/* Definitions for using pattern rules in GNU Make.
Copyright (C) 1988, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
This file is part of GNU Make.

GNU Make 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 Make 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 Make; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* Structure used for pattern rules.  */

struct rule
  {
    struct rule *next;
    char **targets;		/* Targets of the rule.  */
    unsigned int *lens;		/* Lengths of each target.  */
    char **suffixes;		/* Suffixes (after `%') of each target.  */
    struct dep *deps;		/* Dependencies of the rule.  */
    struct commands *cmds;	/* Commands to execute.  */
    char terminal;		/* If terminal (double-colon).  */
    char in_use;		/* If in use by a parent pattern_search.  */
  };

struct pattern_var
  {
    struct pattern_var *next;
    char *target;
    unsigned int len;
    char *suffix;
    struct variable_set_list *vars;
  };

/* For calling install_pattern_rule.  */
struct pspec
  {
    char *target, *dep, *commands;
  };


extern struct rule *pattern_rules;
extern struct rule *last_pattern_rule;
extern unsigned int num_pattern_rules;

extern unsigned int max_pattern_deps;
extern unsigned int max_pattern_targets;
extern unsigned int max_pattern_dep_length;

extern struct file *suffix_file;
extern unsigned int maxsuffix;


extern void install_pattern_rule PARAMS ((struct pspec *p, int terminal));
extern int new_pattern_rule PARAMS ((struct rule *rule, int override));
extern struct pattern_var *create_pattern_var PARAMS ((char *target, char *suffix));
extern struct pattern_var *lookup_pattern_var PARAMS ((char *target));
