diff options
Diffstat (limited to 'lib/Frontend/Warnings.cpp')
| -rw-r--r-- | lib/Frontend/Warnings.cpp | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/lib/Frontend/Warnings.cpp b/lib/Frontend/Warnings.cpp deleted file mode 100644 index 767096a1c990..000000000000 --- a/lib/Frontend/Warnings.cpp +++ /dev/null @@ -1,203 +0,0 @@ -//===--- Warnings.cpp - C-Language Front-end ------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// Command line warning options handler. -// -//===----------------------------------------------------------------------===// -// -// This file is responsible for handling all warning options. This includes -// a number of -Wfoo options and their variants, which are driven by TableGen- -// generated data, and the special cases -pedantic, -pedantic-errors, -w, -// -Werror and -Wfatal-errors. -// -// Each warning option controls any number of actual warnings. -// Given a warning option 'foo', the following are valid: -// -Wfoo, -Wno-foo, -Werror=foo, -Wfatal-errors=foo -// -#include "clang/Frontend/Utils.h" -#include "clang/Basic/Diagnostic.h" -#include "clang/Basic/DiagnosticOptions.h" -#include "clang/Frontend/FrontendDiagnostic.h" -#include "clang/Lex/LexDiagnostic.h" -#include "clang/Sema/SemaDiagnostic.h" -#include <algorithm> -#include <cstring> -#include <utility> -using namespace clang; - -// EmitUnknownDiagWarning - Emit a warning and typo hint for unknown warning -// opts -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, - bool ReportDiags) { - Diags.setSuppressSystemWarnings(true); // Default to -Wno-system-headers - Diags.setIgnoreAllWarnings(Opts.IgnoreWarnings); - Diags.setShowOverloads(Opts.getShowOverloads()); - - Diags.setElideType(Opts.ElideType); - Diags.setPrintTemplateTree(Opts.ShowTemplateTree); - Diags.setShowColors(Opts.ShowColors); - - // Handle -ferror-limit - if (Opts.ErrorLimit) - Diags.setErrorLimit(Opts.ErrorLimit); - if (Opts.TemplateBacktraceLimit) - Diags.setTemplateBacktraceLimit(Opts.TemplateBacktraceLimit); - if (Opts.ConstexprBacktraceLimit) - Diags.setConstexprBacktraceLimit(Opts.ConstexprBacktraceLimit); - - // 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); - - SmallVector<diag::kind, 10> _Diags; - const 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); - - // If we've set the diagnostic state and are not reporting diagnostics then - // we're done. - if (!SetDiagnostic && !ReportDiags) - break; - - for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i) { - StringRef Opt = Opts.Warnings[i]; - StringRef OrigOpt = Opts.Warnings[i]; - - // Treat -Wformat=0 as an alias for -Wno-format. - if (Opt == "format=0") - Opt = "no-format"; - - // 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) { - if (isPositive) { - Diags.setEnableAllWarnings(true); - } else { - Diags.setEnableAllWarnings(false); - Diags.setMappingToAllDiagnostics(diag::MAP_IGNORE); - } - } - 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" + OrigOpt.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" + OrigOpt.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, isPositive ? "-W" : "-Wno-", Opt, - isPositive); - } else { - Diags.setDiagnosticGroupMapping(Opt, Mapping); - } - } - } -} |