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/* Definitions for exception handling for use by the GNU compiler
for the Java(TM) language compiler.
Copyright (C) 1997, 98-99, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Java and all Java-based marks are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries.
The Free Software Foundation is independent of Sun Microsystems, Inc. */
struct eh_range
{
/* The (byte-code PC) range of the handled block. */
int start_pc;
int end_pc;
/* A list of handlers. For each element in the list,
the TREE_PURPOSE is the handled class (NULL_EXPR for a finally block),
and the TREE_VALUE is the LABEL_DECL of the handler. */
tree handlers;
/* Surrunding handler, if any. */
struct eh_range *outer;
/* The first child range. It is is nested inside this range
(i.e. this.start_pc <= first_child.end_pc
&& this.end_pc >= first_child.end_pc).
The children are linked together using next_sibling, and are sorted
by increasing start_pc and end_pc (we do not support non-nested
overlapping ranges). */
struct eh_range *first_child;
/* The next child of outer, in address order. */
struct eh_range *next_sibling;
/* True if this range has already been expanded. */
int expanded;
};
/* A dummy range that represents the entire method. */
extern struct eh_range whole_range;
#define NULL_EH_RANGE (&whole_range)
extern struct eh_range * find_handler PARAMS ((int));
extern void method_init_exceptions PARAMS ((void));
extern void emit_handlers PARAMS ((void));
extern void maybe_start_try PARAMS ((int, int));
extern void maybe_end_try PARAMS ((int, int));
extern void add_handler PARAMS ((int, int, tree, tree));
extern void handle_nested_ranges PARAMS ((void));
extern void expand_resume_after_catch PARAMS ((void));
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