49 lines
2 KiB
Java
49 lines
2 KiB
Java
// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
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// Licensed under the MIT License:
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package org.capnproto;
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import java.nio.ByteBuffer;
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final class StructPointer{
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public static short dataSize(long ref) {
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// in words.
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return (short)(WirePointer.upper32Bits(ref) & 0xffff);
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}
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public static short ptrCount(long ref) {
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return (short)(WirePointer.upper32Bits(ref) >>> 16);
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}
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public static int wordSize(long ref) {
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return (int)dataSize(ref) + (int)ptrCount(ref);
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}
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public static void setFromStructSize(ByteBuffer buffer, int offset, StructSize size) {
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buffer.putShort(8 * offset + 4, size.data);
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buffer.putShort(8 * offset + 6, size.pointers);
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}
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public static void set(ByteBuffer buffer, int offset, short dataSize, short pointerCount) {
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buffer.putShort(8 * offset + 4, dataSize);
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buffer.putShort(8 * offset + 6, pointerCount);
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}
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}
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