mirror of
https://github.com/RGBCube/serenity
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112 lines
3.9 KiB
C++
112 lines
3.9 KiB
C++
/*
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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 <LibCMake/Lexer.h>
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#include <LibCMake/Token.h>
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namespace CMake {
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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::BracketComment:
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case Token::Type::LineComment:
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return { palette.syntax_comment() };
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case Token::Type::Identifier:
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return { palette.syntax_function() };
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case Token::Type::ControlKeyword:
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return { palette.syntax_control_keyword() };
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case Token::Type::OpenParen:
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case Token::Type::CloseParen:
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return { palette.syntax_punctuation() };
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case Token::Type::BracketArgument:
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return { palette.syntax_parameter() };
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case Token::Type::QuotedArgument:
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return { palette.syntax_string() };
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case Token::Type::UnquotedArgument:
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return { palette.syntax_parameter() };
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case Token::Type::Garbage:
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return { palette.red() };
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case Token::Type::VariableReference:
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// This is a bit arbitrary, since we don't have a color specifically for this.
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return { palette.syntax_preprocessor_value() };
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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_type) const
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{
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auto cmake_token = static_cast<Token::Type>(token_type);
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return cmake_token == Token::Type::Identifier;
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}
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void SyntaxHighlighter::rehighlight(Gfx::Palette const& palette)
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{
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auto text = m_client->get_text();
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auto tokens = Lexer::lex(text).release_value_but_fixme_should_propagate_errors();
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Vector<GUI::TextDocumentSpan> spans;
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auto highlight_span = [&](Token::Type type, Position const& start, Position const& end) {
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GUI::TextDocumentSpan span;
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span.range.set_start({ start.line, start.column });
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span.range.set_end({ end.line, end.column });
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if (!span.range.is_valid())
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return;
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auto style = style_for_token_type(palette, type);
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span.attributes.color = style.color;
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span.attributes.bold = style.bold;
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if (type == Token::Type::Garbage) {
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span.attributes.underline = true;
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span.attributes.underline_color = palette.red();
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span.attributes.underline_style = Gfx::TextAttributes::UnderlineStyle::Wavy;
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}
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span.is_skippable = false;
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span.data = static_cast<u64>(type);
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spans.append(move(span));
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};
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for (auto const& token : tokens) {
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if (token.type == Token::Type::QuotedArgument || token.type == Token::Type::UnquotedArgument) {
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// Alternately highlight the regular/variable-reference parts.
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// 0-length ranges are caught in highlight_span() so we don't have to worry about them.
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Position previous_position = token.start;
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for (auto const& reference : token.variable_references) {
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highlight_span(token.type, previous_position, reference.start);
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highlight_span(Token::Type::VariableReference, reference.start, reference.end);
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previous_position = reference.end;
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}
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highlight_span(token.type, previous_position, token.end);
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continue;
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}
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highlight_span(token.type, token.start, token.end);
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}
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m_client->do_set_spans(move(spans));
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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::OpenParen), static_cast<u64>(Token::Type::CloseParen) });
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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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