public static void ProcessWeavableProperties(ILogger log, IEnumerable <PropertyWeaverSet> properties)
{
foreach (var propertyInfo in properties)
{
var property = propertyInfo.Property;
if (property.SetMethod == null)
{
log.Error($"The property `{property.Name}` on type `{property.DeclaringType.FullName}` cannot be rewritten to include validation because it does not have a setter.");
continue;
}
var appender = new IlProcessorAppender(property.SetMethod, null);
foreach (var weaver in propertyInfo.Weavers)
{
if (!weaver.Weaver.IsValidOn(property.PropertyType))
{
log.Error($"The attribute `{weaver.Weaver.AttributeTypeName}` cannot be applied to a property of type `{property.PropertyType.Name}`");
}
else
{
weaver.Weaver.Execute(weaver.GetInstantiatedAttribute(), property, appender);
property.CustomAttributes.Remove(weaver.CustomAttribute);
}
}
}
}
public static void ProcessWeavableParameters(ILogger log, IEnumerable <ParameterWeaverSet> parameters)
{
foreach (var parameterInfo in parameters)
{
var parameter = parameterInfo.Parameter;
var method = parameterInfo.Method;
Instruction firstInstruction;
if (parameterInfo.Method.IsConstructor)
{
// We make sure the validation occurs after the this/base call
// in order to preserve the behaviour that the C# compiler would
// have generated had the checks been written by hand
firstInstruction = parameterInfo.Method.FindChainedCall();
}
else
{
firstInstruction = null;
}
var appender = new IlProcessorAppender(method, firstInstruction);
foreach (var weaver in parameterInfo.Weavers)
{
if (!weaver.Weaver.IsValidOn(parameter.ParameterType))
{
log.Error($"The attribute `{weaver.Weaver.AttributeTypeName}` cannot be applied to a method parameter of type `{parameter.ParameterType.Name}`");
}
else
{
weaver.Weaver.Execute(weaver.GetInstantiatedAttribute(), parameter, appender);
parameter.CustomAttributes.Remove(weaver.CustomAttribute);
}
}
}
}
public void Execute(Attribute attribute, PropertyDefinition property, IlProcessorAppender ilProcessor) => ExecuteProperty(attribute, property, ilProcessor);
public void Execute(Attribute attribute, ParameterDefinition parameter, IlProcessorAppender ilProcessor) => ExecuteParameter(attribute, parameter, ilProcessor);
