[Proxies] Support constructable proxy as new.target (reland)

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1782 matching lines @@
  public:
   DECLARE_CAST(JSReceiver)
 
   // ES6 section 7.1.1 ToPrimitive
   MUST_USE_RESULT static MaybeHandle<Object> ToPrimitive(
       Handle<JSReceiver> receiver,
       ToPrimitiveHint hint = ToPrimitiveHint::kDefault);
   MUST_USE_RESULT static MaybeHandle<Object> OrdinaryToPrimitive(
       Handle<JSReceiver> receiver, OrdinaryToPrimitiveHint hint);
 
+  static MaybeHandle<Context> GetFunctionRealm(Handle<JSReceiver> receiver);
+
   // Implementation of [[HasProperty]], ECMA-262 5th edition, section 8.12.6.
   MUST_USE_RESULT static Maybe<bool> HasProperty(LookupIterator* it);
   MUST_USE_RESULT static inline Maybe<bool> HasProperty(
       Handle<JSReceiver> object, Handle<Name> name);
   MUST_USE_RESULT static inline Maybe<bool> HasOwnProperty(Handle<JSReceiver>,
                                                            Handle<Name> name);
   MUST_USE_RESULT static inline Maybe<bool> HasElement(
       Handle<JSReceiver> object, uint32_t index);
   MUST_USE_RESULT static inline Maybe<bool> HasOwnElement(
       Handle<JSReceiver> object, uint32_t index);
@@ skipping 135 matching lines @@
   // properties is a FixedArray in the fast case and a Dictionary in the
   // slow case.
   DECL_ACCESSORS(properties, FixedArray)  // Get and set fast properties.
   inline void initialize_properties();
   inline bool HasFastProperties();
   // Gets slow properties for non-global objects.
   inline NameDictionary* property_dictionary();
   // Gets global object properties.
   inline GlobalDictionary* global_dictionary();
 
+  static MaybeHandle<Context> GetFunctionRealm(Handle<JSObject> object);
+
   // [elements]: The elements (properties with names that are integers).
   //
   // Elements can be in two general modes: fast and slow. Each mode
   // corrensponds to a set of object representations of elements that
   // have something in common.
   //
   // In the fast mode elements is a FixedArray and so each element can
   // be quickly accessed. This fact is used in the generated code. The
   // elements array can have one of three maps in this mode:
   // fixed_array_map, sloppy_arguments_elements_map or
@@ skipping 5226 matching lines @@
   // [shared]: The information about the function that
   // can be shared by instances.
   DECL_ACCESSORS(shared, SharedFunctionInfo)
 
   // [context]: The context for this function.
   inline Context* context();
   inline void set_context(Object* context);
   inline JSObject* global_proxy();
   inline Context* native_context();
 
+  static MaybeHandle<Context> 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
   // [[Call]] and [[Construct]] description in ECMA-262, section
   // 8.6.2, page 27.
   inline Code* code();
   inline void set_code(Code* code);
   inline void set_code_no_write_barrier(Code* code);
   inline void ReplaceCode(Code* code);
 
   // Tells whether this function inlines the given shared function info.
@@ skipping 2274 matching lines @@
 // The JSProxy describes EcmaScript Harmony proxies
 class JSProxy: public JSReceiver {
  public:
   // [handler]: The handler property.
   DECL_ACCESSORS(handler, Object)
   // [target]: The target property.
   DECL_ACCESSORS(target, Object)
   // [hash]: The hash code property (undefined if not initialized yet).
   DECL_ACCESSORS(hash, Object)
 
+  static MaybeHandle<Context> GetFunctionRealm(Handle<JSProxy> proxy);
+
   inline bool has_handler();
 
   DECLARE_CAST(JSProxy)
 
   static bool IsRevoked(Handle<JSProxy> proxy);
 
   // ES6 9.5.1
   static MaybeHandle<Object> GetPrototype(Handle<JSProxy> receiver);
 
   // ES6 9.5.3
@@ skipping 1211 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_