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   1 /*
   2  * Copyright © 2016 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 #include "ao_scheme.h"
  16
  17 void
  18 ao_scheme_int_write(FILE *out, ao_poly p, bool write)
  19 {
  20         int i = ao_scheme_poly_int(p);
  21         (void) write;
  22         fprintf(out, "%d", i);
  23 }
  24
  25 ao_poly
  26 ao_scheme_do_integerp(struct ao_scheme_cons *cons)
  27 {
  28 #ifdef AO_SCHEME_FEATURE_BIGINT
  29         ao_poly val;
  30
  31         if (!ao_scheme_parse_args(_ao_scheme_atom_pair3f, cons,
  32                                   AO_SCHEME_POLY, &val,
  33                                   AO_SCHEME_ARG_END))
  34                 return AO_SCHEME_NIL;
  35         switch (ao_scheme_poly_type(val)) {
  36         case AO_SCHEME_INT:
  37         case AO_SCHEME_BIGINT:
  38                 return _ao_scheme_bool_true;
  39         default:
  40                 return _ao_scheme_bool_false;
  41         }
  42 #else
  43         return ao_scheme_do_typep(_ao_scheme_atom_integer3f, AO_SCHEME_INT, cons);
  44 #endif
  45 }
  46
  47 ao_poly
  48 ao_scheme_do_numberp(struct ao_scheme_cons *cons)
  49 {
  50 #if defined(AO_SCHEME_FEATURE_BIGINT) || defined(AO_SCHEME_FEATURE_FLOAT)
  51         ao_poly val;
  52
  53         if (!ao_scheme_parse_args(_ao_scheme_atom_pair3f, cons,
  54                                   AO_SCHEME_POLY, &val,
  55                                   AO_SCHEME_ARG_END))
  56                 return AO_SCHEME_NIL;
  57         switch (ao_scheme_poly_type(val)) {
  58         case AO_SCHEME_INT:
  59 #ifdef AO_SCHEME_FEATURE_BIGINT
  60         case AO_SCHEME_BIGINT:
  61 #endif
  62 #ifdef AO_SCHEME_FEATURE_FLOAT
  63         case AO_SCHEME_FLOAT:
  64 #endif
  65                 return _ao_scheme_bool_true;
  66         default:
  67                 return _ao_scheme_bool_false;
  68         }
  69 #else
  70         return ao_scheme_do_integerp(cons);
  71 #endif
  72 }
  73
  74 #ifdef AO_SCHEME_FEATURE_BIGINT
  75
  76 int32_t
  77 ao_scheme_poly_integer(ao_poly p)
  78 {
  79         switch (ao_scheme_poly_base_type(p)) {
  80         case AO_SCHEME_INT:
  81                 return ao_scheme_poly_int(p);
  82         case AO_SCHEME_BIGINT:
  83                 return ao_scheme_poly_bigint(p)->value;
  84         }
  85         return 0;
  86 }
  87
  88 ao_poly
  89 ao_scheme_integer_poly(int32_t p)
  90 {
  91         struct ao_scheme_bigint *bi;
  92
  93         if (AO_SCHEME_MIN_INT <= p && p <= AO_SCHEME_MAX_INT)
  94                 return ao_scheme_int_poly(p);
  95         bi = ao_scheme_alloc(sizeof (struct ao_scheme_bigint));
  96         bi->value = p;
  97         return ao_scheme_bigint_poly(bi);
  98 }
  99
 100 static void bigint_mark(void *addr)
 101 {
 102         (void) addr;
 103 }
 104
 105 static int bigint_size(void *addr)
 106 {
 107         if (!addr)
 108                 return 0;
 109         return sizeof (struct ao_scheme_bigint);
 110 }
 111
 112 static void bigint_move(void *addr)
 113 {
 114         (void) addr;
 115 }
 116
 117 const struct ao_scheme_type ao_scheme_bigint_type = {
 118         .mark = bigint_mark,
 119         .size = bigint_size,
 120         .move = bigint_move,
 121         .name = "bigint",
 122 };
 123
 124 void
 125 ao_scheme_bigint_write(FILE *out, ao_poly p, bool write)
 126 {
 127         struct ao_scheme_bigint *bi = ao_scheme_poly_bigint(p);
 128
 129         (void) write;
 130         fprintf(out, "%d", bi->value);
 131 }
 132 #endif /* AO_SCHEME_FEATURE_BIGINT */