1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "LatinIME: jni: Session"
18
19#include "com_android_inputmethod_latin_DicTraverseSession.h"
20
21#include "defines.h"
22#include "dictionary/property/ngram_context.h"
23#include "jni.h"
24#include "jni_common.h"
25#include "suggest/core/session/dic_traverse_session.h"
26
27namespace latinime {
28class Dictionary;
29static jlong latinime_setDicTraverseSession(JNIEnv *env, jclass clazz, jstring localeJStr,
30        jlong dictSize) {
31    void *traverseSession = DicTraverseSession::getSessionInstance(env, localeJStr, dictSize);
32    return reinterpret_cast<jlong>(traverseSession);
33}
34
35static void latinime_initDicTraverseSession(JNIEnv *env, jclass clazz, jlong traverseSession,
36        jlong dictionary, jintArray previousWord, jint previousWordLength) {
37    DicTraverseSession *ts = reinterpret_cast<DicTraverseSession *>(traverseSession);
38    if (!ts) {
39        return;
40    }
41    Dictionary *dict = reinterpret_cast<Dictionary *>(dictionary);
42    if (!previousWord) {
43        NgramContext emptyNgramContext;
44        ts->init(dict, &emptyNgramContext, 0 /* suggestOptions */);
45        return;
46    }
47    int prevWord[previousWordLength];
48    env->GetIntArrayRegion(previousWord, 0, previousWordLength, prevWord);
49    NgramContext ngramContext(prevWord, previousWordLength, false /* isStartOfSentence */);
50    ts->init(dict, &ngramContext, 0 /* suggestOptions */);
51}
52
53static void latinime_releaseDicTraverseSession(JNIEnv *env, jclass clazz, jlong traverseSession) {
54    DicTraverseSession *ts = reinterpret_cast<DicTraverseSession *>(traverseSession);
55    DicTraverseSession::releaseSessionInstance(ts);
56}
57
58static const JNINativeMethod sMethods[] = {
59    {
60        const_cast<char *>("setDicTraverseSessionNative"),
61        const_cast<char *>("(Ljava/lang/String;J)J"),
62        reinterpret_cast<void *>(latinime_setDicTraverseSession)
63    },
64    {
65        const_cast<char *>("initDicTraverseSessionNative"),
66        const_cast<char *>("(JJ[II)V"),
67        reinterpret_cast<void *>(latinime_initDicTraverseSession)
68    },
69    {
70        const_cast<char *>("releaseDicTraverseSessionNative"),
71        const_cast<char *>("(J)V"),
72        reinterpret_cast<void *>(latinime_releaseDicTraverseSession)
73    }
74};
75
76int register_DicTraverseSession(JNIEnv *env) {
77    const char *const kClassPathName = "com/android/inputmethod/latin/DicTraverseSession";
78    return registerNativeMethods(env, kClassPathName, sMethods, NELEMS(sMethods));
79}
80} // namespace latinime
81