SchemaInfo.cs source code in C# .NET

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Code:

/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Xml / System / Xml / schema / SchemaInfo.cs / 1305376 / SchemaInfo.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
using System; 
using System.Xml;
using System.Diagnostics; 
using System.Collections.Generic;

namespace System.Xml.Schema {
 
#if !SILVERLIGHT
    internal enum AttributeMatchState { 
        AttributeFound, 
        AnyIdAttributeFound,
        UndeclaredElementAndAttribute, 
        UndeclaredAttribute,
        AnyAttributeLax,
        AnyAttributeSkip,
        ProhibitedAnyAttribute, 
        ProhibitedAttribute,
        AttributeNameMismatch, 
        ValidateAttributeInvalidCall, 
    }
#endif 

    internal class SchemaInfo : IDtdInfo {
        Dictionary elementDecls = new Dictionary();
        Dictionary undeclaredElementDecls = new Dictionary(); 

        Dictionary generalEntities; 
        Dictionary parameterEntities; 

        XmlQualifiedName docTypeName = XmlQualifiedName.Empty; 
        string internalDtdSubset = string.Empty;
        bool hasNonCDataAttributes = false;
        bool hasDefaultAttributes = false;
 
#if !SILVERLIGHT
        Dictionary targetNamespaces = new Dictionary(); 
        Dictionary attributeDecls = new Dictionary(); 
        int errorCount;
        SchemaType schemaType; 
        Dictionary elementDeclsByType = new Dictionary();
        Dictionary notations;
#endif
 

        internal SchemaInfo() { 
#if !SILVERLIGHT 
            schemaType = SchemaType.None;
#endif 
        }

        public XmlQualifiedName DocTypeName {
            get { return docTypeName; } 
            set { docTypeName = value; }
        } 
 
        internal string InternalDtdSubset {
            get { return internalDtdSubset; } 
            set { internalDtdSubset = value; }
        }

        internal Dictionary ElementDecls { 
            get { return elementDecls; }
        } 
 
        internal Dictionary UndeclaredElementDecls {
            get { return undeclaredElementDecls; } 
        }

        internal Dictionary GeneralEntities {
            get { 
                if (this.generalEntities == null) {
                    this.generalEntities = new Dictionary(); 
                } 
                return this.generalEntities;
            } 
        }

        internal Dictionary ParameterEntities {
            get { 
                if (this.parameterEntities == null) {
                    this.parameterEntities = new Dictionary(); 
                } 
                return this.parameterEntities;
            } 
        }

#if !SILVERLIGHT
        internal SchemaType SchemaType { 
            get { return schemaType;}
            set { schemaType = value;} 
        } 

        internal Dictionary TargetNamespaces { 
            get { return targetNamespaces; }
        }

        internal Dictionary ElementDeclsByType { 
            get { return elementDeclsByType; }
        } 
 
        internal Dictionary AttributeDecls {
            get { return attributeDecls; } 
        }

        internal Dictionary Notations {
            get { 
                if (this.notations == null) {
                    this.notations = new Dictionary(); 
                } 
                return this.notations;
            } 
        }

        internal int ErrorCount {
            get { return errorCount; } 
            set { errorCount = value; }
        } 
 
        internal SchemaElementDecl GetElementDecl(XmlQualifiedName qname) {
            SchemaElementDecl elemDecl; 
            if (elementDecls.TryGetValue(qname, out elemDecl)) {
                return elemDecl;
            }
            return null; 
        }
 
        internal SchemaElementDecl GetTypeDecl(XmlQualifiedName qname) { 
            SchemaElementDecl elemDecl;
            if (elementDeclsByType.TryGetValue(qname, out elemDecl)) { 
                return elemDecl;
            }
            return null;
        } 

 
        internal XmlSchemaElement GetElement(XmlQualifiedName qname) { 
            SchemaElementDecl ed = GetElementDecl(qname);
            if (ed != null) { 
                return ed.SchemaElement;
            }
            return null;
        } 

        internal XmlSchemaAttribute GetAttribute(XmlQualifiedName qname) { 
            SchemaAttDef attdef = (SchemaAttDef)attributeDecls[qname]; 
            if (attdef != null) {
                return attdef.SchemaAttribute; 
            }
            return null;
        }
 
