Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/HTML/SyntaxHighlighter/SyntaxHighlighter.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibSyntax/Highlighter.h>
+
+namespace Web::HTML {
+
+enum class AugmentedTokenKind : u32 {
+    AttributeName,
+    AttributeValue,
+    OpenTag,
+    CloseTag,
+    Comment,
+    Doctype,
+    __Count,
+};
+
+class SyntaxHighlighter : public Syntax::Highlighter {
+public:
+    SyntaxHighlighter() = default;
+    virtual ~SyntaxHighlighter() override = default;
+
+    virtual bool is_identifier(u64) const override;
+    virtual bool is_navigatable(u64) const override;
+
+    virtual Syntax::Language language() const override { return Syntax::Language::HTML; }
+    virtual Optional<StringView> comment_prefix() const override { return "<!--"sv; }
+    virtual Optional<StringView> comment_suffix() const override { return "-->"sv; }
+    virtual void rehighlight(Palette const&) override;
+
+    static constexpr u64 JS_TOKEN_START_VALUE = 1000;
+    static constexpr u64 CSS_TOKEN_START_VALUE = 2000;
+
+protected:
+    virtual Vector<MatchingTokenPair> matching_token_pairs_impl() const override;
+    virtual bool token_types_equal(u64, u64) const override;
+};
+
+}