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//===- PreprocessorLexer.cpp - C Language Family Lexer --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the PreprocessorLexer and Token interfaces.
//
//===----------------------------------------------------------------------===//
#include "clang/Lex/PreprocessorLexer.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/LexDiagnostic.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/Token.h"
#include <cassert>
using namespace clang;
void PreprocessorLexer::anchor() {}
PreprocessorLexer::PreprocessorLexer(Preprocessor *pp, FileID fid)
: PP(pp), FID(fid) {
if (pp)
InitialNumSLocEntries = pp->getSourceManager().local_sloc_entry_size();
}
/// After the preprocessor has parsed a \#include, lex and
/// (potentially) macro expand the filename.
void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) {
assert(ParsingPreprocessorDirective &&
ParsingFilename == false &&
"Must be in a preprocessing directive!");
// We are now parsing a filename!
ParsingFilename = true;
// Lex the filename.
if (LexingRawMode)
IndirectLex(FilenameTok);
else
PP->Lex(FilenameTok);
// We should have obtained the filename now.
ParsingFilename = false;
// No filename?
if (FilenameTok.is(tok::eod))
PP->Diag(FilenameTok.getLocation(), diag::err_pp_expects_filename);
}
/// getFileEntry - Return the FileEntry corresponding to this FileID. Like
/// getFileID(), this only works for lexers with attached preprocessors.
const FileEntry *PreprocessorLexer::getFileEntry() const {
return PP->getSourceManager().getFileEntryForID(getFileID());
}
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