/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define C_LUCY_TERMMATCHER
#include "Lucy/Util/ToolSet.h"
#include "Lucy/Search/TermMatcher.h"
#include "Lucy/Index/Posting.h"
#include "Lucy/Index/PostingList.h"
#include "Lucy/Index/Similarity.h"
#include "Lucy/Search/Compiler.h"
TermMatcher*
TermMatcher_init(TermMatcher *self, Similarity *similarity, PostingList *plist,
Compiler *compiler) {
Matcher_init((Matcher*)self);
// Assign.
self->sim = (Similarity*)INCREF(similarity);
self->plist = (PostingList*)INCREF(plist);
self->compiler = (Compiler*)INCREF(compiler);
self->weight = Compiler_Get_Weight(compiler);
// Init.
self->posting = NULL;
return self;
}
void
TermMatcher_destroy(TermMatcher *self) {
DECREF(self->sim);
DECREF(self->plist);
DECREF(self->compiler);
SUPER_DESTROY(self, TERMMATCHER);
}
int32_t
TermMatcher_next(TermMatcher* self) {
PostingList *const plist = self->plist;
if (plist) {
int32_t doc_id = PList_Next(plist);
if (doc_id) {
self->posting = PList_Get_Posting(plist);
return doc_id;
}
else {
// Reclaim resources a little early.
DECREF(plist);
self->plist = NULL;
return 0;
}
}
return 0;
}
int32_t
TermMatcher_advance(TermMatcher *self, int32_t target) {
PostingList *const plist = self->plist;
if (plist) {
int32_t doc_id = PList_Advance(plist, target);
if (doc_id) {
self->posting = PList_Get_Posting(plist);
return doc_id;
}
else {
// Reclaim resources a little early.
DECREF(plist);
self->plist = NULL;
return 0;
}
}
return 0;
}
int32_t
TermMatcher_get_doc_id(TermMatcher* self) {
return Post_Get_Doc_ID(self->posting);
}