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Support "ref" and "const ref" pins and functions, bug1360.

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This commit is contained in:
Wilson Snyder
2018-10-30 20:50:09 -04:00
parent d3e1dfd3f5
commit ad2929dff0
15 changed files with 350 additions and 41 deletions
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src/V3AstNodes.cpp
+44 -25
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@@ -208,50 +208,68 @@ string AstVar::verilogKwd() const {
string AstVar::vlArgType(bool named, bool forReturn, bool forFunc) const {
if (forReturn) named=false;
if (forReturn) v3fatalSrc("verilator internal data is never passed as return, but as first argument");
string arg;
if (isWide() && isReadOnly()) arg += "const ";
string otype;
AstBasicDType* bdtypep = basicp();
bool strtype = bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::STRING;
if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::CHARPTR) {
arg += "const char*";
otype += "const char*";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::SCOPEPTR) {
arg += "const VerilatedScope*";
otype += "const VerilatedScope*";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::DOUBLE) {
arg += "double";
if (forFunc && isReadOnly()) otype += "const ";
otype += "double";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::FLOAT) {
arg += "float";
if (forFunc && isReadOnly()) otype += "const ";
otype += "float";
} else if (strtype) {
if (isReadOnly()) arg += "const ";
arg += "std::string";
if (forFunc && isReadOnly()) otype += "const ";
otype += "std::string";
} else if (widthMin() <= 8) {
arg += "CData";
if (forFunc && isReadOnly()) otype += "const ";
otype += "CData";
} else if (widthMin() <= 16) {
arg += "SData";
if (forFunc && isReadOnly()) otype += "const ";
otype += "SData";
} else if (widthMin() <= VL_WORDSIZE) {
arg += "IData";
if (forFunc && isReadOnly()) otype += "const ";
otype += "IData";
} else if (isQuad()) {
arg += "QData";
if (forFunc && isReadOnly()) otype += "const ";
otype += "QData";
} else if (isWide()) {
arg += "WData"; // []'s added later
if (forFunc && isReadOnly()) otype += "const ";
otype += "WData"; // []'s added later
}
if (isDpiOpenArray() || (isWide() && !strtype)) {
arg += " (& "+name()+")";
bool mayparen = false; // Need paren, to handle building "(& name)[2]"
string oname;
if (isDpiOpenArray()
|| (isWide() && !strtype)
|| (forFunc && (isWritable()
|| direction()==VDirection::REF
|| direction()==VDirection::CONSTREF
|| (strtype && isNonOutput())))) {
oname += "&";
mayparen = true;
}
if (named) oname += " "+name();
string oarray;
if (isDpiOpenArray() || direction().isRefOrConstRef()) {
for (AstNodeDType* dtp=dtypep(); dtp; ) {
dtp = dtp->skipRefp(); // Skip AstRefDType/AstTypedef, or return same node
if (AstUnpackArrayDType* adtypep = VN_CAST(dtp, UnpackArrayDType)) {
arg += "["+cvtToStr(adtypep->declRange().elements())+"]";
if (mayparen) { oname = " ("+oname+")"; mayparen = false; }
oarray += "["+cvtToStr(adtypep->declRange().elements())+"]";
dtp = adtypep->subDTypep();
} else break;
}
if (isWide() && !strtype) {
arg += "["+cvtToStr(widthWords())+"]";
}
} else {
if (forFunc && (isWritable()
|| (strtype && isNonOutput()))) arg += "&";
if (named) arg += " "+name();
}
return arg;
if (isWide() && !strtype) {
if (mayparen) { oname = " ("+oname+")"; mayparen = false; }
oarray += "["+cvtToStr(widthWords())+"]";
}
return otype+oname+oarray;
}
string AstVar::vlEnumType() const {
@@ -342,7 +360,8 @@ string AstVar::cPubArgType(bool named, bool forReturn) const {
arg += " (& "+name();
arg += ")["+cvtToStr(widthWords())+"]";
} else {
if (!forReturn && isWritable()) arg += "&";
if (!forReturn && (isWritable()
|| direction().isRefOrConstRef())) arg += "&";
if (named) arg += " "+name();
}
return arg;