/* Exception (throw catch) mechanism, for GDB, the GNU debugger.
- Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef EXCEPTIONS_H
#define EXCEPTIONS_H
-#include "common-exceptions.h"
#include "ui-out.h"
-/* A pre-defined non-exception. */
-extern const struct gdb_exception exception_none;
-
/* If E is an exception, print it's error message on the specified
stream. For _fprintf, prefix the message with PREFIX... */
-extern void exception_print (struct ui_file *file, struct gdb_exception e);
-extern void exception_fprintf (struct ui_file *file, struct gdb_exception e,
+extern void exception_print (struct ui_file *file,
+ const struct gdb_exception &e);
+extern void exception_fprintf (struct ui_file *file,
+ const struct gdb_exception &e,
const char *prefix,
...) ATTRIBUTE_PRINTF (3, 4);
-/* Call FUNC(UIOUT, FUNC_ARGS) but wrapped within an exception
- handler. If an exception (enum return_reason) is thrown using
- throw_exception() than all cleanups installed since
- catch_exceptions() was entered are invoked, the (-ve) exception
- value is then returned by catch_exceptions. If FUNC() returns
- normally (with a positive or zero return value) then that value is
- returned by catch_exceptions(). It is an internal_error() for
- FUNC() to return a negative value.
-
- For the period of the FUNC() call: UIOUT is installed as the output
- builder; ERRSTRING is installed as the error/quit message; and a
- new cleanup_chain is established. The old values are restored
- before catch_exceptions() returns.
-
- The variant catch_exceptions_with_msg() is the same as
- catch_exceptions() but adds the ability to return an allocated
- copy of the gdb error message. This is used when a silent error is
- issued and the caller wants to manually issue the error message.
-
- MASK specifies what to catch; it is normally set to
- RETURN_MASK_ALL, if for no other reason than that the code which
- calls catch_errors might not be set up to deal with a quit which
- isn't caught. But if the code can deal with it, it generally
- should be RETURN_MASK_ERROR, unless for some reason it is more
- useful to abort only the portion of the operation inside the
- catch_errors. Note that quit should return to the command line
- fairly quickly, even if some further processing is being done.
-
- FIXME; cagney/2001-08-13: The need to override the global UIOUT
- builder variable should just go away.
-
- This function supersedes catch_errors().
-
- This function uses SETJMP() and LONGJUMP(). */
-
-struct ui_out;
-typedef int (catch_exceptions_ftype) (struct ui_out *ui_out, void *args);
-extern int catch_exceptions (struct ui_out *uiout,
- catch_exceptions_ftype *func, void *func_args,
- return_mask mask);
-typedef void (catch_exception_ftype) (struct ui_out *ui_out, void *args);
-extern int catch_exceptions_with_msg (struct ui_out *uiout,
- catch_exceptions_ftype *func,
- void *func_args,
- char **gdberrmsg,
- return_mask mask);
-
-/* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
- otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
- probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
- value. It's unfortunate that, catch_errors() does not return an
- indication of the exact exception that it caught - quit_flag might
- help.
-
- This function is superseded by catch_exceptions(). */
-
-typedef int (catch_errors_ftype) (void *);
-extern int catch_errors (catch_errors_ftype *, void *, char *, return_mask);
-
+/* Compare two exception objects for print equality. */
+extern int exception_print_same (const struct gdb_exception &e1,
+ const struct gdb_exception &e2);
#endif