public static bool GetFirstDerivedOfGenericType(Type type, Type genericType, out Type derivedType)
{
if (type.GetIsGenericType() && type.GetGenericTypeDefinition() == genericType)
{
derivedType = type;
return true;
}
if (type.GetBaseType() != null)
return GetFirstDerivedOfGenericType(type.GetBaseType(), genericType, out derivedType);
derivedType = null;
return false;
}
public static AppServerMetadata GetAppServerMetadata(Type serverType)
{
if (serverType == null)
throw new ArgumentNullException("serverType");
var topType = serverType;
var attType = typeof(AppServerMetadataAttribute);
while (true)
{
var atts = serverType.GetCustomAttributes(attType, false);
if (atts != null && atts.Length > 0)
{
var metatdata = atts[0] as AppServerMetadataAttribute;
return new AppServerMetadata(metatdata, topType);
}
var baseType = serverType.GetBaseType();
if (baseType == null)
return null;
serverType = baseType;
}
}
internal static Type GetFinalSystemType(Type type) {
while (typeof(IPythonObject).IsAssignableFrom(type) && !type.GetTypeInfo().IsDefined(typeof(DynamicBaseTypeAttribute), false)) {
type = type.GetBaseType();
}
return type;
}
private static Type GetCommonBaseType(Type xType, Type yType) {
if (xType.IsSubclassOf(yType)) {
return yType;
} else if (yType.IsSubclassOf(xType)) {
return xType;
} else if (xType == yType) {
return xType;
}
Type xBase = xType.GetBaseType();
Type yBase = yType.GetBaseType();
if (xBase != null) {
Type res = GetCommonBaseType(xBase, yType);
if (res != null) {
return res;
}
}
if (yBase != null) {
Type res = GetCommonBaseType(xType, yBase);
if (res != null) {
return res;
}
}
return null;
}
/// <summary>
/// Is this a type used for instances Python types (and not for the types themselves)?
/// </summary>
public static bool IsInstanceType(Type type) {
return type.FullName.IndexOf(NewTypeMaker.TypePrefix) == 0 ||
// Users can create sub-types of instance-types using __clrtype__ without using
// NewTypeMaker.TypePrefix
((type.GetBaseType() != null) && IsInstanceType(type.GetBaseType()));
}
/// <summary>
/// Converts a object to a string value and indicates its type and whether it successfully converted it or not
/// </summary>
/// <param name="value">Value to Convert</param>
/// <param name="newStringValue">New Converted Value</param>
/// <param name="valueType">Type of the original Value</param>
/// <returns>True if it was converted or false if it was not</returns>
internal static bool TryConvertPrimitiveValueToString(object value, out string newStringValue, out Type valueType)
{
valueType = null;
newStringValue = null;
if (value == null)
{
return true;
}
valueType = value.GetType();
if (valueType == typeof(bool))
{
var valueToConvert = (bool)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(byte))
{
var valueToConvert = (byte)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(char))
{
var valueToConvert = (char)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(DateTime))
{
var valueToConvert = (DateTime)value;
newStringValue = PlatformHelper.ConvertDateTimeToString(valueToConvert);
}
else if (valueType == typeof(DateTimeOffset))
{
var valueToConvert = (DateTimeOffset)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(decimal))
{
var valueToConvert = (decimal)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(double))
{
var valueToConvert = (double)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(float))
{
var valueToConvert = (float)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(Guid))
{
var valueToConvert = (Guid)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(int))
{
var valueToConvert = (int)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(long))
{
var valueToConvert = (long)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(sbyte))
{
var valueToConvert = (sbyte)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(short))
{
var valueToConvert = (short)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(string))
{
newStringValue = (string)value;
}
else if (valueType == typeof(TimeSpan))
{
var valueToConvert = (TimeSpan)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(uint))
{
var valueToConvert = (uint)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(ulong))
{
var valueToConvert = (ulong)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType == typeof(ushort))
{
var valueToConvert = (ushort)value;
newStringValue = XmlConvert.ToString(valueToConvert);
}
else if (valueType.GetBaseType() == typeof(Enum))
{
newStringValue = Enum.GetName(valueType, value);
if (newStringValue == null)
{
Type underlyingValueType;
TryConvertPrimitiveValueToString(DataUtilities.ConvertFromEnum(value), out newStringValue, out underlyingValueType);
}
}
else
{
return false;
}
return true;
}
/// <summary>
/// Provides generic type inference for a single parameter.
/// </summary>
/// <remarks>
/// For example:
/// M{T}(T x)
/// M{T}(IList{T} x)
/// M{T}(ref T x)
/// M{T}(T[] x)
/// M{T}(ref Dictionary{T,T}[] x)
/// </remarks>
public static Type GetInferedType(Type/*!*/ genericParameter, Type/*!*/ parameterType, Type inputType, Type/*!*/ argType, Dictionary<Type, Type>/*!*/ binding)
{
Debug.Assert(genericParameter.IsGenericParameter);
if (parameterType.IsGenericParameter) {
if (inputType != null) {
binding[genericParameter] = inputType;
if (ConstraintsViolated(inputType, genericParameter, binding)) {
return null;
}
}
return inputType;
}
if (parameterType.IsInterface()) {
return GetInferedTypeForInterface(genericParameter, parameterType, inputType, binding);
}
if (parameterType.IsArray) {
return binding[genericParameter] = MatchGenericParameter(genericParameter, argType, parameterType, binding);
}
if (parameterType.IsByRef) {
if (CompilerHelpers.IsStrongBox(argType)) {
argType = argType.GetGenericArguments()[0];
}
return binding[genericParameter] = MatchGenericParameter(genericParameter, argType, parameterType.GetElementType(), binding);
}
// see if we're anywhere in our base class hierarchy
Type genType = parameterType.GetGenericTypeDefinition();
while (argType != typeof(object)) {
if (argType.IsGenericType() && argType.GetGenericTypeDefinition() == genType) {
// TODO: Merge w/ the interface logic?
