private static ValueGetter GetValueGetter(object target, string name)
{
return(PropertyDescriptorValueGetter.GetPropertyDescriptorValueGetter(target, name)
?? GenericDictionaryValueGetter.GetGenericDictionaryValueGetter(target, name)
?? DictionaryValueGetter.GetDictionaryValueGetter(target, name)
?? MethodInfoValueGetter.GetMethodInfoValueGetter(target, name)
?? PropertyInfoValueGetter.GetPropertyInfoValueGetter(target, name)
?? FieldInfoValueGetter.GetFieldInfoValueGetter(target, name)
?? (ValueGetter) new NullValueGetter());
}
public void Visit(GenericDictionaryValueGetter getter)
{
var containsKeyMethod = getter.DictionaryType.GetMethod("ContainsKey");
CompiledGetter =
Expression.Condition(
Expression.Call(_dataParameter, containsKeyMethod, Expression.Constant(getter.Key)),
Expression.Call(_dataParameter, getter.GetMethod, Expression.Constant(getter.Key)),
Expression.Default(getter.GetMethod.ReturnType));
}