public static Expression /*!*/ Invoke(Expression codeContext, PythonContext /*!*/ binder, Type /*!*/ resultType, CallSignature signature, params Expression /*!*/[] /*!*/ args)
{
return(DynamicExpression.Dynamic(
binder.Invoke(
signature
),
resultType,
ArrayUtils.Insert(codeContext, args)
));
}
public static SlotOrFunction /*!*/ GetSlotOrFunction(PythonContext /*!*/ state, string op, params DynamicMetaObject[] types)
{
PythonTypeSlot slot;
SlotOrFunction res;
if (TryGetBinder(state, types, op, null, out res))
{
if (res != SlotOrFunction.Empty)
{
return(res);
}
}
else if (MetaUserObject.GetPythonType(types[0]).TryResolveSlot(state.SharedContext, op, out slot))
{
ParameterExpression tmp = Ast.Variable(typeof(object), "slotVal");
Expression[] args = new Expression[types.Length - 1];
for (int i = 1; i < types.Length; i++)
{
args[i - 1] = types[i].Expression;
}
return(new SlotOrFunction(
new DynamicMetaObject(
Ast.Block(
new ParameterExpression[] { tmp },
MetaPythonObject.MakeTryGetTypeMember(
state,
slot,
tmp,
types[0].Expression,
Ast.Call(
typeof(DynamicHelpers).GetMethod("GetPythonType"),
types[0].Expression
)
),
DynamicExpression.Dynamic(
state.Invoke(
new CallSignature(args.Length)
),
typeof(object),
ArrayUtils.Insert <Expression>(
AstUtils.Constant(state.SharedContext),
tmp,
args
)
)
),
BindingRestrictions.Combine(types).Merge(BindingRestrictionsHelpers.GetRuntimeTypeRestriction(types[0].Expression, types[0].GetLimitType()))
),
slot
));
}
return(SlotOrFunction.Empty);
}
protected DynamicMetaObject /*!*/ MakeDefaultNew(DefaultBinder /*!*/ binder, Expression /*!*/ function)
{
// calling theType.__new__(theType, args)
List <Expression> args = new List <Expression>();
args.Add(CodeContext);
args.Add(function);
AppendNewArgs(args);
return(new DynamicMetaObject(
Ast.Dynamic(
PythonContext.Invoke(
GetDynamicNewSignature()
),
typeof(object),
args.ToArray()
),
Arguments.Self.Restrictions
));
}
private static void MakeSlotCallWorker(PythonContext/*!*/ state, PythonTypeSlot/*!*/ slotTarget, Expression/*!*/ self, ConditionalBuilder/*!*/ bodyBuilder, params Expression/*!*/[]/*!*/ args) {
// Generate:
//
// SlotTryGetValue(context, slot, selfType, out callable) && (tmp=callable(args)) != NotImplemented) ?
// tmp :
// RestOfOperation
//
ParameterExpression callable = Ast.Variable(typeof(object), "slot");
ParameterExpression tmp = Ast.Variable(typeof(object), "slot");
bodyBuilder.AddCondition(
Ast.AndAlso(
Ast.Call(
typeof(PythonOps).GetMethod("SlotTryGetValue"),
AstUtils.Constant(state.SharedContext),
AstUtils.Convert(Utils.WeakConstant(slotTarget), typeof(PythonTypeSlot)),
AstUtils.Convert(self, typeof(object)),
Ast.Call(
typeof(DynamicHelpers).GetMethod("GetPythonType"),
AstUtils.Convert(self, typeof(object))
),
callable
),
Ast.NotEqual(
Ast.Assign(
tmp,
DynamicExpression.Dynamic(
state.Invoke(
new CallSignature(args.Length)
),
typeof(object),
ArrayUtils.Insert(AstUtils.Constant(state.SharedContext), (Expression)callable, args)
)
),
Ast.Property(null, typeof(PythonOps).GetProperty("NotImplemented"))
)
),
tmp
);
bodyBuilder.AddVariable(callable);
bodyBuilder.AddVariable(tmp);
}
/// <summary>
/// Creates a new InvokeBinder which will call with positional and keyword splatting.
///
/// The signature of the target site should be object(function), object[], dictionary, retType
/// </summary>
public static PythonInvokeBinder/*!*/ InvokeKeywords(PythonContext/*!*/ state) {
return state.Invoke(
new CallSignature(new Argument(ArgumentType.List), new Argument(ArgumentType.Dictionary))
);
}
/// <summary>
/// Creates a new InvokeBinder which will call with positional splatting.
