1 //===--- PreprocessorLexer.cpp - C Language Family Lexer ------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the PreprocessorLexer and Token interfaces.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Lex/PreprocessorLexer.h"
15 #include "clang/Lex/Preprocessor.h"
16 #include "clang/Lex/LexDiagnostic.h"
17 #include "clang/Basic/SourceManager.h"
18 using namespace clang;
20 PreprocessorLexer::PreprocessorLexer(Preprocessor *pp, FileID fid)
21 : PP(pp), FID(fid), InitialNumSLocEntries(0),
22 ParsingPreprocessorDirective(false),
23 ParsingFilename(false), LexingRawMode(false) {
25 InitialNumSLocEntries = pp->getSourceManager().local_sloc_entry_size();
28 /// LexIncludeFilename - After the preprocessor has parsed a #include, lex and
29 /// (potentially) macro expand the filename.
30 void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) {
31 assert(ParsingPreprocessorDirective &&
32 ParsingFilename == false &&
33 "Must be in a preprocessing directive!");
35 // We are now parsing a filename!
36 ParsingFilename = true;
39 IndirectLex(FilenameTok);
41 // We should have obtained the filename now.
42 ParsingFilename = false;
45 if (FilenameTok.is(tok::eod))
46 PP->Diag(FilenameTok.getLocation(), diag::err_pp_expects_filename);
49 /// getFileEntry - Return the FileEntry corresponding to this FileID. Like
50 /// getFileID(), this only works for lexers with attached preprocessors.
51 const FileEntry *PreprocessorLexer::getFileEntry() const {
52 return PP->getSourceManager().getFileEntryForID(getFileID());