private void WriteStringLength(ILWriter writer, PropertyInfo property, StringLengthAttribute attribute)
{
var local = writer.DeclareLocal <string>();
if (property.PropertyType == typeof(string))
{
writer.LoadFirstParameter();
writer.GetPropertyValue(property);
writer.SetLocal(local);
writer.LoadLocal(local);
writer.LoadNull();
var notNullBlock = writer.IfEqualThen();
var isNullMessage = CommonResults.PropertyCannotBeNull.WithValues(property.ReflectedType.Name, property.Name);
WriteFailureResult(writer, ValidationKind.StringLength, isNullMessage);
writer.Return();
writer.MarkLabel(notNullBlock);
var lengthValue = writer.DeclareLocal <int>();
var length = KnownMetadata.Properties.String_Length;
writer.LoadLocal(local);
writer.GetPropertyValue(length);
writer.SetLocal(lengthValue);
var minValue = attribute.Minimum;
writer.LoadLocal(lengthValue);
writer.LoadInt32((int)minValue);
var longerThanMinBlock = writer.IfLessThan();
var tooShortMessage = CommonResults.StringPropertyIsTooShort.WithValues(property.ReflectedType.Name, property.Name, minValue);
WriteFailureResult(writer, ValidationKind.StringLength, tooShortMessage);
writer.Return();
writer.MarkLabel(longerThanMinBlock);
var maxValue = attribute.Maximum;
//The maximum value might not be set, if so then just ignore it
if (maxValue > 0)
{
writer.LoadLocal(lengthValue);
writer.LoadInt32((int)maxValue);
var shorterThanMaxBlock = writer.IfGreaterThan();
var tooLongMessage = CommonResults.StringPropertyIsTooLong.WithValues(property.ReflectedType.Name, property.Name, maxValue);
WriteFailureResult(writer, ValidationKind.StringLength, tooLongMessage);
writer.Return();
writer.MarkLabel(shorterThanMaxBlock);
}
}
else
{
WriteNotApplicableResult(writer, ValidationKind.StringLength);
writer.Return();
}
}
private void WriteTryCatchBlockBody(ILWriter writer, IImmutableQueue <Type> exceptionTypes)
{
var currentExecutionAttempt = writer.DeclareLocal <int>();
var shouldRetry = writer.DeclareLocal <bool>();
var retryLabel = writer.DefineLabel();
writer.MarkLabel(retryLabel);
writer.WriteIncrement(currentExecutionAttempt, 1);
writer.TryCatch(
endOfTryCatch =>
{
writer.LoadFalse();
writer.SetLocal(shouldRetry);
var method = KnownMetadata.Methods.IExceptionAwareAction_Do;
writer.LoadFirstParameter();
writer.InstanceMethodCall(method);
},
WriteUnrolledCatchBlocks(writer, exceptionTypes, shouldRetry, currentExecutionAttempt)
);
writer.LoadLocal(shouldRetry);
var shouldNotRetry = writer.IfTrueThen();
writer.GoTo(retryLabel);
writer.MarkLabel(shouldNotRetry);
writer.Return();
}
private void WriteCustomValidation(ILWriter writer, PropertyInfo property, CustomValidationAttribute customValidationAttribute)
{
var validationKind = ValidationKind.Custom;
var validatorType = typeof(ICustomValidator <>).MakeGenericType(property.PropertyType);
if (!customValidationAttribute.ValidatorType.CanBe(validatorType))
{
var message = CommonErrors.CustomValidatorMustBeOfType.WithValues(property.ReflectedType.Name, property.Name, property.PropertyType.Name);
throw new IncorrectValidationAttributeException(typeof(CustomValidationAttribute), message);
}
var localValidator = writer.DeclareLocal(validatorType);
writer.New(customValidationAttribute.ValidatorType);
writer.SetLocal(localValidator);
var validate = KnownMetadata.Methods.ICustomValidator_OfType(property.PropertyType);
writer.LoadLocal(localValidator);
writer.LoadFirstParameter();
writer.GetPropertyValue(property);
writer.InstanceMethodCall(validate);
var end = writer.IfFalseThen();
WriteFailureResult(writer, validationKind, CommonResults.CustomValidationDidNotSucceed.WithValues(property.ReflectedType.Name, property.Name));
writer.Return();
writer.MarkLabel(end);
}
public void DeclareLocalOverloadDoesNotUnbalanceTheStack()
{
var method = new DynamicMethod(String.Empty, typeof(void), Type.EmptyTypes);
var generator = method.GetILGenerator();
var il = new ILWriter(generator);
var localBuilder = il.DeclareLocal<object>();
il.VerifyStack();
}
public void DeclareLocalOverloadDoesNotUnbalanceTheStack()
{
var method = new DynamicMethod(String.Empty, typeof(void), Type.EmptyTypes);
var generator = method.GetILGenerator();
var il = new ILWriter(generator);
var localBuilder = il.DeclareLocal <object>();
