102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
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/*
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* Copyright (c) 2000-2001
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#ifndef TERM_SORT_H
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#define TERM_SORT_H
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#include <stdio.h>
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#include "banshee.h"
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#include "termhash.h"
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#include "term-var.h"
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EXTERN_C_BEGIN
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extern bool flag_occurs_check;
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extern region term_sort_region;
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extern term_hash term_sort_hash;
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struct gen_term /* extends gen_e */
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{
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#ifdef NONSPEC
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const sort_kind sort;
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#endif
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const int type;
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const stamp st;
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};
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typedef struct gen_term *gen_term;
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/* return TRUE if v occurs in e, fals otherwise */
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typedef bool (* occurs_check_fn_ptr) (term_var v, gen_e e);
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stamp term_get_stamp(gen_e e);
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gen_e term_fresh(const char *name);
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gen_e term_fresh_large(const char *name);
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gen_e term_fresh_small(const char *name);
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gen_e term_zero(void);
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gen_e term_one(void);
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gen_e term_constant(const char *name);
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bool term_is_zero(gen_e e);
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bool term_is_one(gen_e e);
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bool term_is_var(gen_e e);
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bool term_is_constant(gen_e e);
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char *term_get_constant_name(gen_e e);
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gen_e term_get_ecr(gen_e e);
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void term_unify(con_match_fn_ptr con_match, occurs_check_fn_ptr occurs,
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gen_e e1, gen_e e2);
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void term_cunify(con_match_fn_ptr con_match, occurs_check_fn_ptr occurs,
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gen_e e1, gen_e e2);
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void term_print_stats(FILE *f);
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void term_print_constraint_graph(FILE *f);
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void term_init(void);
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void term_reset(void);
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extern struct term_stats term_stats;
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struct term_stats
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{
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int fresh;
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int fresh_small;
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int fresh_large;
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};
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EXTERN_C_END
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#endif /* TERM_SORT_H */
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