kc3-lang/kc3/libkc3/tag.h

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• Hash : fbfd58a3
  Author : Thomas de Grivel
  Date : 2024-09-16T14:42:49
  

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• libkc3/tag.h

• /* 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.
   */
  /**
   * @file tag.h
   * @brief Run-time type annotations.
   *
   * Structure to add a type tag to data.
   */
  #ifndef LIBKC3_TAG_H
  #define LIBKC3_TAG_H
  
  #include <stdarg.h>
  #include "tag_init.h"
  #include "tag_type.h"
  
  #define TAG_FIRST (&g_tag_first)
  #define TAG_LAST (&g_tag_last)
  
  extern s_tag g_tag_first;
  extern s_tag g_tag_last;
  
  /* Stack-allocation compatible functions, call tag_clean after use. */
  void    tag_clean (s_tag *tag);
  s_tag * tag_init (s_tag *tag);
  s_tag * tag_init_1 (s_tag *tag, const char *p);
  s_tag * tag_init_call_cast (s_tag *tag, const s_sym *type);
  s_tag * tag_init_facts_cast (s_tag *tag, const s_sym * const *type,
                               s_tag *src);
  
  /* Heap-allocation functions, call tag_delete after use. */
  void    tag_delete (s_tag *tag);
  s_tag * tag_new (void);
  s_tag * tag_new_1 (const char *p);
  
  /* Observers */
  s8             tag_arity (const s_tag *tag);
  u64 *          tag_hash_u64 (const s_tag *tag, u64 *dest);
  uw *           tag_hash_uw (const s_tag *tag, uw *dest);
  bool           tag_ident_is_bound (const s_tag *tag);
  bool           tag_is_alist (const s_tag *tag);
  bool           tag_is_bound_var (const s_tag *tag);
  bool           tag_is_cast (const s_tag *tag, const s_sym *type);
  bool           tag_is_number (const s_tag *tag);
  bool           tag_is_struct (const s_tag *tag, const s_sym *module);
  bool *         tag_is_unbound_var (const s_tag *tag, bool *dest);
  bool           tag_is_zero(const s_tag *tag);
  s8             tag_number_compare (const s_tag *a, const s_tag *b);
  const s_tag *  tag_resolve_cow (const s_tag *tag);
  uw *           tag_size (const s_tag *tag, uw *dest);
  ffi_type       tag_to_ffi_type(const s_tag *tag);
  const s_sym ** tag_type (const s_tag *tag, const s_sym **type);
  const s_sym ** tag_var_type (const s_tag *tag, const s_sym **type);
  
  /* Operators. */
  s_tag * tag_1 (s_tag *tag, const char *p);
  s_tag * tag_integer_cast_to_s16 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_s32 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_s64 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_s8 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_u16 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_u32 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_u64 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_cast_to_u8 (const s_tag *tag, s_tag *dest);
  s_tag * tag_integer_reduce (s_tag *tag);
  s_tag * tag_list_1 (s_tag *tag, const char *p);
  bool    tag_to_const_pointer (const s_tag *tag, const s_sym *type,
                                const void **dest);
  bool    tag_to_ffi_pointer (s_tag *tag, const s_sym *type, void **dest);
  bool    tag_to_pointer (s_tag *tag, const s_sym *type, void **dest);
  
  /* KC3 operators. */
  s_tag * tag_add (const s_tag *a, const s_tag *b, s_tag *dest);
  bool *  tag_and (const s_tag *a, const s_tag *b, bool *dest);
  s_tag * tag_assign (const s_tag *tag, const s_tag *value, s_tag *dest);
  s_tag * tag_band (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_bnot (const s_tag *tag, s_tag *dest);
  s_tag * tag_bor (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_brackets (const s_tag *tag, const s_tag *address,
                        s_tag *dest);
  s_tag * tag_bxor (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_cow (const s_tag *value, s_tag *dest);
  s_tag * tag_div (const s_tag *a, const s_tag *b, s_tag *dest);
  bool *  tag_lt (const s_tag *a, const s_tag *b, bool *dest);
  bool *  tag_lte (const s_tag *a, const s_tag *b, bool *dest);
  bool *  tag_gt (const s_tag *a, const s_tag *b, bool *dest);
  bool *  tag_gte (const s_tag *a, const s_tag *b, bool *dest);
  bool *  tag_eq (const s_tag *a, const s_tag *b, bool *dest);
  s_tag * tag_equal (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_mod (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_mul (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_neg (const s_tag *tag, s_tag *dest);
  bool *  tag_not (const s_tag *tag, bool *dest);
  bool *  tag_not_eq (const s_tag *a, const s_tag *b, bool *dest);
  bool *  tag_or (const s_tag *a, const s_tag *b, bool *dest);
  s_tag * tag_paren (const s_tag *tag, s_tag *dest);
  s_tag * tag_shift_left (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_shift_right (const s_tag *a, const s_tag *b, s_tag *dest);
  s_tag * tag_sqrt (const s_tag *tag, s_tag *dest);
  s_tag * tag_sub (const s_tag *a, const s_tag *b, s_tag *dest);
  
  #endif /* LIBKC3_TAG_H */
  

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