Method makeByte

dexfixer/src/com/android/dx/dex/code/InsnFormat.java:526–536

Helper method to combine two nibbles into a byte. @param low 0..15; low nibble @param high 0..15; high nibble @return 0..255; combined value

(int low, int high)

     * @return {@code 0..255;} combined value
     */
    protected static int makeByte(int low, int high) {
        if ((low & 0xf) != low) {
            throw new IllegalArgumentException("low out of range 0..15");
        }

        if ((high & 0xf) != high) {
            throw new IllegalArgumentException("high out of range 0..15");
        }

        return low | (high << 4);
    }

    /**
     * Writes one code unit to the given output destination.