internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten) { Type targetType = null; RuleMethodInvokeExpressionInfo methodInvokeInfo = null; string message; ValidationError error = null; BindingFlags bindingFlags = BindingFlags.Public; CodeMethodInvokeExpression invokeExpr = (CodeMethodInvokeExpression)expression; if (isWritten) { message = string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, typeof(CodeMethodInvokeExpression).ToString()); error = new ValidationError(message, ErrorNumbers.Error_InvalidAssignTarget); error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); return null; } if ((invokeExpr.Method == null) || (invokeExpr.Method.TargetObject == null)) { message = string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, invokeExpr.Method.MethodName); error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet); error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); return null; // Fatal error; discontinue validation of this object. } if ((invokeExpr.Method.TypeArguments != null) && (invokeExpr.Method.TypeArguments.Count > 0)) { error = new ValidationError(Messages.GenericMethodsNotSupported, ErrorNumbers.Error_CodeExpressionNotHandled); error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); return null; } try { // Early exit from this if a cycle is detected. if (!validation.PushParentExpression(invokeExpr)) return null; RuleExpressionInfo targetExprInfo = RuleExpressionWalker.Validate(validation, invokeExpr.Method.TargetObject, false); if (targetExprInfo == null) // error occurred, so simply return return null; targetType = targetExprInfo.ExpressionType; if (targetType == null) return null; // if an error occurred (targetType == null), continue on to validate the arguments if (targetType == typeof(NullLiteral)) { message = string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, invokeExpr.Method.MethodName); error = new ValidationError(message, ErrorNumbers.Error_BindingTypeMissing); error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); targetType = null; // force exit after validating the arguments } List<CodeExpression> argExprs = new List<CodeExpression>(); bool hasInvalidArgument = false; if (invokeExpr.Parameters != null) { for (int i = 0; i < invokeExpr.Parameters.Count; ++i) { CodeExpression argExpr = invokeExpr.Parameters[i]; if (argExpr == null) { message = string.Format(CultureInfo.CurrentCulture, Messages.NullMethodParameter, i.ToString(CultureInfo.CurrentCulture), invokeExpr.Method.MethodName); error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet); error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); targetType = null; // force exit after validating the rest of the arguments } else { if (argExpr is CodeTypeReferenceExpression) { message = string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, argExpr.GetType().FullName); error = new ValidationError(message, ErrorNumbers.Error_CodeExpressionNotHandled); error.UserData[RuleUserDataKeys.ErrorObject] = argExpr; validation.AddError(error); hasInvalidArgument = true; } // Validate the argument. RuleExpressionInfo argExprInfo = RuleExpressionWalker.Validate(validation, argExpr, false); if (argExprInfo == null) hasInvalidArgument = true; argExprs.Add(argExpr); } } } // Stop further validation if there was a problem with the target expression. if (targetType == null) return null; // Stop further validation if there was a problem with any of the arguments. if (hasInvalidArgument) return null; if (invokeExpr.Method.TargetObject is CodeTypeReferenceExpression) bindingFlags |= BindingFlags.Static | BindingFlags.FlattenHierarchy; else bindingFlags |= BindingFlags.Instance; if (validation.AllowInternalMembers(targetType)) bindingFlags |= BindingFlags.NonPublic; // Everything okay so far, try to resolve the method. methodInvokeInfo = validation.ResolveMethod(targetType, invokeExpr.Method.MethodName, bindingFlags, argExprs, out error); if ((methodInvokeInfo == null) && (invokeExpr.UserData.Contains(RuleUserDataKeys.QualifiedName))) { // failed to resolve the method, but a fully qualified type name is around // load the type, add it to the assemblies, and try again string qualifiedName = invokeExpr.UserData[RuleUserDataKeys.QualifiedName] as string; Type containingClassType = validation.ResolveType(qualifiedName); if (containingClassType != null) { validation.DetermineExtensionMethods(containingClassType.Assembly); methodInvokeInfo = validation.ResolveMethod(targetType, invokeExpr.Method.MethodName, bindingFlags, argExprs, out error); } } if (methodInvokeInfo == null) { error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); return null; } } finally { validation.PopParentExpression(); } MethodInfo mi = methodInvokeInfo.MethodInfo; if (mi.ReturnType == null) { // This can only happen with a design-time type. message = string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, invokeExpr.Method.MethodName); error = new ValidationError(message, ErrorNumbers.Error_CouldNotDetermineMemberType); error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr; validation.Errors.Add(error); return null; } if (!validation.ValidateMemberAccess(invokeExpr.Method.TargetObject, targetType, mi, invokeExpr.Method.MethodName, invokeExpr)) return null; // Validate any RuleAttributes, if present. object[] attrs = mi.GetCustomAttributes(typeof(RuleAttribute), true); if (attrs != null && attrs.Length > 0) { Stack<MemberInfo> methodStack = new Stack<MemberInfo>(); methodStack.Push(mi); bool allAttributesValid = true; foreach (RuleAttribute ruleAttr in attrs) { if (!ruleAttr.Validate(validation, mi, targetType, mi.GetParameters())) allAttributesValid = false; } methodStack.Pop(); if (!allAttributesValid) return null; } // if this is an extension method, save the type information if (mi is ExtensionMethodInfo) { invokeExpr.UserData[RuleUserDataKeys.QualifiedName] = mi.DeclaringType.AssemblyQualifiedName; } return methodInvokeInfo; }
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten) { Type expressionType = null; RuleMethodInvokeExpressionInfo info = null; ValidationError item = null; BindingFlags @public = BindingFlags.Public; CodeMethodInvokeExpression newParent = (CodeMethodInvokeExpression)expression; if (isWritten) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeMethodInvokeExpression).ToString() }), 0x17a); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return(null); } if ((newParent.Method == null) || (newParent.Method.TargetObject == null)) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x53d); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return(null); } if ((newParent.Method.TypeArguments != null) && (newParent.Method.TypeArguments.Count > 0)) { item = new ValidationError(Messages.GenericMethodsNotSupported, 0x548); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return(null); } try { if (!validation.PushParentExpression(newParent)) { return(null); } RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, newParent.Method.TargetObject, false); if (info2 == null) { return(null); } expressionType = info2.ExpressionType; if (expressionType == null) { return(null); } if (expressionType == typeof(NullLiteral)) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x546); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); expressionType = null; } List <CodeExpression> argumentExprs = new List <CodeExpression>(); bool flag = false; if (newParent.Parameters != null) { for (int i = 0; i < newParent.Parameters.Count; i++) { CodeExpression expression3 = newParent.Parameters[i]; if (expression3 == null) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), newParent.Method.MethodName }), 0x53d); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); expressionType = null; } else { if (expression3 is CodeTypeReferenceExpression) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression3.GetType().FullName }), 0x548); item.UserData["ErrorObject"] = expression3; validation.AddError(item); flag = true; } if (RuleExpressionWalker.Validate(validation, expression3, false) == null) { flag = true; } argumentExprs.Add(expression3); } } } if (expressionType == null) { return(null); } if (flag) { return(null); } if (newParent.Method.TargetObject is CodeTypeReferenceExpression) { @public |= BindingFlags.FlattenHierarchy | BindingFlags.Static; } else { @public |= BindingFlags.Instance; } if (validation.AllowInternalMembers(expressionType)) { @public |= BindingFlags.NonPublic; } info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item); if ((info == null) && newParent.UserData.Contains("QualifiedName")) { string qualifiedName = newParent.UserData["QualifiedName"] as string; Type type2 = validation.ResolveType(qualifiedName); if (type2 != null) { validation.DetermineExtensionMethods(type2.Assembly); info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item); } } if (info == null) { item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return(null); } } finally { validation.PopParentExpression(); } MethodInfo methodInfo = info.MethodInfo; if (methodInfo.ReturnType == null) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.Method.MethodName }), 0x194); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return(null); } if (!validation.ValidateMemberAccess(newParent.Method.TargetObject, expressionType, methodInfo, newParent.Method.MethodName, newParent)) { return(null); } object[] customAttributes = methodInfo.GetCustomAttributes(typeof(RuleAttribute), true); if ((customAttributes != null) && (customAttributes.Length > 0)) { Stack <MemberInfo> stack = new Stack <MemberInfo>(); stack.Push(methodInfo); bool flag2 = true; foreach (RuleAttribute attribute in customAttributes) { if (!attribute.Validate(validation, methodInfo, expressionType, methodInfo.GetParameters())) { flag2 = false; } } stack.Pop(); if (!flag2) { return(null); } } if (methodInfo is ExtensionMethodInfo) { newParent.UserData["QualifiedName"] = methodInfo.DeclaringType.AssemblyQualifiedName; } return(info); }
