1 //===--- PreprocessorLexer.cpp - C Language Family Lexer ------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 //  This file implements the PreprocessorLexer and Token interfaces.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/Lex/PreprocessorLexer.h"
15 #include "clang/Lex/Preprocessor.h"
16 #include "clang/Basic/Diagnostic.h"
17 #include "clang/Basic/SourceManager.h"
18 
19 using namespace clang;
20 
21 PreprocessorLexer::~PreprocessorLexer() {}
22 
23 void PreprocessorLexer::Diag(SourceLocation Loc, unsigned DiagID,
24                              const std::string &Msg) const {
25   if (LexingRawMode && Diagnostic::isBuiltinNoteWarningOrExtension(DiagID))
26     return;
27   PP->Diag(Loc, DiagID) << Msg;
28 }
29 
30 /// LexIncludeFilename - After the preprocessor has parsed a #include, lex and
31 /// (potentially) macro expand the filename.
32 void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) {
33   assert(ParsingPreprocessorDirective &&
34          ParsingFilename == false &&
35          "Must be in a preprocessing directive!");
36 
37   // We are now parsing a filename!
38   ParsingFilename = true;
39 
40   // Lex the filename.
41   IndirectLex(FilenameTok);
42 
43   // We should have obtained the filename now.
44   ParsingFilename = false;
45 
46   // No filename?
47   if (FilenameTok.is(tok::eom))
48     Diag(FilenameTok.getLocation(), diag::err_pp_expects_filename);
49 }
50