public override Expression DoResolve (EmitContext ec)
{
// Don't resolve already resolved expression
if (eclass != ExprClass.Invalid)
return this;
Expression expr_resolved = expr.Resolve (ec, ResolveFlags.VariableOrValue | ResolveFlags.MethodGroup);
if (expr_resolved == null)
return null;
mg = expr_resolved as MethodGroupExpr;
if (mg == null) {
Type expr_type = expr_resolved.Type;
if (expr_type != null && TypeManager.IsDelegateType (expr_type)){
return (new DelegateInvocation (
expr_resolved, Arguments, loc)).Resolve (ec);
}
MemberExpr me = expr_resolved as MemberExpr;
if (me == null) {
expr_resolved.Error_UnexpectedKind (ResolveFlags.MethodGroup, loc);
return null;
}
mg = ec.TypeContainer.LookupExtensionMethod (me.Type, me.Name, loc);
if (mg == null) {
Report.Error (1955, loc, "The member `{0}' cannot be used as method or delegate",
expr_resolved.GetSignatureForError ());
return null;
}
((ExtensionMethodGroupExpr)mg).ExtensionExpression = me.InstanceExpression;
}
//
// Next, evaluate all the expressions in the argument list
//
if (Arguments != null && !arguments_resolved) {
for (int i = 0; i < Arguments.Count; ++i)
{
if (!((Argument)Arguments[i]).Resolve(ec, loc))
return null;
}
}
mg = DoResolveOverload (ec);
if (mg == null)
return null;
MethodInfo method = (MethodInfo)mg;
if (method != null) {
type = TypeManager.TypeToCoreType (method.ReturnType);
// TODO: this is a copy of mg.ResolveMemberAccess method
Expression iexpr = mg.InstanceExpression;
if (method.IsStatic) {
if (iexpr == null ||
iexpr is This || iexpr is EmptyExpression ||
mg.IdenticalTypeName) {
mg.InstanceExpression = null;
} else {
MemberExpr.error176 (loc, mg.GetSignatureForError ());
return null;
}
} else {
if (iexpr == null) {
SimpleName.Error_ObjectRefRequired (ec, loc, mg.GetSignatureForError ());
}
}
}
if (type.IsPointer){
if (!ec.InUnsafe){
UnsafeError (loc);
return null;
}
}
//
// Only base will allow this invocation to happen.
//
if (mg.IsBase && method.IsAbstract){
Error_CannotCallAbstractBase (TypeManager.CSharpSignature (method));
return null;
}
if (Arguments == null && method.DeclaringType == TypeManager.object_type && method.Name == Destructor.MetadataName) {
if (mg.IsBase)
Report.Error (250, loc, "Do not directly call your base class Finalize method. It is called automatically from your destructor");
else
Report.Error (245, loc, "Destructors and object.Finalize cannot be called directly. Consider calling IDisposable.Dispose if available");
return null;
}
IsSpecialMethodInvocation (method, loc);
if (mg.InstanceExpression != null)
mg.InstanceExpression.CheckMarshalByRefAccess (ec);
eclass = ExprClass.Value;
return this;
}
public override Expression DoResolve (ResolveContext ec)
{
// Don't resolve already resolved expression
if (eclass != ExprClass.Invalid)
return this;
Expression expr_resolved = expr.Resolve (ec, ResolveFlags.VariableOrValue | ResolveFlags.MethodGroup);
if (expr_resolved == null)
return null;
//
// Next, evaluate all the expressions in the argument list
//
bool dynamic_arg = false;
if (arguments != null && !arguments_resolved)
arguments.Resolve (ec, out dynamic_arg);
Type expr_type = expr_resolved.Type;
mg = expr_resolved as MethodGroupExpr;
if (dynamic_arg || TypeManager.IsDynamicType (expr_type)) {
Arguments args;
DynamicMemberBinder dmb = expr_resolved as DynamicMemberBinder;
if (dmb != null) {
args = dmb.Arguments;
if (arguments != null)
args.AddRange (arguments);
} else if (mg == null) {
if (arguments == null)
args = new Arguments (1);
else
args = arguments;
args.Insert (0, new Argument (expr_resolved));
expr = null;
} else {
if (mg.IsBase) {
ec.Report.Error (1971, loc,
"The base call to method `{0}' cannot be dynamically dispatched. Consider casting the dynamic arguments or eliminating the base access",
mg.Name);
return null;
}
args = arguments;
if (mg.IsStatic != mg.IsInstance) {
if (args == null)
args = new Arguments (1);
if (mg.IsStatic) {
args.Insert (0, new Argument (new TypeOf (new TypeExpression (mg.DeclaringType, loc), loc).Resolve (ec), Argument.AType.DynamicStatic));
} else {
MemberAccess ma = expr as MemberAccess;
if (ma != null)
args.Insert (0, new Argument (ma.Left.Resolve (ec)));
else
args.Insert (0, new Argument (new This (loc).Resolve (ec)));
}
}
}
return new DynamicInvocation (expr as ATypeNameExpression, args, loc).Resolve (ec);
}
if (mg == null) {
if (expr_type != null && TypeManager.IsDelegateType (expr_type)){
return (new DelegateInvocation (
expr_resolved, arguments, loc)).Resolve (ec);
}
MemberExpr me = expr_resolved as MemberExpr;
if (me == null) {
expr_resolved.Error_UnexpectedKind (ec, ResolveFlags.MethodGroup, loc);
return null;
}
mg = ec.LookupExtensionMethod (me.Type, me.Name, loc);
if (mg == null) {
ec.Report.Error (1955, loc, "The member `{0}' cannot be used as method or delegate",
expr_resolved.GetSignatureForError ());
return null;
}
((ExtensionMethodGroupExpr)mg).ExtensionExpression = me.InstanceExpression;
}
mg = DoResolveOverload (ec);
if (mg == null)
return null;
MethodInfo method = (MethodInfo)mg;
if (method != null) {
type = TypeManager.TypeToCoreType (method.ReturnType);
// TODO: this is a copy of mg.ResolveMemberAccess method
Expression iexpr = mg.InstanceExpression;
if (method.IsStatic) {
if (iexpr == null ||
iexpr is This || iexpr is EmptyExpression ||
mg.IdenticalTypeName) {
mg.InstanceExpression = null;
} else {
MemberExpr.error176 (ec, loc, mg.GetSignatureForError ());
return null;
}
} else {
if (iexpr == null || iexpr == EmptyExpression.Null) {
SimpleName.Error_ObjectRefRequired (ec, loc, mg.GetSignatureForError ());
}
}
}
if (type.IsPointer){
if (!ec.IsUnsafe){
UnsafeError (ec, loc);
return null;
}
}
//
// Only base will allow this invocation to happen.
//
if (mg.IsBase && method.IsAbstract){
Error_CannotCallAbstractBase (ec, TypeManager.CSharpSignature (method));
return null;
}
if (arguments == null && method.DeclaringType == TypeManager.object_type && method.Name == Destructor.MetadataName) {
if (mg.IsBase)
ec.Report.Error (250, loc, "Do not directly call your base class Finalize method. It is called automatically from your destructor");
else
ec.Report.Error (245, loc, "Destructors and object.Finalize cannot be called directly. Consider calling IDisposable.Dispose if available");
return null;
}
IsSpecialMethodInvocation (ec, method, loc);
if (mg.InstanceExpression != null)
mg.InstanceExpression.CheckMarshalByRefAccess (ec);
eclass = ExprClass.Value;
return this;
}
public override string GetSignatureForError()
{
return(mg.GetSignatureForError());
}