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src: store onread callback in internal field #26837

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6307c03
src: store onread callback in internal field
addaleax Mar 19, 2019
6c6817f
fixup! src: store onread callback in internal field
addaleax Mar 21, 2019
c3ef805
fixup! fixup! src: store onread callback in internal field
addaleax Mar 26, 2019
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fixup! src: store onread callback in internal field
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@addaleax
addaleax committed Mar 21, 2019
commit 6c6817ff0ff3a65a0fca6af376b4a6fce7b01ada
8 changes: 4 additions & 4 deletions src/base_object-inl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -123,20 +123,20 @@ BaseObject::MakeLazilyInitializedJSTemplate(Environment* env) {
return t;
}

template <int kField>
template <int Field>
void BaseObject::InternalFieldGet(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
info.GetReturnValue().Set(info.This()->GetInternalField(kField));
info.GetReturnValue().Set(info.This()->GetInternalField(Field));
}

template <int kField, bool (v8::Value::* typecheck)() const>
template <int Field, bool (v8::Value::* typecheck)() const>
void BaseObject::InternalFieldSet(v8::Local<v8::String> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info) {
// This could be e.g. value->IsFunction().
CHECK_IMPLIES(typecheck != nullptr, ((*value)->*typecheck)());
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@bnoordhuis bnoordhuis Mar 21, 2019

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Since typecheck is never nullptr currently, maybe change the CHECK_IMPLIES into a simple CHECK?

You could also remove the default template argument and have a second, single-arg InternalFieldSet() without a check.

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@addaleax addaleax Mar 26, 2019

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Yeah, I’ve turned it into a simple CHECK and removed the nullptr default. We can always adjust this if we want.

info.This()->SetInternalField(kField, value);
info.This()->SetInternalField(Field, value);
}

} // namespace node
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4 changes: 2 additions & 2 deletions src/base_object.h
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Expand Up @@ -74,10 +74,10 @@ class BaseObject : public MemoryRetainer {
Environment* env);

// Setter/Getter pair for internal fields that can be passed to SetAccessor.
template <int kField>
template <int Field>
static void InternalFieldGet(v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info);
template <int kField, bool (v8::Value::* typecheck)() const = nullptr>
template <int Field, bool (v8::Value::* typecheck)() const = nullptr>
static void InternalFieldSet(v8::Local<v8::String> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info);
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