internal override void AnalyzeUsage(RuleAnalysis analysis)
{
RuleExpressionWalker.AnalyzeUsage(analysis, this.assignStatement.Left, false, true, null);
RuleExpressionWalker.AnalyzeUsage(analysis, this.assignStatement.Right, true, false, null);
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
CodeArrayCreateExpression newParent = (CodeArrayCreateExpression)expression;
if (isWritten)
{
ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeObjectCreateExpression).ToString() }), 0x17a);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if (newParent.CreateType == null)
{
ValidationError error2 = new ValidationError(Messages.NullTypeType, 0x53d);
error2.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error2);
return(null);
}
Type lhsType = validation.ResolveType(newParent.CreateType);
if (lhsType == null)
{
return(null);
}
if (lhsType.IsArray)
{
ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayTypeInvalid, new object[] { lhsType.Name }), 0x53d);
error3.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error3);
return(null);
}
try
{
if (!validation.PushParentExpression(newParent))
{
return(null);
}
if (newParent.Size < 0)
{
ValidationError error4 = new ValidationError(Messages.ArraySizeInvalid, 0x53d);
error4.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error4);
return(null);
}
if (newParent.SizeExpression != null)
{
RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.SizeExpression, false);
if (info == null)
{
return(null);
}
if (((info.ExpressionType != typeof(int)) && (info.ExpressionType != typeof(uint))) && ((info.ExpressionType != typeof(long)) && (info.ExpressionType != typeof(ulong))))
{
ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArraySizeTypeInvalid, new object[] { info.ExpressionType.Name }), 0x53d);
error5.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error5);
return(null);
}
}
bool flag = false;
for (int i = 0; i < newParent.Initializers.Count; i++)
{
CodeExpression expression3 = newParent.Initializers[i];
if (expression3 == null)
{
ValidationError error6 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.MissingInitializer, new object[] { lhsType.Name }), 0x53d);
error6.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error6);
return(null);
}
RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, expression3, false);
if (info2 == null)
{
flag = true;
}
else
{
ValidationError error7;
if (!RuleValidation.StandardImplicitConversion(info2.ExpressionType, lhsType, expression3, out error7))
{
if (error7 != null)
{
error7.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error7);
}
error7 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.InitializerMismatch, new object[] { i, lhsType.Name }), 0x545);
error7.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error7);
return(null);
}
}
}
if (flag)
{
return(null);
}
double size = -1.0;
if (newParent.SizeExpression != null)
{
CodePrimitiveExpression sizeExpression = newParent.SizeExpression as CodePrimitiveExpression;
if ((sizeExpression != null) && (sizeExpression.Value != null))
{
size = (double)Executor.AdjustType(sizeExpression.Value.GetType(), sizeExpression.Value, typeof(double));
}
if (newParent.Size > 0)
{
ValidationError error8 = new ValidationError(Messages.ArraySizeBoth, 0x53d);
error8.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error8);
return(null);
}
}
else if (newParent.Size > 0)
{
size = newParent.Size;
}
if ((size >= 0.0) && (newParent.Initializers.Count > size))
{
ValidationError error9 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.InitializerCountMismatch, new object[] { newParent.Initializers.Count, size }), 0x545);
error9.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error9);
return(null);
}
}
finally
{
validation.PopParentExpression();
}
return(new RuleExpressionInfo(lhsType.MakeArrayType()));
}
internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
{
CodeArrayCreateExpression expression2 = (CodeArrayCreateExpression)expression;
if (expression2.CreateType == null)
{
RuleEvaluationException exception = new RuleEvaluationException(Messages.NullTypeType);
exception.Data["ErrorObject"] = expression2;
throw exception;
}
RuleExpressionInfo info = execution.Validation.ExpressionInfo(expression2);
if (expression2 == null)
{
InvalidOperationException exception2 = new InvalidOperationException(Messages.ExpressionNotValidated);
exception2.Data["ErrorObject"] = expression2;
throw exception2;
}
Type elementType = info.ExpressionType.GetElementType();
int length = 0;
if (expression2.SizeExpression != null)
{
Type expressionType = execution.Validation.ExpressionInfo(expression2.SizeExpression).ExpressionType;
RuleExpressionResult result = RuleExpressionWalker.Evaluate(execution, expression2.SizeExpression);
if (expressionType == typeof(int))
{
length = (int)result.Value;
}
else if (expressionType == typeof(long))
{
length = (int)((long)result.Value);
}
else if (expressionType == typeof(uint))
{
length = (int)((uint)result.Value);
}
else if (expressionType == typeof(ulong))
{
length = (int)((ulong)result.Value);
}
}
else if (expression2.Size != 0)
{
length = expression2.Size;
}
else
{
length = expression2.Initializers.Count;
}
Array literal = Array.CreateInstance(elementType, length);
