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clang/include/clang/Lex/PreprocessorLexer.h
| //===- PreprocessorLexer.h - C Language Family Lexer ------------*- C++ -*-===// | //===- PreprocessorLexer.h - C Language Family Lexer ------------*- C++ -*-===// | ||||
| // | // | ||||
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||
| // See https://llvm.org/LICENSE.txt for license information. | // See https://llvm.org/LICENSE.txt for license information. | ||||
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||
| // | // | ||||
| //===----------------------------------------------------------------------===// | //===----------------------------------------------------------------------===// | ||||
| // | // | ||||
| /// \file | /// \file | ||||
| /// Defines the PreprocessorLexer interface. | /// Defines the PreprocessorLexer interface. | ||||
| // | // | ||||
| //===----------------------------------------------------------------------===// | //===----------------------------------------------------------------------===// | ||||
| #ifndef LLVM_CLANG_LEX_PREPROCESSORLEXER_H | #ifndef LLVM_CLANG_LEX_PREPROCESSORLEXER_H | ||||
| #define LLVM_CLANG_LEX_PREPROCESSORLEXER_H | #define LLVM_CLANG_LEX_PREPROCESSORLEXER_H | ||||
| #include "clang/Basic/SourceLocation.h" | |||||
| #include "clang/Lex/HeaderSearch.h" | |||||
| #include "clang/Lex/MultipleIncludeOpt.h" | #include "clang/Lex/MultipleIncludeOpt.h" | ||||
| #include "clang/Lex/Token.h" | #include "clang/Lex/Token.h" | ||||
| #include "clang/Basic/SourceLocation.h" | |||||
| #include "llvm/ADT/ArrayRef.h" | #include "llvm/ADT/ArrayRef.h" | ||||
| #include "llvm/ADT/SmallVector.h" | #include "llvm/ADT/SmallVector.h" | ||||
| #include "llvm/ADT/StringMap.h" | |||||
| #include <cassert> | #include <cassert> | ||||
| namespace clang { | namespace clang { | ||||
| class FileEntry; | class FileEntry; | ||||
| class Preprocessor; | class Preprocessor; | ||||
| class PreprocessorLexer { | class PreprocessorLexer { | ||||
| Show All 39 Lines | protected: | ||||
| /// A state machine that detects the \#ifndef-wrapping a file | /// A state machine that detects the \#ifndef-wrapping a file | ||||
| /// idiom for the multiple-include optimization. | /// idiom for the multiple-include optimization. | ||||
| MultipleIncludeOpt MIOpt; | MultipleIncludeOpt MIOpt; | ||||
| /// Information about the set of \#if/\#ifdef/\#ifndef blocks | /// Information about the set of \#if/\#ifdef/\#ifndef blocks | ||||
| /// we are currently in. | /// we are currently in. | ||||
| SmallVector<PPConditionalInfo, 4> ConditionalStack; | SmallVector<PPConditionalInfo, 4> ConditionalStack; | ||||
| struct IncludeInfo { | |||||
| const FileEntry *File; | |||||
| SourceLocation Location; | |||||
| }; | |||||
| // A complete history of all the files included by the current file. | |||||
| llvm::StringMap<IncludeInfo> IncludeHistory; | |||||
| PreprocessorLexer() : FID() {} | PreprocessorLexer() : FID() {} | ||||
| PreprocessorLexer(Preprocessor *pp, FileID fid); | PreprocessorLexer(Preprocessor *pp, FileID fid); | ||||
| virtual ~PreprocessorLexer() = default; | virtual ~PreprocessorLexer() = default; | ||||
| virtual void IndirectLex(Token& Result) = 0; | virtual void IndirectLex(Token& Result) = 0; | ||||
| /// Return the source location for the next observable location. | /// Return the source location for the next observable location. | ||||
| virtual SourceLocation getSourceLocation() = 0; | virtual SourceLocation getSourceLocation() = 0; | ||||
| ▲ Show 20 Lines • Show All 85 Lines • ▼ Show 20 Lines | public: | ||||
| conditional_iterator conditional_end() const { | conditional_iterator conditional_end() const { | ||||
| return ConditionalStack.end(); | return ConditionalStack.end(); | ||||
| } | } | ||||
| void setConditionalLevels(ArrayRef<PPConditionalInfo> CL) { | void setConditionalLevels(ArrayRef<PPConditionalInfo> CL) { | ||||
| ConditionalStack.clear(); | ConditionalStack.clear(); | ||||
| ConditionalStack.append(CL.begin(), CL.end()); | ConditionalStack.append(CL.begin(), CL.end()); | ||||
| } | } | ||||
| void addInclude(const StringRef Filename, const FileEntry &File, | |||||
| const SourceLocation Location) { | |||||
aaron.ballman: It's not wrong, but we don't usually do top-level `const` qualification of value types. | |||||
| IncludeHistory.insert({Filename, {&File, Location}}); | |||||
| } | |||||
| const llvm::StringMap<IncludeInfo> &getIncludeHistory() const { | |||||
| return IncludeHistory; | |||||
| } | |||||
| }; | }; | ||||
| } // namespace clang | } // namespace clang | ||||
| #endif // LLVM_CLANG_LEX_PREPROCESSORLEXER_H | #endif // LLVM_CLANG_LEX_PREPROCESSORLEXER_H | ||||
It's not wrong, but we don't usually do top-level const qualification of value types.