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
27 namespace latinime {
28 class Dictionary;
latinime_setDicTraverseSession(JNIEnv * env,jclass clazz,jstring localeJStr,jlong dictSize)29 static 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
latinime_initDicTraverseSession(JNIEnv * env,jclass clazz,jlong traverseSession,jlong dictionary,jintArray previousWord,jint previousWordLength)35 static 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
latinime_releaseDicTraverseSession(JNIEnv * env,jclass clazz,jlong traverseSession)53 static void latinime_releaseDicTraverseSession(JNIEnv *env, jclass clazz, jlong traverseSession) {
54 DicTraverseSession *ts = reinterpret_cast<DicTraverseSession *>(traverseSession);
55 DicTraverseSession::releaseSessionInstance(ts);
56 }
57
58 static 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
register_DicTraverseSession(JNIEnv * env)76 int 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