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Merge pull request #7334 from chaoflow/stack-trace-order

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Show stack trace above error message with innermost first
This commit is contained in:
Valentin Gagarin 2022-12-12 22:03:00 +01:00 committed by GitHub
commit edb54c62e6
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3 changed files with 25 additions and 23 deletions
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2
src/libexpr/eval.cc
View file

@ -1660,7 +1660,7 @@ void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value &
(lambda.name
? concatStrings("'", symbols[lambda.name], "'")
: "anonymous lambda"));
addErrorTrace(e, pos, "from call site%s", "");
addErrorTrace(e, pos, "while evaluating call site%s", "");
}
throw;
}

4
src/libexpr/flake/flake.cc
View file

@ -143,7 +143,7 @@ static FlakeInput parseFlakeInput(EvalState & state,
} catch (Error & e) {
e.addTrace(
state.positions[attr.pos],
hintfmt("in flake attribute '%s'", state.symbols[attr.name]));
hintfmt("while evaluating flake attribute '%s'", state.symbols[attr.name]));
throw;
}
}
@ -152,7 +152,7 @@ static FlakeInput parseFlakeInput(EvalState & state,
try {
input.ref = FlakeRef::fromAttrs(attrs);
} catch (Error & e) {
e.addTrace(state.positions[pos], hintfmt("in flake input"));
e.addTrace(state.positions[pos], hintfmt("while evaluating flake input"));
throw;
}
else {

42
src/libutil/error.cc
View file

@ -262,6 +262,28 @@ std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool s
prefix += ":" ANSI_NORMAL " ";
std::ostringstream oss;
// traces
if (showTrace && !einfo.traces.empty()) {
for (const auto & trace : einfo.traces) {
oss << "\n" << "… " << trace.hint.str() << "\n";
if (trace.pos.has_value() && (*trace.pos)) {
auto pos = trace.pos.value();
oss << "\n";
printAtPos(pos, oss);
auto loc = getCodeLines(pos);
if (loc.has_value()) {
oss << "\n";
printCodeLines(oss, "", pos, *loc);
oss << "\n";
}
}
}
oss << "\n" << prefix;
}
oss << einfo.msg << "\n";
if (einfo.errPos.has_value() && *einfo.errPos) {
@ -285,26 +307,6 @@ std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool s
"?" << std::endl;
}
// traces
if (showTrace && !einfo.traces.empty()) {
for (auto iter = einfo.traces.rbegin(); iter != einfo.traces.rend(); ++iter) {
oss << "\n" << "… " << iter->hint.str() << "\n";
if (iter->pos.has_value() && (*iter->pos)) {
auto pos = iter->pos.value();
oss << "\n";
printAtPos(pos, oss);
auto loc = getCodeLines(pos);
if (loc.has_value()) {
oss << "\n";
printCodeLines(oss, "", pos, *loc);
oss << "\n";
}
}
}
}
out << indent(prefix, std::string(filterANSIEscapes(prefix, true).size(), ' '), chomp(oss.str()));
return out;