WebCodeGenerator.cs source code in C# .NET

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Code:

/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Services / Web / System / Web / Services / Description / WebCodeGenerator.cs / 1305376 / WebCodeGenerator.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Services.Description { 
 

    using System; 
    using System.Globalization;
    using System.Collections;
    using System.IO;
    using System.CodeDom; 
    using System.CodeDom.Compiler;
    using System.Diagnostics; 
    using System.Reflection; 
    using System.ComponentModel;
    using System.Xml.Serialization; 
    using System.Threading;
    using System.Web.Services.Protocols;

    internal enum CodeFlags { 
        IsPublic = 0x1,
        IsAbstract = 0x2, 
        IsStruct = 0x4, 
        IsNew = 0x8,
        IsByRef = 0x10, 
        IsOut = 0x20,
        IsInterface = 0x40
    }
 
    internal class WebCodeGenerator {
        private static CodeAttributeDeclaration generatedCodeAttribute; 
        private WebCodeGenerator() {} 

        internal static CodeAttributeDeclaration GeneratedCodeAttribute { 
            get {
                if (generatedCodeAttribute == null) {
                    CodeAttributeDeclaration decl = new CodeAttributeDeclaration(typeof(GeneratedCodeAttribute).FullName);
 
                    Assembly a = Assembly.GetEntryAssembly();
                    if (a == null) { 
                        a = Assembly.GetExecutingAssembly(); 
                        if (a == null) {
                            a = typeof(WebCodeGenerator).Assembly; 
                        }
                    }
                    AssemblyName assemblyName = a.GetName();
                    decl.Arguments.Add(new CodeAttributeArgument(new CodePrimitiveExpression(assemblyName.Name))); 
                    string version = GetProductVersion(a);
                    decl.Arguments.Add(new CodeAttributeArgument(new CodePrimitiveExpression(version == null ? assemblyName.Version.ToString() : version))); 
                    generatedCodeAttribute = decl; 
                }
                return generatedCodeAttribute; 
            }
        }

        private static string GetProductVersion(Assembly assembly) { 
            object[] attributes = assembly.GetCustomAttributes(true);
            for ( int i = 0; i 0)
                    names[name.Substring(0, dot)] = types[i];
            } 
            string[] ns = new string[names.Keys.Count];
            names.Keys.CopyTo(ns, 0); 
            return ns; 
        }
 
        internal static void AddImports(CodeNamespace codeNamespace, string[] namespaces) {
            Debug.Assert(codeNamespace != null, "Inalid (null) CodeNamespace");
            foreach (string ns in namespaces)
                codeNamespace.Imports.Add(new CodeNamespaceImport(ns)); 
        }
 
        static CodeMemberProperty CreatePropertyDeclaration(CodeMemberField field, string name, string typeName) { 
            CodeMemberProperty prop = new CodeMemberProperty();
            prop.Type = new CodeTypeReference(typeName); 
            prop.Name = name;
            //add get
            CodeMethodReturnStatement ret = new CodeMethodReturnStatement();
            ret.Expression = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), field.Name); 
            prop.GetStatements.Add(ret);
 
            CodeExpression left = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), field.Name); 
            CodeExpression right = new CodeArgumentReferenceExpression("value");
            prop.SetStatements.Add(new CodeAssignStatement(left, right)); 
            return prop;
        }

        internal static CodeTypeMember AddMember(CodeTypeDeclaration codeClass, string typeName, string memberName, CodeExpression initializer, CodeAttributeDeclarationCollection metadata, CodeFlags flags, CodeGenerationOptions options) { 
            CodeTypeMember member;
            bool generateProperty = (options & CodeGenerationOptions.GenerateProperties) != 0; 
            string fieldName = generateProperty ? MakeFieldName(memberName) : memberName; 

            CodeMemberField field = new CodeMemberField(typeName, fieldName); 
            field.InitExpression = initializer;

            if (generateProperty) {
                codeClass.Members.Add(field); 
                member = CreatePropertyDeclaration(field, memberName, typeName);
            } 
            else { 
                member = field;
            } 

            member.CustomAttributes = metadata;
            if ((flags & CodeFlags.IsPublic) != 0)
                member.Attributes = (field.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 

            codeClass.Members.Add(member); 
            return member; 
        }
 
        internal static string FullTypeName(XmlMemberMapping mapping, CodeDomProvider codeProvider) {
            return mapping.GenerateTypeName(codeProvider);
        }
 
        static string MakeFieldName(string name) {
            return CodeIdentifier.MakeCamel(name) + "Field"; 
        } 

        internal static CodeConstructor AddConstructor(CodeTypeDeclaration codeClass, string[] parameterTypeNames, string[] parameterNames, CodeAttributeDeclarationCollection metadata, CodeFlags flags) { 
            CodeConstructor ctor = new CodeConstructor();

            if ((flags & CodeFlags.IsPublic) != 0)
                ctor.Attributes = (ctor.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 
            if ((flags & CodeFlags.IsAbstract) != 0)
                ctor.Attributes |= MemberAttributes.Abstract; 
 
            ctor.CustomAttributes = metadata;
 
