protected virtual void AppendReflectedMethod(StringBuilder builder, AstReflectedMethod reflectedMethod)
{
builder.Append(reflectedMethod);
}
private int GetDistanceForAll(AstReflectedMethod reflected, IEnumerable<Type> parameterTypes, IEnumerable<Type> argumentTypes, IDictionary<Type, ISet<Type>> genericTheories)
{
var totalDistance = 0;
using (var parameterTypeEnumerator = parameterTypes.GetEnumerator())
using (var argumentTypeEnumerator = argumentTypes.GetEnumerator()) {
while (parameterTypeEnumerator.MoveNext()) {
if (!argumentTypeEnumerator.MoveNext())
return -1;
var distance = GetDistance(parameterTypeEnumerator.Current, argumentTypeEnumerator.Current, reflected, genericTheories);
if (distance == -1)
return -1;
totalDistance += distance;
}
if (argumentTypeEnumerator.MoveNext())
return -1;
}
return totalDistance;
}
private Tuple<IAstMethodReference, int> GetOrMakeMatch(AstReflectedMethod reflected, IEnumerable<Type> parameterTypes, IEnumerable<Type> argumentTypes)
{
var genericTheories = new Dictionary<Type, ISet<Type>>();
var distance = GetDistanceForAll(reflected, parameterTypes, argumentTypes, genericTheories);
if (distance == -1)
return null;
if (reflected.Method.IsGenericMethodDefinition) {
var genericParameters = reflected.Method.GetGenericArguments();
var genericArguments = new Type[genericParameters.Length];
for (var i = 0; i < genericParameters.Length; i++) {
var theories = genericTheories.GetValueOrDefault(genericParameters[i]);
if (theories == null)
return null;
var aggregate = ReconcileGenericTheories(theories);
if (aggregate == null)
return null;
genericArguments[i] = aggregate;
}
var generic = reflected.Method.MakeGenericMethod(genericArguments);
return Tuple.Create((IAstMethodReference)new AstReflectedMethod(generic), distance);
}
return Tuple.Create((IAstMethodReference)reflected, distance);
}
private int GetDistance(Type parameterType, Type argumentType, AstReflectedMethod reflected, IDictionary<Type, ISet<Type>> genericTheories)
{
var argumentCompatibleTypes = GetCompatibleTypes(argumentType);
var distance = argumentCompatibleTypes.GetValueOrDefault(parameterType, -1);
if (distance != -1)
return distance;
if (!reflected.Method.IsGenericMethodDefinition)
return -1;
if (CanMatchPotentialGeneric(parameterType, argumentType, argumentCompatibleTypes, genericTheories))
return 0;
return -1;
}