//------------------------------------------------------------------------------
// <copyright file="XmlSchemaSerializer.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>                                                                
//------------------------------------------------------------------------------

namespace System.Xml.Serialization {
    using System;
    using System.Text;
    using System.IO;
    using System.Xml;
    using System.Xml.Schema;
    using System.Xml.Serialization;
    using System.Collections;
    using System.Collections.Specialized;


    internal class XmlAttributeComparer : IComparer {
        public int Compare(object o1, object o2) {
            XmlAttribute a1 = (XmlAttribute)o1;
            XmlAttribute a2 = (XmlAttribute)o2;
            int ns = String.Compare(a1.NamespaceURI, a2.NamespaceURI, StringComparison.Ordinal);
            if (ns == 0) {
                return String.Compare(a1.Name, a2.Name, StringComparison.Ordinal);
            }
            return ns;
        }
    }

    internal class XmlFacetComparer : IComparer {
        public int Compare(object o1, object o2) {
            XmlSchemaFacet f1 = (XmlSchemaFacet)o1;
            XmlSchemaFacet f2 = (XmlSchemaFacet)o2;
            return String.Compare(f1.GetType().Name + ":" + f1.Value, f2.GetType().Name + ":" + f2.Value, StringComparison.Ordinal);
        }
    }

    internal class QNameComparer : IComparer {
        public int Compare(object o1, object o2) {
            XmlQualifiedName qn1 = (XmlQualifiedName)o1;
            XmlQualifiedName qn2 = (XmlQualifiedName)o2;
            int ns = String.Compare(qn1.Namespace, qn2.Namespace, StringComparison.Ordinal);
            if (ns == 0) {
                return String.Compare(qn1.Name, qn2.Name, StringComparison.Ordinal);
            }
            return ns;
        }
    }

    internal class XmlSchemaObjectComparer : IComparer {
        QNameComparer comparer = new QNameComparer();
        public int Compare(object o1, object o2) {
            return comparer.Compare(NameOf((XmlSchemaObject)o1), NameOf((XmlSchemaObject)o2));
        }

        internal static XmlQualifiedName NameOf(XmlSchemaObject o) {
            if (o is XmlSchemaAttribute) {
                return ((XmlSchemaAttribute)o).QualifiedName;
            }
            else if (o is XmlSchemaAttributeGroup) {
                return ((XmlSchemaAttributeGroup)o).QualifiedName;
            }
            else if (o is XmlSchemaComplexType) {
                return ((XmlSchemaComplexType)o).QualifiedName;
            }
            else if (o is XmlSchemaSimpleType) {
                return ((XmlSchemaSimpleType)o).QualifiedName;
            }
            else if (o is XmlSchemaElement) {
                return ((XmlSchemaElement)o).QualifiedName;
            }
            else if (o is XmlSchemaGroup) {
                return ((XmlSchemaGroup)o).QualifiedName;
            }
            else if (o is XmlSchemaGroupRef) {
                return ((XmlSchemaGroupRef)o).RefName;
            }
            else if (o is XmlSchemaNotation) {
                return ((XmlSchemaNotation)o).QualifiedName;
            }
            else if (o is XmlSchemaSequence) {
                XmlSchemaSequence s = (XmlSchemaSequence)o;
                if (s.Items.Count == 0)
                    return new XmlQualifiedName(".sequence", Namespace(o));
                return NameOf(s.Items[0]);
            }
            else if (o is XmlSchemaAll) {
                XmlSchemaAll a = (XmlSchemaAll)o;
                if (a.Items.Count == 0)
                    return new XmlQualifiedName(".all", Namespace(o));
                return NameOf(a.Items);
            }
            else if (o is XmlSchemaChoice) {
                XmlSchemaChoice c = (XmlSchemaChoice)o;
                if (c.Items.Count == 0)
                    return new XmlQualifiedName(".choice", Namespace(o));
                return NameOf(c.Items);
            }
            else if (o is XmlSchemaAny) {
                return new XmlQualifiedName("*", SchemaObjectWriter.ToString(((XmlSchemaAny)o).NamespaceList));
            }
            else if (o is XmlSchemaIdentityConstraint) {
                return ((XmlSchemaIdentityConstraint)o).QualifiedName;
            }
            return new XmlQualifiedName("?", Namespace(o));
        }

        internal static XmlQualifiedName NameOf(XmlSchemaObjectCollection items) {
            ArrayList list = new ArrayList();
            
            for (int i = 0; i < items.Count; i++) {
                list.Add(NameOf(items[i]));
            }
            list.Sort(new QNameComparer());
            return (XmlQualifiedName)list[0];
        }

        internal static string Namespace(XmlSchemaObject o) {
            while (o != null && !(o is XmlSchema)) {
                o = o.Parent;
            }
            return o == null ? "" : ((XmlSchema)o).TargetNamespace;
        }
    }