            Debug.Assert(parameterTypeNames.Length == parameterNames.Length, "invalid set of parameters");
            for (int i = 0; i < parameterTypeNames.Length; i++) {
                CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(parameterTypeNames[i], parameterNames[i]);
                ctor.Parameters.Add(param); 
            }
            codeClass.Members.Add(ctor); 
            return ctor; 
        }
 
        internal static CodeMemberMethod AddMethod(CodeTypeDeclaration codeClass, string methodName,
            CodeFlags[] parameterFlags, string[] parameterTypeNames, string[] parameterNames,
            string returnTypeName, CodeAttributeDeclarationCollection metadata, CodeFlags flags) {
 
            return AddMethod(codeClass, methodName, parameterFlags,
                parameterTypeNames, parameterNames, new CodeAttributeDeclarationCollection[0], 
                returnTypeName, metadata, flags); 
        }
 
        internal static CodeMemberMethod AddMethod(CodeTypeDeclaration codeClass, string methodName,
            CodeFlags[] parameterFlags, string[] parameterTypeNames, string[] parameterNames,
            CodeAttributeDeclarationCollection[] parameterAttributes, string returnTypeName, CodeAttributeDeclarationCollection metadata, CodeFlags flags) {
 
            CodeMemberMethod method = new CodeMemberMethod();
            method.Name = methodName; 
            method.ReturnType = new CodeTypeReference(returnTypeName); 
            method.CustomAttributes = metadata;
 
            if ((flags & CodeFlags.IsPublic) != 0)
                method.Attributes = (method.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public;
            if ((flags & CodeFlags.IsAbstract) != 0)
                method.Attributes = (method.Attributes & ~MemberAttributes.ScopeMask) | MemberAttributes.Abstract; 

            if ((flags & CodeFlags.IsNew) != 0) 
                method.Attributes = (method.Attributes & ~MemberAttributes.VTableMask) | MemberAttributes.New; 

            Debug.Assert(parameterFlags.Length == parameterTypeNames.Length && parameterTypeNames.Length == parameterNames.Length, "invalid set of parameters"); 
            for (int i = 0; i < parameterNames.Length; i++) {
                CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(parameterTypeNames[i], parameterNames[i]);

                if ((parameterFlags[i] & CodeFlags.IsByRef) != 0) 
                    param.Direction = FieldDirection.Ref;
                else if ((parameterFlags[i] & CodeFlags.IsOut) != 0) 
                    param.Direction = FieldDirection.Out; 

                if (i < parameterAttributes.Length) { 
                    param.CustomAttributes = parameterAttributes[i];
                }
                method.Parameters.Add(param);
            } 
            codeClass.Members.Add(method);
            return method; 
        } 

        internal static CodeTypeDeclaration AddClass(CodeNamespace codeNamespace, string className, string baseClassName, string[] implementedInterfaceNames, CodeAttributeDeclarationCollection metadata, CodeFlags flags, bool isPartial) { 
            CodeTypeDeclaration codeClass = CreateClass(className, baseClassName, implementedInterfaceNames, metadata, flags, isPartial);
            codeNamespace.Types.Add(codeClass);
            return codeClass;
        } 

        internal static CodeTypeDeclaration CreateClass(string className, string baseClassName, string[] implementedInterfaceNames, CodeAttributeDeclarationCollection metadata, CodeFlags flags, bool isPartial) { 
            CodeTypeDeclaration codeClass = new CodeTypeDeclaration(className); 

            if (baseClassName != null && baseClassName.Length > 0) 
                codeClass.BaseTypes.Add(baseClassName);
            foreach (string interfaceName in implementedInterfaceNames)
                codeClass.BaseTypes.Add(interfaceName);
            codeClass.IsStruct = (flags & CodeFlags.IsStruct) != 0; 
            if ((flags & CodeFlags.IsPublic) != 0)
                codeClass.TypeAttributes |= TypeAttributes.Public; 
            else 
                codeClass.TypeAttributes &= ~TypeAttributes.Public;
            if ((flags & CodeFlags.IsAbstract) != 0) 
                codeClass.TypeAttributes |= TypeAttributes.Abstract;
            else
                codeClass.TypeAttributes &= ~TypeAttributes.Abstract;
 
            if ((flags & CodeFlags.IsInterface) != 0)
                codeClass.IsInterface = true; 
            else 
                codeClass.IsPartial = isPartial;
 
            codeClass.CustomAttributes = metadata;
            codeClass.CustomAttributes.Add(GeneratedCodeAttribute);
            return codeClass;
        } 

        internal static CodeAttributeDeclarationCollection AddCustomAttribute(CodeAttributeDeclarationCollection metadata, Type type, CodeAttributeArgument[] arguments) { 
            if (metadata == null) metadata = new CodeAttributeDeclarationCollection(); 
            CodeAttributeDeclaration attribute = new CodeAttributeDeclaration(type.FullName, arguments);
            metadata.Add(attribute); 
            return metadata;
        }

        internal static CodeAttributeDeclarationCollection AddCustomAttribute(CodeAttributeDeclarationCollection metadata, Type type, CodeExpression[] arguments) { 
            return AddCustomAttribute(metadata, type, arguments, new string[0], new CodeExpression[0]);
        } 
 
