/// <summary>
/// Implement binding of generic methods using the subscript syntax [].
/// </summary>
public static IntPtr mp_subscript(IntPtr tp, IntPtr idx)
{
var self = (MethodBinding)GetManagedObject(tp);
Type[] types = Runtime.PythonArgsToTypeArray(idx);
if (types == null)
{
return(Exceptions.RaiseTypeError("type(s) expected"));
}
MethodInfo mi = MethodBinder.MatchParameters(self.m.info, types);
if (mi == null)
{
return(Exceptions.RaiseTypeError("No match found for given type params"));
}
var mb = new MethodBinding(self.m, self.target)
{
info = mi
};
Runtime.XIncref(mb.pyHandle);
return(mb.pyHandle);
}
/// <summary>
/// Implement explicit overload selection using subscript syntax ([]).
/// </summary>
public static IntPtr mp_subscript(IntPtr tp, IntPtr idx)
{
var self = (OverloadMapper)GetManagedObject(tp);
// Note: if the type provides a non-generic method with N args
// and a generic method that takes N params, then we always
// prefer the non-generic version in doing overload selection.
Type[] types = Runtime.PythonArgsToTypeArray(idx);
if (types == null)
{
return(Exceptions.RaiseTypeError("type(s) expected"));
}
MethodInfo mi = MethodBinder.MatchSignature(self.m.info, types);
if (mi == null)
{
var e = "No match found for signature";
return(Exceptions.RaiseTypeError(e));
}
var mb = new MethodBinding(self.m, self.target)
{
info = mi
};
return(mb.pyHandle);
}
int IComparer.Compare(object m1, object m2)
{
var me1 = (MethodBase)m1;
var me2 = (MethodBase)m2;
if (me1.DeclaringType != me2.DeclaringType)
{
// m2's type derives from m1's type, favor m2
if (me1.DeclaringType.IsAssignableFrom(me2.DeclaringType))
{
return(1);
}
// m1's type derives from m2's type, favor m1
if (me2.DeclaringType.IsAssignableFrom(me1.DeclaringType))
{
return(-1);
}
}
int p1 = MethodBinder.GetPrecedence((MethodBase)m1);
int p2 = MethodBinder.GetPrecedence((MethodBase)m2);
if (p1 < p2)
{
return(-1);
}
if (p1 > p2)
{
return(1);
}
return(0);
}
/// <summary>
/// Implement binding of generic methods using the subscript syntax [].
/// </summary>
public static NewReference mp_subscript(BorrowedReference tp, BorrowedReference idx)
{
var self = (MethodBinding)GetManagedObject(tp) !;
Type[]? types = Runtime.PythonArgsToTypeArray(idx);
if (types == null)
{
return(Exceptions.RaiseTypeError("type(s) expected"));
}
MethodBase[] overloads = self.m.IsInstanceConstructor
? self.m.type.Value.GetConstructor(types) is { } ctor
? new[] { ctor }
: Array.Empty <MethodBase>()
: MethodBinder.MatchParameters(self.m.info, types);
if (overloads.Length == 0)
{
return(Exceptions.RaiseTypeError("No match found for given type params"));
}
MethodObject overloaded = self.m.WithOverloads(overloads);
var mb = new MethodBinding(overloaded, self.target, self.targetType);
return(mb.Alloc());
}
//====================================================================
// This is a hack. Generally, no managed class is considered callable
// from Python - with the exception of System.Delegate. It is useful
// to be able to call a System.Delegate instance directly, especially
// when working with multicast delegates.
