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-exception 6 // 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 19 using namespace clang; 20 21 void PreprocessorLexer::anchor() {} 22 23 PreprocessorLexer::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 and 30 /// (potentially) macro expand the filename. 31 void 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 else 41 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. Like 48 /// getFileID(), this only works for lexers with attached preprocessors. 49 OptionalFileEntryRef PreprocessorLexer::getFileEntry() const { 50 return PP->getSourceManager().getFileEntryRefForID(getFileID()); 51 } 52