PreprocessorLexer.cpp revision d6a2e7d71e9a910c45a3eb0268a5d94635003d58 
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
19using namespace clang;
20
21PreprocessorLexer::~PreprocessorLexer() {}
22
23void 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.
32void 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