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 WriteNotApplicableResult(ILWriter writer, ValidationKind kind)
{
var notApplicable = KnownMetadata.Methods.ValidationResult_NotApplicable;
writer.LoadInt32((int)kind);
writer.StaticMethodCall(notApplicable);
}
private void WriteFailureResult(ILWriter writer, ValidationKind kind, string message)
{
var failure = KnownMetadata.Methods.ValidationResult_Failure;
writer.LoadInt32((int)kind);
writer.LoadString(message);
writer.StaticMethodCall(failure);
}
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();
}