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Merge pull request #6337 from danpls/fix-to-json-repl

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libexpr: Throw the correct error in toJSON
This commit is contained in:
Eelco Dolstra 2022-03-31 11:33:16 +02:00 committed by GitHub
commit 0fe8849914
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3 changed files with 6 additions and 6 deletions
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3
src/libexpr/value-to-json.cc
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@ -84,7 +84,8 @@ void printValueAsJSON(EvalState & state, bool strict,
.msg = hintfmt("cannot convert %1% to JSON", showType(v)),
.errPos = v.determinePos(pos)
});
throw e.addTrace(pos, hintfmt("message for the trace"));
e.addTrace(pos, hintfmt("message for the trace"));
throw e;
}
}

3
src/libutil/error.cc
View file

@ -9,10 +9,9 @@ namespace nix {
const std::string nativeSystem = SYSTEM;
BaseError & BaseError::addTrace(std::optional<ErrPos> e, hintformat hint)
void BaseError::addTrace(std::optional<ErrPos> e, hintformat hint)
{
err.traces.push_front(Trace { .pos = e, .hint = hint });
return *this;
}
// c++ std::exception descendants must have a 'const char* what()' function.

6
src/libutil/error.hh
View file

@ -175,12 +175,12 @@ public:
const ErrorInfo & info() const { calcWhat(); return err; }
template<typename... Args>
BaseError & addTrace(std::optional<ErrPos> e, const std::string & fs, const Args & ... args)
void addTrace(std::optional<ErrPos> e, const std::string & fs, const Args & ... args)
{
return addTrace(e, hintfmt(fs, args...));
addTrace(e, hintfmt(fs, args...));
}
BaseError & addTrace(std::optional<ErrPos> e, hintformat hint);
void addTrace(std::optional<ErrPos> e, hintformat hint);
bool hasTrace() const { return !err.traces.empty(); }
};