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Internals: Add AstToStringN (#4732 prep)

This commit is contained in:
Wilson Snyder 2025-08-21 21:09:10 -04:00
parent 997d5ecdf1
commit b96f35b8fe
3 changed files with 27 additions and 7 deletions
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14
src/V3AstNodeExpr.h
View File

@ -5534,6 +5534,20 @@ public:
bool cleanLhs() const override { return true; }
bool sizeMattersLhs() const override { return false; }
};
class AstToStringN final : public AstNodeUniop {
public:
AstToStringN(FileLine* fl, AstNodeExpr* lhsp)
: ASTGEN_SUPER_ToStringN(fl, lhsp) {
dtypeSetString();
}
ASTGEN_MEMBERS_AstToStringN;
void numberOperate(V3Number& out, const V3Number& lhs) override { V3ERROR_NA; }
string emitVerilog() override { return "$sformatf(\"%p\", %l)"; }
string emitC() override { return isWide() ? "VL_TO_STRING_W(%nw, %li)" : "VL_TO_STRING(%li)"; }
bool cleanOut() const override { return true; }
bool cleanLhs() const override { return true; }
bool sizeMattersLhs() const override { return false; }
};
class AstToUpperN final : public AstNodeUniop {
// string.toupper()
public:

7
src/V3Simulate.h
View File

@ -1260,6 +1260,13 @@ private:
}
}
}
void visit(AstToStringN* nodep) override {
if (jumpingOver()) return;
if (!optimizable()) return; // Accelerate
checkNodeInfo(nodep);
iterateChildrenConst(nodep);
clearOptimizable(nodep, "Cannot convert to string"); // LCOV_EXCL_LINE
}
void visit(AstCoverInc* nodep) override { m_isCoverage = true; }

13
src/V3Width.cpp
View File

@ -5525,6 +5525,11 @@ class WidthVisitor final : public VNVisitor {
userIterateAndNext(nodep->fmtp(), WidthVP{SELF, BOTH}.p());
userIterateAndNext(nodep->lhsp(), WidthVP{SELF, BOTH}.p());
}
void visit(AstToStringN* nodep) override {
// Inserted by V3Width only so we know has been resolved
nodep->dtypeSetString();
userIterateAndNext(nodep->lhsp(), WidthVP{nodep->lhsp()->dtypep(), BOTH}.p());
}
void visit(AstSFormatF* nodep) override {
// Excludes NodeDisplay, see below
if (m_vup && !m_vup->prelim()) return; // Can be called as statement or function
@ -5611,13 +5616,7 @@ class WidthVisitor final : public VNVisitor {
VNRelinker handle;
argp->unlinkFrBack(&handle);
FileLine* const flp = nodep->fileline();
AstCExpr* const newp = new AstCExpr{flp, nullptr};
newp->addExprsp(new AstText{flp, "VL_TO_STRING(", true});
newp->addExprsp(argp);
newp->addExprsp(new AstText{flp, ")", true});
newp->dtypeSetString();
newp->pure(true);
newp->protect(false);
AstNodeExpr* const newp = new AstToStringN{flp, argp};
handle.relink(newp);
// Set argp to what we replaced it with, as we will keep processing the
// next argument.