[331] | 1 | #include <mruby.h>
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| 2 | #include <mruby/error.h>
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| 3 | #include <mruby/array.h>
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| 4 | #include <mruby/hash.h>
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| 5 | #include <mruby/range.h>
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[270] | 6 |
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[331] | 7 | static mrb_value
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| 8 | mrb_f_caller(mrb_state *mrb, mrb_value self)
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| 9 | {
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| 10 | mrb_value bt, v, length;
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| 11 | mrb_int bt_len, argc, lev, n;
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| 12 |
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| 13 | bt = mrb_get_backtrace(mrb);
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| 14 | bt_len = RARRAY_LEN(bt);
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| 15 | argc = mrb_get_args(mrb, "|oo", &v, &length);
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| 16 |
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| 17 | switch (argc) {
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| 18 | case 0:
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| 19 | lev = 1;
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| 20 | n = bt_len - lev;
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| 21 | break;
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| 22 | case 1:
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| 23 | if (mrb_type(v) == MRB_TT_RANGE) {
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| 24 | mrb_int beg, len;
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| 25 | if (mrb_range_beg_len(mrb, v, &beg, &len, bt_len, TRUE) == 1) {
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| 26 | lev = beg;
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| 27 | n = len;
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| 28 | }
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| 29 | else {
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| 30 | return mrb_nil_value();
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| 31 | }
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| 32 | }
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| 33 | else {
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| 34 | v = mrb_to_int(mrb, v);
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| 35 | lev = mrb_fixnum(v);
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| 36 | if (lev < 0) {
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| 37 | mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative level (%S)", v);
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| 38 | }
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| 39 | n = bt_len - lev;
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| 40 | }
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| 41 | break;
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| 42 | case 2:
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| 43 | lev = mrb_fixnum(mrb_to_int(mrb, v));
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| 44 | n = mrb_fixnum(mrb_to_int(mrb, length));
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| 45 | if (lev < 0) {
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| 46 | mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative level (%S)", v);
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| 47 | }
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| 48 | if (n < 0) {
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| 49 | mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative size (%S)", length);
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| 50 | }
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| 51 | break;
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| 52 | default:
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| 53 | lev = n = 0;
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| 54 | break;
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| 55 | }
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| 56 |
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| 57 | if (n == 0) {
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| 58 | return mrb_ary_new(mrb);
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| 59 | }
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| 60 |
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| 61 | return mrb_funcall(mrb, bt, "[]", 2, mrb_fixnum_value(lev), mrb_fixnum_value(n));
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| 62 | }
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| 63 |
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[270] | 64 | /*
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| 65 | * call-seq:
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| 66 | * __method__ -> symbol
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| 67 | *
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| 68 | * Returns the name at the definition of the current method as a
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| 69 | * Symbol.
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| 70 | * If called outside of a method, it returns <code>nil</code>.
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| 71 | *
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| 72 | */
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| 73 | static mrb_value
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| 74 | mrb_f_method(mrb_state *mrb, mrb_value self)
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| 75 | {
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| 76 | mrb_callinfo *ci = mrb->c->ci;
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| 77 | ci--;
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| 78 | if (ci->mid)
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| 79 | return mrb_symbol_value(ci->mid);
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| 80 | else
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| 81 | return mrb_nil_value();
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| 82 | }
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| 83 |
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| 84 | /*
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| 85 | * call-seq:
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| 86 | * Integer(arg,base=0) -> integer
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| 87 | *
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| 88 | * Converts <i>arg</i> to a <code>Fixnum</code>.
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| 89 | * Numeric types are converted directly (with floating point numbers
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| 90 | * being truncated). <i>base</i> (0, or between 2 and 36) is a base for
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| 91 | * integer string representation. If <i>arg</i> is a <code>String</code>,
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| 92 | * when <i>base</i> is omitted or equals to zero, radix indicators
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| 93 | * (<code>0</code>, <code>0b</code>, and <code>0x</code>) are honored.
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| 94 | * In any case, strings should be strictly conformed to numeric
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| 95 | * representation. This behavior is different from that of
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| 96 | * <code>String#to_i</code>. Non string values will be converted using
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| 97 | * <code>to_int</code>, and <code>to_i</code>. Passing <code>nil</code>
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| 98 | * raises a TypeError.
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| 99 | *
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| 100 | * Integer(123.999) #=> 123
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| 101 | * Integer("0x1a") #=> 26
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| 102 | * Integer(Time.new) #=> 1204973019
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| 103 | * Integer("0930", 10) #=> 930
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| 104 | * Integer("111", 2) #=> 7
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| 105 | * Integer(nil) #=> TypeError
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| 106 | */
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| 107 | static mrb_value
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| 108 | mrb_f_integer(mrb_state *mrb, mrb_value self)
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| 109 | {
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| 110 | mrb_value arg;
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| 111 | mrb_int base = 0;
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| 112 |
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| 113 | mrb_get_args(mrb, "o|i", &arg, &base);
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| 114 | return mrb_convert_to_integer(mrb, arg, base);
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| 115 | }
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| 116 |
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| 117 | /*
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| 118 | * call-seq:
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| 119 | * Float(arg) -> float
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| 120 | *
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| 121 | * Returns <i>arg</i> converted to a float. Numeric types are converted
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[331] | 122 | * directly, the rest are converted using <i>arg</i>.to_f.
