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31 #ifndef ScriptPromise_h
32 #define ScriptPromise_h
34 #include "bindings/v8/ScopedPersistent.h"
35 #include "bindings/v8/ScriptFunction.h"
36 #include "bindings/v8/ScriptValue.h"
37 #include "bindings/v8/V8ScriptRunner.h"
38 #include "wtf/Forward.h"
43 class ExecutionContext;
45 // ScriptPromise is the class for representing Promise values in C++ world.
46 // ScriptPromise holds a Promise.
47 // So holding a ScriptPromise as a member variable in DOM object causes
48 // memory leaks since it has a reference from C++ to V8.
52 // Constructs an empty promise.
55 // Constructs a ScriptPromise from |value|.
56 // i.e. the constructed ScriptPromise holds |Promise.cast(value)|.
57 // Note: if |value| is a non-Promise value, two ScriptPromises constructed
58 // with it hold different Promises each other.
59 explicit ScriptPromise(const ScriptValue& /* value */);
61 ScriptPromise(v8::Handle<v8::Value> promise, v8::Isolate* isolate)
62 : m_promise(promise, isolate)
64 ASSERT(!m_promise.hasNoValue());
67 ScriptPromise then(PassOwnPtr<ScriptFunction> onFulfilled, PassOwnPtr<ScriptFunction> onRejected = PassOwnPtr<ScriptFunction>());
71 return m_promise.isObject();
76 return m_promise.isNull();
79 bool isUndefinedOrNull() const
81 return m_promise.isUndefined() || m_promise.isNull();
84 v8::Handle<v8::Value> v8Value() const
86 return m_promise.v8Value();
89 v8::Isolate* isolate() const
91 return m_promise.isolate();
94 bool hasNoValue() const
96 return m_promise.hasNoValue();
104 static ScriptPromise createPending();
105 static ScriptPromise createPending(ExecutionContext*);
108 ScriptValue m_promise;
111 } // namespace WebCore
114 #endif // ScriptPromise_h