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-rw-r--r--xpcom/base/nsObjCExceptions.h56
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diff --git a/xpcom/base/nsObjCExceptions.h b/xpcom/base/nsObjCExceptions.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 nsObjCExceptions_h_
+#define nsObjCExceptions_h_
+
+// Undo the damage that exception_defines.h does.
+#undef try
+#undef catch
+
+@class NSException;
+
+// See Mozilla bug 163260.
+// This file can only be included in an Objective-C context.
+
+void nsObjCExceptionLog(NSException* aException);
+
+namespace mozilla {
+
+// Check if this is an exception that's outside of our control.
+// Called when an exception bubbles up to the native event loop.
+bool ShouldIgnoreObjCException(NSException* aException);
+
+} // namespace mozilla
+
+// For wrapping blocks of Obj-C calls which are not expected to throw exception.
+// Causes a MOZ_CRASH if an Obj-C exception is encountered.
+#define NS_OBJC_BEGIN_TRY_ABORT_BLOCK @try {
+#define NS_OBJC_END_TRY_ABORT_BLOCK \
+ } \
+ @catch (NSException * _exn) { \
+ nsObjCExceptionLog(_exn); \
+ MOZ_CRASH("Encountered unexpected Objective C exception"); \
+ }
+
+// For wrapping blocks of Obj-C calls. Logs the exception and moves on.
+#define NS_OBJC_BEGIN_TRY_IGNORE_BLOCK @try {
+#define NS_OBJC_END_TRY_IGNORE_BLOCK \
+ } \
+ @catch (NSException * _exn) { \
+ nsObjCExceptionLog(_exn); \
+ }
+
+// Same as above IGNORE_BLOCK but returns a value after the try/catch block.
+#define NS_OBJC_BEGIN_TRY_BLOCK_RETURN @try {
+#define NS_OBJC_END_TRY_BLOCK_RETURN(_rv) \
+ } \
+ @catch (NSException * _exn) { \
+ nsObjCExceptionLog(_exn); \
+ } \
+ return _rv;
+
+#endif // nsObjCExceptions_h_