basevalidator.cs source code in C# .NET

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

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml.Schema { 

    using System.IO; 
    using System.Diagnostics;
    using System.Xml;
    using System.Text;
    using System.Collections; 

#pragma warning disable 618 
 
    internal class BaseValidator {
        XmlSchemaCollection schemaCollection; 
        IValidationEventHandling eventHandling;
        XmlNameTable nameTable;
        SchemaNames schemaNames;
        PositionInfo positionInfo; 
        XmlResolver xmlResolver;
        Uri baseUri; 
 
        protected SchemaInfo schemaInfo;
        protected XmlValidatingReaderImpl reader; 
        protected XmlQualifiedName elementName;
        protected ValidationState context;
        protected StringBuilder    textValue;
        protected string           textString; 
        protected bool             hasSibling;
        protected bool             checkDatatype; 
 
        public BaseValidator(BaseValidator other) {
            reader = other.reader; 
            schemaCollection = other.schemaCollection;
            eventHandling = other.eventHandling;
            nameTable = other.nameTable;
            schemaNames = other.schemaNames; 
            positionInfo = other.positionInfo;
            xmlResolver = other.xmlResolver; 
            baseUri = other.baseUri; 
            elementName = other.elementName;
        } 

        public BaseValidator(XmlValidatingReaderImpl reader, XmlSchemaCollection schemaCollection, IValidationEventHandling eventHandling) {
            Debug.Assert(schemaCollection == null || schemaCollection.NameTable == reader.NameTable);
            this.reader = reader; 
            this.schemaCollection = schemaCollection;
            this.eventHandling = eventHandling; 
            nameTable = reader.NameTable; 
            positionInfo = PositionInfo.GetPositionInfo(reader);
            elementName = new XmlQualifiedName(); 
        }

        public XmlValidatingReaderImpl Reader {
            get { return reader; } 
        }
 
        public XmlSchemaCollection SchemaCollection { 
            get { return schemaCollection; }
        } 

        public XmlNameTable NameTable {
            get { return nameTable; }
        } 

        public SchemaNames SchemaNames { 
            get { 
                if (schemaNames != null) {
                    return schemaNames; 
                }
                if (schemaCollection != null) {
                    schemaNames = schemaCollection.GetSchemaNames(nameTable);
                } 
                else {
                    schemaNames = new SchemaNames(nameTable); 
                } 
                return schemaNames;
            } 
        }

        public PositionInfo PositionInfo {
            get { return positionInfo; } 
        }
 
        public XmlResolver XmlResolver { 
            get { return xmlResolver; }
            set { xmlResolver = value; } 
        }

        public Uri BaseUri {
            get { return baseUri; } 
            set { baseUri = value; }
        } 
 
        public ValidationEventHandler EventHandler {
            get { return (ValidationEventHandler)eventHandling.EventHandler; } 
        }

        public SchemaInfo SchemaInfo {
            get { 
                return schemaInfo;
            } 
            set { 
                schemaInfo = value;
            } 
        }

        public IDtdInfo DtdInfo {
            get { 
                return schemaInfo;
            } 
            set { 
                SchemaInfo tmpSchemaInfo  = value as SchemaInfo;
                if (tmpSchemaInfo == null) { 
                    throw new XmlException(Res.Xml_InternalError, string.Empty);
                }
                this.schemaInfo = tmpSchemaInfo;
            } 
        }
 
        public virtual bool PreserveWhitespace { 
            get {
                return false; 
            }
        }

        public virtual void Validate() { 
        }
 
        public virtual void CompleteValidation() { 
        }
 
        public virtual object  FindId(string name) {
            return null;
        }
 
        public void ValidateText() {
            if (context.NeedValidateChildren) { 
                if (context.IsNill) { 
                    SendValidationEvent(Res.Sch_ContentInNill, XmlSchemaValidator.QNameString(context.LocalName, context.Namespace));
                    return; 
                }
                ContentValidator contentValidator = context.ElementDecl.ContentValidator;
                XmlSchemaContentType contentType = contentValidator.ContentType;
                if (contentType == XmlSchemaContentType.ElementOnly) { 
                    ArrayList names = contentValidator.ExpectedElements(context, false);
                    if (names == null) { 
                        SendValidationEvent(Res.Sch_InvalidTextInElement, XmlSchemaValidator.BuildElementName(context.LocalName, context.Namespace)); 
                    }
                    else { 
                        Debug.Assert(names.Count > 0);
                        SendValidationEvent(Res.Sch_InvalidTextInElementExpecting, new string[] { XmlSchemaValidator.BuildElementName(context.LocalName, context.Namespace), XmlSchemaValidator.PrintExpectedElements(names, false) });
                    }
                } 
                else if (contentType == XmlSchemaContentType.Empty) {
                    SendValidationEvent(Res.Sch_InvalidTextInEmpty, string.Empty); 
                } 
                if (checkDatatype) {
                    SaveTextValue(reader.Value); 
                }
            }
        }
 
