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Refine the type of Context to NativeContext around JSObject

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This updates the type of contexts to NativeContext instead of Context,
namely on GetFunctionRealm(), GetCreationContext(), and
JSGlobalObject::native_context.

They should be semantically NativeContexts, but the return type hides
the underlying NativeContext, and causes its user to cast the context
to native.

Change-Id: I2f234b0df8c2dcaeab25cb543e09d80d12ca7369
Reviewed-on: https://chromium-review.googlesource.com/c/1469541
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59543}
This commit is contained in:
tzik 2019-02-13 12:55:38 +09:00 committed by Commit Bot
parent 8bf60985da
commit 2497023acb
7 changed files with 30 additions and 22 deletions
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3
src/api.cc
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@ -4845,7 +4845,8 @@ Local<v8::Object> v8::Object::Clone() {
Local<v8::Context> v8::Object::CreationContext() {
auto self = Utils::OpenHandle(this);
return Utils::ToLocal(self->GetCreationContext());
i::Handle<i::Context> context = self->GetCreationContext();
return Utils::ToLocal(context);
}

1
src/globals.h
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@ -565,6 +565,7 @@ class MessageLocation;
class ModuleScope;
class Name;
class NameDictionary;
class NativeContext;
class NewSpace;
class NewLargeObjectSpace;
class NumberDictionary;

5
src/objects.cc
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@ -3126,11 +3126,12 @@ MaybeHandle<JSProxy> JSProxy::New(Isolate* isolate, Handle<Object> target,
// static
MaybeHandle<Context> JSProxy::GetFunctionRealm(Handle<JSProxy> proxy) {
MaybeHandle<NativeContext> JSProxy::GetFunctionRealm(Handle<JSProxy> proxy) {
DCHECK(proxy->map()->is_constructor());
if (proxy->IsRevoked()) {
THROW_NEW_ERROR(proxy->GetIsolate(),
NewTypeError(MessageTemplate::kProxyRevoked), Context);
NewTypeError(MessageTemplate::kProxyRevoked),
NativeContext);
}
Handle<JSReceiver> target(JSReceiver::cast(proxy->target()),
proxy->GetIsolate());

6
src/objects/js-objects-inl.h
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@ -464,7 +464,7 @@ ACCESSORS(JSBoundFunction, bound_arguments, FixedArray, kBoundArgumentsOffset)
ACCESSORS(JSFunction, raw_feedback_cell, FeedbackCell, kFeedbackCellOffset)
ACCESSORS(JSGlobalObject, native_context, Context, kNativeContextOffset)
ACCESSORS(JSGlobalObject, native_context, NativeContext, kNativeContextOffset)
ACCESSORS(JSGlobalObject, global_proxy, JSObject, kGlobalProxyOffset)
ACCESSORS(JSGlobalProxy, native_context, Object, kNativeContextOffset)
@ -604,7 +604,9 @@ bool JSFunction::has_context() const {
JSGlobalProxy JSFunction::global_proxy() { return context()->global_proxy(); }
Context JSFunction::native_context() { return context()->native_context(); }
NativeContext JSFunction::native_context() {
return context()->native_context();
}
void JSFunction::set_context(Object value) {
DCHECK(value->IsUndefined() || value->IsContext());

20
src/objects/js-objects.cc
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@ -476,7 +476,7 @@ Handle<String> JSReceiver::GetConstructorName(Handle<JSReceiver> receiver) {
return GetConstructorHelper(receiver).second;
}
Handle<Context> JSReceiver::GetCreationContext() {
Handle<NativeContext> JSReceiver::GetCreationContext() {
JSReceiver receiver = *this;
// Externals are JSObjects with null as a constructor.
DCHECK(!receiver->IsExternal(GetIsolate()));
@ -486,7 +486,7 @@ Handle<Context> JSReceiver::GetCreationContext() {
function = JSFunction::cast(constructor);
} else if (constructor->IsFunctionTemplateInfo()) {
// Remote objects don't have a creation context.
return Handle<Context>::null();
return Handle<NativeContext>::null();
} else if (receiver->IsJSGeneratorObject()) {
function = JSGeneratorObject::cast(receiver)->function();
} else {
@ -497,13 +497,14 @@ Handle<Context> JSReceiver::GetCreationContext() {
}
return function->has_context()
? Handle<Context>(function->context()->native_context(),
receiver->GetIsolate())
: Handle<Context>::null();
? Handle<NativeContext>(function->context()->native_context(),
receiver->GetIsolate())
: Handle<NativeContext>::null();
}
// static
MaybeHandle<Context> JSReceiver::GetFunctionRealm(Handle<JSReceiver> receiver) {
MaybeHandle<NativeContext> JSReceiver::GetFunctionRealm(
Handle<JSReceiver> receiver) {
if (receiver->IsJSProxy()) {
return JSProxy::GetFunctionRealm(Handle<JSProxy>::cast(receiver));
}
@ -3001,7 +3002,7 @@ Handle<Map> JSObject::GetElementsTransitionMap(Handle<JSObject> object,
}
// static
MaybeHandle<Context> JSObject::GetFunctionRealm(Handle<JSObject> object) {
MaybeHandle<NativeContext> JSObject::GetFunctionRealm(Handle<JSObject> object) {
DCHECK(object->map()->is_constructor());
DCHECK(!object->IsJSFunction());
return object->GetCreationContext();
@ -4767,7 +4768,7 @@ bool JSObject::IsDroppableApiWrapper() {
}
// static
MaybeHandle<Context> JSBoundFunction::GetFunctionRealm(
MaybeHandle<NativeContext> JSBoundFunction::GetFunctionRealm(
Handle<JSBoundFunction> function) {
DCHECK(function->map()->is_constructor());
return JSReceiver::GetFunctionRealm(
@ -4863,7 +4864,8 @@ Maybe<int> JSFunction::GetLength(Isolate* isolate,
}
// static
Handle<Context> JSFunction::GetFunctionRealm(Handle<JSFunction> function) {
Handle<NativeContext> JSFunction::GetFunctionRealm(
Handle<JSFunction> function) {
DCHECK(function->map()->is_constructor());
return handle(function->context()->native_context(), function->GetIsolate());
}

