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mruby-range-ext: implement __empty_range? in C

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2023-10-11 23:59:17 +09:00
parent deae227dff
commit 1321e33f08
2 changed files with 15 additions and 7 deletions
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mrbgems/mruby-range-ext/mrblib/range.rb
-7
View File
@@ -121,11 +121,4 @@ class Range
true
end
def __empty_range?(b, e, excl)
return false if b.nil? || e.nil?
comp = b <=> e
comp.nil? || comp > 0 || (comp == 0 && excl)
end
end
mrbgems/mruby-range-ext/src/range.c
+15
View File
@@ -189,6 +189,20 @@ range_size(mrb_state *mrb, mrb_value range)
}
#endif /* MRB_NO_FLOAT */
static mrb_value
range_empty_p(mrb_state *mrb, mrb_value range)
{
mrb_value b, e;
mrb_bool excl;
mrb_get_args(mrb, "oob", &b, &e, &excl);
if (mrb_nil_p(b) || mrb_nil_p(e))
return mrb_false_value();
mrb_int comp = mrb_cmp(mrb, b, e);
return mrb_bool_value(comp == -2 || comp > 0 || (comp == 0 && excl));
}
void
mrb_mruby_range_ext_gem_init(mrb_state* mrb)
{
@@ -196,6 +210,7 @@ mrb_mruby_range_ext_gem_init(mrb_state* mrb)
mrb_define_method(mrb, s, "cover?", range_cover, MRB_ARGS_REQ(1));
mrb_define_method(mrb, s, "size", range_size, MRB_ARGS_NONE());
mrb_define_method(mrb, s, "__empty_range?", range_empty_p, MRB_ARGS_REQ(3));
}
void