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Parse builders without backtracking from records

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This commit is contained in:
Agustin Zubiaga 2023-05-13 20:05:42 -03:00
parent c3bcb88c5b
commit f94004d137
5 changed files with 293 additions and 99 deletions
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40
crates/reporting/src/error/parse.rs
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@ -549,6 +549,46 @@ fn to_expr_report<'a>(
}
}
EExpr::OptionalValueInRecordBuilder(region) => {
let surroundings = Region::new(start, region.end());
let region = lines.convert_region(*region);
let doc = alloc.stack([
alloc.reflow(
r"I am partway through parsing a record builder, and I found an optional field:",
),
alloc.region_with_subregion(lines.convert_region(surroundings), region),
alloc.reflow("Optional fields can only appear when you destructure a record."),
]);
Report {
filename,
doc,
title: "BAD RECORD BUILDER".to_string(),
severity: Severity::RuntimeError,
}
}
EExpr::RecordUpdateBuilder(region) => {
let surroundings = Region::new(start, region.end());
let region = lines.convert_region(*region);
let doc = alloc.stack([
alloc.reflow(
r"I am partway through parsing a record update, and I found a record builder field:",
),
alloc.region_with_subregion(lines.convert_region(surroundings), region),
alloc.reflow("Record builders cannot be updated like records."),
]);
Report {
filename,
doc,
title: "BAD RECORD UPDATE".to_string(),
severity: Severity::RuntimeError,
}
}
EExpr::Space(error, pos) => to_space_report(alloc, lines, filename, error, *pos),
&EExpr::Number(ENumber::End, pos) => {