///
/// The signature of the target site should be object(function), object[], retType
/// </summary>
/// <param name="state"></param>
/// <returns></returns>
public static PythonInvokeBinder/*!*/ InvokeSplat(PythonContext/*!*/ state) {
return state.Invoke(
new CallSignature(new Argument(ArgumentType.List))
);
}
private void MakeReverseDelegateWorker(CodeContext context)
{
Type[] sigTypes;
Type[] callSiteType;
Type retType;
GetSignatureInfo(out sigTypes, out callSiteType, out retType);
DynamicMethod dm = new DynamicMethod("ReverseInteropInvoker", retType, ArrayUtils.RemoveLast(sigTypes), DynamicModule);
ILGenerator ilGen = dm.GetILGenerator();
PythonContext pc = context.LanguageContext;
Type callDelegateSiteType = CompilerHelpers.MakeCallSiteDelegateType(callSiteType);
CallSite site = CallSite.Create(callDelegateSiteType, pc.Invoke(new CallSignature(_argtypes.Length)));
List <object> constantPool = new List <object>();
constantPool.Add(null); // 1st item is the target object, will be put in later.
constantPool.Add(site);
ilGen.BeginExceptionBlock();
//CallSite<Func<CallSite, object, object>> mySite;
//mySite.Target(mySite, target, ...);
LocalBuilder siteLocal = ilGen.DeclareLocal(site.GetType());
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldc_I4, constantPool.Count - 1);
ilGen.Emit(OpCodes.Ldelem_Ref);
ilGen.Emit(OpCodes.Castclass, site.GetType());
ilGen.Emit(OpCodes.Stloc, siteLocal);
ilGen.Emit(OpCodes.Ldloc, siteLocal);
ilGen.Emit(OpCodes.Ldfld, site.GetType().GetField("Target"));
ilGen.Emit(OpCodes.Ldloc, siteLocal);
// load code context
int contextIndex = constantPool.Count;
Debug.Assert(pc.SharedContext != null);
constantPool.Add(pc.SharedContext);
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldc_I4, contextIndex);
ilGen.Emit(OpCodes.Ldelem_Ref);
// load function target, in constant pool slot 0
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldc_I4_0);
ilGen.Emit(OpCodes.Ldelem_Ref);
// load arguments
for (int i = 0; i < _argtypes.Length; i++)
{
INativeType nativeType = _argtypes[i];
nativeType.EmitReverseMarshalling(ilGen, new Arg(i + 1, sigTypes[i + 1]), constantPool, 0);
}
ilGen.Emit(OpCodes.Call, callDelegateSiteType.GetMethod("Invoke"));
LocalBuilder finalRes = null;
// emit forward marshaling for return value
if (_restype != null)
{
LocalBuilder tmpRes = ilGen.DeclareLocal(typeof(object));
ilGen.Emit(OpCodes.Stloc, tmpRes);
finalRes = ilGen.DeclareLocal(retType);
((INativeType)_restype).EmitMarshalling(ilGen, new Local(tmpRes), constantPool, 0);
ilGen.Emit(OpCodes.Stloc, finalRes);
}
else
{
ilGen.Emit(OpCodes.Pop);
}
// } catch(Exception e) {
// emit the cleanup code
ilGen.BeginCatchBlock(typeof(Exception));
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldc_I4, contextIndex);
ilGen.Emit(OpCodes.Ldelem_Ref);
ilGen.Emit(OpCodes.Call, typeof(ModuleOps).GetMethod("CallbackException"));
ilGen.EndExceptionBlock();
if (_restype != null)
{
ilGen.Emit(OpCodes.Ldloc, finalRes);
}
ilGen.Emit(OpCodes.Ret);
_reverseDelegateConstants = constantPool;
_reverseDelegateType = GetReverseDelegateType(ArrayUtils.RemoveFirst(sigTypes), CallingConvention);
_reverseDelegate = dm;
}
/// <summary>
/// Creates a new InvokeBinder which will call with positional and keyword splatting.
///
/// The signature of the target site should be object(function), object[], dictionary, retType
/// </summary>
public static PythonInvokeBinder /*!*/ InvokeKeywords(PythonContext /*!*/ state)
{
return(state.Invoke(
new CallSignature(new Argument(ArgumentType.List), new Argument(ArgumentType.Dictionary))
));
}
/// <summary>
/// Creates a new InvokeBinder which will call with positional splatting.
