moonbitlang / core / 4045

94%

push

github

refactor(builtin): share Int/Int64/Double until via a private helper

Extract the three near-identical loop bodies of `Int::until`,
`Int64::until`, and `Double::until` into a single private generic
`until_impl[T : Add + Compare + Default]` in `builtin/range.mbt`. The
three public functions become one-line delegates.

Public mbti is unchanged — no new traits, no new functions exported.
Semantics are byte-for-byte identical, including the existing
overflow handling for `(MAX_VALUE - 1).until(MAX_VALUE, inclusive=true)`
on `Int` and `Int64` (covered by `builtin/iter_test.mbt:421-438`).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

12 of 12 new or added lines in 2 files covered. (100.0%)

14766 of 15574 relevant lines covered (94.81%)

220329.57 hits per line