LibGUI: Add a GitCommit SyntaxHighlighter implementation

This highlighter just syntax highlights the commented lines in your git
commit message. It could potentially be enhanced to handle the rebase
UI or other more advanced cases in the future.

1 files changed, 26 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h b/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h
new file mode 100644
index 0000000000..3e9cec60a7
--- /dev/null
+++ b/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2022, Brian Gianforcaro <bgianf@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibSyntax/Highlighter.h>
+
+namespace GUI {
+
+class GitCommitSyntaxHighlighter final : public Syntax::Highlighter {
+public:
+    GitCommitSyntaxHighlighter() { }
+    virtual ~GitCommitSyntaxHighlighter() override;
+
+    virtual Syntax::Language language() const override { return Syntax::Language::GitCommit; }
+    virtual void rehighlight(Palette const&) override;
+
+protected:
+    virtual Vector<MatchingTokenPair> matching_token_pairs_impl() const override;
+    virtual bool token_types_equal(u64, u64) const override;
+};
+
+}