b492ec5899
This implements the result of the discussion at: https://discourse.llvm.org/t/rfc-report-fatal-error-and-the-default-value-of-gencrashdialog/73587 There are two different use cases for report_fatal_error, so replace it with two functions reportFatalInternalError() and reportFatalUsageError(). The former indicates a bug in LLVM and generates a crash dialog. The latter does not. The names have been suggested by rnk and people seemed to like them. This replaces a lot of the usages that passed an explicit value for GenCrashDiag. I did not bulk replace remaining report_fatal_error usage -- they probably require case by case review for which function to use.
137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
//===- ExternalASTSource.cpp - Abstract External AST Interface ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides the default implementation of the ExternalASTSource
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// interface, which enables construction of AST nodes from some external
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// source.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ExternalASTSource.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/DeclarationName.h"
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#include "clang/Basic/ASTSourceDescriptor.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/LLVM.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <cstdint>
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#include <optional>
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using namespace clang;
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char ExternalASTSource::ID;
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ExternalASTSource::~ExternalASTSource() = default;
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std::optional<ASTSourceDescriptor>
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ExternalASTSource::getSourceDescriptor(unsigned ID) {
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return std::nullopt;
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}
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ExternalASTSource::ExtKind
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ExternalASTSource::hasExternalDefinitions(const Decl *D) {
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return EK_ReplyHazy;
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}
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bool ExternalASTSource::wasThisDeclarationADefinition(const FunctionDecl *FD) {
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return false;
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}
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void ExternalASTSource::FindFileRegionDecls(FileID File, unsigned Offset,
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unsigned Length,
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SmallVectorImpl<Decl *> &Decls) {}
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void ExternalASTSource::CompleteRedeclChain(const Decl *D) {}
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void ExternalASTSource::CompleteType(TagDecl *Tag) {}
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void ExternalASTSource::CompleteType(ObjCInterfaceDecl *Class) {}
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void ExternalASTSource::ReadComments() {}
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void ExternalASTSource::StartedDeserializing() {}
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void ExternalASTSource::FinishedDeserializing() {}
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void ExternalASTSource::StartTranslationUnit(ASTConsumer *Consumer) {}
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void ExternalASTSource::PrintStats() {}
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bool ExternalASTSource::layoutRecordType(
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const RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
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llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
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llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
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llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets) {
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return false;
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}
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Decl *ExternalASTSource::GetExternalDecl(GlobalDeclID ID) { return nullptr; }
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Selector ExternalASTSource::GetExternalSelector(uint32_t ID) {
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return Selector();
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}
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uint32_t ExternalASTSource::GetNumExternalSelectors() {
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return 0;
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}
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Stmt *ExternalASTSource::GetExternalDeclStmt(uint64_t Offset) {
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return nullptr;
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}
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CXXCtorInitializer **
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ExternalASTSource::GetExternalCXXCtorInitializers(uint64_t Offset) {
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return nullptr;
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}
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CXXBaseSpecifier *
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ExternalASTSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
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return nullptr;
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}
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bool ExternalASTSource::FindExternalVisibleDeclsByName(
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const DeclContext *DC, DeclarationName Name,
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const DeclContext *OriginalDC) {
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return false;
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}
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bool ExternalASTSource::LoadExternalSpecializations(const Decl *D, bool) {
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return false;
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}
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bool ExternalASTSource::LoadExternalSpecializations(
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const Decl *D, ArrayRef<TemplateArgument>) {
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return false;
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}
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void ExternalASTSource::completeVisibleDeclsMap(const DeclContext *DC) {}
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void ExternalASTSource::FindExternalLexicalDecls(
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const DeclContext *DC, llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
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SmallVectorImpl<Decl *> &Result) {}
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void ExternalASTSource::getMemoryBufferSizes(MemoryBufferSizes &sizes) const {}
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uint32_t ExternalASTSource::incrementGeneration(ASTContext &C) {
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uint32_t OldGeneration = CurrentGeneration;
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// Make sure the generation of the topmost external source for the context is
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// incremented. That might not be us.
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auto *P = C.getExternalSource();
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if (P && P != this)
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CurrentGeneration = P->incrementGeneration(C);
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else {
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// FIXME: Only bump the generation counter if the current generation number
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// has been observed?
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if (!++CurrentGeneration)
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llvm::reportFatalUsageError("generation counter overflowed");
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}
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return OldGeneration;
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}
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