| /* |
| * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #warn This file is preprocessed before being compiled |
| |
| package java.nio; |
| |
| import jdk.internal.misc.Unsafe; |
| |
| |
| class ByteBufferAs$Type$Buffer$RW$$BO$ // package-private |
| extends {#if[ro]?ByteBufferAs}$Type$Buffer{#if[ro]?$BO$} |
| { |
| |
| #if[rw] |
| |
| protected final ByteBuffer bb; |
| |
| #end[rw] |
| |
| ByteBufferAs$Type$Buffer$RW$$BO$(ByteBuffer bb) { // package-private |
| #if[rw] |
| super(-1, 0, |
| bb.remaining() >> $LG_BYTES_PER_VALUE$, |
| bb.remaining() >> $LG_BYTES_PER_VALUE$); |
| this.bb = bb; |
| // enforce limit == capacity |
| int cap = this.capacity(); |
| this.limit(cap); |
| int pos = this.position(); |
| assert (pos <= cap); |
| address = bb.address; |
| #else[rw] |
| super(bb); |
| #end[rw] |
| } |
| |
| ByteBufferAs$Type$Buffer$RW$$BO$(ByteBuffer bb, |
| int mark, int pos, int lim, int cap, |
| long addr) |
| { |
| #if[rw] |
| super(mark, pos, lim, cap); |
| this.bb = bb; |
| address = addr; |
| assert address >= bb.address; |
| #else[rw] |
| super(bb, mark, pos, lim, cap, addr); |
| #end[rw] |
| } |
| |
| @Override |
| Object base() { |
| return bb.hb; |
| } |
| |
| public $Type$Buffer slice() { |
| int pos = this.position(); |
| int lim = this.limit(); |
| int rem = (pos <= lim ? lim - pos : 0); |
| long addr = byteOffset(pos); |
| return new ByteBufferAs$Type$Buffer$RW$$BO$(bb, -1, 0, rem, rem, addr); |
| } |
| |
| public $Type$Buffer duplicate() { |
| return new ByteBufferAs$Type$Buffer$RW$$BO$(bb, |
| this.markValue(), |
| this.position(), |
| this.limit(), |
| this.capacity(), |
| address); |
| } |
| |
| public $Type$Buffer asReadOnlyBuffer() { |
| #if[rw] |
| return new ByteBufferAs$Type$BufferR$BO$(bb, |
| this.markValue(), |
| this.position(), |
| this.limit(), |
| this.capacity(), |
| address); |
| #else[rw] |
| return duplicate(); |
| #end[rw] |
| } |
| |
| #if[rw] |
| |
| private int ix(int i) { |
| int off = (int) (address - bb.address); |
| return (i << $LG_BYTES_PER_VALUE$) + off; |
| } |
| |
| protected long byteOffset(long i) { |
| return (i << $LG_BYTES_PER_VALUE$) + address; |
| } |
| |
| public $type$ get() { |
| $memtype$ x = UNSAFE.get$Memtype$Unaligned(bb.hb, byteOffset(nextGetIndex()), |
| {#if[boB]?true:false}); |
| return $fromBits$(x); |
| } |
| |
| public $type$ get(int i) { |
| $memtype$ x = UNSAFE.get$Memtype$Unaligned(bb.hb, byteOffset(checkIndex(i)), |
| {#if[boB]?true:false}); |
| return $fromBits$(x); |
| } |
| |
| #if[streamableType] |
| $type$ getUnchecked(int i) { |
| $memtype$ x = UNSAFE.get$Memtype$Unaligned(bb.hb, byteOffset(i), |
| {#if[boB]?true:false}); |
| return $fromBits$(x); |
| } |
| #end[streamableType] |
| |
| #end[rw] |
| |
| public $Type$Buffer put($type$ x) { |
| #if[rw] |
| $memtype$ y = $toBits$(x); |
| UNSAFE.put$Memtype$Unaligned(bb.hb, byteOffset(nextPutIndex()), y, |
| {#if[boB]?true:false}); |
| return this; |
| #else[rw] |
| throw new ReadOnlyBufferException(); |
| #end[rw] |
| } |
| |
| public $Type$Buffer put(int i, $type$ x) { |
| #if[rw] |
| $memtype$ y = $toBits$(x); |
| UNSAFE.put$Memtype$Unaligned(bb.hb, byteOffset(checkIndex(i)), y, |
| {#if[boB]?true:false}); |
| return this; |
| #else[rw] |
| throw new ReadOnlyBufferException(); |
| #end[rw] |
| } |
| |
| public $Type$Buffer compact() { |
| #if[rw] |
| int pos = position(); |
| int lim = limit(); |
| assert (pos <= lim); |
| int rem = (pos <= lim ? lim - pos : 0); |
| |
| ByteBuffer db = bb.duplicate(); |
| db.limit(ix(lim)); |
| db.position(ix(0)); |
| ByteBuffer sb = db.slice(); |
| sb.position(pos << $LG_BYTES_PER_VALUE$); |
| sb.compact(); |
| position(rem); |
| limit(capacity()); |
| discardMark(); |
| return this; |
| #else[rw] |
| throw new ReadOnlyBufferException(); |
| #end[rw] |
| } |
| |
| public boolean isDirect() { |
| return bb.isDirect(); |
| } |
| |
| public boolean isReadOnly() { |
| return {#if[rw]?false:true}; |
| } |
| |
| #if[char] |
| |
| public String toString(int start, int end) { |
| if ((end > limit()) || (start > end)) |
| throw new IndexOutOfBoundsException(); |
| try { |
| int len = end - start; |
| char[] ca = new char[len]; |
| CharBuffer cb = CharBuffer.wrap(ca); |
| CharBuffer db = this.duplicate(); |
| db.position(start); |
| db.limit(end); |
| cb.put(db); |
| return new String(ca); |
| } catch (StringIndexOutOfBoundsException x) { |
| throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| |
| // --- Methods to support CharSequence --- |
| |
| public CharBuffer subSequence(int start, int end) { |
| int pos = position(); |
| int lim = limit(); |
| assert (pos <= lim); |
| pos = (pos <= lim ? pos : lim); |
| int len = lim - pos; |
| |
| if ((start < 0) || (end > len) || (start > end)) |
| throw new IndexOutOfBoundsException(); |
| return new ByteBufferAsCharBuffer$RW$$BO$(bb, |
| -1, |
| pos + start, |
| pos + end, |
| capacity(), |
| address); |
| } |
| |
| #end[char] |
| |
| |
| public ByteOrder order() { |
| #if[boB] |
| return ByteOrder.BIG_ENDIAN; |
| #end[boB] |
| #if[boL] |
| return ByteOrder.LITTLE_ENDIAN; |
| #end[boL] |
| } |
| |
| #if[char] |
| ByteOrder charRegionOrder() { |
| return order(); |
| } |
| #end[char] |
| } |