diff options
Diffstat (limited to 'object.c')
-rw-r--r-- | object.c | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -1205,6 +1205,34 @@ sym_to_sym(sym) return sym; } +static VALUE +sym_call(args, mid) + VALUE args, mid; +{ + VALUE obj; + + if (RARRAY_LEN(args) < 1) { + rb_raise(rb_eArgError, "no receiver given"); + } + obj = rb_ary_shift(args); + return rb_apply(obj, (ID)mid, args); +} + +/* + * call-seq: + * sym.to_proc + * + * Returns a _Proc_ object which respond to the given method by _sym_. + * + * (1..3).collect(&:to_s) #=> ["1", "2", "3"] + */ + +static VALUE +sym_to_proc(VALUE sym) +{ + return rb_proc_new(sym_call, (VALUE)SYM2ID(sym)); +} + /*********************************************************************** * @@ -2749,6 +2777,7 @@ Init_Object() rb_define_method(rb_cSymbol, "to_s", sym_to_s, 0); rb_define_method(rb_cSymbol, "id2name", sym_to_s, 0); rb_define_method(rb_cSymbol, "to_sym", sym_to_sym, 0); + rb_define_method(rb_cSymbol, "to_proc", sym_to_proc, 0); rb_define_method(rb_cSymbol, "===", rb_obj_equal, 1); rb_define_method(rb_cModule, "freeze", rb_mod_freeze, 0); |