mirror of
https://github.com/verilator/verilator.git
synced 2026-10-06 01:54:01 +02:00
Internals: Move iterators to AstNVisitor to avoid null this.
This commit is contained in:
Wilson Snyder
+59
-59
@@ -653,7 +653,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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m_statep->insertDUnit(nodep);
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// First back iterate, to find all packages. Backward as must do base packages before using packages
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nodep->iterateChildrenBackwards(*this);
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iterateChildrenBackwards(nodep);
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// The first module in the list is always the top module (sorted before this is called).
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// This may not be the module with isTop() set, as early in the steps,
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@@ -666,7 +666,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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m_scope = "TOP";
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m_curSymp = m_modSymp = m_statep->insertTopCell(topmodp, m_scope);
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{
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topmodp->accept(*this);
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iterate(topmodp);
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}
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m_scope = "";
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m_curSymp = m_modSymp = NULL;
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@@ -712,7 +712,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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// m_modSymp/m_curSymp for non-packages set by AstCell above this module
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// Iterate
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nodep->user2(true);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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nodep->user2(false);
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nodep->user4(true);
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// Interfaces need another pass when signals are resolved
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@@ -741,7 +741,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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UINFO(5," CELL under "<<m_scope<<" is "<<nodep<<endl);
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// Process XREFs/etc inside pins
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if (nodep->recursive() && m_inRecursion) return;
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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// Recurse in, preserving state
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string oldscope = m_scope;
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AstBegin* oldbeginp = m_beginp;
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@@ -769,7 +769,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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m_beginp = NULL;
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m_inRecursion = nodep->recursive();
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// We don't report NotFoundModule, as may be a unused module in a generate
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if (nodep->modp()) nodep->modp()->accept(*this);
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if (nodep->modp()) iterate(nodep->modp());
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}
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m_scope = oldscope;
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m_beginp = oldbeginp;
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@@ -800,7 +800,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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}
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virtual void visit(AstDefParam* nodep) {
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nodep->user1p(m_curSymp);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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virtual void visit(AstGenerate* nodep) {
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// Begin: ... blocks often replicate under genif/genfor, so simply suppress duplicate checks
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@@ -808,7 +808,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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bool lastInGen = m_inGenerate;
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{
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m_inGenerate = true;
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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m_inGenerate = lastInGen;
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}
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@@ -848,7 +848,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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m_curSymp = m_statep->insertBlock(m_curSymp, nodep->name(), nodep, m_packagep);
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m_curSymp->fallbackp(oldCurSymp);
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// Iterate
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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m_curSymp = oldCurSymp;
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m_beginp = oldbegin;
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@@ -884,7 +884,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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m_statep->insertSym(m_curSymp, newvarp->name(), newvarp, NULL/*packagep*/);
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}
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m_ftaskp = nodep;
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_ftaskp = NULL;
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}
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m_curSymp = oldCurSymp;
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@@ -892,7 +892,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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virtual void visit(AstVar* nodep) {
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// Var: Remember its name for later resolution
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if (!m_curSymp || !m_modSymp) nodep->v3fatalSrc("Var not under module?");
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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if (!m_statep->forScopeCreation()) {
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// Find under either a task or the module's vars
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VSymEnt* foundp = m_curSymp->findIdFallback(nodep->name());
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@@ -976,12 +976,12 @@ class LinkDotFindVisitor : public AstNVisitor {
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virtual void visit(AstTypedef* nodep) {
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// Remember its name for later resolution
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if (!m_curSymp) nodep->v3fatalSrc("Typedef not under module?");
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_statep->insertSym(m_curSymp, nodep->name(), nodep, m_packagep);
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}
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virtual void visit(AstParamTypeDType* nodep) {
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if (!m_curSymp) nodep->v3fatalSrc("Parameter type not under module?");
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_statep->insertSym(m_curSymp, nodep->name(), nodep, m_packagep);
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}
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virtual void visit(AstCFunc* nodep) {
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@@ -990,7 +990,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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}
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virtual void visit(AstEnumItem* nodep) {
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// EnumItem: Remember its name for later resolution
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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// Find under either a task or the module's vars
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VSymEnt* foundp = m_curSymp->findIdFallback(nodep->name());
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if (!foundp && m_modSymp && nodep->name() == m_modSymp->nodep()->name()) foundp = m_modSymp; // Conflicts with modname?