    internal class SchemaObjectWriter {
        StringBuilder w = new StringBuilder();
        int indentLevel = -1;

        void WriteIndent() {
            for (int i = 0; i < indentLevel; i++) {
                w.Append(" ");
            }
        }
        protected void WriteAttribute(string localName, string ns, string value) {
            if (value == null || value.Length == 0)
                return;
            w.Append(",");
            w.Append(ns);
            if (ns != null && ns.Length != 0)
                w.Append(":");
            w.Append(localName);
            w.Append("=");
            w.Append(value);
        }
        protected void WriteAttribute(string localName, string ns, XmlQualifiedName value) {
            if (value.IsEmpty)
                return;
            WriteAttribute(localName, ns, value.ToString());
        }

        protected void WriteStartElement(string name) {
            NewLine();
            indentLevel++;
            w.Append("[");
            w.Append(name);
        }
        protected void WriteEndElement() {
            w.Append("]");
            indentLevel--;
        }
        protected void NewLine() {
            w.Append(Environment.NewLine);
            WriteIndent();
        }

        protected string GetString() {
            return w.ToString();
        }

        void WriteAttribute(XmlAttribute a) {
            if (a.Value != null) {
                WriteAttribute(a.Name, a.NamespaceURI, a.Value);
            }
        }

        void WriteAttributes(XmlAttribute[] a, XmlSchemaObject o) {
            if (a == null) return;
            ArrayList attrs = new ArrayList();
            for (int i = 0; i < a.Length; i++) {
                attrs.Add(a[i]);
            }
            attrs.Sort(new XmlAttributeComparer());
            for (int i = 0; i < attrs.Count; i++) {
                XmlAttribute attribute = (XmlAttribute)attrs[i];
                WriteAttribute(attribute);
            }
        }

        internal static string ToString(NamespaceList list) {
            if (list == null)
                return null;
            switch (list.Type) {
            case NamespaceList.ListType.Any:
                return "##any";
            case NamespaceList.ListType.Other:
                return "##other";
            case NamespaceList.ListType.Set:
                ArrayList ns = new ArrayList();

                foreach (string s in list.Enumerate) {
                    ns.Add(s);
                }
                ns.Sort();
                StringBuilder sb = new StringBuilder();
                bool first = true;
                foreach (string s in ns) {
                    if (first) {
                        first = false;
                    }
                    else {
                        sb.Append(" ");
                    }
                    if (s.Length == 0) {
                        sb.Append("##local");
                    }
                    else {
                        sb.Append(s);
                    }
                }
                return sb.ToString();

            default:
                return list.ToString();
            }
        }

        internal string WriteXmlSchemaObject(XmlSchemaObject o) {
            if (o == null) return String.Empty;
            Write3_XmlSchemaObject((XmlSchemaObject)o);
            return GetString();
        }

        void WriteSortedItems(XmlSchemaObjectCollection items) {
            if (items == null) return;

            ArrayList list = new ArrayList();
            for (int i = 0; i < items.Count; i++) {
                list.Add(items[i]);
            }
            list.Sort(new XmlSchemaObjectComparer());
            for (int i = 0; i < list.Count; i++) {
                Write3_XmlSchemaObject((XmlSchemaObject)list[i]);
            }
        }

        void Write1_XmlSchemaAttribute(XmlSchemaAttribute o) {
            if ((object)o == null) return;
            WriteStartElement("attribute");
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            WriteAttribute(@"default", @"", ((System.String)o.@DefaultValue));
            WriteAttribute(@"fixed", @"", ((System.String)o.@FixedValue));
            if (o.Parent != null && !(o.Parent is XmlSchema)) {
                if (o.QualifiedName != null && !o.QualifiedName.IsEmpty && o.QualifiedName.Namespace != null && o.QualifiedName.Namespace.Length != 0) {
                    WriteAttribute(@"form", @"", "qualified");
                }
                else {
                    WriteAttribute(@"form", @"", "unqualified");
                }
            }
            WriteAttribute(@"name", @"", ((System.String)o.@Name));

            if (!o.RefName.IsEmpty) {
                WriteAttribute("ref", "", o.RefName);
            }
            else if (!o.SchemaTypeName.IsEmpty) {
                WriteAttribute("type", "", o.SchemaTypeName);
            }
            XmlSchemaUse use = o.Use == XmlSchemaUse.None ? XmlSchemaUse.Optional : o.Use;
            WriteAttribute(@"use", @"", Write30_XmlSchemaUse(use));
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write9_XmlSchemaSimpleType((XmlSchemaSimpleType)o.@SchemaType);
            WriteEndElement();
        }

        void Write3_XmlSchemaObject(XmlSchemaObject o) {
           if ((object)o == null) return;
            System.Type t = o.GetType();

