Move JNI bindings code from mapbox-gl-native to this repo. (#301)

MapboxGLAndroidSDK/src/cpp/style/value.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <jni/jni.hpp>
+
+#include <string>
+
+namespace mbgl {
+namespace android {
+
+class Value {
+public:
+    Value(jni::JNIEnv&, jni::Local<jni::Object<>>);
+    Value(jni::JNIEnv&, const jni::Object<>&);
+
+    Value(Value&&)                 = default;
+    Value& operator=(Value&&)      = delete;
+
+    Value(const Value&)            = delete;
+    Value& operator=(const Value&) = delete;
+
+    bool isNull() const;
+    bool isArray() const;
+    bool isObject() const;
+    bool isString() const;
+    bool isBool() const;
+    bool isNumber() const;
+
+    std::string toString() const;
+    float toFloat() const;
+    double toDouble() const;
+    long toLong() const;
+    bool toBool() const;
+    Value get(const char* key) const;
+    Value keyArray() const;
+    int getLength() const;
+    Value get(const int index ) const;
+
+    jni::JNIEnv& env;
+    jni::Local<jni::Object<>> value;
+};
+
+}
+}