1/*
2 * Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
3 * Copyright (C) 2003-2006, 2008-2009, 2013, 2016 Apple Inc. All rights reserved.
4 * Copyright (C) 2007 Samuel Weinig <sam@webkit.org>
5 * Copyright (C) 2009 Google, Inc. All rights reserved.
6 * Copyright (C) 2012 Ericsson AB. All rights reserved.
7 * Copyright (C) 2013 Michael Pruett <michael@68k.org>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#pragma once
25
26#include "JSDOMCastedThisErrorBehavior.h"
27#include "JSDOMExceptionHandling.h"
28
29namespace WebCore {
30
31template<typename JSClass>
32class IDLOperation {
33public:
34 using ClassParameter = JSClass*;
35 using Operation = JSC::EncodedJSValue(JSC::ExecState*, ClassParameter, JSC::ThrowScope&);
36 using StaticOperation = JSC::EncodedJSValue(JSC::ExecState*, JSC::ThrowScope&);
37
38 static JSClass* cast(JSC::ExecState&);
39
40 template<Operation operation, CastedThisErrorBehavior shouldThrow = CastedThisErrorBehavior::Throw>
41 static JSC::EncodedJSValue call(JSC::ExecState& state, const char* operationName)
42 {
43 auto throwScope = DECLARE_THROW_SCOPE(state.vm());
44
45 auto* thisObject = cast(state);
46 if (shouldThrow != CastedThisErrorBehavior::Assert && UNLIKELY(!thisObject))
47 return throwThisTypeError(state, throwScope, JSClass::info()->className, operationName);
48
49 ASSERT(thisObject);
50 ASSERT_GC_OBJECT_INHERITS(thisObject, JSClass::info());
51
52 // FIXME: We should refactor the binding generated code to use references for state and thisObject.
53 return operation(&state, thisObject, throwScope);
54 }
55
56 template<StaticOperation operation, CastedThisErrorBehavior shouldThrow = CastedThisErrorBehavior::Throw>
57 static JSC::EncodedJSValue callStatic(JSC::ExecState& state, const char*)
58 {
59 auto throwScope = DECLARE_THROW_SCOPE(state.vm());
60
61 // FIXME: We should refactor the binding generated code to use references for state.
62 return operation(&state, throwScope);
63 }
64};
65
66} // namespace WebCore
67