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720 lines
24 KiB
720 lines
24 KiB
//===--- DiagnosticIDs.cpp - Diagnostic IDs Handling ----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Diagnostic IDs-related interfaces.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/DiagnosticIDs.h"
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#include "clang/Basic/AllDiagnostics.h"
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#include "clang/Basic/DiagnosticCategories.h"
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#include "clang/Basic/SourceManager.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <map>
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Builtin Diagnostic information
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//===----------------------------------------------------------------------===//
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namespace {
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// Diagnostic classes.
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enum {
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CLASS_NOTE = 0x01,
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CLASS_REMARK = 0x02,
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CLASS_WARNING = 0x03,
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CLASS_EXTENSION = 0x04,
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CLASS_ERROR = 0x05
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};
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struct StaticDiagInfoRec {
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uint16_t DiagID;
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unsigned DefaultSeverity : 3;
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unsigned Class : 3;
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unsigned SFINAE : 2;
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unsigned WarnNoWerror : 1;
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unsigned WarnShowInSystemHeader : 1;
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unsigned Category : 5;
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uint16_t OptionGroupIndex;
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uint16_t DescriptionLen;
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const char *DescriptionStr;
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unsigned getOptionGroupIndex() const {
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return OptionGroupIndex;
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}
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StringRef getDescription() const {
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return StringRef(DescriptionStr, DescriptionLen);
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}
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diag::Flavor getFlavor() const {
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return Class == CLASS_REMARK ? diag::Flavor::Remark
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: diag::Flavor::WarningOrError;
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}
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bool operator<(const StaticDiagInfoRec &RHS) const {
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return DiagID < RHS.DiagID;
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}
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};
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} // namespace anonymous
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static const StaticDiagInfoRec StaticDiagInfo[] = {
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#define DIAG(ENUM, CLASS, DEFAULT_SEVERITY, DESC, GROUP, SFINAE, NOWERROR, \
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SHOWINSYSHEADER, CATEGORY) \
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{ \
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diag::ENUM, DEFAULT_SEVERITY, CLASS, DiagnosticIDs::SFINAE, NOWERROR, \
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SHOWINSYSHEADER, CATEGORY, GROUP, STR_SIZE(DESC, uint16_t), DESC \
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} \
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,
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#include "clang/Basic/DiagnosticCommonKinds.inc"
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#include "clang/Basic/DiagnosticDriverKinds.inc"
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#include "clang/Basic/DiagnosticFrontendKinds.inc"
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#include "clang/Basic/DiagnosticSerializationKinds.inc"
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#include "clang/Basic/DiagnosticLexKinds.inc"
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#include "clang/Basic/DiagnosticParseKinds.inc"
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#include "clang/Basic/DiagnosticASTKinds.inc"
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#include "clang/Basic/DiagnosticCommentKinds.inc"
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#include "clang/Basic/DiagnosticSemaKinds.inc"
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#include "clang/Basic/DiagnosticAnalysisKinds.inc"
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#undef DIAG
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};
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static const unsigned StaticDiagInfoSize = llvm::array_lengthof(StaticDiagInfo);
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/// GetDiagInfo - Return the StaticDiagInfoRec entry for the specified DiagID,
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/// or null if the ID is invalid.
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static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) {
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// If assertions are enabled, verify that the StaticDiagInfo array is sorted.
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#ifndef NDEBUG
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static bool IsFirst = true; // So the check is only performed on first call.
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if (IsFirst) {
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assert(std::is_sorted(std::begin(StaticDiagInfo),
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std::end(StaticDiagInfo)) &&
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"Diag ID conflict, the enums at the start of clang::diag (in "
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"DiagnosticIDs.h) probably need to be increased");
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IsFirst = false;
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}
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#endif
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// Out of bounds diag. Can't be in the table.
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using namespace diag;
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if (DiagID >= DIAG_UPPER_LIMIT || DiagID <= DIAG_START_COMMON)
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return nullptr;
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// Compute the index of the requested diagnostic in the static table.
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// 1. Add the number of diagnostics in each category preceding the
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// diagnostic and of the category the diagnostic is in. This gives us
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// the offset of the category in the table.
