gecko/dom/base/nsIBaseDOMException.h
2012-05-21 12:12:37 +01:00

92 lines
5.3 KiB
C++

/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsIBaseDOMException_h___
#define nsIBaseDOMException_h___
#include "nsIDOMClassInfo.h"
// {1f13b201-39fa-11d6-a7f2-df501ff820dc}
#define NS_BASE_DOM_EXCEPTION_CID \
{ 0x1f13b201, 0x39fa, 0x11d6, \
{ 0xa7, 0xf2, 0xdf, 0x50, 0x1f, 0xf8, 0x20, 0xdc } }
// {731d9701-39f8-11d6-a7f2-b39073384c9c}
#define NS_IBASEDOMEXCEPTION_IID \
{ 0xb33afd76, 0x5531, 0x423b, \
{ 0x99, 0x42, 0x90, 0x69, 0xf0, 0x9a, 0x3f, 0x5c } }
class nsIBaseDOMException : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IBASEDOMEXCEPTION_IID)
NS_IMETHOD Init(nsresult aNSResult, const char* aName,
const char* aMessage, PRUint16 aCode,
nsIException* aDefaultException) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIBaseDOMException, NS_IBASEDOMEXCEPTION_IID)
#define IMPL_DOM_EXCEPTION_HEAD(classname, ifname) \
class classname : public nsIException, \
public ifname \
{ \
public: \
classname(nsIException* aInner); \
virtual ~classname(); \
\
NS_DECL_ISUPPORTS \
NS_FORWARD_NSIEXCEPTION(mBase->)
// Note: the exception implemented by this macro doesn't free the pointers
// it gets from the mapping_function and assumes they will be valid
// as long as the exception object is alive.
#define IMPL_DOM_EXCEPTION_TAIL(classname, ifname, domname, module, \
mapping_function) \
private: \
nsCOMPtr<nsIException> mBase; \
}; \
\
classname::classname(nsIException* aInner) : mBase(aInner) \
{ \
} \
classname::~classname() {} \
\
NS_IMPL_ADDREF(classname) \
NS_IMPL_RELEASE(classname) \
NS_INTERFACE_MAP_BEGIN(classname) \
NS_INTERFACE_MAP_ENTRY(nsIException) \
NS_INTERFACE_MAP_ENTRY(ifname) \
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIException) \
NS_INTERFACE_MAP_ENTRY_EXTERNAL_DOM_CLASSINFO(domname) \
NS_INTERFACE_MAP_END \
\
NS_DEFINE_CID(kBaseDOMException_CID_##domname, NS_BASE_DOM_EXCEPTION_CID); \
\
nsresult \
NS_New##domname(nsresult aNSResult, nsIException* aDefaultException, \
nsIException** aException) \
{ \
if (!(NS_ERROR_GET_MODULE(aNSResult) == module)) { \
NS_WARNING("Trying to create an exception for the wrong error module."); \
return NS_ERROR_FAILURE; \
} \
const char* name; \
const char* message; \
mapping_function(aNSResult, &name, &message); \
nsCOMPtr<nsIBaseDOMException> baseException = \
do_CreateInstance(kBaseDOMException_CID_##domname); \
NS_ENSURE_TRUE(baseException, NS_ERROR_OUT_OF_MEMORY); \
baseException->Init(aNSResult, name, message, aDefaultException); \
nsCOMPtr<nsIException> inner = do_QueryInterface(baseException); \
*aException = new classname(inner); \
NS_ENSURE_TRUE(*aException, NS_ERROR_OUT_OF_MEMORY); \
NS_ADDREF(*aException); \
return NS_OK; \
}
#endif /* nsIBaseDOMException_h___ */