il.VerifyStack();
}
private void WriteIsMatch(ILWriter writer, PropertyInfo property, IsMatchForAttribute isMatchAttribute)
{
var validationKind = ValidationKind.RegularExpressionMatch;
var local = writer.DeclareLocal <string>();
if (property.PropertyType == typeof(string))
{
writer.LoadFirstParameter();
writer.GetPropertyValue(property);
writer.SetLocal(local);
}
else
{
var temp = writer.DeclareLocal(property.PropertyType);
writer.LoadFirstParameter();
writer.GetPropertyValue(property);
writer.SetLocal(temp);
writer.LoadLocal(temp);
var notNull = writer.IsNotNull();
WriteFailureResult(writer, validationKind, CommonResults.CannotValidateNullProperty.WithValues(property.ReflectedType.Name, property.Name));
writer.Return();
writer.MarkLabel(notNull);
writer.LoadLocal(temp);
writer.InstanceMethodCall(KnownMetadata.Methods.Object_ToString);
writer.SetLocal(local);
}
writer.LoadLocal(local);
writer.LoadString(isMatchAttribute.RegularExpression);
writer.StaticMethodCall(KnownMetadata.Methods.Regex_IsMatch);
var end = writer.IfFalseThen();
WriteFailureResult(writer, validationKind, CommonResults.RegularExpressionWasNotMatch.WithValues(property.ReflectedType.Name, property.Name));
writer.Return();
writer.MarkLabel(end);
}
private IEnumerable <Action <Label> > WriteUnrolledCatchBlocks(ILWriter writer, IImmutableQueue <Type> exceptionTypes, LocalBuilder shouldRetry, LocalBuilder currentExecutionAttempt)
{
var handleException = KnownMetadata.Methods.IExceptionAwareAction_HandleException;
foreach (var exceptionType in exceptionTypes)
{
yield return(endOfTryCatch =>
{
var handleSpecificException = handleException.MakeGenericMethod(exceptionType);
Action catchBlockBody = () =>
{
var endOfCatch = writer.DefineLabel();
var localException = writer.DeclareLocal(exceptionType);
writer.SetLocal(localException);
writer.LoadFirstParameter(); //Exception-aware instance
writer.LoadLocal(localException);
writer.LoadLocal(currentExecutionAttempt);
writer.InstanceMethodCall(handleSpecificException);
//The handler refusing to handle it indicates that we should perform a retry.
var wasHandled = writer.IfFalseThen();
writer.LoadTrue();
writer.SetLocal(shouldRetry);
writer.GoTo(endOfCatch);
writer.MarkLabel(wasHandled);
writer.LoadFalse();
writer.SetLocal(shouldRetry);
writer.MarkLabel(endOfCatch);
};
writer.CatchBlock(exceptionType, endOfTryCatch, catchBlockBody);
});
}
}
void WriteTranslatorBody <TFrom, TTo>(ILWriter writer)
{
var sourceProperties = typeof(TFrom).GetPublicPropertiesWithGetter();
var targetProperties = typeof(TTo).GetPublicPropertiesWithSetter().ToDictionary(p => p.Name);
var targetedSourceProperties = sourceProperties.GetTranslatableProperties <TTo>();
if (targetProperties.Count == 0)
{
writer.ReturnNull();
return;
}
var localTargetInstance = writer.DeclareLocal <TTo>();
writer.New <TTo>();
writer.SetLocal(localTargetInstance);
foreach (var sourceProperty in sourceProperties)
{
var explicitMapping = GetExplicitMappingIfPresent <TTo>(sourceProperty);
var targetName = (explicitMapping == null) ? sourceProperty.Name : explicitMapping.PropertyName;
if (!targetProperties.ContainsKey(targetName))
{
if (this.shouldThrowExceptions)
{
throw new PropertyIsMissingException();
}
continue;
}
var targetProperty = targetProperties[targetName];
var propertiesAreSameType = sourceProperty.PropertyType == targetProperty.PropertyType;
if (!propertiesAreSameType && !sourceProperty.PropertyType.HasConversionTo(targetProperty.PropertyType))
{
if (this.shouldThrowExceptions)
{
throw new PropertyTypeMismatchException();
}
continue;
}
var localSourceValue = writer.DeclareLocal(sourceProperty.PropertyType);
writer.LoadFirstParameter();
writer.GetPropertyValue(sourceProperty);
writer.SetLocal(localSourceValue);
writer.LoadLocal(localTargetInstance);
writer.LoadLocal(localSourceValue);
if (!propertiesAreSameType)
{
writer.Cast(sourceProperty.PropertyType, targetProperty.PropertyType);
}
writer.SetPropertyValue(targetProperty);
}
writer.LoadLocal(localTargetInstance);
writer.Return();
writer.VerifyStack();
}
private void WriteLogBody(ILWriter writer, Type type, MemberInfo[] loggableMembers)
{
var localTypedInstance = writer.DeclareLocal(type);
writer.LoadFirstParameter();
