1122 lines
13 KiB
Java
1122 lines
13 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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* Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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// -- This file was mechanically generated: Do not edit! -- //
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// Android-note: This file is generated by ojluni/src/tools/gensrc_android.sh.
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package java.nio;
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import java.util.Objects;
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import libcore.io.Memory;
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/**
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* A read/write HeapCharBuffer.
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*/
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// Android-changed: Make it final as no subclasses exist.
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final class HeapCharBuffer
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extends CharBuffer
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{
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// Android-removed: Removed unused constants.
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/*
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// Cached array base offset
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private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset(char[].class);
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// Cached array index scale
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private static final long ARRAY_INDEX_SCALE = UNSAFE.arrayIndexScale(char[].class);
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*/
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// For speed these fields are actually declared in X-Buffer;
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// these declarations are here as documentation
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/*
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protected final char[] hb;
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protected final int offset;
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*/
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// Android-removed: Removed MemorySegmentProxy to be supported yet.
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HeapCharBuffer(int cap, int lim) { // package-private
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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// super(-1, 0, lim, cap, new char[cap], 0);
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this(cap, lim, false);
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/*
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hb = new char[cap];
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offset = 0;
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*/
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// Android-removed: buffer.address is only used by Direct*Buffer.
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// this.address = ARRAY_BASE_OFFSET;
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}
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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private HeapCharBuffer(int cap, int lim, boolean isReadOnly) {
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super(-1, 0, lim, cap, new char[cap], 0);
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this.isReadOnly = isReadOnly;
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}
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// Android-removed: Removed MemorySegmentProxy to be supported yet.
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HeapCharBuffer(char[] buf, int off, int len) { // package-private
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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// super(-1, off, off + len, buf.length, buf, 0);
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this(buf, off, len, false);
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/*
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hb = buf;
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offset = 0;
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*/
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// Android-removed: buffer.address is only used by Direct*Buffer.
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// this.address = ARRAY_BASE_OFFSET;
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}
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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private HeapCharBuffer(char[] buf, int off, int len, boolean isReadOnly) {
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super(-1, off, off + len, buf.length, buf, 0);
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this.isReadOnly = isReadOnly;
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}
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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// Android-changed: Make the method private.
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// Android-removed: Removed MemorySegmentProxy to be supported yet.
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private HeapCharBuffer(char[] buf,
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int mark, int pos, int lim, int cap,
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int off, boolean isReadOnly)
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{
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super(mark, pos, lim, cap, buf, off);
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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this.isReadOnly = isReadOnly;
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/*
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hb = buf;
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offset = off;
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*/
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// Android-removed: buffer.address is only used by Direct*Buffer.
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// this.address = ARRAY_BASE_OFFSET + off * ARRAY_INDEX_SCALE;
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}
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public CharBuffer slice() {
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int pos = this.position();
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int lim = this.limit();
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int rem = (pos <= lim ? lim - pos : 0);
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return new HeapCharBuffer(hb,
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-1,
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0,
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rem,
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rem,
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// Android-removed: Removed MemorySegmentProxy not supported yet.
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pos + offset,
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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isReadOnly);
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}
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@Override
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public CharBuffer slice(int index, int length) {
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Objects.checkFromIndexSize(index, length, limit());
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return new HeapCharBuffer(hb,
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-1,
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0,
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length,
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length,
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// Android-removed: Removed MemorySegmentProxy not supported yet.
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index + offset,
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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isReadOnly);
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}
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public CharBuffer duplicate() {
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return new HeapCharBuffer(hb,
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this.markValue(),
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this.position(),
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this.limit(),
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this.capacity(),
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// Android-removed: Removed MemorySegmentProxy not supported yet.
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offset,
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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isReadOnly);
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}
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public CharBuffer asReadOnlyBuffer() {
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// Android-removed: Removed MemorySegmentProxy not supported yet.
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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/*
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return new HeapCharBufferR(hb,
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this.markValue(),
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this.position(),
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this.limit(),
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this.capacity(),
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offset, segment);
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*/
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return new HeapCharBuffer(hb,
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this.markValue(),
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this.position(),
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this.limit(),
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this.capacity(),
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offset,
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true /* isReadOnly */);
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}
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// Android-changed: Make it private as no subclasses exist.