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@@ -1052,7 +1052,7 @@ class LinkDotFindVisitor : public AstNVisitor {
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virtual void visit(AstNode* nodep) {
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// Default: Just iterate
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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public:
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@@ -1070,7 +1070,7 @@ public:
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m_beginNum = 0;
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m_modBeginNum = 0;
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//
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rootp->accept(*this);
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iterate(rootp);
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}
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virtual ~LinkDotFindVisitor() {}
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};
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@@ -1127,7 +1127,7 @@ private:
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nodep->dead(true);
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} else {
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m_modp = nodep;
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_modp = NULL;
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}
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}
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@@ -1140,7 +1140,7 @@ private:
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}
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}
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virtual void visit(AstDefParam* nodep) {
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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nodep->v3warn(DEFPARAM,"Suggest replace defparam with Verilog 2001 #(."<<nodep->prettyName()<<"(...etc...))");
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VSymEnt* foundp = m_statep->getNodeSym(nodep)->findIdFallback(nodep->path());
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AstCell* cellp = foundp ? VN_CAST(foundp->nodep(), Cell) : NULL;
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@@ -1184,7 +1184,7 @@ private:
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// We used to nodep->allowImplicit() here, but it turns out
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// normal "assigns" can also make implicit wires. Yuk.
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pinImplicitExprRecurse(nodep->lhsp());
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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virtual void visit(AstAssignAlias* nodep) {
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// tran gates need implicit creation
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@@ -1196,7 +1196,7 @@ private:
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if (AstVarRef* forrefp = VN_CAST(nodep->rhsp(), VarRef)) {
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pinImplicitExprRecurse(forrefp);
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}
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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virtual void visit(AstImplicit* nodep) {
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// Unsupported gates need implicit creation
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@@ -1206,7 +1206,7 @@ private:
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}
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virtual void visit(AstNode* nodep) {
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// Default: Just iterate
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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public:
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@@ -1216,7 +1216,7 @@ public:
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m_statep = statep;
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m_modp = NULL;
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//
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rootp->accept(*this);
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iterate(rootp);
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}
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virtual ~LinkDotParamVisitor() {}
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};
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@@ -1236,7 +1236,7 @@ class LinkDotScopeVisitor : public AstNVisitor {
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// VISITs
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virtual void visit(AstNetlist* nodep) {
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// Recurse..., backward as must do packages before using packages
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nodep->iterateChildrenBackwards(*this);
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iterateChildrenBackwards(nodep);
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}
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virtual void visit(AstScope* nodep) {
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UINFO(8," SCOPE "<<nodep<<endl);
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@@ -1245,7 +1245,7 @@ class LinkDotScopeVisitor : public AstNVisitor {
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// up with the hierarchy created by the CELL names.
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m_modSymp = m_statep->getScopeSym(nodep);
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m_scopep = nodep;
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_modSymp = NULL;
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m_scopep = NULL;
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}
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@@ -1289,7 +1289,7 @@ class LinkDotScopeVisitor : public AstNVisitor {
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AstVarScope* toVscp = VN_CAST(nodep->rhsp(), VarRef)->varScopep();
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if (!fromVscp || !toVscp) nodep->v3fatalSrc("Bad alias scopes");
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fromVscp->user2p(toVscp);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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virtual void visit(AstAssignVarScope* nodep) {
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UINFO(5,"ASSIGNVARSCOPE "<<nodep<<endl);
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@@ -1341,7 +1341,7 @@ class LinkDotScopeVisitor : public AstNVisitor {
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virtual void visit(AstNodeMath*) {}
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virtual void visit(AstNode* nodep) {
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// Default: Just iterate
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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public:
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@@ -1352,7 +1352,7 @@ public:
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m_scopep = NULL;
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m_statep = statep;
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//
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rootp->accept(*this);
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iterate(rootp);
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}
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virtual ~LinkDotScopeVisitor() {}
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};
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@@ -1377,13 +1377,13 @@ class LinkDotIfaceVisitor : public AstNVisitor {
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// Create symbol table for the vars
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m_curSymp = m_statep->insertBlock(m_curSymp, nodep->name(), nodep, NULL);
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m_curSymp->fallbackp(oldCurSymp);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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m_curSymp = oldCurSymp;
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}
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virtual void visit(AstModportFTaskRef* nodep) {
