diff options
Diffstat (limited to 'mrbgems/mruby-kernel-ext/src')
| -rw-r--r-- | mrbgems/mruby-kernel-ext/src/kernel.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/mrbgems/mruby-kernel-ext/src/kernel.c b/mrbgems/mruby-kernel-ext/src/kernel.c index a6ecd72bd..baccbd303 100644 --- a/mrbgems/mruby-kernel-ext/src/kernel.c +++ b/mrbgems/mruby-kernel-ext/src/kernel.c @@ -1,5 +1,7 @@ #include "mruby.h" #include "mruby/error.h" +#include "mruby/array.h" +#include "mruby/hash.h" /* * call-seq: @@ -21,6 +23,146 @@ mrb_f_method(mrb_state *mrb, mrb_value self) return mrb_nil_value(); } +/* + * call-seq: + * Integer(arg,base=0) -> integer + * + * Converts <i>arg</i> to a <code>Fixnum</code>. + * Numeric types are converted directly (with floating point numbers + * being truncated). <i>base</i> (0, or between 2 and 36) is a base for + * integer string representation. If <i>arg</i> is a <code>String</code>, + * when <i>base</i> is omitted or equals to zero, radix indicators + * (<code>0</code>, <code>0b</code>, and <code>0x</code>) are honored. + * In any case, strings should be strictly conformed to numeric + * representation. This behavior is different from that of + * <code>String#to_i</code>. Non string values will be converted using + * <code>to_int</code>, and <code>to_i</code>. Passing <code>nil</code> + * raises a TypeError. + * + * Integer(123.999) #=> 123 + * Integer("0x1a") #=> 26 + * Integer(Time.new) #=> 1204973019 + * Integer("0930", 10) #=> 930 + * Integer("111", 2) #=> 7 + * Integer(nil) #=> TypeError + */ +static mrb_value +mrb_f_integer(mrb_state *mrb, mrb_value self) +{ + mrb_value arg; + mrb_int base = 0; + + mrb_get_args(mrb, "o|i", &arg, &base); + return mrb_convert_to_integer(mrb, arg, base); +} + +/* + * call-seq: + * Float(arg) -> float + * + * Returns <i>arg</i> converted to a float. Numeric types are converted + * directly, the rest are converted using <i>arg</i>.to_f. + * + * Float(1) #=> 1.0 + * Float(123.456) #=> 123.456 + * Float("123.456") #=> 123.456 + * Float(nil) #=> TypeError + */ +static mrb_value +mrb_f_float(mrb_state *mrb, mrb_value self) +{ + mrb_value arg; + + mrb_get_args(mrb, "o", &arg); + return mrb_Float(mrb, arg); +} + +/* + * call-seq: + * String(arg) -> string + * + * Returns <i>arg</i> as an <code>String</code>. + * + * First tries to call its <code>to_str</code> method, then its to_s method. + * + * String(self) #=> "main" + * String(self.class) #=> "Object" + * String(123456) #=> "123456" + */ +static mrb_value +mrb_f_string(mrb_state *mrb, mrb_value self) +{ + mrb_value arg, tmp; + + mrb_get_args(mrb, "o", &arg); + tmp = mrb_check_convert_type(mrb, arg, MRB_TT_STRING, "String", "to_str"); + if (mrb_nil_p(tmp)) { + tmp = mrb_check_convert_type(mrb, arg, MRB_TT_STRING, "String", "to_s"); + } + return tmp; +} + +/* + * call-seq: + * Array(arg) -> array + * + * Returns +arg+ as an Array. + * + * First tries to call Array#to_ary on +arg+, then Array#to_a. + * + * Array(1..5) #=> [1, 2, 3, 4, 5] + * + */ +static mrb_value +mrb_f_array(mrb_state *mrb, mrb_value self) +{ + mrb_value arg, tmp; + + mrb_get_args(mrb, "o", &arg); + tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_ary"); + if (mrb_nil_p(tmp)) { + tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_a"); + } + if (mrb_nil_p(tmp)) { + return mrb_ary_new_from_values(mrb, 1, &arg); + } + + return tmp; +} + +/* + * call-seq: + * Hash(arg) -> hash + * + * Converts <i>arg</i> to a <code>Hash</code> by calling + * <i>arg</i><code>.to_hash</code>. Returns an empty <code>Hash</code> when + * <i>arg</i> is <tt>nil</tt> or <tt>[]</tt>. + * + * Hash([]) #=> {} + * Hash(nil) #=> {} + * Hash(key: :value) #=> {:key => :value} + * Hash([1, 2, 3]) #=> TypeError + */ +static mrb_value +mrb_f_hash(mrb_state *mrb, mrb_value self) +{ + mrb_value arg, tmp; + + mrb_get_args(mrb, "o", &arg); + if (mrb_nil_p(arg)) { + return mrb_hash_new(mrb); + } + tmp = mrb_check_convert_type(mrb, arg, MRB_TT_HASH, "Hash", "to_hash"); + if (mrb_nil_p(tmp)) { + if (mrb_array_p(arg) && RARRAY_LEN(arg) == 0) { + return mrb_hash_new(mrb); + } + mrb_raisef(mrb, E_TYPE_ERROR, "can't convert %S into Hash", + mrb_str_new_cstr(mrb, mrb_obj_classname(mrb, arg))); + } + return tmp; +} + void mrb_mruby_kernel_ext_gem_init(mrb_state *mrb) { @@ -28,6 +170,11 @@ mrb_mruby_kernel_ext_gem_init(mrb_state *mrb) mrb_define_module_function(mrb, krn, "fail", mrb_f_raise, MRB_ARGS_OPT(2)); mrb_define_method(mrb, krn, "__method__", mrb_f_method, MRB_ARGS_NONE()); + mrb_define_module_function(mrb, krn, "Integer", mrb_f_integer, MRB_ARGS_ANY()); + mrb_define_module_function(mrb, krn, "Float", mrb_f_float, MRB_ARGS_REQ(1)); + mrb_define_module_function(mrb, krn, "String", mrb_f_string, MRB_ARGS_REQ(1)); + mrb_define_module_function(mrb, krn, "Array", mrb_f_array, MRB_ARGS_REQ(1)); + mrb_define_module_function(mrb, krn, "Hash", mrb_f_hash, MRB_ARGS_REQ(1)); } void |