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43 lines
1.0 KiB
43 lines
1.0 KiB
#include <node.h>
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#include <v8.h>
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namespace {
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using v8::FunctionCallbackInfo;
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using v8::Isolate;
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using v8::Local;
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using v8::NewStringType;
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using v8::Object;
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using v8::Promise;
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using v8::String;
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using v8::Value;
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static void ThrowError(Isolate* isolate, const char* err_msg) {
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Local<String> str = String::NewFromOneByte(
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isolate,
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reinterpret_cast<const uint8_t*>(err_msg),
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NewStringType::kNormal).ToLocalChecked();
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isolate->ThrowException(str);
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}
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static void GetPromiseField(const FunctionCallbackInfo<Value>& args) {
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auto isolate = args.GetIsolate();
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if (!args[0]->IsPromise())
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return ThrowError(isolate, "arg is not an Promise");
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auto p = args[0].As<Promise>();
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if (p->InternalFieldCount() < 1)
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return ThrowError(isolate, "Promise has no internal field");
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auto l = p->GetInternalField(0);
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args.GetReturnValue().Set(l);
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}
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inline void Initialize(v8::Local<v8::Object> binding) {
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NODE_SET_METHOD(binding, "getPromiseField", GetPromiseField);
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}
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NODE_MODULE(NODE_GYP_MODULE_NAME, Initialize)
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} // anonymous namespace
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