Examples of com.peterhi.runtime.Buffer.skip()

com.peterhi.runtime.Buffer.skip()
Skips a number of bits, specified by {@code numOfBitsToSkip}, so that the read cursor will fast forward to the desired location. The reference implementation simply reads and discards the data. Note that according to the availability of the data in the current {@code Buffer}, the actually skipped number of bits might be less than the one passed as the parameter. So it is advised to always use the return value to check for it. @param numOfBitsToSkip The number of {@code bit}s to skip. @return The number of {@code bit}s actually skipped. If the return value is smaller than {@code numOfBitsToSkip}it usually indicates that the cursor has been fast forwarded to the end of the available bits stream. @throws IllegalArgumentException one of the following occurs:
- {@code numOfBitsToSkip} is negative.
- {@code numOfBitsToSkip} is zero.
@throws IOException the underlying I/O operation fails.

      assertEquals(2, existingDataOffsetLengthBitsNotAligned.size());
      assertEquals(14, existingDataOffsetLengthBitsNotAligned.readable());
      assertEquals(14, existingDataOffsetLengthBitsNotAligned.written());
      assertEquals(2, existingDataOffsetLengthBitsNotAligned.writable());
      assertEquals(0, existingDataOffsetLengthBitsNotAligned.read());
      existingDataOffsetLengthBitsNotAligned.skip(3);
      assertEquals(1, existingDataOffsetLengthBitsNotAligned.read());
      existingDataOffsetLengthBitsNotAligned.skip(9);
      assertEquals(-1, existingDataOffsetLengthBitsNotAligned.read());
    }

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      assertEquals(14, existingDataOffsetLengthBitsNotAligned.written());
      assertEquals(2, existingDataOffsetLengthBitsNotAligned.writable());
      assertEquals(0, existingDataOffsetLengthBitsNotAligned.read());
      existingDataOffsetLengthBitsNotAligned.skip(3);
      assertEquals(1, existingDataOffsetLengthBitsNotAligned.read());
      existingDataOffsetLengthBitsNotAligned.skip(9);
      assertEquals(-1, existingDataOffsetLengthBitsNotAligned.read());
    }
    
    {
      // 111[11111 1111]1111

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      assertEquals(2, existingDataOffsetLengthBitsAligned.size());
      assertEquals(9, existingDataOffsetLengthBitsAligned.readable());
      assertEquals(9, existingDataOffsetLengthBitsAligned.written());
      assertEquals(7, existingDataOffsetLengthBitsAligned.writable());
      assertEquals(1, existingDataOffsetLengthBitsAligned.read());
      existingDataOffsetLengthBitsAligned.skip(7);
      assertEquals(1, existingDataOffsetLengthBitsAligned.read());
      assertEquals(-1, existingDataOffsetLengthBitsAligned.read());
    }
    
    {

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    assertEquals(1, testBuffer.read());
    
    // [1]1111111
    //    |||||
    //   skipped
    testBuffer.skip(5);
    
    // []11111111
    //    |||||
    //   skipped
    assertEquals(1, testBuffer.read());

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    // [0110000]0 !
    assertEquals(0, withExistingData.read());
    
    // [011]00000 !
    withExistingData.skip(4);
    
    // [011]!00000 ==> SNAPSHOT marked as '!'
    withExistingData.mark();
    
    // [01]1!00000

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    }
    
    {
      Buffer allData = new Buffer(2);
      allData.fill(12, 1);
      allData.skip(4);
      assertArrayEquals(new byte[] { -1, 15 }, allData.toByteArray(Buffer.COPY_METHOD_ALL_DATA));
    }
    
    {
      Buffer defaultBuf = new Buffer(1);

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    }
    
    {
      Buffer defaultBuf = new Buffer(2);
      defaultBuf.fill(12, 1);
      defaultBuf.skip(4);
      assertArrayEquals(new byte[] { (byte )240, 15 }, defaultBuf.toByteArray(Buffer.COPY_METHOD_DEFAULT));
    }
    
    {
      Buffer aligned = new Buffer(1);

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    }
    
    {
      Buffer aligned = new Buffer(2);
      aligned.fill(12, 1);
      aligned.skip(4);
      assertArrayEquals(new byte[] { (byte )255 }, aligned.toByteArray(Buffer.COPY_METHOD_ALIGNED));
    }
    
    try {
      Buffer invalidCopyMethod = new Buffer(new byte[0]);

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