        internal static CodeAttributeDeclarationCollection AddCustomAttribute(CodeAttributeDeclarationCollection metadata, Type type, CodeExpression[] parameters, string[] propNames, CodeExpression[] propValues) {
            Debug.Assert(propNames.Length == propValues.Length, "propNames.Length !=  propValues.Length"); 
            int count = (parameters == null ? 0: parameters.Length) + (propNames == null ? 0 : propNames.Length);
            CodeAttributeArgument[] arguments = new CodeAttributeArgument[count];

            for (int i = 0; i < parameters.Length; i++) 
                arguments[i] = new CodeAttributeArgument(null, parameters[i]);
 
            for (int i = 0; i < propNames.Length; i++) 
                arguments[parameters.Length+i] = new CodeAttributeArgument(propNames[i], propValues[i]);
 
            return AddCustomAttribute(metadata, type, arguments);
        }

        // public event xxxCompletedEventHandler xxxCompleted; 
        internal static void AddEvent(CodeTypeMemberCollection members, string handlerType, string handlerName) {
            CodeMemberEvent eventCompleted = new CodeMemberEvent(); 
            eventCompleted.Type = new CodeTypeReference(handlerType); 
            eventCompleted.Name = handlerName;
            eventCompleted.Attributes = (eventCompleted.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 
            eventCompleted.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            members.Add(eventCompleted);
        }
 
        // public delegate void xxxCompletedEventHandler(object sender, System.ComponentModel.AsyncCompletedEventArgs args);
        internal static void AddDelegate(CodeTypeDeclarationCollection codeClasses, string handlerType, string handlerArgs) { 
            CodeTypeDelegate handler = new CodeTypeDelegate(handlerType); 
            handler.CustomAttributes.Add(GeneratedCodeAttribute);
            handler.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), "sender")); 
            handler.Parameters.Add(new CodeParameterDeclarationExpression(handlerArgs, "e"));
            handler.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            codeClasses.Add(handler);
        } 

        // private SendOrPostCallback xxxOperationCompleted; 
        internal static void AddCallbackDeclaration(CodeTypeMemberCollection members, string callbackMember) { 
            CodeMemberField callback = new CodeMemberField();
            callback.Type = new CodeTypeReference(typeof(SendOrPostCallback)); 
            callback.Name = callbackMember;
            members.Add(callback);
        }
 
        // private void On_xxx_OperationCompleted(object arg) {..}
        internal static void AddCallbackImplementation(CodeTypeDeclaration codeClass, string callbackName, string handlerName, string handlerArgs, bool methodHasOutParameters) { 
            CodeMemberMethod asyncCompleted = WebCodeGenerator.AddMethod(codeClass, callbackName, 
                new CodeFlags[1] {0}, new string[] {typeof(object).FullName}, new string[] {"arg"},
                typeof(void).FullName, null, 0); 

            CodeEventReferenceExpression member = new CodeEventReferenceExpression(new CodeThisReferenceExpression(), handlerName);
            CodeBinaryOperatorExpression checkIfNull = new CodeBinaryOperatorExpression(member, CodeBinaryOperatorType.IdentityInequality, new CodePrimitiveExpression(null));
 
            CodeStatement[] trueStatements = new CodeStatement[2];
            trueStatements[0] = new CodeVariableDeclarationStatement(typeof(InvokeCompletedEventArgs), "invokeArgs", new CodeCastExpression(typeof(InvokeCompletedEventArgs), new CodeArgumentReferenceExpression("arg"))); 
            CodeVariableReferenceExpression invokeArgs = new CodeVariableReferenceExpression("invokeArgs"); 
            CodeObjectCreateExpression create = new CodeObjectCreateExpression();
 
            if (methodHasOutParameters) {
                create.CreateType = new CodeTypeReference(handlerArgs);
                create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "Results"));
            } 
            else {
                create.CreateType = new CodeTypeReference(typeof(AsyncCompletedEventArgs)); 
            } 
            create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "Error"));
            create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "Cancelled")); 
            create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "UserState"));
            trueStatements[1] = new CodeExpressionStatement(new CodeDelegateInvokeExpression(new CodeEventReferenceExpression(new CodeThisReferenceExpression(), handlerName), new CodeExpression[] {new CodeThisReferenceExpression(), create}));

            asyncCompleted.Statements.Add(new CodeConditionStatement(checkIfNull, trueStatements, new CodeStatement[0])); 
        }
 
        internal static CodeMemberMethod AddAsyncMethod(CodeTypeDeclaration codeClass, string methodName, 
            string[] parameterTypeNames, string[] parameterNames, string callbackMember, string callbackName, string userState) {
 
