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#include <node.h>
#include <string>
#include <algorithm>
#include <iostream>
using namespace v8;
/* Demonstrates converstions of v8:Value's passed as arguments.
See https://v8docs.nodesource.com/node-0.8/dc/d0a/classv8_1_1_value.html
for more types and conversion methods
*/
Local<Value> make_return(Isolate * isolate, const Local<Object> input ) ;
void PassNumber(const FunctionCallbackInfo<Value>& args) {
Isolate * isolate = args.GetIsolate();
double value = args[0]->NumberValue();
Local<Number> retval = Number::New(isolate, value + 42);
args.GetReturnValue().Set(retval);
}
void PassInteger(const FunctionCallbackInfo<Value>& args) {
Isolate * isolate = args.GetIsolate();
int value = args[0]->Int32Value();
Local<Number> retval = Int32::New(isolate, value + 42);
args.GetReturnValue().Set(retval);
}
void PassBoolean(const FunctionCallbackInfo<Value>& args) {
Isolate * isolate = args.GetIsolate();
Local<Boolean> target = args[0]->ToBoolean();
bool value = target->BooleanValue();
Local<Boolean> retval = Boolean::New(isolate, !value);
args.GetReturnValue().Set(retval);
}
void PassString(const FunctionCallbackInfo<Value>& args) {
Isolate * isolate = args.GetIsolate();
v8::String::Utf8Value s(args[0]);
std::string str(*s, s.length());
std::reverse(str.begin(), str.end());
Local<String> retval = String::NewFromUtf8(isolate, str.c_str());
args.GetReturnValue().Set(retval);
}
void PassObject(const FunctionCallbackInfo<Value>& args) {
Isolate * isolate = args.GetIsolate();
Local<Object> target = args[0]->ToObject();
Local<Value> obj = make_return(isolate, target);
args.GetReturnValue().Set(obj);
}
void PassArray(const FunctionCallbackInfo<Value>& args) {
Isolate * isolate = args.GetIsolate();
Local<Array> array = Local<Array>::Cast(args[0]);
for (unsigned int i = 0; i < array->Length(); i++ ) {
if (array->Has(i)) {
double value = array->Get(i)->NumberValue();
array->Set(i, Number::New(isolate, value + 1));
}
}
Local<String> prop = String::NewFromUtf8(isolate, "not_index");
Local<Array> a = Array::New(isolate);
a->Set(0, array->Get(0));
a->Set(1, array->Get(prop));
a->Set(2, array->Get(2));
args.GetReturnValue().Set(a);
}
Local<Value> make_return(Isolate * isolate, const Local<Object> input ) {
Local<String> x_prop = String::NewFromUtf8(isolate, "x");
Local<String> y_prop = String::NewFromUtf8(isolate, "y");
Local<String> sum_prop = String::NewFromUtf8(isolate, "sum");
Local<String> product_prop = String::NewFromUtf8(isolate, "product");
double x = input->Get(x_prop)->NumberValue();
double y = input->Get(y_prop)->NumberValue();
Local<Object> obj = Object::New(isolate);
obj->Set(sum_prop, Number::New(isolate, x + y));
obj->Set(product_prop, Number::New(isolate, x * y));
return obj;
}
void init(Local<Object> exports) {
NODE_SET_METHOD(exports, "pass_number", PassNumber);
NODE_SET_METHOD(exports, "pass_integer", PassInteger);
NODE_SET_METHOD(exports, "pass_string", PassString);
NODE_SET_METHOD(exports, "pass_boolean", PassBoolean);
NODE_SET_METHOD(exports, "pass_object", PassObject);
NODE_SET_METHOD(exports, "pass_array", PassArray);
}
NODE_MODULE(loose_type_demo, init)