//====================================================================
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw)
{
//ManagedType self = GetManagedObject(ob);
IntPtr tp = Runtime.PyObject_TYPE(ob);
ClassBase cb = (ClassBase)GetManagedObject(tp);
if (cb.type != typeof(System.Delegate))
{
Exceptions.SetError(Exceptions.TypeError,
"object is not callable");
return(IntPtr.Zero);
}
CLRObject co = (CLRObject)ManagedType.GetManagedObject(ob);
Delegate d = co.inst as Delegate;
BindingFlags flags = BindingFlags.Public |
BindingFlags.NonPublic |
BindingFlags.Instance |
BindingFlags.Static;
MethodInfo method = d.GetType().GetMethod("Invoke", flags);
MethodBinder binder = new MethodBinder(method);
return(binder.Invoke(ob, args, kw));
}
public MethodObject(string name, MethodInfo[] info) : base() {
this.name = name;
this.info = info;
binder = new MethodBinder();
for (int i = 0; i < info.Length; i++) {
binder.AddMethod((MethodInfo)info[i]);
}
}
public MethodObject(string name, MethodInfo[] info) : base()
{
this.name = name;
this.info = info;
binder = new MethodBinder();
for (int i = 0; i < info.Length; i++)
{
binder.AddMethod((MethodInfo)info[i]);
}
}
private void _MethodObject(string name, MethodInfo[] info)
{
this.name = name;
this.info = info;
binder = new MethodBinder();
for (int i = 0; i < info.Length; i++)
{
MethodInfo item = (MethodInfo)info[i];
binder.AddMethod(item);
if (item.IsStatic)
{
this.is_static = true;
}
}
}
private void _MethodObject(string name, MethodInfo[] info)
{
this.name = name;
this.info = info;
binder = new MethodBinder();
for (int i = 0; i < info.Length; i++)
{
MethodInfo item = (MethodInfo)info[i];
binder.AddMethod(item);
if (item.IsStatic)
{
this.is_static = true;
}
}
}
private void _MethodObject(Type type, string name, MethodInfo[] info)
{
this.type = type;
this.name = name;
this.info = info;
binder = new MethodBinder();
foreach (MethodInfo item in info)
{
binder.AddMethod(item);
if (item.IsStatic)
{
this.is_static = true;
}
}
}
int IComparer.Compare(Object m1, Object m2)
{
int p1 = MethodBinder.GetPrecedence((MethodBase)m1);
int p2 = MethodBinder.GetPrecedence((MethodBase)m2);
if (p1 < p2)
{
return(-1);
}
if (p1 > p2)
{
return(1);
}
return(0);
}
//====================================================================
// MethodBinding __call__ implementation.
//====================================================================
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw)
{
MethodBinding self = (MethodBinding)GetManagedObject(ob);
// This works around a situation where the wrong generic method is picked,
// for example this method in the tests: string Overloaded<T>(int arg1, int arg2, string arg3)
if (self.info != null)
{
if (self.info.IsGenericMethod)
{
int len = Runtime.PyTuple_Size(args);
Type[] sigTp = Runtime.PythonArgsToTypeArray(args, true);
if (sigTp != null)
{
Type[] genericTp = self.info.GetGenericArguments();
MethodInfo betterMatch = MethodBinder.MatchSignatureAndParameters(self.m.info, genericTp, sigTp);
if (betterMatch != null)
{
self.info = betterMatch;
}
}
}
}
// This supports calling a method 'unbound', passing the instance
// as the first argument. Note that this is not supported if any
// of the overloads are static since we can't know if the intent
// was to call the static method or the unbound instance method.
if ((self.target == IntPtr.Zero) && (!self.m.IsStatic()))
{
int len = Runtime.PyTuple_Size(args);
if (len < 1)
{
Exceptions.SetError(Exceptions.TypeError, "not enough arguments");
return(IntPtr.Zero);
}
IntPtr uargs = Runtime.PyTuple_GetSlice(args, 1, len);
IntPtr inst = Runtime.PyTuple_GetItem(args, 0);
Runtime.Incref(inst);
IntPtr r = self.m.Invoke(inst, uargs, kw, self.info);
Runtime.Decref(inst);
Runtime.Decref(uargs);
return(r);
}
return(self.m.Invoke(self.target, args, kw, self.info));
}
int IComparer <MaybeMethodBase> .Compare(MaybeMethodBase m1, MaybeMethodBase m2)
{
MethodBase me1 = m1.UnsafeValue;
MethodBase me2 = m2.UnsafeValue;
if (me1 == null && me2 == null)
{
return(0);
}
else if (me1 == null)
{
return(-1);
}
else if (me2 == null)
{
return(1);
}
if (me1.DeclaringType != me2.DeclaringType)
{
// m2's type derives from m1's type, favor m2