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// 2. Subtract the number of IDs in each category from our ID. This gives us
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// the offset of the diagnostic in the category.
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// This is cheaper than a binary search on the table as it doesn't touch
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// memory at all.
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unsigned Offset = 0;
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unsigned ID = DiagID - DIAG_START_COMMON - 1;
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#define CATEGORY(NAME, PREV) \
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if (DiagID > DIAG_START_##NAME) { \
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Offset += NUM_BUILTIN_##PREV##_DIAGNOSTICS - DIAG_START_##PREV - 1; \
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ID -= DIAG_START_##NAME - DIAG_START_##PREV; \
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}
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CATEGORY(DRIVER, COMMON)
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CATEGORY(FRONTEND, DRIVER)
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CATEGORY(SERIALIZATION, FRONTEND)
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CATEGORY(LEX, SERIALIZATION)
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CATEGORY(PARSE, LEX)
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CATEGORY(AST, PARSE)
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CATEGORY(COMMENT, AST)
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CATEGORY(SEMA, COMMENT)
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CATEGORY(ANALYSIS, SEMA)
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#undef CATEGORY
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// Avoid out of bounds reads.
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if (ID + Offset >= StaticDiagInfoSize)
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return nullptr;
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assert(ID < StaticDiagInfoSize && Offset < StaticDiagInfoSize);
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const StaticDiagInfoRec *Found = &StaticDiagInfo[ID + Offset];
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// If the diag id doesn't match we found a different diag, abort. This can
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// happen when this function is called with an ID that points into a hole in
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// the diagID space.
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if (Found->DiagID != DiagID)
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return nullptr;
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return Found;
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}
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static DiagnosticMapping GetDefaultDiagMapping(unsigned DiagID) {
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DiagnosticMapping Info = DiagnosticMapping::Make(
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diag::Severity::Fatal, /*IsUser=*/false, /*IsPragma=*/false);
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if (const StaticDiagInfoRec *StaticInfo = GetDiagInfo(DiagID)) {
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Info.setSeverity((diag::Severity)StaticInfo->DefaultSeverity);
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if (StaticInfo->WarnNoWerror) {
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assert(Info.getSeverity() == diag::Severity::Warning &&
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"Unexpected mapping with no-Werror bit!");
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Info.setNoWarningAsError(true);
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}
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}
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return Info;
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}
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/// getCategoryNumberForDiag - Return the category number that a specified
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/// DiagID belongs to, or 0 if no category.
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unsigned DiagnosticIDs::getCategoryNumberForDiag(unsigned DiagID) {
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if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
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return Info->Category;
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return 0;
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}
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namespace {
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// The diagnostic category names.
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struct StaticDiagCategoryRec {
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const char *NameStr;
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uint8_t NameLen;
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StringRef getName() const {
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return StringRef(NameStr, NameLen);
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}
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};
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}
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// Unfortunately, the split between DiagnosticIDs and Diagnostic is not
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// particularly clean, but for now we just implement this method here so we can
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// access GetDefaultDiagMapping.
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DiagnosticMapping &
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DiagnosticsEngine::DiagState::getOrAddMapping(diag::kind Diag) {
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std::pair<iterator, bool> Result =
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DiagMap.insert(std::make_pair(Diag, DiagnosticMapping()));
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// Initialize the entry if we added it.
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if (Result.second)
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Result.first->second = GetDefaultDiagMapping(Diag);
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return Result.first->second;
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}
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static const StaticDiagCategoryRec CategoryNameTable[] = {
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#define GET_CATEGORY_TABLE
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#define CATEGORY(X, ENUM) { X, STR_SIZE(X, uint8_t) },
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#include "clang/Basic/DiagnosticGroups.inc"
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#undef GET_CATEGORY_TABLE
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{ nullptr, 0 }
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};
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/// getNumberOfCategories - Return the number of categories
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unsigned DiagnosticIDs::getNumberOfCategories() {
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return llvm::array_lengthof(CategoryNameTable) - 1;
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}
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/// getCategoryNameFromID - Given a category ID, return the name of the
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/// category, an empty string if CategoryID is zero, or null if CategoryID is
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/// invalid.
