kc3-lang/kc3/libkc3/ptag.c

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• Hash : 1ae6ad0e
  Author : Thomas de Grivel
  Date : 2024-07-15T19:59:52
  

  rename c3 to kc3, fix update_source, configure, build

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• libkc3/ptag.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 "assert.h"
  #include "ptag.h"
  #include "sym.h"
  #include "tag_type.h"
  
  p_tag * ptag_init_cast (p_tag *ptag, const s_sym * const *type,
                          const s_tag *tag)
  {
    assert(ptag);
    assert(type);
    assert(tag);
    switch (tag->type) {
    case TAG_PTAG:
      return ptag_init_copy(ptag, &tag->data.ptag);
    default:
      break;
    }
    err_write_1("ptag_init_cast: cannot cast ");
    err_write_1(tag_type_to_string(tag->type));
    if (*type == &g_sym_Ptag)
      err_puts(" to Ptag");
    else {
      err_write_1(" to ");
      err_inspect_sym(type);
      err_puts(" aka Ptag");
    }
    assert(! "ptag_init_cast: cannot cast to Ptag");
    return NULL;
  }
  
  p_tag * ptag_init_copy (p_tag *dest, const p_tag *src)
  {
    assert(src);
    assert(dest);
    *dest = *src;
    return dest;
  }
  

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