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UINFO(5," fif: "<<nodep<<endl);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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if (nodep->isExport()) nodep->v3error("Unsupported: modport export");
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VSymEnt* symp = m_curSymp->findIdFallback(nodep->name());
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if (!symp) {
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@@ -1404,7 +1404,7 @@ class LinkDotIfaceVisitor : public AstNVisitor {
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}
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virtual void visit(AstModportVarRef* nodep) {
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UINFO(5," fiv: "<<nodep<<endl);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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VSymEnt* symp = m_curSymp->findIdFallback(nodep->name());
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if (!symp) {
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nodep->v3error("Modport item not found: "<<nodep->prettyName());
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@@ -1428,7 +1428,7 @@ class LinkDotIfaceVisitor : public AstNVisitor {
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}
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virtual void visit(AstNode* nodep) {
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// Default: Just iterate
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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public:
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@@ -1437,7 +1437,7 @@ public:
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UINFO(4,__FUNCTION__<<": "<<endl);
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m_curSymp = curSymp;
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m_statep = statep;
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nodep->accept(*this);
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iterate(nodep);
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}
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virtual ~LinkDotIfaceVisitor() {}
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};
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@@ -1582,7 +1582,7 @@ private:
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// VISITs
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virtual void visit(AstNetlist* nodep) {
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// Recurse..., backward as must do packages before using packages
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nodep->iterateChildrenBackwards(*this);
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iterateChildrenBackwards(nodep);
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}
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virtual void visit(AstTypeTable* nodep) {}
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virtual void visit(AstNodeModule* nodep) {
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@@ -1594,7 +1594,7 @@ private:
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m_cellp = NULL;
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m_modp = nodep;
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m_modportNum = 0;
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_modp = NULL;
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m_ds.m_dotSymp = m_curSymp = m_modSymp = NULL;
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}
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@@ -1604,7 +1604,7 @@ private:
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VSymEnt* oldCurSymp = m_curSymp;
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checkNoDot(nodep);
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m_ds.m_dotSymp = m_curSymp = m_modSymp = m_statep->getScopeSym(nodep);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_ds.m_dotSymp = m_curSymp = m_modSymp = NULL;
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m_modSymp = oldModSymp;
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m_curSymp = oldCurSymp;
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@@ -1636,7 +1636,7 @@ private:
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UINFO(4,"(Backto) Link Cell: "<<nodep<<endl);
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//if (debug()) { nodep->dumpTree(cout,"linkcell:"); }
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//if (debug()) { nodep->modp()->dumpTree(cout,"linkcemd:"); }
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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m_pinSymp = NULL;
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}
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}
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@@ -1647,7 +1647,7 @@ private:
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virtual void visit(AstPin* nodep) {
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// Pin: Link to submodule's port
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checkNoDot(nodep);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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if (!nodep->modVarp()) {
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if (!m_pinSymp) nodep->v3fatalSrc("Pin not under cell?");
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VSymEnt* foundp = m_pinSymp->findIdFlat(nodep->name());
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@@ -1701,7 +1701,7 @@ private:
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m_ds.m_dotPos = DP_PACKAGE;
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} else {
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m_ds.m_dotPos = DP_SCOPE;
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nodep->lhsp()->iterateAndNext(*this);
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iterateAndNextNull(nodep->lhsp());
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//if (debug()>=9) nodep->dumpTree("-dot-lho: ");
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}
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if (m_ds.m_unresolved && (VN_IS(nodep->lhsp(), CellRef) || VN_IS(nodep->lhsp(), CellArrayRef))) {
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@@ -1709,7 +1709,7 @@ private:
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}
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if (!m_ds.m_dotErr) { // Once something wrong, give up
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if (start && m_ds.m_dotPos==DP_SCOPE) m_ds.m_dotPos = DP_FINAL; // Top 'final' dot RHS is final RHS, else it's a DOT(DOT(x,*here*),real-rhs) which we consider a RHS
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nodep->rhsp()->iterateAndNext(*this);
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iterateAndNextNull(nodep->rhsp());
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//if (debug()>=9) nodep->dumpTree("-dot-rho: ");
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}
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if (start) {
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@@ -1952,7 +1952,7 @@ private:
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// ParseRefs are used the first pass (forPrimary) so we shouldn't get can't find
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// errors here now that we have a VarRef.
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// No checkNoDot; created and iterated from a parseRef
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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if (!nodep->varp()) {
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UINFO(9," linkVarRef se"<<(void*)m_curSymp<<" n="<<nodep<<endl);
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if (!m_curSymp) nodep->v3fatalSrc("NULL lookup symbol table");
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@@ -2034,20 +2034,20 @@ private:
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}
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virtual void visit(AstEnumItemRef* nodep) {
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// EnumItemRef may be under a dot. Should already be resolved.
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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virtual void visit(AstMethodSel* nodep) {
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// Created here so should already be resolved.
