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LibWeb: Add some folding regions to HTML syntax highlighter

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This adds the regions generated from embedded CSS and JS, and also for
HTML block comments.

The glaring omission is that we don't add them for start/end tags. HTML
allows start and end tags to not always match up, and I believe that's
going to require some variation on the adoption-agency algorithm to
make it work correctly.
This commit is contained in:
Sam Atkins 2023-03-03 14:40:58 +00:00 • committed by Andreas Kling
parent e239e1ccbc
commit c7736ef410
1 changed files with 10 additions and 0 deletions
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10
Userland/Libraries/LibWeb/HTML/SyntaxHighlighter/SyntaxHighlighter.cpp
View file

@ -41,6 +41,8 @@ void SyntaxHighlighter::rehighlight(Palette const& palette)
auto text = m_client->get_text();
clear_nested_token_pairs();
// FIXME: Add folding regions for start and end tags.
Vector<GUI::TextDocumentFoldingRegion> folding_regions;
Vector<GUI::TextDocumentSpan> spans;
auto highlight = [&](auto start_line, auto start_column, auto end_line, auto end_column, Gfx::TextAttributes attributes, AugmentedTokenKind kind) {
if (start_line > end_line || (start_line == end_line && start_column >= end_column)) {
@ -101,6 +103,7 @@ void SyntaxHighlighter::rehighlight(Palette const& palette)
}
spans.extend(proxy_client.corrected_spans());
folding_regions.extend(proxy_client.corrected_folding_regions());
substring_builder.clear();
} else if (state == State::CSS) {
Syntax::ProxyHighlighterClient proxy_client {
@ -118,6 +121,7 @@ void SyntaxHighlighter::rehighlight(Palette const& palette)
}
spans.extend(proxy_client.corrected_spans());
folding_regions.extend(proxy_client.corrected_folding_regions());
substring_builder.clear();
}
state = State::HTML;
@ -138,6 +142,11 @@ void SyntaxHighlighter::rehighlight(Palette const& palette)
token->end_position().column,
{ palette.syntax_comment(), {} },
AugmentedTokenKind::Comment);
GUI::TextDocumentFoldingRegion region;
region.range.set_start({ token->start_position().line, token->start_position().column + comment_prefix()->length() });
region.range.set_end({ token->end_position().line, token->end_position().column - comment_suffix()->length() });
folding_regions.append(move(region));
} else if (token->is_start_tag() || token->is_end_tag()) {
highlight(
token->start_position().line,
@ -183,6 +192,7 @@ void SyntaxHighlighter::rehighlight(Palette const& palette)
}
m_client->do_set_spans(move(spans));
m_client->do_set_folding_regions(move(folding_regions));
m_has_brace_buddies = false;
highlight_matching_token_pair();
m_client->do_update();