public override DynamicMetaObject FallbackCreateInstance(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
Type typeToUse = target.Value is Type ? (Type)target.Value : target.LimitType;
IList <DynamicMetaObject> argsPlus = new List <DynamicMetaObject>(args.Length);
foreach (DynamicMetaObject arg in args)
{
argsPlus.Add(arg);
}
OverloadResolverFactory factory = _context.SharedOverloadResolverFactory;
DefaultOverloadResolver res = factory.CreateOverloadResolver(argsPlus, new CallSignature(args.Length), CallTypes.None);
BindingFlags flags = BindingFlags.Public | BindingFlags.Instance;
IList <MethodBase> methods = new List <MethodBase>(typeToUse.GetConstructors(flags).Where <MethodBase>(x => x.GetParameters().Length == args.Length));
if (methods.Count > 0)
{
BindingTarget bt;
DynamicMetaObject dmo = _context.Binder.CallMethod(res, methods, BindingRestrictions.Empty, "_ctor", NarrowingLevel.None, NarrowingLevel.All, out bt);
dmo = DynUtils.MaybeBoxReturnValue(dmo);
return(dmo);
}
return(errorSuggestion ??
new DynamicMetaObject(
Expression.Throw(
Expression.New(typeof(MissingMethodException).GetConstructor(new Type[] { typeof(string) }),
Expression.Constant("Cannot find constructor matching args")),
typeof(object)),
target.Restrictions.Merge(BindingRestrictions.Combine(args))));
}
public override DynamicMetaObject FallbackInvokeMember(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
if (target.HasValue && target.Value == null)
{
return(errorSuggestion ??
new DynamicMetaObject(
Expression.Throw(
Expression.New(typeof(MissingMethodException).GetConstructor(new Type[] { typeof(string) }),
Expression.Constant(String.Format("Cannot call {0} method named {1} on nil", _isStatic ? "static" : "instance", this.Name))),
typeof(object)),
BindingRestrictions.GetInstanceRestriction(target.Expression, null)));
}
Type typeToUse = _isStatic && target.Value is Type ? (Type)target.Value : target.LimitType;
IList <DynamicMetaObject> argsPlus = new List <DynamicMetaObject>(args.Length + (_isStatic ? 0 : 1));
if (!_isStatic)
{
argsPlus.Add(target);
}
foreach (DynamicMetaObject arg in args)
{
argsPlus.Add(arg);
}
OverloadResolverFactory factory = _context.SharedOverloadResolverFactory;
DefaultOverloadResolver res = factory.CreateOverloadResolver(argsPlus, new CallSignature(args.Length), _isStatic ? CallTypes.None : CallTypes.ImplicitInstance);
BindingFlags flags = BindingFlags.InvokeMethod | BindingFlags.Public | (_isStatic ? BindingFlags.Static : BindingFlags.Instance);
IList <MethodBase> methods = new List <MethodBase>(typeToUse.GetMethods(flags).Where <MethodBase>(x => x.Name == Name && x.GetParameters().Length == args.Length));
if (methods.Count > 0)
{
BindingTarget bt;
DynamicMetaObject dmo = _context.Binder.CallMethod(
res,
methods,
target.Restrictions.Merge(BindingRestrictionsHelpers.GetRuntimeTypeRestriction(target).Merge(BindingRestrictions.Combine(args))),
Name,
NarrowingLevel.None,
NarrowingLevel.All,
out bt);
dmo = DynUtils.MaybeBoxReturnValue(dmo);
//; Console.WriteLine(dmo.Expression.DebugView);
return(dmo);
}
return(errorSuggestion ??
new DynamicMetaObject(
Expression.Throw(
Expression.New(typeof(MissingMethodException).GetConstructor(new Type[] { typeof(string) }),
Expression.Constant(String.Format("No matching member {0} taking {1} args for {2}", this.Name, args.Length, typeToUse.Name))),
typeof(object)),
target.Restrictions.Merge(BindingRestrictionsHelpers.GetRuntimeTypeRestriction(target).Merge(BindingRestrictions.Combine(args)))));
}
public override DynamicMetaObject FallbackGetMember(DynamicMetaObject target, DynamicMetaObject errorSuggestion)
{
if (target.HasValue && target.Value == null)
{
return(errorSuggestion ??
new DynamicMetaObject(
Expression.Throw(
Expression.New(typeof(MissingMethodException).GetConstructor(new Type[] { typeof(string) }),
Expression.Constant(String.Format("Cannot call {0} field/property/member name {1} on nil", _isStatic ? "static" : "instance", this.Name))),
typeof(object)),
BindingRestrictions.GetInstanceRestriction(target.Expression, null)));
}
Expression instanceExpr = _isStatic ? null : Expression.Convert(target.Expression, target.LimitType);
Type typeToUse = _isStatic && target.Value is Type ? (Type)target.Value : target.LimitType;
BindingRestrictions restrictions = target.Restrictions.Merge(BindingRestrictions.GetTypeRestriction(target.Expression, target.LimitType));
BindingFlags flags = BindingFlags.Public;
if (_isStatic)
{
flags |= BindingFlags.Static;
}
else
{
flags |= BindingFlags.Instance;
}
FieldInfo finfo = typeToUse.GetField(Name, flags);
if (finfo != null)
{
return(DynUtils.MaybeBoxReturnValue(new DynamicMetaObject(Expression.Field(instanceExpr, finfo), restrictions)));
}
PropertyInfo pinfo = typeToUse.GetProperty(Name, flags);
if (pinfo != null)
{
return(DynUtils.MaybeBoxReturnValue(new DynamicMetaObject(Expression.Property(instanceExpr, pinfo), restrictions)));
}
MethodInfo minfo = typeToUse.GetMethod(Name, flags, Type.DefaultBinder, Type.EmptyTypes, new ParameterModifier[0]);
if (minfo != null)
{
return(DynUtils.MaybeBoxReturnValue(new DynamicMetaObject(Expression.Call(instanceExpr, minfo), restrictions)));
}
return(errorSuggestion ??
new DynamicMetaObject(
Expression.Throw(
Expression.New(typeof(MissingMethodException).GetConstructor(new Type[] { typeof(string) }),
Expression.Constant(String.Format("Cannot find {0} field/property/member name {1}", _isStatic ? "static" : "instance", this.Name))),
typeof(object)),
target.Restrictions.Merge(BindingRestrictionsHelpers.GetRuntimeTypeRestriction(target))));
}