280 lines
12 KiB
C#
280 lines
12 KiB
C#
// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
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// WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
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// THE ENTIRE RISK OF USE OR RESULTS IN CONNECTION WITH THE USE OF THIS CODE
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// AND INFORMATION REMAINS WITH THE USER.
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/*********************************************************************
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* NOTE: A copy of this file exists at: WF\Activities\Common
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* The two files must be kept in sync. Any change made here must also
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* be made to WF\Activities\Common\ValidationHelpers.cs
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*********************************************************************/
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namespace System.Workflow.ComponentModel.Compiler
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{
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#region Imports
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using System;
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using System.Diagnostics;
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using System.Collections;
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using System.Collections.Generic;
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using System.Reflection;
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using System.CodeDom.Compiler;
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using System.Workflow.ComponentModel.Design;
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using System.Workflow.ComponentModel.Compiler;
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using System.Collections.Specialized;
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using System.ComponentModel.Design.Serialization;
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#endregion
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internal static class ValidationHelpers
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{
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#region Validation & helpers for ID and Type
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internal static void ValidateIdentifier(IServiceProvider serviceProvider, string identifier)
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{
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if (serviceProvider == null)
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throw new ArgumentNullException("serviceProvider");
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SupportedLanguages language = CompilerHelpers.GetSupportedLanguage(serviceProvider);
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CodeDomProvider provider = CompilerHelpers.GetCodeDomProvider(language);
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if (language == SupportedLanguages.CSharp && identifier.StartsWith("@", StringComparison.Ordinal) ||
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language == SupportedLanguages.VB && identifier.StartsWith("[", StringComparison.Ordinal) && identifier.EndsWith("]", StringComparison.Ordinal) ||
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!provider.IsValidIdentifier(identifier))
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{
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throw new Exception(SR.GetString(SR.Error_InvalidLanguageIdentifier, identifier));
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}
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}
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internal static ValidationError ValidateIdentifier(string propName, IServiceProvider context, string identifier)
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{
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if (context == null)
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throw new ArgumentNullException("context");
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ValidationError error = null;
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if (identifier == null || identifier.Length == 0)
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error = new ValidationError(SR.GetString(SR.Error_PropertyNotSet, propName), ErrorNumbers.Error_PropertyNotSet);
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else
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{
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try
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{
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ValidationHelpers.ValidateIdentifier(context, identifier);
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}
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catch (Exception e)
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{
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error = new ValidationError(SR.GetString(SR.Error_InvalidIdentifier, propName, e.Message), ErrorNumbers.Error_InvalidIdentifier);
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}
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}
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if (error != null)
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error.PropertyName = propName;
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return error;
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}
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internal static ValidationError ValidateNameProperty(string propName, IServiceProvider context, string identifier)
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{
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if (context == null)
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throw new ArgumentNullException("context");
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ValidationError error = null;
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if (identifier == null || identifier.Length == 0)
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error = new ValidationError(SR.GetString(SR.Error_PropertyNotSet, propName), ErrorNumbers.Error_PropertyNotSet);
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else
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{
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SupportedLanguages language = CompilerHelpers.GetSupportedLanguage(context);
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CodeDomProvider provider = CompilerHelpers.GetCodeDomProvider(language);
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if (language == SupportedLanguages.CSharp && identifier.StartsWith("@", StringComparison.Ordinal) ||
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language == SupportedLanguages.VB && identifier.StartsWith("[", StringComparison.Ordinal) && identifier.EndsWith("]", StringComparison.Ordinal) ||
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!provider.IsValidIdentifier(provider.CreateEscapedIdentifier(identifier)))
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{
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error = new ValidationError(SR.GetString(SR.Error_InvalidIdentifier, propName, SR.GetString(SR.Error_InvalidLanguageIdentifier, identifier)), ErrorNumbers.Error_InvalidIdentifier);
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}
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}
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if (error != null)
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error.PropertyName = propName;
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return error;
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}
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internal static ValidationErrorCollection ValidateUniqueIdentifiers(Activity rootActivity)
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{
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if (rootActivity == null)
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throw new ArgumentNullException("rootActivity");
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Hashtable identifiers = new Hashtable();
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ValidationErrorCollection validationErrors = new ValidationErrorCollection();
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Queue activities = new Queue();
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activities.Enqueue(rootActivity);
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while (activities.Count > 0)
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{
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Activity activity = (Activity)activities.Dequeue();
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if (activity.Enabled)
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{
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if (identifiers.ContainsKey(activity.QualifiedName))
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{
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ValidationError duplicateError = new ValidationError(SR.GetString(SR.Error_DuplicatedActivityID, activity.QualifiedName), ErrorNumbers.Error_DuplicatedActivityID);
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duplicateError.PropertyName = "Name";
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duplicateError.UserData[typeof(Activity)] = activity;
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validationErrors.Add(duplicateError);
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}
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else
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identifiers.Add(activity.QualifiedName, activity);
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if (activity is CompositeActivity && ((activity.Parent == null) || !Helpers.IsCustomActivity(activity as CompositeActivity)))
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{
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foreach (Activity child in Helpers.GetAllEnabledActivities((CompositeActivity)activity))
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activities.Enqueue(child);
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}
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}
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}
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return validationErrors;
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}
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#endregion
