+++ /dev/null
-/*********************************************************************
- * NAN - Native Abstractions for Node.js
- *
- * Copyright (c) 2018 NAN contributors
- *
- * MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
- ********************************************************************/
-
-#ifndef NAN_JSON_H_
-#define NAN_JSON_H_
-
-#if NODE_MODULE_VERSION < NODE_0_12_MODULE_VERSION
-#define NAN_JSON_H_NEED_PARSE 1
-#else
-#define NAN_JSON_H_NEED_PARSE 0
-#endif // NODE_MODULE_VERSION < NODE_0_12_MODULE_VERSION
-
-#if NODE_MODULE_VERSION >= NODE_7_0_MODULE_VERSION
-#define NAN_JSON_H_NEED_STRINGIFY 0
-#else
-#define NAN_JSON_H_NEED_STRINGIFY 1
-#endif // NODE_MODULE_VERSION >= NODE_7_0_MODULE_VERSION
-
-class JSON {
- public:
- JSON() {
-#if NAN_JSON_H_NEED_PARSE + NAN_JSON_H_NEED_STRINGIFY
- Nan::HandleScope scope;
-
- Nan::MaybeLocal<v8::Value> maybe_global_json = Nan::Get(
- Nan::GetCurrentContext()->Global(),
- Nan::New("JSON").ToLocalChecked()
- );
-
- assert(!maybe_global_json.IsEmpty() && "global JSON is empty");
- v8::Local<v8::Value> val_global_json = maybe_global_json.ToLocalChecked();
-
- assert(val_global_json->IsObject() && "global JSON is not an object");
- Nan::MaybeLocal<v8::Object> maybe_obj_global_json =
- Nan::To<v8::Object>(val_global_json);
-
- assert(!maybe_obj_global_json.IsEmpty() && "global JSON object is empty");
- v8::Local<v8::Object> global_json = maybe_obj_global_json.ToLocalChecked();
-
-#if NAN_JSON_H_NEED_PARSE
- Nan::MaybeLocal<v8::Value> maybe_parse_method = Nan::Get(
- global_json, Nan::New("parse").ToLocalChecked()
- );
-
- assert(!maybe_parse_method.IsEmpty() && "JSON.parse is empty");
- v8::Local<v8::Value> parse_method = maybe_parse_method.ToLocalChecked();
-
- assert(parse_method->IsFunction() && "JSON.parse is not a function");
- parse_cb_.Reset(parse_method.As<v8::Function>());
-#endif // NAN_JSON_H_NEED_PARSE
-
-#if NAN_JSON_H_NEED_STRINGIFY
- Nan::MaybeLocal<v8::Value> maybe_stringify_method = Nan::Get(
- global_json, Nan::New("stringify").ToLocalChecked()
- );
-
- assert(!maybe_stringify_method.IsEmpty() && "JSON.stringify is empty");
- v8::Local<v8::Value> stringify_method =
- maybe_stringify_method.ToLocalChecked();
-
- assert(
- stringify_method->IsFunction() && "JSON.stringify is not a function"
- );
- stringify_cb_.Reset(stringify_method.As<v8::Function>());
-#endif // NAN_JSON_H_NEED_STRINGIFY
-#endif // NAN_JSON_H_NEED_PARSE + NAN_JSON_H_NEED_STRINGIFY
- }
-
- inline
- Nan::MaybeLocal<v8::Value> Parse(v8::Local<v8::String> json_string) {
- Nan::EscapableHandleScope scope;
-#if NAN_JSON_H_NEED_PARSE
- return scope.Escape(parse(json_string));
-#else
- Nan::MaybeLocal<v8::Value> result;
-#if NODE_MODULE_VERSION >= NODE_0_12_MODULE_VERSION && \
- NODE_MODULE_VERSION <= IOJS_2_0_MODULE_VERSION
- result = v8::JSON::Parse(json_string);