return binding[genericParameter] = MatchGenericParameter(genericParameter, argType, parameterType, binding);
}
argType = argType.GetBaseType();
}
return null;
}
private static Type[] GetTypeHierarchy(Type type, out PropertyInfo[] keyProperties, out bool hasProperties)
{
keyProperties = ClientTypeUtil.GetKeyPropertiesOnType(type, out hasProperties);
List<Type> list = new List<Type>();
if (keyProperties != null)
{
Type declaringType;
if (keyProperties.Length > 0)
{
declaringType = keyProperties[0].DeclaringType;
}
else
{
declaringType = type;
while (!declaringType.GetCustomAttributes(false).OfType<DataServiceEntityAttribute>().Any<DataServiceEntityAttribute>() && (declaringType.GetBaseType() != null))
{
declaringType = declaringType.GetBaseType();
}
}
do
{
list.Insert(0, type);
}
while ((type != declaringType) && ((type = type.GetBaseType()) != null));
}
else
{
do
{
list.Insert(0, type);
}
while (((type = type.GetBaseType()) != null) && ClientTypeUtil.GetPropertiesOnType(type, false).Any<PropertyInfo>());
}
return list.ToArray();
}
/// <summary>Finds whether a non-primitive implements IEnumerable and returns element type if it does.</summary>
/// <param name="seqType">Type to check.</param>
/// <returns>Type of the element if the <paramref name="seqType"/> implements IEnumerable{T}. Otherwise null.</returns>
private static Type FindIEnumerableForNonPrimitiveType(Type seqType)
{
Debug.Assert(seqType != null, "seqType != null");
Debug.Assert(seqType != typeof(string) && !seqType.IsPrimitive() && !seqType.IsValueType() && Nullable.GetUnderlyingType(seqType) == null, "seqType must not be a primitive type (nullable or not)");
if (seqType.IsArray)
{
return typeof(IEnumerable<>).MakeGenericType(seqType.GetElementType());
}
if (seqType.IsGenericType())
{
foreach (Type arg in seqType.GetGenericArguments())
{
Type ienum = typeof(IEnumerable<>).MakeGenericType(arg);
if (ienum.IsAssignableFrom(seqType))
{
return ienum;
}
}
}
IEnumerable<Type> ifaces = seqType.GetInterfaces();
if (ifaces != null)
{
foreach (Type iface in ifaces)
{
Type ienum = FindIEnumerable(iface);
if (ienum != null)
{
return ienum;
}
}
}
if (seqType.GetBaseType() != null && seqType.GetBaseType() != typeof(object))
{
return FindIEnumerable(seqType.GetBaseType());
}
return null;
}
public static MethodInfo GetMethod( Type type, string name, Type[] parameterTypes )
{
while ( type != typeof( object ) && type != null )
{
#if !NETFX_CORE && !NETSTANDARD1_1 && !NETSTANDARD1_3
var candidate =
type.GetMethod(
name,
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly,
null,
parameterTypes,
null
);
if ( candidate != null )
{
return candidate;
}
#else
var candidates =
type.GetTypeInfo().GetDeclaredMethods( name )
.Where( m => !m.IsGenericMethod && !m.IsStatic && m.GetParameters().Select( p => p.ParameterType ).SequenceEqual( parameterTypes ) )
.ToArray();
switch ( candidates.Length )
{
case 0:
{
break;
}
case 1:
{
return candidates[ 0 ];
}
default:
{
// CallingConvention, static-instance, or so -- extremely rare case.
throw new AmbiguousMatchException();
}
}
#endif // !NETFX_CORE && !NETSTANDARD1_1 && !NETSTANDARD1_3
type = type.GetBaseType();
}
return null;
}
public static FieldInfo GetField( Type type, string name )
{
while ( type != typeof( object ) && type != null )
{
var candidate =
#if !NETFX_CORE && !NETSTANDARD1_1 && !NETSTANDARD1_3
type.GetField(
name,
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly
);
#else
type.GetTypeInfo().GetDeclaredField( name );
#endif // !NETFX_CORE && !NETSTANDARD1_1 && !NETSTANDARD1_3
if ( candidate != null )
{
return candidate;
}
type = type.GetBaseType();
}
return null;
}
private static Type FindIEnumerableForNonPrimitiveType(Type seqType)
{
if (seqType.IsArray)
{
return typeof(IEnumerable<>).MakeGenericType(new Type[] { seqType.GetElementType() });
}
if (seqType.IsGenericType())
{
foreach (Type type in seqType.GetGenericArguments())
{
Type type2 = typeof(IEnumerable<>).MakeGenericType(new Type[] { type });
if (type2.IsAssignableFrom(seqType))
{
return type2;
}
}
}
IEnumerable<Type> interfaces = seqType.GetInterfaces();
if (interfaces != null)
{
foreach (Type type3 in interfaces)
{
Type type4 = FindIEnumerable(type3);
if (type4 != null)
{
return type4;
}
}
}
if ((seqType.GetBaseType() != null) && (seqType.GetBaseType() != typeof(object)))
{
return FindIEnumerable(seqType.GetBaseType());
}
return null;
}