if (expression2.Initializers != null)
{
for (int i = 0; i < expression2.Initializers.Count; i++)
{
CodeExpression expression3 = expression2.Initializers[i];
Type operandType = execution.Validation.ExpressionInfo(expression3).ExpressionType;
RuleExpressionResult result2 = RuleExpressionWalker.Evaluate(execution, expression3);
literal.SetValue(Executor.AdjustType(operandType, result2.Value, elementType), i);
}
}
return(new RuleLiteralResult(literal));
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
RuleExpressionInfo info;
bool flag;
CodeDirectionExpression expression2 = (CodeDirectionExpression)expression;
if (isWritten)
{
ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeDirectionExpression).ToString() }), 0x17a);
item.UserData["ErrorObject"] = expression2;
validation.Errors.Add(item);
return(null);
}
if (expression2.Expression == null)
{
ValidationError error2 = new ValidationError(Messages.NullDirectionTarget, 0x53d);
error2.UserData["ErrorObject"] = expression2;
validation.Errors.Add(error2);
return(null);
}
if (expression2.Expression is CodeTypeReferenceExpression)
{
ValidationError error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression2.Expression.GetType().FullName }), 0x548);
error.UserData["ErrorObject"] = expression2.Expression;
validation.AddError(error);
return(null);
}
if (expression2.Direction == FieldDirection.Ref)
{
flag = true;
if (RuleExpressionWalker.Validate(validation, expression2.Expression, false) == null)
{
return(null);
}
info = RuleExpressionWalker.Validate(validation, expression2.Expression, true);
}
else if (expression2.Direction == FieldDirection.Out)
{
flag = true;
info = RuleExpressionWalker.Validate(validation, expression2.Expression, true);
}
else
{
flag = false;
info = RuleExpressionWalker.Validate(validation, expression2.Expression, false);
}
if (info == null)
{
return(null);
}
Type expressionType = info.ExpressionType;
if (expressionType == null)
{
return(null);
}
if (((expressionType != typeof(NullLiteral)) && flag) && !expressionType.IsByRef)
{
expressionType = expressionType.MakeByRefType();
}
return(new RuleExpressionInfo(expressionType));
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
ValidationError item = null;
Type expressionType = null;
CodeArrayIndexerExpression newParent = (CodeArrayIndexerExpression)expression;
CodeExpression targetObject = newParent.TargetObject;
if (targetObject == null)
{
item = new ValidationError(Messages.NullIndexerTarget, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if (targetObject is CodeTypeReferenceExpression)
{
item = new ValidationError(Messages.IndexersCannotBeStatic, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if ((newParent.Indices == null) || (newParent.Indices.Count == 0))
{
item = new ValidationError(Messages.MissingIndexExpressions, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
try
{
if (!validation.PushParentExpression(newParent))
{
return(null);
}
RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.TargetObject, false);
if (info == null)
{
return(null);
}
expressionType = info.ExpressionType;
if (expressionType == null)
{
return(null);
}
if (expressionType == typeof(NullLiteral))
{
item = new ValidationError(Messages.NullIndexerTarget, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if (!expressionType.IsArray)
{
item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotIndexType, new object[] { RuleDecompiler.DecompileType(expressionType) }), 0x19b);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
int arrayRank = expressionType.GetArrayRank();
if (newParent.Indices.Count != arrayRank)
{
item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayIndexBadRank, new object[] { arrayRank }), 0x19c);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
bool flag = false;
for (int i = 0; i < newParent.Indices.Count; i++)
{
CodeExpression expression4 = newParent.Indices[i];
if (expression4 == null)
{
item = new ValidationError(Messages.NullIndexExpression, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
flag = true;
continue;
}
if (expression4 is CodeDirectionExpression)
{
item = new ValidationError(Messages.IndexerArgCannotBeRefOrOut, 0x19d);
item.UserData["ErrorObject"] = expression4;
validation.Errors.Add(item);
flag = true;
}
if (expression4 is CodeTypeReferenceExpression)
{
item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression4.GetType().FullName }), 0x548);
item.UserData["ErrorObject"] = expression4;
validation.AddError(item);
flag = true;
}
RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, expression4, false);
if (info2 != null)
{
Type type = info2.ExpressionType;
switch (Type.GetTypeCode(type))
{
case TypeCode.Char:
case TypeCode.SByte:
case TypeCode.Byte:
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Int32:
case TypeCode.Int64:
{
continue;
}
}
item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayIndexBadType, new object[] { RuleDecompiler.DecompileType(type) }), 0x19e);
item.UserData["ErrorObject"] = expression4;
validation.Errors.Add(item);
flag = true;
continue;
}
flag = true;
}
if (flag)
{
return(null);
}
}
finally
{
validation.PopParentExpression();
}
return(new RuleExpressionInfo(expressionType.GetElementType()));
}
internal override bool Validate(RuleValidation validation)
{
