diff options
Diffstat (limited to 'platform/node/src/node_conversion.hpp')
| -rw-r--r-- | platform/node/src/node_conversion.hpp | 183 |
1 files changed, 104 insertions, 79 deletions
diff --git a/platform/node/src/node_conversion.hpp b/platform/node/src/node_conversion.hpp index d266745548..7c5bbf4386 100644 --- a/platform/node/src/node_conversion.hpp +++ b/platform/node/src/node_conversion.hpp @@ -9,111 +9,136 @@ #include <mbgl/util/optional.hpp> #include <mbgl/util/feature.hpp> #include <mbgl/style/conversion.hpp> +#include <mbgl/style/conversion/geojson.hpp> namespace mbgl { namespace style { namespace conversion { -inline bool isUndefined(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - return value->IsUndefined() || value->IsNull(); -} +template <> +class ConversionTraits<v8::Local<v8::Value>> { +public: + static bool isUndefined(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + return value->IsUndefined() || value->IsNull(); + } -inline bool isArray(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - return value->IsArray(); -} + static bool isArray(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + return value->IsArray(); + } -inline std::size_t arrayLength(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - return value.As<v8::Array>()->Length(); -} + static std::size_t arrayLength(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + // const_cast because v8::Local<T>::As is not marked const until node v8.0 + v8::Local<v8::Array> array = const_cast<v8::Local<v8::Value>&>(value).As<v8::Array>(); + return array->Length(); + } -inline v8::Local<v8::Value> arrayMember(v8::Local<v8::Value> value, std::size_t i) { - Nan::EscapableHandleScope scope; - return scope.Escape(Nan::Get(value.As<v8::Array>(), i).ToLocalChecked()); -} + static v8::Local<v8::Value> arrayMember(const v8::Local<v8::Value>& value, std::size_t i) { + Nan::EscapableHandleScope scope; + // const_cast because v8::Local<T>::As is not marked const until node v8.0 + v8::Local<v8::Array> array = const_cast<v8::Local<v8::Value>&>(value).As<v8::Array>(); + return scope.Escape(Nan::Get(array, i).ToLocalChecked()); + } -inline bool isObject(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - return value->IsObject() && !value->IsArray(); -} + static bool isObject(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + return value->IsObject() && !value->IsArray(); + } -inline optional<v8::Local<v8::Value>> objectMember(v8::Local<v8::Value> value, const char * name) { - Nan::EscapableHandleScope scope; - if (!Nan::Has(Nan::To<v8::Object>(value).ToLocalChecked(), Nan::New(name).ToLocalChecked()).FromJust()) { - return {}; + static optional<v8::Local<v8::Value>> objectMember(const v8::Local<v8::Value>& value, const char * name) { + Nan::EscapableHandleScope scope; + if (!Nan::Has(Nan::To<v8::Object>(value).ToLocalChecked(), Nan::New(name).ToLocalChecked()).FromJust()) { + return {}; + } + Nan::MaybeLocal<v8::Value> result = Nan::Get(Nan::To<v8::Object>(value).ToLocalChecked(), Nan::New(name).ToLocalChecked()); + if (result.IsEmpty()) { + return {}; + } + return {scope.Escape(result.ToLocalChecked())}; } - Nan::MaybeLocal<v8::Value> result = Nan::Get(Nan::To<v8::Object>(value).ToLocalChecked(), Nan::New(name).ToLocalChecked()); - if (result.IsEmpty()) { + + template <class Fn> + static optional<Error> eachMember(const v8::Local<v8::Value>& value, Fn&& fn) { + Nan::HandleScope scope; + v8::Local<v8::Array> names = Nan::GetOwnPropertyNames(Nan::To<v8::Object>(value).ToLocalChecked()).ToLocalChecked(); + for (uint32_t i = 0; i < names->Length(); ++i) { + v8::Local<v8::Value> k = Nan::Get(names, i).ToLocalChecked(); + v8::Local<v8::Value> v = Nan::Get(Nan::To<v8::Object>(value).ToLocalChecked(), k).ToLocalChecked(); + optional<Error> result = fn(*Nan::Utf8String(k), std::move(v)); + if (result) { + return result; + } + } return {}; } - return scope.Escape(result.ToLocalChecked()); -} -template <class Fn> -optional<Error> eachMember(v8::Local<v8::Value> value, Fn&& fn) { - Nan::HandleScope scope; - v8::Local<v8::Array> names = Nan::GetOwnPropertyNames(Nan::To<v8::Object>(value).ToLocalChecked()).ToLocalChecked(); - for (uint32_t i = 0; i < names->Length(); ++i) { - v8::Local<v8::Value> k = Nan::Get(names, i).ToLocalChecked(); - v8::Local<v8::Value> v = Nan::Get(Nan::To<v8::Object>(value).ToLocalChecked(), k).ToLocalChecked(); - optional<Error> result = fn(*Nan::Utf8String(k), v); - if (result) { - return result; + static optional<bool> toBool(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + if (!value->IsBoolean()) { + return {}; } + return value->BooleanValue(); } - return {}; -} -inline optional<bool> toBool(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - if (!value->IsBoolean()) { - return {}; + static optional<float> toNumber(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + if (!value->IsNumber()) { + return {}; + } + return value->NumberValue(); } - return value->BooleanValue(); -} -inline optional<float> toNumber(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - if (!value->IsNumber()) { - return {}; + static optional<double> toDouble(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + if (!value->IsNumber()) { + return {}; + } + return value->NumberValue(); } - return value->NumberValue(); -} -inline optional<double> toDouble(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - if (!value->IsNumber()) { - return {}; + static optional<std::string> toString(const v8::Local<v8::Value>& value) { + Nan::HandleScope scope; + if (!value->IsString()) { + return {}; + } + return std::string(*Nan::Utf8String(value)); } - return value->NumberValue(); -} -inline optional<std::string> toString(v8::Local<v8::Value> value) { - Nan::HandleScope scope; - if (!value->IsString()) { - return {}; + static optional<Value> toValue(const v8::Local<v8::Value>& value) { + if (value->IsFalse()) { + return { false }; + } else if (value->IsTrue()) { + return { true }; + } else if (value->IsString()) { + return { std::string(*Nan::Utf8String(value)) }; + } else if (value->IsUint32()) { + return { std::uint64_t(value->Uint32Value()) }; + } else if (value->IsInt32()) { + return { std::int64_t(value->Int32Value()) }; + } else if (value->IsNumber()) { + return { value->NumberValue() }; + } else { + return {}; + } } - return std::string(*Nan::Utf8String(value)); -} -inline optional<Value> toValue(v8::Local<v8::Value> value) { - if (value->IsFalse()) { - return { false }; - } else if (value->IsTrue()) { - return { true }; - } else if (value->IsString()) { - return { std::string(*Nan::Utf8String(value)) }; - } else if (value->IsUint32()) { - return { std::uint64_t(value->Uint32Value()) }; - } else if (value->IsInt32()) { - return { std::int64_t(value->Int32Value()) }; - } else if (value->IsNumber()) { - return { value->NumberValue() }; - } else { - return {}; + static optional<GeoJSON> toGeoJSON(const v8::Local<v8::Value>& value, Error& error) { + try { + Nan::JSON JSON; + std::string string = *Nan::Utf8String(JSON.Stringify(value->ToObject()).ToLocalChecked()); + return parseGeoJSON(string, error); + } catch (const std::exception& ex) { + error = { ex.what() }; + return {}; + } } +}; + +template <class T, class...Args> +optional<T> convert(const v8::Local<v8::Value>& value, Error& error, Args&&...args) { + return convert<T>(Convertible(value), error, std::forward<Args>(args)...); } } // namespace conversion |