public Token Read()
{
if (Index >= Tokens.Count - 1)
{
throw ScriptError.UnexpectedEOF(null);
}
return(Tokens[Index++]);
}
public bool Match(params TokenType[] types)
{
if (Index >= Tokens.Count)
{
throw ScriptError.UnexpectedEOF(null);
}
foreach (var type in types)
{
if (Tokens[Index].Type == type)
{
return(true);
}
}
return(false);
}
public Token Expect(params TokenType[] types)
{
if (Index >= Tokens.Count)
{
throw ScriptError.UnexpectedEOF(null);
}
foreach (var type in types)
{
if (Tokens[Index].Type == type)
{
var token = Tokens[Index];
Index++;
return(token);
}
}
throw ScriptError.UnexpectedToken(Tokens[Index], Tokens[Index].Contents);
}
