#include "clang/Frontend/Utils.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Sema/SemaDiagnostic.h"
#include "clang/Lex/LexDiagnostic.h"
#include "clang/Frontend/DiagnosticOptions.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include <cstring>
#include <utility>
#include <algorithm>
using namespace clang;
static void EmitUnknownDiagWarning(DiagnosticsEngine &Diags,
StringRef Prefix, StringRef Opt,
bool isPositive) {
StringRef Suggestion = DiagnosticIDs::getNearestWarningOption(Opt);
if (!Suggestion.empty())
Diags.Report(isPositive? diag::warn_unknown_warning_option_suggest :
diag::warn_unknown_negative_warning_option_suggest)
<< (Prefix.str() += Opt) << (Prefix.str() += Suggestion);
else
Diags.Report(isPositive? diag::warn_unknown_warning_option :
diag::warn_unknown_negative_warning_option)
<< (Prefix.str() += Opt);
}
void clang::ProcessWarningOptions(DiagnosticsEngine &Diags,
const DiagnosticOptions &Opts) {
Diags.setSuppressSystemWarnings(true); Diags.setIgnoreAllWarnings(Opts.IgnoreWarnings);
Diags.setShowOverloads(
static_cast<DiagnosticsEngine::OverloadsShown>(Opts.ShowOverloads));
Diags.setElideType(Opts.ElideType);
Diags.setPrintTemplateTree(Opts.ShowTemplateTree);
Diags.setShowColors(Opts.ShowColors);
if (Opts.ErrorLimit)
Diags.setErrorLimit(Opts.ErrorLimit);
if (Opts.TemplateBacktraceLimit)
Diags.setTemplateBacktraceLimit(Opts.TemplateBacktraceLimit);
if (Opts.ConstexprBacktraceLimit)
Diags.setConstexprBacktraceLimit(Opts.ConstexprBacktraceLimit);
if (Opts.PedanticErrors)
Diags.setExtensionHandlingBehavior(DiagnosticsEngine::Ext_Error);
else if (Opts.Pedantic)
Diags.setExtensionHandlingBehavior(DiagnosticsEngine::Ext_Warn);
else
Diags.setExtensionHandlingBehavior(DiagnosticsEngine::Ext_Ignore);
llvm::SmallVector<diag::kind, 10> _Diags;
const IntrusiveRefCntPtr< DiagnosticIDs > DiagIDs =
Diags.getDiagnosticIDs();
for (unsigned Report = 0, ReportEnd = 2; Report != ReportEnd; ++Report) {
bool SetDiagnostic = (Report == 0);
for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i) {
StringRef Opt = Opts.Warnings[i];
StringRef OrigOpt = Opts.Warnings[i];
if (Opt == "format=0")
Opt = "no-format";
bool isPositive = true;
if (Opt.startswith("no-")) {
isPositive = false;
Opt = Opt.substr(3);
}
diag::Mapping Mapping = isPositive ? diag::MAP_WARNING : diag::MAP_IGNORE;
if (Opt == "system-headers") {
if (SetDiagnostic)
Diags.setSuppressSystemWarnings(!isPositive);
continue;
}
if (Opt == "everything") {
if (SetDiagnostic) {
if (isPositive) {
Diags.setEnableAllWarnings(true);
} else {
Diags.setEnableAllWarnings(false);
Diags.setMappingToAllDiagnostics(diag::MAP_IGNORE);
}
}
continue;
}
if (Opt.startswith("error")) {
StringRef Specifier;
if (Opt.size() > 5) { if ((Opt[5] != '=' && Opt[5] != '-') || Opt.size() == 6) {
if (Report)
Diags.Report(diag::warn_unknown_warning_specifier)
<< "-Werror" << ("-W" + OrigOpt.str());
continue;
}
Specifier = Opt.substr(6);
}
if (Specifier.empty()) {
if (SetDiagnostic)
Diags.setWarningsAsErrors(isPositive);
continue;
}
if (SetDiagnostic) {
Diags.setDiagnosticGroupWarningAsError(Specifier, isPositive);
} else if (DiagIDs->getDiagnosticsInGroup(Specifier, _Diags)) {
EmitUnknownDiagWarning(Diags, "-Werror=", Specifier, isPositive);
}
continue;
}
if (Opt.startswith("fatal-errors")) {
StringRef Specifier;
if (Opt.size() != 12) {
if ((Opt[12] != '=' && Opt[12] != '-') || Opt.size() == 13) {
if (Report)
Diags.Report(diag::warn_unknown_warning_specifier)
<< "-Wfatal-errors" << ("-W" + OrigOpt.str());
continue;
}
Specifier = Opt.substr(13);
}
if (Specifier.empty()) {
if (SetDiagnostic)
Diags.setErrorsAsFatal(isPositive);
continue;
}
if (SetDiagnostic) {
Diags.setDiagnosticGroupErrorAsFatal(Specifier, isPositive);
} else if (DiagIDs->getDiagnosticsInGroup(Specifier, _Diags)) {
EmitUnknownDiagWarning(Diags, "-Wfatal-errors=", Specifier,
isPositive);
}
continue;
}
if (Report) {
if (DiagIDs->getDiagnosticsInGroup(Opt, _Diags))
EmitUnknownDiagWarning(Diags, isPositive ? "-W" : "-Wno-", Opt,
isPositive);
} else {
Diags.setDiagnosticGroupMapping(Opt, Mapping);
}
}
}
}