ConstructorInfo GetPeerConstructor(JniObjectReference instance, Type fallbackType)
{
var klass = JniEnvironment.Types.GetObjectClass(instance);
var jniTypeName = JniEnvironment.Types.GetJniTypeNameFromClass(klass);
Type type = null;
while (jniTypeName != null)
{
type = Runtime.TypeManager.GetType(JniTypeSignature.Parse(jniTypeName));
if (type != null)
{
var ctor = GetActivationConstructor(type);
if (ctor != null)
{
JniObjectReference.Dispose(ref klass);
return(ctor);
}
}
var super = JniEnvironment.Types.GetSuperclass(klass);
jniTypeName = super.IsValid
? JniEnvironment.Types.GetJniTypeNameFromClass(super)
: null;
JniObjectReference.Dispose(ref klass, JniObjectReferenceOptions.CopyAndDispose);
klass = super;
}
JniObjectReference.Dispose(ref klass, JniObjectReferenceOptions.CopyAndDispose);
return(GetActivationConstructor(fallbackType));
}
public virtual IEnumerable <Type> GetTypes(JniTypeSignature typeSignature)
{
if (typeSignature.SimpleReference == null)
{
return(EmptyTypeArray);
}
return(CreateGetTypesEnumerator(typeSignature));
}
static JniTypeSignature GetCachedTypeSignature(ref JniTypeSignature field, string signature, int arrayRank = 0, bool keyword = false)
{
if (!field.IsValid)
{
field = new JniTypeSignature(signature, arrayRank, keyword);
}
return(field);
}
internal Type GetRuntimeType(JniObjectReference reference)
{
JniTypeSignature signature;
if (!JniTypeSignature.TryParse(JniEnvironment.Types.GetJniTypeNameFromInstance(reference), out signature))
{
return(null);
}
return(Runtime.TypeManager.GetType(signature));
}
static JniObjectReference _NewArray(int length)
{
var info = JniEnvironment.Runtime.TypeManager.GetTypeSignature(typeof(T));
if (info.SimpleReference == null)
{
info = new JniTypeSignature("java/lang/Object", info.ArrayRank);
}
if (info.IsKeyword && info.ArrayRank == 0)
{
info = info.GetPrimitivePeerTypeSignature();
}
using (var t = new JniType(info.Name)) {
return(JniEnvironment.Arrays.NewObjectArray(length, t.PeerReference, new JniObjectReference()));
}
}
IEnumerable <Type> CreateGetTypesEnumerator(JniTypeSignature typeSignature)
{
foreach (var type in GetTypesForSimpleReference(typeSignature.SimpleReference))
{
if (typeSignature.ArrayRank == 0)
{
yield return(type);
continue;
}
#if !XA_INTEGRATION
if (typeSignature.ArrayRank > 0)
{
var rank = typeSignature.ArrayRank;
var arrayType = type;
if (typeSignature.IsKeyword)
{
arrayType = typeof(JavaPrimitiveArray <>).MakeGenericType(arrayType);
rank--;
}
while (rank-- > 0)
{
arrayType = typeof(JavaObjectArray <>).MakeGenericType(arrayType);
}
yield return(arrayType);
}
#endif // !XA_INTEGRATION
if (typeSignature.ArrayRank > 0)
{
var rank = typeSignature.ArrayRank;
var arrayType = type;
while (rank-- > 0)
{
arrayType = arrayType.MakeArrayType();
}
yield return(arrayType);
}
}
}
public JniTypeSignature GetTypeSignature(Type type)
{
AssertValid();
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (type.ContainsGenericParameters)
{
throw new ArgumentException($"'{type}' contains a generic type definition. This is not supported.", nameof(type));
}
type = GetUnderlyingType(type, out int rank);
JniTypeSignature signature = JniTypeSignature.Empty;
if (GetBuiltInTypeSignature(type, ref signature))
{
return(signature.AddArrayRank(rank));
}
if (GetBuiltInTypeArraySignature(type, ref signature))
{
return(signature.AddArrayRank(rank));
}
var simpleRef = GetSimpleReference(type);
if (simpleRef != null)
{
return(new JniTypeSignature(simpleRef, rank, false));
}
var name = type.GetCustomAttribute <JniTypeSignatureAttribute> (inherit: false);
if (name != null)
{
return(new JniTypeSignature(name.SimpleReference, name.ArrayRank + rank, name.IsKeyword));