            CodeMemberMethod asyncCodeMethod = WebCodeGenerator.AddMethod(codeClass, methodName,
                new CodeFlags[parameterNames.Length],parameterTypeNames, parameterNames, typeof(void).FullName, null, CodeFlags.IsPublic);

            asyncCodeMethod.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true)); 
            CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression(new CodeThisReferenceExpression(), methodName);
 
            for (int i = 0; i < parameterNames.Length; i++) { 
                invoke.Parameters.Add(new CodeArgumentReferenceExpression(parameterNames[i]));
            } 
            invoke.Parameters.Add(new CodePrimitiveExpression(null));
            asyncCodeMethod.Statements.Add(invoke);

            asyncCodeMethod = WebCodeGenerator.AddMethod(codeClass, methodName, 
                new CodeFlags[parameterNames.Length],parameterTypeNames, parameterNames, typeof(void).FullName, null, CodeFlags.IsPublic);
 
            asyncCodeMethod.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true)); 

            asyncCodeMethod.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), userState)); 

            CodeFieldReferenceExpression member = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), callbackMember);
            CodeBinaryOperatorExpression checkIfNull = new CodeBinaryOperatorExpression(member, CodeBinaryOperatorType.IdentityEquality, new CodePrimitiveExpression(null));
            CodeDelegateCreateExpression createDelegate = new CodeDelegateCreateExpression(); 
            createDelegate.DelegateType = new CodeTypeReference(typeof(SendOrPostCallback));
            createDelegate.TargetObject = new CodeThisReferenceExpression(); 
            createDelegate.MethodName = callbackName; 

            CodeStatement[] trueStatements = new CodeStatement[] {new CodeAssignStatement(member, createDelegate)}; 
            asyncCodeMethod.Statements.Add(new CodeConditionStatement(checkIfNull, trueStatements, new CodeStatement[0]));

            return asyncCodeMethod;
        } 

        internal static CodeTypeDeclaration CreateArgsClass(string name, string[] paramTypes, string[] paramNames, bool isPartial) { 
            CodeTypeDeclaration codeClass = new CodeTypeDeclaration(name); 
            codeClass.CustomAttributes.Add(GeneratedCodeAttribute);
 
            // Add [DebuggerStepThrough]
            codeClass.CustomAttributes.Add(new CodeAttributeDeclaration(typeof(DebuggerStepThroughAttribute).FullName));
            // Add [DesignerCategory("code")]
            codeClass.CustomAttributes.Add(new CodeAttributeDeclaration(typeof(DesignerCategoryAttribute).FullName, new CodeAttributeArgument[] {new CodeAttributeArgument(new CodePrimitiveExpression("code"))})); 

            codeClass.IsPartial = isPartial; 
            codeClass.BaseTypes.Add(new CodeTypeReference(typeof(AsyncCompletedEventArgs))); 

            CodeIdentifiers identifiers = new CodeIdentifiers(); 
            identifiers.AddUnique("Error", "Error");
            identifiers.AddUnique("Cancelled", "Cancelled");
            identifiers.AddUnique("UserState", "UserState");
 
            for (int i = 0; i < paramNames.Length; i++) {
                if (paramNames[i] != null) { 
                    identifiers.AddUnique(paramNames[i], paramNames[i]); 
                }
            } 
            string results = identifiers.AddUnique("results", "results");
            CodeMemberField data = new CodeMemberField(typeof(object[]), results);
            codeClass.Members.Add(data);
 
            CodeConstructor ctor = new CodeConstructor();
            ctor.Attributes = (ctor.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Assembly; 
 
            CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(typeof(object[]), results);
            ctor.Parameters.Add(param); 
            ctor.Parameters.Add(new CodeParameterDeclarationExpression(typeof(Exception), "exception"));
            ctor.Parameters.Add(new CodeParameterDeclarationExpression(typeof(bool), "cancelled"));
            ctor.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), "userState"));
 
            ctor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("exception"));
            ctor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("cancelled")); 
            ctor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("userState")); 

            ctor.Statements.Add(new CodeAssignStatement(new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), data.Name), new CodeArgumentReferenceExpression(results))); 

            codeClass.Members.Add(ctor);

            int index = 0; 
            for (int i = 0; i < paramNames.Length; i++) {
                if (paramNames[i] != null) { 
                    codeClass.Members.Add(CreatePropertyDeclaration(data, paramNames[i], paramTypes[i], index++)); 
                }
            } 
            codeClass.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            return codeClass;
        }
 
        static CodeMemberProperty CreatePropertyDeclaration(CodeMemberField field, string name, string typeName, int index) {
            CodeMemberProperty prop = new CodeMemberProperty(); 
            prop.Type = new CodeTypeReference(typeName); 
            prop.Name = name;
            prop.Attributes = (prop.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 
            //add get
            prop.GetStatements.Add(new CodeMethodInvokeExpression(new CodeThisReferenceExpression(), "RaiseExceptionIfNecessary", new CodeExpression[0]));
            CodeArrayIndexerExpression valueRef = new CodeArrayIndexerExpression();
            valueRef.TargetObject = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), field.Name); 
            valueRef.Indices.Add(new CodePrimitiveExpression(index));
 
