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// This file is part of the AspectC++ compiler 'ac++'.
// Copyright (C) 1999-2003 The 'ac++' developers (see aspectc.org)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free
// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
// MA 02111-1307 USA
#include "ClangPreprocessor.h"
#include "IncludeGraph.h"
#include "IntroductionUnit.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Lex/Preprocessor.h"
using namespace clang;
ClangPreprocessor::ClangPreprocessor (const string &tunit_name,
ACConfig &conf, IncludeGraph &include_graph, ACProject &project) :
_conf(conf), _project(project), _tunit_name(tunit_name) {
CompilerInstance &CI = *_project.get_compiler_instance();
#if (CLANG_VERSION_MAJOR == 3 && CLANG_VERSION_MINOR == 4 && !defined(CLANG_VERSION_PATCHLEVEL)) || \
(CLANG_VERSION_MAJOR == 3 && CLANG_VERSION_MINOR == 4 && CLANG_VERSION_PATCHLEVEL == 2)
CI.createPreprocessor();
#else // C++ 11 interface
CI.createPreprocessor(clang::TU_Complete);
#endif
Preprocessor &PP = CI.getPreprocessor();
CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), &PP);
#if FRONTEND_CLANG < 38
PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(),
PP.getLangOpts());
#else
// new interface (lowercase 'I')
PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(),
PP.getLangOpts());
#endif
CI.InitializeSourceManager(FrontendInputFile(tunit_name, IK_CXX));
PP.EnterMainSourceFile();
#if (CLANG_VERSION_MAJOR == 3 && CLANG_VERSION_MINOR == 4 && !defined(CLANG_VERSION_PATCHLEVEL)) || \
(CLANG_VERSION_MAJOR == 3 && CLANG_VERSION_MINOR == 4 && CLANG_VERSION_PATCHLEVEL == 2)
PP.addPPCallbacks(new IncludeGraph::IncludeGraphCallback(include_graph));
#else // C++ 11 interface
PP.addPPCallbacks(std::unique_ptr<IncludeGraph::IncludeGraphCallback>(new IncludeGraph::IncludeGraphCallback(include_graph)));
#endif
next_token();
}
ClangPreprocessor::~ClangPreprocessor () {
CompilerInstance &CI = *_project.get_compiler_instance();
CI.getDiagnosticClient().EndSourceFile();
CI.getPreprocessor().EndSourceFile();
}
bool ClangPreprocessor::keywords_enabled (clang::SourceLocation loc) const {
SourceManager &SM = _project.get_compiler_instance()->getSourceManager();
ACFileID funit = SM.getFileEntryForID(SM.getFileID(SM.getExpansionLoc (loc)));
if (!funit.is_valid() || !_project.isBelow(funit.name().c_str ()))
return false;
string name = funit.name ();
size_t len = name.length();
if (len > 2 && strcmp (name.c_str () + (len - 3), ".ah") == 0)
return true;
return _conf.keywords();
}
ACErrorStream &ClangPreprocessor::err () const {
return _project.err ();
}
ACToken ClangPreprocessor::next_token () {
Preprocessor &PP = _project.get_compiler_instance()->getPreprocessor();
clang::Token tok;
PP.Lex(tok);
_current_token = ACToken(tok, keywords_enabled(tok.getLocation()));
if (!_recorded_tokens.empty())
_recorded_tokens.push_back(_current_token);
return _current_token;
}
ACToken ClangPreprocessor::curr_token () {
return _current_token;
}
ACToken ClangPreprocessor::look_ahead (int n) {
Preprocessor &PP = _project.get_compiler_instance()->getPreprocessor();
clang::Token Tok(PP.LookAhead(n - 1));
return ACToken(Tok, keywords_enabled(Tok.getLocation()));
}
// functions to record the token stream
void ClangPreprocessor::start_recording () {
if (_recorded_tokens.empty())
_recorded_tokens.push_back(curr_token());
}
ClangPreprocessor::TokenVector ClangPreprocessor::stop_recording () {
TokenVector result;
std::swap(result, _recorded_tokens);
return result;
}
ACFileID ClangPreprocessor::source_unit (ACToken token) const {
SourceManager &SM = _project.get_compiler_instance()->getSourceManager();
return SM.getFileEntryForID(SM.getFileID(SM.getExpansionLoc (token.location ())));
}
// check whether a token is located within the files of the project
bool ClangPreprocessor::is_in_project(ACToken token) const {
ACFileID funit = source_unit(token);
return funit.is_valid() && _project.isBelow(funit.name().c_str ());
}
std::string ClangPreprocessor::token_text (ACToken tok) const {
Preprocessor &PP = _project.get_compiler_instance()->getPreprocessor();
return PP.getSpelling(tok.get());
}
unsigned ClangPreprocessor::token_line_number (ACToken tok) const {
SourceManager &SM = _project.get_compiler_instance()->getSourceManager();
return SM.getPresumedLineNumber(tok.location());
}
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