/* * Copyright (C) 2014 The Android Open Source Project * Copyright (c) 2000, 2021, 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. */ // -- This file was mechanically generated: Do not edit! -- // // Android-note: This file is generated by ojluni/src/tools/gensrc_android.sh. package java.nio; import java.util.Objects; import libcore.io.Memory; /** * A read/write HeapCharBuffer. */ // Android-changed: Make it final as no subclasses exist. final class HeapCharBuffer extends CharBuffer { // Android-removed: Removed unused constants. /* // Cached array base offset private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset(char[].class); // Cached array index scale private static final long ARRAY_INDEX_SCALE = UNSAFE.arrayIndexScale(char[].class); */ // For speed these fields are actually declared in X-Buffer; // these declarations are here as documentation /* protected final char[] hb; protected final int offset; */ // Android-removed: Removed MemorySegmentProxy to be supported yet. HeapCharBuffer(int cap, int lim) { // package-private // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. // super(-1, 0, lim, cap, new char[cap], 0); this(cap, lim, false); /* hb = new char[cap]; offset = 0; */ // Android-removed: buffer.address is only used by Direct*Buffer. // this.address = ARRAY_BASE_OFFSET; } // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. private HeapCharBuffer(int cap, int lim, boolean isReadOnly) { super(-1, 0, lim, cap, new char[cap], 0); this.isReadOnly = isReadOnly; } // Android-removed: Removed MemorySegmentProxy to be supported yet. HeapCharBuffer(char[] buf, int off, int len) { // package-private // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. // super(-1, off, off + len, buf.length, buf, 0); this(buf, off, len, false); /* hb = buf; offset = 0; */ // Android-removed: buffer.address is only used by Direct*Buffer. // this.address = ARRAY_BASE_OFFSET; } // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. private HeapCharBuffer(char[] buf, int off, int len, boolean isReadOnly) { super(-1, off, off + len, buf.length, buf, 0); this.isReadOnly = isReadOnly; } // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. // Android-changed: Make the method private. // Android-removed: Removed MemorySegmentProxy to be supported yet. private HeapCharBuffer(char[] buf, int mark, int pos, int lim, int cap, int off, boolean isReadOnly) { super(mark, pos, lim, cap, buf, off); // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. this.isReadOnly = isReadOnly; /* hb = buf; offset = off; */ // Android-removed: buffer.address is only used by Direct*Buffer. // this.address = ARRAY_BASE_OFFSET + off * ARRAY_INDEX_SCALE; } public CharBuffer slice() { int pos = this.position(); int lim = this.limit(); int rem = (pos <= lim ? lim - pos : 0); return new HeapCharBuffer(hb, -1, 0, rem, rem, // Android-removed: Removed MemorySegmentProxy not supported yet. pos + offset, // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. isReadOnly); } @Override public CharBuffer slice(int index, int length) { Objects.checkFromIndexSize(index, length, limit()); return new HeapCharBuffer(hb, -1, 0, length, length, // Android-removed: Removed MemorySegmentProxy not supported yet. index + offset, // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. isReadOnly); } public CharBuffer duplicate() { return new HeapCharBuffer(hb, this.markValue(), this.position(), this.limit(), this.capacity(), // Android-removed: Removed MemorySegmentProxy not supported yet. offset, // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. isReadOnly); } public CharBuffer asReadOnlyBuffer() { // Android-removed: Removed MemorySegmentProxy not supported yet. // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. /* return new HeapCharBufferR(hb, this.markValue(), this.position(), this.limit(), this.capacity(), offset, segment); */ return new HeapCharBuffer(hb, this.markValue(), this.position(), this.limit(), this.capacity(), offset, true /* isReadOnly */); } // Android-changed: Make it private as no subclasses exist. private int ix(int i) { return i + offset; } @Override public char get() { return hb[ix(nextGetIndex())]; } @Override public char get(int i) { return hb[ix(checkIndex(i))]; } @Override char getUnchecked(int i) { return hb[ix(i)]; } @Override public CharBuffer get(char[] dst, int offset, int length) { checkScope(); Objects.checkFromIndexSize(offset, length, dst.length); int pos = position(); if (length > limit() - pos) throw new BufferUnderflowException(); System.arraycopy(hb, ix(pos), dst, offset, length); position(pos + length); return this; } @Override public CharBuffer get(int index, char[] dst, int offset, int length) { checkScope(); Objects.checkFromIndexSize(index, length, limit()); Objects.checkFromIndexSize(offset, length, dst.length); System.arraycopy(hb, ix(index), dst, offset, length); return this; } public boolean isDirect() { return false; } @Override public boolean isReadOnly() { // Android-changed: Merge the Read-only buffer class with this Read-Write buffer class. return isReadOnly; } @Override public CharBuffer put(char x) { // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); hb[ix(nextPutIndex())] = x; return this; } @Override public CharBuffer put(int i, char x) { // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); hb[ix(checkIndex(i))] = x; return this; } @Override public CharBuffer put(char[] src, int offset, int length) { // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); checkScope(); Objects.checkFromIndexSize(offset, length, src.length); int pos = position(); if (length > limit() - pos) throw new BufferOverflowException(); System.arraycopy(src, offset, hb, ix(pos), length); position(pos + length); return this; } @Override public CharBuffer put(CharBuffer src) { checkScope(); // Android-changed: Speed-up this operation if the src is a heap or direct buffer. // super.put(src); if (src == this) { throw createSameBufferException(); } // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); if (src instanceof HeapCharBuffer sb) { int n = sb.remaining(); if (n > remaining()) throw new BufferOverflowException(); System.arraycopy(sb.hb, sb.ix(sb.position()), hb, ix(position()), n); sb.position(sb.position() + n); position(position() + n); } else if (src.isDirect()) { int n = src.remaining(); if (n > remaining()) throw new BufferOverflowException(); src.get(hb, ix(position()), n); position(position() + n); } else { super.put(src); } return this; } @Override public CharBuffer put(int index, CharBuffer src, int offset, int length) { checkScope(); super.put(index, src, offset, length); return this; } @Override public CharBuffer put(int index, char[] src, int offset, int length) { checkScope(); Objects.checkFromIndexSize(index, length, limit()); Objects.checkFromIndexSize(offset, length, src.length); // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); System.arraycopy(src, offset, hb, ix(index), length); return this; } @Override public CharBuffer put(String src, int start, int end) { checkScope(); int length = end - start; Objects.checkFromIndexSize(start, length, src.length()); // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); int pos = position(); int lim = limit(); int rem = (pos <= lim) ? lim - pos : 0; if (length > rem) throw new BufferOverflowException(); src.getChars(start, end, hb, ix(pos)); position(pos + length); return this; } @Override public CharBuffer compact() { // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. throwIfReadOnly(); int pos = position(); int lim = limit(); assert (pos <= lim); int rem = (pos <= lim ? lim - pos : 0); System.arraycopy(hb, ix(pos), hb, ix(0), rem); position(rem); limit(capacity()); discardMark(); return this; } String toString(int start, int end) { // package-private try { return new String(hb, start + offset, end - start); } catch (StringIndexOutOfBoundsException x) { throw new IndexOutOfBoundsException(); } } // --- Methods to support CharSequence --- public CharBuffer subSequence(int start, int end) { 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); } public ByteOrder order() { return ByteOrder.nativeOrder(); } ByteOrder charRegionOrder() { return order(); } // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. private void throwIfReadOnly() { if (isReadOnly) { throw new ReadOnlyBufferException(); } } }