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Fix escape strings in pattern formatting (#8297)

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This commit is contained in:
Marco Bartoli
2026-09-06 13:22:03 -04:00
committed by GitHub
parent 4d1f208cf0
commit 0b824f160f
5 changed files with 105 additions and 3 deletions
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include/verilated.cpp
+25 -1
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@@ -1282,7 +1282,7 @@ void _vl_vsformat(std::string& output, const std::string& format, int argc,
output += t_tmp;
} else if (formatAttr == VL_VFORMATATTR_STRING) {
const std::string* const strp = static_cast<const std::string*>(thingp);
output += '"' + *strp + '"';
output += VL_TO_STRING(*strp);
} else if (formatAttr == VL_VFORMATATTR_COMPLEX) {
const std::string* const strp = static_cast<const std::string*>(thingp);
output += *strp;
@@ -2488,6 +2488,30 @@ std::string VL_TO_STRING(QData lhs) {
std::string VL_TO_STRING(double lhs) {
return VL_SFORMATF_N_NX("%g", 1, VL_VFORMATATTR_DOUBLE, lhs);
}
std::string VL_TO_STRING(const std::string& obj) VL_PURE {
std::string out{"\""};
out.reserve(obj.size() + 2);
for (const unsigned char ch : obj) {
switch (ch) {
case '\n': out += "\\n"; break;
case '\r': out += "\\r"; break;
case '\t': out += "\\t"; break;
case '"': out += "\\\""; break;
case '\\': out += "\\\\"; break;
default:
if (std::isprint(ch)) {
out += static_cast<char>(ch);
} else {
out += '\\';
out += static_cast<char>('0' + ((ch >> 6) & 3));
out += static_cast<char>('0' + ((ch >> 3) & 7));
out += static_cast<char>('0' + (ch & 7));
}
break;
}
}
return out + '"';
}
std::string VL_TO_STRING_W(int words, const WDataInP obj) {
return VL_SFORMATF_N_NX("'h%0x", 1, VL_VFORMATATTR_UNSIGNED, words * VL_EDATASIZE, obj);
}