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feat: improve error message for broken tags

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Tobias Schmitz 2025-07-31 00:01:05 +02:00
parent d9356abb39
commit 55bc6abb60
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1 changed files with 18 additions and 8 deletions
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26
crates/typst-pdf/src/tags/mod.rs
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@ -273,25 +273,35 @@ pub(crate) fn handle_end(
// There are overlapping tags in the tag tree. Figure whether breaking
// up the current tag stack is semantically ok.
let is_pdf_ua = gc.options.standards.config.validator() == Validator::UA1;
let non_breakable = gc.tags.stack[idx + 1..]
.iter()
.find(|e| !e.kind.is_breakable(is_pdf_ua));
if let Some(entry) = non_breakable {
let mut is_breakable = true;
let mut non_breakable_span = Span::detached();
for e in gc.tags.stack[idx + 1..].iter() {
if e.kind.is_breakable(is_pdf_ua) {
continue;
}
is_breakable = false;
if !e.span.is_detached() {
non_breakable_span = e.span;
break;
}
}
if !is_breakable {
let validator = gc.options.standards.config.validator();
if is_pdf_ua {
let ua1 = validator.as_str();
bail!(
entry.span,
non_breakable_span,
"{ua1} error: invalid semantic structure, \
this element's tag would be split up";
hint: "maybe there is a `parbreak`, `colbreak`, or `pagebreak`"
hint: "maybe this is caused by a `parbreak`, `colbreak`, or `pagebreak`"
);
} else {
bail!(
entry.span,
non_breakable_span,
"invalid semantic structure, \
this element's tag would be split up";
hint: "maybe there is a `parbreak`, `colbreak`, or `pagebreak`";
hint: "maybe this is caused by a `parbreak`, `colbreak`, or `pagebreak`";
hint: "disable tagged pdf by passing `--disable-pdf-tags`"
);
}