            if (t == typeof(XmlSchemaComplexType)) {
                Write35_XmlSchemaComplexType((XmlSchemaComplexType)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleType)) {
                Write9_XmlSchemaSimpleType((XmlSchemaSimpleType)o);
                return;
            }
            else if (t == typeof(XmlSchemaElement)) {
                Write46_XmlSchemaElement((XmlSchemaElement)o);
                return;
            }
            else if (t == typeof(XmlSchemaAppInfo)) {
                Write7_XmlSchemaAppInfo((XmlSchemaAppInfo)o);
                return;
            }
            else if (t == typeof(XmlSchemaDocumentation)) {
                Write6_XmlSchemaDocumentation((XmlSchemaDocumentation)o);
                return;
            }
            else if (t == typeof(XmlSchemaAnnotation)) {
                Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o);
                return;
            }
            else if (t == typeof(XmlSchemaGroup)) {
                Write57_XmlSchemaGroup((XmlSchemaGroup)o);
                return;
            }
            else if (t == typeof(XmlSchemaXPath)) {
                Write49_XmlSchemaXPath("xpath", "", (XmlSchemaXPath)o);
                return;
            }
            else if (t == typeof(XmlSchemaIdentityConstraint)) {
                Write48_XmlSchemaIdentityConstraint((XmlSchemaIdentityConstraint)o);
                return;
            }
            else if (t == typeof(XmlSchemaUnique)) {
                Write51_XmlSchemaUnique((XmlSchemaUnique)o);
                return;
            }
            else if (t == typeof(XmlSchemaKeyref)) {
                Write50_XmlSchemaKeyref((XmlSchemaKeyref)o);
                return;
            }
            else if (t == typeof(XmlSchemaKey)) {
                Write47_XmlSchemaKey((XmlSchemaKey)o);
                return;
            }
            else if (t == typeof(XmlSchemaGroupRef)) {
                Write55_XmlSchemaGroupRef((XmlSchemaGroupRef)o);
                return;
            }
            else if (t == typeof(XmlSchemaAny)) {
                Write53_XmlSchemaAny((XmlSchemaAny)o);
                return;
            }
            else if (t == typeof(XmlSchemaSequence)) {
                Write54_XmlSchemaSequence((XmlSchemaSequence)o);
                return;
            }
            else if (t == typeof(XmlSchemaChoice)) {
                Write52_XmlSchemaChoice((XmlSchemaChoice)o);
                return;
            }
            else if (t == typeof(XmlSchemaAll)) {
                Write43_XmlSchemaAll((XmlSchemaAll)o);
                return;
            }
            else if (t == typeof(XmlSchemaComplexContentRestriction)) {
                Write56_XmlSchemaComplexContentRestriction((XmlSchemaComplexContentRestriction)o);
                return;
            }
            else if (t == typeof(XmlSchemaComplexContentExtension)) {
                Write42_XmlSchemaComplexContentExtension((XmlSchemaComplexContentExtension)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleContentRestriction)) {
                Write40_XmlSchemaSimpleContentRestriction((XmlSchemaSimpleContentRestriction)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleContentExtension)) {
                Write38_XmlSchemaSimpleContentExtension((XmlSchemaSimpleContentExtension)o);
                return;
            }
            else if (t == typeof(XmlSchemaComplexContent)) {
                Write41_XmlSchemaComplexContent((XmlSchemaComplexContent)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleContent)) {
                Write36_XmlSchemaSimpleContent((XmlSchemaSimpleContent)o);
                return;
            }
            else if (t == typeof(XmlSchemaAnyAttribute)) {
                Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o);
                return;
            }
            else if (t == typeof(XmlSchemaAttributeGroupRef)) {
                Write32_XmlSchemaAttributeGroupRef((XmlSchemaAttributeGroupRef)o);
                return;
            }
            else if (t == typeof(XmlSchemaAttributeGroup)) {
                Write31_XmlSchemaAttributeGroup((XmlSchemaAttributeGroup)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleTypeRestriction)) {
                Write15_XmlSchemaSimpleTypeRestriction((XmlSchemaSimpleTypeRestriction)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleTypeList)) {
                Write14_XmlSchemaSimpleTypeList((XmlSchemaSimpleTypeList)o);
                return;
            }
            else if (t == typeof(XmlSchemaSimpleTypeUnion)) {
                Write12_XmlSchemaSimpleTypeUnion((XmlSchemaSimpleTypeUnion)o);
                return;
            }
            else if (t == typeof(XmlSchemaAttribute)) {
                Write1_XmlSchemaAttribute((XmlSchemaAttribute)o);
                return;
            }
        }

        void Write5_XmlSchemaAnnotation(XmlSchemaAnnotation o) {
            if ((object)o == null) return;
            WriteStartElement("annotation");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            System.Xml.Schema.XmlSchemaObjectCollection a = (System.Xml.Schema.XmlSchemaObjectCollection)o.@Items;
            if (a != null) {
                for (int ia = 0; ia < a.Count; ia++) {
                    XmlSchemaObject ai = (XmlSchemaObject)a[ia];
                    if (ai is XmlSchemaAppInfo) {
                        Write7_XmlSchemaAppInfo((XmlSchemaAppInfo)ai);
                    }
                    else if (ai is XmlSchemaDocumentation) {
                        Write6_XmlSchemaDocumentation((XmlSchemaDocumentation)ai);
                    }
                }
            }
            WriteEndElement();
        }

        void Write6_XmlSchemaDocumentation(XmlSchemaDocumentation o) {
            if ((object)o == null) return;
            WriteStartElement("documentation");
            
