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Kha/Tools/linux_arm64/std/haxe/rtti/Rtti.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.rtti;
+
+import haxe.rtti.CType;
+
+/**
+	Rtti is a helper class which supplements the `@:rtti` metadata.
+
+	@see <https://haxe.org/manual/cr-rtti.html>
+**/
+class Rtti {
+	/**
+		Returns the `haxe.rtti.CType.Classdef` corresponding to class `c`.
+
+		If `c` has no runtime type information, e.g. because no `@:rtti` was
+		added, an exception of type `String` is thrown.
+
+		If `c` is `null`, the result is unspecified.
+	**/
+	static public function getRtti<T>(c:Class<T>):Classdef {
+		var rtti = Reflect.field(c, "__rtti");
+		if (rtti == null) {
+			throw 'Class ${Type.getClassName(c)} has no RTTI information, consider adding @:rtti';
+		}
+		var x = Xml.parse(rtti).firstElement();
+		var infos = new haxe.rtti.XmlParser().processElement(x);
+		switch (infos) {
+			case TClassdecl(c):
+				return c;
+			case var t:
+				throw 'Enum mismatch: expected TClassDecl but found $t';
+		}
+	}
+
+	/**
+		Tells if `c` has runtime type information.
+
+		If `c` is `null`, the result is unspecified.
+	**/
+	static public function hasRtti<T>(c:Class<T>):Bool {
+		return Lambda.has(Type.getClassFields(c), "__rtti");
+	}
+}