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#pragma once
#include "value.hpp"
#include <mbgl/util/feature.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/util/optional.hpp>
#include <mbgl/style/conversion/geojson.hpp>
#include <mbgl/style/conversion_impl.hpp>
#include <jni/jni.hpp>
namespace mbgl {
namespace style {
namespace conversion {
template <>
class ConversionTraits<mbgl::android::Value> {
public:
static bool isUndefined(const mbgl::android::Value& value) {
return value.isNull();
}
static bool isArray(const mbgl::android::Value& value) {
return value.isArray();
}
static bool isObject(const mbgl::android::Value& value) {
return value.isObject();
}
static std::size_t arrayLength(const mbgl::android::Value& value) {
return value.getLength();;
}
static mbgl::android::Value arrayMember(const mbgl::android::Value& value, std::size_t i) {
return value.get(i);
}
static optional<mbgl::android::Value> objectMember(const mbgl::android::Value& value, const char* key) {
mbgl::android::Value member = value.get(key);
if (!member.isNull()) {
return member;
} else {
return {};
}
}
template <class Fn>
static optional<Error> eachMember(const mbgl::android::Value& value, Fn&& fn) {
assert(value.isObject());
mbgl::android::Value keys = value.keyArray();
std::size_t length = arrayLength(keys);
for(std::size_t i = 0; i < length; ++i){
const auto k = keys.get(i).toString();
auto v = value.get(k.c_str());
optional<Error> result = fn(k, std::move(v));
if (result) {
return result;
}
}
return {};
}
static optional<bool> toBool(const mbgl::android::Value& value) {
if (value.isBool()) {
return value.toBool();
} else {
return {};
}
}
static optional<float> toNumber(const mbgl::android::Value& value) {
if (value.isNumber()) {
auto num = value.toFloat();
return num;
} else {
return {};
}
}
static optional<double> toDouble(const mbgl::android::Value& value) {
if (value.isNumber()) {
return value.toDouble();
} else {
return {};
}
}
static optional<std::string> toString(const mbgl::android::Value& value) {
if (value.isString()) {
return value.toString();
} else {
return {};
}
}
static optional<Value> toValue(const mbgl::android::Value& value) {
if (value.isNull()) {
return {};
} else if (value.isBool()) {
return { value.toBool() };
} else if (value.isString()) {
return { value.toString() };
} else if (value.isNumber()) {
return { value.toDouble() };
} else {
return {};
}
}
static optional<GeoJSON> toGeoJSON(const mbgl::android::Value &value, Error &error) {
if (value.isNull()) {
error = { "no json data found" };
return {};
}
if (value.isString()) {
return parseGeoJSON(value.toString(), error);
}
if (value.isObject()) {
mbgl::android::Value keys = value.keyArray();
std::size_t length = arrayLength(keys);
for (std::size_t i = 0; i < length; ++i) {
const auto k = keys.get(i).toString();
if (k == "json") {
auto v = value.get("json");
if (v.isString()) {
return parseGeoJSON(v.toString(), error);
} else {
break;
}
}
}
}
error = {"no json data found"};
return {};
}
};
template <class T, class...Args>
optional<T> convert(mbgl::android::Value&& value, Error& error, Args&&...args) {
return convert<T>(Convertible(std::move(value)), error, std::forward<Args>(args)...);
}
} // namespace conversion
} // namespace style
} // namespace mbgl
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