            WriteAttribute(@"source", @"", ((System.String)o.@Source));
            WriteAttribute(@"lang", @"http://www.w3.org/XML/1998/namespace", ((System.String)o.@Language));
            XmlNode[] a = (XmlNode[])o.@Markup;
            if (a != null) {
                for (int ia = 0; ia < a.Length; ia++) {
                    XmlNode ai = (XmlNode)a[ia];
                    WriteStartElement("node");
                    WriteAttribute("xml", "", ai.OuterXml);
                }
            }
            WriteEndElement();
        }

        void Write7_XmlSchemaAppInfo(XmlSchemaAppInfo o) {
            if ((object)o == null) return;
            WriteStartElement("appinfo");
            
            WriteAttribute("source", "", o.Source);
            XmlNode[] a = (XmlNode[])o.@Markup;
            if (a != null) {
                for (int ia = 0; ia < a.Length; ia++) {
                    XmlNode ai = (XmlNode)a[ia];
                    WriteStartElement("node");
                    WriteAttribute("xml", "", ai.OuterXml);
                }
            }
            WriteEndElement();
        }

        void Write9_XmlSchemaSimpleType(XmlSchemaSimpleType o) {
            if ((object)o == null) return;
            WriteStartElement("simpleType");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttribute(@"final", @"", Write11_XmlSchemaDerivationMethod(o.FinalResolved));
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@Content is XmlSchemaSimpleTypeUnion) {
                Write12_XmlSchemaSimpleTypeUnion((XmlSchemaSimpleTypeUnion)o.@Content);
            }
            else if (o.@Content is XmlSchemaSimpleTypeRestriction) {
                Write15_XmlSchemaSimpleTypeRestriction((XmlSchemaSimpleTypeRestriction)o.@Content);
            }
            else if (o.@Content is XmlSchemaSimpleTypeList) {
                Write14_XmlSchemaSimpleTypeList((XmlSchemaSimpleTypeList)o.@Content);
            }
            WriteEndElement();
        }

        string Write11_XmlSchemaDerivationMethod(XmlSchemaDerivationMethod v) {
            return v.ToString();
        }

        void Write12_XmlSchemaSimpleTypeUnion(XmlSchemaSimpleTypeUnion o) {
            if ((object)o == null) return;
            WriteStartElement("union");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);

            if (o.MemberTypes != null) {
                ArrayList list = new ArrayList();
                for (int i = 0; i < o.MemberTypes.Length; i++) {
                    list.Add(o.MemberTypes[i]);
                }
                list.Sort(new QNameComparer());
            
                w.Append(",");
                w.Append("memberTypes=");

                for (int i = 0; i < list.Count; i++) {
                    XmlQualifiedName q = (XmlQualifiedName)list[i];
                    w.Append(q.ToString());
                    w.Append(",");
                }
            }
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteSortedItems(o.@BaseTypes);
            WriteEndElement();
        }

        void Write14_XmlSchemaSimpleTypeList(XmlSchemaSimpleTypeList o) {
            if ((object)o == null) return;
            WriteStartElement("list");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            if (!o.@ItemTypeName.IsEmpty){
                WriteAttribute(@"itemType", @"", o.@ItemTypeName);
            }
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write9_XmlSchemaSimpleType((XmlSchemaSimpleType)o.@ItemType);
            WriteEndElement();
        }

        void Write15_XmlSchemaSimpleTypeRestriction(XmlSchemaSimpleTypeRestriction o) {
            if ((object)o == null) return;
            WriteStartElement("restriction");
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            if (!o.@BaseTypeName.IsEmpty){
                WriteAttribute(@"base", @"", o.@BaseTypeName);
            }
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write9_XmlSchemaSimpleType((XmlSchemaSimpleType)o.@BaseType);
            WriteFacets(o.Facets);
            WriteEndElement();
        }

        void WriteFacets(XmlSchemaObjectCollection facets) {
            if (facets == null) return;