}
var isGeneric = type.IsGenericType;
var genericDef = isGeneric ? type.GetGenericTypeDefinition() : type;
if (isGeneric)
{
if (genericDef == typeof(JavaArray <>) || genericDef == typeof(JavaObjectArray <>))
{
var r = GetTypeSignature(type.GenericTypeArguments [0]);
return(r.AddArrayRank(rank + 1));
}
}
if (isGeneric)
{
simpleRef = GetSimpleReference(genericDef);
if (simpleRef != null)
{
return(new JniTypeSignature(simpleRef, rank, false));
}
}
return(default);
public Type GetType(JniTypeSignature typeSignature)
{
AssertValid();
return(GetTypes(typeSignature).FirstOrDefault());
}
public Type GetType(JniTypeSignature typeSignature)
{
return(GetTypes(typeSignature).FirstOrDefault());
}
static bool GetBuiltInTypeSignature(Type type, ref JniTypeSignature signature)
{
switch (Type.GetTypeCode(type))
{
case TypeCode.String:
signature = GetCachedTypeSignature(ref __StringTypeSignature, "java/lang/String");
return(true);
case TypeCode.Boolean:
signature = GetCachedTypeSignature(ref __BooleanTypeSignature, "Z", arrayRank: 0, keyword: true);
return(true);
case TypeCode.SByte:
signature = GetCachedTypeSignature(ref __SByteTypeSignature, "B", arrayRank: 0, keyword: true);
return(true);
case TypeCode.Char:
signature = GetCachedTypeSignature(ref __CharTypeSignature, "C", arrayRank: 0, keyword: true);
return(true);
case TypeCode.Int16:
signature = GetCachedTypeSignature(ref __Int16TypeSignature, "S", arrayRank: 0, keyword: true);
return(true);
case TypeCode.Int32:
signature = GetCachedTypeSignature(ref __Int32TypeSignature, "I", arrayRank: 0, keyword: true);
return(true);
case TypeCode.Int64:
signature = GetCachedTypeSignature(ref __Int64TypeSignature, "J", arrayRank: 0, keyword: true);
return(true);
case TypeCode.Single:
signature = GetCachedTypeSignature(ref __SingleTypeSignature, "F", arrayRank: 0, keyword: true);
return(true);
case TypeCode.Double:
signature = GetCachedTypeSignature(ref __DoubleTypeSignature, "D", arrayRank: 0, keyword: true);
return(true);
case TypeCode.DateTime:
case TypeCode.DBNull:
case TypeCode.Decimal:
case TypeCode.Empty:
case TypeCode.UInt16:
case TypeCode.UInt32:
case TypeCode.UInt64:
return(false);
}
if (type == typeof(void))
{
signature = GetCachedTypeSignature(ref __VoidTypeSignature, "V", arrayRank: 0, keyword: true);
return(true);
}
if (!type.IsValueType)
{
return(false);
}
if (type == typeof(Boolean?))
{
signature = GetCachedTypeSignature(ref __BooleanNullableTypeSignature, "java/lang/Boolean");
return(true);
}
if (type == typeof(SByte?))
{
signature = GetCachedTypeSignature(ref __SByteNullableTypeSignature, "java/lang/Byte");
return(true);
}
if (type == typeof(Char?))
{
signature = GetCachedTypeSignature(ref __CharNullableTypeSignature, "java/lang/Character");
return(true);
}
if (type == typeof(Int16?))
{
signature = GetCachedTypeSignature(ref __Int16NullableTypeSignature, "java/lang/Short");
return(true);
}
if (type == typeof(Int32?))
{
signature = GetCachedTypeSignature(ref __Int32NullableTypeSignature, "java/lang/Integer");
return(true);
}
if (type == typeof(Int64?))
{
signature = GetCachedTypeSignature(ref __Int64NullableTypeSignature, "java/lang/Long");
return(true);
}
if (type == typeof(Single?))
{
signature = GetCachedTypeSignature(ref __SingleNullableTypeSignature, "java/lang/Float");
return(true);
}
if (type == typeof(Double?))
{
signature = GetCachedTypeSignature(ref __DoubleNullableTypeSignature, "java/lang/Double");
return(true);
}
return(false);
}
internal Type GetRuntimeType(JniObjectReference reference)
{
var signature = JniTypeSignature.Parse(JniEnvironment.Types.GetJniTypeNameFromInstance(reference));
return(Runtime.TypeManager.GetType(signature));
}