internal override bool apply(ParseContext ctxt, ref D_ result, ref AbstractParsecError err)
{
if (ctxt.isEof())
{
return Scanners.setErrorExpecting(out err, expected_name, ctxt);
}
ctxt.next();
return true;
}
internal override bool apply(ParseContext ctxt, ref D_ result, ref AbstractParsecError err)
{
int at = ctxt.getAt();
string src = ctxt.getSource();
int mlen = pp.Match(src, at, src.Length);
if (mlen < 0)
{
return Scanners.setErrorExpecting(out err, expected_name, ctxt);
}
ctxt.next(mlen);
return true;
}
internal override bool apply(ParseContext ctxt, ref D_ result, ref AbstractParsecError err)
{
if (!open.parse(ctxt, ref result, ref err))
{
return false;
}
for (int level = 1; level > 0; )
{
int at = ctxt.getAt();
if (close.parse(ctxt, ref result, ref err))
{
if (at == ctxt.getAt())
{
throw new IllegalParserStateException("closing comment scanner not consuming input.");
}
level--;
continue;
}
if (at != ctxt.getAt())
{
return false;
}
if (open.parse(ctxt, ref result, ref err))
{
if (at == ctxt.getAt())
throw new IllegalParserStateException("opening comment scanner not consuming input.");
level++;
continue;
}
if (at != ctxt.getAt())
{
return false;
}
if (commented.parse(ctxt, ref result, ref err))
{
if (at == ctxt.getAt())
throw new IllegalParserStateException("commented scanner not consuming input.");
continue;
}
return false;
}
return true;
}
private static bool setErrorExpecting(out AbstractParsecError err, string msg, ParseContext ctxt)
{
err = ParserChores.raiseExpecting(msg, ctxt);
return false;
}
internal override bool apply(ParseContext ctxt, ref D_ result, ref AbstractParsecError err)
{
int from = ctxt.getAt();
if (!outer_scanner.parse(ctxt, ref result, ref err))
return false;
ScannerState inner_ctxt = new ScannerState(ctxt.getSource(), from, module, ctxt.getPositionMap(),
ctxt.getAt() - from);
return ParserChores.cont(ctxt, inner_ctxt, nested, ref result, ref err);
}