if (me1.DeclaringType.IsAssignableFrom(me2.DeclaringType))
{
return(1);
}
// m1's type derives from m2's type, favor m1
if (me2.DeclaringType.IsAssignableFrom(me1.DeclaringType))
{
return(-1);
}
}
int p1 = MethodBinder.GetPrecedence(me1);
int p2 = MethodBinder.GetPrecedence(me2);
if (p1 < p2)
{
return(-1);
}
if (p1 > p2)
{
return(1);
}
return(0);
}
public MethodObject(MaybeType type, string name, MethodBase[] info, bool allow_threads = MethodBinder.DefaultAllowThreads)
{
this.type = type;
this.name = name;
this.infoList = new List <MaybeMethodInfo>();
binder = new MethodBinder();
foreach (MethodBase item in info)
{
this.infoList.Add(item);
binder.AddMethod(item);
if (item.IsStatic)
{
this.is_static = true;
}
}
binder.allow_threads = allow_threads;
}
public static IntPtr mp_subscript(IntPtr tp, IntPtr idx)
{
MethodBinding self = (MethodBinding)GetManagedObject(tp);
MethodInfo sig = MethodBinder.MatchByTypeSig(self.m.info, idx);
if (sig == null)
{
return(Exceptions.RaiseTypeError(
"No match found for signature"
));
}
MethodBinding mb = new MethodBinding(self.m, self.target);
mb.info = sig;
Runtime.Incref(mb.pyHandle);
return(mb.pyHandle);
}
public Indexer() {
GetterBinder = new MethodBinder();
SetterBinder = new MethodBinder();
}
internal Binding Bind(IntPtr inst, IntPtr args, IntPtr kw,
MethodBase info, MethodInfo[] methodinfo)
{
// loop to find match, return invoker w/ or /wo error
MethodBase[] _methods = null;
int pynargs = Runtime.PyTuple_Size(args);
object arg;
bool isGeneric = false;
ArrayList defaultArgList = null;
if (info != null)
{
_methods = (MethodBase[])Array.CreateInstance(
typeof(MethodBase), 1
);
_methods.SetValue(info, 0);
}
else
{
_methods = GetMethods();
}
Type clrtype;
for (int i = 0; i < _methods.Length; i++)
{
MethodBase mi = _methods[i];
if (mi.IsGenericMethod)
{
isGeneric = true;
}
ParameterInfo[] pi = mi.GetParameters();
int clrnargs = pi.Length;
bool match = false;
int arrayStart = -1;
int outs = 0;
if (pynargs == clrnargs)
{
match = true;
}
else if (pynargs < clrnargs)
{
match = true;
defaultArgList = new ArrayList();
for (int v = pynargs; v < clrnargs; v++)
{
if (pi[v].DefaultValue == DBNull.Value)
{
match = false;
}
else
{
defaultArgList.Add((object)pi[v].DefaultValue);
}
}
}
else if ((pynargs > clrnargs) && (clrnargs > 0) &&
Attribute.IsDefined(pi[clrnargs - 1], typeof(ParamArrayAttribute)))
{
// This is a spam(params object[] egg) style method
match = true;
arrayStart = clrnargs - 1;
}
if (match)
{
Object[] margs = new Object[clrnargs];
for (int n = 0; n < clrnargs; n++)
{
IntPtr op;
if (n < pynargs)
{
if (arrayStart == n)
{
// map remaining Python arguments to a tuple since
// the managed function accepts it - hopefully :]
op = Runtime.PyTuple_GetSlice(args, arrayStart, pynargs);
}
else
{
op = Runtime.PyTuple_GetItem(args, n);
}
// this logic below handles cases when multiple overloading methods
// are ambiguous, hence comparison between Python and CLR types
// is necessary
clrtype = null;
IntPtr pyoptype;
if (_methods.Length > 1)
{
pyoptype = IntPtr.Zero;
pyoptype = Runtime.PyObject_Type(op);
Exceptions.Clear();
if (pyoptype != IntPtr.Zero)
{
clrtype = Converter.GetTypeByAlias(pyoptype);
}
Runtime.XDecref(pyoptype);
}
if (clrtype != null)
{
bool typematch = false;
if (pi[n].ParameterType != clrtype)
{
IntPtr pytype = Converter.GetPythonTypeByAlias(pi[n].ParameterType);
pyoptype = Runtime.PyObject_Type(op);
Exceptions.Clear();
if (pyoptype != IntPtr.Zero)
{
if (pytype != pyoptype)
{
typematch = false;
}
else
{
typematch = true;
clrtype = pi[n].ParameterType;
}
}
if (!typematch)
{
// this takes care of enum values
TypeCode argtypecode = Type.GetTypeCode(pi[n].ParameterType);
TypeCode paramtypecode = Type.GetTypeCode(clrtype);
if (argtypecode == paramtypecode)
{
typematch = true;
clrtype = pi[n].ParameterType;
}
}
Runtime.XDecref(pyoptype);
if (!typematch)
{
margs = null;
break;
}
}
else
{
typematch = true;
clrtype = pi[n].ParameterType;
}
}
else
{
clrtype = pi[n].ParameterType;
}
if (pi[n].IsOut || clrtype.IsByRef)
{
outs++;
}
if (!Converter.ToManaged(op, clrtype, out arg, false))
{
Exceptions.Clear();
margs = null;
break;
}
if (arrayStart == n)
{
// GetSlice() creates a new reference but GetItem()
// returns only a borrow reference.
