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34 #include "bindings/v8/ScopedPersistent.h"
35 #include "bindings/v8/V8Utilities.h"
37 #include "wtf/Noncopyable.h"
42 class DOMWrapperWorld;
44 class ExecutionContext;
45 class WorkerGlobalScope;
48 WTF_MAKE_NONCOPYABLE(ScriptState);
50 bool hadException() { return !m_exception.isEmpty(); }
51 void setException(v8::Local<v8::Value> exception)
53 m_exception.set(m_isolate, exception);
55 v8::Local<v8::Value> exception() { return m_exception.newLocal(m_isolate); }
56 void clearException() { m_exception.clear(); }
58 v8::Local<v8::Context> context() const
60 return m_context.newLocal(m_isolate);
63 v8::Isolate* isolate()
68 DOMWindow* domWindow() const;
69 ExecutionContext* executionContext() const;
70 bool evalEnabled() const;
71 void setEvalEnabled(bool);
73 static ScriptState* forContext(v8::Handle<v8::Context>);
74 static ScriptState* current();
78 : m_isolate(v8::Isolate::GetCurrent())
85 friend ScriptState* mainWorldScriptState(Frame*);
86 explicit ScriptState(v8::Handle<v8::Context>);
88 static void setWeakCallback(const v8::WeakCallbackData<v8::Context, ScriptState>&);
90 ScopedPersistent<v8::Value> m_exception;
91 ScopedPersistent<v8::Context> m_context;
92 v8::Isolate* m_isolate;
95 class ScriptStateProtectedPtr {
96 WTF_MAKE_NONCOPYABLE(ScriptStateProtectedPtr);
98 ScriptStateProtectedPtr()
103 ScriptStateProtectedPtr(ScriptState* scriptState)
104 : m_scriptState(scriptState)
106 v8::HandleScope handleScope(scriptState->isolate());
107 // Keep the context from being GC'ed. ScriptState is guaranteed to be live while the context is live.
108 m_context.set(scriptState->isolate(), scriptState->context());
111 ScriptState* get() const { return m_scriptState; }
114 ScriptState* m_scriptState;
115 ScopedPersistent<v8::Context> m_context;
118 ScriptState* mainWorldScriptState(Frame*);
120 ScriptState* scriptStateFromWorkerGlobalScope(WorkerGlobalScope*);
124 #endif // ScriptState_h