/// \brief Configure the diagnostics object for use with ASTUnit.
void ASTUnit::ConfigureDiags(llvm::IntrusiveRefCntPtr<DiagnosticsEngine> &Diags,
const char **ArgBegin, const char **ArgEnd,
ASTUnit &AST, bool CaptureDiagnostics) {
if (!Diags.getPtr()) {
// No diagnostics engine was provided, so create our own diagnostics object
// with the default options.
DiagnosticOptions DiagOpts;
DiagnosticConsumer *Client = 0;
if (CaptureDiagnostics)
Client = new StoredDiagnosticConsumer(AST.StoredDiagnostics);
Diags = CompilerInstance::createDiagnostics(DiagOpts, ArgEnd- ArgBegin,
ArgBegin, Client);
} else if (CaptureDiagnostics) {
Diags->setClient(new StoredDiagnosticConsumer(AST.StoredDiagnostics));
}
}
bool Parse( Furrovine::String filename ) {
class ASTDeclConsumer : public clang::ASTConsumer {
public:
ASTDeclConsumer( std::vector<clang::Decl*>& arg )
: vec( arg ) {}
std::vector<clang::Decl*>& vec;
bool HandleTopLevelDecl( clang::DeclGroupRef arg ) {
for ( auto && x : arg ) {
vec.push_back( x );
}
return true;
}
};
ASTDeclConsumer astconsumer( declarations );
llvm::StringRef llvmfilename( reinterpret_cast<char*>( filename.data( ) ) );
clang::CompilerInstance ci;
clang::DiagnosticsEngine diagnosticsengine( diagnosticids, llvmdiagnosticsoptions.getPtr(), new clang::TextDiagnosticPrinter( errorstream, llvmdiagnosticsoptions.getPtr(), false ), true );
clang::FileManager filemanager( filesystemoptions );
clang::SourceManager sourcemanager( diagnosticsengine, filemanager );
std::unique_ptr<clang::TargetInfo> targetinfo( clang::TargetInfo::CreateTargetInfo( diagnosticsengine, &targetoptions ) );
targetinfo->setCXXABI( clang::TargetCXXABI::Microsoft );
clang::HeaderSearchOptions& headersearchoptions = *llvmheadersearchoptions;
clang::HeaderSearch hs( llvmheadersearchoptions, filemanager, diagnosticsengine, languageoptions, targetinfo.get( ) );
clang::PreprocessorOptions& preprocessoroptions = *llvmpreprocessoroptions;
clang::Preprocessor preprocessor( llvmpreprocessoroptions, diagnosticsengine, languageoptions, targetinfo.get( ), sourcemanager, hs, ci );
clang::InitializePreprocessor( preprocessor, preprocessoroptions, headersearchoptions, frontendoptions );
preprocessor.getBuiltinInfo( ).InitializeBuiltins( preprocessor.getIdentifierTable( ), languageoptions );
clang::ASTContext astcontext( languageoptions, sourcemanager, targetinfo.get( ), preprocessor.getIdentifierTable( ), preprocessor.getSelectorTable( ), preprocessor.getBuiltinInfo( ), 1024 );
clang::Sema sema( preprocessor, astcontext, astconsumer, clang::TU_Complete, null );
const clang::DirectoryLookup* directlookup = nullptr;
auto entry = hs.LookupFile( llvmfilename, true, nullptr, directlookup, nullptr, nullptr, nullptr, nullptr );
if ( !entry )
entry = filemanager.getFile( llvmfilename );
if ( !entry )
throw Furrovine::TException<std::exception>( "Could not find file " + filename );
auto fileid = sourcemanager.createFileID( entry, clang::SourceLocation( ), clang::SrcMgr::CharacteristicKind::C_User );
if ( fileid.isInvalid( ) )
throw Furrovine::TException<std::exception>( "Error translating file " + filename );
sourcemanager.setMainFileID( fileid );
diagnosticsengine.getClient( )->BeginSourceFile( languageoptions, &preprocessor );
clang::ParseAST( sema );
diagnosticsengine.getClient( )->EndSourceFile( );
return diagnosticsengine.getClient( )->getNumErrors() == 0;
}
void clang::ProcessWarningOptions(DiagnosticsEngine &Diags,
const DiagnosticOptions &Opts) {
Diags.setSuppressSystemWarnings(true); // Default to -Wno-system-headers
Diags.setIgnoreAllWarnings(Opts.IgnoreWarnings);
Diags.setShowOverloads(
static_cast<DiagnosticsEngine::OverloadsShown>(Opts.ShowOverloads));
// Handle -ferror-limit
if (Opts.ErrorLimit)
Diags.setErrorLimit(Opts.ErrorLimit);
if (Opts.TemplateBacktraceLimit)
Diags.setTemplateBacktraceLimit(Opts.TemplateBacktraceLimit);
// If -pedantic or -pedantic-errors was specified, then we want to map all
// extension diagnostics onto WARNING or ERROR unless the user has futz'd
// around with them explicitly.
