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// Copyright (C) 2011-2013 Google Inc.
//
// This file is part of YouCompleteMe.
//
// YouCompleteMe 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 3 of the License, or
// (at your option) any later version.
//
// YouCompleteMe 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 YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
#include "ClangCompleter.h"
#include "exceptions.h"
#include "Result.h"
#include "Candidate.h"
#include "TranslationUnit.h"
#include "standard.h"
#include "CandidateRepository.h"
#include "CompletionData.h"
#include "Utils.h"
#include "ClangUtils.h"
#include "ReleaseGil.h"
#include <clang-c/Index.h>
#include <boost/shared_ptr.hpp>
using boost::shared_ptr;
using boost::unordered_map;
namespace YouCompleteMe {
ClangCompleter::ClangCompleter()
: clang_index_( clang_createIndex( 0, 0 ) ),
translation_unit_store_( clang_index_ ) {
// The libclang docs don't say what is the default value for crash recovery.
// I'm pretty sure it's turned on by default, but I'm not going to take any
// chances.
clang_toggleCrashRecovery( true );
}
ClangCompleter::~ClangCompleter() {
// We need to destroy all TUs before calling clang_disposeIndex because
// the translation units need to be destroyed before the index is destroyed.
// Technically, a thread could still be holding onto a shared_ptr<TU> object
// when we destroy the clang index, but since we're shutting down, we don't
// really care.
// In practice, this situation shouldn't happen because the server threads are
// Python deamon threads and will all be killed before the main thread exits.
translation_unit_store_.RemoveAll();
clang_disposeIndex( clang_index_ );
}
bool ClangCompleter::UpdatingTranslationUnit( const std::string &filename ) {
ReleaseGil unlock;
shared_ptr< TranslationUnit > unit = translation_unit_store_.Get( filename );
if ( !unit )
return false;
// Thankfully, an invalid, sentinel TU always returns true for
// IsCurrentlyUpdating, so no caller will try to rely on the TU object, even
// if unit is currently pointing to a sentinel.
return unit->IsCurrentlyUpdating();
}
std::vector< Diagnostic > ClangCompleter::UpdateTranslationUnit(
const std::string &filename,
const std::vector< UnsavedFile > &unsaved_files,
const std::vector< std::string > &flags ) {
ReleaseGil unlock;
bool translation_unit_created;
shared_ptr< TranslationUnit > unit = translation_unit_store_.GetOrCreate(
filename,
unsaved_files,
flags,
translation_unit_created );
if ( !unit )
return std::vector< Diagnostic >();
try {
// There's no point in reparsing a TU that was just created, it was just
// parsed in the TU constructor
if ( !translation_unit_created )
return unit->Reparse( unsaved_files );
return unit->LatestDiagnostics();
}
catch ( ClangParseError & ) {
// If unit->Reparse fails, then the underlying TranslationUnit object is not
// valid anymore and needs to be destroyed and removed from the filename ->
// TU map.
translation_unit_store_.Remove( filename );
}
return std::vector< Diagnostic >();
}
std::vector< CompletionData >
ClangCompleter::CandidatesForLocationInFile(
const std::string &filename,
int line,
int column,
const std::vector< UnsavedFile > &unsaved_files,
const std::vector< std::string > &flags ) {
ReleaseGil unlock;
shared_ptr< TranslationUnit > unit =
translation_unit_store_.GetOrCreate( filename, unsaved_files, flags );
if ( !unit )
return std::vector< CompletionData >();
return unit->CandidatesForLocation( line,
column,
unsaved_files );
}
Location ClangCompleter::GetDeclarationLocation(
const std::string &filename,
int line,
int column,
const std::vector< UnsavedFile > &unsaved_files,
const std::vector< std::string > &flags ) {
ReleaseGil unlock;
shared_ptr< TranslationUnit > unit =
translation_unit_store_.GetOrCreate( filename, unsaved_files, flags );
if ( !unit ) {
return Location();
}
return unit->GetDeclarationLocation( line, column, unsaved_files );
}
Location ClangCompleter::GetDefinitionLocation(
const std::string &filename,
int line,
int column,
const std::vector< UnsavedFile > &unsaved_files,
const std::vector< std::string > &flags ) {
ReleaseGil unlock;
shared_ptr< TranslationUnit > unit =
translation_unit_store_.GetOrCreate( filename, unsaved_files, flags );
if ( !unit ) {
return Location();
}
return unit->GetDefinitionLocation( line, column, unsaved_files );
}
void ClangCompleter::DeleteCachesForFile( const std::string &filename ) {
ReleaseGil unlock;
translation_unit_store_.Remove( filename );
}
} // namespace YouCompleteMe
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