bool flag = false;
RuleExpressionInfo info = null;
if (this.assignStatement.Left == null)
{
ValidationError item = new ValidationError(Messages.NullAssignLeft, 0x541);
item.UserData["ErrorObject"] = this.assignStatement;
validation.Errors.Add(item);
}
else
{
info = validation.ExpressionInfo(this.assignStatement.Left);
if (info == null)
{
info = RuleExpressionWalker.Validate(validation, this.assignStatement.Left, true);
}
}
RuleExpressionInfo info2 = null;
if (this.assignStatement.Right == null)
{
ValidationError error2 = new ValidationError(Messages.NullAssignRight, 0x543);
error2.UserData["ErrorObject"] = this.assignStatement;
validation.Errors.Add(error2);
}
else
{
info2 = RuleExpressionWalker.Validate(validation, this.assignStatement.Right, false);
}
if ((info == null) || (info2 == null))
{
return(flag);
}
Type expressionType = info2.ExpressionType;
Type lhsType = info.ExpressionType;
if (lhsType == typeof(NullLiteral))
{
ValidationError error3 = new ValidationError(Messages.NullAssignLeft, 0x542);
error3.UserData["ErrorObject"] = this.assignStatement;
validation.Errors.Add(error3);
return(false);
}
if (lhsType != expressionType)
{
ValidationError error = null;
if (!RuleValidation.TypesAreAssignable(expressionType, lhsType, this.assignStatement.Right, out error))
{
if (error == null)
{
error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.AssignNotAllowed, new object[] { RuleDecompiler.DecompileType(expressionType), RuleDecompiler.DecompileType(lhsType) }), 0x545);
}
error.UserData["ErrorObject"] = this.assignStatement;
validation.Errors.Add(error);
return(flag);
}
}
return(true);
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
CodeFieldReferenceExpression newParent = (CodeFieldReferenceExpression)expression;
if (newParent.TargetObject == null)
{
ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullFieldTarget, new object[] { newParent.FieldName }), 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if (!validation.PushParentExpression(newParent))
{
return(null);
}
RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.TargetObject, false);
validation.PopParentExpression();
if (info == null)
{
return(null);
}
Type expressionType = info.ExpressionType;
if (expressionType == null)
{
return(null);
}
if (expressionType == typeof(NullLiteral))
{
ValidationError error2 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullFieldTarget, new object[] { newParent.FieldName }), 0x546);
error2.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error2);
return(null);
}
BindingFlags @public = BindingFlags.Public;
if (newParent.TargetObject is CodeTypeReferenceExpression)
{
@public |= BindingFlags.FlattenHierarchy | BindingFlags.Static;
}
else
{
@public |= BindingFlags.Instance;
}
if (validation.AllowInternalMembers(expressionType))
{
@public |= BindingFlags.NonPublic;
}
FieldInfo field = expressionType.GetField(newParent.FieldName, @public);
if (field == null)
{
ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownField, new object[] { newParent.FieldName, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
error3.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error3);
return(null);
}
if (field.FieldType == null)
{
ValidationError error4 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.FieldName }), 0x194);
error4.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error4);
return(null);
}
if (isWritten && field.IsLiteral)
{
ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.FieldSetNotAllowed, new object[] { newParent.FieldName, RuleDecompiler.DecompileType(expressionType) }), 0x17a);
error5.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error5);
return(null);
}
if (!validation.ValidateMemberAccess(newParent.TargetObject, expressionType, field, field.Name, newParent))
{
return(null);
}
validation.IsAuthorized(field.FieldType);
return(new RuleFieldExpressionInfo(field));
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
CodePropertyReferenceExpression newParent = (CodePropertyReferenceExpression)expression;
if (newParent.TargetObject == null)
{
ValidationError error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullPropertyTarget, new object[] { newParent.PropertyName }), 0x53d);
error.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error);
return(null);
}
if (!validation.PushParentExpression(newParent))
{
return(null);
}
RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.TargetObject, false);
validation.PopParentExpression();
if (info == null)
{
return(null);
}
Type expressionType = info.ExpressionType;
if (expressionType == null)
{
return(null);
}
if (expressionType == typeof(NullLiteral))
{
ValidationError error2 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullPropertyTarget, new object[] { newParent.PropertyName }), 0x546);
error2.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error2);
return(null);
}
bool nonPublic = false;
BindingFlags bindingFlags = BindingFlags.FlattenHierarchy | BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;
if (validation.AllowInternalMembers(expressionType))
{
bindingFlags |= BindingFlags.NonPublic;
nonPublic = true;
}
PropertyInfo item = validation.ResolveProperty(expressionType, newParent.PropertyName, bindingFlags);
if (item == null)
{
ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownProperty, new object[] { newParent.PropertyName, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
error3.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error3);
return(null);
}
if (item.PropertyType == null)
{
ValidationError error4 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.PropertyName }), 0x194);
error4.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error4);
return(null);
}
MethodInfo accessorMethod = isWritten ? item.GetSetMethod(nonPublic) : item.GetGetMethod(nonPublic);
if (accessorMethod == null)
{
string format = isWritten ? Messages.UnknownPropertySet : Messages.UnknownPropertyGet;
ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, format, new object[] { newParent.PropertyName, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
error5.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error5);
return(null);
}
if (!validation.ValidateMemberAccess(newParent.TargetObject, expressionType, accessorMethod, newParent.PropertyName, newParent))
{
return(null);
}
object[] customAttributes = item.GetCustomAttributes(typeof(RuleAttribute), true);
if ((customAttributes != null) && (customAttributes.Length > 0))
{
Stack <MemberInfo> stack = new Stack <MemberInfo>();
stack.Push(item);
bool flag2 = true;
foreach (RuleAttribute attribute in customAttributes)
{
if (!attribute.Validate(validation, item, expressionType, null))
{
flag2 = false;
}
}
stack.Pop();
if (!flag2)
{
return(null);
}
}
return(new RulePropertyExpressionInfo(item, item.PropertyType, false));
}
internal void AnalyzeReadWrite(RuleAnalysis analysis, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions)
{
if (string.IsNullOrEmpty(this.attributePath))
{
if (this.attributeTarget == RuleAttributeTarget.This)
{
attributedExpressions.Add(targetExpression);
}
else if (this.attributeTarget == RuleAttributeTarget.Parameter)
{
for (int i = 0; i < argumentExpressions.Count; i++)
{
attributedExpressions.Add(argumentExpressions[i]);
}
}
}
else
{
string attributePath = this.attributePath;
bool isRead = !analysis.ForWrites;
bool forWrites = analysis.ForWrites;
if (this.attributeTarget == RuleAttributeTarget.This)
{
string str2 = "this/";
if (attributePath.StartsWith(str2, StringComparison.Ordinal))
{
attributePath = attributePath.Substring(str2.Length);
}
RuleExpressionWalker.AnalyzeUsage(analysis, targetExpression, isRead, forWrites, new RulePathQualifier(attributePath, targetQualifier));
attributedExpressions.Add(targetExpression);
}
else if (this.attributeTarget == RuleAttributeTarget.Parameter)
{
string paramName = null;
int index = attributePath.IndexOf('/');
if (index >= 0)
{
paramName = attributePath.Substring(0, index);
attributePath = attributePath.Substring(index + 1);
}
else
{
paramName = attributePath;
attributePath = null;
}
ParameterInfo info = Array.Find <ParameterInfo>(parameters, p => p.Name == paramName);
if (info != null)
{
RulePathQualifier qualifier = string.IsNullOrEmpty(attributePath) ? null : new RulePathQualifier(attributePath, null);
int count = info.Position + 1;
if (info.Position == (parameters.Length - 1))
{
count = argumentExpressions.Count;
}
for (int j = info.Position; j < count; j++)
{
CodeExpression expression = argumentExpressions[j];
RuleExpressionWalker.AnalyzeUsage(analysis, expression, isRead, forWrites, qualifier);
attributedExpressions.Add(expression);
}
}
}
}
}
internal override void Execute(RuleExecution execution)
{
RuleExpressionWalker.Evaluate(execution, this.exprStatement.Expression);
}
internal override bool Match(CodeStatement comperand)
{
CodeExpressionStatement statement = comperand as CodeExpressionStatement;
return((statement != null) && RuleExpressionWalker.Match(this.exprStatement.Expression, statement.Expression));
}
internal override CodeStatement Clone()
{
return(new CodeExpressionStatement {
Expression = RuleExpressionWalker.Clone(this.exprStatement.Expression)
});
}
internal override void AnalyzeUsage(RuleAnalysis analysis)
{
RuleExpressionWalker.AnalyzeUsage(analysis, this.exprStatement.Expression, false, false, null);
}
internal override bool Validate(RuleValidation validation)
{
bool success = false;
string message;
RuleExpressionInfo lhsExprInfo = null;
if (assignStatement.Left == null)
{
ValidationError error = new ValidationError(Messages.NullAssignLeft, ErrorNumbers.Error_LeftOperandMissing);
error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
validation.Errors.Add(error);
}
else
{
lhsExprInfo = validation.ExpressionInfo(assignStatement.Left);
if (lhsExprInfo == null)
{
lhsExprInfo = RuleExpressionWalker.Validate(validation, assignStatement.Left, true);
}
}
RuleExpressionInfo rhsExprInfo = null;
if (assignStatement.Right == null)
{
ValidationError error = new ValidationError(Messages.NullAssignRight, ErrorNumbers.Error_RightOperandMissing);
error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
validation.Errors.Add(error);
}
else
{
rhsExprInfo = RuleExpressionWalker.Validate(validation, assignStatement.Right, false);
}
if (lhsExprInfo != null && rhsExprInfo != null)
{
Type expressionType = rhsExprInfo.ExpressionType;
Type assignmentType = lhsExprInfo.ExpressionType;
if (assignmentType == typeof(NullLiteral))
{
// Can't assign to a null literal.