///
/// The signature of the target site should be object(function), object[], retType
/// </summary>
/// <param name="state"></param>
/// <returns></returns>
public static PythonInvokeBinder /*!*/ InvokeSplat(PythonContext /*!*/ state)
{
return(state.Invoke(
new CallSignature(new Argument(ArgumentType.List))
));
}
public static SlotOrFunction/*!*/ GetSlotOrFunction(PythonContext/*!*/ state, string op, params DynamicMetaObject[] types) {
PythonTypeSlot slot;
SlotOrFunction res;
if (TryGetBinder(state, types, op, null, out res)) {
if (res != SlotOrFunction.Empty) {
return res;
}
} else if (MetaUserObject.GetPythonType(types[0]).TryResolveSlot(state.SharedContext, op, out slot)) {
ParameterExpression tmp = Ast.Variable(typeof(object), "slotVal");
Expression[] args = new Expression[types.Length - 1];
for (int i = 1; i < types.Length; i++) {
args[i - 1] = types[i].Expression;
}
return new SlotOrFunction(
new DynamicMetaObject(
Ast.Block(
new ParameterExpression[] { tmp },
MetaPythonObject.MakeTryGetTypeMember(
state,
slot,
tmp,
types[0].Expression,
Ast.Call(
typeof(DynamicHelpers).GetMethod("GetPythonType"),
types[0].Expression
)
),
Ast.Dynamic(
state.Invoke(
new CallSignature(args.Length)
),
typeof(object),
ArrayUtils.Insert<Expression>(
AstUtils.Constant(state.SharedContext),
tmp,
args
)
)
),
BindingRestrictions.Combine(types).Merge(BindingRestrictionsHelpers.GetRuntimeTypeRestriction(types[0].Expression, types[0].GetLimitType()))
),
slot
);
}
return SlotOrFunction.Empty;
}
private DynamicMetaObject /*!*/ MakeSetMember(SetMemberBinder /*!*/ member, DynamicMetaObject /*!*/ value)
{
PythonContext state = PythonContext.GetPythonContext(member);
DynamicMetaObject self = Restrict(Value.GetType());
if (Value.GetType() != typeof(PythonType) && DynamicHelpers.GetPythonType(Value).IsSystemType)
{
// built-in subclass of .NET type. Usually __setattr__ is handled by MetaUserObject
// but we can have a built-in subtype that's not a user type.
PythonTypeSlot pts;
if (Value.TryGetCustomSetAttr(state.SharedContext, out pts))
{
Debug.Assert(pts.GetAlwaysSucceeds);
ParameterExpression tmp = Ast.Variable(typeof(object), "boundVal");
return(BindingHelpers.AddDynamicTestAndDefer(
member,
new DynamicMetaObject(
Ast.Block(
new[] { tmp },
DynamicExpression.Dynamic(
state.Invoke(new CallSignature(2)),
typeof(object),
AstUtils.Constant(state.SharedContext),
Ast.Block(
Ast.Call(
typeof(PythonOps).GetMethod(nameof(PythonOps.SlotTryGetValue)),
AstUtils.Constant(state.SharedContext),
AstUtils.Convert(AstUtils.WeakConstant(pts), typeof(PythonTypeSlot)),
AstUtils.Convert(Expression, typeof(object)),
AstUtils.Convert(AstUtils.WeakConstant(DynamicHelpers.GetPythonType(Value)), typeof(PythonType)),
tmp
),
tmp
),
Ast.Constant(member.Name),
value.Expression
)
),
self.Restrictions
),
new DynamicMetaObject[] { this, value },
TestUserType()
));
}
}
return(BindingHelpers.AddDynamicTestAndDefer(
member,
new DynamicMetaObject(
Ast.Call(
typeof(PythonOps).GetMethod(nameof(PythonOps.PythonTypeSetCustomMember)),
AstUtils.Constant(PythonContext.GetPythonContext(member).SharedContext),
self.Expression,
AstUtils.Constant(member.Name),
AstUtils.Convert(
value.Expression,
typeof(object)
)
),
self.Restrictions.Merge(value.Restrictions)
),
new DynamicMetaObject[] { this, value },
TestUserType()
));
}
public static Expression/*!*/ Invoke(Expression codeContext, PythonContext/*!*/ binder, Type/*!*/ resultType, CallSignature signature, params Expression/*!*/[]/*!*/ args) {
return Ast.Dynamic(
binder.Invoke(
signature
),
resultType,
ArrayUtils.Insert(codeContext, args)
);
}