        public void ValidateWhitespace() {
            if (context.NeedValidateChildren) { 
                XmlSchemaContentType contentType = context.ElementDecl.ContentValidator.ContentType; 
                if (context.IsNill) {
                    SendValidationEvent(Res.Sch_ContentInNill, XmlSchemaValidator.QNameString(context.LocalName, context.Namespace)); 
                }
                if (contentType == XmlSchemaContentType.Empty) {
                    SendValidationEvent(Res.Sch_InvalidWhitespaceInEmpty, string.Empty);
                } 
                if (checkDatatype) {
                    SaveTextValue(reader.Value); 
                } 
            }
        } 

        private void SaveTextValue(string value) {
            if (textString.Length == 0) {
                textString = value; 
            }
            else { 
                if (!hasSibling) { 
                    textValue.Append(textString);
                    hasSibling = true; 
                }
                textValue.Append(value);
            }
        } 

        protected void SendValidationEvent(string code) { 
            SendValidationEvent(code, string.Empty); 
        }
 
        protected void SendValidationEvent(string code, string[] args) {
            SendValidationEvent(new XmlSchemaException(code, args, reader.BaseURI, positionInfo.LineNumber, positionInfo.LinePosition));
        }
 
        protected void SendValidationEvent(string code, string arg) {
            SendValidationEvent(new XmlSchemaException(code, arg, reader.BaseURI, positionInfo.LineNumber, positionInfo.LinePosition)); 
        } 

        protected void SendValidationEvent(string code, string arg1, string arg2) { 
            SendValidationEvent(new XmlSchemaException(code, new string[] { arg1, arg2 }, reader.BaseURI, positionInfo.LineNumber, positionInfo.LinePosition));
        }

        protected void SendValidationEvent(XmlSchemaException e) { 
            SendValidationEvent(e, XmlSeverityType.Error);
        } 
 
        protected void SendValidationEvent(string code, string msg, XmlSeverityType severity) {
            SendValidationEvent(new XmlSchemaException(code, msg, reader.BaseURI, positionInfo.LineNumber, positionInfo.LinePosition), severity); 
        }

        protected void SendValidationEvent(string code, string[] args, XmlSeverityType severity) {
            SendValidationEvent(new XmlSchemaException(code, args, reader.BaseURI, positionInfo.LineNumber, positionInfo.LinePosition), severity); 
        }
 
        protected void SendValidationEvent(XmlSchemaException e, XmlSeverityType severity) { 
            if (eventHandling != null) {
                eventHandling.SendEvent(e, severity); 
            }
            else if (severity == XmlSeverityType.Error) {
                throw e;
            } 
        }
 
        protected static void ProcessEntity(SchemaInfo sinfo, string name, object sender, ValidationEventHandler eventhandler, string baseUri, int lineNumber, int linePosition) { 
            SchemaEntity en;
            XmlSchemaException e = null; 
            if (!sinfo.GeneralEntities.TryGetValue(new XmlQualifiedName(name), out en)) {
                // validation error, see xml spec [68]
                e = new XmlSchemaException(Res.Sch_UndeclaredEntity, name, baseUri, lineNumber, linePosition);
            } 
            else if (en.NData.IsEmpty) {
                e = new XmlSchemaException(Res.Sch_UnparsedEntityRef, name, baseUri, lineNumber, linePosition); 
            } 
            if (e != null) {
                if (eventhandler != null) { 
                    eventhandler(sender, new ValidationEventArgs(e));
                }
                else {
                    throw e; 
                }
            } 
        } 

        protected static void ProcessEntity(SchemaInfo sinfo, string name, IValidationEventHandling eventHandling, string baseUriStr, int lineNumber, int linePosition) { 
            SchemaEntity en;
            string errorResId = null;
            if (!sinfo.GeneralEntities.TryGetValue(new XmlQualifiedName(name), out en)) {
                // validation error, see xml spec [68] 
                errorResId = Res.Sch_UndeclaredEntity;
 
            } 
            else if (en.NData.IsEmpty) {
                errorResId = Res.Sch_UnparsedEntityRef; 
            }
            if (errorResId != null) {
                XmlSchemaException e = new XmlSchemaException(errorResId, name, baseUriStr, lineNumber, linePosition);
 
                if (eventHandling != null) {
                    eventHandling.SendEvent(e, XmlSeverityType.Error); 
                } 
                else {
                    throw e; 
                }
            }
        }
 
        public static BaseValidator CreateInstance(ValidationType valType, XmlValidatingReaderImpl reader, XmlSchemaCollection schemaCollection, IValidationEventHandling eventHandling, bool processIdentityConstraints) {
            switch(valType) { 
                case ValidationType.XDR: 
                    return new XdrValidator(reader, schemaCollection, eventHandling);
 
                case ValidationType.Schema:
                    return new XsdValidator(reader, schemaCollection, eventHandling);

                case ValidationType.DTD: 
                    return new DtdValidator(reader, eventHandling, processIdentityConstraints);
 
                case ValidationType.Auto: 
                    return new AutoValidator(reader, schemaCollection, eventHandling);
 
                case ValidationType.None:
                    return new BaseValidator(reader, schemaCollection, eventHandling);

                default: 
                        break;
            } 
            return null; 
        }
 
    }
#pragma warning restore 618

} 

 

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

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