            CodeMethodReturnStatement ret = new CodeMethodReturnStatement(); 
            ret.Expression = new CodeCastExpression(typeName, valueRef);
            prop.GetStatements.Add(ret); 

            prop.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            return prop;
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Services.Description { 
 

    using System; 
    using System.Globalization;
    using System.Collections;
    using System.IO;
    using System.CodeDom; 
    using System.CodeDom.Compiler;
    using System.Diagnostics; 
    using System.Reflection; 
    using System.ComponentModel;
    using System.Xml.Serialization; 
    using System.Threading;
    using System.Web.Services.Protocols;

    internal enum CodeFlags { 
        IsPublic = 0x1,
        IsAbstract = 0x2, 
        IsStruct = 0x4, 
        IsNew = 0x8,
        IsByRef = 0x10, 
        IsOut = 0x20,
        IsInterface = 0x40
    }
 
    internal class WebCodeGenerator {
        private static CodeAttributeDeclaration generatedCodeAttribute; 
        private WebCodeGenerator() {} 

        internal static CodeAttributeDeclaration GeneratedCodeAttribute { 
            get {
                if (generatedCodeAttribute == null) {
                    CodeAttributeDeclaration decl = new CodeAttributeDeclaration(typeof(GeneratedCodeAttribute).FullName);
 
                    Assembly a = Assembly.GetEntryAssembly();
                    if (a == null) { 
                        a = Assembly.GetExecutingAssembly(); 
                        if (a == null) {
                            a = typeof(WebCodeGenerator).Assembly; 
                        }
                    }
                    AssemblyName assemblyName = a.GetName();
                    decl.Arguments.Add(new CodeAttributeArgument(new CodePrimitiveExpression(assemblyName.Name))); 
                    string version = GetProductVersion(a);
                    decl.Arguments.Add(new CodeAttributeArgument(new CodePrimitiveExpression(version == null ? assemblyName.Version.ToString() : version))); 
                    generatedCodeAttribute = decl; 
                }
                return generatedCodeAttribute; 
            }
        }

        private static string GetProductVersion(Assembly assembly) { 
            object[] attributes = assembly.GetCustomAttributes(true);
            for ( int i = 0; i 0)
                    names[name.Substring(0, dot)] = types[i];
            } 
            string[] ns = new string[names.Keys.Count];
            names.Keys.CopyTo(ns, 0); 
            return ns; 
        }
 
        internal static void AddImports(CodeNamespace codeNamespace, string[] namespaces) {
            Debug.Assert(codeNamespace != null, "Inalid (null) CodeNamespace");
            foreach (string ns in namespaces)
                codeNamespace.Imports.Add(new CodeNamespaceImport(ns)); 
        }
 
        static CodeMemberProperty CreatePropertyDeclaration(CodeMemberField field, string name, string typeName) { 
            CodeMemberProperty prop = new CodeMemberProperty();
            prop.Type = new CodeTypeReference(typeName); 
            prop.Name = name;
            //add get
            CodeMethodReturnStatement ret = new CodeMethodReturnStatement();
            ret.Expression = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), field.Name); 
            prop.GetStatements.Add(ret);
 
            CodeExpression left = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), field.Name); 
            CodeExpression right = new CodeArgumentReferenceExpression("value");
            prop.SetStatements.Add(new CodeAssignStatement(left, right)); 
            return prop;
        }

        internal static CodeTypeMember AddMember(CodeTypeDeclaration codeClass, string typeName, string memberName, CodeExpression initializer, CodeAttributeDeclarationCollection metadata, CodeFlags flags, CodeGenerationOptions options) { 
            CodeTypeMember member;
            bool generateProperty = (options & CodeGenerationOptions.GenerateProperties) != 0; 
            string fieldName = generateProperty ? MakeFieldName(memberName) : memberName; 

            CodeMemberField field = new CodeMemberField(typeName, fieldName); 
            field.InitExpression = initializer;

            if (generateProperty) {
                codeClass.Members.Add(field); 
                member = CreatePropertyDeclaration(field, memberName, typeName);
            } 
            else { 
                member = field;
            } 

            member.CustomAttributes = metadata;
            if ((flags & CodeFlags.IsPublic) != 0)
                member.Attributes = (field.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 

            codeClass.Members.Add(member); 
            return member; 
        }
 
        internal static string FullTypeName(XmlMemberMapping mapping, CodeDomProvider codeProvider) {
            return mapping.GenerateTypeName(codeProvider);
        }
 
        static string MakeFieldName(string name) {
            return CodeIdentifier.MakeCamel(name) + "Field"; 
        } 

        internal static CodeConstructor AddConstructor(CodeTypeDeclaration codeClass, string[] parameterTypeNames, string[] parameterNames, CodeAttributeDeclarationCollection metadata, CodeFlags flags) { 
            CodeConstructor ctor = new CodeConstructor();

            if ((flags & CodeFlags.IsPublic) != 0)
                ctor.Attributes = (ctor.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 
            if ((flags & CodeFlags.IsAbstract) != 0)
                ctor.Attributes |= MemberAttributes.Abstract; 
 
            ctor.CustomAttributes = metadata;
 
