jniutil.h

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#ifndef ION_PORT_ANDROID_JNIUTIL_H_
#define ION_PORT_ANDROID_JNIUTIL_H_

#include <jni.h>
#include <string>

namespace ion {
namespace port {
namespace android {

void SetJVM(JavaVM* jvm);
JavaVM* GetJVM();
jclass FindClassGlobal(JNIEnv* env, const char* class_name);
jmethodID GetStaticMethod(JNIEnv* env, jclass clazz, const char* class_name,
                          const char* name, const char* signature);
jmethodID GetMethod(JNIEnv* env, jclass clazz, const char* class_name,
                    const char* name, const char* signature);
jfieldID GetStaticMember(JNIEnv* env, jclass clazz, const char* class_name,
                         const char* name, const char* type);
jfieldID GetMember(JNIEnv* env, jclass clazz, const char* class_name,
                   const char* name, const char* type);
jfieldID GetIntMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetLongMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetStringMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetBooleanMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetIntArrayMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetStaticIntMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetStaticLongMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetStaticStringMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jfieldID GetStaticBooleanMember(
    JNIEnv* env, jclass clazz, const char* class_name, const char* name);
jstring JavaString(JNIEnv* env, const std::string& s);
jobjectArray JavaStringArray(JNIEnv* env, int length);
jbyteArray JavaByteArray(JNIEnv* env, const std::string& bytes);
jbyteArray JavaByteArray(JNIEnv* env, const jbyte* data, jsize size);

void JavaGetByteArray(JNIEnv* env, jbyteArray array,
                      jsize first, jsize size, char* out);

class LocalFrame {
 public:
  explicit LocalFrame(JNIEnv* env);
  ~LocalFrame();
 private:
  JNIEnv* env_;
};

class ScopedJObject {
 public:
  explicit ScopedJObject(JNIEnv* env, jobject* obj): env_(env), obj_(obj) {}
  ~ScopedJObject() { env_->DeleteLocalRef(*obj_); }
 private:
  JNIEnv* env_;
  jobject* obj_;
};

}  // namespace android
}  // namespace port
}  // namespace ion

#endif  // ION_PORT_ANDROID_JNIUTIL_H_