| 1 | /*
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| 2 | * Copyright (C) 2009 Apple Inc. All rights reserved.
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| 3 | *
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| 4 | * Redistribution and use in source and binary forms, with or without
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| 5 | * modification, are permitted provided that the following conditions
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| 6 | * are met:
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| 7 | * 1. Redistributions of source code must retain the above copyright
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| 8 | * notice, this list of conditions and the following disclaimer.
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| 9 | * 2. Redistributions in binary form must reproduce the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer in the
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| 11 | * documentation and/or other materials provided with the distribution.
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| 12 | *
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| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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| 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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| 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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| 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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| 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 24 | */
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| 25 |
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| 26 | #ifndef CachedCall_h
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| 27 | #define CachedCall_h
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| 28 |
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| 29 | #include "CallFrameClosure.h"
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| 30 | #include "JSFunction.h"
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| 31 | #include "JSGlobalObject.h"
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| 32 | #include "Interpreter.h"
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| 33 |
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| 34 | namespace JSC {
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| 35 | class CachedCall : public Noncopyable {
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| 36 | public:
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| 37 | CachedCall(CallFrame* callFrame, JSFunction* function, int argCount, JSValue* exception)
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| 38 | : m_valid(false)
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| 39 | , m_interpreter(callFrame->interpreter())
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| 40 | , m_exception(exception)
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| 41 | , m_globalObjectScope(callFrame, function->scope().globalObject())
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| 42 | {
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| 43 | ASSERT(!function->isHostFunction());
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| 44 | m_closure = m_interpreter->prepareForRepeatCall(function->jsExecutable(), callFrame, function, argCount, function->scope().node(), exception);
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| 45 | m_valid = !*exception;
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| 46 | }
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| 47 |
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| 48 | JSValue call()
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| 49 | {
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| 50 | ASSERT(m_valid);
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| 51 | return m_interpreter->execute(m_closure, m_exception);
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| 52 | }
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| 53 | void setThis(JSValue v) { m_closure.setArgument(0, v); }
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| 54 | void setArgument(int n, JSValue v) { m_closure.setArgument(n + 1, v); }
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| 55 |
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| 56 | CallFrame* newCallFrame(ExecState* exec)
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| 57 | {
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| 58 | CallFrame* callFrame = m_closure.newCallFrame;
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| 59 | callFrame->setScopeChain(exec->scopeChain());
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| 60 | return callFrame;
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| 61 | }
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| 62 |
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| 63 | ~CachedCall()
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| 64 | {
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| 65 | if (m_valid)
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| 66 | m_interpreter->endRepeatCall(m_closure);
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| 67 | }
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| 68 |
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| 69 | private:
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| 70 | bool m_valid;
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| 71 | Interpreter* m_interpreter;
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| 72 | JSValue* m_exception;
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| 73 | DynamicGlobalObjectScope m_globalObjectScope;
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| 74 | CallFrameClosure m_closure;
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| 75 | };
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| 76 | }
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| 77 |
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| 78 | #endif
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