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StringRef DiagnosticIDs::getCategoryNameFromID(unsigned CategoryID) {
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if (CategoryID >= getNumberOfCategories())
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return StringRef();
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return CategoryNameTable[CategoryID].getName();
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}
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DiagnosticIDs::SFINAEResponse
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DiagnosticIDs::getDiagnosticSFINAEResponse(unsigned DiagID) {
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if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
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return static_cast<DiagnosticIDs::SFINAEResponse>(Info->SFINAE);
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return SFINAE_Report;
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}
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/// getBuiltinDiagClass - Return the class field of the diagnostic.
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///
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static unsigned getBuiltinDiagClass(unsigned DiagID) {
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if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
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return Info->Class;
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return ~0U;
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}
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//===----------------------------------------------------------------------===//
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// Custom Diagnostic information
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//===----------------------------------------------------------------------===//
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namespace clang {
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namespace diag {
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class CustomDiagInfo {
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typedef std::pair<DiagnosticIDs::Level, std::string> DiagDesc;
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std::vector<DiagDesc> DiagInfo;
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std::map<DiagDesc, unsigned> DiagIDs;
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public:
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/// getDescription - Return the description of the specified custom
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/// diagnostic.
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StringRef getDescription(unsigned DiagID) const {
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assert(DiagID - DIAG_UPPER_LIMIT < DiagInfo.size() &&
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"Invalid diagnostic ID");
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return DiagInfo[DiagID-DIAG_UPPER_LIMIT].second;
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}
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/// getLevel - Return the level of the specified custom diagnostic.
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DiagnosticIDs::Level getLevel(unsigned DiagID) const {
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assert(DiagID - DIAG_UPPER_LIMIT < DiagInfo.size() &&
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"Invalid diagnostic ID");
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return DiagInfo[DiagID-DIAG_UPPER_LIMIT].first;
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}
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unsigned getOrCreateDiagID(DiagnosticIDs::Level L, StringRef Message,
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DiagnosticIDs &Diags) {
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DiagDesc D(L, Message);
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// Check to see if it already exists.
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std::map<DiagDesc, unsigned>::iterator I = DiagIDs.lower_bound(D);
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if (I != DiagIDs.end() && I->first == D)
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return I->second;
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// If not, assign a new ID.
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unsigned ID = DiagInfo.size()+DIAG_UPPER_LIMIT;
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DiagIDs.insert(std::make_pair(D, ID));
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DiagInfo.push_back(D);
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return ID;
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}
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};
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} // end diag namespace
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} // end clang namespace
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//===----------------------------------------------------------------------===//
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// Common Diagnostic implementation
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//===----------------------------------------------------------------------===//
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DiagnosticIDs::DiagnosticIDs() { CustomDiagInfo = nullptr; }
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DiagnosticIDs::~DiagnosticIDs() {
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delete CustomDiagInfo;
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}
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/// getCustomDiagID - Return an ID for a diagnostic with the specified message
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/// and level. If this is the first request for this diagnostic, it is
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/// registered and created, otherwise the existing ID is returned.
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///
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/// \param FormatString A fixed diagnostic format string that will be hashed and
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/// mapped to a unique DiagID.
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unsigned DiagnosticIDs::getCustomDiagID(Level L, StringRef FormatString) {
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if (!CustomDiagInfo)
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CustomDiagInfo = new diag::CustomDiagInfo();
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return CustomDiagInfo->getOrCreateDiagID(L, FormatString, *this);
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}
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/// isBuiltinWarningOrExtension - Return true if the unmapped diagnostic
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/// level of the specified diagnostic ID is a Warning or Extension.
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/// This only works on builtin diagnostics, not custom ones, and is not legal to
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/// call on NOTEs.
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bool DiagnosticIDs::isBuiltinWarningOrExtension(unsigned DiagID) {
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return DiagID < diag::DIAG_UPPER_LIMIT &&
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getBuiltinDiagClass(DiagID) != CLASS_ERROR;
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}
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/// \brief Determine whether the given built-in diagnostic ID is a
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/// Note.