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[270] | 123 | *
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| 124 | * Float(1) #=> 1.0
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| 125 | * Float(123.456) #=> 123.456
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| 126 | * Float("123.456") #=> 123.456
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| 127 | * Float(nil) #=> TypeError
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| 128 | */
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| 129 | static mrb_value
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| 130 | mrb_f_float(mrb_state *mrb, mrb_value self)
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| 131 | {
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| 132 | mrb_value arg;
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| 133 |
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| 134 | mrb_get_args(mrb, "o", &arg);
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| 135 | return mrb_Float(mrb, arg);
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| 136 | }
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| 137 |
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| 138 | /*
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| 139 | * call-seq:
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| 140 | * String(arg) -> string
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| 141 | *
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| 142 | * Returns <i>arg</i> as an <code>String</code>.
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| 143 | *
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| 144 | * First tries to call its <code>to_str</code> method, then its to_s method.
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| 145 | *
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| 146 | * String(self) #=> "main"
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| 147 | * String(self.class) #=> "Object"
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| 148 | * String(123456) #=> "123456"
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| 149 | */
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| 150 | static mrb_value
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| 151 | mrb_f_string(mrb_state *mrb, mrb_value self)
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| 152 | {
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| 153 | mrb_value arg, tmp;
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| 154 |
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| 155 | mrb_get_args(mrb, "o", &arg);
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| 156 | tmp = mrb_check_convert_type(mrb, arg, MRB_TT_STRING, "String", "to_str");
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| 157 | if (mrb_nil_p(tmp)) {
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| 158 | tmp = mrb_check_convert_type(mrb, arg, MRB_TT_STRING, "String", "to_s");
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| 159 | }
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| 160 | return tmp;
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| 161 | }
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| 162 |
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| 163 | /*
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| 164 | * call-seq:
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| 165 | * Array(arg) -> array
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| 166 | *
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| 167 | * Returns +arg+ as an Array.
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| 168 | *
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| 169 | * First tries to call Array#to_ary on +arg+, then Array#to_a.
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| 170 | *
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| 171 | * Array(1..5) #=> [1, 2, 3, 4, 5]
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| 172 | *
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| 173 | */
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| 174 | static mrb_value
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| 175 | mrb_f_array(mrb_state *mrb, mrb_value self)
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| 176 | {
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| 177 | mrb_value arg, tmp;
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| 178 |
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| 179 | mrb_get_args(mrb, "o", &arg);
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| 180 | tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_ary");
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| 181 | if (mrb_nil_p(tmp)) {
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| 182 | tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_a");
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| 183 | }
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| 184 | if (mrb_nil_p(tmp)) {
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| 185 | return mrb_ary_new_from_values(mrb, 1, &arg);
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| 186 | }
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| 187 |
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| 188 | return tmp;
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| 189 | }
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| 190 |
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| 191 | /*
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| 192 | * call-seq:
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| 193 | * Hash(arg) -> hash
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| 194 | *
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| 195 | * Converts <i>arg</i> to a <code>Hash</code> by calling
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| 196 | * <i>arg</i><code>.to_hash</code>. Returns an empty <code>Hash</code> when
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| 197 | * <i>arg</i> is <tt>nil</tt> or <tt>[]</tt>.
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| 198 | *
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| 199 | * Hash([]) #=> {}
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| 200 | * Hash(nil) #=> {}
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| 201 | * Hash(key: :value) #=> {:key => :value}
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| 202 | * Hash([1, 2, 3]) #=> TypeError
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| 203 | *
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| 204 | */
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| 205 | static mrb_value
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| 206 | mrb_f_hash(mrb_state *mrb, mrb_value self)
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| 207 | {
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| 208 | mrb_value arg, tmp;
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| 209 |
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| 210 | mrb_get_args(mrb, "o", &arg);
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| 211 | if (mrb_nil_p(arg)) {
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| 212 | return mrb_hash_new(mrb);
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| 213 | }
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| 214 | tmp = mrb_check_convert_type(mrb, arg, MRB_TT_HASH, "Hash", "to_hash");
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| 215 | if (mrb_nil_p(tmp)) {
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| 216 | if (mrb_array_p(arg) && RARRAY_LEN(arg) == 0) {
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| 217 | return mrb_hash_new(mrb);
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| 218 | }
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| 219 | mrb_raisef(mrb, E_TYPE_ERROR, "can't convert %S into Hash",
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| 220 | mrb_str_new_cstr(mrb, mrb_obj_classname(mrb, arg)));
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| 221 | }
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| 222 | return tmp;
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| 223 | }
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| 224 |
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| 225 | void
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| 226 | mrb_mruby_kernel_ext_gem_init(mrb_state *mrb)
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| 227 | {
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| 228 | struct RClass *krn = mrb->kernel_module;
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| 229 |
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| 230 | mrb_define_module_function(mrb, krn, "fail", mrb_f_raise, MRB_ARGS_OPT(2));
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[331] | 231 | mrb_define_module_function(mrb, krn, "caller", mrb_f_caller, MRB_ARGS_OPT(2));
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[270] | 232 | mrb_define_method(mrb, krn, "__method__", mrb_f_method, MRB_ARGS_NONE());
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| 233 | mrb_define_module_function(mrb, krn, "Integer", mrb_f_integer, MRB_ARGS_ANY());
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| 234 | mrb_define_module_function(mrb, krn, "Float", mrb_f_float, MRB_ARGS_REQ(1));
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| 235 | mrb_define_module_function(mrb, krn, "String", mrb_f_string, MRB_ARGS_REQ(1));
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| 236 | mrb_define_module_function(mrb, krn, "Array", mrb_f_array, MRB_ARGS_REQ(1));
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| 237 | mrb_define_module_function(mrb, krn, "Hash", mrb_f_hash, MRB_ARGS_REQ(1));
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| 238 | }
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| 239 |
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| 240 | void
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| 241 | mrb_mruby_kernel_ext_gem_final(mrb_state *mrb)
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| 242 | {
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| 243 | }
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