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This commit is contained in:
Eelco Dolstra 2020-10-07 16:33:19 +02:00
parent 5257a2559e
commit 27ca87c46a
3 changed files with 32 additions and 28 deletions
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26
src/libutil/error.cc
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@ -11,13 +11,13 @@ const std::string nativeSystem = SYSTEM;
BaseError & BaseError::addTrace(std::optional<ErrPos> e, hintformat hint)
{
err.traces.push_front(Trace { .pos = e, .hint = hint});
err.traces.push_front(Trace { .pos = e, .hint = hint });
return *this;
}
// c++ std::exception descendants must have a 'const char* what()' function.
// This stringifies the error and caches it for use by what(), or similarly by msg().
const string& BaseError::calcWhat() const
const string & BaseError::calcWhat() const
{
if (what_.has_value())
return *what_;
@ -34,12 +34,12 @@ const string& BaseError::calcWhat() const
std::optional<string> ErrorInfo::programName = std::nullopt;
std::ostream& operator<<(std::ostream &os, const hintformat &hf)
std::ostream & operator<<(std::ostream & os, const hintformat & hf)
{
return os << hf.str();
}
string showErrPos(const ErrPos &errPos)
string showErrPos(const ErrPos & errPos)
{
if (errPos.line > 0) {
if (errPos.column > 0) {
@ -53,7 +53,7 @@ string showErrPos(const ErrPos &errPos)
}
}
std::optional<LinesOfCode> getCodeLines(const ErrPos &errPos)
std::optional<LinesOfCode> getCodeLines(const ErrPos & errPos)
{
if (errPos.line <= 0)
return std::nullopt;
@ -92,13 +92,13 @@ std::optional<LinesOfCode> getCodeLines(const ErrPos &errPos)
return loc;
}
}
catch (EndOfFile &eof) {
catch (EndOfFile & eof) {
if (loc.errLineOfCode.has_value())
return loc;
else
return std::nullopt;
}
catch (std::exception &e) {
catch (std::exception & e) {
printError("error reading nix file: %s\n%s", errPos.file, e.what());
return std::nullopt;
}
@ -137,10 +137,10 @@ std::optional<LinesOfCode> getCodeLines(const ErrPos &errPos)
}
// print lines of code to the ostream, indicating the error column.
void printCodeLines(std::ostream &out,
const string &prefix,
const ErrPos &errPos,
const LinesOfCode &loc)
void printCodeLines(std::ostream & out,
const string & prefix,
const ErrPos & errPos,
const LinesOfCode & loc)
{
// previous line of code.
if (loc.prevLineOfCode.has_value()) {
@ -186,7 +186,7 @@ void printCodeLines(std::ostream &out,
}
}
void printAtPos(const string &prefix, const ErrPos &pos, std::ostream &out)
void printAtPos(const string & prefix, const ErrPos & pos, std::ostream & out)
{
if (pos)
{
@ -212,7 +212,7 @@ void printAtPos(const string &prefix, const ErrPos &pos, std::ostream &out)
}
}
std::ostream& showErrorInfo(std::ostream &out, const ErrorInfo &einfo, bool showTrace)
std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool showTrace)
{
auto errwidth = std::max<size_t>(getWindowSize().second, 20);
string prefix = "";