ValidationError error = new ValidationError(Messages.NullAssignLeft, ErrorNumbers.Error_LeftOperandInvalidType);
error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
validation.Errors.Add(error);
success = false;
}
else if (assignmentType == expressionType)
{
// Easy case, they're both the same type.
success = true;
}
else
{
// The types aren't the same, but it still might be a legal assignment.
ValidationError error = null;
if (!RuleValidation.TypesAreAssignable(expressionType, assignmentType, assignStatement.Right, out error))
{
if (error == null)
{
message = string.Format(CultureInfo.CurrentCulture, Messages.AssignNotAllowed, RuleDecompiler.DecompileType(expressionType), RuleDecompiler.DecompileType(assignmentType));
error = new ValidationError(message, ErrorNumbers.Error_OperandTypesIncompatible);
}
error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
validation.Errors.Add(error);
}
else
{
success = true;
}
}
}
return(success);
}
internal override CodeStatement Clone()
{
return(new CodeAssignStatement {
Left = RuleExpressionWalker.Clone(this.assignStatement.Left), Right = RuleExpressionWalker.Clone(this.assignStatement.Right)
});
}
internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
{
object obj3;
CodeMethodInvokeExpression expression2 = (CodeMethodInvokeExpression)expression;
object obj2 = RuleExpressionWalker.Evaluate(execution, expression2.Method.TargetObject).Value;
RuleMethodInvokeExpressionInfo info = execution.Validation.ExpressionInfo(expression2) as RuleMethodInvokeExpressionInfo;
if (info == null)
{
InvalidOperationException exception = new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Messages.ExpressionNotValidated, new object[0]));
exception.Data["ErrorObject"] = expression2;
throw exception;
}
MethodInfo methodInfo = info.MethodInfo;
if (!methodInfo.IsStatic && (obj2 == null))
{
RuleEvaluationException exception2 = new RuleEvaluationException(string.Format(CultureInfo.CurrentCulture, Messages.TargetEvaluatedNullMethod, new object[] { expression2.Method.MethodName }));
exception2.Data["ErrorObject"] = expression2;
throw exception2;
}
object[] parameters = null;
RuleExpressionResult[] resultArray = null;
if ((expression2.Parameters != null) && (expression2.Parameters.Count > 0))
{
int count = expression2.Parameters.Count;
ParameterInfo[] infoArray = methodInfo.GetParameters();
parameters = new object[infoArray.Length];
int length = infoArray.Length;
if (info.NeedsParamsExpansion)
{
length--;
}
int index = 0;
while (index < length)
{
Type expressionType = execution.Validation.ExpressionInfo(expression2.Parameters[index]).ExpressionType;
RuleExpressionResult result = RuleExpressionWalker.Evaluate(execution, expression2.Parameters[index]);
CodeDirectionExpression expression3 = expression2.Parameters[index] as CodeDirectionExpression;
if ((expression3 != null) && ((expression3.Direction == FieldDirection.Ref) || (expression3.Direction == FieldDirection.Out)))
{
if (resultArray == null)
{
resultArray = new RuleExpressionResult[expression2.Parameters.Count];
}
resultArray[index] = result;
if (expression3.Direction != FieldDirection.Out)
{
parameters[index] = Executor.AdjustType(expressionType, result.Value, infoArray[index].ParameterType);
}
}
else
{
parameters[index] = Executor.AdjustType(expressionType, result.Value, infoArray[index].ParameterType);
}
index++;
}
if (length < count)
{
ParameterInfo info3 = infoArray[length];
Type parameterType = info3.ParameterType;
Type elementType = parameterType.GetElementType();
Array array = (Array)parameterType.InvokeMember(parameterType.Name, BindingFlags.CreateInstance, null, null, new object[] { count - index }, CultureInfo.CurrentCulture);
while (index < count)
{
Type operandType = execution.Validation.ExpressionInfo(expression2.Parameters[index]).ExpressionType;
RuleExpressionResult result2 = RuleExpressionWalker.Evaluate(execution, expression2.Parameters[index]);
array.SetValue(Executor.AdjustType(operandType, result2.Value, elementType), (int)(index - length));
index++;
}
parameters[length] = array;
}
}
try
{
obj3 = methodInfo.Invoke(obj2, parameters);
}
catch (TargetInvocationException exception3)
{
