LibGUI+TextEditor+HackStudio: Add GML syntax highlighter :^)

Author: https://github.com/awesomekling Commit: ab549cf942
2025-04-26 14:28:49 +00:00 · 2020-12-21 13:59:21 +01:00 · 2020-12-21 13:59:21 +01:00 · ab549cf942 · 2024-07-19 00:41:27 +09:00
commit ab549cf942
parent 3d3084f088
8 changed files with 174 additions and 0 deletions
--- a/Libraries/LibGUI/GMLSyntaxHighlighter.cpp
+++ b/Libraries/LibGUI/GMLSyntaxHighlighter.cpp
@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibGUI/GMLLexer.h>
+#include <LibGUI/GMLSyntaxHighlighter.h>
+#include <LibGUI/TextEditor.h>
+#include <LibGfx/Font.h>
+#include <LibGfx/Palette.h>
+
+namespace GUI {
+
+static TextStyle style_for_token_type(Gfx::Palette palette, GMLToken::Type type)
+{
+    switch (type) {
+    case GMLToken::Type::LeftCurly:
+    case GMLToken::Type::RightCurly:
+        return { palette.syntax_punctuation() };
+    case GMLToken::Type::ClassMarker:
+        return { palette.syntax_keyword() };
+    case GMLToken::Type::ClassName:
+        return { palette.syntax_identifier(), &Gfx::Font::default_bold_fixed_width_font() };
+    case GMLToken::Type::Identifier:
+        return { palette.syntax_identifier() };
+    case GMLToken::Type::JsonValue:
+        return { palette.syntax_string() };
+    case GMLToken::Type::Comment:
+        return { palette.syntax_comment() };
+    default:
+        return { palette.base_text() };
+    }
+}
+
+bool GMLSyntaxHighlighter::is_identifier(void* token) const
+{
+    auto ini_token = static_cast<GUI::GMLToken::Type>(reinterpret_cast<size_t>(token));
+    return ini_token == GUI::GMLToken::Type::Identifier;
+}
+
+void GMLSyntaxHighlighter::rehighlight(Gfx::Palette palette)
+{
+    ASSERT(m_editor);
+    auto text = m_editor->text();
+    GMLLexer lexer(text);
+    auto tokens = lexer.lex();
+
+    Vector<GUI::TextDocumentSpan> spans;
+    for (auto& token : tokens) {
+        GUI::TextDocumentSpan span;
+        span.range.set_start({ token.m_start.line, token.m_start.column });
+        span.range.set_end({ token.m_end.line, token.m_end.column });
+        auto style = style_for_token_type(palette, token.m_type);
+        span.color = style.color;
+        span.font = style.font;
+        span.is_skippable = false;
+        span.data = reinterpret_cast<void*>(token.m_type);
+        spans.append(span);
+    }
+    m_editor->document().set_spans(spans);
+
+    m_has_brace_buddies = false;
+    highlight_matching_token_pair();
+
+    m_editor->update();
+}
+
+Vector<GMLSyntaxHighlighter::MatchingTokenPair> GMLSyntaxHighlighter::matching_token_pairs() const
+{
+    static Vector<SyntaxHighlighter::MatchingTokenPair> pairs;
+    if (pairs.is_empty()) {
+        pairs.append({ reinterpret_cast<void*>(GMLToken::Type::LeftCurly), reinterpret_cast<void*>(GMLToken::Type::RightCurly) });
+    }
+    return pairs;
+}
+
+bool GMLSyntaxHighlighter::token_types_equal(void* token1, void* token2) const
+{
+    return static_cast<GUI::GMLToken::Type>(reinterpret_cast<size_t>(token1)) == static_cast<GUI::GMLToken::Type>(reinterpret_cast<size_t>(token2));
+}
+
+GMLSyntaxHighlighter::~GMLSyntaxHighlighter()
+{
+}
+
+}