            Debug.Assert(parameterTypeNames.Length == parameterNames.Length, "invalid set of parameters");
            for (int i = 0; i < parameterTypeNames.Length; i++) {
                CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(parameterTypeNames[i], parameterNames[i]);
                ctor.Parameters.Add(param); 
            }
            codeClass.Members.Add(ctor); 
            return ctor; 
        }
 
        internal static CodeMemberMethod AddMethod(CodeTypeDeclaration codeClass, string methodName,
            CodeFlags[] parameterFlags, string[] parameterTypeNames, string[] parameterNames,
            string returnTypeName, CodeAttributeDeclarationCollection metadata, CodeFlags flags) {
 
            return AddMethod(codeClass, methodName, parameterFlags,
                parameterTypeNames, parameterNames, new CodeAttributeDeclarationCollection[0], 
                returnTypeName, metadata, flags); 
        }
 
        internal static CodeMemberMethod AddMethod(CodeTypeDeclaration codeClass, string methodName,
            CodeFlags[] parameterFlags, string[] parameterTypeNames, string[] parameterNames,
            CodeAttributeDeclarationCollection[] parameterAttributes, string returnTypeName, CodeAttributeDeclarationCollection metadata, CodeFlags flags) {
 
            CodeMemberMethod method = new CodeMemberMethod();
            method.Name = methodName; 
            method.ReturnType = new CodeTypeReference(returnTypeName); 
            method.CustomAttributes = metadata;
 
            if ((flags & CodeFlags.IsPublic) != 0)
                method.Attributes = (method.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public;
            if ((flags & CodeFlags.IsAbstract) != 0)
                method.Attributes = (method.Attributes & ~MemberAttributes.ScopeMask) | MemberAttributes.Abstract; 

            if ((flags & CodeFlags.IsNew) != 0) 
                method.Attributes = (method.Attributes & ~MemberAttributes.VTableMask) | MemberAttributes.New; 

            Debug.Assert(parameterFlags.Length == parameterTypeNames.Length && parameterTypeNames.Length == parameterNames.Length, "invalid set of parameters"); 
            for (int i = 0; i < parameterNames.Length; i++) {
                CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(parameterTypeNames[i], parameterNames[i]);

                if ((parameterFlags[i] & CodeFlags.IsByRef) != 0) 
                    param.Direction = FieldDirection.Ref;
                else if ((parameterFlags[i] & CodeFlags.IsOut) != 0) 
                    param.Direction = FieldDirection.Out; 

                if (i < parameterAttributes.Length) { 
                    param.CustomAttributes = parameterAttributes[i];
                }
                method.Parameters.Add(param);
            } 
            codeClass.Members.Add(method);
            return method; 
        } 

        internal static CodeTypeDeclaration AddClass(CodeNamespace codeNamespace, string className, string baseClassName, string[] implementedInterfaceNames, CodeAttributeDeclarationCollection metadata, CodeFlags flags, bool isPartial) { 
            CodeTypeDeclaration codeClass = CreateClass(className, baseClassName, implementedInterfaceNames, metadata, flags, isPartial);
            codeNamespace.Types.Add(codeClass);
            return codeClass;
        } 

        internal static CodeTypeDeclaration CreateClass(string className, string baseClassName, string[] implementedInterfaceNames, CodeAttributeDeclarationCollection metadata, CodeFlags flags, bool isPartial) { 
            CodeTypeDeclaration codeClass = new CodeTypeDeclaration(className); 

            if (baseClassName != null && baseClassName.Length > 0) 
                codeClass.BaseTypes.Add(baseClassName);
            foreach (string interfaceName in implementedInterfaceNames)
                codeClass.BaseTypes.Add(interfaceName);
            codeClass.IsStruct = (flags & CodeFlags.IsStruct) != 0; 
            if ((flags & CodeFlags.IsPublic) != 0)
                codeClass.TypeAttributes |= TypeAttributes.Public; 
            else 
                codeClass.TypeAttributes &= ~TypeAttributes.Public;
            if ((flags & CodeFlags.IsAbstract) != 0) 
                codeClass.TypeAttributes |= TypeAttributes.Abstract;
            else
                codeClass.TypeAttributes &= ~TypeAttributes.Abstract;
 
            if ((flags & CodeFlags.IsInterface) != 0)
                codeClass.IsInterface = true; 
            else 
                codeClass.IsPartial = isPartial;
 
            codeClass.CustomAttributes = metadata;
            codeClass.CustomAttributes.Add(GeneratedCodeAttribute);
            return codeClass;
        } 

        internal static CodeAttributeDeclarationCollection AddCustomAttribute(CodeAttributeDeclarationCollection metadata, Type type, CodeAttributeArgument[] arguments) { 
            if (metadata == null) metadata = new CodeAttributeDeclarationCollection(); 
            CodeAttributeDeclaration attribute = new CodeAttributeDeclaration(type.FullName, arguments);
            metadata.Add(attribute); 
            return metadata;
        }

        internal static CodeAttributeDeclarationCollection AddCustomAttribute(CodeAttributeDeclarationCollection metadata, Type type, CodeExpression[] arguments) { 
            return AddCustomAttribute(metadata, type, arguments, new string[0], new CodeExpression[0]);
        } 
 
