kc3-lang/kc3/libc3/fn.c

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• Hash : 3d8d7728
  Author : Thomas de Grivel
  Date : 2023-03-23T17:19:58
  

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• libc3/fn.c

• /* c3
   * Copyright 2022,2023 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  #include <assert.h>
  #include <err.h>
  #include <stdlib.h>
  #include <strings.h>
  #include "arg.h"
  #include "binding.h"
  #include "fn.h"
  #include "list.h"
  
  void fn_clean (s_fn *fn)
  {
    assert(fn);
    list_delete_all(fn->pattern);
    list_delete_all(fn->algo);
  }
  
  s_fn * fn_copy (const s_fn *src, s_fn **dest)
  {
    s_fn *tmp = NULL;
    s_fn **tail = &tmp;
    while (src) {
      *tail = fn_new(NULL);
      (*tail)->arity = src->arity;
      list_copy(src->pattern, &(*tail)->pattern);
      list_copy(src->algo, &(*tail)->algo);
      src = src->next_clause;
      tail = &(*tail)->next_clause;
    }
    *dest = tmp;
    return tmp;
  }
  
  s_fn * fn_delete (s_fn *fn)
  {
    s_fn *next_clause;
    assert(fn);
    next_clause = fn->next_clause;
    fn_clean(fn);
    free(fn);
    return next_clause;
  }
  
  void fn_delete_all (s_fn *fn)
  {
    while (fn)
      fn = fn_delete(fn);
  }
  
  s_fn * fn_init (s_fn *fn, s_fn *next_clause)
  {
    assert(fn);
    bzero(fn, sizeof(s_fn));
    fn->next_clause = next_clause;
    return fn;
  }
  
  s_fn * fn_new (s_fn *next_clause)
  {
    s_fn *fn;
    if (! (fn = malloc(sizeof(s_fn))))
      err(1, "out of memory");
    fn_init(fn, next_clause);
    return fn;
  }
  

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