gistfile1.java

	private static ConstantPushInstruction nextPush(Instruction[] instructions, int index, int skip) {
		for (; index < instructions.length; index++) {
			Instruction i = instructions[index];
			if (i.getOpcode() == Constants.BIPUSH || i.getOpcode() == Constants.SIPUSH) {
				if (skip == 0) {
					return (ConstantPushInstruction) instructions[index];
				}
				skip--;
			}
		}
		return null;
	}

	private static boolean nextPushIs(Instruction[] instructions, int index, int skip, int value) {
		ConstantPushInstruction push = nextPush(instructions, index, skip);
		return push != null && value == push.getValue().intValue();
	}

	private static int getRevision(JavaClass jc) {
		for (Method m : jc.getMethods()) {
			if (m.getName().equals("init")) {
				InstructionList list = new InstructionList(m.getCode().getCode());
				Instruction[] instructions = list.getInstructions();
				for (int i = 0; i < instructions.length; i++) {
					if (nextPushIs(instructions, i, 0, 765) && nextPushIs(instructions, i, 1, 503)) {
						return nextPush(instructions, i, 2).getValue().intValue();
					}
				}
			}
		}
		return -1;
	}