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b9b05100c5
tokens. We now actually form an angled_string_literal token for a header name by concatenation rather than just working out what its contents would be. This substantially simplifies downstream processing and is necessary for C++20 header unit imports. llvm-svn: 356433
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
//===- PreprocessorLexer.cpp - C Language Family Lexer --------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the PreprocessorLexer and Token interfaces.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Lex/PreprocessorLexer.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Lex/LexDiagnostic.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Lex/Token.h"
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#include <cassert>
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using namespace clang;
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void PreprocessorLexer::anchor() {}
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PreprocessorLexer::PreprocessorLexer(Preprocessor *pp, FileID fid)
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: PP(pp), FID(fid) {
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if (pp)
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InitialNumSLocEntries = pp->getSourceManager().local_sloc_entry_size();
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}
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/// After the preprocessor has parsed a \#include, lex and
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/// (potentially) macro expand the filename.
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void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) {
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assert(ParsingFilename == false && "reentered LexIncludeFilename");
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// We are now parsing a filename!
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ParsingFilename = true;
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// Lex the filename.
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if (LexingRawMode)
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IndirectLex(FilenameTok);
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else
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PP->Lex(FilenameTok);
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// We should have obtained the filename now.
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ParsingFilename = false;
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}
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/// getFileEntry - Return the FileEntry corresponding to this FileID. Like
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/// getFileID(), this only works for lexers with attached preprocessors.
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const FileEntry *PreprocessorLexer::getFileEntry() const {
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return PP->getSourceManager().getFileEntryForID(getFileID());
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}
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