public static new EXPRESSION parse(Token first, iSCOPE context)
{
EXPRESSION result;
Token token = (first != null) ? first : get();
switch (token.code)
{
case TokenCode.Plus:
case TokenCode.Minus:
case TokenCode.Tilde:
forget();
EXPRESSION second = UNARY.parse(null, context);
result = new UNARY(token, second);
result.setSpan(token.span, second.span);
break;
case TokenCode.New:
forget();
UNIT_REF unitRef = UNIT_REF.parse(null, false, context);
result = new NEW(unitRef);
result.setSpan(token.span, unitRef.span);
break;
default:
result = POWER.parse(token, context);
break;
}
return(result);
}
public static new EXPRESSION parse(Token token, iSCOPE context)
{
EXPRESSION result = SECONDARY.parse(token, context);
while (true)
{
token = get();
if (token.code == TokenCode.Power)
{
forget();
EXPRESSION right = UNARY.parse(null, context);
Span begin = result.span;
result = new POWER(result, right);
result.setSpan(begin, right.span);
}
else
{
goto Out;
}
}
Out:
return(result);
}