            ArrayList a = new ArrayList();
            for (int i = 0; i < facets.Count; i++) {
                a.Add(facets[i]);
            }
            a.Sort(new XmlFacetComparer());
            for (int ia = 0; ia < a.Count; ia++) {
                XmlSchemaObject ai = (XmlSchemaObject)a[ia];
                if (ai is XmlSchemaMinExclusiveFacet) {
                    Write_XmlSchemaFacet("minExclusive", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaMaxInclusiveFacet) {
                    Write_XmlSchemaFacet("maxInclusive", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaMaxExclusiveFacet) {
                    Write_XmlSchemaFacet("maxExclusive", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaMinInclusiveFacet) {
                    Write_XmlSchemaFacet("minInclusive", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaLengthFacet) {
                    Write_XmlSchemaFacet("length", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaEnumerationFacet) {
                    Write_XmlSchemaFacet("enumeration", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaMinLengthFacet) {
                    Write_XmlSchemaFacet("minLength", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaPatternFacet) {
                    Write_XmlSchemaFacet("pattern", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaTotalDigitsFacet) {
                    Write_XmlSchemaFacet("totalDigits", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaMaxLengthFacet) {
                    Write_XmlSchemaFacet("maxLength", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaWhiteSpaceFacet) {
                    Write_XmlSchemaFacet("whiteSpace", (XmlSchemaFacet)ai);
                }
                else if (ai is XmlSchemaFractionDigitsFacet) {
                    Write_XmlSchemaFacet("fractionDigit", (XmlSchemaFacet)ai);
                }
            }
        }

        void Write_XmlSchemaFacet(string name, XmlSchemaFacet o) {
            if ((object)o == null) return;
            WriteStartElement(name);
            
            WriteAttribute("id", "", o.Id);
            WriteAttribute("value", "", o.Value);
            if (o.IsFixed) {
                WriteAttribute(@"fixed", @"", XmlConvert.ToString(o.IsFixed));
            }
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteEndElement();
        }

        string Write30_XmlSchemaUse(XmlSchemaUse v) {
            string s = null;
            switch (v) {
            case XmlSchemaUse.@Optional:s = @"optional"; break;
            case XmlSchemaUse.@Prohibited:s = @"prohibited"; break;
            case XmlSchemaUse.@Required:s = @"required"; break;
            default: break;
            }
            return s;
        }

        void Write31_XmlSchemaAttributeGroup(XmlSchemaAttributeGroup o) {
            if ((object)o == null) return;
            WriteStartElement("attributeGroup");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteSortedItems(o.Attributes);
            Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o.@AnyAttribute);
            WriteEndElement();
        }

        void Write32_XmlSchemaAttributeGroupRef(XmlSchemaAttributeGroupRef o) {
            if ((object)o == null) return;
            WriteStartElement("attributeGroup");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));

            if (!o.RefName.IsEmpty) {
                WriteAttribute("ref", "", o.RefName);
            }
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteEndElement();
        }

        void Write33_XmlSchemaAnyAttribute(XmlSchemaAnyAttribute o) {
            if ((object)o == null) return;
            WriteStartElement("anyAttribute");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute("namespace", "", ToString(o.NamespaceList));
            XmlSchemaContentProcessing process = o.@ProcessContents == XmlSchemaContentProcessing.@None ? XmlSchemaContentProcessing.Strict : o.@ProcessContents;
            WriteAttribute(@"processContents", @"", Write34_XmlSchemaContentProcessing(process));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteEndElement();
        }

        string Write34_XmlSchemaContentProcessing(XmlSchemaContentProcessing v) {
            string s = null;
            switch (v) {
            case XmlSchemaContentProcessing.@Skip:s = @"skip"; break;
            case XmlSchemaContentProcessing.@Lax:s = @"lax"; break;
            case XmlSchemaContentProcessing.@Strict:s = @"strict"; break;
            default: break;
            }
            return s;
        }

        void Write35_XmlSchemaComplexType(XmlSchemaComplexType o) {
            if ((object)o == null) return;
            WriteStartElement("complexType");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttribute(@"final", @"", Write11_XmlSchemaDerivationMethod(o.FinalResolved));
            if (((System.Boolean)o.@IsAbstract) != false) {
                WriteAttribute(@"abstract", @"", XmlConvert.ToString((System.Boolean)((System.Boolean)o.@IsAbstract)));
            }
            WriteAttribute(@"block", @"", Write11_XmlSchemaDerivationMethod(o.BlockResolved));
            if (((System.Boolean)o.@IsMixed) != false) {
                WriteAttribute(@"mixed", @"", XmlConvert.ToString((System.Boolean)((System.Boolean)o.@IsMixed)));
            }
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@ContentModel is XmlSchemaComplexContent) {
                Write41_XmlSchemaComplexContent((XmlSchemaComplexContent)o.@ContentModel);
            }
            else if (o.@ContentModel is XmlSchemaSimpleContent) {
                Write36_XmlSchemaSimpleContent((XmlSchemaSimpleContent)o.@ContentModel);
            }
            if (o.@Particle is XmlSchemaSequence) {
                Write54_XmlSchemaSequence((XmlSchemaSequence)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaGroupRef) {
                Write55_XmlSchemaGroupRef((XmlSchemaGroupRef)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaChoice) {
                Write52_XmlSchemaChoice((XmlSchemaChoice)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaAll) {
                Write43_XmlSchemaAll((XmlSchemaAll)o.@Particle);
            }
            WriteSortedItems(o.Attributes);
            Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o.@AnyAttribute);
            WriteEndElement();
        }

