package org.jruby.ir;

public class CodeVersion {

private static long _nextVersionNumber = 0L;

// SSS FIXME: Does int suffice, or do we need long?

public final long _version;

public static CodeVersion getClassVersionToken() {

return new ClassCodeVersion();

}

public static CodeVersion getMethodVersionToken() {

return new MethodCodeVersion();

}

protected CodeVersion(long v) { _version = v; }

static class ClassCodeVersion extends CodeVersion {

ClassCodeVersion() { super(_nextVersionNumber+1); _nextVersionNumber++; }

public String toString() { return "C_" + super.toString(); }

private static long _nextVersionNumber = 0L;

}

static class MethodCodeVersion extends CodeVersion {

MethodCodeVersion() { super(_nextVersionNumber+1); _nextVersionNumber++; }

public String toString() { return "M_" + super.toString(); }

private static long _nextVersionNumber = 0L;

}

}