        internal XmlSchemaElement GetType(XmlQualifiedName qname) {
            SchemaElementDecl ed = GetElementDecl(qname); 
            if (ed != null) { 
                return ed.SchemaElement;
            } 
            return null;
        }

        internal bool HasSchema(string ns) { 
            return targetNamespaces.ContainsKey(ns);
        } 
 
        internal bool Contains(string ns) {
            return targetNamespaces.ContainsKey(ns); 
        }

        internal SchemaAttDef GetAttributeXdr(SchemaElementDecl ed, XmlQualifiedName qname) {
            SchemaAttDef attdef = null; 
            if (ed != null) {
                attdef = ed.GetAttDef(qname);; 
                if (attdef == null) { 
                    if (!ed.ContentValidator.IsOpen || qname.Namespace.Length == 0) {
                        throw new XmlSchemaException(Res.Sch_UndeclaredAttribute, qname.ToString()); 
                    }
                    if (!attributeDecls.TryGetValue(qname, out attdef) && targetNamespaces.ContainsKey(qname.Namespace)) {
                        throw new XmlSchemaException(Res.Sch_UndeclaredAttribute, qname.ToString());
                    } 
                }
            } 
            return attdef; 
        }
 

        internal SchemaAttDef GetAttributeXsd(SchemaElementDecl ed, XmlQualifiedName qname, XmlSchemaObject partialValidationType, out AttributeMatchState attributeMatchState) {
            SchemaAttDef attdef = null;
            attributeMatchState = AttributeMatchState.UndeclaredAttribute; 
            if (ed != null) {
                attdef = ed.GetAttDef(qname); 
                if (attdef != null) { 
                    attributeMatchState = AttributeMatchState.AttributeFound;
                    return attdef; 
                }
                XmlSchemaAnyAttribute any = ed.AnyAttribute;
                if (any != null) {
                    if (!any.NamespaceList.Allows(qname)) { 
                        attributeMatchState = AttributeMatchState.ProhibitedAnyAttribute;
                    } 
                    else if (any.ProcessContentsCorrect != XmlSchemaContentProcessing.Skip) { 
                        if (attributeDecls.TryGetValue(qname, out attdef)) {
                            if (attdef.Datatype.TypeCode == XmlTypeCode.Id) { //anyAttribute match whose type is ID 
                                attributeMatchState = AttributeMatchState.AnyIdAttributeFound;
                            }
                            else {
                                attributeMatchState = AttributeMatchState.AttributeFound; 
                            }
                        } 
                        else if (any.ProcessContentsCorrect == XmlSchemaContentProcessing.Lax) { 
                            attributeMatchState = AttributeMatchState.AnyAttributeLax;
                        } 
                    }
                    else {
                        attributeMatchState = AttributeMatchState.AnyAttributeSkip;
                    } 
                }
                else if (ed.ProhibitedAttributes.ContainsKey(qname)) { 
                    attributeMatchState = AttributeMatchState.ProhibitedAttribute; 
                }
            } 
            else if (partialValidationType != null) {
                XmlSchemaAttribute attr = partialValidationType as XmlSchemaAttribute;
                if (attr != null) {
                    if (qname.Equals(attr.QualifiedName)) { 
                        attdef = attr.AttDef;
                        attributeMatchState = AttributeMatchState.AttributeFound; 
                    } 
                    else {
                        attributeMatchState = AttributeMatchState.AttributeNameMismatch; 
                    }
                }
                else {
                    attributeMatchState = AttributeMatchState.ValidateAttributeInvalidCall; 
                }
            } 
            else { 
                if (attributeDecls.TryGetValue(qname, out attdef)) {
                    attributeMatchState = AttributeMatchState.AttributeFound; 
                }
                else {
                    attributeMatchState = AttributeMatchState.UndeclaredElementAndAttribute;
                } 
            }
            return attdef; 
        } 

        internal SchemaAttDef GetAttributeXsd(SchemaElementDecl ed, XmlQualifiedName qname, ref bool skip) { 
            AttributeMatchState attributeMatchState;

