mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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108 lines
3.8 KiB
C++
108 lines
3.8 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ExceptionScope.h"
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namespace JSC {
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class ExecState;
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class JSObject;
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#if ENABLE(EXCEPTION_SCOPE_VERIFICATION)
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// If a function can throw a JS exception, it should declare a ThrowScope at the
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// top of the function (as early as possible) using the DECLARE_THROW_SCOPE macro.
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// Declaring a ThrowScope in a function means that the function may throw an
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// exception that its caller will have to handle.
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class ThrowScope : public ExceptionScope {
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public:
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JS_EXPORT_PRIVATE ThrowScope(VM&, ExceptionEventLocation);
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JS_EXPORT_PRIVATE ~ThrowScope();
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ThrowScope(const ThrowScope&) = delete;
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ThrowScope(ThrowScope&&) = default;
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JS_EXPORT_PRIVATE void throwException(ExecState*, Exception*);
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JS_EXPORT_PRIVATE JSValue throwException(ExecState*, JSValue);
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JS_EXPORT_PRIVATE JSObject* throwException(ExecState*, JSObject*);
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void release() { m_isReleased = true; }
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JS_EXPORT_PRIVATE void printIfNeedCheck(const char* functionName, const char* file, unsigned line);
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private:
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void simulateThrow();
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bool m_isReleased { false };
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};
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#define DECLARE_THROW_SCOPE(vm__) \
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JSC::ThrowScope((vm__), JSC::ExceptionEventLocation(__FUNCTION__, __FILE__, __LINE__))
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#define throwScopePrintIfNeedCheck(scope__) \
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scope__.printIfNeedCheck(__FUNCTION__, __FILE__, __LINE__)
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#else // not ENABLE(EXCEPTION_SCOPE_VERIFICATION)
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class ThrowScope : public ExceptionScope {
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public:
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ALWAYS_INLINE ThrowScope(VM& vm)
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: ExceptionScope(vm)
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{ }
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ThrowScope(const ThrowScope&) = delete;
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ThrowScope(ThrowScope&&) = default;
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ALWAYS_INLINE void throwException(ExecState* exec, Exception* exception) { m_vm.throwException(exec, exception); }
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ALWAYS_INLINE JSValue throwException(ExecState* exec, JSValue value) { return m_vm.throwException(exec, value); }
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ALWAYS_INLINE JSObject* throwException(ExecState* exec, JSObject* obj) { return m_vm.throwException(exec, obj); }
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ALWAYS_INLINE void release() { }
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};
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#define DECLARE_THROW_SCOPE(vm__) \
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JSC::ThrowScope((vm__))
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#endif // ENABLE(EXCEPTION_SCOPE_VERIFICATION)
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ALWAYS_INLINE void throwException(ExecState* exec, ThrowScope& scope, Exception* exception)
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{
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scope.throwException(exec, exception);
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}
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ALWAYS_INLINE JSValue throwException(ExecState* exec, ThrowScope& scope, JSValue value)
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{
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return scope.throwException(exec, value);
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}
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ALWAYS_INLINE JSObject* throwException(ExecState* exec, ThrowScope& scope, JSObject* obj)
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{
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return scope.throwException(exec, obj);
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}
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} // namespace JSC
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