gcc/java/java-except.h

   1 /* Definitions for exception handling for use by the GNU compiler
   2    for the Java(TM) language compiler.
   3    Copyright (C) 1997-2016 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.
  20
  21 Java and all Java-based marks are trademarks or registered trademarks
  22 of Sun Microsystems, Inc. in the United States and other countries.
  23 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  24
  25 struct eh_range
  26   {
  27     /* The (byte-code PC) range of the handled block. */
  28     int start_pc;
  29     int end_pc;
  30
  31     /* A list of handlers.  For each element in the list,
  32        the TREE_PURPOSE is the handled class (NULL_EXPR for a finally block),
  33        and the TREE_VALUE is the LABEL_DECL of the handler. */
  34     tree handlers;
  35
  36     /* Surrounding handler, if any. */
  37     struct eh_range *outer;
  38
  39     /* The first child range.  It is nested inside this range
  40        (i.e. this.start_pc <= first_child.end_pc
  41        && this.end_pc >= first_child.end_pc).
  42        The children are linked together using next_sibling, and are sorted
  43        by increasing start_pc and end_pc (we do not support non-nested
  44        overlapping ranges). */
  45     struct eh_range *first_child;
  46
  47     /* The next child of outer, in address order. */
  48     struct eh_range *next_sibling;
  49
  50     /* True if this range has already been expanded. */
  51     int expanded;
  52
  53     /* The TRY_CATCH_EXPR for this EH range.  */
  54     tree stmt;
  55   };
  56
  57 /* A dummy range that represents the entire method. */
  58 extern struct eh_range whole_range;
  59
  60 #define NULL_EH_RANGE (&whole_range)
  61
  62 extern struct eh_range * find_handler (int);
  63 extern void method_init_exceptions (void);
  64 extern void maybe_start_try (int, int);
  65 extern void add_handler (int, int, tree, tree);
  66 extern void expand_end_java_handler (struct eh_range *);
  67 extern bool sanity_check_exception_range (struct eh_range *);