114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
#pragma once
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#pragma GCC diagnostic ignored "-Wshadow"
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#include <nan.h>
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#pragma GCC diagnostic pop
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#include <mbgl/util/optional.hpp>
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#include <mbgl/util/feature.hpp>
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#include <mbgl/style/conversion.hpp>
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namespace mbgl {
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namespace style {
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namespace conversion {
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inline bool isUndefined(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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return value->IsUndefined() || value->IsNull();
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}
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inline bool isArray(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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return value->IsArray();
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}
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inline std::size_t arrayLength(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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return value.As<v8::Array>()->Length();
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}
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inline v8::Local<v8::Value> arrayMember(v8::Local<v8::Value> value, std::size_t i) {
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Nan::EscapableHandleScope scope;
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return scope.Escape(Nan::Get(value.As<v8::Array>(), i).ToLocalChecked());
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}
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inline bool isObject(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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return value->IsObject() && !value->IsArray();
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}
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inline optional<v8::Local<v8::Value>> objectMember(v8::Local<v8::Value> value, const char * name) {
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Nan::EscapableHandleScope scope;
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if (!Nan::Has(Nan::To<v8::Object>(value).ToLocalChecked(), Nan::New(name).ToLocalChecked()).FromJust()) {
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return {};
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}
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Nan::MaybeLocal<v8::Value> result = Nan::Get(Nan::To<v8::Object>(value).ToLocalChecked(), Nan::New(name).ToLocalChecked());
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if (result.IsEmpty()) {
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return {};
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}
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return scope.Escape(result.ToLocalChecked());
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}
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template <class Fn>
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optional<Error> eachMember(v8::Local<v8::Value> value, Fn&& fn) {
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Nan::HandleScope scope;
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v8::Local<v8::Array> names = Nan::GetOwnPropertyNames(Nan::To<v8::Object>(value).ToLocalChecked()).ToLocalChecked();
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for (uint32_t i = 0; i < names->Length(); ++i) {
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v8::Local<v8::Value> k = Nan::Get(names, i).ToLocalChecked();
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v8::Local<v8::Value> v = Nan::Get(Nan::To<v8::Object>(value).ToLocalChecked(), k).ToLocalChecked();
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optional<Error> result = fn(*Nan::Utf8String(k), v);
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if (result) {
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return result;
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}
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}
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return {};
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}
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inline optional<bool> toBool(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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if (!value->IsBoolean()) {
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return {};
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}
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return value->BooleanValue();
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}
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inline optional<float> toNumber(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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if (!value->IsNumber()) {
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return {};
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}
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return value->NumberValue();
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}
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inline optional<std::string> toString(v8::Local<v8::Value> value) {
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Nan::HandleScope scope;
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if (!value->IsString()) {
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return {};
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}
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return std::string(*Nan::Utf8String(value));
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}
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inline optional<Value> toValue(v8::Local<v8::Value> value) {
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if (value->IsFalse()) {
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return { false };
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} else if (value->IsTrue()) {
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return { true };
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} else if (value->IsString()) {
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return { std::string(*Nan::Utf8String(value)) };
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} else if (value->IsUint32()) {
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return { std::uint64_t(value->Uint32Value()) };
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} else if (value->IsInt32()) {
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return { std::int64_t(value->Int32Value()) };
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} else if (value->IsNumber()) {
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return { value->NumberValue() };
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} else {
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return {};
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}
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}
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} // namespace conversion
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} // namespace style
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} // namespace mbgl
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