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Implement a suggestions mechanism

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Each `Error` class now includes a set of suggestions, and these are printed by
the top-level handler.
This commit is contained in:
regnat 2022-03-03 10:50:35 +01:00
parent b09baf690b
commit c0792b1546
7 changed files with 191 additions and 6 deletions
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7
src/libutil/error.cc
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@ -282,6 +282,13 @@ std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool s
}
}
auto suggestions = einfo.suggestions.trim();
if (! suggestions.suggestions.empty()){
oss << "Did you mean " <<
suggestions.trim().pretty_print() <<
"?" << std::endl;
}
// traces
if (showTrace && !einfo.traces.empty()) {
for (auto iter = einfo.traces.rbegin(); iter != einfo.traces.rend(); ++iter) {