private ExpressionTokens GetSetTokens(IList <ExpressionToken> Tokens)
{
ExpressionTokens result = null;
if (Tokens.Count >= 2)
{
if (Linq2.Any(Tokens, t => t.TokenType == TokenType.EQUAL_OPERATOR))
{
for (var i = 0; i < Tokens.Count; i++)
{
ExpressionToken token = Tokens[i];
if (token.TokenType == TokenType.EQUAL_OPERATOR)
{
break;
}
if (result == null)
{
result = new ExpressionTokens();
}
result.Add(token);
}
}
}
return(result);
}
//////////////////////////////////////////////////
public Int32 IndexOfSequence(IEnumerable <ExpressionToken> Sequence)
{
Int32 index = -1;
#if !NET20
if (Sequence.Any())
#else
if (Linq2.Any(Sequence))
#endif
{
#if !NET20
index = this.IndexOf(Sequence.First());
#else
index = this.IndexOf(Linq2.FirstOrDefault(Sequence));
#endif
if (index >= 0)
{
Int32 nextIndex = index;
foreach (ExpressionToken item in Sequence)
{
if (this.IndexOf(item) != nextIndex)
{
return(-1);
}
nextIndex++;
}
}
}
return(index);
}
private ExpressionTokens TakeSetTokens(IList <ExpressionToken> Tokens, Boolean RemoveTakenTokens)
{
ExpressionTokens result = null;
if (Tokens.Count >= 2)
{
if (Linq2.Any(Tokens, t => t.TokenType == TokenType.EQUAL_OPERATOR))
{
for (var i = 0; i < Tokens.Count; i++)
{
ExpressionToken token = Tokens[i];
if (token.TokenType == TokenType.EQUAL_OPERATOR)
{
if (RemoveTakenTokens)
{
Tokens.RemoveAt(i);
}
break;
}
if (result == null)
{
result = new ExpressionTokens();
}
result.Add(token.Clone());
if (RemoveTakenTokens)
{
Tokens.RemoveAt(i);
i--;
}
}
}
}
return(result);
}
