/// <summary>
/// Resolves types for the specified expression.
/// </summary>
/// <param name="expression">The expression to resolve types for.</param>
/// <returns>Expression with resolved types.</returns>
public QueryExpression Visit(QueryNotExpression expression)
{
var argument = this.ResolveTypes(expression.Argument);
var boolType = this.EvaluationStrategy.BooleanType;
return(argument.Not(boolType));
}
/// <summary>
/// Replaces the given expression.
/// </summary>
/// <param name="expression">Expression to replace.</param>
/// <returns>Replaced expression.</returns>
public virtual QueryExpression Visit(QueryNotExpression expression)
{
QueryExpression argument = this.ReplaceExpression(expression.Argument);
if (this.HasChanged(expression.Argument, argument))
{
return(new QueryNotExpression(argument, expression.ExpressionType));
}
return(expression);
}
/// <summary>
/// Evaluates the specified expression.
/// </summary>
/// <param name="expression">The expression to evaluate.</param>
/// <returns>Value of the expression.</returns>
public QueryValue Visit(QueryNotExpression expression)
{
var argumentValue = this.Evaluate(expression.Argument) as QueryScalarValue;
if (argumentValue == null)
{
throw new TaupoInvalidOperationException("Argument must be a " + typeof(QueryScalarValue).Name + ".");
}
return(argumentValue.LogicalNegate());
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the QueryNotExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public override string Visit(QueryNotExpression expression)
{
return string.Format(CultureInfo.InvariantCulture, "not ({0})", this.Convert(expression.Argument));
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the QueryNotExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public virtual string Visit(QueryNotExpression expression)
{
throw new TaupoNotSupportedException("Not supported");
}
/// <summary>
/// Generates System.CodeDom.CodeExpression from the given expression.
/// </summary>
/// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param>
/// <returns>Generated System.CodeDom.CodeExpression.</returns>
public virtual CodeExpression Visit(QueryNotExpression expression)
{
return(this.GenerateCode(expression.Argument).ValueEquals(Code.Primitive(false)));
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the QueryNotExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public override string Visit(QueryNotExpression expression)
{
return(string.Format(CultureInfo.InvariantCulture, "not ({0})", this.Convert(expression.Argument)));
}
