protected override object InternalVisit(BooleanNotExpression node)
{
return(new Func <Environment, object>(env =>
{
return !EvaluateExpression <bool>(node.Expression, env);
}));
}
public QsiUnaryExpressionNode VisitBooleanNotExpression(BooleanNotExpression booleanNotExpression)
{
return(TreeHelper.Create <QsiUnaryExpressionNode>(n =>
{
n.Operator = SqlServerKnownOperator.Not;
n.Expression.SetValue(VisitBooleanExpression(booleanNotExpression.Expression));
}));
}
public override void ExplicitVisit(BooleanNotExpression node)
{
var binaryOp = new cs.CodeBinaryOperatorExpression()
{
Operator = cs.CodeBinaryOperatorType.IdentityInequality,
Left = TryBuildFromNode(node.Expression, ref lastHasError, ref lastError),
Right = new cs.CodePrimitiveExpression(true)
};
if (!lastHasError)
{
lastExpression = binaryOp;
}
}
public override void Visit(BooleanNotExpression node) { this.action(node); }
public override void ExplicitVisit(BooleanNotExpression node)
{
base.ExplicitVisit(node);
ReplaceExpression(node, n => n.Expression);
}
public override void ExplicitVisit(BooleanNotExpression node)
{
Rewrite(node, n => n.Expression);
base.ExplicitVisit(node);
}
public override void ExplicitVisit(BooleanNotExpression fragment)
{
_fragments.Add(fragment);
}
protected override object InternalVisit(BooleanNotExpression node)
{
//TODO: node.Cursor
return(new SQLExpressionInterpreter(Database).Visit <object>(node));
}
public override void ExplicitVisit(BooleanNotExpression node)
{
_buffer.Append("not ");
node.Expression.Accept(this);
}