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Add look-ahead to custom syntax parser.

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This commit is contained in:
Stephen Chung
2020-12-15 19:23:30 +08:00
parent 17310ef576
commit f8c14ba1c4
4 changed files with 16 additions and 12 deletions
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16
src/parser.rs
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@@ -1831,15 +1831,17 @@ fn parse_custom_syntax(
tokens.push(key.into());
loop {
settings.pos = input.peek().unwrap().1;
let (fwd_token, fwd_pos) = input.peek().unwrap();
settings.pos = *fwd_pos;
let settings = settings.level_up();
let required_token =
if let Some(seg) = parse_func(&segments).map_err(|err| err.0.into_err(settings.pos))? {
seg
} else {
break;
};
let required_token = if let Some(seg) = parse_func(&segments, fwd_token.syntax().as_ref())
.map_err(|err| err.0.into_err(settings.pos))?
{
seg
} else {
break;
};
match required_token.as_str() {
MARKER_IDENT => match input.next().unwrap() {