ladybird/Userland/Applications/Spreadsheet/CellSyntaxHighlighter.cpp
Andreas Kling 87ac906ee6 LibJS: Make Error stack traces lazier
Instead of eagerly populating the stack trace with a textual
representation of every call frame, just store the raw source code range
(code, start offset, end offset). From that, we can generate the full
rich backtrace when requested, and save ourselves the trouble otherwise.

This makes test-wasm take ~7 seconds on my machine instead of ~60. :^)
2023-05-28 10:03:11 +02:00

60 lines
1.7 KiB
C++

/*
* Copyright (c) 2020-2022, the SerenityOS developers.
* Copyright (c) 2023, Matteo benetti <matteo.benetti@proton.me>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CellSyntaxHighlighter.h"
#include <LibGUI/TextEditor.h>
#include <LibGfx/Palette.h>
#include <LibJS/Lexer.h>
namespace Spreadsheet {
void CellSyntaxHighlighter::rehighlight(Palette const& palette)
{
m_client->clear_spans();
if (m_client->get_text().starts_with('=')) {
JS::SyntaxHighlighter::rehighlight(palette);
auto spans = m_client->spans();
// Highlight the '='
spans.empend(
GUI::TextRange { { 0, 0 }, { 0, 1 } },
Gfx::TextAttributes {
palette.syntax_keyword(),
Optional<Color> {},
false,
},
(u64)-1,
false);
if (m_cell && m_cell->thrown_value().has_value()) {
if (auto value = m_cell->thrown_value().value(); value.is_object() && is<JS::Error>(value.as_object())) {
auto& error = static_cast<JS::Error const&>(value.as_object());
auto& range = error.traceback().first().source_range();
spans.prepend({
GUI::TextRange { { range.start.line - 1, range.start.column }, { range.end.line - 1, range.end.column } },
Gfx::TextAttributes {
Color::Black,
Color::Red,
false,
},
(u64)-1,
false,
});
}
}
m_client->do_set_spans(move(spans));
}
m_client->do_update();
}
}