Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / Serializer / MarkupExtensionSerializer.cs / 1305376 / MarkupExtensionSerializer.cs
namespace System.Workflow.ComponentModel.Serialization { using System; using System.Xml; using System.Reflection; using System.Workflow.ComponentModel.Design; using System.ComponentModel.Design.Serialization; using System.Text; using System.Diagnostics; using System.ComponentModel; using System.Collections.Generic; // This is called BindMarkupSerializer, but the implementation can be used for a general MarkupExtensionSerializer. // The syntax for the serialization conforms to XAML's markup extension. #region Class MarkupExtensionSerializer internal class MarkupExtensionSerializer : WorkflowMarkupSerializer { private const string CompactFormatPropertySeperator = ","; private const string CompactFormatTypeSeperator = " "; private const string CompactFormatNameValueSeperator = "="; private const string CompactFormatStart = "{"; private const string CompactFormatEnd = "}"; private const string CompactFormatCharacters = "=,\"\'{}\\"; protected internal sealed override bool CanSerializeToString(WorkflowMarkupSerializationManager serializationManager, object value) { return true; } protected internal sealed override string SerializeToString(WorkflowMarkupSerializationManager serializationManager, object value) { if (serializationManager == null) throw new ArgumentNullException("serializationManager"); XmlWriter writer = serializationManager.WorkflowMarkupStack[typeof(XmlWriter)] as XmlWriter; if (writer == null) throw new ArgumentNullException("writer"); if (value == null) throw new ArgumentNullException("value"); writer.WriteString(MarkupExtensionSerializer.CompactFormatStart); string prefix = String.Empty; XmlQualifiedName qualifiedName = serializationManager.GetXmlQualifiedName(value.GetType(), out prefix); writer.WriteQualifiedName(qualifiedName.Name, qualifiedName.Namespace); int index = 0; DictionaryconstructorArguments = null; InstanceDescriptor instanceDescriptor = this.GetInstanceDescriptor(serializationManager, value); if (instanceDescriptor != null) { ConstructorInfo ctorInfo = instanceDescriptor.MemberInfo as ConstructorInfo; if (ctorInfo != null) { ParameterInfo[] parameters = ctorInfo.GetParameters(); if (parameters != null && parameters.Length == instanceDescriptor.Arguments.Count) { int i = 0; foreach (object argValue in instanceDescriptor.Arguments) { if (constructorArguments == null) constructorArguments = new Dictionary (); // if (argValue == null) continue; constructorArguments.Add(parameters[i].Name, parameters[i++].Name); if (index++ > 0) writer.WriteString(MarkupExtensionSerializer.CompactFormatPropertySeperator); else writer.WriteString(MarkupExtensionSerializer.CompactFormatTypeSeperator); if (argValue.GetType() == typeof(string)) { writer.WriteString(CreateEscapedValue(argValue as string)); } else if (argValue is System.Type) { Type argType = argValue as Type; if (argType.Assembly != null) { string typePrefix = String.Empty; XmlQualifiedName typeQualifiedName = serializationManager.GetXmlQualifiedName(argType, out typePrefix); writer.WriteQualifiedName(XmlConvert.EncodeName(typeQualifiedName.Name), typeQualifiedName.Namespace); } else { writer.WriteString(argType.FullName); } } else { string stringValue = base.SerializeToString(serializationManager, argValue); if (stringValue != null) writer.WriteString(stringValue); } } } } } List properties = new List (); properties.AddRange(GetProperties(serializationManager, value)); properties.AddRange(serializationManager.GetExtendedProperties(value)); foreach (PropertyInfo serializableProperty in properties) { if (Helpers.GetSerializationVisibility(serializableProperty) != DesignerSerializationVisibility.Hidden && serializableProperty.CanRead && serializableProperty.GetValue(value, null) != null) { WorkflowMarkupSerializer propSerializer = serializationManager.GetSerializer(serializableProperty.PropertyType, typeof(WorkflowMarkupSerializer)) as WorkflowMarkupSerializer; if (propSerializer == null) { serializationManager.ReportError(new WorkflowMarkupSerializationException(SR.GetString(SR.Error_SerializerNotAvailable, serializableProperty.PropertyType.FullName))); continue; } if (constructorArguments != null) { object[] attributes = serializableProperty.GetCustomAttributes(typeof(ConstructorArgumentAttribute), false); if (attributes.Length > 0 && constructorArguments.ContainsKey((attributes[0] as ConstructorArgumentAttribute).ArgumentName)) // Skip this property, it has already been represented by a constructor parameter continue; } //Get the property serializer so that we can convert the bind object to string serializationManager.Context.Push(serializableProperty); try { object propValue = serializableProperty.GetValue(value, null); if (propSerializer.ShouldSerializeValue(serializationManager, propValue)) { //We do not allow nested bind syntax if (propSerializer.CanSerializeToString(serializationManager, propValue)) { if (index++ > 0) writer.WriteString(MarkupExtensionSerializer.CompactFormatPropertySeperator); else writer.WriteString(MarkupExtensionSerializer.CompactFormatTypeSeperator); writer.WriteString(serializableProperty.Name); writer.WriteString(MarkupExtensionSerializer.CompactFormatNameValueSeperator); if (propValue.GetType() == typeof(string)) { writer.WriteString(CreateEscapedValue(propValue as string)); } else { string stringValue = propSerializer.SerializeToString(serializationManager, propValue); if (stringValue != null) writer.WriteString(stringValue); } } else { serializationManager.ReportError(new WorkflowMarkupSerializationException(SR.GetString(SR.Error_SerializerNoSerializeLogic, new object[] { serializableProperty.Name, value.GetType().FullName }))); } } } catch { serializationManager.ReportError(new WorkflowMarkupSerializationException(SR.GetString(SR.Error_SerializerNoSerializeLogic, new object[] { serializableProperty.Name, value.GetType().FullName }))); continue; } finally { Debug.Assert((PropertyInfo)serializationManager.Context.Current == serializableProperty, "Serializer did not remove an object it pushed into stack."); serializationManager.Context.Pop(); } } } writer.WriteString(MarkupExtensionSerializer.CompactFormatEnd); return string.Empty; } protected virtual InstanceDescriptor GetInstanceDescriptor(WorkflowMarkupSerializationManager serializationManager, object value) { MarkupExtension markupExtension = value as MarkupExtension; if (markupExtension == null) throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(MarkupExtension).FullName), "value"); return new InstanceDescriptor(markupExtension.GetType().GetConstructor(new Type[0]), null); } // more escaped characters can be consider here, hence a seperate fn instead of string.Replace private string CreateEscapedValue(string value) { if (value == null) throw new ArgumentNullException("value"); StringBuilder sb = new StringBuilder(64); int length = value.Length; for (int i = 0; i < length; i++) { if (MarkupExtensionSerializer.CompactFormatCharacters.IndexOf(value[i]) != -1) sb.Append("\\"); sb.Append(value[i]); } return sb.ToString(); } } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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