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Experiments with Node bindings optimisation

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This commit is contained in:
Siarhei Fedartsou 2024-07-26 23:35:23 +02:00
parent df62a871f6
commit e7d75f9824
1 changed files with 28 additions and 30 deletions
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58
include/nodejs/json_v8_renderer.hpp
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@ -11,87 +11,85 @@ namespace node_osrm
struct V8Renderer
{
explicit V8Renderer(const Napi::Env &env, Napi::Value &out) : env(env), out(out) {}
explicit V8Renderer(const Napi::Env &env) : env(env) {}
void operator()(const osrm::json::String &string) const
Napi::Value operator()(const osrm::json::String &string) const
{
out = Napi::String::New(env, string.value);
return Napi::String::New(env, string.value);
}
void operator()(const osrm::json::Number &number) const
Napi::Value operator()(const osrm::json::Number &number) const
{
out = Napi::Number::New(env, number.value);
return Napi::Number::New(env, number.value);
}
void operator()(const osrm::json::Object &object) const
Napi::Value operator()(const osrm::json::Object &object) const
{
Napi::Object obj = Napi::Object::New(env);
for (const auto &keyValue : object.values)
{
Napi::Value child;
visit(V8Renderer(env, child), keyValue.second);
obj.Set(keyValue.first, child);
obj.Set(keyValue.first, visit(V8Renderer(env), keyValue.second));
}
out = obj;
return obj;
}
void operator()(const osrm::json::Array &array) const
Napi::Value operator()(const osrm::json::Array &array) const
{
Napi::Array a = Napi::Array::New(env, array.values.size());
for (auto i = 0u; i < array.values.size(); ++i)
{
Napi::Value child;
visit(V8Renderer(env, child), array.values[i]);
a.Set(i, child);
a.Set(i, visit(V8Renderer(env), array.values[i]));
}
out = a;
return a;
}
void operator()(const osrm::json::True &) const { out = Napi::Boolean::New(env, true); }
Napi::Value operator()(const osrm::json::True &) const { return Napi::Boolean::New(env, true); }
void operator()(const osrm::json::False &) const { out = Napi::Boolean::New(env, false); }
Napi::Value operator()(const osrm::json::False &) const
{
return Napi::Boolean::New(env, false);
}
void operator()(const osrm::json::Null &) const { out = env.Null(); }
Napi::Value operator()(const osrm::json::Null &) const { return env.Null(); }
private:
void visit(const V8Renderer &renderer, const osrm::json::Value &value) const
Napi::Value visit(const V8Renderer &renderer, const osrm::json::Value &value) const
{
switch (value.index())
{
case 0:
renderer(std::get<osrm::json::String>(value));
return renderer(std::get<osrm::json::String>(value));
break;
case 1:
renderer(std::get<osrm::json::Number>(value));
return renderer(std::get<osrm::json::Number>(value));
break;
case 2:
renderer(std::get<osrm::json::Object>(value));
return renderer(std::get<osrm::json::Object>(value));
break;
case 3:
renderer(std::get<osrm::json::Array>(value));
return renderer(std::get<osrm::json::Array>(value));
break;
case 4:
renderer(std::get<osrm::json::True>(value));
return renderer(std::get<osrm::json::True>(value));
break;
case 5:
renderer(std::get<osrm::json::False>(value));
return renderer(std::get<osrm::json::False>(value));
break;
case 6:
renderer(std::get<osrm::json::Null>(value));
return renderer(std::get<osrm::json::Null>(value));
break;
}
return env.Null();
}
private:
const Napi::Env &env;
Napi::Value &out;
};
inline void renderToV8(const Napi::Env &env, Napi::Value &out, const osrm::json::Object &object)
{
V8Renderer renderer(env, out);
renderer(object);
V8Renderer renderer(env);
out = renderer(object);
}
} // namespace node_osrm