if (exception3.InnerException == null)
{
throw;
}
throw new TargetInvocationException(string.Format(CultureInfo.CurrentCulture, Messages.Error_MethodInvoke, new object[] { RuleDecompiler.DecompileType(methodInfo.ReflectedType), methodInfo.Name, exception3.InnerException.Message }), exception3.InnerException);
}
if (resultArray != null)
{
for (int i = 0; i < expression2.Parameters.Count; i++)
{
if (resultArray[i] != null)
{
resultArray[i].Value = parameters[i];
}
}
}
return(new RuleLiteralResult(obj3));
}
internal override bool Match(CodeStatement comperand)
{
CodeAssignStatement statement = comperand as CodeAssignStatement;
return(((statement != null) && RuleExpressionWalker.Match(this.assignStatement.Left, statement.Left)) && RuleExpressionWalker.Match(this.assignStatement.Right, statement.Right));
}
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);
}
public override bool Equals(object obj)
{
bool flag = false;
RuleExpressionCondition condition = obj as RuleExpressionCondition;
if (condition != null)
{
flag = (this.Name == condition.Name) && (((this._expression == null) && (condition.Expression == null)) || ((this._expression != null) && RuleExpressionWalker.Match(this._expression, condition.Expression)));
}
return(flag);
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
ValidationError error;
CodeObjectCreateExpression newParent = (CodeObjectCreateExpression)expression;
if (isWritten)
{
error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeObjectCreateExpression).ToString() }), 0x17a);
error.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error);
return(null);
}
if (newParent.CreateType == null)
{
error = new ValidationError(Messages.NullTypeType, 0x53d);
error.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error);
return(null);
}
Type type = validation.ResolveType(newParent.CreateType);
if (type == null)
{
return(null);
}
List <CodeExpression> argumentExprs = new List <CodeExpression>();
try
{
if (!validation.PushParentExpression(newParent))
{
return(null);
}
bool flag = false;
for (int i = 0; i < newParent.Parameters.Count; i++)
{
CodeExpression expression3 = newParent.Parameters[i];
if (expression3 == null)
{
error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullConstructorParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), RuleDecompiler.DecompileType(type) }), 0x53d);
error.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error);
flag = true;
}
else
{
if (RuleExpressionWalker.Validate(validation, expression3, false) == null)
{
flag = true;
}
argumentExprs.Add(expression3);
}
}
if (flag)
{
return(null);
}
}
finally
{
validation.PopParentExpression();
}
BindingFlags constructorBindingFlags = BindingFlags.Public | BindingFlags.Instance;
if (validation.AllowInternalMembers(type))
{
constructorBindingFlags |= BindingFlags.NonPublic;
}
if (type.IsValueType && (argumentExprs.Count == 0))
{
return(new RuleExpressionInfo(type));
}
if (type.IsAbstract)
{
error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, new object[] { RuleDecompiler.DecompileType(type) }), 0x137);
error.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error);
return(null);
}
RuleConstructorExpressionInfo info2 = validation.ResolveConstructor(type, constructorBindingFlags, argumentExprs, out error);
if (info2 == null)
{
error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, new object[] { RuleDecompiler.DecompileType(type) }), 0x137);
error.UserData["ErrorObject"] = newParent;
validation.Errors.Add(error);
return(null);
}
return(info2);
}
internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
{
CodeDirectionExpression expression2 = (CodeDirectionExpression)expression;
return(RuleExpressionWalker.Evaluate(execution, expression2.Expression));
}
internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
{
object obj2;
CodeObjectCreateExpression expression2 = (CodeObjectCreateExpression)expression;
if (expression2.CreateType == null)
{
RuleEvaluationException exception = new RuleEvaluationException(Messages.NullTypeType);
exception.Data["ErrorObject"] = expression2;
throw exception;
}
RuleExpressionInfo info = execution.Validation.ExpressionInfo(expression2);
if (info == null)
{
