Improve this page Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone. Page wiki View or edit the community-maintained wiki page associated with this page.

core.exception

The exception module defines all system-level exceptions and provides a mechanism to alter system-level error handling.

License:
Distributed under the Boost Software License 1.0. (See accompanying file LICENSE)

Authors:
Sean Kelly and Jonathan M Davis

Source:
core/exception.d

class RangeError: object.Error;
Thrown on a range error.

class AssertError: object.Error;
Thrown on an assert error.

class FinalizeError: object.Error;
Thrown on finalize error.

class HiddenFuncError: object.Error;
Thrown on hidden function error.

class OutOfMemoryError: object.Error;
Thrown on an out of memory error.

class InvalidMemoryOperationError: object.Error;
Thrown on an invalid memory operation.

An invalid memory operation error occurs in circumstances when the garbage collector has detected an operation it cannot reliably handle. The default D GC is not re-entrant, so this can happen due to allocations done from within finalizers called during a garbage collection cycle.

class SwitchError: object.Error;
Thrown on a switch error.

class UnicodeException: object.Exception;
Thrown on a unicode conversion error.

alias AssertHandler = void function(string file, ulong line, string msg) nothrow;
nothrow @property @trusted AssertHandler assertHandler();
nothrow @property @trusted void assertHandler(AssertHandler handler);
Gets/sets assert hander. null means the default handler is used.

deprecated nothrow @trusted void setAssertHandler(AssertHandler h);
Overrides the default assert hander with a user-supplied version. Deprecated. Please use assertHandler instead.

Parameters:
AssertHandler h The new assert handler. Set to null to use the default handler.

nothrow void onAssertError(string file = __FILE__, size_t line = __LINE__);
A callback for assert errors in D. The user-supplied assert handler will be called if one has been supplied, otherwise an AssertError will be thrown.

Parameters:
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.

nothrow void onAssertErrorMsg(string file, size_t line, string msg);
A callback for assert errors in D. The user-supplied assert handler will be called if one has been supplied, otherwise an AssertError will be thrown.

Parameters:
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.
string msg An error message supplied by the user.

nothrow void onUnittestErrorMsg(string file, size_t line, string msg);
A callback for unittest errors in D. The user-supplied unittest handler will be called if one has been supplied, otherwise the error will be written to stderr.

Parameters:
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.
string msg An error message supplied by the user.

pure nothrow @safe void onRangeError(string file = __FILE__, size_t line = __LINE__);
A callback for array bounds errors in D. A RangeError will be thrown.

Parameters:
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.

Throws:
RangeError.

pure nothrow @safe void onFinalizeError(ClassInfo info, Exception e, string file = __FILE__, size_t line = __LINE__);
A callback for finalize errors in D. A FinalizeError will be thrown.

Parameters:
ClassInfo info The ClassInfo instance for the object that failed finalization.
Exception e The exception thrown during finalization.
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.

Throws:
FinalizeError.

pure nothrow @safe void onHiddenFuncError(Object o);
A callback for hidden function errors in D. A HiddenFuncError will be thrown.

Throws:
HiddenFuncError.

pure nothrow @trusted void onOutOfMemoryError();
A callback for out of memory errors in D. An OutOfMemoryError will be thrown.

Throws:
OutOfMemoryError.

pure nothrow @trusted void onInvalidMemoryOperationError();
A callback for invalid memory operations in D. An InvalidMemoryOperationError will be thrown.

Throws:
InvalidMemoryOperationError.

pure nothrow @safe void onSwitchError(string file = __FILE__, size_t line = __LINE__);
A callback for switch errors in D. A SwitchError will be thrown.

Parameters:
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.

Throws:
SwitchError.

pure @safe void onUnicodeError(string msg, size_t idx, string file = __FILE__, size_t line = __LINE__);
A callback for unicode errors in D. A UnicodeException will be thrown.

Parameters:
string msg Information about the error.
size_t idx String index where this error was detected.
string file The name of the file that signaled this error.
size_t line The line number on which this error occurred.

Throws:
UnicodeException.

void _d_assertm(ModuleInfo* m, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_assert_msg(string msg, string file, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_assert(string file, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_unittestm(ModuleInfo* m, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_unittest_msg(string msg, string file, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_unittest(string file, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_array_bounds(ModuleInfo* m, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_arraybounds(string file, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_switch_error(ModuleInfo* m, uint line);
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.

void _d_hidden_func();
These functions must be defined for any D program linked against this library.

Function calls to these are generated by the compiler and inserted into the object code.