writer.Cast(typeof(object), type);
writer.SetLocal(localTypedInstance);
//TODO: Recurse into loggable members
foreach (var member in loggableMembers)
{
var logAttributes = member.GetCustomAttributes <LogAttribute>().ToArray();
if (logAttributes.Length == 0)
{
continue;
}
//TODO: Support multiple attributes per member
var attribute = logAttributes[0];
if (attribute.Ignore)
{
continue;
}
if (CanWriteToLog(attribute.Visibility))
{
LocalBuilder localValue;
LocalBuilder localLogItem = writer.DeclareLocal <CustomLoggableMember>();
switch (member.MemberType)
{
case MemberTypes.Field:
var field = (FieldInfo)member;
localValue = writer.DeclareLocal(field.FieldType);
writer.LoadLocal(localTypedInstance);
writer.LoadField(field);
writer.SetLocal(localValue);
break;
case MemberTypes.Property:
var property = (PropertyInfo)member;
localValue = writer.DeclareLocal(property.PropertyType);
writer.LoadLocal(localTypedInstance);
writer.GetPropertyValue(property);
writer.SetLocal(localValue);
break;
default:
var message = String.Format("Encountered loggable member '{0}' that was not supported in IL generation", member.Name);
System.Diagnostics.Debug.Fail(message);
throw new ILGenerationException(message);
}
writer.New <CustomLoggableMember>();
writer.SetLocal(localLogItem);
writer.LoadLocal(localLogItem);
writer.LoadInt32((int)attribute.Visibility);
writer.SetPropertyValue(typeof(CustomLoggableMember).GetProperty("MemberVisibility"));
writer.LoadLocal(localLogItem);
writer.TypeOf(type);
writer.Cast(localValue.LocalType, typeof(Type));
writer.SetPropertyValue(KnownMetadata.Properties.CustomLoggableMember_OwningType);
writer.LoadLocal(localLogItem);
writer.LoadString(member.Name);
writer.SetPropertyValue(KnownMetadata.Properties.CustomLoggableMember_MemberName);
writer.LoadLocal(localLogItem);
writer.TypeOf(localValue.LocalType);
writer.Cast(localValue.LocalType, typeof(Type));
writer.SetPropertyValue(KnownMetadata.Properties.CustomLoggableMember_MemberType);
writer.LoadLocal(localLogItem);
writer.LoadLocal(localValue);
writer.SetPropertyValue(KnownMetadata.Properties.CustomLoggableMember_MemberValue);
writer.LoadSecondParameter();
writer.LoadLocal(localLogItem);
writer.ActionDelegateMethodCall <CustomLoggableMember>();
}
}
writer.Return();
}
private void WriteIntegerRange(ILWriter writer, PropertyInfo property, IntegerRangeAttribute integerRangeAttribute)
{
var validationKind = ValidationKind.IntegerRange;
var signedSet = new HashSet <Type>()
{
typeof(sbyte),
typeof(short),
typeof(int),
typeof(long)
};
var unsignedSet = new HashSet <Type>()
{
typeof(byte),
typeof(ushort),
typeof(uint),
typeof(ulong)
};
LocalBuilder local;
if (signedSet.Contains(property.PropertyType))
{
local = writer.DeclareLocal <long>();
}
else if (unsignedSet.Contains(property.PropertyType))
{
local = writer.DeclareLocal <ulong>();
}
else
{
WriteNotApplicableResult(writer, validationKind);
writer.Return();
return;
}
writer.LoadFirstParameter();
writer.GetPropertyValue(property);
writer.Cast(property.PropertyType, local.LocalType);
writer.SetLocal(local);
if (integerRangeAttribute.HasMinimum && integerRangeAttribute.HasMaximum)
{
if (integerRangeAttribute.Minimum > integerRangeAttribute.Maximum)
{
var message = CommonErrors.IntegerRangeValidationHasMinGreaterThanMax.WithValues(property.ReflectedType.Name, property.Name);
throw new IncorrectValidationAttributeException(typeof(IntegerRangeAttribute), message);
}
}
if (integerRangeAttribute.HasMinimum)
{
writer.LoadLocal(local);
writer.LoadInt64(integerRangeAttribute.Minimum);
var isGreaterThanOrEqual = writer.IfLessThan();
WriteFailureResult(writer, validationKind, CommonResults.IntegerPropertyIsTooLow.WithValues(property.ReflectedType.Name, property.Name, integerRangeAttribute.Minimum));
writer.Return();
writer.MarkLabel(isGreaterThanOrEqual);
}
if (integerRangeAttribute.HasMaximum)
{
writer.LoadLocal(local);
writer.LoadInt64(integerRangeAttribute.Maximum);
var isLessThanOrEqual = writer.IfGreaterThan();
WriteFailureResult(writer, validationKind, CommonResults.IntegerPropertyIsTooHigh.WithValues(property.ReflectedType.Name, property.Name, integerRangeAttribute.Maximum));
writer.Return();
writer.MarkLabel(isLessThanOrEqual);
}
}