InvalidOperationException exception2 = new InvalidOperationException(Messages.ExpressionNotValidated);
exception2.Data["ErrorObject"] = expression2;
throw exception2;
}
RuleConstructorExpressionInfo info2 = info as RuleConstructorExpressionInfo;
if (info2 == null)
{
return(new RuleLiteralResult(Activator.CreateInstance(info.ExpressionType)));
}
ConstructorInfo constructorInfo = info2.ConstructorInfo;
object[] parameters = null;
RuleExpressionResult[] resultArray = null;
if ((expression2.Parameters != null) && (expression2.Parameters.Count > 0))
{
int count = expression2.Parameters.Count;
ParameterInfo[] infoArray = constructorInfo.GetParameters();
parameters = new object[infoArray.Length];
int length = infoArray.Length;
if (info2.NeedsParamsExpansion)
{
length--;
}
int index = 0;
while (index < length)
{
Type expressionType = execution.Validation.ExpressionInfo(expression2.Parameters[index]).ExpressionType;
RuleExpressionResult result = RuleExpressionWalker.Evaluate(execution, expression2.Parameters[index]);
CodeDirectionExpression expression3 = expression2.Parameters[index] as CodeDirectionExpression;
if ((expression3 != null) && ((expression3.Direction == FieldDirection.Ref) || (expression3.Direction == FieldDirection.Out)))
{
if (resultArray == null)
{
resultArray = new RuleExpressionResult[count];
}
resultArray[index] = result;
}
parameters[index] = Executor.AdjustType(expressionType, result.Value, infoArray[index].ParameterType);
index++;
}
if (length < count)
{
ParameterInfo info4 = infoArray[length];
Type elementType = info4.ParameterType.GetElementType();
Array array = Array.CreateInstance(elementType, (int)(count - index));
while (index < count)
{
Type operandType = execution.Validation.ExpressionInfo(expression2.Parameters[index]).ExpressionType;
RuleExpressionResult result2 = RuleExpressionWalker.Evaluate(execution, expression2.Parameters[index]);
array.SetValue(Executor.AdjustType(operandType, result2.Value, elementType), (int)(index - length));
index++;
}
parameters[length] = array;
}
}
try
{
obj2 = constructorInfo.Invoke(parameters);
}
catch (TargetInvocationException exception3)
{
if (exception3.InnerException == null)
{
throw;
}
throw new TargetInvocationException(string.Format(CultureInfo.CurrentCulture, Messages.Error_ConstructorInvoke, new object[] { RuleDecompiler.DecompileType(info2.ExpressionType), exception3.InnerException.Message }), exception3.InnerException);
}
if (resultArray != null)
{
for (int i = 0; i < expression2.Parameters.Count; i++)
{
if (resultArray[i] != null)
{
resultArray[i].Value = parameters[i];
}
}
}
return(new RuleLiteralResult(obj2));
}
internal void AnalyzeReadWrite(RuleAnalysis analysis, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions)
{
if (string.IsNullOrEmpty(attributePath))
{
// If the suffix is null or empty, this means the RuleAttributeTarget has no dependencies.
if (attributeTarget == RuleAttributeTarget.This)
{
// The target object has no dependencies.
attributedExpressions.Add(targetExpression);
}
else if (attributeTarget == RuleAttributeTarget.Parameter)
{
// ALL arguments have no dependencies.
for (int i = 0; i < argumentExpressions.Count; ++i)
{
attributedExpressions.Add(argumentExpressions[i]);
}
}
}
else
{
string suffix = attributePath;
bool isRead = !analysis.ForWrites;
bool isWrite = analysis.ForWrites;
if (attributeTarget == RuleAttributeTarget.This)
{
// Target is "This", so perform the analysis on the target expression.
// Remove the optional "this/" token if present.
string optionalPrefix = "this/";
if (suffix.StartsWith(optionalPrefix, StringComparison.Ordinal))
{
suffix = suffix.Substring(optionalPrefix.Length);
}
RuleExpressionWalker.AnalyzeUsage(analysis, targetExpression, isRead, isWrite, new RulePathQualifier(suffix, targetQualifier));
attributedExpressions.Add(targetExpression);
}
else if (attributeTarget == RuleAttributeTarget.Parameter)
{
string paramName = null;
int firstSlash = suffix.IndexOf('/');
if (firstSlash >= 0)
{
paramName = suffix.Substring(0, firstSlash);
suffix = suffix.Substring(firstSlash + 1);
}
else
{
paramName = suffix;
suffix = null;
}
// Find the ParameterInfo that corresponds to this attribute path.