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bool DiagnosticIDs::isBuiltinNote(unsigned DiagID) {
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return DiagID < diag::DIAG_UPPER_LIMIT &&
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getBuiltinDiagClass(DiagID) == CLASS_NOTE;
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}
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/// isBuiltinExtensionDiag - Determine whether the given built-in diagnostic
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/// ID is for an extension of some sort. This also returns EnabledByDefault,
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/// which is set to indicate whether the diagnostic is ignored by default (in
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/// which case -pedantic enables it) or treated as a warning/error by default.
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///
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bool DiagnosticIDs::isBuiltinExtensionDiag(unsigned DiagID,
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bool &EnabledByDefault) {
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if (DiagID >= diag::DIAG_UPPER_LIMIT ||
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getBuiltinDiagClass(DiagID) != CLASS_EXTENSION)
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return false;
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EnabledByDefault =
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GetDefaultDiagMapping(DiagID).getSeverity() != diag::Severity::Ignored;
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return true;
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}
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bool DiagnosticIDs::isDefaultMappingAsError(unsigned DiagID) {
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if (DiagID >= diag::DIAG_UPPER_LIMIT)
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return false;
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return GetDefaultDiagMapping(DiagID).getSeverity() >= diag::Severity::Error;
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}
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/// getDescription - Given a diagnostic ID, return a description of the
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/// issue.
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StringRef DiagnosticIDs::getDescription(unsigned DiagID) const {
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if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
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return Info->getDescription();
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assert(CustomDiagInfo && "Invalid CustomDiagInfo");
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return CustomDiagInfo->getDescription(DiagID);
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}
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static DiagnosticIDs::Level toLevel(diag::Severity SV) {
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switch (SV) {
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case diag::Severity::Ignored:
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return DiagnosticIDs::Ignored;
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case diag::Severity::Remark:
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return DiagnosticIDs::Remark;
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case diag::Severity::Warning:
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return DiagnosticIDs::Warning;
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case diag::Severity::Error:
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return DiagnosticIDs::Error;
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case diag::Severity::Fatal:
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return DiagnosticIDs::Fatal;
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}
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llvm_unreachable("unexpected severity");
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}
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/// getDiagnosticLevel - Based on the way the client configured the
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/// DiagnosticsEngine object, classify the specified diagnostic ID into a Level,
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/// by consumable the DiagnosticClient.
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DiagnosticIDs::Level
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DiagnosticIDs::getDiagnosticLevel(unsigned DiagID, SourceLocation Loc,
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const DiagnosticsEngine &Diag) const {
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// Handle custom diagnostics, which cannot be mapped.
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if (DiagID >= diag::DIAG_UPPER_LIMIT) {
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assert(CustomDiagInfo && "Invalid CustomDiagInfo");
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return CustomDiagInfo->getLevel(DiagID);
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}
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unsigned DiagClass = getBuiltinDiagClass(DiagID);
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if (DiagClass == CLASS_NOTE) return DiagnosticIDs::Note;
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return toLevel(getDiagnosticSeverity(DiagID, Loc, Diag));
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}
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/// \brief Based on the way the client configured the Diagnostic
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/// object, classify the specified diagnostic ID into a Level, consumable by
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/// the DiagnosticClient.
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///
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/// \param Loc The source location we are interested in finding out the
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/// diagnostic state. Can be null in order to query the latest state.
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diag::Severity
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DiagnosticIDs::getDiagnosticSeverity(unsigned DiagID, SourceLocation Loc,
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const DiagnosticsEngine &Diag) const {
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assert(getBuiltinDiagClass(DiagID) != CLASS_NOTE);
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// Specific non-error diagnostics may be mapped to various levels from ignored
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// to error. Errors can only be mapped to fatal.
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diag::Severity Result = diag::Severity::Fatal;
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DiagnosticsEngine::DiagStatePointsTy::iterator
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Pos = Diag.GetDiagStatePointForLoc(Loc);
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DiagnosticsEngine::DiagState *State = Pos->State;
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// Get the mapping information, or compute it lazily.
