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lang: add highlighting to errors

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This commit is contained in:
Schrottkatze 2024-05-04 22:35:18 +02:00
parent 29cdcfbe0c
commit 4bcaf945d7
Signed by: schrottkatze
SSH key fingerprint: SHA256:hXb3t1vINBFCiDCmhRABHX5ocdbLiKyCdKI4HK2Rbbc
6 changed files with 128 additions and 15 deletions
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15
crates/lang/src/lst_parser/input.rs
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@ -1,5 +1,9 @@
use enumset::enum_set;
use crate::lst_parser::syntax_kind::SyntaxKind;
use super::syntax_kind::TokenSet;
pub struct Input<'src, 'toks> {
raw: &'toks Vec<(SyntaxKind, &'src str)>,
/// indices of the "meaningful" tokens (not whitespace etc)
@ -10,14 +14,19 @@ pub struct Input<'src, 'toks> {
newlines: Vec<usize>,
}
pub const MEANINGLESS_TOKS: TokenSet = enum_set!(SyntaxKind::WHITESPACE | SyntaxKind::NEWLINE);
impl<'src, 'toks> Input<'src, 'toks> {
pub fn new(raw_toks: &'toks Vec<(SyntaxKind, &'src str)>) -> Self {
let meaningful = raw_toks
.iter()
.enumerate()
.filter_map(|(i, tok)| match tok.0 {
SyntaxKind::WHITESPACE | SyntaxKind::NEWLINE => None,
_ => Some(i),
.filter_map(|(i, tok)| {
if MEANINGLESS_TOKS.contains(tok.0) {
None
} else {
Some(i)
}
})
.collect();
let newlines = raw_toks