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//
// ConditionFactorExpression.cs
//
// Author:
// Marek Sieradzki (marek.sieradzki@gmail.com)
//
// (C) 2006 Marek Sieradzki
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#if NET_2_0
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Globalization;
using System.Xml;
namespace Microsoft.Build.BuildEngine {
internal class ConditionFactorExpression : ConditionExpression {
readonly Token token;
static Hashtable allValues;
static Hashtable trueValues;
static Hashtable falseValues;
static ConditionFactorExpression ()
{
string[] trueValuesArray = new string[] {"true", "on", "yes"};
string[] falseValuesArray = new string[] {"false", "off", "no"};
allValues = CollectionsUtil.CreateCaseInsensitiveHashtable ();
trueValues = CollectionsUtil.CreateCaseInsensitiveHashtable ();
falseValues = CollectionsUtil.CreateCaseInsensitiveHashtable ();
foreach (string s in trueValuesArray) {
trueValues.Add (s, s);
allValues.Add (s, s);
}
foreach (string s in falseValuesArray) {
falseValues.Add (s, s);
allValues.Add (s, s);
}
}
public ConditionFactorExpression (Token token)
{
this.token = token;
}
public override bool BoolEvaluate (Project context)
{
Token evaluatedToken = EvaluateToken (token, context);
if (trueValues [evaluatedToken.Value] != null)
return true;
else if (falseValues [evaluatedToken.Value] != null)
return false;
else
throw new InvalidOperationException ();
}
public override float NumberEvaluate (Project context)
{
Token evaluatedToken = EvaluateToken (token, context);
return Single.Parse (evaluatedToken.Value, CultureInfo.InvariantCulture);
}
public override string StringEvaluate (Project context)
{
Token evaluatedToken = EvaluateToken (token, context);
return evaluatedToken.Value;
}
// FIXME: check if we really can do it
public override bool CanEvaluateToBool (Project context)
{
Token evaluatedToken = EvaluateToken (token, context);
if (token.Type == TokenType.String && allValues [evaluatedToken.Value] != null)
return true;
else
return false;
}
public override bool CanEvaluateToNumber (Project context)
{
if (token.Type == TokenType.Number)
return true;
else
return false;
}
public override bool CanEvaluateToString (Project context)
{
return true;
}
private static Token EvaluateToken (Token token, Project context)
{
OldExpression oe = new OldExpression (context);
oe.ParseSource (token.Value);
return new Token ((string) oe.ConvertTo (typeof (string)), token.Type);
}
}
}
#endif
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