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author | Takashi Kokubun <takashikkbn@gmail.com> | 2022-12-25 21:46:29 -0800 |
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committer | GitHub <noreply@github.com> | 2022-12-25 21:46:29 -0800 |
commit | 509da028c2249cd386190f2856e91549cc9e6c23 (patch) | |
tree | e85a575800cb14245f8acbb0ffe369b22761912c /vm_eval.c | |
parent | a236661a62dc89173dcdd9e071365929db1201a7 (diff) | |
download | ruby-509da028c2249cd386190f2856e91549cc9e6c23.tar.gz |
Rewrite Kernel#loop in Ruby (#6983)
* Rewrite Kernel#loop in Ruby
* Use enum_for(:loop) { Float::INFINITY }
Co-authored-by: Ufuk Kayserilioglu <ufuk@paralaus.com>
* Limit the scope to rescue StopIteration
Co-authored-by: Ufuk Kayserilioglu <ufuk@paralaus.com>
Diffstat (limited to 'vm_eval.c')
-rw-r--r-- | vm_eval.c | 60 |
1 files changed, 0 insertions, 60 deletions
@@ -1440,64 +1440,6 @@ rb_yield_block(RB_BLOCK_CALL_FUNC_ARGLIST(val, arg)) rb_keyword_given_p()); } -static VALUE -loop_i(VALUE _) -{ - for (;;) { - rb_yield_0(0, 0); - } - return Qnil; -} - -static VALUE -loop_stop(VALUE dummy, VALUE exc) -{ - return rb_attr_get(exc, id_result); -} - -static VALUE -rb_f_loop_size(VALUE self, VALUE args, VALUE eobj) -{ - return DBL2NUM(HUGE_VAL); -} - -/* - * call-seq: - * loop { block } - * loop -> an_enumerator - * - * Repeatedly executes the block. - * - * If no block is given, an enumerator is returned instead. - * - * loop do - * print "Input: " - * line = gets - * break if !line or line =~ /^q/i - * # ... - * end - * - * StopIteration raised in the block breaks the loop. In this case, - * loop returns the "result" value stored in the exception. - * - * enum = Enumerator.new { |y| - * y << "one" - * y << "two" - * :ok - * } - * - * result = loop { - * puts enum.next - * } #=> :ok - */ - -static VALUE -rb_f_loop(VALUE self) -{ - RETURN_SIZED_ENUMERATOR(self, 0, 0, rb_f_loop_size); - return rb_rescue2(loop_i, (VALUE)0, loop_stop, (VALUE)0, rb_eStopIteration, (VALUE)0); -} - #if VMDEBUG static const char * vm_frametype_name(const rb_control_frame_t *cfp); @@ -2580,8 +2522,6 @@ Init_vm_eval(void) rb_define_global_function("catch", rb_f_catch, -1); rb_define_global_function("throw", rb_f_throw, -1); - rb_define_global_function("loop", rb_f_loop, 0); - rb_define_method(rb_cBasicObject, "instance_eval", rb_obj_instance_eval_internal, -1); rb_define_method(rb_cBasicObject, "instance_exec", rb_obj_instance_exec_internal, -1); rb_define_private_method(rb_cBasicObject, "method_missing", rb_method_missing, -1); |