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| 1 /* | |
| 2 * Copyright (C) 2013, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | |
| 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | |
| 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 23 */ | |
| 24 | |
| 25 #ifndef V8PromiseCustom_h | |
| 26 #define V8PromiseCustom_h | |
| 27 | |
| 28 #include "bindings/v8/WrapperTypeInfo.h" | |
| 29 | |
| 30 #include <v8.h> | |
| 31 | |
| 32 namespace WebCore { | |
| 33 | |
| 34 class V8PromiseCustom { | |
| 35 public: | |
| 36 enum InternalFieldIndex { | |
| 37 InternalStateIndex, | |
| 38 InternalResultIndex, | |
| 39 InternalFulfillCallbackIndex, | |
| 40 InternalRejectCallbackIndex, | |
| 41 InternalDerivedPromiseIndex, | |
| 42 InternalFieldCount, // This entry must always be at the bottom. | |
| 43 }; | |
| 44 | |
| 45 enum PromiseAllEnvironmentFieldIndex { | |
| 46 PromiseAllEnvironmentPromiseIndex, | |
| 47 PromiseAllEnvironmentCountdownIndex, | |
| 48 PromiseAllEnvironmentIndexIndex, | |
| 49 PromiseAllEnvironmentResultsIndex, | |
| 50 PromiseAllEnvironmentFieldCount, // This entry must always be at the bot
tom. | |
| 51 }; | |
| 52 | |
| 53 enum PrimitiveWrapperFieldIndex { | |
| 54 PrimitiveWrapperPrimitiveIndex, | |
| 55 PrimitiveWrapperFieldCount, // This entry must always be at the bottom. | |
| 56 }; | |
| 57 | |
| 58 enum PromiseState { | |
| 59 Pending, | |
| 60 Fulfilled, | |
| 61 Rejected, | |
| 62 Following, | |
| 63 }; | |
| 64 | |
| 65 static v8::Local<v8::Object> createPromise(v8::Handle<v8::Object> creationCo
ntext, v8::Isolate*); | |
| 66 | |
| 67 // |promise| must be a Promise instance. | |
| 68 static v8::Local<v8::Object> getInternal(v8::Handle<v8::Object> promise); | |
| 69 | |
| 70 // |internal| must be a Promise internal object. | |
| 71 static PromiseState getState(v8::Handle<v8::Object> internal); | |
| 72 | |
| 73 // Return true if |maybePromise| is a Promise instance. | |
| 74 static bool isPromise(v8::Handle<v8::Value> maybePromise, v8::Isolate*); | |
| 75 | |
| 76 // Coerces |maybePromise| to a Promise instance. | |
| 77 static v8::Local<v8::Object> toPromise(v8::Handle<v8::Value> maybePromise, v
8::Isolate*); | |
| 78 | |
| 79 // |promise| must be a Promise instance. | |
| 80 static void resolve(v8::Handle<v8::Object> promise, v8::Handle<v8::Value> re
sult, v8::Isolate*); | |
| 81 | |
| 82 // |promise| must be a Promise instance. | |
| 83 static void reject(v8::Handle<v8::Object> promise, v8::Handle<v8::Value> res
ult, v8::Isolate*); | |
| 84 | |
| 85 // |promise| must be a Promise instance. | |
| 86 // |onFulfilled| and |onRejected| can be an empty value respectively. | |
| 87 // Appends |onFulfilled| and/or |onRejected| handlers to |promise|. | |
| 88 static v8::Local<v8::Object> then(v8::Handle<v8::Object> promise, v8::Handle
<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Isolate*); | |
| 89 | |
| 90 // |promise| must be a Promise instance. | |
| 91 // Set a |promise|'s value and propagate it to derived promises. | |
| 92 static void setValue(v8::Handle<v8::Object> promise, v8::Handle<v8::Value>,
v8::Isolate*); | |
| 93 | |
| 94 // |promise| must be a Promise instance. | |
| 95 // Set a |promise|'s failure reason and propagate it to derived promises. | |
| 96 static void setReason(v8::Handle<v8::Object> promise, v8::Handle<v8::Value>,
v8::Isolate*); | |
| 97 | |
| 98 // |promise| must be a Promise instance. | |
| 99 // Propagate a |promise|'s value or reason to all of its derived promies. | |
| 100 static void propagateToDerived(v8::Handle<v8::Object> promise, v8::Isolate*)
; | |
| 101 | |
| 102 // |derivedPromise| and |originator| must be a Promise instance. | |
| 103 // |onFulfilled| and |onRejected| can be an empty value respectively. | |
| 104 // Propagate |originator|'s state to |derivedPromise|. | |
| 105 static void updateDerived(v8::Handle<v8::Object> derivedPromise, v8::Handle<
v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Handle<v8::O
bject> originator, v8::Isolate*); | |
| 106 | |
| 107 // |derivedPromise| must be a Promise instance. | |
| 108 // Propagate a value to |derivedPromise|. | |
| 109 static void updateDerivedFromValue(v8::Handle<v8::Object> derivedPromise, v8
::Handle<v8::Function> onFulfilled, v8::Handle<v8::Value>, v8::Isolate*); | |
| 110 | |
| 111 // |derivedPromise| must be a Promise instance. | |
| 112 // Propagate a failure reason to |derivedPromise|. | |
| 113 static void updateDerivedFromReason(v8::Handle<v8::Object> derivedPromise, v
8::Handle<v8::Function> onRejected, v8::Handle<v8::Value>, v8::Isolate*); | |
| 114 | |
| 115 // |derivedPromise| and |promise| must be a Promise instance. | |
| 116 // |onFulfilled| and |onRejected| can be an empty value respectively. | |
| 117 // Propagate |promise|'s state to |derivedPromise|. | |
| 118 static void updateDerivedFromPromise(v8::Handle<v8::Object> derivedPromise,
v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::H
andle<v8::Object> promise, v8::Isolate*); | |
| 119 | |
| 120 // Returns a Promise instance that will be fulfilled or rejected by | |
| 121 // |thenable|'s result. | |
| 122 static v8::Local<v8::Object> coerceThenable(v8::Handle<v8::Object> thenable,
v8::Handle<v8::Function> then, v8::Isolate*); | |
| 123 | |
| 124 // |promise| must be a Promise instance. | |
| 125 // Applies a transformation to an argument and use it to update derived | |
| 126 // promies. | |
| 127 static void callHandler(v8::Handle<v8::Object> promise, v8::Handle<v8::Funct
ion> handler, v8::Handle<v8::Value> argument, PromiseState originatorState, v8::
Isolate*); | |
| 128 }; | |
| 129 | |
| 130 } // namespace WebCore | |
| 131 | |
| 132 #endif // V8PromiseCustom_h | |
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