public static bool TryGetTypeConversion(Type fromType, Type toType, out TypeConversion typeConversion)
{
if (fromType == null)
{
throw new ArgumentNullException("fromType");
}
if (toType == null)
{
throw new ArgumentNullException("toType");
}
var key = new TypeTuple2(fromType, toType);
lock (Conversions)
return(Conversions.TryGetValue(key, out typeConversion));
}
private static void SetNaturalConversion(float quality, Type fromType, params Type[] toTypes)
{
if (fromType == null)
{
throw new ArgumentNullException("fromType");
}
if (toTypes == null)
{
throw new ArgumentNullException("toTypes");
}
foreach (var toType in toTypes)
{
var key = new TypeTuple2(fromType, toType);
Conversions.Add(key, new TypeConversion(quality, isNatural: true));
}
}
internal static void UpdateConversions(IEnumerable <TypeDescription> typeDescriptions)
{
if (typeDescriptions == null)
{
throw new ArgumentNullException("typeDescriptions");
}
lock (Conversions)
{
foreach (var typeDescription in typeDescriptions)
{
foreach (var conversionMethod in typeDescription.Conversions)
{
var key = new TypeTuple2(conversionMethod.GetParameterType(0), conversionMethod.GetParameterType(-1));
var explicitConversionMethod = conversionMethod.IsImplicitOperator ? default(MemberDescription) : conversionMethod;
var implicitConversionMethod = conversionMethod.IsImplicitOperator ? conversionMethod : default(MemberDescription);
var conversion = default(TypeConversion);
var newConversion = default(TypeConversion);
var cost = conversionMethod.IsImplicitOperator ? TypeConversion.QUALITY_IMPLICIT_CONVERSION : TypeConversion.QUALITY_EXPLICIT_CONVERSION;
if (Conversions.TryGetValue(key, out conversion) == false)
{
newConversion = new TypeConversion(cost, false, implicitConversionMethod, explicitConversionMethod);
}
else
{
newConversion = conversion.Expand(implicitConversionMethod, explicitConversionMethod);
}
if (newConversion != conversion)
{
Conversions[key] = newConversion;
}
}
foreach (var baseType in typeDescription.BaseTypes)
{
var key = new TypeTuple2(typeDescription, baseType);
var cost = baseType == typeDescription ? TypeConversion.QUALITY_SAME_TYPE : TypeConversion.QUALITY_INHERITANCE_HIERARCHY;
var conversion = default(TypeConversion);
if (Conversions.TryGetValue(key, out conversion))
{
conversion = new TypeConversion(cost, true, conversion.Implicit, conversion.Explicit);
}
else
{
conversion = new TypeConversion(cost, true, null, null);
}
Conversions[key] = conversion;
}
foreach (var baseType in typeDescription.Interfaces)
{
var key = new TypeTuple2(typeDescription, baseType);
var cost = baseType == typeDescription ? TypeConversion.QUALITY_SAME_TYPE : TypeConversion.QUALITY_INHERITANCE_HIERARCHY;
var conversion = default(TypeConversion);
if (Conversions.TryGetValue(key, out conversion))
{
conversion = new TypeConversion(cost, true, conversion.Implicit, conversion.Explicit);
}
else
{
conversion = new TypeConversion(cost, true, null, null);
}
Conversions[key] = conversion;
}
if (typeDescription.IsEnum)
{
var fromEnumKey = new TypeTuple2(typeDescription, typeDescription.UnderlyingType);
var toEnumKey = new TypeTuple2(typeDescription.UnderlyingType, typeDescription);
Conversions[fromEnumKey] = new TypeConversion(TypeConversion.QUALITY_IN_PLACE_CONVERSION, true);
Conversions[toEnumKey] = new TypeConversion(TypeConversion.QUALITY_IN_PLACE_CONVERSION, true);
}
}
}
}