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/LexDiagnostic.h" 16#include "clang/Lex/Preprocessor.h" 17#include "clang/Lex/Token.h" 18#include <cassert> 19 20using namespace clang; 21 22void PreprocessorLexer::anchor() {} 23 24PreprocessorLexer::PreprocessorLexer(Preprocessor *pp, FileID fid) 25 : PP(pp), FID(fid) { 26 if (pp) 27 InitialNumSLocEntries = pp->getSourceManager().local_sloc_entry_size(); 28} 29 30/// After the preprocessor has parsed a \#include, lex and 31/// (potentially) macro expand the filename. 32void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) { 33 assert(ParsingFilename == false && "reentered LexIncludeFilename"); 34 35 // We are now parsing a filename! 36 ParsingFilename = true; 37 38 // Lex the filename. 39 if (LexingRawMode) 40 IndirectLex(FilenameTok); 41 else 42 PP->Lex(FilenameTok); 43 44 // We should have obtained the filename now. 45 ParsingFilename = false; 46} 47 48/// getFileEntry - Return the FileEntry corresponding to this FileID. Like 49/// getFileID(), this only works for lexers with attached preprocessors. 50const FileEntry *PreprocessorLexer::getFileEntry() const { 51 return PP->getSourceManager().getFileEntryForID(getFileID()); 52} 53