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#region Validation for Activity Ref order
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internal static bool IsActivitySourceInOrder(Activity request, Activity response)
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{
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if (request.Parent == null)
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return true;
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List<Activity> responsePath = new List<Activity>();
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responsePath.Add(response);
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Activity responseParent = response is CompositeActivity ? (CompositeActivity)response : response.Parent;
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while (responseParent != null)
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{
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responsePath.Add(responseParent);
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responseParent = responseParent.Parent;
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}
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Activity requestChild = request;
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CompositeActivity requestParent = request is CompositeActivity ? (CompositeActivity)request : request.Parent;
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while (requestParent != null && !responsePath.Contains(requestParent))
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{
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requestChild = requestParent;
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requestParent = requestParent.Parent;
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}
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if (requestParent == requestChild)
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return true;
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bool incorrectOrder = false;
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int index = (responsePath.IndexOf(requestParent) - 1);
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index = (index < 0) ? 0 : index; //sometimes parent gets added to the collection twice which causes index to be -1
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Activity responseChild = responsePath[index];
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if (requestParent == null || Helpers.IsAlternateFlowActivity(requestChild) || Helpers.IsAlternateFlowActivity(responseChild))
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incorrectOrder = true;
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else
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{
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for (int i = 0; i < requestParent.EnabledActivities.Count; i++)
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{
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if (requestParent.EnabledActivities[i] == requestChild)
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break;
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else if (requestParent.EnabledActivities[i] == responseChild)
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{
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incorrectOrder = true;
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break;
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}
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}
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}
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return !incorrectOrder;
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}
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#endregion
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internal static ValidationErrorCollection ValidateObject(ValidationManager manager, object obj)
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{
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ValidationErrorCollection errors = new ValidationErrorCollection();
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if (obj == null)
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return errors;
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Type objType = obj.GetType();
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if (!objType.IsPrimitive && (objType != typeof(string)))
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{
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bool removeValidatedObjectCollection = false;
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Dictionary<int, object> validatedObjects = manager.Context[typeof(Dictionary<int, object>)] as Dictionary<int, object>;
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if (validatedObjects == null)
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{
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validatedObjects = new Dictionary<int, object>();
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manager.Context.Push(validatedObjects);
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removeValidatedObjectCollection = true;
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}
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try
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{
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if (!validatedObjects.ContainsKey(obj.GetHashCode()))
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{
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validatedObjects.Add(obj.GetHashCode(), obj);
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try
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{
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Validator[] validators = manager.GetValidators(objType);
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foreach (Validator validator in validators)
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errors.AddRange(validator.Validate(manager, obj));
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}
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finally
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{
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validatedObjects.Remove(obj.GetHashCode());
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}
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}
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}
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finally
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{
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if (removeValidatedObjectCollection)
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manager.Context.Pop();
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}
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}
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return errors;
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}
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internal static ValidationErrorCollection ValidateActivity(ValidationManager manager, Activity activity)
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{
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ValidationErrorCollection errors = ValidationHelpers.ValidateObject(manager, activity);
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foreach (ValidationError error in errors)
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{
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if (!error.UserData.Contains(typeof(Activity)))
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error.UserData[typeof(Activity)] = activity;
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}
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return errors;
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}
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internal static ValidationErrorCollection ValidateProperty(ValidationManager manager, Activity activity, object obj, PropertyValidationContext propertyValidationContext)
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{
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return ValidateProperty(manager, activity, obj, propertyValidationContext, null);
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}
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internal static ValidationErrorCollection ValidateProperty(ValidationManager manager, Activity activity, object obj, PropertyValidationContext propertyValidationContext, object extendedPropertyContext)
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{
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if (manager == null)
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throw new ArgumentNullException("manager");
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if (obj == null)
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throw new ArgumentNullException("obj");
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if (propertyValidationContext == null)
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throw new ArgumentNullException("propertyValidationContext");
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ValidationErrorCollection errors = new ValidationErrorCollection();
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manager.Context.Push(activity);
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manager.Context.Push(propertyValidationContext);
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if (extendedPropertyContext != null)
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manager.Context.Push(extendedPropertyContext);
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try
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{
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errors.AddRange(ValidationHelpers.ValidateObject(manager, obj));
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}
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finally
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{
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manager.Context.Pop();
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manager.Context.Pop();
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if (extendedPropertyContext != null)
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manager.Context.Pop();
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}
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return errors;
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}
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}
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}
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