/// <summary>
/// Get the expression operand string.
/// </summary>
/// <param name="exp">The expression to return.</param>
/// <returns>The string expression.</returns>
public static string GetExpression(Nequeo.Linq.ExpressionOperandBaseType exp)
{
switch (exp)
{
case Nequeo.Linq.ExpressionOperandBaseType.Add:
return("+");
case Nequeo.Linq.ExpressionOperandBaseType.Divide:
return("/");
case Nequeo.Linq.ExpressionOperandBaseType.Equal:
return("==");
case Nequeo.Linq.ExpressionOperandBaseType.GreaterThan:
return(">");
case Nequeo.Linq.ExpressionOperandBaseType.GreaterThanOrEqual:
return(">=");
case Nequeo.Linq.ExpressionOperandBaseType.IsFalse:
return("false");
case Nequeo.Linq.ExpressionOperandBaseType.IsTrue:
return("true");
case Nequeo.Linq.ExpressionOperandBaseType.LessThan:
return("<");
case Nequeo.Linq.ExpressionOperandBaseType.LessThanOrEqual:
return("<=");
case Nequeo.Linq.ExpressionOperandBaseType.Multiply:
return("*");
case Nequeo.Linq.ExpressionOperandBaseType.NotEqual:
return("!=");
case Nequeo.Linq.ExpressionOperandBaseType.Subtract:
return("-");
case Nequeo.Linq.ExpressionOperandBaseType.And:
return("&");
case Nequeo.Linq.ExpressionOperandBaseType.Or:
return("|");
case Nequeo.Linq.ExpressionOperandBaseType.AndAlso:
return("&&");
case Nequeo.Linq.ExpressionOperandBaseType.OrElse:
return("||");
default:
return("");
}
}
/// <summary>
/// Get the expression type.
/// </summary>
/// <param name="exp">The expression to return.</param>
/// <returns>The expression type.</returns>
public static ExpressionType GetExpressionType(Nequeo.Linq.ExpressionOperandBaseType exp)
{
switch (exp)
{
case Nequeo.Linq.ExpressionOperandBaseType.Add:
return(ExpressionType.Add);
case Nequeo.Linq.ExpressionOperandBaseType.Divide:
return(ExpressionType.Divide);
case Nequeo.Linq.ExpressionOperandBaseType.Equal:
return(ExpressionType.Equal);
case Nequeo.Linq.ExpressionOperandBaseType.GreaterThan:
return(ExpressionType.GreaterThan);
case Nequeo.Linq.ExpressionOperandBaseType.GreaterThanOrEqual:
return(ExpressionType.GreaterThanOrEqual);
case Nequeo.Linq.ExpressionOperandBaseType.IsFalse:
return(ExpressionType.IsFalse);
case Nequeo.Linq.ExpressionOperandBaseType.IsTrue:
return(ExpressionType.IsTrue);
case Nequeo.Linq.ExpressionOperandBaseType.LessThan:
return(ExpressionType.LessThan);
case Nequeo.Linq.ExpressionOperandBaseType.LessThanOrEqual:
return(ExpressionType.LessThanOrEqual);
case Nequeo.Linq.ExpressionOperandBaseType.Multiply:
return(ExpressionType.Multiply);
case Nequeo.Linq.ExpressionOperandBaseType.NotEqual:
return(ExpressionType.NotEqual);
case Nequeo.Linq.ExpressionOperandBaseType.Subtract:
return(ExpressionType.Subtract);
case Nequeo.Linq.ExpressionOperandBaseType.And:
return(ExpressionType.And);
case Nequeo.Linq.ExpressionOperandBaseType.Or:
return(ExpressionType.Or);
case Nequeo.Linq.ExpressionOperandBaseType.AndAlso:
return(ExpressionType.AndAlso);
case Nequeo.Linq.ExpressionOperandBaseType.OrElse:
return(ExpressionType.OrElse);
default:
throw new Exception(string.Format("Unhandled expression type: '{0}'", exp.ToString()));
}
}
/// <summary>
/// Create the combined expression.
/// </summary>
/// <param name="left">The left expression.</param>
/// <param name="right">The right expression.</param>
/// <param name="operand">The joining operand.</param>
/// <returns>The combined expression.</returns>
private Expression CreateCombinedExpression(Expression left, Expression right, Nequeo.Linq.ExpressionOperandBaseType operand)
{
switch (operand)
{
case ExpressionOperandBaseType.Add:
return(Expression.Add(left, right));
case ExpressionOperandBaseType.And:
return(Expression.And(left, right));
case ExpressionOperandBaseType.AndAlso:
return(Expression.AndAlso(left, right));
case ExpressionOperandBaseType.Divide:
return(Expression.Divide(left, right));
case ExpressionOperandBaseType.Equal:
return(Expression.Equal(left, right));
case ExpressionOperandBaseType.GreaterThan:
return(Expression.GreaterThan(left, right));
case ExpressionOperandBaseType.GreaterThanOrEqual:
return(Expression.GreaterThanOrEqual(left, right));
case ExpressionOperandBaseType.IsFalse:
return(Expression.IsFalse(left));
case ExpressionOperandBaseType.IsTrue:
return(Expression.IsTrue(left));
case ExpressionOperandBaseType.LessThan:
return(Expression.LessThan(left, right));
case ExpressionOperandBaseType.LessThanOrEqual:
return(Expression.LessThanOrEqual(left, right));
case ExpressionOperandBaseType.Multiply:
return(Expression.Multiply(left, right));
case ExpressionOperandBaseType.NotEqual:
return(Expression.NotEqual(left, right));
case ExpressionOperandBaseType.Or:
return(Expression.Or(left, right));
case ExpressionOperandBaseType.OrElse:
return(Expression.OrElse(left, right));
case ExpressionOperandBaseType.Subtract:
return(Expression.Subtract(left, right));
default:
return(null);
}
}
