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is_letter now uses generated tables

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unicode.is_letter has been modified to use the generated unicode tables.
This commit is contained in:
StudebakerGuy
2026-03-08 11:40:05 -04:00
committed by Jeroen van Rijn
parent 69c04b696a
commit e9943e6145
1 changed files with 16 additions and 20 deletions
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36
core/unicode/letter.odin
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@@ -83,19 +83,22 @@ is_upper :: proc(r: rune) -> bool #no_bounds_check {
if r <= MAX_ASCII {
return u32(r)-'A' < 26
}
c := i32(r)
p := binary_search(c, to_lower_ranges[:], len(to_lower_ranges)/3, 3)
if p >= 0 && to_lower_ranges[p] <= c && c <= to_lower_ranges[p+1] {
return true
}
p = binary_search(c, to_lower_singlets[:], len(to_lower_singlets)/2, 2)
if p >= 0 && c == to_lower_singlets[p] {
return true
}
return false
return in_range(r, lu_ranges) || in_range(r, other_uppercase_ranges)
}
is_alpha :: is_letter
/*
Return true if the rune `r` is a letter. Being a letter means that the rune has
the Unicode general category property of L. In practice, the character will have
a general category property of Ll, Lm, Lo, Lt, or Lu.
Inputs:
- r: The rune which will be check for having the property of being a letter.
Returns:
`true` when the rune `r` is a letter. `false` will be returned in all other cases.
*/
@(require_results)
is_letter :: proc(r: rune) -> bool #no_bounds_check {
if u32(r) <= MAX_LATIN1 {
@@ -105,16 +108,9 @@ is_letter :: proc(r: rune) -> bool #no_bounds_check {
return true
}
c := i32(r)
p := binary_search(c, alpha_ranges[:], len(alpha_ranges)/2, 2)
if p >= 0 && alpha_ranges[p] <= c && c <= alpha_ranges[p+1] {
return true
}
p = binary_search(c, alpha_singlets[:], len(alpha_singlets), 1)
if p >= 0 && c == alpha_singlets[p] {
return true
}
return false
ll_lu := in_range(r, ll_ranges) || in_range(r, lu_ranges)
return ll_lu || in_range(r, lo_ranges) || in_range(r, lt_ranges) || in_range(r, lm_ranges)
}
@(require_results)