        void Write36_XmlSchemaSimpleContent(XmlSchemaSimpleContent o) {
            if ((object)o == null) return;
            WriteStartElement("simpleContent");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@Content is XmlSchemaSimpleContentRestriction) {
                Write40_XmlSchemaSimpleContentRestriction((XmlSchemaSimpleContentRestriction)o.@Content);
            }
            else if (o.@Content is XmlSchemaSimpleContentExtension) {
                Write38_XmlSchemaSimpleContentExtension((XmlSchemaSimpleContentExtension)o.@Content);
            }
            WriteEndElement();
        }

        void Write38_XmlSchemaSimpleContentExtension(XmlSchemaSimpleContentExtension o) {
            if ((object)o == null) return;
            WriteStartElement("extension");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            if (!o.@BaseTypeName.IsEmpty){
                WriteAttribute(@"base", @"", o.@BaseTypeName);
            }
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteSortedItems(o.Attributes);
            Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o.@AnyAttribute);
            WriteEndElement();
        }

        void Write40_XmlSchemaSimpleContentRestriction(XmlSchemaSimpleContentRestriction o) {
            if ((object)o == null) return;
            WriteStartElement("restriction");
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            if (!o.@BaseTypeName.IsEmpty){
                WriteAttribute(@"base", @"", o.@BaseTypeName);
            }
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write9_XmlSchemaSimpleType((XmlSchemaSimpleType)o.@BaseType); 
            WriteFacets(o.Facets);
            WriteSortedItems(o.Attributes);
            Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o.@AnyAttribute);
            WriteEndElement();
        }

        void Write41_XmlSchemaComplexContent(XmlSchemaComplexContent o) {
            if ((object)o == null) return;
            WriteStartElement("complexContent");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"mixed", @"", XmlConvert.ToString((System.Boolean)((System.Boolean)o.@IsMixed)));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@Content is XmlSchemaComplexContentRestriction) {
                Write56_XmlSchemaComplexContentRestriction((XmlSchemaComplexContentRestriction)o.@Content);
            }
            else if (o.@Content is XmlSchemaComplexContentExtension) {
                Write42_XmlSchemaComplexContentExtension((XmlSchemaComplexContentExtension)o.@Content);
            }
            WriteEndElement();
        }

        void Write42_XmlSchemaComplexContentExtension(XmlSchemaComplexContentExtension o) {
            if ((object)o == null) return;
            WriteStartElement("extension");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            if (!o.@BaseTypeName.IsEmpty){
                WriteAttribute(@"base", @"", o.@BaseTypeName);
            }
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@Particle is XmlSchemaSequence) {
                Write54_XmlSchemaSequence((XmlSchemaSequence)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaGroupRef) {
                Write55_XmlSchemaGroupRef((XmlSchemaGroupRef)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaChoice) {
                Write52_XmlSchemaChoice((XmlSchemaChoice)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaAll) {
                Write43_XmlSchemaAll((XmlSchemaAll)o.@Particle);
            }
            WriteSortedItems(o.Attributes);
            Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o.@AnyAttribute);
            WriteEndElement();
        }

        void Write43_XmlSchemaAll(XmlSchemaAll o) {
            if ((object)o == null) return;
            WriteStartElement("all");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute("minOccurs", "", XmlConvert.ToString(o.MinOccurs));
            WriteAttribute("maxOccurs", "", o.MaxOccurs == decimal.MaxValue ? "unbounded" : XmlConvert.ToString(o.MaxOccurs));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteSortedItems(o.@Items);
            WriteEndElement();
        }

