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      1 /*
      2  * Copyright (C) 2010 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 "valueOf"
     18 
     19 #include "valueOf.h"
     20 #include "JNIHelp.h"
     21 #include "JniConstants.h"
     22 
     23 template <typename T>
     24 static jobject valueOf(JNIEnv* env, jclass c, const char* signature, const T& value) {
     25     static jmethodID valueOfMethod = env->GetStaticMethodID(c, "valueOf", signature);
     26     if (env->ExceptionCheck()) {
     27         return NULL;
     28     }
     29     jobject result = env->CallStaticObjectMethod(c, valueOfMethod, value);
     30     if (env->ExceptionCheck()) {
     31         return NULL;
     32     }
     33     return result;
     34 }
     35 
     36 jobject booleanValueOf(JNIEnv* env, jboolean value) {
     37     return valueOf(env, JniConstants::booleanClass, "(Z)Ljava/lang/Boolean;", value);
     38 }
     39 
     40 jobject doubleValueOf(JNIEnv* env, jdouble value) {
     41     return valueOf(env, JniConstants::doubleClass, "(D)Ljava/lang/Double;", value);
     42 }
     43 
     44 jobject integerValueOf(JNIEnv* env, jint value) {
     45     return valueOf(env, JniConstants::integerClass, "(I)Ljava/lang/Integer;", value);
     46 }
     47 
     48 jobject longValueOf(JNIEnv* env, jlong value) {
     49     return valueOf(env, JniConstants::longClass, "(J)Ljava/lang/Long;", value);
     50 }
     51 
     52 jboolean booleanValue(JNIEnv* env, jobject javaLangBoolean) {
     53     static jfieldID fid = env->GetFieldID(JniConstants::booleanClass, "value", "Z");
     54     return env->GetBooleanField(javaLangBoolean, fid);
     55 }
     56 
     57 jint intValue(JNIEnv* env, jobject javaLangInteger) {
     58     static jfieldID fid = env->GetFieldID(JniConstants::integerClass, "value", "I");
     59     return env->GetIntField(javaLangInteger, fid);
     60 }
     61