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DiagnosticMapping &Mapping = State->getOrAddMapping((diag::kind)DiagID);
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// TODO: Can a null severity really get here?
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if (Mapping.getSeverity() != diag::Severity())
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Result = Mapping.getSeverity();
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// Upgrade ignored diagnostics if -Weverything is enabled.
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if (Diag.EnableAllWarnings && Result == diag::Severity::Ignored &&
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!Mapping.isUser() && getBuiltinDiagClass(DiagID) != CLASS_REMARK)
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Result = diag::Severity::Warning;
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// Ignore -pedantic diagnostics inside __extension__ blocks.
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// (The diagnostics controlled by -pedantic are the extension diagnostics
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// that are not enabled by default.)
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bool EnabledByDefault = false;
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bool IsExtensionDiag = isBuiltinExtensionDiag(DiagID, EnabledByDefault);
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if (Diag.AllExtensionsSilenced && IsExtensionDiag && !EnabledByDefault)
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return diag::Severity::Ignored;
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// For extension diagnostics that haven't been explicitly mapped, check if we
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// should upgrade the diagnostic.
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if (IsExtensionDiag && !Mapping.isUser())
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Result = std::max(Result, Diag.ExtBehavior);
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// At this point, ignored errors can no longer be upgraded.
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if (Result == diag::Severity::Ignored)
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return Result;
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// Honor -w, which is lower in priority than pedantic-errors, but higher than
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// -Werror.
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if (Result == diag::Severity::Warning && Diag.IgnoreAllWarnings)
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return diag::Severity::Ignored;
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// If -Werror is enabled, map warnings to errors unless explicitly disabled.
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if (Result == diag::Severity::Warning) {
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if (Diag.WarningsAsErrors && !Mapping.hasNoWarningAsError())
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Result = diag::Severity::Error;
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}
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// If -Wfatal-errors is enabled, map errors to fatal unless explicity
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// disabled.
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if (Result == diag::Severity::Error) {
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if (Diag.ErrorsAsFatal && !Mapping.hasNoErrorAsFatal())
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Result = diag::Severity::Fatal;
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}
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// If explicitly requested, map fatal errors to errors.
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if (Result == diag::Severity::Fatal) {
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if (Diag.FatalsAsError)
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Result = diag::Severity::Error;
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}
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// Custom diagnostics always are emitted in system headers.
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bool ShowInSystemHeader =
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!GetDiagInfo(DiagID) || GetDiagInfo(DiagID)->WarnShowInSystemHeader;
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// If we are in a system header, we ignore it. We look at the diagnostic class
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// because we also want to ignore extensions and warnings in -Werror and
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// -pedantic-errors modes, which *map* warnings/extensions to errors.
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if (Diag.SuppressSystemWarnings && !ShowInSystemHeader && Loc.isValid() &&
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Diag.getSourceManager().isInSystemHeader(
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Diag.getSourceManager().getExpansionLoc(Loc)))
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return diag::Severity::Ignored;
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return Result;
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}
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#define GET_DIAG_ARRAYS
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#include "clang/Basic/DiagnosticGroups.inc"
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#undef GET_DIAG_ARRAYS
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namespace {
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struct WarningOption {
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uint16_t NameOffset;
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uint16_t Members;
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uint16_t SubGroups;
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// String is stored with a pascal-style length byte.
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StringRef getName() const {
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return StringRef(DiagGroupNames + NameOffset + 1,
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DiagGroupNames[NameOffset]);
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}
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};
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}
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// Second the table of options, sorted by name for fast binary lookup.
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static const WarningOption OptionTable[] = {
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#define GET_DIAG_TABLE
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#include "clang/Basic/DiagnosticGroups.inc"
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#undef GET_DIAG_TABLE
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};
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/// getWarningOptionForDiag - Return the lowest-level warning option that
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/// enables the specified diagnostic. If there is no -Wfoo flag that controls
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/// the diagnostic, this returns null.
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StringRef DiagnosticIDs::getWarningOptionForDiag(unsigned DiagID) {
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if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
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return OptionTable[Info->getOptionGroupIndex()].getName();
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return StringRef();
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}
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/// Return \c true if any diagnostics were found in this group, even if they
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/// were filtered out due to having the wrong flavor.
