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lib: drop non-Hare extras (ascii.digitval, bytes.copy, fmt.errpos)

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ascii.digitval/isidstart/isidpart are lexer-private, not Hare-stdlib.
Moved into lib/ww/lex/lex.ww as fn (renamed digitval to hexval since
its sole job is the \\xHH escape decoder).

bytes.copy and fmt.errpos have no Hare counterpart and no external
callers; gone.
This commit is contained in:
Hojun-Cho
2026-05-13 03:24:33 +09:00
parent f4743dc5d5
commit 9bc973dc96
8 changed files with 110 additions and 169 deletions
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27
lib/ascii/ascii.ww
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@@ -53,33 +53,6 @@ export fn isxdigit(c: rune) bool = {
return false;
};
// digitval — value of `c` as a hex/decimal digit. void variant means
// `c` isn't a hex digit. Useful when scanning numeric literals.
export fn digitval(c: rune) (i32 | void) = {
if (isdigit(c)) { return (c - 48): i32; };
if (c >= 65) {
if (c <= 70) { return ((c - 65) + 10): i32; };
};
if (c >= 97) {
if (c <= 102) { return ((c - 97) + 10): i32; };
};
return;
};
// isidstart / isidpart — identifier classes used by the lexer.
// Alpha or '_' starts; alnum or '_' continues.
export fn isidstart(c: rune) bool = {
if (isalpha(c)) { return true; };
if (c == 95) { return true; }; // '_'
return false;
};
export fn isidpart(c: rune) bool = {
if (isalnum(c)) { return true; };
if (c == 95) { return true; };
return false;
};
// tolower / toupper — fold ASCII case. Non-letters pass through.
export fn tolower(c: rune) rune = {
if (isupper(c)) { return c + 32; };