//caller should not change input after it is passed in.
internal ParserState(Tok[] input,
int at, string module, PositionMap pmap,
int end_index,
string eof_str, ShowToken show)
: base(at, module, pmap)
{
this.input = input;
this.sys_unexpected = new ParsecError[input.Length];
this.show = show;
this.end_index = end_index;
this.eof_unexpected = ParsecError.raiseSysUnexpected(
end_index, eof_str);
}
private ParsecError getSysUnexpected(int i)
{
if (i >= sys_unexpected.Length)
{
return(eof_unexpected);
}
ParsecError r = sys_unexpected[i];
if (r == null)
{
Tok ptok = input[i];
r = ParsecError.raiseSysUnexpected(ptok.Index,
show(ptok.Token));
sys_unexpected[i] = r;
}
return(r);
}
internal override ParsecError getSysUnexpected()
{
string msg = (len == at) ? "EOF" : ("" + src[at]);
return(ParsecError.raiseSysUnexpected(getIndex(), msg));
}