protected internal override void Parse(Lexer lexer, List <ASTree> res)
{
Token t = lexer.Read();
if (t.IsIdentifier)
{
foreach (String token in tokens)
{
if (token.Equals(t.Text))
{
Find(res, t);
return;
}
}
}
if (tokens.Length > 0)
{
throw new ParseException(tokens[0] + " expected.", t);
}
else
{
throw new ParseException(t);
}
}
public void Start()
{
var s = File.ReadAllText("in.txt");
//var s = Console.ReadLine();
LineNumberReader reader = new LineNumberReader(s);
Lexer l = new Lexer(reader);
for (Token t; (t = l.Read()) != Token.EOF;)
{
Console.WriteLine("=> " + t.Text);
}
}
protected internal override void Parse(Lexer lexer, List <ASTree> res)
{
Token t = lexer.Read();
if (Test(t))
{
ASTree leaf = factory.Make(t);
res.Add(leaf);
}
else
{
throw new ParseException(t);
}
}
private ASTree doShift(Lexer lexer, ASTree left, int prec)
{
ArrayList <ASTree> list = new ArrayList <ASTree>();
list.Add(left);
list.Add(new ASTLeaf(lexer.Read()));
ASTree right = factor.Parse(lexer);
Precedence next;
while ((next = nextOperator(lexer)) != null &&
rightIsExpr(prec, next))
{
right = doShift(lexer, right, next.value);
}
list.Add(right);
return(factory.Make(list));
}
