#region Copyright(c) Alexey Sadomov, Vladimir Timashkov. All Rights Reserved.
// -----------------------------------------------------------------------------
// Copyright(c) 2010 Alexey Sadomov, Vladimir Timashkov. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. No Trademark License - Microsoft Public License (Ms-PL) does not grant you rights to use
// authors names, logos, or trademarks.
// 2. If you distribute any portion of the software, you must retain all copyright,
// patent, trademark, and attribution notices that are present in the software.
// 3. If you distribute any portion of the software in source code form, you may do
// so only under this license by including a complete copy of Microsoft Public License (Ms-PL)
// with your distribution. If you distribute any portion of the software in compiled
// or object code form, you may only do so under a license that complies with
// Microsoft Public License (Ms-PL).
// 4. The names of the authors may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// The software is licensed "as-is." You bear the risk of using it. The authors
// give no express warranties, guarantees or conditions. You may have additional consumer
// rights under your local laws which this license cannot change. To the extent permitted
// under your local laws, the authors exclude the implied warranties of merchantability,
// fitness for a particular purpose and non-infringement.
// -----------------------------------------------------------------------------
#endregion
using System;
using System.Linq.Expressions;
using System.Xml.Linq;
using CamlexNET.Interfaces;
namespace CamlexNET.Impl.Operands
{
internal class BooleanValueOperand : ValueOperand<bool>
{
public BooleanValueOperand(bool value) :
base(typeof(DataTypes.Boolean), value)
{
}
public BooleanValueOperand(string value) :
base(typeof(DataTypes.Boolean), false)
{
if (!bool.TryParse(value, out this.value))
{
// boolean operand can have 1 and 0 as parameter
if (!this.tryConvertViaInteger(value, out this.value))
{
throw new InvalidValueForOperandTypeException(value, this.Type);
}
}
}
private bool tryConvertViaInteger(string value, out bool result)
{
result = false;
try
{
int val = Convert.ToInt32(value);
if (val != 0 && val != 1)
{
return false;
}
result = Convert.ToBoolean(val);
}
catch
{
return false;
}
return true;
}
public override XElement ToCaml()
{
// 0 and 1 should be used instead True and False
return
new XElement(Tags.Value, new XAttribute(Attributes.Type, this.TypeName),
new XText((Convert.ToInt32(this.Value)).ToString()));
}
public override Expression ToExpression()
{
return Expression.Constant(this.Value);
}
}
}