        internal static CodeAttributeDeclarationCollection AddCustomAttribute(CodeAttributeDeclarationCollection metadata, Type type, CodeExpression[] parameters, string[] propNames, CodeExpression[] propValues) {
            Debug.Assert(propNames.Length == propValues.Length, "propNames.Length !=  propValues.Length"); 
            int count = (parameters == null ? 0: parameters.Length) + (propNames == null ? 0 : propNames.Length);
            CodeAttributeArgument[] arguments = new CodeAttributeArgument[count];

            for (int i = 0; i < parameters.Length; i++) 
                arguments[i] = new CodeAttributeArgument(null, parameters[i]);
 
            for (int i = 0; i < propNames.Length; i++) 
                arguments[parameters.Length+i] = new CodeAttributeArgument(propNames[i], propValues[i]);
 
            return AddCustomAttribute(metadata, type, arguments);
        }

        // public event xxxCompletedEventHandler xxxCompleted; 
        internal static void AddEvent(CodeTypeMemberCollection members, string handlerType, string handlerName) {
            CodeMemberEvent eventCompleted = new CodeMemberEvent(); 
            eventCompleted.Type = new CodeTypeReference(handlerType); 
            eventCompleted.Name = handlerName;
            eventCompleted.Attributes = (eventCompleted.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 
            eventCompleted.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            members.Add(eventCompleted);
        }
 
        // public delegate void xxxCompletedEventHandler(object sender, System.ComponentModel.AsyncCompletedEventArgs args);
        internal static void AddDelegate(CodeTypeDeclarationCollection codeClasses, string handlerType, string handlerArgs) { 
            CodeTypeDelegate handler = new CodeTypeDelegate(handlerType); 
            handler.CustomAttributes.Add(GeneratedCodeAttribute);
            handler.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), "sender")); 
            handler.Parameters.Add(new CodeParameterDeclarationExpression(handlerArgs, "e"));
            handler.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            codeClasses.Add(handler);
        } 

        // private SendOrPostCallback xxxOperationCompleted; 
        internal static void AddCallbackDeclaration(CodeTypeMemberCollection members, string callbackMember) { 
            CodeMemberField callback = new CodeMemberField();
            callback.Type = new CodeTypeReference(typeof(SendOrPostCallback)); 
            callback.Name = callbackMember;
            members.Add(callback);
        }
 
        // private void On_xxx_OperationCompleted(object arg) {..}
        internal static void AddCallbackImplementation(CodeTypeDeclaration codeClass, string callbackName, string handlerName, string handlerArgs, bool methodHasOutParameters) { 
            CodeMemberMethod asyncCompleted = WebCodeGenerator.AddMethod(codeClass, callbackName, 
                new CodeFlags[1] {0}, new string[] {typeof(object).FullName}, new string[] {"arg"},
                typeof(void).FullName, null, 0); 

            CodeEventReferenceExpression member = new CodeEventReferenceExpression(new CodeThisReferenceExpression(), handlerName);
            CodeBinaryOperatorExpression checkIfNull = new CodeBinaryOperatorExpression(member, CodeBinaryOperatorType.IdentityInequality, new CodePrimitiveExpression(null));
 
            CodeStatement[] trueStatements = new CodeStatement[2];
            trueStatements[0] = new CodeVariableDeclarationStatement(typeof(InvokeCompletedEventArgs), "invokeArgs", new CodeCastExpression(typeof(InvokeCompletedEventArgs), new CodeArgumentReferenceExpression("arg"))); 
            CodeVariableReferenceExpression invokeArgs = new CodeVariableReferenceExpression("invokeArgs"); 
            CodeObjectCreateExpression create = new CodeObjectCreateExpression();
 
            if (methodHasOutParameters) {
                create.CreateType = new CodeTypeReference(handlerArgs);
                create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "Results"));
            } 
            else {
                create.CreateType = new CodeTypeReference(typeof(AsyncCompletedEventArgs)); 
            } 
            create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "Error"));
            create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "Cancelled")); 
            create.Parameters.Add(new CodePropertyReferenceExpression(invokeArgs, "UserState"));
            trueStatements[1] = new CodeExpressionStatement(new CodeDelegateInvokeExpression(new CodeEventReferenceExpression(new CodeThisReferenceExpression(), handlerName), new CodeExpression[] {new CodeThisReferenceExpression(), create}));

            asyncCompleted.Statements.Add(new CodeConditionStatement(checkIfNull, trueStatements, new CodeStatement[0])); 
        }
 
        internal static CodeMemberMethod AddAsyncMethod(CodeTypeDeclaration codeClass, string methodName, 
            string[] parameterTypeNames, string[] parameterNames, string callbackMember, string callbackName, string userState) {
 
            CodeMemberMethod asyncCodeMethod = WebCodeGenerator.AddMethod(codeClass, methodName,
                new CodeFlags[parameterNames.Length],parameterTypeNames, parameterNames, typeof(void).FullName, null, CodeFlags.IsPublic);

            asyncCodeMethod.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true)); 
            CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression(new CodeThisReferenceExpression(), methodName);
 
            for (int i = 0; i < parameterNames.Length; i++) { 
                invoke.Parameters.Add(new CodeArgumentReferenceExpression(parameterNames[i]));
            } 
            invoke.Parameters.Add(new CodePrimitiveExpression(null));
            asyncCodeMethod.Statements.Add(invoke);

            asyncCodeMethod = WebCodeGenerator.AddMethod(codeClass, methodName, 
                new CodeFlags[parameterNames.Length],parameterTypeNames, parameterNames, typeof(void).FullName, null, CodeFlags.IsPublic);
 
            asyncCodeMethod.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true)); 

            asyncCodeMethod.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), userState)); 