            SchemaAttDef attDef = GetAttributeXsd(ed, qname, null, out attributeMatchState);
            switch(attributeMatchState) { 
                case AttributeMatchState.UndeclaredAttribute:
                    throw new XmlSchemaException(Res.Sch_UndeclaredAttribute, qname.ToString()); 
 
                case AttributeMatchState.ProhibitedAnyAttribute:
                case AttributeMatchState.ProhibitedAttribute: 
                    throw new XmlSchemaException(Res.Sch_ProhibitedAttribute, qname.ToString());

                case AttributeMatchState.AttributeFound:
                case AttributeMatchState.AnyIdAttributeFound: 
                case AttributeMatchState.AnyAttributeLax:
                case AttributeMatchState.UndeclaredElementAndAttribute: 
                    break; 

                case AttributeMatchState.AnyAttributeSkip: 
                    skip = true;
                    break;

                default: 
                    Debug.Assert(false);
                    break; 
            } 
            return attDef;
        } 

        internal void Add(SchemaInfo sinfo, ValidationEventHandler eventhandler) {
            if (schemaType == SchemaType.None) {
                schemaType = sinfo.SchemaType; 
            }
            else if (schemaType != sinfo.SchemaType) { 
                if (eventhandler != null) { 
                    eventhandler(this, new ValidationEventArgs(new XmlSchemaException(Res.Sch_MixSchemaTypes, string.Empty)));
                } 
                return;
            }

            foreach(string tns in sinfo.TargetNamespaces.Keys) { 
                if (!targetNamespaces.ContainsKey(tns)) {
                    targetNamespaces.Add(tns, true); 
                } 
            }
 
            foreach(KeyValuePair entry in sinfo.elementDecls) {
                if (!elementDecls.ContainsKey(entry.Key)) {
                    elementDecls.Add(entry.Key, entry.Value);
                } 
            }
            foreach(KeyValuePair entry in sinfo.elementDeclsByType) { 
                if (!elementDeclsByType.ContainsKey(entry.Key)) { 
                    elementDeclsByType.Add(entry.Key, entry.Value);
                } 
            }
            foreach (SchemaAttDef attdef in sinfo.AttributeDecls.Values) {
                if (!attributeDecls.ContainsKey(attdef.Name)) {
                    attributeDecls.Add(attdef.Name, attdef); 
                }
            } 
            foreach (SchemaNotation notation in sinfo.Notations.Values) { 
                if (!Notations.ContainsKey(notation.Name.Name)) {
                    Notations.Add(notation.Name.Name, notation); 
                }
            }

        } 
#endif
 
        internal void Finish() { 
            Dictionary elements = elementDecls;
            for ( int i = 0; i < 2; i++ ) { 
                foreach ( SchemaElementDecl e in elements.Values ) {
                    if ( e.HasNonCDataAttribute ) {
                        hasNonCDataAttributes = true;
                    } 
                    if ( e.DefaultAttDefs != null ) {
                        hasDefaultAttributes = true; 
                    } 
                }
                elements = undeclaredElementDecls; 
            }
        }
//
// IDtdInfo interface 
//
#region IDtdInfo Members 
        bool IDtdInfo.HasDefaultAttributes { 
            get {
                return hasDefaultAttributes; 
            }
        }

        bool IDtdInfo.HasNonCDataAttributes { 
            get {
                return hasNonCDataAttributes; 
            } 
        }
 
        IDtdAttributeListInfo IDtdInfo.LookupAttributeList(string prefix, string localName) {
            XmlQualifiedName qname = new XmlQualifiedName(prefix, localName);
            SchemaElementDecl elementDecl;
            if (!elementDecls.TryGetValue(qname, out elementDecl)) { 
                undeclaredElementDecls.TryGetValue(qname, out elementDecl);
            } 
            return elementDecl; 
        }
 
        IEnumerable IDtdInfo.GetAttributeLists() {
            foreach (SchemaElementDecl elemDecl in elementDecls.Values) {
                IDtdAttributeListInfo eleDeclAsAttList = (IDtdAttributeListInfo)elemDecl;
                yield return eleDeclAsAttList; 
            }
        } 
 
        IDtdEntityInfo IDtdInfo.LookupEntity(string name) {
            if (generalEntities == null) { 
                return null;
            }
            XmlQualifiedName qname = new XmlQualifiedName(name);
            SchemaEntity entity; 
            if (generalEntities.TryGetValue(qname, out entity)) {
                return entity; 
            } 
            return null;
        } 

