protected override void CacheMetadata(CodeActivityMetadata metadata)
{
MethodInfo oldGetMethod = this.getMethod;
MethodInfo oldSetMethod = this.setMethod;
if (!typeof(TOperand).IsValueType)
{
metadata.AddValidationError(SR.TypeMustbeValueType(typeof(TOperand).Name));
}
if (typeof(TOperand).IsEnum)
{
metadata.AddValidationError(SR.TargetTypeCannotBeEnum(this.GetType().Name, this.DisplayName));
}
else if (String.IsNullOrEmpty(this.PropertyName))
{
metadata.AddValidationError(SR.ActivityPropertyMustBeSet("PropertyName", this.DisplayName));
}
else
{
this.propertyInfo = typeof(TOperand).GetProperty(this.PropertyName);
if (this.propertyInfo == null)
{
metadata.AddValidationError(SR.MemberNotFound(PropertyName, typeof(TOperand).Name));
}
}
bool isRequired = false;
if (this.propertyInfo != null)
{
this.setMethod = this.propertyInfo.GetSetMethod();
this.getMethod = this.propertyInfo.GetGetMethod();
if (setMethod == null)
{
metadata.AddValidationError(SR.MemberIsReadOnly(propertyInfo.Name, typeof(TOperand)));
}
if (setMethod != null && !setMethod.IsStatic)
{
isRequired = true;
}
}
MemberExpressionHelper.AddOperandLocationArgument <TOperand>(metadata, this.OperandLocation, isRequired);
if (this.propertyInfo != null)
{
if (MethodCallExpressionHelper.NeedRetrieve(this.getMethod, oldGetMethod, this.getFunc))
{
this.getFunc = MethodCallExpressionHelper.GetFunc(metadata, this.getMethod, funcCache, locker);
}
if (MethodCallExpressionHelper.NeedRetrieve(this.setMethod, oldSetMethod, this.setFunc))
{
this.setFunc = MethodCallExpressionHelper.GetFunc(metadata, this.setMethod, funcCache, locker, true);
}
}
}
/// <summary>
/// Caches the metadata.
/// </summary>
/// <param name="metadata">The metadata.</param>
protected override void CacheMetadata(CodeActivityMetadata metadata)
{
var foundError = false;
var oldConstructorInfo = this.constructorInfo;
// Loop through each argument, validate it, and if validation
// passed expose it to the metadata
var types = new Type?[this.Arguments.Count];
for (var i = 0; i < this.Arguments.Count; i++)
{
var argument = this.Arguments[i];
if (argument == null || argument.Expression == null)
{
metadata.AddValidationError(SR.ArgumentRequired("Arguments", typeof(New <TResult>)));
foundError = true;
}
else
{
var runtimeArgument = new RuntimeArgument("Argument" + i, this.arguments?[i].ArgumentType, this.arguments?[i].Direction, true);
metadata.Bind(this.arguments?[i], runtimeArgument);
metadata.AddArgument(runtimeArgument);
types[i] = this.Arguments[i].Direction == ArgumentDirection.In ? this.Arguments[i].ArgumentType : this.Arguments[i].ArgumentType?.MakeByRefType();
}
}
// If we didn't find any errors in the arguments then
// we can look for an appropriate constructor.
if (!foundError)
{
this.constructorInfo = typeof(TResult).GetConstructor(types);
if (this.constructorInfo == null && (!typeof(TResult).IsValueType || types.Length > 0))
{
metadata.AddValidationError(SR.ConstructorInfoNotFound(typeof(TResult).Name));
}
else if ((this.constructorInfo != oldConstructorInfo) || (this.function == null))
{
this.function = MethodCallExpressionHelper.GetFunc(metadata, this.constructorInfo, funcCache, locker);
}
}
}
/// <summary>
/// Caches the metadata.