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten) { Type expressionType = null; RuleMethodInvokeExpressionInfo info = null; ValidationError item = null; BindingFlags @public = BindingFlags.Public; CodeMethodInvokeExpression newParent = (CodeMethodInvokeExpression) expression; if (isWritten) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeMethodInvokeExpression).ToString() }), 0x17a); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return null; } if ((newParent.Method == null) || (newParent.Method.TargetObject == null)) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x53d); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return null; } if ((newParent.Method.TypeArguments != null) && (newParent.Method.TypeArguments.Count > 0)) { item = new ValidationError(Messages.GenericMethodsNotSupported, 0x548); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return null; } try { if (!validation.PushParentExpression(newParent)) { return null; } RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, newParent.Method.TargetObject, false); if (info2 == null) { return null; } expressionType = info2.ExpressionType; if (expressionType == null) { return null; } if (expressionType == typeof(NullLiteral)) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x546); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); expressionType = null; } List<CodeExpression> argumentExprs = new List<CodeExpression>(); bool flag = false; if (newParent.Parameters != null) { for (int i = 0; i < newParent.Parameters.Count; i++) { CodeExpression expression3 = newParent.Parameters[i]; if (expression3 == null) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), newParent.Method.MethodName }), 0x53d); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); expressionType = null; } else { if (expression3 is CodeTypeReferenceExpression) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression3.GetType().FullName }), 0x548); item.UserData["ErrorObject"] = expression3; validation.AddError(item); flag = true; } if (RuleExpressionWalker.Validate(validation, expression3, false) == null) { flag = true; } argumentExprs.Add(expression3); } } } if (expressionType == null) { return null; } if (flag) { return null; } if (newParent.Method.TargetObject is CodeTypeReferenceExpression) { @public |= BindingFlags.FlattenHierarchy | BindingFlags.Static; } else { @public |= BindingFlags.Instance; } if (validation.AllowInternalMembers(expressionType)) { @public |= BindingFlags.NonPublic; } info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item); if ((info == null) && newParent.UserData.Contains("QualifiedName")) { string qualifiedName = newParent.UserData["QualifiedName"] as string; Type type2 = validation.ResolveType(qualifiedName); if (type2 != null) { validation.DetermineExtensionMethods(type2.Assembly); info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item); } } if (info == null) { item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return null; } } finally { validation.PopParentExpression(); } MethodInfo methodInfo = info.MethodInfo; if (methodInfo.ReturnType == null) { item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.Method.MethodName }), 0x194); item.UserData["ErrorObject"] = newParent; validation.Errors.Add(item); return null; } if (!validation.ValidateMemberAccess(newParent.Method.TargetObject, expressionType, methodInfo, newParent.Method.MethodName, newParent)) { return null; } object[] customAttributes = methodInfo.GetCustomAttributes(typeof(RuleAttribute), true); if ((customAttributes != null) && (customAttributes.Length > 0)) { Stack<MemberInfo> stack = new Stack<MemberInfo>(); stack.Push(methodInfo); bool flag2 = true; foreach (RuleAttribute attribute in customAttributes) { if (!attribute.Validate(validation, methodInfo, expressionType, methodInfo.GetParameters())) { flag2 = false; } } stack.Pop(); if (!flag2) { return null; } } if (methodInfo is ExtensionMethodInfo) { newParent.UserData["QualifiedName"] = methodInfo.DeclaringType.AssemblyQualifiedName; } return info; }