cac14a3f0a
Each {} block is now treated as a folding region, so that they can be
collapsed and expanded in TextEditor, GML Playground, HackStudio, and
anywhere else that uses the syntax highlighter. :^)
100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "SyntaxHighlighter.h"
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#include "Lexer.h"
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#include <LibGfx/Palette.h>
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namespace GUI::GML {
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static Syntax::TextStyle style_for_token_type(Gfx::Palette const& palette, Token::Type type)
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{
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switch (type) {
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case Token::Type::LeftCurly:
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case Token::Type::RightCurly:
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return { palette.syntax_punctuation() };
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case Token::Type::ClassMarker:
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return { palette.syntax_keyword() };
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case Token::Type::ClassName:
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return { palette.syntax_identifier(), true };
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case Token::Type::Identifier:
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return { palette.syntax_identifier() };
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case Token::Type::JsonValue:
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return { palette.syntax_string() };
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case Token::Type::Comment:
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return { palette.syntax_comment() };
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default:
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return { palette.base_text() };
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}
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}
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bool SyntaxHighlighter::is_identifier(u64 token) const
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{
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auto ini_token = static_cast<Token::Type>(token);
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return ini_token == Token::Type::Identifier;
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}
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void SyntaxHighlighter::rehighlight(Palette const& palette)
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{
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auto text = m_client->get_text();
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Lexer lexer(text);
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auto tokens = lexer.lex();
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Vector<Token> folding_region_start_tokens;
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Vector<GUI::TextDocumentSpan> spans;
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Vector<GUI::TextDocumentFoldingRegion> folding_regions;
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for (auto& token : tokens) {
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GUI::TextDocumentSpan span;
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span.range.set_start({ token.m_start.line, token.m_start.column });
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span.range.set_end({ token.m_end.line, token.m_end.column });
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auto style = style_for_token_type(palette, token.m_type);
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span.attributes.color = style.color;
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span.attributes.bold = style.bold;
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span.is_skippable = false;
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span.data = static_cast<u64>(token.m_type);
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spans.append(span);
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// Create folding regions for {} blocks
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if (token.m_type == Token::Type::LeftCurly) {
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folding_region_start_tokens.append(token);
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} else if (token.m_type == Token::Type::RightCurly) {
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if (!folding_region_start_tokens.is_empty()) {
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auto left_curly = folding_region_start_tokens.take_last();
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GUI::TextDocumentFoldingRegion region;
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region.range.set_start({ left_curly.m_end.line, left_curly.m_end.column });
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region.range.set_end({ token.m_start.line, token.m_start.column });
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folding_regions.append(region);
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}
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}
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}
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m_client->do_set_spans(move(spans));
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m_client->do_set_folding_regions(move(folding_regions));
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m_has_brace_buddies = false;
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highlight_matching_token_pair();
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m_client->do_update();
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}
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Vector<SyntaxHighlighter::MatchingTokenPair> SyntaxHighlighter::matching_token_pairs_impl() const
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{
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static Vector<MatchingTokenPair> pairs;
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if (pairs.is_empty()) {
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pairs.append({ static_cast<u64>(Token::Type::LeftCurly), static_cast<u64>(Token::Type::RightCurly) });
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}
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return pairs;
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}
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bool SyntaxHighlighter::token_types_equal(u64 token1, u64 token2) const
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{
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return static_cast<Token::Type>(token1) == static_cast<Token::Type>(token2);
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}
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}
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