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 llvm::IntrusiveRefCntPtr< DiagnosticIDs > DiagIDs =
Diags.getDiagnosticIDs();
// We parse the warning options twice. The first pass sets diagnostic state,
// while the second pass reports warnings/errors. This has the effect that
// we follow the more canonical "last option wins" paradigm when there are
// conflicting options.
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];
// Check to see if this warning starts with "no-", if so, this is a
// negative form of the option.
bool isPositive = true;
if (Opt.startswith("no-")) {
isPositive = false;
Opt = Opt.substr(3);
}
// Figure out how this option affects the warning. If -Wfoo, map the
// diagnostic to a warning, if -Wno-foo, map it to ignore.
diag::Mapping Mapping = isPositive ? diag::MAP_WARNING : diag::MAP_IGNORE;
// -Wsystem-headers is a special case, not driven by the option table. It
// cannot be controlled with -Werror.
if (Opt == "system-headers") {
if (SetDiagnostic)
Diags.setSuppressSystemWarnings(!isPositive);
continue;
}
// -Weverything is a special case as well. It implicitly enables all
// warnings, including ones not explicitly in a warning group.
if (Opt == "everything") {
if (SetDiagnostic)
Diags.setEnableAllWarnings(true);
continue;
}
// -Werror/-Wno-error is a special case, not controlled by the option
// table. It also has the "specifier" form of -Werror=foo and -Werror-foo.
if (Opt.startswith("error")) {
StringRef Specifier;
if (Opt.size() > 5) { // Specifier must be present.
if ((Opt[5] != '=' && Opt[5] != '-') || Opt.size() == 6) {
if (Report)
Diags.Report(diag::warn_unknown_warning_specifier)
<< "-Werror" << ("-W" + Opt.str());
continue;
}
Specifier = Opt.substr(6);
}
if (Specifier.empty()) {
if (SetDiagnostic)
Diags.setWarningsAsErrors(isPositive);
continue;
}
if (SetDiagnostic) {
// Set the warning as error flag for this specifier.
Diags.setDiagnosticGroupWarningAsError(Specifier, isPositive);
} else if (DiagIDs->getDiagnosticsInGroup(Specifier, _Diags)) {
EmitUnknownDiagWarning(Diags, "-Werror=", Specifier, isPositive);
}
continue;
}
// -Wfatal-errors is yet another special case.
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" + Opt.str());
continue;
}
Specifier = Opt.substr(13);
}
if (Specifier.empty()) {
if (SetDiagnostic)
Diags.setErrorsAsFatal(isPositive);
continue;
}
if (SetDiagnostic) {
// Set the error as fatal flag for this specifier.
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, "-W", Opt, isPositive);
} else {
Diags.setDiagnosticGroupMapping(Opt, Mapping);
}
}
}
}