public static bool ContainsGenericParameters(this IType type, Predicate <IType> furtherRestriction)
{
if (type.IsGenericConstruct && type is IGenericType)
{
if (((IGenericType)(type)).IsGenericDefinition)
{
return(furtherRestriction(type));
}
else
{
return(((IGenericType)(type)).GenericParameters.ContainsGenericParameters(furtherRestriction));
}
}
else
{
switch (type.ElementClassification)
{
case TypeElementClassification.Array:
case TypeElementClassification.Nullable:
case TypeElementClassification.Pointer:
case TypeElementClassification.Reference:
return(type.ElementType.ContainsGenericParameters(furtherRestriction));
case TypeElementClassification.ModifiedType:
IModifiedType mType = type as IModifiedType;
if (mType != null)
{
return(mType.ElementType.ContainsGenericParameters() ||
mType.Modifiers.Any(k => k.ModifierType.ContainsGenericParameters(furtherRestriction)));
}
break;
}
return(type.IsGenericTypeParameter && furtherRestriction(type));
}
}
internal static bool ContainsSymbols(this IType type)
{
if (type.IsGenericTypeParameter && !type.IsGenericConstruct)
{
return(((IGenericType)(type)).ContainsSymbols());
}
switch (type.ElementClassification)
{
case TypeElementClassification.Array:
case TypeElementClassification.Nullable:
case TypeElementClassification.Pointer:
case TypeElementClassification.Reference:
return(type.ElementType.ContainsSymbols());
break;
case TypeElementClassification.ModifiedType:
IModifiedType mType = type as IModifiedType;
if (mType != null)
{
return(mType.ElementType.ContainsSymbols() ||
mType.Modifiers.Any(k => k.ModifierType.ContainsSymbols()));
}
break;
}
return(type is ISymbolType);
}
public static IType GetFirstGenericParameter(this IType type, Predicate <IType> furtherRestriction)
{
if (type.IsGenericConstruct && type is IGenericType)
{
if (((IGenericType)(type)).IsGenericDefinition)
{
return(((IGenericType)(type)).GenericParameters.FirstOrDefault(k => furtherRestriction(k)));
}
else
{
return(((IGenericType)(type)).GenericParameters.GetFirstGenericParameter(furtherRestriction));
}
}
else
{
switch (type.ElementClassification)
{
case TypeElementClassification.Array:
case TypeElementClassification.Nullable:
case TypeElementClassification.Pointer:
case TypeElementClassification.Reference:
return(type.ElementType.GetFirstGenericParameter(furtherRestriction));
case TypeElementClassification.ModifiedType:
IModifiedType mType = type as IModifiedType;
if (mType != null)
{
return(mType.ElementType.GetFirstGenericParameter(furtherRestriction) ??
mType.Modifiers.Where(k => k.ModifierType.ContainsGenericParameters(furtherRestriction)).Select(k => k.ModifierType.GetFirstGenericParameter(furtherRestriction)).FirstOrDefault());
}
break;
}
return(type.IsGenericTypeParameter && furtherRestriction(type)
? type
: null);
}
}
