OLD | NEW |
1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_PROTOTYPE_H_ | 5 #ifndef V8_PROTOTYPE_H_ |
6 #define V8_PROTOTYPE_H_ | 6 #define V8_PROTOTYPE_H_ |
7 | 7 |
8 #include "src/isolate.h" | 8 #include "src/isolate.h" |
9 #include "src/objects.h" | 9 #include "src/objects.h" |
10 | 10 |
(...skipping 88 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
99 } else { | 99 } else { |
100 if (handle_.is_null()) { | 100 if (handle_.is_null()) { |
101 object_ = HeapObject::cast(object_)->map()->prototype(); | 101 object_ = HeapObject::cast(object_)->map()->prototype(); |
102 } else { | 102 } else { |
103 handle_ = | 103 handle_ = |
104 handle(HeapObject::cast(*handle_)->map()->prototype(), isolate_); | 104 handle(HeapObject::cast(*handle_)->map()->prototype(), isolate_); |
105 } | 105 } |
106 } | 106 } |
107 } | 107 } |
108 | 108 |
109 // Returns false iff a call to JSProxy::GetPrototype throws. | |
110 // TODO(neis): This should probably replace Advance(). | |
111 bool AdvanceFollowingProxies() { | |
112 DCHECK(!(handle_.is_null() && object_->IsJSProxy())); | |
113 if (!handle_.is_null() && handle_->IsJSProxy()) { | |
114 did_jump_to_prototype_chain_ = true; | |
115 MaybeHandle<Object> proto = | |
116 JSProxy::GetPrototype(Handle<JSProxy>::cast(handle_)); | |
117 return proto.ToHandle(&handle_); | |
118 } | |
119 AdvanceIgnoringProxies(); | |
120 return true; | |
121 } | |
122 | |
123 bool IsAtEnd(WhereToEnd where_to_end = END_AT_NULL) const { | 109 bool IsAtEnd(WhereToEnd where_to_end = END_AT_NULL) const { |
124 if (handle_.is_null()) { | 110 if (handle_.is_null()) { |
125 return object_->IsNull() || | 111 return object_->IsNull() || |
126 (did_jump_to_prototype_chain_ && | 112 (did_jump_to_prototype_chain_ && |
127 where_to_end == END_AT_NON_HIDDEN && | 113 where_to_end == END_AT_NON_HIDDEN && |
128 !HeapObject::cast(object_)->map()->is_hidden_prototype()); | 114 !HeapObject::cast(object_)->map()->is_hidden_prototype()); |
129 } else { | 115 } else { |
130 return handle_->IsNull() || | 116 return handle_->IsNull() || |
131 (did_jump_to_prototype_chain_ && | 117 (did_jump_to_prototype_chain_ && |
132 where_to_end == END_AT_NON_HIDDEN && | 118 where_to_end == END_AT_NON_HIDDEN && |
(...skipping 19 matching lines...) Expand all Loading... |
152 | 138 |
153 DISALLOW_COPY_AND_ASSIGN(PrototypeIterator); | 139 DISALLOW_COPY_AND_ASSIGN(PrototypeIterator); |
154 }; | 140 }; |
155 | 141 |
156 | 142 |
157 } // namespace internal | 143 } // namespace internal |
158 | 144 |
159 } // namespace v8 | 145 } // namespace v8 |
160 | 146 |
161 #endif // V8_PROTOTYPE_H_ | 147 #endif // V8_PROTOTYPE_H_ |
OLD | NEW |