public override System.Linq.Expressions.Expression TransformRead()
{
if (ExpressionType == UnaryOperator.New)
{
var ie = Operand as InvokeExpression;
if (ie != null)
{
return(System.Linq.Expressions.Expression.Dynamic(
LanguageContext.CreateCreateBinder(new System.Dynamic.CallInfo(ie.Arguments.Count)),
typeof(object),
ie.TransformTargetAndArguments().Item1
));
}
else
{
throw new InvalidOperationException("new 演算子を適用できるのは関数呼び出しのみです。");
}
}
if (ExpressionType == UnaryOperator.Delete)
{
return(Operand.TransformDelete());
}
if (ExpressionType == UnaryOperator.AccessPropertyObject)
{
return(Operand.TransformGetProperty());
}
var target = Operand.TransformRead();
if (ExpressionType == UnaryOperator.PostDecrementAssign || ExpressionType == UnaryOperator.PostIncrementAssign)
{
var v = System.Linq.Expressions.Expression.Variable(typeof(object));
return(System.Linq.Expressions.Expression.Block(new[] { v },
System.Linq.Expressions.Expression.Assign(v, target),
Operand.TransformWrite(DoUnaryOperation(LanguageContext, ExpressionType, v)),
v
));
}
else
{
var exp = DoUnaryOperation(LanguageContext, ExpressionType, target);
if (ExpressionType == UnaryOperator.PreIncrementAssign || ExpressionType == UnaryOperator.PreDecrementAssign)
{
return(Operand.TransformWrite(exp));
}
return(exp);
}
}