        XmlQualifiedName IDtdInfo.Name {
            get { return docTypeName; }
        } 

        string IDtdInfo.InternalDtdSubset { 
            get { return internalDtdSubset; } 
        }
#endregion 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
using System; 
using System.Xml;
using System.Diagnostics; 
using System.Collections.Generic;

namespace System.Xml.Schema {
 
#if !SILVERLIGHT
    internal enum AttributeMatchState { 
        AttributeFound, 
        AnyIdAttributeFound,
        UndeclaredElementAndAttribute, 
        UndeclaredAttribute,
        AnyAttributeLax,
        AnyAttributeSkip,
        ProhibitedAnyAttribute, 
        ProhibitedAttribute,
        AttributeNameMismatch, 
        ValidateAttributeInvalidCall, 
    }
#endif 

    internal class SchemaInfo : IDtdInfo {
        Dictionary elementDecls = new Dictionary();
        Dictionary undeclaredElementDecls = new Dictionary(); 

        Dictionary generalEntities; 
        Dictionary parameterEntities; 

        XmlQualifiedName docTypeName = XmlQualifiedName.Empty; 
        string internalDtdSubset = string.Empty;
        bool hasNonCDataAttributes = false;
        bool hasDefaultAttributes = false;
 
#if !SILVERLIGHT
        Dictionary targetNamespaces = new Dictionary(); 
        Dictionary attributeDecls = new Dictionary(); 
        int errorCount;
        SchemaType schemaType; 
        Dictionary elementDeclsByType = new Dictionary();
        Dictionary notations;
#endif
 

        internal SchemaInfo() { 
#if !SILVERLIGHT 
            schemaType = SchemaType.None;
#endif 
        }

        public XmlQualifiedName DocTypeName {
            get { return docTypeName; } 
            set { docTypeName = value; }
        } 
 
        internal string InternalDtdSubset {
            get { return internalDtdSubset; } 
            set { internalDtdSubset = value; }
        }

        internal Dictionary ElementDecls { 
            get { return elementDecls; }
        } 
 
        internal Dictionary UndeclaredElementDecls {
            get { return undeclaredElementDecls; } 
        }

        internal Dictionary GeneralEntities {
            get { 
                if (this.generalEntities == null) {
                    this.generalEntities = new Dictionary(); 
                } 
                return this.generalEntities;
            } 
        }

        internal Dictionary ParameterEntities {
            get { 
                if (this.parameterEntities == null) {
                    this.parameterEntities = new Dictionary(); 
                } 
                return this.parameterEntities;
            } 
        }

#if !SILVERLIGHT
        internal SchemaType SchemaType { 
            get { return schemaType;}
            set { schemaType = value;} 
        } 

        internal Dictionary TargetNamespaces { 
            get { return targetNamespaces; }
        }

        internal Dictionary ElementDeclsByType { 
            get { return elementDeclsByType; }
        } 
 
        internal Dictionary AttributeDecls {
            get { return attributeDecls; } 
        }

        internal Dictionary Notations {
            get { 
                if (this.notations == null) {
                    this.notations = new Dictionary(); 
                } 
                return this.notations;
            } 
        }

        internal int ErrorCount {
            get { return errorCount; } 
            set { errorCount = value; }
        } 
 
        internal SchemaElementDecl GetElementDecl(XmlQualifiedName qname) {
            SchemaElementDecl elemDecl; 
            if (elementDecls.TryGetValue(qname, out elemDecl)) {
                return elemDecl;
            }
            return null; 
        }
 
        internal SchemaElementDecl GetTypeDecl(XmlQualifiedName qname) { 
            SchemaElementDecl elemDecl;
            if (elementDeclsByType.TryGetValue(qname, out elemDecl)) { 
                return elemDecl;
            }
            return null;
        } 

 
        internal XmlSchemaElement GetElement(XmlQualifiedName qname) { 
            SchemaElementDecl ed = GetElementDecl(qname);
            if (ed != null) { 
                return ed.SchemaElement;
            }
            return null;
        } 

        internal XmlSchemaAttribute GetAttribute(XmlQualifiedName qname) { 
            SchemaAttDef attdef = (SchemaAttDef)attributeDecls[qname]; 
            if (attdef != null) {
                return attdef.SchemaAttribute; 
            }
            return null;
        }
 
        internal XmlSchemaElement GetType(XmlQualifiedName qname) {
            SchemaElementDecl ed = GetElementDecl(qname); 
            if (ed != null) { 
                return ed.SchemaElement;
            } 
            return null;
        }