        void Write46_XmlSchemaElement(XmlSchemaElement o) {
            if ((object)o == null) return;
            System.Type t = o.GetType();
            WriteStartElement("element");
            WriteAttribute(@"id", @"", o.Id);
            WriteAttribute("minOccurs", "", XmlConvert.ToString(o.MinOccurs));
            WriteAttribute("maxOccurs", "", o.MaxOccurs == decimal.MaxValue ? "unbounded" : XmlConvert.ToString(o.MaxOccurs));
            if (((System.Boolean)o.@IsAbstract) != false) {
                WriteAttribute(@"abstract", @"", XmlConvert.ToString((System.Boolean)((System.Boolean)o.@IsAbstract)));
            }
            WriteAttribute(@"block", @"", Write11_XmlSchemaDerivationMethod(o.BlockResolved));
            WriteAttribute(@"default", @"", o.DefaultValue);
            WriteAttribute(@"final", @"", Write11_XmlSchemaDerivationMethod(o.FinalResolved));
            WriteAttribute(@"fixed", @"", o.FixedValue);
            if (o.Parent != null && !(o.Parent is XmlSchema)) {
                if (o.QualifiedName != null && !o.QualifiedName.IsEmpty && o.QualifiedName.Namespace != null && o.QualifiedName.Namespace.Length != 0) {
                    WriteAttribute(@"form", @"", "qualified");
                }
                else {
                    WriteAttribute(@"form", @"", "unqualified");
                }
            }
            if (o.Name != null && o.Name.Length != 0) {
                WriteAttribute(@"name", @"", o.Name);
            }
            if (o.IsNillable) {
                WriteAttribute(@"nillable", @"", XmlConvert.ToString(o.IsNillable));
            }
            if (!o.SubstitutionGroup.IsEmpty) {
                WriteAttribute("substitutionGroup", "", o.SubstitutionGroup);
            }
            if (!o.RefName.IsEmpty) {
                WriteAttribute("ref", "", o.RefName);
            }
            else if (!o.SchemaTypeName.IsEmpty) {
                WriteAttribute("type", "", o.SchemaTypeName);
            }
            
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation(o.Annotation);
            if (o.SchemaType is XmlSchemaComplexType) {
                Write35_XmlSchemaComplexType((XmlSchemaComplexType)o.SchemaType);
            }
            else if (o.SchemaType is XmlSchemaSimpleType) {
                Write9_XmlSchemaSimpleType((XmlSchemaSimpleType)o.SchemaType);
            }
            WriteSortedItems(o.Constraints);
            WriteEndElement();
        }

        void Write47_XmlSchemaKey(XmlSchemaKey o) {
            if ((object)o == null) return;
            System.Type t = o.GetType();
            WriteStartElement("key");
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write49_XmlSchemaXPath(@"selector", @"", (XmlSchemaXPath)o.@Selector); {
            XmlSchemaObjectCollection a = (XmlSchemaObjectCollection)o.@Fields;
            if (a != null) {
                for (int ia = 0; ia < a.Count; ia++) {
                    Write49_XmlSchemaXPath(@"field", @"", (XmlSchemaXPath)a[ia]);
                }
            }
        }
            WriteEndElement();
        }

        void Write48_XmlSchemaIdentityConstraint(XmlSchemaIdentityConstraint o) {
            if ((object)o == null) return;
            System.Type t = o.GetType();
            if (t == typeof(XmlSchemaUnique)) {
                Write51_XmlSchemaUnique((XmlSchemaUnique)o);
                return;
            }
            else if (t == typeof(XmlSchemaKeyref)) {
                Write50_XmlSchemaKeyref((XmlSchemaKeyref)o);
                return;
            }
            else if (t == typeof(XmlSchemaKey)) {
                Write47_XmlSchemaKey((XmlSchemaKey)o);
                return;
            }
        }

        void Write49_XmlSchemaXPath(string name, string ns, XmlSchemaXPath o) {
            if ((object)o == null) return;
            WriteStartElement(name);
            WriteAttribute(@"id", @"", o.@Id);
            WriteAttribute(@"xpath", @"", o.@XPath);
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteEndElement();
        }

        void Write50_XmlSchemaKeyref(XmlSchemaKeyref o) {
            if ((object)o == null) return;
            System.Type t = o.GetType();
            WriteStartElement("keyref");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            // 
            WriteAttribute(@"refer", @"", o.@Refer);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write49_XmlSchemaXPath(@"selector", @"", (XmlSchemaXPath)o.@Selector); {
            XmlSchemaObjectCollection a = (XmlSchemaObjectCollection)o.@Fields;
            if (a != null) {
                for (int ia = 0; ia < a.Count; ia++) {
                    Write49_XmlSchemaXPath(@"field", @"", (XmlSchemaXPath)a[ia]);
                }
            }
        }
            WriteEndElement();
        }

        void Write51_XmlSchemaUnique(XmlSchemaUnique o) {
            if ((object)o == null) return;
            System.Type t = o.GetType();
            WriteStartElement("unique");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            Write49_XmlSchemaXPath("selector", "", (XmlSchemaXPath)o.@Selector);
            XmlSchemaObjectCollection a = (XmlSchemaObjectCollection)o.@Fields;
            if (a != null) {
                for (int ia = 0; ia < a.Count; ia++) {
                    Write49_XmlSchemaXPath("field", "", (XmlSchemaXPath)a[ia]);
                }
            }
            WriteEndElement();
        }

        void Write52_XmlSchemaChoice(XmlSchemaChoice o) {
            if ((object)o == null) return;
            System.Type t = o.GetType();
            WriteStartElement("choice");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute("minOccurs", "", XmlConvert.ToString(o.MinOccurs));
            WriteAttribute(@"maxOccurs", @"", o.MaxOccurs == decimal.MaxValue ? "unbounded" : XmlConvert.ToString(o.MaxOccurs));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteSortedItems(o.@Items);
            WriteEndElement();
        }

        void Write53_XmlSchemaAny(XmlSchemaAny o) {
            if ((object)o == null) return;
            WriteStartElement("any");
            
