430,8 @@ private:
     }
     virtual void visit(AstNodeFTaskRef* nodep) {
 	// Track what scope it was originally under so V3LinkDot can resolve it
-	string newname = m_cellp->name();
-	if (nodep->inlinedDots() != "") { newname += "." + nodep->inlinedDots(); }
-	nodep->inlinedDots(newname);
+        string newdots = VString::dot(m_cellp->name(), ".", nodep->inlinedDots());
+        nodep->inlinedDots(newdots);
 	if (m_renamedInterfaces.count(nodep->dotted())) {
 	    nodep->dotted(m_cellp->name() + "__DOT__" + nodep->dotted());
 	}
@@ -459,9 +458,7 @@ private:
     }
     virtual void visit(AstCoverDecl* nodep) {
 	// Fix path in coverage statements
-	nodep->hier(m_cellp->prettyName()
-		    + (nodep->hier()!="" ? ".":"")
-		    + nodep->hier());
+        nodep->hier(VString::dot(m_cellp->prettyName(), ".", nodep->hier()));
 	nodep->iterateChildren(*this);
     }
     virtual void visit(AstNode* nodep) {

src/V3LinkDot.cpp

@@ -78,6 +78,7 @@
 #include "V3Graph.h"
 #include "V3Ast.h"
 #include "V3ParseImp.h"
+#include "V3String.h"
 
 //######################################################################
 // LinkDot state, as a visitor of each AstNode
@@ -1807,8 +1808,7 @@ private:
 		       || foundp->nodep()->castModule()) {  // if top
 		if (allowScope) {
 		    ok = true;
-		    if (m_ds.m_dotText!="") m_ds.m_dotText += ".";
-		    m_ds.m_dotText += nodep->name();
+                    m_ds.m_dotText = VString::dot(m_ds.m_dotText, ".", nodep->name());
 		    m_ds.m_dotSymp = foundp;
 		    m_ds.m_dotPos = DP_SCOPE;
 		    // Upper AstDot visitor will handle it from here
@@ -1827,8 +1827,7 @@ private:
                         if (!ifaceRefVarp) nodep->v3fatalSrc("Can't find interface var ref: "<<findName);
                         //
                         ok = true;
-                        if (m_ds.m_dotText!="") m_ds.m_dotText += ".";
-                        m_ds.m_dotText += nodep->name();
+                        m_ds.m_dotText = VString::dot(m_ds.m_dotText, ".", nodep->name());
                         m_ds.m_dotSymp = foundp;
                         m_ds.m_dotPos = DP_SCOPE;
                         UINFO(9," cell -> iface varref "<<foundp->nodep()<<endl);
@@ -1845,8 +1844,7 @@ private:
 		    if (!ifacerefp->ifaceViaCellp()) ifacerefp->v3fatalSrc("Unlinked interface");
 		    // Really this is a scope reference into an interface
 		    UINFO(9,"varref-ifaceref "<<m_ds.m_dotText<<"  "<<nodep<<endl);
-		    if (m_ds.m_dotText!="") m_ds.m_dotText += ".";
-		    m_ds.m_dotText += nodep->name();
+                    m_ds.m_dotText = VString::dot(m_ds.m_dotText, ".", nodep->name());
 		    m_ds.m_dotSymp = m_statep->getNodeSym(ifacerefp->ifaceViaCellp());
 		    m_ds.m_dotPos = DP_SCOPE;
 		    ok = true;
@@ -1897,8 +1895,7 @@ private:
 		    if (!cellp) nodep->v3fatalSrc("Modport not referenced from a cell");
 		    AstIface* ifacep = cellp->modp()->castIface();
 		    //string cellName = m_ds.m_dotText;   // Use cellp->name
-		    if (m_ds.m_dotText!="") m_ds.m_dotText += ".";
-		    m_ds.m_dotText += nodep->name();
+                    m_ds.m_dotText = VString::dot(m_ds.m_dotText, ".", nodep->name());
 		    m_ds.m_dotSymp = m_statep->getNodeSym(modportp);
 		    m_ds.m_dotPos = DP_SCOPE;
 		    ok = true;

src/V3String.cpp

@@ -69,6 +69,12 @@ bool VString::wildmatch(const char* s, const char* p) {
     return (*s == '\0');
 }
 
+string VString::dot(const string& a, const string& dot, const string& b) {
+    if (b=="") return a;
+    if (a=="") return b;
+    return a+dot+b;
+}
+
 string VString::downcase(const string& str) {
     string out = str;
     for (string::iterator pos = out.begin(); pos != out.end(); ++pos) {

src/V3String.h

@@ -33,8 +33,13 @@ class VString {
     static bool wildmatchi(const char* s, const char* p);
 public:
     // METHODS (generic string utilities)
+    // Return true if p with ? or *'s matches s
     static bool wildmatch(const char* s, const char* p);
+    // Return {a}{dot}{b}, omitting dot if a or b are empty
+    static string dot(const string& a, const string& dot, const string& b);
+    // Convert string to lowercase
     static string downcase(const string& str);
+    // Replace any %'s with %%
     static string quotePercent(const string& str);
 };
 

src/V3SymTable.h

@@ -71,6 +71,7 @@ public:
 	os<<indent<<"+ "<<left<<setw(30)<<(searchName==""?"\"\"":searchName)<<setw(0)<<right;
 	os<<"  se"<<(void*)(this)<<setw(0);
 	os<<"  fallb=se"<<(void*)(m_fallbackp);
+        if (m_symPrefix!="") os<<"  symPrefix="<<m_symPrefix;
 	os<<"  n="<<nodep();
 	os<<endl;
 	if (doneSymsr.find(this) != doneSymsr.end()) {