        internal bool HasSchema(string ns) { 
            return targetNamespaces.ContainsKey(ns);
        } 
 
        internal bool Contains(string ns) {
            return targetNamespaces.ContainsKey(ns); 
        }

        internal SchemaAttDef GetAttributeXdr(SchemaElementDecl ed, XmlQualifiedName qname) {
            SchemaAttDef attdef = null; 
            if (ed != null) {
                attdef = ed.GetAttDef(qname);; 
                if (attdef == null) { 
                    if (!ed.ContentValidator.IsOpen || qname.Namespace.Length == 0) {
                        throw new XmlSchemaException(Res.Sch_UndeclaredAttribute, qname.ToString()); 
                    }
                    if (!attributeDecls.TryGetValue(qname, out attdef) && targetNamespaces.ContainsKey(qname.Namespace)) {
                        throw new XmlSchemaException(Res.Sch_UndeclaredAttribute, qname.ToString());
                    } 
                }
            } 
            return attdef; 
        }
 

        internal SchemaAttDef GetAttributeXsd(SchemaElementDecl ed, XmlQualifiedName qname, XmlSchemaObject partialValidationType, out AttributeMatchState attributeMatchState) {
            SchemaAttDef attdef = null;
            attributeMatchState = AttributeMatchState.UndeclaredAttribute; 
            if (ed != null) {
                attdef = ed.GetAttDef(qname); 
                if (attdef != null) { 
                    attributeMatchState = AttributeMatchState.AttributeFound;
                    return attdef; 
                }
                XmlSchemaAnyAttribute any = ed.AnyAttribute;
                if (any != null) {
                    if (!any.NamespaceList.Allows(qname)) { 
                        attributeMatchState = AttributeMatchState.ProhibitedAnyAttribute;
                    } 
                    else if (any.ProcessContentsCorrect != XmlSchemaContentProcessing.Skip) { 
                        if (attributeDecls.TryGetValue(qname, out attdef)) {
                            if (attdef.Datatype.TypeCode == XmlTypeCode.Id) { //anyAttribute match whose type is ID 
                                attributeMatchState = AttributeMatchState.AnyIdAttributeFound;
                            }
                            else {
                                attributeMatchState = AttributeMatchState.AttributeFound; 
                            }
                        } 
                        else if (any.ProcessContentsCorrect == XmlSchemaContentProcessing.Lax) { 
                            attributeMatchState = AttributeMatchState.AnyAttributeLax;
                        } 
                    }
                    else {
                        attributeMatchState = AttributeMatchState.AnyAttributeSkip;
                    } 
                }
                else if (ed.ProhibitedAttributes.ContainsKey(qname)) { 
                    attributeMatchState = AttributeMatchState.ProhibitedAttribute; 
                }
            } 
            else if (partialValidationType != null) {
                XmlSchemaAttribute attr = partialValidationType as XmlSchemaAttribute;
                if (attr != null) {
                    if (qname.Equals(attr.QualifiedName)) { 
                        attdef = attr.AttDef;
                        attributeMatchState = AttributeMatchState.AttributeFound; 
                    } 
                    else {
                        attributeMatchState = AttributeMatchState.AttributeNameMismatch; 
                    }
                }
                else {
                    attributeMatchState = AttributeMatchState.ValidateAttributeInvalidCall; 
                }
            } 
            else { 
                if (attributeDecls.TryGetValue(qname, out attdef)) {
                    attributeMatchState = AttributeMatchState.AttributeFound; 
                }
                else {
                    attributeMatchState = AttributeMatchState.UndeclaredElementAndAttribute;
                } 
            }
            return attdef; 
        } 

        internal SchemaAttDef GetAttributeXsd(SchemaElementDecl ed, XmlQualifiedName qname, ref bool skip) { 
            AttributeMatchState attributeMatchState;

