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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 #include "src/runtime/runtime-utils.h" | 5 #include "src/runtime/runtime-utils.h" |
6 | 6 |
7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
8 #include "src/elements.h" | |
8 #include "src/factory.h" | 9 #include "src/factory.h" |
10 #include "src/isolate-inl.h" | |
9 #include "src/objects-inl.h" | 11 #include "src/objects-inl.h" |
10 | 12 |
11 namespace v8 { | 13 namespace v8 { |
12 namespace internal { | 14 namespace internal { |
13 | 15 |
14 | 16 |
17 // 9.5.13 [[Call]] (thisArgument, argumentsList) | |
Jakob Kummerow
2015/12/07 15:55:08
nit: include "ES6" please
| |
18 RUNTIME_FUNCTION(Runtime_JSProxyCall) { | |
Camillo Bruni
2015/12/07 13:26:23
Would it make sense to create a builtin instead? W
Jakob Kummerow
2015/12/07 15:55:08
A runtime function is fine, I think.
| |
19 HandleScope scope(isolate); | |
20 int const arguments_length = args.length() - 2; | |
21 DCHECK_LE(1, args.length()); | |
Jakob Kummerow
2015/12/07 15:55:08
s/1/2/, judging from the "- 2" above.
Camillo Bruni
2015/12/07 16:54:10
this is actually the size of the wrapper arguments
| |
22 // thisArgument == receiver | |
23 CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 0); | |
24 CONVERT_ARG_HANDLE_CHECKED(JSProxy, proxy, args.length() - 1); | |
25 Handle<String> trap_name = isolate->factory()->apply_string(); | |
26 // 1. Let handler be the value of the [[ProxyHandler]] internal slot of O. | |
27 Handle<Object> handler(proxy->handler(), isolate); | |
28 // 2. If handler is null, throw a TypeError exception. | |
29 if (proxy->IsRevoked()) { | |
30 THROW_NEW_ERROR_RETURN_FAILURE( | |
31 isolate, NewTypeError(MessageTemplate::kProxyRevoked, trap_name)); | |
32 } | |
33 // 3. Assert: Type(handler) is Object. | |
34 DCHECK(handler->IsJSReceiver()); | |
35 // 4. Let target be the value of the [[ProxyTarget]] internal slot of O. | |
36 Handle<JSReceiver> target(JSReceiver::cast(proxy->target()), isolate); | |
Jakob Kummerow
2015/12/07 15:55:08
nit: cast is unnecessary, proxy->target() returns
Camillo Bruni
2015/12/07 16:54:10
right.
| |
37 // 5. Let trap be ? GetMethod(handler, "apply"). | |
38 Handle<Object> trap; | |
39 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | |
40 isolate, trap, | |
41 Object::GetMethod(Handle<JSReceiver>::cast(handler), trap_name)); | |
42 // 6. If trap is undefined, then | |
43 if (trap->IsUndefined()) { | |
44 // 6.a. Return Call(target, thisArgument, argumentsList). | |
45 ScopedVector<Handle<Object>> argv(arguments_length); | |
46 for (int i = 0; i < arguments_length; ++i) { | |
47 argv[i] = args.at<Object>(i + 1); | |
48 } | |
49 Handle<Object> result; | |
50 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | |
51 isolate, result, Execution::Call(isolate, target, receiver, | |
52 arguments_length, argv.start())); | |
53 return *result; | |
54 } | |
55 // 7. Let argArray be CreateArrayFromList(argumentsList). | |
56 Handle<JSArray> arg_array = isolate->factory()->NewJSArray( | |
57 FAST_ELEMENTS, arguments_length, arguments_length); | |
58 ElementsAccessor* accessor = arg_array->GetElementsAccessor(); | |
59 { | |
60 DisallowHeapAllocation no_gc; | |
61 FixedArrayBase* elements = arg_array->elements(); | |
62 for (int i = 0; i < arguments_length; i++) { | |
63 accessor->Set(elements, i, args[i + 1]); | |
64 } | |
65 } | |
66 // 8. Return Call(trap, handler, «target, thisArgument, argArray»). | |
67 Handle<Object> trap_result; | |
68 Handle<Object> trap_args[] = {target, receiver, arg_array}; | |
69 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | |
70 isolate, trap_result, | |
71 Execution::Call(isolate, trap, handler, arraysize(trap_args), trap_args)); | |
72 return *trap_result; | |
73 } | |
74 | |
15 | 75 |
16 RUNTIME_FUNCTION(Runtime_IsJSProxy) { | 76 RUNTIME_FUNCTION(Runtime_IsJSProxy) { |
17 SealHandleScope shs(isolate); | 77 SealHandleScope shs(isolate); |
18 DCHECK(args.length() == 1); | 78 DCHECK(args.length() == 1); |
19 CONVERT_ARG_CHECKED(Object, obj, 0); | 79 CONVERT_ARG_CHECKED(Object, obj, 0); |
20 return isolate->heap()->ToBoolean(obj->IsJSProxy()); | 80 return isolate->heap()->ToBoolean(obj->IsJSProxy()); |
21 } | 81 } |
22 | 82 |
23 | 83 |
24 RUNTIME_FUNCTION(Runtime_GetHandler) { | 84 RUNTIME_FUNCTION(Runtime_GetHandler) { |
25 SealHandleScope shs(isolate); | 85 SealHandleScope shs(isolate); |
26 DCHECK(args.length() == 1); | 86 DCHECK(args.length() == 1); |
27 CONVERT_ARG_CHECKED(JSProxy, proxy, 0); | 87 CONVERT_ARG_CHECKED(JSProxy, proxy, 0); |
28 return proxy->handler(); | 88 return proxy->handler(); |
29 } | 89 } |
30 | 90 |
31 | 91 |
32 RUNTIME_FUNCTION(Runtime_RevokeProxy) { | 92 RUNTIME_FUNCTION(Runtime_RevokeProxy) { |
33 HandleScope scope(isolate); | 93 HandleScope scope(isolate); |
34 DCHECK(args.length() == 1); | 94 DCHECK(args.length() == 1); |
35 CONVERT_ARG_HANDLE_CHECKED(JSProxy, proxy, 0); | 95 CONVERT_ARG_HANDLE_CHECKED(JSProxy, proxy, 0); |
36 JSProxy::Revoke(proxy); | 96 JSProxy::Revoke(proxy); |
37 return isolate->heap()->undefined_value(); | 97 return isolate->heap()->undefined_value(); |
38 } | 98 } |
39 | 99 |
40 } // namespace internal | 100 } // namespace internal |
41 } // namespace v8 | 101 } // namespace v8 |
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