ParameterInfo param = Array.Find <ParameterInfo>(parameters,
delegate(ParameterInfo p) { return(p.Name == paramName); });
if (param != null)
{
RulePathQualifier qualifier = string.IsNullOrEmpty(suffix) ? null : new RulePathQualifier(suffix, null);
// 99.9% of the time, the parameter usage attribute only applies to one argument. However,
// if this attribute corresponds to the last parameter, then just assume that all the trailing
// arguments correspond. (In other words, if the caller passed more arguments then there
// are parameters, we assume it was a params array.)
//
// Usually this loop will only execute once.
int end = param.Position + 1;
if (param.Position == parameters.Length - 1)
{
end = argumentExpressions.Count;
}
for (int i = param.Position; i < end; ++i)
{
CodeExpression argExpr = argumentExpressions[i];
RuleExpressionWalker.AnalyzeUsage(analysis, argExpr, isRead, isWrite, qualifier);
attributedExpressions.Add(argExpr);
}
}
}
}
}
internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
{
ValidationError item = null;
RulePropertyExpressionInfo info = null;
bool nonPublic = false;
Type expressionType = null;
CodeIndexerExpression newParent = (CodeIndexerExpression)expression;
CodeExpression targetObject = newParent.TargetObject;
if (targetObject == null)
{
item = new ValidationError(Messages.NullIndexerTarget, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if (targetObject is CodeTypeReferenceExpression)
{
item = new ValidationError(Messages.IndexersCannotBeStatic, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if ((newParent.Indices == null) || (newParent.Indices.Count == 0))
{
item = new ValidationError(Messages.MissingIndexExpressions, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
try
{
if (!validation.PushParentExpression(newParent))
{
return(null);
}
RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, newParent.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.NullIndexerTarget, new object[0]), 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
expressionType = null;
}
List <CodeExpression> argumentExprs = new List <CodeExpression>();
bool flag2 = false;
for (int i = 0; i < newParent.Indices.Count; i++)
{
CodeExpression expression4 = newParent.Indices[i];
if (expression4 == null)
{
item = new ValidationError(Messages.NullIndexExpression, 0x53d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
flag2 = true;
}
else
{
CodeDirectionExpression expression5 = expression4 as CodeDirectionExpression;
if ((expression5 != null) && (expression5.Direction != FieldDirection.In))
{
item = new ValidationError(Messages.IndexerArgCannotBeRefOrOut, 0x19d);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
flag2 = true;
}
if (expression4 is CodeTypeReferenceExpression)
{
item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression4.GetType().FullName }), 0x548);
item.UserData["ErrorObject"] = expression4;
validation.AddError(item);
flag2 = true;
}
if (RuleExpressionWalker.Validate(validation, expression4, false) == null)
{
flag2 = true;
}
else
{
argumentExprs.Add(expression4);
}
}
}
if (expressionType == null)
{
return(null);
}
if (flag2)
{
return(null);
}
BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance;
if (validation.AllowInternalMembers(expressionType))
{
bindingFlags |= BindingFlags.NonPublic;
nonPublic = true;
}
info = validation.ResolveIndexerProperty(expressionType, bindingFlags, argumentExprs, out item);
if (info == null)
{
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
}
finally
{
validation.PopParentExpression();
}
PropertyInfo propertyInfo = info.PropertyInfo;
MethodInfo accessorMethod = isWritten ? propertyInfo.GetSetMethod(nonPublic) : propertyInfo.GetGetMethod(nonPublic);
if (accessorMethod == null)
{
string format = isWritten ? Messages.UnknownPropertySet : Messages.UnknownPropertyGet;
item = new ValidationError(string.Format(CultureInfo.CurrentCulture, format, new object[] { propertyInfo.Name, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
item.UserData["ErrorObject"] = newParent;
validation.Errors.Add(item);
return(null);
}
if (!validation.ValidateMemberAccess(targetObject, expressionType, accessorMethod, propertyInfo.Name, newParent))
{
return(null);
}
object[] customAttributes = propertyInfo.GetCustomAttributes(typeof(RuleAttribute), true);
if ((customAttributes != null) && (customAttributes.Length > 0))
{
Stack <MemberInfo> stack = new Stack <MemberInfo>();
stack.Push(propertyInfo);
bool flag3 = true;
foreach (RuleAttribute attribute in customAttributes)
{
if (!attribute.Validate(validation, propertyInfo, expressionType, propertyInfo.GetIndexParameters()))
{
flag3 = false;
}
}
stack.Pop();
if (!flag3)
{
return(null);
}
}
return(info);
}