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https://github.com/Takiiiiiiii/strato.git
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c76ef3730b
We earlier moved to LGPLv3.0 or Later. This was a mistake as what we wanted was being able to link to proprietary libraries but LGPL is the opposite and it allows linking proprietary libraries to libskyline instead. After further consideration, we've moved to MPL-2.0, it allows linking to proprietary libraries and is a standardized license as compared to adding an exception to GPL.
91 lines
3.6 KiB
C++
91 lines
3.6 KiB
C++
// SPDX-License-Identifier: MPL-2.0
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// Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
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#pragma once
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#include <common.h>
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#include <jni.h>
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namespace skyline {
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/**
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* @brief The JvmManager class is used to simplify transactions with the Java component
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*/
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class JvmManager {
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public:
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JavaVM *vm{}; //!< A pointer to the Java VM
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jobject instance; //!< A reference to the activity
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jclass instanceClass; //!< The class of the activity
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/**
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* @param env A pointer to the JNI environment
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* @param instance A reference to the activity
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*/
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JvmManager(JNIEnv *env, jobject instance);
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/**
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* @brief Attach the current thread to the Java VM
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*/
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void AttachThread();
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/**
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* @brief Detach the current thread to the Java VM
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*/
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void DetachThread();
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/**
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* @brief Returns a pointer to the JNI environment for the current thread
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*/
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JNIEnv *GetEnv();
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/**
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* @brief Retrieves a specific field of the given type from the activity
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* @tparam objectType The type of the object in the field
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* @param key The name of the field in the activity class
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* @return The contents of the field as objectType
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*/
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template<typename objectType>
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inline objectType GetField(const char *key) {
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JNIEnv *env = GetEnv();
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if constexpr(std::is_same<objectType, jboolean>())
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return env->GetBooleanField(instance, env->GetFieldID(instanceClass, key, "Z"));
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else if constexpr(std::is_same<objectType, jbyte>())
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return env->GetByteField(instance, env->GetFieldID(instanceClass, key, "B"));
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else if constexpr(std::is_same<objectType, jchar>())
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return env->GetCharField(instance, env->GetFieldID(instanceClass, key, "C"));
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else if constexpr(std::is_same<objectType, jshort>())
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return env->GetShortField(instance, env->GetFieldID(instanceClass, key, "S"));
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else if constexpr(std::is_same<objectType, jint>())
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return env->GetIntField(instance, env->GetFieldID(instanceClass, key, "I"));
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else if constexpr(std::is_same<objectType, jlong>())
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return env->GetLongField(instance, env->GetFieldID(instanceClass, key, "J"));
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else if constexpr(std::is_same<objectType, jfloat>())
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return env->GetFloatField(instance, env->GetFieldID(instanceClass, key, "F"));
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else if constexpr(std::is_same<objectType, jdouble>())
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return env->GetDoubleField(instance, env->GetFieldID(instanceClass, key, "D"));
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}
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/**
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* @brief Retrieves a specific field from the activity as a jobject
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* @param key The name of the field in the activity class
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* @param signature The signature of the field
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* @return A jobject of the contents of the field
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*/
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jobject GetField(const char *key, const char *signature);
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/**
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* @brief Checks if a specific field from the activity is null or not
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* @param key The name of the field in the activity class
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* @param signature The signature of the field
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* @return If the field is null or not
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*/
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bool CheckNull(const char *key, const char *signature);
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/**
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* @brief Checks if a specific jobject is null or not
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* @param object The jobject to check
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* @return If the object is null or not
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*/
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bool CheckNull(jobject &object);
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};
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}
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