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private int ix(int i) {
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return i + offset;
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}
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@Override
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public char get() {
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return hb[ix(nextGetIndex())];
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}
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@Override
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public char get(int i) {
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return hb[ix(checkIndex(i))];
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}
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@Override
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char getUnchecked(int i) {
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return hb[ix(i)];
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}
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@Override
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public CharBuffer get(char[] dst, int offset, int length) {
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checkScope();
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Objects.checkFromIndexSize(offset, length, dst.length);
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int pos = position();
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if (length > limit() - pos)
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throw new BufferUnderflowException();
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System.arraycopy(hb, ix(pos), dst, offset, length);
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position(pos + length);
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return this;
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}
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@Override
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public CharBuffer get(int index, char[] dst, int offset, int length) {
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checkScope();
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Objects.checkFromIndexSize(index, length, limit());
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Objects.checkFromIndexSize(offset, length, dst.length);
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System.arraycopy(hb, ix(index), dst, offset, length);
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return this;
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}
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public boolean isDirect() {
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return false;
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}
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@Override
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public boolean isReadOnly() {
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// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
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return isReadOnly;
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}
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@Override
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public CharBuffer put(char x) {
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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hb[ix(nextPutIndex())] = x;
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return this;
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}
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@Override
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public CharBuffer put(int i, char x) {
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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hb[ix(checkIndex(i))] = x;
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return this;
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}
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@Override
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public CharBuffer put(char[] src, int offset, int length) {
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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checkScope();
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Objects.checkFromIndexSize(offset, length, src.length);
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int pos = position();
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if (length > limit() - pos)
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throw new BufferOverflowException();
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System.arraycopy(src, offset, hb, ix(pos), length);
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position(pos + length);
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return this;
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}
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@Override
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public CharBuffer put(CharBuffer src) {
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checkScope();
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// Android-changed: Speed-up this operation if the src is a heap or direct buffer.
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// super.put(src);
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if (src == this) {
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throw createSameBufferException();
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}
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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if (src instanceof HeapCharBuffer sb) {
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int n = sb.remaining();
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if (n > remaining())
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throw new BufferOverflowException();
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System.arraycopy(sb.hb, sb.ix(sb.position()),
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hb, ix(position()), n);
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sb.position(sb.position() + n);
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position(position() + n);
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} else if (src.isDirect()) {
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int n = src.remaining();
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if (n > remaining())
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throw new BufferOverflowException();
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src.get(hb, ix(position()), n);
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position(position() + n);
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} else {
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super.put(src);
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}
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return this;
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}
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@Override
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public CharBuffer put(int index, CharBuffer src, int offset, int length) {
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checkScope();
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super.put(index, src, offset, length);
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return this;
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}
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@Override
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public CharBuffer put(int index, char[] src, int offset, int length) {
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checkScope();
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Objects.checkFromIndexSize(index, length, limit());
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Objects.checkFromIndexSize(offset, length, src.length);
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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System.arraycopy(src, offset, hb, ix(index), length);
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return this;
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}
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@Override
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public CharBuffer put(String src, int start, int end) {
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checkScope();
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int length = end - start;
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Objects.checkFromIndexSize(start, length, src.length());
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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int pos = position();
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int lim = limit();
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int rem = (pos <= lim) ? lim - pos : 0;
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if (length > rem)
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throw new BufferOverflowException();
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src.getChars(start, end, hb, ix(pos));
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position(pos + length);
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return this;
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}
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@Override
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public CharBuffer compact() {
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
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throwIfReadOnly();
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int pos = position();
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int lim = limit();
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assert (pos <= lim);
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int rem = (pos <= lim ? lim - pos : 0);
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System.arraycopy(hb, ix(pos), hb, ix(0), rem);
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position(rem);
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limit(capacity());
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discardMark();
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return this;
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}
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String toString(int start, int end) { // package-private
|
|
try {
|
|
return new String(hb, start + offset, end - start);
|
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} catch (StringIndexOutOfBoundsException x) {
|
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throw new IndexOutOfBoundsException();
|
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}
|
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}
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// --- Methods to support CharSequence ---
|
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|
|
public CharBuffer subSequence(int start, int end) {
|
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int pos = position();
|
|
Objects.checkFromToIndex(start, end, limit() - pos);
|
|
return new HeapCharBuffer(hb,
|
|
-1,
|
|
pos + start,
|
|
pos + end,
|
|
capacity(),
|
|
// Android-removed: Removed MemorySegmentProxy not supported yet.
|
|
offset,
|
|
// Android-changed: Merge the Read-only buffer class with this Read-Write buffer class.
|
|
isReadOnly);
|
|
}
|
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public ByteOrder order() {
|
|
return ByteOrder.nativeOrder();
|
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}
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|
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ByteOrder charRegionOrder() {
|
|
return order();
|
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}
|
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|
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// Android-added: Merge the Read-only buffer class with this Read-Write buffer class.
|
|
private void throwIfReadOnly() {
|
|
if (isReadOnly) {
|
|
throw new ReadOnlyBufferException();
|
|
}
|
|
}
|
|
}
|