libguile/chars.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_CHARS_H
   4 #define SCM_CHARS_H
   5
   6 /* Copyright (C) 1995,1996,2000,2001,2004, 2006, 2008, 2009 Free Software Foundation, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  */
  23
  24 \f
  25
  26 #include "libguile/__scm.h"
  27
  28 \f
  29 /* Immediate Characters
  30  */
  31
  32 #ifndef SCM_WCHAR_DEFINED
  33 typedef scm_t_int32 scm_t_wchar;
  34 #define SCM_WCHAR_DEFINED
  35 #endif
  36
  37 #define SCM_CHARP(x) (SCM_ITAG8(x) == scm_tc8_char)
  38 #define SCM_CHAR(x) ((scm_t_wchar)SCM_ITAG8_DATA(x))
  39
  40 #define SCM_MAKE_CHAR(x) ({scm_t_int32 _x = (x);                        \
  41       _x < 0                                                            \
  42         ? SCM_MAKE_ITAG8((scm_t_bits)(unsigned char)_x, scm_tc8_char)   \
  43         : SCM_MAKE_ITAG8((scm_t_bits)_x, scm_tc8_char);})
  44
  45 #define SCM_CODEPOINT_MAX (0x10ffff)
  46 #define SCM_IS_UNICODE_CHAR(c)                                          \
  47   ((scm_t_wchar)(c)<=0xd7ff ||                                          \
  48    ((scm_t_wchar)(c)>=0xe000 && (scm_t_wchar)(c)<=SCM_CODEPOINT_MAX))
  49
  50 \f
  51
  52 SCM_API SCM scm_char_p (SCM x);
  53 SCM_API SCM scm_char_eq_p (SCM x, SCM y);
  54 SCM_API SCM scm_char_less_p (SCM x, SCM y);
  55 SCM_API SCM scm_char_leq_p (SCM x, SCM y);
  56 SCM_API SCM scm_char_gr_p (SCM x, SCM y);
  57 SCM_API SCM scm_char_geq_p (SCM x, SCM y);
  58 SCM_API SCM scm_char_ci_eq_p (SCM x, SCM y);
  59 SCM_API SCM scm_char_ci_less_p (SCM x, SCM y);
  60 SCM_API SCM scm_char_ci_leq_p (SCM x, SCM y);
  61 SCM_API SCM scm_char_ci_gr_p (SCM x, SCM y);
  62 SCM_API SCM scm_char_ci_geq_p (SCM x, SCM y);
  63 SCM_API SCM scm_char_alphabetic_p (SCM chr);
  64 SCM_API SCM scm_char_numeric_p (SCM chr);
  65 SCM_API SCM scm_char_whitespace_p (SCM chr);
  66 SCM_API SCM scm_char_upper_case_p (SCM chr);
  67 SCM_API SCM scm_char_lower_case_p (SCM chr);
  68 SCM_API SCM scm_char_is_both_p (SCM chr);
  69 SCM_API SCM scm_char_to_integer (SCM chr);
  70 SCM_API SCM scm_integer_to_char (SCM n);
  71 SCM_API SCM scm_char_upcase (SCM chr);
  72 SCM_API SCM scm_char_downcase (SCM chr);
  73 SCM_API scm_t_wchar scm_c_upcase (scm_t_wchar c);
  74 SCM_API scm_t_wchar scm_c_downcase (scm_t_wchar c);
  75 SCM_INTERNAL const char *scm_i_charname (SCM chr);
  76 SCM_INTERNAL SCM scm_i_charname_to_char (const char *charname,
  77                                          size_t charname_len);
  78 SCM_INTERNAL void scm_init_chars (void);
  79
  80 #endif  /* SCM_CHARS_H */
  81
  82 /*
  83   Local Variables:
  84   c-file-style: "gnu"
  85   End:
  86 */