private Expression CharSetToExpression(BitArray charSet)
{
Expression expression = null;
for (int i = 0; i < charSet.Length; i++)
{
if (charSet.Get(i))
{
var io = new Expression.IO {
Byte = (byte)i, In = true, Out = true
};
if (expression == null)
{
expression = io;
}
else
{
expression = new Expression.Union
{
Left = expression,
Right = io,
};
}
}
}
if (expression == null)
{
expression = new Expression.Nothing();
}
return(expression);
}
private Expression ReadQuotedOutput()
{
Expression expression = null;
while (Peek() != '"')
{
var b = Read();
if (b == '\\')
{
b = Read();
}
var io = new Expression.IO {
Byte = b, In = false, Out = true
};
if (expression == null)
{
expression = io;
}
else
{
expression = new Expression.Concat
{
Left = expression,
Right = io,
};
}
}
_codeIndex++;
return(expression);
}
