int FindCodeKeyWord_While(IList<Token> tokens, int pos)
{
int b1;
int fs1 = pos + 1;
int fe1 = FindCodeAny(tokens, ref fs1, out b1);
int b2;
int fs2 = fe1 + 1;
int fe2 = FindCodeAny(tokens, ref fs2, out b2);
return fe2;
}
int FindCodeKeyWord_Dowhile(IList<Token> tokens, int pos)