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static bool getDiagnosticsInGroup(diag::Flavor Flavor,
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const WarningOption *Group,
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SmallVectorImpl<diag::kind> &Diags) {
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// An empty group is considered to be a warning group: we have empty groups
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// for GCC compatibility, and GCC does not have remarks.
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if (!Group->Members && !Group->SubGroups)
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return Flavor == diag::Flavor::Remark;
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bool NotFound = true;
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// Add the members of the option diagnostic set.
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const int16_t *Member = DiagArrays + Group->Members;
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for (; *Member != -1; ++Member) {
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if (GetDiagInfo(*Member)->getFlavor() == Flavor) {
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NotFound = false;
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Diags.push_back(*Member);
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}
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}
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// Add the members of the subgroups.
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const int16_t *SubGroups = DiagSubGroups + Group->SubGroups;
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for (; *SubGroups != (int16_t)-1; ++SubGroups)
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NotFound &= getDiagnosticsInGroup(Flavor, &OptionTable[(short)*SubGroups],
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Diags);
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return NotFound;
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}
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bool
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DiagnosticIDs::getDiagnosticsInGroup(diag::Flavor Flavor, StringRef Group,
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SmallVectorImpl<diag::kind> &Diags) const {
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auto Found = std::lower_bound(std::begin(OptionTable), std::end(OptionTable),
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Group,
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[](const WarningOption &LHS, StringRef RHS) {
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return LHS.getName() < RHS;
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});
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if (Found == std::end(OptionTable) || Found->getName() != Group)
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return true; // Option not found.
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return ::getDiagnosticsInGroup(Flavor, Found, Diags);
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}
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void DiagnosticIDs::getAllDiagnostics(diag::Flavor Flavor,
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SmallVectorImpl<diag::kind> &Diags) const {
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for (unsigned i = 0; i != StaticDiagInfoSize; ++i)
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if (StaticDiagInfo[i].getFlavor() == Flavor)
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Diags.push_back(StaticDiagInfo[i].DiagID);
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}
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StringRef DiagnosticIDs::getNearestOption(diag::Flavor Flavor,
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StringRef Group) {
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StringRef Best;
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unsigned BestDistance = Group.size() + 1; // Sanity threshold.
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for (const WarningOption &O : OptionTable) {
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// Don't suggest ignored warning flags.
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if (!O.Members && !O.SubGroups)
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continue;
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unsigned Distance = O.getName().edit_distance(Group, true, BestDistance);
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if (Distance > BestDistance)
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continue;
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// Don't suggest groups that are not of this kind.
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llvm::SmallVector<diag::kind, 8> Diags;
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if (::getDiagnosticsInGroup(Flavor, &O, Diags) || Diags.empty())
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continue;
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if (Distance == BestDistance) {
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// Two matches with the same distance, don't prefer one over the other.
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Best = "";
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} else if (Distance < BestDistance) {
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// This is a better match.
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Best = O.getName();
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BestDistance = Distance;
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}
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}
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return Best;
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}
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/// ProcessDiag - This is the method used to report a diagnostic that is
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/// finally fully formed.
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bool DiagnosticIDs::ProcessDiag(DiagnosticsEngine &Diag) const {
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Diagnostic Info(&Diag);
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assert(Diag.getClient() && "DiagnosticClient not set!");
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// Figure out the diagnostic level of this message.
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unsigned DiagID = Info.getID();
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DiagnosticIDs::Level DiagLevel
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= getDiagnosticLevel(DiagID, Info.getLocation(), Diag);
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// Update counts for DiagnosticErrorTrap even if a fatal error occurred
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// or diagnostics are suppressed.
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if (DiagLevel >= DiagnosticIDs::Error) {
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++Diag.TrapNumErrorsOccurred;
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if (isUnrecoverable(DiagID))
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++Diag.TrapNumUnrecoverableErrorsOccurred;
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}
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if (Diag.SuppressAllDiagnostics)
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return false;
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|
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if (DiagLevel != DiagnosticIDs::Note) {
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// Record that a fatal error occurred only when we see a second
|
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// non-note diagnostic. This allows notes to be attached to the
|
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// fatal error, but suppresses any diagnostics that follow those
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// notes.
