/* A splay-tree datatype.
- Copyright (C) 1998 Free Software Foundation, Inc.
+ Copyright 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
Contributed by Mark Mitchell (mark@markmitchell.com).
- This file is part of GNU CC.
+This file is part of GCC.
- 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.
+GCC 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.
+GCC 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
- For an easily readable description of splay-trees, see:
+/* For an easily readable description of splay-trees, see:
Lewis, Harry R. and Denenberg, Larry. Data Structures and Their
Algorithms. Harper-Collins, Inc. 1991.
extern "C" {
#endif /* __cplusplus */
-#ifdef IN_GCC
-#include "gansidecl.h"
-#define PARAMS(ARGS) PROTO(ARGS)
-#else /* ! IN_GCC */
-#include <ansidecl.h>
-#endif /* IN_GCC */
+#include "ansidecl.h"
+
+#ifndef GTY
+#define GTY(X)
+#endif
/* Use typedefs for the key and data types to facilitate changing
these types, if necessary. These types should be sufficiently wide
typedef unsigned long int splay_tree_value;
/* Forward declaration for a node in the tree. */
-typedef struct splay_tree_node *splay_tree_node;
+typedef struct splay_tree_node_s *splay_tree_node;
/* The type of a function which compares two splay-tree keys. The
function should return values as for qsort. */
-typedef int (*splay_tree_compare_fn)(splay_tree_key, splay_tree_key);
+typedef int (*splay_tree_compare_fn) PARAMS((splay_tree_key, splay_tree_key));
/* The type of a function used to deallocate any resources associated
with the key. */
-typedef void (*splay_tree_delete_key_fn)(splay_tree_key);
+typedef void (*splay_tree_delete_key_fn) PARAMS((splay_tree_key));
/* The type of a function used to deallocate any resources associated
with the value. */
-typedef void (*splay_tree_delete_value_fn)(splay_tree_value);
+typedef void (*splay_tree_delete_value_fn) PARAMS((splay_tree_value));
/* The type of a function used to iterate over the tree. */
-typedef int (*splay_tree_foreach_fn)(splay_tree_node, void*);
+typedef int (*splay_tree_foreach_fn) PARAMS((splay_tree_node, void*));
+
+/* The type of a function used to allocate memory for tree root and
+ node structures. The first argument is the number of bytes needed;
+ the second is a data pointer the splay tree functions pass through
+ to the allocator. This function must never return zero. */
+typedef PTR (*splay_tree_allocate_fn) PARAMS((int, void *));
+
+/* The type of a function used to free memory allocated using the
+ corresponding splay_tree_allocate_fn. The first argument is the
+ memory to be freed; the latter is a data pointer the splay tree
+ functions pass through to the freer. */
+typedef void (*splay_tree_deallocate_fn) PARAMS((void *, void *));
/* The nodes in the splay tree. */
-struct splay_tree_node
+struct splay_tree_node_s GTY(())
{
/* The key. */
- splay_tree_key key;
+ splay_tree_key GTY ((use_param1)) key;
/* The value. */
- splay_tree_value value;
+ splay_tree_value GTY ((use_param2)) value;
/* The left and right children, respectively. */
- splay_tree_node left;
- splay_tree_node right;
+ splay_tree_node GTY ((use_params)) left;
+ splay_tree_node GTY ((use_params)) right;
};
/* The splay tree itself. */
-typedef struct splay_tree
+struct splay_tree_s GTY(())
{
/* The root of the tree. */
- splay_tree_node root;
+ splay_tree_node GTY ((use_params)) root;
/* The comparision function. */
splay_tree_compare_fn comp;
/* The deallocate-value function. NULL if no cleanup is necessary. */
splay_tree_delete_value_fn delete_value;
-} *splay_tree;
+
+ /* Allocate/free functions, and a data pointer to pass to them. */
+ splay_tree_allocate_fn allocate;
+ splay_tree_deallocate_fn deallocate;
+ PTR GTY((skip)) allocate_data;
+
+};
+typedef struct splay_tree_s *splay_tree;
extern splay_tree splay_tree_new PARAMS((splay_tree_compare_fn,
splay_tree_delete_key_fn,
splay_tree_delete_value_fn));
+extern splay_tree splay_tree_new_with_allocator
+ PARAMS((splay_tree_compare_fn,
+ splay_tree_delete_key_fn,
+ splay_tree_delete_value_fn,
+ splay_tree_allocate_fn,
+ splay_tree_deallocate_fn,
+ void *));
extern void splay_tree_delete PARAMS((splay_tree));
-extern void splay_tree_insert PARAMS((splay_tree,
+extern splay_tree_node splay_tree_insert
+ PARAMS((splay_tree,
splay_tree_key,
splay_tree_value));
+extern void splay_tree_remove PARAMS((splay_tree,
+ splay_tree_key));
extern splay_tree_node splay_tree_lookup
PARAMS((splay_tree,
splay_tree_key));
+extern splay_tree_node splay_tree_predecessor
+ PARAMS((splay_tree,
+ splay_tree_key));
+extern splay_tree_node splay_tree_successor
+ PARAMS((splay_tree,
+ splay_tree_key));
+extern splay_tree_node splay_tree_max
+ PARAMS((splay_tree));
+extern splay_tree_node splay_tree_min
+ PARAMS((splay_tree));
extern int splay_tree_foreach PARAMS((splay_tree,
splay_tree_foreach_fn,
void*));
+extern int splay_tree_compare_ints PARAMS((splay_tree_key,
+ splay_tree_key));
+extern int splay_tree_compare_pointers PARAMS((splay_tree_key,
+ splay_tree_key));
#ifdef __cplusplus
}
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