Runtime.XDecref(op);
}
margs[n] = arg;
}
else
{
if (defaultArgList != null)
{
margs[n] = defaultArgList[n - pynargs];
}
}
}
if (margs == null)
{
continue;
}
Object target = null;
if ((!mi.IsStatic) && (inst != IntPtr.Zero))
{
//CLRObject co = (CLRObject)ManagedType.GetManagedObject(inst);
// InvalidCastException: Unable to cast object of type
// 'Python.Runtime.ClassObject' to type 'Python.Runtime.CLRObject'
CLRObject co = ManagedType.GetManagedObject(inst) as CLRObject;
// Sanity check: this ensures a graceful exit if someone does
// something intentionally wrong like call a non-static method
// on the class rather than on an instance of the class.
// XXX maybe better to do this before all the other rigmarole.
if (co == null)
{
return(null);
}
target = co.inst;
}
return(new Binding(mi, target, margs, outs));
}
}
// We weren't able to find a matching method but at least one
// is a generic method and info is null. That happens when a generic
// method was not called using the [] syntax. Let's introspect the
// type of the arguments and use it to construct the correct method.
if (isGeneric && (info == null) && (methodinfo != null))
{
Type[] types = Runtime.PythonArgsToTypeArray(args, true);
MethodInfo mi = MethodBinder.MatchParameters(methodinfo, types);
return(Bind(inst, args, kw, mi, null));
}
return(null);
}
internal DelegateObject(Type tp) : base(tp)
{
binder = new MethodBinder(tp.GetMethod("Invoke"));
}
internal Binding Bind(IntPtr inst, IntPtr args, IntPtr kw,
MethodBase info, MethodInfo[] methodinfo)
{
// loop to find match, return invoker w/ or /wo error
MethodBase[] _methods = null;
int pynargs = Runtime.PyTuple_Size(args);
object arg;
bool isGeneric = false;
if (info != null)
{
_methods = (MethodBase[])Array.CreateInstance(
typeof(MethodBase), 1
);
_methods.SetValue(info, 0);
}
else
{
_methods = GetMethods();
}
for (int i = 0; i < _methods.Length; i++)
{
MethodBase mi = _methods[i];
if (mi.IsGenericMethod)
{
isGeneric = true;
}
ParameterInfo[] pi = mi.GetParameters();
int clrnargs = pi.Length;
bool match = false;
int arrayStart = -1;
int outs = 0;
if (pynargs == clrnargs)
{
match = true;
}
else if ((pynargs > clrnargs) && (clrnargs > 0) &&
(pi[clrnargs - 1].ParameterType.IsArray))
{
// The last argument of the mananged functions seems to
// accept multiple arguments as a array. Hopefully it's a
// spam(params object[] egg) style method
match = true;
arrayStart = clrnargs - 1;
}
if (match)
{
Object[] margs = new Object[clrnargs];
for (int n = 0; n < clrnargs; n++)
{
IntPtr op;
if (arrayStart == n)
{
// map remaining Python arguments to a tuple since
// the managed function accepts it - hopefully :]
op = Runtime.PyTuple_GetSlice(args, arrayStart, pynargs);
}
else
{
op = Runtime.PyTuple_GetItem(args, n);
}
Type type = pi[n].ParameterType;
if (pi[n].IsOut || type.IsByRef)
{
outs++;
}
if (!Converter.ToManaged(op, type, out arg, false))
{
Exceptions.Clear();
margs = null;
break;
}
if (arrayStart == n)
{
// GetSlice() creates a new reference but GetItem()
// returns only a borrow reference.
Runtime.Decref(op);
}
margs[n] = arg;
}
if (margs == null)
{
continue;
}
Object target = null;
if ((!mi.IsStatic) && (inst != IntPtr.Zero))
{
//CLRObject co = (CLRObject)ManagedType.GetManagedObject(inst);
// InvalidCastException: Unable to cast object of type
// 'Python.Runtime.ClassObject' to type 'Python.Runtime.CLRObject'
CLRObject co = ManagedType.GetManagedObject(inst) as CLRObject;
// Sanity check: this ensures a graceful exit if someone does
// something intentionally wrong like call a non-static method
// on the class rather than on an instance of the class.