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DotStates lastStates = m_ds;
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{
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m_ds.init(m_curSymp);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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m_ds = lastStates;
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}
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virtual void visit(AstVar* nodep) {
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checkNoDot(nodep);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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if (m_statep->forPrimary() && nodep->isIO() && !m_ftaskp && !nodep->user4()) {
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nodep->v3error("Input/output/inout does not appear in port list: "<<nodep->prettyName());
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}
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@@ -2138,13 +2138,13 @@ private:
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DotStates lastStates = m_ds;
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{
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m_ds.init(m_curSymp);
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nodep->iterateChildren(*this);
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iterateChildren(nodep);
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}
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m_ds = lastStates;
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}
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virtual void visit(AstSelBit* nodep) {
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if (nodep->user3SetOnce()) return;
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nodep->lhsp()->iterateAndNext(*this);
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iterateAndNextNull(nodep->lhsp());
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if (m_ds.m_dotPos == DP_SCOPE) { // Already under dot, so this is {modulepart} DOT {modulepart}
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UINFO(9," deferring until after a V3Param pass: "<<nodep<<endl);
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m_ds.m_dotText += "__BRA__??__KET__";
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@@ -2152,12 +2152,12 @@ private:
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// And pass up m_ds.m_dotText
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}
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// Pass dot state down to fromp()
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nodep->fromp()->iterateAndNext(*this);
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iterateAndNextNull(nodep->fromp());
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DotStates lastStates = m_ds;
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{
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||||
m_ds.init(m_curSymp);
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nodep->bitp()->iterateAndNext(*this);
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||||
nodep->attrp()->iterateAndNext(*this);
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iterateAndNextNull(nodep->bitp());
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iterateAndNextNull(nodep->attrp());
|
||||
}
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||||
m_ds = lastStates;
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if (m_ds.m_unresolved && m_ds.m_dotPos == DP_SCOPE) {
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||||
@@ -2174,19 +2174,19 @@ private:
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||||
m_ds.m_dotErr = true;
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||||
return;
|
||||
}
|
||||
nodep->lhsp()->iterateAndNext(*this);
|
||||
iterateAndNextNull(nodep->lhsp());
|
||||
DotStates lastStates = m_ds;
|
||||
{
|
||||
m_ds.init(m_curSymp);
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||||
nodep->rhsp()->iterateAndNext(*this);
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||||
nodep->thsp()->iterateAndNext(*this);
|
||||
nodep->attrp()->iterateAndNext(*this);
|
||||
iterateAndNextNull(nodep->rhsp());
|
||||
iterateAndNextNull(nodep->thsp());
|
||||
iterateAndNextNull(nodep->attrp());
|
||||
}
|
||||
m_ds = lastStates;
|
||||
}
|
||||
virtual void visit(AstMemberSel* nodep) {
|
||||
// checkNoDot not appropriate, can be under a dot
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
}
|
||||
virtual void visit(AstBegin* nodep) {
|
||||
UINFO(5," "<<nodep<<endl);
|
||||
@@ -2195,7 +2195,7 @@ private:
|
||||
{
|
||||
m_ds.m_dotSymp = m_curSymp = m_statep->getNodeSym(nodep);
|
||||
UINFO(5," cur=se"<<(void*)m_curSymp<<endl);
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
}
|
||||
m_ds.m_dotSymp = m_curSymp = oldCurSymp;
|
||||
UINFO(5," cur=se"<<(void*)m_curSymp<<endl);
|
||||
@@ -2207,7 +2207,7 @@ private:
|
||||
{
|
||||
m_ftaskp = nodep;
|
||||
m_ds.m_dotSymp = m_curSymp = m_statep->getNodeSym(nodep);
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
}
|
||||
m_ds.m_dotSymp = m_curSymp = oldCurSymp;
|
||||
m_ftaskp = NULL;
|
||||
@@ -2243,11 +2243,11 @@ private:
|
||||
nodep->v3error("Can't find typedef: "<<nodep->prettyName());
|
||||
}
|
||||
}
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
}
|
||||
virtual void visit(AstDpiExport* nodep) {
|
||||
// AstDpiExport: Make sure the function referenced exists, then dump it
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
checkNoDot(nodep);
|
||||
VSymEnt* foundp = m_curSymp->findIdFallback(nodep->name());
|
||||
AstNodeFTask* taskp = foundp ? VN_CAST(foundp->nodep(), NodeFTask) : NULL;
|
||||
@@ -2277,7 +2277,7 @@ private:
|
||||
}
|
||||
virtual void visit(AstCellRef* nodep) {
|
||||
UINFO(5," AstCellRef: "<<nodep<<" "<<m_ds.ascii()<<endl);
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
}
|
||||
virtual void visit(AstCellArrayRef* nodep) {
|
||||
UINFO(5," AstCellArrayRef: "<<nodep<<" "<<m_ds.ascii()<<endl);
|
||||
@@ -2291,7 +2291,7 @@ private:
|
||||
virtual void visit(AstNode* nodep) {
|
||||
// Default: Just iterate
|
||||
checkNoDot(nodep);
|
||||
nodep->iterateChildren(*this);
|
||||
iterateChildren(nodep);
|
||||
}
|
||||
public:
|
||||
// CONSTUCTORS
|
||||
@@ -2306,7 +2306,7 @@ public:
|
||||
m_ftaskp = NULL;
|
||||
m_modportNum = 0;
|
||||
//
|
||||
rootp->accept(*this);
|
||||
iterate(rootp);
|
||||
}
|
||||
virtual ~LinkDotResolveVisitor() {}
|
||||
};
|
||||
|
||||
Reference in New Issue
Block a user