public override CharFA ToFA(EbnfDocument parent, Cfg cfg)
{
string sym = "";
if (null != parent)
{
sym = parent.GetContainingIdForExpression(this);
}
if (null == Right)
{
if (null == Left)
{
return(null);
}
var fa = Left.ToFA(parent, cfg);
fa.FirstAcceptingState.AcceptingSymbol = sym;
return(fa);
}
else if (null == Left)
{
var fa = Right.ToFA(parent, cfg);
fa.FirstAcceptingState.AcceptingSymbol = sym;
return(fa);
}
return(CharFA.Concat(new CharFA[] { Left.ToFA(parent, cfg), Right.ToFA(parent, cfg) }, sym));
}
public override CharFA ToFA(EbnfDocument parent, Cfg cfg)
{
string sym = "";
if (null != parent)
{
sym = parent.GetContainingIdForExpression(this);
}
if (null == Right)
{
if (null == Left)
{
return(null);
}
return(CharFA.Optional(Left.ToFA(parent, cfg), sym));
}
else if (null == Left)
{
return(CharFA.Optional(Right.ToFA(parent, cfg), sym));
}
return(CharFA.Or(new CharFA[] { Left.ToFA(parent, cfg), Right.ToFA(parent, cfg) }, sym));
}
public override CharFA ToFA(EbnfDocument parent, Cfg cfg)
{
if (null == Expression)
{
return(null);
}
return(CharFA.Optional(Expression.ToFA(parent, cfg), (null == parent) ? "" : parent.GetContainingIdForExpression(this)));
}
public override CharFA ToFA(EbnfDocument parent, Cfg cfg)
{
if (null == Expression)
{
return(null);
}
var result = CharFA.Repeat(Expression.ToFA(parent, cfg), (null == parent) ? "" : parent.GetContainingIdForExpression(this));
if (IsOptional)
{
result = CharFA.Optional(result);
}
return(result);
}