52 lines · cpp
1//===- PreprocessorLexer.cpp - C Language Family Lexer --------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements the PreprocessorLexer and Token interfaces.10//11//===----------------------------------------------------------------------===//12 13#include "clang/Lex/PreprocessorLexer.h"14#include "clang/Basic/SourceManager.h"15#include "clang/Lex/Preprocessor.h"16#include "clang/Lex/Token.h"17#include <cassert>18 19using namespace clang;20 21void PreprocessorLexer::anchor() {}22 23PreprocessorLexer::PreprocessorLexer(Preprocessor *pp, FileID fid)24 : PP(pp), FID(fid) {25 if (pp)26 InitialNumSLocEntries = pp->getSourceManager().local_sloc_entry_size();27}28 29/// After the preprocessor has parsed a \#include, lex and30/// (potentially) macro expand the filename.31void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) {32 assert(ParsingFilename == false && "reentered LexIncludeFilename");33 34 // We are now parsing a filename!35 ParsingFilename = true;36 37 // Lex the filename.38 if (LexingRawMode)39 IndirectLex(FilenameTok);40 else41 PP->Lex(FilenameTok);42 43 // We should have obtained the filename now.44 ParsingFilename = false;45}46 47/// getFileEntry - Return the FileEntry corresponding to this FileID. Like48/// getFileID(), this only works for lexers with attached preprocessors.49OptionalFileEntryRef PreprocessorLexer::getFileEntry() const {50 return PP->getSourceManager().getFileEntryRefForID(getFileID());51}52