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test top level expr parsing

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🪞👃🪞 2025-01-18 22:17:10 +01:00
parent d14d67172c
commit 9756862091
7 changed files with 129 additions and 82 deletions
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32
edn/src/iter.rs
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@ -20,48 +20,44 @@ pub const fn peek_src <'a> (source: &'a str) -> Option<Token<'a>> {
Err(_) => return Some(token),
Nil => match c {
' '|'\n'|'\r'|'\t' => token.grow(),
'(' => Token {
source, start, length: 1,
'(' => Token { source, start, length: 1,
value: Value::Exp(1, TokenIter(str_range(source, start, start + 1))),
},
'0'..='9' => Token {
source, start, length: 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) {
Ok(c) => Value::Num(c),
Result::Err(e) => Value::Err(e)
}
},
':'|'@' => 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)),
},
_ => token.error(Unexpected(c))
},
Num(_) => match c {
'0'..='9' => token.grow(),
Num(n) => match c {
'0'..='9' => token.grow_num(n, c),
' '|'\n'|'\r'|'\t' => return Some(token),
_ => token.error(Unexpected(c))
},
Sym(_) => match c {
'a'..='z'|'0'..='9'|'-' => token.grow(),
'a'..='z'|'0'..='9'|'-' => token.grow_sym(),
' '|'\n'|'\r'|'\t' => return Some(token),
_ => token.error(Unexpected(c))
},
Key(_) => match c {
'a'..='z'|'0'..='9'|'-'|'/' => token.grow(),
'a'..='z'|'0'..='9'|'-'|'/' => token.grow_key(),
' '|'\n'|'\r'|'\t' => return Some(token),
_ => token.error(Unexpected(c))
},
Exp(depth, _) => match depth {
0 => return Some(token),
0 => return Some(token.grow_exp()),
_ => match c {
')' => token.grow_out(),
'(' => token.grow_in(),
_ => token.grow(),
_ => token.grow_exp(),
}
},
});