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(Result&: FilenameTok);
41 else
42 PP->Lex(Result&: 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.
50OptionalFileEntryRef PreprocessorLexer::getFileEntry() const {
51 return PP->getSourceManager().getFileEntryRefForID(FID: getFileID());
52}
53