            CodeFieldReferenceExpression member = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), callbackMember);
            CodeBinaryOperatorExpression checkIfNull = new CodeBinaryOperatorExpression(member, CodeBinaryOperatorType.IdentityEquality, new CodePrimitiveExpression(null));
            CodeDelegateCreateExpression createDelegate = new CodeDelegateCreateExpression(); 
            createDelegate.DelegateType = new CodeTypeReference(typeof(SendOrPostCallback));
            createDelegate.TargetObject = new CodeThisReferenceExpression(); 
            createDelegate.MethodName = callbackName; 

            CodeStatement[] trueStatements = new CodeStatement[] {new CodeAssignStatement(member, createDelegate)}; 
            asyncCodeMethod.Statements.Add(new CodeConditionStatement(checkIfNull, trueStatements, new CodeStatement[0]));

            return asyncCodeMethod;
        } 

        internal static CodeTypeDeclaration CreateArgsClass(string name, string[] paramTypes, string[] paramNames, bool isPartial) { 
            CodeTypeDeclaration codeClass = new CodeTypeDeclaration(name); 
            codeClass.CustomAttributes.Add(GeneratedCodeAttribute);
 
            // Add [DebuggerStepThrough]
            codeClass.CustomAttributes.Add(new CodeAttributeDeclaration(typeof(DebuggerStepThroughAttribute).FullName));
            // Add [DesignerCategory("code")]
            codeClass.CustomAttributes.Add(new CodeAttributeDeclaration(typeof(DesignerCategoryAttribute).FullName, new CodeAttributeArgument[] {new CodeAttributeArgument(new CodePrimitiveExpression("code"))})); 

            codeClass.IsPartial = isPartial; 
            codeClass.BaseTypes.Add(new CodeTypeReference(typeof(AsyncCompletedEventArgs))); 

            CodeIdentifiers identifiers = new CodeIdentifiers(); 
            identifiers.AddUnique("Error", "Error");
            identifiers.AddUnique("Cancelled", "Cancelled");
            identifiers.AddUnique("UserState", "UserState");
 
            for (int i = 0; i < paramNames.Length; i++) {
                if (paramNames[i] != null) { 
                    identifiers.AddUnique(paramNames[i], paramNames[i]); 
                }
            } 
            string results = identifiers.AddUnique("results", "results");
            CodeMemberField data = new CodeMemberField(typeof(object[]), results);
            codeClass.Members.Add(data);
 
            CodeConstructor ctor = new CodeConstructor();
            ctor.Attributes = (ctor.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Assembly; 
 
            CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(typeof(object[]), results);
            ctor.Parameters.Add(param); 
            ctor.Parameters.Add(new CodeParameterDeclarationExpression(typeof(Exception), "exception"));
            ctor.Parameters.Add(new CodeParameterDeclarationExpression(typeof(bool), "cancelled"));
            ctor.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), "userState"));
 
            ctor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("exception"));
            ctor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("cancelled")); 
            ctor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("userState")); 

            ctor.Statements.Add(new CodeAssignStatement(new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), data.Name), new CodeArgumentReferenceExpression(results))); 

            codeClass.Members.Add(ctor);

            int index = 0; 
            for (int i = 0; i < paramNames.Length; i++) {
                if (paramNames[i] != null) { 
                    codeClass.Members.Add(CreatePropertyDeclaration(data, paramNames[i], paramTypes[i], index++)); 
                }
            } 
            codeClass.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            return codeClass;
        }
 
        static CodeMemberProperty CreatePropertyDeclaration(CodeMemberField field, string name, string typeName, int index) {
            CodeMemberProperty prop = new CodeMemberProperty(); 
            prop.Type = new CodeTypeReference(typeName); 
            prop.Name = name;
            prop.Attributes = (prop.Attributes & ~MemberAttributes.AccessMask) | MemberAttributes.Public; 
            //add get
            prop.GetStatements.Add(new CodeMethodInvokeExpression(new CodeThisReferenceExpression(), "RaiseExceptionIfNecessary", new CodeExpression[0]));
            CodeArrayIndexerExpression valueRef = new CodeArrayIndexerExpression();
            valueRef.TargetObject = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), field.Name); 
            valueRef.Indices.Add(new CodePrimitiveExpression(index));
 
            CodeMethodReturnStatement ret = new CodeMethodReturnStatement(); 
            ret.Expression = new CodeCastExpression(typeName, valueRef);
            prop.GetStatements.Add(ret); 

            prop.Comments.Add(new CodeCommentStatement(Res.GetString(Res.CodeRemarks), true));
            return prop;
        } 
    }
} 

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

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