private AST Node(bool isFirstNode)
{
if (currentToken.Type == TokenType.PLUS || currentToken.Type == TokenType.MINUS)
{
OperatorToken unaryOpToken = Eat(currentToken.Type) as OperatorToken;
return(new UnaryOpAST(unaryOpToken, Node(isFirstNode)));
}
else if (currentToken.Type == TokenType.LPAR)
{
Eat(TokenType.LPAR);
BusAST busAST = Bus();
Eat(TokenType.RPAR);
return(busAST);
}
else if (currentToken.Type == TokenType.DIGIT)
{
DigitToken digitToken = Eat(TokenType.DIGIT) as DigitToken;
return(new DigitBlockAST(digitToken));
}
else if (currentToken.Type == TokenType.LBRK)
{
if (isFirstNode)
{
return(MatrixMux());
}
else
{
return(MatrixDeMux());
}
}
else
{
return(Selector());
}
}
private Group Visit(BusAST busAST)
{
Group busGroup = new Group();
foreach (ChainAST chainAST in busAST.Chains)
{
Group group = Visit(chainAST);
busGroup.Merge(group);
}
return(busGroup);
}