diff options
Diffstat (limited to 'mrbgems/mruby-kernel-ext/src/kernel.c')
| -rw-r--r-- | mrbgems/mruby-kernel-ext/src/kernel.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/mrbgems/mruby-kernel-ext/src/kernel.c b/mrbgems/mruby-kernel-ext/src/kernel.c new file mode 100644 index 000000000..15b4c5f72 --- /dev/null +++ b/mrbgems/mruby-kernel-ext/src/kernel.c @@ -0,0 +1,228 @@ +#include <mruby.h> +#include <mruby/error.h> +#include <mruby/array.h> +#include <mruby/hash.h> +#include <mruby/range.h> +#include <mruby/presym.h> + +static mrb_value +mrb_f_caller(mrb_state *mrb, mrb_value self) +{ + mrb_value bt, v; + mrb_int bt_len, argc, lev, n; + + argc = mrb_get_args(mrb, "|oi", &v, &n); + + bt = mrb_get_backtrace(mrb); + bt_len = RARRAY_LEN(bt); + + switch (argc) { + case 0: + lev = 1; + n = bt_len - 1; + break; + case 1: + if (mrb_range_p(v)) { + mrb_int beg, len; + if (mrb_range_beg_len(mrb, v, &beg, &len, bt_len, TRUE) == MRB_RANGE_OK) { + lev = beg; + n = len; + } + else { + return mrb_nil_value(); + } + } + else { + lev = mrb_as_int(mrb, v); + if (lev < 0) { + mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative level (%v)", v); + } + n = bt_len - lev; + } + break; + case 2: + lev = mrb_as_int(mrb, v); + break; + default: + /* not reached */ + lev = n = 0; + break; + } + if (lev >= bt_len) return mrb_nil_value(); + if (lev < 0) { + mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative level (%v)", v); + } + if (n < 0) { + mrb_raisef(mrb, E_ARGUMENT_ERROR, "negative size (%d)", n); + } + if (n == 0 || bt_len <= lev) { + return mrb_ary_new(mrb); + } + if (bt_len <= n + lev) n = bt_len - lev - 1; + return mrb_ary_new_from_values(mrb, n, RARRAY_PTR(bt)+lev+1); +} + +/* + * call-seq: + * __method__ -> symbol + * + * Returns the name at the definition of the current method as a + * Symbol. + * If called outside of a method, it returns <code>nil</code>. + * + */ +static mrb_value +mrb_f_method(mrb_state *mrb, mrb_value self) +{ + mrb_callinfo *ci = mrb->c->ci; + ci--; + if (ci->mid) + return mrb_symbol_value(ci->mid); + else + return mrb_nil_value(); +} + +/* + * call-seq: + * Integer(arg,base=0) -> integer + * + * Converts <i>arg</i> to a <code>Integer</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 treated as integers. + * 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); +} + +#ifndef MRB_NO_FLOAT +/* + * 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_arg1(mrb); + + return mrb_to_float(mrb, arg); +} +#endif + +/* + * call-seq: + * String(arg) -> string + * + * Returns <i>arg</i> as an <code>String</code>. + * converted using <code>to_s</code> 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 = mrb_get_arg1(mrb); + mrb_value tmp; + + tmp = mrb_type_convert(mrb, arg, MRB_TT_STRING, MRB_SYM(to_s)); + return tmp; +} + +/* + * call-seq: + * Array(arg) -> array + * + * Returns +arg+ as an Array using to_a method. + * + * Array(1..5) #=> [1, 2, 3, 4, 5] + * + */ +static mrb_value +mrb_f_array(mrb_state *mrb, mrb_value self) +{ + mrb_value arg = mrb_get_arg1(mrb); + mrb_value tmp; + + tmp = mrb_type_convert_check(mrb, arg, MRB_TT_ARRAY, MRB_SYM(to_a)); + if (mrb_nil_p(tmp)) { + return mrb_ary_new_from_values(mrb, 1, &arg); + } + + return tmp; +} + +/* + * call-seq: + * Hash(arg) -> hash + * + * Returns a <code>Hash</code> if <i>arg</i> is a <code>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 = mrb_get_arg1(mrb); + + if (mrb_nil_p(arg) || (mrb_array_p(arg) && RARRAY_LEN(arg) == 0)) { + return mrb_hash_new(mrb); + } + return mrb_ensure_hash_type(mrb, arg); +} + +void +mrb_mruby_kernel_ext_gem_init(mrb_state *mrb) +{ + struct RClass *krn = mrb->kernel_module; + + mrb_define_module_function(mrb, krn, "fail", mrb_f_raise, MRB_ARGS_OPT(2)); + mrb_define_module_function(mrb, krn, "caller", mrb_f_caller, 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_ARG(1,1)); +#ifndef MRB_NO_FLOAT + mrb_define_module_function(mrb, krn, "Float", mrb_f_float, MRB_ARGS_REQ(1)); +#endif + 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 +mrb_mruby_kernel_ext_gem_final(mrb_state *mrb) +{ +} |