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      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 "jni.h"
     23 #include "jni_common.h"
     24 #include "suggest/core/session/dic_traverse_session.h"
     25 
     26 namespace latinime {
     27 class Dictionary;
     28 static jlong latinime_setDicTraverseSession(JNIEnv *env, jclass clazz, jstring localeJStr,
     29         jlong dictSize) {
     30     void *traverseSession = DicTraverseSession::getSessionInstance(env, localeJStr, dictSize);
     31     return reinterpret_cast<jlong>(traverseSession);
     32 }
     33 
     34 static void latinime_initDicTraverseSession(JNIEnv *env, jclass clazz, jlong traverseSession,
     35         jlong dictionary, jintArray previousWord, jint previousWordLength) {
     36     DicTraverseSession *ts = reinterpret_cast<DicTraverseSession *>(traverseSession);
     37     Dictionary *dict = reinterpret_cast<Dictionary *>(dictionary);
     38     if (!previousWord) {
     39         DicTraverseSession::initSessionInstance(
     40                 ts, dict, 0 /* prevWord */, 0 /* prevWordLength*/, 0 /* suggestOptions */);
     41         return;
     42     }
     43     int prevWord[previousWordLength];
     44     env->GetIntArrayRegion(previousWord, 0, previousWordLength, prevWord);
     45     DicTraverseSession::initSessionInstance(
     46             ts, dict, prevWord, previousWordLength, 0 /* suggestOptions */);
     47 }
     48 
     49 static void latinime_releaseDicTraverseSession(JNIEnv *env, jclass clazz, jlong traverseSession) {
     50     DicTraverseSession *ts = reinterpret_cast<DicTraverseSession *>(traverseSession);
     51     DicTraverseSession::releaseSessionInstance(ts);
     52 }
     53 
     54 static const JNINativeMethod sMethods[] = {
     55     {
     56         const_cast<char *>("setDicTraverseSessionNative"),
     57         const_cast<char *>("(Ljava/lang/String;J)J"),
     58         reinterpret_cast<void *>(latinime_setDicTraverseSession)
     59     },
     60     {
     61         const_cast<char *>("initDicTraverseSessionNative"),
     62         const_cast<char *>("(JJ[II)V"),
     63         reinterpret_cast<void *>(latinime_initDicTraverseSession)
     64     },
     65     {
     66         const_cast<char *>("releaseDicTraverseSessionNative"),
     67         const_cast<char *>("(J)V"),
     68         reinterpret_cast<void *>(latinime_releaseDicTraverseSession)
     69     }
     70 };
     71 
     72 int register_DicTraverseSession(JNIEnv *env) {
     73     const char *const kClassPathName = "com/android/inputmethod/latin/DicTraverseSession";
     74     return registerNativeMethods(env, kClassPathName, sMethods, NELEMS(sMethods));
     75 }
     76 } // namespace latinime
     77