// XXX maybe better to do this before all the other rigmarole.
if (co == null)
{
return(null);
}
target = co.inst;
}
return(new Binding(mi, target, margs, outs));
}
}
// We weren't able to find a matching method but at least one
// is a generic method and info is null. That happens when a generic
// method was not called using the [] syntax. Let's introspect the
// type of the arguments and use it to construct the correct method.
if (isGeneric && (info == null) && (methodinfo != null))
{
Type[] types = Runtime.PythonArgsToTypeArray(args, true);
MethodInfo mi = MethodBinder.MatchParameters(methodinfo, types);
return(Bind(inst, args, kw, mi, null));
}
return(null);
}
//====================================================================
// This is a hack. Generally, no managed class is considered callable
// from Python - with the exception of System.Delegate. It is useful
// to be able to call a System.Delegate instance directly, especially
// when working with multicast delegates.
//====================================================================
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw) {
//ManagedType self = GetManagedObject(ob);
IntPtr tp = Runtime.PyObject_TYPE(ob);
ClassBase cb = (ClassBase)GetManagedObject(tp);
if (cb.type != typeof(System.Delegate)) {
Exceptions.SetError(Exceptions.TypeError,
"object is not callable");
return IntPtr.Zero;
}
CLRObject co = (CLRObject)ManagedType.GetManagedObject(ob);
Delegate d = co.inst as Delegate;
BindingFlags flags = BindingFlags.Public |
BindingFlags.NonPublic |
BindingFlags.Instance |
BindingFlags.Static;
MethodInfo method = d.GetType().GetMethod("Invoke", flags);
MethodBinder binder = new MethodBinder(method);
return binder.Invoke(ob, args, kw);
}
/// <summary>
/// MethodBinding __call__ implementation.
/// </summary>
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw)
{
var self = (MethodBinding)GetManagedObject(ob);
// This works around a situation where the wrong generic method is picked,
// for example this method in the tests: string Overloaded<T>(int arg1, int arg2, string arg3)
if (self.info != null)
{
if (self.info.IsGenericMethod)
{
var len = Runtime.PyTuple_Size(args); //FIXME: Never used
Type[] sigTp = Runtime.PythonArgsToTypeArray(args, true);
if (sigTp != null)
{
Type[] genericTp = self.info.GetGenericArguments();
MethodInfo betterMatch = MethodBinder.MatchSignatureAndParameters(self.m.info, genericTp, sigTp);
if (betterMatch != null)
{
self.info = betterMatch;
}
}
}
}
// This supports calling a method 'unbound', passing the instance
// as the first argument. Note that this is not supported if any
// of the overloads are static since we can't know if the intent
// was to call the static method or the unbound instance method.
var disposeList = new List <IntPtr>();
try
{
IntPtr target = self.target;
if (target == IntPtr.Zero && !self.m.IsStatic())
{
var len = Runtime.PyTuple_Size(args);
if (len < 1)
{
Exceptions.SetError(Exceptions.TypeError, "not enough arguments");
return(IntPtr.Zero);
}
target = Runtime.PyTuple_GetItem(args, 0);
Runtime.XIncref(target);
disposeList.Add(target);
args = Runtime.PyTuple_GetSlice(args, 1, len);
disposeList.Add(args);
}
// if the class is a IPythonDerivedClass and target is not the same as self.targetType
// (eg if calling the base class method) then call the original base class method instead
// of the target method.
IntPtr superType = IntPtr.Zero;
if (Runtime.PyObject_TYPE(target) != self.targetType)
{
var inst = GetManagedObject(target) as CLRObject;
if (inst?.inst is IPythonDerivedType)
{
var baseType = GetManagedObject(self.targetType) as ClassBase;
if (baseType != null)
{
string baseMethodName = "_" + baseType.type.Name + "__" + self.m.name;
IntPtr baseMethod = Runtime.PyObject_GetAttrString(target, baseMethodName);
if (baseMethod != IntPtr.Zero)
{
var baseSelf = GetManagedObject(baseMethod) as MethodBinding;
if (baseSelf != null)
{
self = baseSelf;
}
Runtime.XDecref(baseMethod);
}
else
{
Runtime.PyErr_Clear();
}
}
}
}
return(self.m.Invoke(target, args, kw, self.info));
}
finally
{
foreach (IntPtr ptr in disposeList)
{
Runtime.XDecref(ptr);
}
}
}
public Indexer()
{
GetterBinder = new MethodBinder();
SetterBinder = new MethodBinder();
}
internal DelegateObject(Type tp)
: base(tp)
{
binder = new MethodBinder(tp.GetMethod("Invoke"));
}