kc3-lang/kc3/libkc3/alist.c

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• Hash : 57979c67
  Author : Thomas de Grivel
  Date : 2024-08-02T12:12:19
  

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• libkc3/alist.c

• /* kc3
   * Copyright 2022,2023,2024 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 <string.h>
  #include "alist.h"
  #include "alloc.h"
  #include "assert.h"
  #include "array.h"
  #include "buf.h"
  #include "buf_inspect.h"
  #include "buf_parse.h"
  #include "compare.h"
  #include "data.h"
  #include "list.h"
  #include "sym.h"
  #include "tag.h"
  #include "tuple.h"
  
  s_tag * alist_get (const s_list * const *alist, const s_tag *key,
                     s_tag *dest)
  {
    const s_list *l;
    assert(alist);
    assert(list_is_alist(alist));
    assert(key);
    assert(dest);
    l = *alist;
    while (l) {
      if (! compare_tag(&l->tag.data.tuple.tag[0], key))
        return tag_init_copy(dest, l->tag.data.tuple.tag + 1);
      l = list_next(l);
    }
    return NULL;
  }
  

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