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make ) a closer from num/sym/key, and we run again! borkenly

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🪞👃🪞 2025-01-19 00:02:22 +01:00
parent a595e2e895
commit 323afe4c89
2 changed files with 17 additions and 20 deletions
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33
edn/src/iter.rs
View file

@ -15,41 +15,38 @@ impl<'a> TokenIter<'a> {
}
}
pub const fn peek_src <'a> (source: &'a str) -> Option<Token<'a>> {
let mut token: Token<'a> = Token::new(source, Nil, 0, 0);
let mut token: Token<'a> = Token::new(source, 0, 0, Nil);
iterate!(char_indices(source) => (start, c) => token = match token.value() {
Err(_) => return Some(token),
Nil => match c {
' '|'\n'|'\r'|'\t' => token.grow(),
'(' => Token { source, start, length: 1,
value: Value::Exp(1, TokenIter(str_range(source, start, start + 1))),
},
':'|'@' => Token { source, start, length: 1,
value: Value::Sym(str_range(source, start, start + 1)),
},
'/'|'a'..='z' => Token { source, start, length: 1,
value: Value::Key(str_range(source, start, start + 1)),
},
'0'..='9' => Token { source, start, length: 1,
value: match to_digit(c) {
' '|'\n'|'\r'|'\t' =>
token.grow(),
'(' =>
Token::new(source, start, 1, Exp(1, TokenIter(str_range(source, start, start + 1)))),
':'|'@' =>
Token::new(source, start, 1, Sym(str_range(source, start, start + 1))),
'/'|'a'..='z' =>
Token::new(source, start, 1, Key(str_range(source, start, start + 1))),
'0'..='9' =>
Token::new(source, start, 1, match to_digit(c) {
Ok(c) => Value::Num(c),
Result::Err(e) => Value::Err(e)
}
},
}),
_ => token.error(Unexpected(c))
},
Num(n) => match c {
'0'..='9' => token.grow_num(n, c),
' '|'\n'|'\r'|'\t' => return Some(token),
' '|'\n'|'\r'|'\t'|')' => return Some(token),
_ => token.error(Unexpected(c))
},
Sym(_) => match c {
'a'..='z'|'0'..='9'|'-' => token.grow_sym(),
' '|'\n'|'\r'|'\t' => return Some(token),
' '|'\n'|'\r'|'\t'|')' => return Some(token),
_ => token.error(Unexpected(c))
},
Key(_) => match c {
'a'..='z'|'0'..='9'|'-'|'/' => token.grow_key(),
' '|'\n'|'\r'|'\t' => return Some(token),
' '|'\n'|'\r'|'\t'|')' => return Some(token),
_ => token.error(Unexpected(c))
},
Exp(depth, _) => match depth {

4
edn/src/token.rs
View file

@ -15,8 +15,8 @@ use self::Value::*;
Exp(usize, TokenIter<'a>),
}
impl<'a> Token<'a> {
pub const fn new (source: &'a str, value: Value<'a>, start: usize, length: usize) -> Self {
Self { source, value, start, length }
pub const fn new (source: &'a str, start: usize, length: usize, value: Value<'a>) -> Self {
Self { source, start, length, value }
}
pub const fn end (&self) -> usize {
self.start + self.length