-#else
-#if NODE_MODULE_VERSION > NODE_6_0_MODULE_VERSION
- v8::Local<v8::Context> context_or_isolate = Nan::GetCurrentContext();
-#else
- v8::Isolate* context_or_isolate = v8::Isolate::GetCurrent();
-#endif // NODE_MODULE_VERSION > NODE_6_0_MODULE_VERSION
- result = v8::JSON::Parse(context_or_isolate, json_string);
-#endif // NODE_MODULE_VERSION >= NODE_0_12_MODULE_VERSION &&
- // NODE_MODULE_VERSION <= IOJS_2_0_MODULE_VERSION
- if (result.IsEmpty()) return v8::Local<v8::Value>();
- return scope.Escape(result.ToLocalChecked());
-#endif // NAN_JSON_H_NEED_PARSE
- }
-
- inline
- Nan::MaybeLocal<v8::String> Stringify(v8::Local<v8::Object> json_object) {
- Nan::EscapableHandleScope scope;
- Nan::MaybeLocal<v8::String> result =
-#if NAN_JSON_H_NEED_STRINGIFY
- Nan::To<v8::String>(stringify(json_object));
-#else
- v8::JSON::Stringify(Nan::GetCurrentContext(), json_object);
-#endif // NAN_JSON_H_NEED_STRINGIFY
- if (result.IsEmpty()) return v8::Local<v8::String>();
- return scope.Escape(result.ToLocalChecked());
- }
-
- inline
- Nan::MaybeLocal<v8::String> Stringify(v8::Local<v8::Object> json_object,
- v8::Local<v8::String> gap) {
- Nan::EscapableHandleScope scope;
- Nan::MaybeLocal<v8::String> result =
-#if NAN_JSON_H_NEED_STRINGIFY
- Nan::To<v8::String>(stringify(json_object, gap));
-#else
- v8::JSON::Stringify(Nan::GetCurrentContext(), json_object, gap);
-#endif // NAN_JSON_H_NEED_STRINGIFY
- if (result.IsEmpty()) return v8::Local<v8::String>();
- return scope.Escape(result.ToLocalChecked());
- }
-
- private:
- NAN_DISALLOW_ASSIGN_COPY_MOVE(JSON)
-#if NAN_JSON_H_NEED_PARSE
- Nan::Callback parse_cb_;
-#endif // NAN_JSON_H_NEED_PARSE
-#if NAN_JSON_H_NEED_STRINGIFY
- Nan::Callback stringify_cb_;
-#endif // NAN_JSON_H_NEED_STRINGIFY
-
-#if NAN_JSON_H_NEED_PARSE
- inline v8::Local<v8::Value> parse(v8::Local<v8::Value> arg) {
- assert(!parse_cb_.IsEmpty() && "parse_cb_ is empty");
- AsyncResource resource("nan:JSON.parse");
- return parse_cb_.Call(1, &arg, &resource).FromMaybe(v8::Local<v8::Value>());
- }
-#endif // NAN_JSON_H_NEED_PARSE
-
-#if NAN_JSON_H_NEED_STRINGIFY
- inline v8::Local<v8::Value> stringify(v8::Local<v8::Value> arg) {
- assert(!stringify_cb_.IsEmpty() && "stringify_cb_ is empty");
- AsyncResource resource("nan:JSON.stringify");
- return stringify_cb_.Call(1, &arg, &resource)
- .FromMaybe(v8::Local<v8::Value>());
- }
-
- inline v8::Local<v8::Value> stringify(v8::Local<v8::Value> arg,
- v8::Local<v8::String> gap) {
- assert(!stringify_cb_.IsEmpty() && "stringify_cb_ is empty");
-
- v8::Local<v8::Value> argv[] = {
- arg,
- Nan::Null(),
- gap
- };
- AsyncResource resource("nan:JSON.stringify");
- return stringify_cb_.Call(3, argv, &resource)
- .FromMaybe(v8::Local<v8::Value>());
- }
-#endif // NAN_JSON_H_NEED_STRINGIFY
-};
-
-#endif // NAN_JSON_H_
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