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if (Diag.LastDiagLevel == DiagnosticIDs::Fatal)
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Diag.FatalErrorOccurred = true;
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|
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Diag.LastDiagLevel = DiagLevel;
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}
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|
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// If a fatal error has already been emitted, silence all subsequent
|
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// diagnostics.
|
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if (Diag.FatalErrorOccurred) {
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if (DiagLevel >= DiagnosticIDs::Error &&
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Diag.Client->IncludeInDiagnosticCounts()) {
|
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++Diag.NumErrors;
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}
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|
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return false;
|
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}
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|
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// If the client doesn't care about this message, don't issue it. If this is
|
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// a note and the last real diagnostic was ignored, ignore it too.
|
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if (DiagLevel == DiagnosticIDs::Ignored ||
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(DiagLevel == DiagnosticIDs::Note &&
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Diag.LastDiagLevel == DiagnosticIDs::Ignored))
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return false;
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|
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if (DiagLevel >= DiagnosticIDs::Error) {
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if (isUnrecoverable(DiagID))
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Diag.UnrecoverableErrorOccurred = true;
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|
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// Warnings which have been upgraded to errors do not prevent compilation.
|
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if (isDefaultMappingAsError(DiagID))
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Diag.UncompilableErrorOccurred = true;
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|
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Diag.ErrorOccurred = true;
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if (Diag.Client->IncludeInDiagnosticCounts()) {
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++Diag.NumErrors;
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}
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|
|
// If we've emitted a lot of errors, emit a fatal error instead of it to
|
|
// stop a flood of bogus errors.
|
|
if (Diag.ErrorLimit && Diag.NumErrors > Diag.ErrorLimit &&
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DiagLevel == DiagnosticIDs::Error) {
|
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Diag.SetDelayedDiagnostic(diag::fatal_too_many_errors);
|
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return false;
|
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}
|
|
}
|
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|
|
// Finally, report it.
|
|
EmitDiag(Diag, DiagLevel);
|
|
return true;
|
|
}
|
|
|
|
void DiagnosticIDs::EmitDiag(DiagnosticsEngine &Diag, Level DiagLevel) const {
|
|
Diagnostic Info(&Diag);
|
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assert(DiagLevel != DiagnosticIDs::Ignored && "Cannot emit ignored diagnostics!");
|
|
|
|
Diag.Client->HandleDiagnostic((DiagnosticsEngine::Level)DiagLevel, Info);
|
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if (Diag.Client->IncludeInDiagnosticCounts()) {
|
|
if (DiagLevel == DiagnosticIDs::Warning)
|
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++Diag.NumWarnings;
|
|
}
|
|
|
|
Diag.CurDiagID = ~0U;
|
|
}
|
|
|
|
bool DiagnosticIDs::isUnrecoverable(unsigned DiagID) const {
|
|
if (DiagID >= diag::DIAG_UPPER_LIMIT) {
|
|
assert(CustomDiagInfo && "Invalid CustomDiagInfo");
|
|
// Custom diagnostics.
|
|
return CustomDiagInfo->getLevel(DiagID) >= DiagnosticIDs::Error;
|
|
}
|
|
|
|
// Only errors may be unrecoverable.
|
|
if (getBuiltinDiagClass(DiagID) < CLASS_ERROR)
|
|
return false;
|
|
|
|
if (DiagID == diag::err_unavailable ||
|
|
DiagID == diag::err_unavailable_message)
|
|
return false;
|
|
|
|
// Currently we consider all ARC errors as recoverable.
|
|
if (isARCDiagnostic(DiagID))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool DiagnosticIDs::isARCDiagnostic(unsigned DiagID) {
|
|
unsigned cat = getCategoryNumberForDiag(DiagID);
|
|
return DiagnosticIDs::getCategoryNameFromID(cat).startswith("ARC ");
|
|
}
|