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Internals: Refactor input/output to new class in prep for ref support.

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This commit is contained in:
Wilson Snyder
2018-10-27 17:29:00 -04:00
parent dc26815b1c
commit b8098098d8
34 changed files with 456 additions and 391 deletions
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src/V3LinkLValue.cpp
+16 -16
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@@ -56,21 +56,21 @@ private:
nodep->lvalue(true);
}
if (nodep->varp()) {
if (nodep->lvalue() && nodep->varp()->isInOnly()) {
if (!m_ftaskp) {
nodep->v3warn(ASSIGNIN,"Assigning to input variable: "<<nodep->prettyName());
}
}
}
if (nodep->lvalue() && !m_ftaskp
&& nodep->varp()->isReadOnly()) {
nodep->v3warn(ASSIGNIN,"Assigning to input/const variable: "
<<nodep->prettyName());
}
}
iterateChildren(nodep);
}
// Nodes that start propagating down lvalues
virtual void visit(AstPin* nodep) {
if (nodep->modVarp() && nodep->modVarp()->isOutput()) {
// When the varref's were created, we didn't know the I/O state
// Now that we do, and it's from a output, we know it's a lvalue
m_setRefLvalue = true;
if (nodep->modVarp() && nodep->modVarp()->isWritable()) {
// When the varref's were created, we didn't know the I/O state
// Now that we do, and it's from a output, we know it's a lvalue
m_setRefLvalue = true;
iterateChildren(nodep);
m_setRefLvalue = false;
} else {
@@ -238,14 +238,14 @@ private:
if (!taskp) return;
for (AstNode* stmtp = taskp->stmtsp(); stmtp && pinp; stmtp=stmtp->nextp()) {
if (const AstVar* portp = VN_CAST(stmtp, Var)) {
if (portp->isIO()) {
if (portp->isInput()) {
if (portp->isIO()) {
if (portp->isWritable()) {
m_setRefLvalue = true;
iterate(pinp);
} else { // Output or Inout
m_setRefLvalue = true;
m_setRefLvalue = false;
} else {
iterate(pinp);
m_setRefLvalue = false;
}
}
// Advance pin
pinp = pinp->nextp();
}