/// </summary>
/// <param name="metadata">The metadata.</param>
protected override void CacheMetadata(CodeActivityMetadata metadata)
{
var oldGetMethod = this.getMethod;
var oldSetMethod = this.setMethod;
if (typeof(TOperand).IsValueType)
{
metadata.AddValidationError(SR.TargetTypeIsValueType(this.GetType().Name, this.DisplayName));
}
if (this.Indices.Count == 0)
{
metadata.AddValidationError(SR.IndicesAreNeeded(this.GetType().Name, this.DisplayName));
}
else
{
IndexerHelper.CacheMethod <TOperand, TItem>(this.Indices, ref this.getMethod, ref this.setMethod);
if (this.setMethod == null)
{
metadata.AddValidationError(SR.SpecialMethodNotFound("set_Item", typeof(TOperand).Name));
}
}
var operandArgument = new RuntimeArgument("Operand", typeof(TOperand), ArgumentDirection.In, true);
metadata.Bind(this.Operand, operandArgument);
metadata.AddArgument(operandArgument);
IndexerHelper.OnGetArguments(this.Indices, this.Result, metadata);
if (MethodCallExpressionHelper.NeedRetrieve(this.getMethod, oldGetMethod, this.getFunc))
{
this.getFunc = MethodCallExpressionHelper.GetFunc(metadata, this.getMethod, funcCache, locker);
}
if (MethodCallExpressionHelper.NeedRetrieve(this.setMethod, oldSetMethod, this.setFunc))
{
this.setFunc = MethodCallExpressionHelper.GetFunc(metadata, this.setMethod, funcCache, locker);
}
}
protected override void CacheMetadata(CodeActivityMetadata metadata)
{
MethodInfo oldGetMethod = this.getMethod;
MethodInfo oldSetMethod = this.setMethod;
bool isRequired = false;
if (typeof(TOperand).IsEnum)
{
metadata.AddValidationError(SR.TargetTypeCannotBeEnum(this.GetType().Name, this.DisplayName));
}
else if (typeof(TOperand).IsValueType)
{
metadata.AddValidationError(SR.TargetTypeIsValueType(this.GetType().Name, this.DisplayName));
}
if (string.IsNullOrEmpty(this.PropertyName))
{
metadata.AddValidationError(SR.ActivityPropertyMustBeSet("PropertyName", this.DisplayName));
}
else
{
Type operandType = typeof(TOperand);
this.propertyInfo = operandType.GetProperty(this.PropertyName);
if (this.propertyInfo == null)
{
metadata.AddValidationError(SR.MemberNotFound(PropertyName, typeof(TOperand).Name));
}
else
{
getMethod = this.propertyInfo.GetGetMethod();
setMethod = this.propertyInfo.GetSetMethod();
// Only allow access to public properties, EXCEPT that Locations are top-level variables
// from the other's perspective, not internal properties, so they're okay as a special case.
// E.g. "[N]" from the user's perspective is not accessing a nonpublic property, even though
// at an implementation level it is.
if (setMethod == null && TypeHelper.AreTypesCompatible(this.propertyInfo.DeclaringType, typeof(Location)) == false)
{
metadata.AddValidationError(SR.ReadonlyPropertyCannotBeSet(this.propertyInfo.DeclaringType, this.propertyInfo.Name));
}
if ((getMethod != null && !getMethod.IsStatic) || (setMethod != null && !setMethod.IsStatic))
{
isRequired = true;
}
}
}
MemberExpressionHelper.AddOperandArgument(metadata, this.Operand, isRequired);
if (propertyInfo != null)
{
if (MethodCallExpressionHelper.NeedRetrieve(this.getMethod, oldGetMethod, this.getFunc))
{
this.getFunc = MethodCallExpressionHelper.GetFunc(metadata, this.getMethod, funcCache, locker);
}
if (MethodCallExpressionHelper.NeedRetrieve(this.setMethod, oldSetMethod, this.setFunc))
{
this.setFunc = MethodCallExpressionHelper.GetFunc(metadata, this.setMethod, funcCache, locker);
}
}
}