Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Xml/System/Xml/Schema/ValidationState.cs

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+//------------------------------------------------------------------------------
+// <copyright file="validationstate.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright> 
+// <owner current="true" primary="true">[....]</owner>                                                               
+//------------------------------------------------------------------------------
+
+namespace System.Xml.Schema {
+    using System;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Runtime.InteropServices;
+
+    [StructLayout(LayoutKind.Explicit)]
+    internal struct StateUnion {
+        [FieldOffset(0)] public int State;  //DFA 
+        [FieldOffset(0)] public int AllElementsRequired; //AllContentValidator
+        [FieldOffset(0)] public int CurPosIndex; //NFAContentValidator
+        [FieldOffset(0)] public int NumberOfRunningPos; //RangeContentValidator
+    }
+
+    internal sealed class ValidationState {
+        
+        public bool              IsNill;
+        public bool              IsDefault;
+        public bool              NeedValidateChildren;  // whether need to validate the children of this element   
+        public bool CheckRequiredAttribute; //PSVI
+        public bool ValidationSkipped;
+        public int               Depth;         // The validation state  
+        public XmlSchemaContentProcessing ProcessContents;
+        public XmlSchemaValidity          Validity;
+        public SchemaElementDecl ElementDecl;            // ElementDecl
+        public SchemaElementDecl ElementDeclBeforeXsi; //elementDecl before its changed by that of xsi:type's
+        public string LocalName;
+        public string Namespace;
+        public ConstraintStruct[] Constr;
+
+        public StateUnion   CurrentState; 
+
+        //For content model validation
+        public bool HasMatched;       // whether the element has been verified correctly
+        
+        //For NFAs
+        public BitSet[] CurPos = new BitSet[2];
+    
+        //For all
+        public BitSet AllElementsSet;
+
+        //For MinMaxNFA
+        public List<RangePositionInfo>  RunningPositions;
+        public bool                     TooComplex;
+    };
+
+
+
+}
+