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