diff options
Diffstat (limited to 'platform/android/src/gson/json_object.cpp')
| -rw-r--r-- | platform/android/src/gson/json_object.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/platform/android/src/gson/json_object.cpp b/platform/android/src/gson/json_object.cpp new file mode 100644 index 0000000000..a704dae9dd --- /dev/null +++ b/platform/android/src/gson/json_object.cpp @@ -0,0 +1,64 @@ +#include "json_object.hpp" + +#include "json_element.hpp" + +#include "../java/util.hpp" + +namespace mbgl { +namespace android { +namespace gson { + + +template <typename F> // void (jni::String, jni::Object<gson::JsonElement>) +static void iterateEntrySet(jni::JNIEnv& env, jni::Object<JsonObject> jsonObject, F callback) { + // Get Set<Map.Entry<String, JsonElement>> + static auto method = JsonObject::javaClass.GetMethod<jni::Object<java::util::Set> ()>(env, "entrySet"); + auto entrySet = jsonObject.Call(env, method); + jni::Array<jni::Object<java::util::Map::Entry>> entryArray = java::util::Set::toArray<java::util::Map::Entry>(env, entrySet); + + size_t size = entryArray.Length(env); + for (size_t i = 0; i < size; i++) { + auto entry = entryArray.Get(env, i); + if (entry) { + // Convert + auto jKey = java::util::Map::Entry::getKey<jni::ObjectTag>(env, entry); + auto jKeyString = jni::String(reinterpret_cast<jni::jstring*>(jKey.Get())); + auto jValue = java::util::Map::Entry::getValue<gson::JsonElement>(env, entry); + + // Callback + callback(jKeyString, jValue); + + // Cleanup + // Skip jKey as it points to the same as jKeyString + jni::DeleteLocalRef(env, jKeyString); + jni::DeleteLocalRef(env, jValue); + } + jni::DeleteLocalRef(env, entry); + } + + jni::DeleteLocalRef(env, entrySet); + jni::DeleteLocalRef(env, entryArray); +} + +mapbox::geometry::property_map JsonObject::convert(jni::JNIEnv &env, jni::Object<JsonObject> jsonObject) { + mapbox::geometry::property_map map; + + if (jsonObject) { + iterateEntrySet(env, jsonObject, [&map, &env](jni::String jId, jni::Object<gson::JsonElement> jsonElement) { + map[jni::Make<std::string>(env, jId)] = JsonElement::convert(env, jsonElement); + }); + } + + return map; +} + +void JsonObject::registerNative(jni::JNIEnv &env) { + // Lookup the class + javaClass = *jni::Class<JsonObject>::Find(env).NewGlobalRef(env).release(); +} + +jni::Class<JsonObject> JsonObject::javaClass; + +} // namespace gson +} // namespace android +} // namespace mbgl
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