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Initial frames support

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This commit is contained in:
Guillaume Maudoux 2022-10-17 03:05:02 +02:00
parent 3f9f6ae127
commit b945b844a9
5 changed files with 63 additions and 13 deletions
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9
src/libutil/error.cc
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@ -9,9 +9,9 @@ namespace nix {
const std::string nativeSystem = SYSTEM;
void BaseError::addTrace(std::optional<ErrPos> e, hintformat hint)
void BaseError::addTrace(std::optional<ErrPos> e, hintformat hint, bool frame)
{
err.traces.push_front(Trace { .pos = e, .hint = hint });
err.traces.push_front(Trace { .pos = e, .hint = hint, .frame = frame });
}
// c++ std::exception descendants must have a 'const char* what()' function.
@ -382,6 +382,7 @@ std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool s
*
*/
bool frameOnly = false;
if (!einfo.traces.empty()) {
unsigned int count = 0;
for (auto iter = einfo.traces.rbegin(); iter != einfo.traces.rend(); ++iter) {
@ -391,7 +392,11 @@ std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool s
}
if (iter->hint.str().empty()) continue;
if (frameOnly && !iter->frame) continue;
count++;
frameOnly = iter->frame;
oss << "\n" << "… " << iter->hint.str() << "\n";
if (iter->pos.has_value() && (*iter->pos)) {

3
src/libutil/error.hh
View file

@ -110,6 +110,7 @@ void printAtPos(const ErrPos & pos, std::ostream & out);
struct Trace {
std::optional<ErrPos> pos;
hintformat hint;
bool frame;
};
struct ErrorInfo {
@ -188,7 +189,7 @@ public:
addTrace(e, hintfmt(std::string(fs), args...));
}
void addTrace(std::optional<ErrPos> e, hintformat hint);
void addTrace(std::optional<ErrPos> e, hintformat hint, bool frame = false);
bool hasTrace() const { return !err.traces.empty(); }
};