Last change
on this file since 302 was 270, checked in by coas-nagasima, 7 years ago |
mruby版ECNLプロトタイピング・ツールを追加
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1 | /*
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2 | ** hash.c - Hash class
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3 | **
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4 | ** See Copyright Notice in mruby.h
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5 | */
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6 |
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7 | #include "mruby.h"
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8 | #include "mruby/array.h"
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9 | #include "mruby/hash.h"
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10 |
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11 | /*
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12 | * call-seq:
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13 | * hsh.values_at(key, ...) -> array
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14 | *
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15 | * Return an array containing the values associated with the given keys.
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16 | * Also see <code>Hash.select</code>.
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17 | *
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18 | * h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
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19 | * h.values_at("cow", "cat") #=> ["bovine", "feline"]
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20 | */
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21 |
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22 | static mrb_value
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23 | hash_values_at(mrb_state *mrb, mrb_value hash)
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24 | {
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25 | mrb_value *argv, result;
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26 | mrb_int argc, i;
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27 | int ai;
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28 |
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29 | mrb_get_args(mrb, "*", &argv, &argc);
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30 | result = mrb_ary_new_capa(mrb, argc);
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31 | ai = mrb_gc_arena_save(mrb);
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32 | for (i = 0; i < argc; i++) {
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33 | mrb_ary_push(mrb, result, mrb_hash_get(mrb, hash, argv[i]));
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34 | mrb_gc_arena_restore(mrb, ai);
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35 | }
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36 | return result;
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37 | }
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38 |
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39 | void
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40 | mrb_mruby_hash_ext_gem_init(mrb_state *mrb)
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41 | {
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42 | struct RClass *h;
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43 |
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44 | h = mrb->hash_class;
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45 | mrb_define_method(mrb, h, "values_at", hash_values_at, MRB_ARGS_ANY());
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46 | }
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47 |
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48 | void
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49 | mrb_mruby_hash_ext_gem_final(mrb_state *mrb)
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50 | {
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51 | }
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