            SchemaAttDef attDef = GetAttributeXsd(ed, qname, null, out attributeMatchState);
            switch(attributeMatchState) { 
                case AttributeMatchState.UndeclaredAttribute:
                    throw new XmlSchemaException(Res.Sch_UndeclaredAttribute, qname.ToString()); 
 
                case AttributeMatchState.ProhibitedAnyAttribute:
                case AttributeMatchState.ProhibitedAttribute: 
                    throw new XmlSchemaException(Res.Sch_ProhibitedAttribute, qname.ToString());

                case AttributeMatchState.AttributeFound:
                case AttributeMatchState.AnyIdAttributeFound: 
                case AttributeMatchState.AnyAttributeLax:
                case AttributeMatchState.UndeclaredElementAndAttribute: 
                    break; 

                case AttributeMatchState.AnyAttributeSkip: 
                    skip = true;
                    break;

                default: 
                    Debug.Assert(false);
                    break; 
            } 
            return attDef;
        } 

        internal void Add(SchemaInfo sinfo, ValidationEventHandler eventhandler) {
            if (schemaType == SchemaType.None) {
                schemaType = sinfo.SchemaType; 
            }
            else if (schemaType != sinfo.SchemaType) { 
                if (eventhandler != null) { 
                    eventhandler(this, new ValidationEventArgs(new XmlSchemaException(Res.Sch_MixSchemaTypes, string.Empty)));
                } 
                return;
            }

            foreach(string tns in sinfo.TargetNamespaces.Keys) { 
                if (!targetNamespaces.ContainsKey(tns)) {
                    targetNamespaces.Add(tns, true); 
                } 
            }
 
            foreach(KeyValuePair entry in sinfo.elementDecls) {
                if (!elementDecls.ContainsKey(entry.Key)) {
                    elementDecls.Add(entry.Key, entry.Value);
                } 
            }
            foreach(KeyValuePair entry in sinfo.elementDeclsByType) { 
                if (!elementDeclsByType.ContainsKey(entry.Key)) { 
                    elementDeclsByType.Add(entry.Key, entry.Value);
                } 
            }
            foreach (SchemaAttDef attdef in sinfo.AttributeDecls.Values) {
                if (!attributeDecls.ContainsKey(attdef.Name)) {
                    attributeDecls.Add(attdef.Name, attdef); 
                }
            } 
            foreach (SchemaNotation notation in sinfo.Notations.Values) { 
                if (!Notations.ContainsKey(notation.Name.Name)) {
                    Notations.Add(notation.Name.Name, notation); 
                }
            }

        } 
#endif
 
        internal void Finish() { 
            Dictionary elements = elementDecls;
            for ( int i = 0; i < 2; i++ ) { 
                foreach ( SchemaElementDecl e in elements.Values ) {
                    if ( e.HasNonCDataAttribute ) {
                        hasNonCDataAttributes = true;
                    } 
                    if ( e.DefaultAttDefs != null ) {
                        hasDefaultAttributes = true; 
                    } 
                }
                elements = undeclaredElementDecls; 
            }
        }
//
// IDtdInfo interface 
//
#region IDtdInfo Members 
        bool IDtdInfo.HasDefaultAttributes { 
            get {
                return hasDefaultAttributes; 
            }
        }

        bool IDtdInfo.HasNonCDataAttributes { 
            get {
                return hasNonCDataAttributes; 
            } 
        }
 
        IDtdAttributeListInfo IDtdInfo.LookupAttributeList(string prefix, string localName) {
            XmlQualifiedName qname = new XmlQualifiedName(prefix, localName);
            SchemaElementDecl elementDecl;
            if (!elementDecls.TryGetValue(qname, out elementDecl)) { 
                undeclaredElementDecls.TryGetValue(qname, out elementDecl);
            } 
            return elementDecl; 
        }
 
        IEnumerable IDtdInfo.GetAttributeLists() {
            foreach (SchemaElementDecl elemDecl in elementDecls.Values) {
                IDtdAttributeListInfo eleDeclAsAttList = (IDtdAttributeListInfo)elemDecl;
                yield return eleDeclAsAttList; 
            }
        } 
 
        IDtdEntityInfo IDtdInfo.LookupEntity(string name) {
            if (generalEntities == null) { 
                return null;
            }
            XmlQualifiedName qname = new XmlQualifiedName(name);
            SchemaEntity entity; 
            if (generalEntities.TryGetValue(qname, out entity)) {
                return entity; 
            } 
            return null;
        } 

        XmlQualifiedName IDtdInfo.Name {
            get { return docTypeName; }
        } 

        string IDtdInfo.InternalDtdSubset { 
            get { return internalDtdSubset; } 
        }
#endregion 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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