            WriteAttribute(@"id", @"", o.@Id);
            WriteAttribute("minOccurs", "", XmlConvert.ToString(o.MinOccurs));
            WriteAttribute(@"maxOccurs", @"", o.MaxOccurs == decimal.MaxValue ? "unbounded" : XmlConvert.ToString(o.MaxOccurs));
            WriteAttribute(@"namespace", @"", ToString(o.NamespaceList));
            XmlSchemaContentProcessing process = o.@ProcessContents == XmlSchemaContentProcessing.@None ? XmlSchemaContentProcessing.Strict : o.@ProcessContents;
            WriteAttribute(@"processContents", @"", Write34_XmlSchemaContentProcessing(process));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteEndElement();
        }

        void Write54_XmlSchemaSequence(XmlSchemaSequence o) {
            if ((object)o == null) return;
            WriteStartElement("sequence");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute("minOccurs", "", XmlConvert.ToString(o.MinOccurs));
            WriteAttribute("maxOccurs", "", o.MaxOccurs == decimal.MaxValue ? "unbounded" : XmlConvert.ToString(o.MaxOccurs));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            XmlSchemaObjectCollection a = (XmlSchemaObjectCollection)o.@Items;
            if (a != null) {
                for (int ia = 0; ia < a.Count; ia++) {
                    XmlSchemaObject ai = (XmlSchemaObject)a[ia];
                    if (ai is XmlSchemaAny) {
                        Write53_XmlSchemaAny((XmlSchemaAny)ai);
                    }
                    else if (ai is XmlSchemaSequence) {
                        Write54_XmlSchemaSequence((XmlSchemaSequence)ai);
                    }
                    else if (ai is XmlSchemaChoice) {
                        Write52_XmlSchemaChoice((XmlSchemaChoice)ai);
                    }
                    else if (ai is XmlSchemaElement) {
                        Write46_XmlSchemaElement((XmlSchemaElement)ai);
                    }
                    else if (ai is XmlSchemaGroupRef) {
                        Write55_XmlSchemaGroupRef((XmlSchemaGroupRef)ai);
                    }
                }
            }
            WriteEndElement();
        }

        void Write55_XmlSchemaGroupRef(XmlSchemaGroupRef o) {
            if ((object)o == null) return;
            WriteStartElement("group");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute("minOccurs", "", XmlConvert.ToString(o.MinOccurs));
            WriteAttribute(@"maxOccurs", @"", o.MaxOccurs == decimal.MaxValue ? "unbounded" : XmlConvert.ToString(o.MaxOccurs));
            
            if (!o.RefName.IsEmpty) {
                WriteAttribute("ref", "", o.RefName);
            }
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            WriteEndElement();
        }

        void Write56_XmlSchemaComplexContentRestriction(XmlSchemaComplexContentRestriction o) {
            if ((object)o == null) return;
            WriteStartElement("restriction");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);

            if (!o.@BaseTypeName.IsEmpty){
                WriteAttribute(@"base", @"", o.@BaseTypeName);
            }

            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@Particle is XmlSchemaSequence) {
                Write54_XmlSchemaSequence((XmlSchemaSequence)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaGroupRef) {
                Write55_XmlSchemaGroupRef((XmlSchemaGroupRef)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaChoice) {
                Write52_XmlSchemaChoice((XmlSchemaChoice)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaAll) {
                Write43_XmlSchemaAll((XmlSchemaAll)o.@Particle);
            }
            WriteSortedItems(o.Attributes);
            Write33_XmlSchemaAnyAttribute((XmlSchemaAnyAttribute)o.@AnyAttribute);
            WriteEndElement();
        }

        void Write57_XmlSchemaGroup(XmlSchemaGroup o) {
            if ((object)o == null) return;
            WriteStartElement("group");
            
            WriteAttribute(@"id", @"", ((System.String)o.@Id));
            WriteAttribute(@"name", @"", ((System.String)o.@Name));
            WriteAttributes((XmlAttribute[])o.@UnhandledAttributes, o);
            Write5_XmlSchemaAnnotation((XmlSchemaAnnotation)o.@Annotation);
            if (o.@Particle is XmlSchemaSequence) {
                Write54_XmlSchemaSequence((XmlSchemaSequence)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaChoice) {
                Write52_XmlSchemaChoice((XmlSchemaChoice)o.@Particle);
            }
            else if (o.@Particle is XmlSchemaAll) {
                Write43_XmlSchemaAll((XmlSchemaAll)o.@Particle);
            }
            WriteEndElement();
        }
    }
}