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Internals: Add sameGateTree.

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This commit is contained in:
Wilson Snyder
2014-11-02 19:52:49 -05:00
parent cf6d07aafa
commit 8bfb5cc5e9
6 changed files with 73 additions and 36 deletions
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src/V3Ast.cpp
+8 -11
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@@ -884,24 +884,21 @@ void AstNode::cloneRelinkTree() {
//======================================================================
// Comparison
bool AstNode::sameTree(AstNode* node2p) {
return sameTreeIter(node2p, true);
}
bool AstNode::sameTreeIter(AstNode* node2p, bool ignNext) {
bool AstNode::sameTreeIter(AstNode* node2p, bool ignNext, bool gateOnly) {
// Return true if the two trees are identical
if (this==NULL && node2p==NULL) return true;
if (this==NULL || node2p==NULL) return false;
if (this->type() != node2p->type()
|| this->dtypep() != node2p->dtypep()
|| !this->same(node2p)) {
|| !this->same(node2p)
|| (gateOnly && !this->isGateOptimizable())) {
return false;
}
return (this->op1p()->sameTreeIter(node2p->op1p(),false)
&& this->op2p()->sameTreeIter(node2p->op2p(),false)
&& this->op3p()->sameTreeIter(node2p->op3p(),false)
&& this->op4p()->sameTreeIter(node2p->op4p(),false)
&& (ignNext || this->nextp()->sameTreeIter(node2p->nextp(),false))
return (this->op1p()->sameTreeIter(node2p->op1p(),false,gateOnly)
&& this->op2p()->sameTreeIter(node2p->op2p(),false,gateOnly)
&& this->op3p()->sameTreeIter(node2p->op3p(),false,gateOnly)
&& this->op4p()->sameTreeIter(node2p->op4p(),false,gateOnly)
&& (ignNext || this->nextp()->sameTreeIter(node2p->nextp(),false,gateOnly))
);
}