15
src/objects/js-objects.h
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@ -77,7 +77,8 @@ class JSReceiver : public HeapObject {
V8_WARN_UNUSED_RESULT static MaybeHandle<Object> OrdinaryToPrimitive(
Handle<JSReceiver> receiver, OrdinaryToPrimitiveHint hint);
static MaybeHandle<Context> GetFunctionRealm(Handle<JSReceiver> receiver);
static MaybeHandle<NativeContext> GetFunctionRealm(
Handle<JSReceiver> receiver);
// Get the first non-hidden prototype.
static inline MaybeHandle<Object> GetPrototype(Isolate* isolate,
@ -203,7 +204,7 @@ class JSReceiver : public HeapObject {
// function that was used to instantiate the object).
static Handle<String> GetConstructorName(Handle<JSReceiver> receiver);
Handle<Context> GetCreationContext();
Handle<NativeContext> GetCreationContext();
V8_WARN_UNUSED_RESULT static inline Maybe<PropertyAttributes>
GetPropertyAttributes(Handle<JSReceiver> object, Handle<Name> name);
@ -281,7 +282,7 @@ class JSObject : public JSReceiver {
Handle<JSFunction> constructor, Handle<JSReceiver> new_target,
Handle<AllocationSite> site);
static MaybeHandle<Context> GetFunctionRealm(Handle<JSObject> object);
static MaybeHandle<NativeContext> GetFunctionRealm(Handle<JSObject> object);
// 9.1.12 ObjectCreate ( proto [ , internalSlotsList ] )
// Notice: This is NOT 19.1.2.2 Object.create ( O, Properties )
@ -921,7 +922,7 @@ class JSBoundFunction : public JSObject {
Handle<JSBoundFunction> function);
static Maybe<int> GetLength(Isolate* isolate,
Handle<JSBoundFunction> function);
static MaybeHandle<Context> GetFunctionRealm(
static MaybeHandle<NativeContext> GetFunctionRealm(
Handle<JSBoundFunction> function);
DECL_CAST(JSBoundFunction)
@ -960,11 +961,11 @@ class JSFunction : public JSObject {
inline bool has_context() const;
inline void set_context(Object context);
inline JSGlobalProxy global_proxy();
inline Context native_context();
inline NativeContext native_context();
static Handle<Object> GetName(Isolate* isolate, Handle<JSFunction> function);
static Maybe<int> GetLength(Isolate* isolate, Handle<JSFunction> function);
static Handle<Context> GetFunctionRealm(Handle<JSFunction> function);
static Handle<NativeContext> GetFunctionRealm(Handle<JSFunction> function);
// [code]: The generated code object for this function. Executed
// when the function is invoked, e.g. foo() or new foo(). See
@ -1173,7 +1174,7 @@ class JSGlobalProxy : public JSObject {
class JSGlobalObject : public JSObject {
public:
// [native context]: the natives corresponding to this global object.
DECL_ACCESSORS(native_context, Context)
DECL_ACCESSORS(native_context, NativeContext)
// [global proxy]: the global proxy object of the context
DECL_ACCESSORS(global_proxy, JSObject)

2
src/objects/js-proxy.h
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@ -25,7 +25,7 @@ class JSProxy : public JSReceiver {
// [target]: The target property.
DECL_ACCESSORS(target, Object)
static MaybeHandle<Context> GetFunctionRealm(Handle<JSProxy> proxy);
static MaybeHandle<NativeContext> GetFunctionRealm(Handle<JSProxy> proxy);
DECL_CAST(JSProxy)