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/*
* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "SyntaxHighlighter.h"
#include <LibCMake/Lexer.h>
#include <LibCMake/Token.h>
namespace CMake {
static Syntax::TextStyle style_for_token_type(Gfx::Palette const& palette, Token::Type type)
{
switch (type) {
case Token::Type::BracketComment:
case Token::Type::LineComment:
return { palette.syntax_comment() };
case Token::Type::Identifier:
return { palette.syntax_function() };
case Token::Type::ControlKeyword:
return { palette.syntax_control_keyword() };
case Token::Type::OpenParen:
case Token::Type::CloseParen:
return { palette.syntax_punctuation() };
case Token::Type::BracketArgument:
return { palette.syntax_parameter() };
case Token::Type::QuotedArgument:
return { palette.syntax_string() };
case Token::Type::UnquotedArgument:
return { palette.syntax_parameter() };
case Token::Type::Garbage:
return { palette.red() };
case Token::Type::VariableReference:
// This is a bit arbitrary, since we don't have a color specifically for this.
return { palette.syntax_preprocessor_value() };
default:
return { palette.base_text() };
}
}
bool SyntaxHighlighter::is_identifier(u64 token_type) const
{
auto cmake_token = static_cast<Token::Type>(token_type);
return cmake_token == Token::Type::Identifier;
}
void SyntaxHighlighter::rehighlight(Gfx::Palette const& palette)
{
auto text = m_client->get_text();
auto tokens = Lexer::lex(text).release_value_but_fixme_should_propagate_errors();
Vector<GUI::TextDocumentSpan> spans;
auto highlight_span = [&](Token::Type type, Position const& start, Position const& end) {
GUI::TextDocumentSpan span;
span.range.set_start({ start.line, start.column });
span.range.set_end({ end.line, end.column });
if (!span.range.is_valid())
return;
auto style = style_for_token_type(palette, type);
span.attributes.color = style.color;
span.attributes.bold = style.bold;
if (type == Token::Type::Garbage) {
span.attributes.underline = true;
span.attributes.underline_color = palette.red();
span.attributes.underline_style = Gfx::TextAttributes::UnderlineStyle::Wavy;
}
span.is_skippable = false;
span.data = static_cast<u64>(type);
spans.append(move(span));
};
for (auto const& token : tokens) {
if (token.type == Token::Type::QuotedArgument || token.type == Token::Type::UnquotedArgument) {
// Alternately highlight the regular/variable-reference parts.
// 0-length ranges are caught in highlight_span() so we don't have to worry about them.
Position previous_position = token.start;
for (auto const& reference : token.variable_references) {
highlight_span(token.type, previous_position, reference.start);
highlight_span(Token::Type::VariableReference, reference.start, reference.end);
previous_position = reference.end;
}
highlight_span(token.type, previous_position, token.end);
continue;
}
highlight_span(token.type, token.start, token.end);
}
m_client->do_set_spans(move(spans));
m_has_brace_buddies = false;
highlight_matching_token_pair();
m_client->do_update();
}
Vector<SyntaxHighlighter::MatchingTokenPair> SyntaxHighlighter::matching_token_pairs_impl() const
{
static Vector<MatchingTokenPair> pairs;
if (pairs.is_empty()) {
pairs.append({ static_cast<u64>(Token::Type::OpenParen), static_cast<u64>(Token::Type::CloseParen) });
}
return pairs;
}
bool SyntaxHighlighter::token_types_equal(u64 token1, u64 token2) const
{
return static_cast<Token::Type>(token1) == static_cast<Token::Type>(token2);
}
}
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