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