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Support parameter forward types.

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This commit is contained in:
Wilson Snyder
2025-05-19 08:35:38 -04:00
parent f74c67da46
commit ad08302e5f
14 changed files with 192 additions and 60 deletions
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src/V3Param.cpp
+18
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@@ -782,6 +782,24 @@ class ParamProcessor final {
// Constify may have caused pinp->exprp to change
rawTypep = VN_AS(pinp->exprp(), NodeDType);
exprp = rawTypep->skipRefToNonRefp();
bool ok = true;
switch (modvarp->fwdType()) {
case VFwdType::NONE: ok = true; break;
case VFwdType::ENUM: ok = VN_IS(exprp, EnumDType); break;
case VFwdType::STRUCT: ok = VN_IS(exprp, StructDType); break;
case VFwdType::UNION: ok = VN_IS(exprp, UnionDType); break;
case VFwdType::CLASS: ok = VN_IS(exprp, ClassRefDType); break;
case VFwdType::INTERFACE_CLASS: // TODO: Over permissive for now:
ok = VN_IS(exprp, ClassRefDType);
break;
default: modvarp->v3fatalSrc("Bad case");
}
if (!ok) {
pinp->v3error("Parameter type expression type "
<< exprp->prettyDTypeNameQ()
<< " violates parameter's forwarding type '"
<< modvarp->fwdType().ascii() << "'");
}
if (exprp->similarDType(origp)) {
// Setting parameter to its default value. Just ignore it.
// This prevents making additional modules, and makes coverage more