LibJS: Start implementing Intl.Segmenter

Userland/Libraries/LibJS/Runtime/Intl/Segmenter.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2022, Idan Horowitz <idan.horowitz@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/String.h>
+#include <LibJS/Runtime/Object.h>
+
+namespace JS::Intl {
+
+class Segmenter final : public Object {
+    JS_OBJECT(Segmenter, Object);
+
+public:
+    enum class SegmenterGranularity {
+        Grapheme,
+        Word,
+        Sentence,
+    };
+
+    explicit Segmenter(Object& prototype);
+    virtual ~Segmenter() override = default;
+
+    String const& locale() const { return m_locale; }
+    void set_locale(String locale) { m_locale = move(locale); }
+
+    SegmenterGranularity segmenter_granularity() const { return m_segmenter_granularity; }
+    void set_segmenter_granularity(StringView);
+    StringView segmenter_granularity_string() const;
+
+private:
+    String m_locale;                                                                 // [[Locale]]
+    SegmenterGranularity m_segmenter_granularity { SegmenterGranularity::Grapheme }; // [[SegmenterGranularity]]
+};
+
+}