private IRubyObject offsetCommon(ThreadContext context, int i, boolean is_19) {
check();
Ruby runtime = context.getRuntime();
if (i < 0 || (regs == null ? 1 : regs.numRegs) <= i)
throw runtime.newIndexError("index " + i + " out of matches");
int b, e;
if (regs == null) {
b = begin;
e = end;
} else {
b = regs.beg[i];
e = regs.end[i];
}
if (b < 0) return runtime.newArray(runtime.getNil(), runtime.getNil());
if (is_19 && !str.singleByteOptimizable()) {
updateCharOffset();
b = charOffsets.beg[i];
e = charOffsets.end[i];
}
return runtime.newArray(RubyFixnum.newFixnum(runtime, b), RubyFixnum.newFixnum(runtime, e));
}
private int endCommon(Ruby runtime, int i) {
check();
if (i < 0 || (regs == null ? 1 : regs.numRegs) <= i)
throw runtime.newIndexError("index " + i + " out of matches");
return regs == null ? end : regs.end[i];
}