LibJS: Start implementing Intl Segment Iterator objects

Userland/Libraries/LibJS/Runtime/Intl/SegmentIterator.cpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022, Idan Horowitz <idan.horowitz@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/Intl/SegmentIterator.h>
+
+namespace JS::Intl {
+
+// 18.6.1 CreateSegmentIterator ( segmenter, string ), https://tc39.es/ecma402/#sec-createsegmentsobject
+SegmentIterator* SegmentIterator::create(GlobalObject& global_object, Segmenter& segmenter, String string)
+{
+    // 1. Let internalSlotsList be « [[IteratingSegmenter]], [[IteratedString]], [[IteratedStringNextSegmentCodeUnitIndex]] ».
+    // 2. Let iterator be ! OrdinaryObjectCreate(%SegmentIteratorPrototype%, internalSlotsList).
+    // 3. Set iterator.[[IteratingSegmenter]] to segmenter.
+    // 4. Set iterator.[[IteratedString]] to string.
+    // 5. Set iterator.[[IteratedStringNextSegmentCodeUnitIndex]] to 0.
+    // 6. Return iterator.
+    return global_object.heap().allocate<SegmentIterator>(global_object, global_object, segmenter, move(string));
+}
+
+// 18.6 Segment Iterator Objects, https://tc39.es/ecma402/#sec-segment-iterator-objects
+SegmentIterator::SegmentIterator(GlobalObject& global_object, Segmenter& segmenter, String string)
+    : Object(*global_object.intl_segment_iterator_prototype())
+    , m_iterating_segmenter(segmenter)
+    , m_iterated_string(move(string))
+{
+}
+
+void SegmentIterator::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(&m_iterating_segmenter);
+}
+
+}