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Kha/Tools/linux_arm64/std/haxe/ds/ReadOnlyArray.hx

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+/*
+ * Copyright (C)2005-2019 Haxe Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+package haxe.ds;
+
+/**
+	`ReadOnlyArray` is an abstract over an ordinary `Array` which only exposes
+	APIs that don't modify the instance, hence "read-only".
+
+	Note that this doesn't necessarily mean that the instance is *immutable*.
+	Other code holding a reference to the underlying `Array` can still modify it,
+	and the reference can be obtained with a `cast`.
+**/
+@:forward(copy, filter, indexOf, iterator, keyValueIterator, join, lastIndexOf, map, slice, contains, toString)
+abstract ReadOnlyArray<T>(Array<T>) from Array<T> to Iterable<T> {
+	/**
+		The length of `this` Array.
+	**/
+	public var length(get, never):Int;
+
+	inline function get_length()
+		return this.length;
+
+	@:arrayAccess inline function get(i:Int)
+		return this[i];
+
+	/**
+		Returns a new Array by appending the elements of `a` to the elements of
+		`this` Array.
+
+		This operation does not modify `this` Array.
+
+		If `a` is the empty Array `[]`, a copy of `this` Array is returned.
+
+		The length of the returned Array is equal to the sum of `this.length`
+		and `a.length`.
+
+		If `a` is `null`, the result is unspecified.
+	**/
+	public inline function concat(a:ReadOnlyArray<T>):Array<T> {
+		return this.concat(cast a);
+	}
+}