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// Copyright (C) 2011-2018 ycmd contributors
//
// This file is part of ycmd.
//
// ycmd 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.
//
// ycmd 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 ycmd. If not, see <http://www.gnu.org/licenses/>.
#include "PythonSupport.h"
#include "Candidate.h"
#include "Repository.h"
#include "Result.h"
#include "Utils.h"
#include <utility>
#include <vector>
namespace YouCompleteMe {
namespace {
std::vector< const Candidate * > CandidatesFromObjectList(
const pybind11::list& candidates,
pybind11::str candidate_property,
size_t num_candidates ) {
std::vector< std::string > candidate_strings( num_candidates );
auto it = candidate_strings.begin();
if ( !PyUnicode_GET_LENGTH( candidate_property.ptr() ) ) {
for ( size_t i = 0; i < num_candidates; ++i ) {
*it++ = GetUtf8String( PyList_GET_ITEM( candidates.ptr(), i ) );
}
} else {
for ( size_t i = 0; i < num_candidates; ++i ) {
auto element = PyDict_GetItem( PyList_GET_ITEM( candidates.ptr(), i ),
candidate_property.ptr() );
*it++ = GetUtf8String( element );
}
}
return Repository< Candidate >::Instance().GetElements(
std::move( candidate_strings ) );
}
} // unnamed namespace
pybind11::list FilterAndSortCandidates(
const pybind11::list& candidates,
pybind11::str candidate_property,
std::string& query,
const size_t max_candidates ) {
auto num_candidates = size_t( PyList_GET_SIZE( candidates.ptr() ) );
std::vector< const Candidate * > repository_candidates =
CandidatesFromObjectList( candidates,
std::move( candidate_property ),
num_candidates );
std::vector< ResultAnd< size_t > > result_and_objects;
{
pybind11::gil_scoped_release unlock;
Word query_object( std::move( query ) );
for ( size_t i = 0; i < num_candidates; ++i ) {
const Candidate *candidate = repository_candidates[ i ];
if ( candidate->IsEmpty() || !candidate->ContainsBytes( query_object ) ) {
continue;
}
Result result = candidate->QueryMatchResult( query_object );
if ( result.IsSubsequence() ) {
result_and_objects.emplace_back( result, i );
}
}
PartialSort( result_and_objects, max_candidates );
}
pybind11::list filtered_candidates( result_and_objects.size() );
for ( size_t i = 0; i < result_and_objects.size(); ++i ) {
auto new_candidate = PyList_GET_ITEM(
candidates.ptr(),
result_and_objects[ i ].extra_object_ );
Py_INCREF( new_candidate );
PyList_SET_ITEM( filtered_candidates.ptr(), i, new_candidate );
}
return filtered_candidates;
}
std::string GetUtf8String( pybind11::handle value ) {
// If already a unicode or string (or something derived from it)
// pybind will already convert to utf8 when converting to std::string.
// For `bytes` the contents are left untouched:
if ( PyUnicode_CheckExact( value.ptr() ) ) {
ptrdiff_t size = 0;
const char* buffer = nullptr;
buffer = PyUnicode_AsUTF8AndSize( value.ptr(), &size );
return { buffer, static_cast< size_t >( size ) };
}
if ( PyBytes_CheckExact( value.ptr() ) ) {
ptrdiff_t size = 0;
char* buffer = nullptr;
PyBytes_AsStringAndSize( value.ptr(), &buffer, &size );
return { buffer, static_cast< size_t >( size ) };
}
// Otherwise go through Python's built-in `str`.
pybind11::str keep_alive( value );
ptrdiff_t size = 0;
const char* buffer =
PyUnicode_AsUTF8AndSize( keep_alive.ptr(), &size );
return { buffer, static_cast< size_t >( size ) };
}
} // namespace YouCompleteMe
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