From f06a83c0b2f7761510836194a6c9a8a72000937c Mon Sep 17 00:00:00 2001 From: Matthias Klose Date: Sat, 4 Aug 2007 10:53:49 +0000 Subject: Import GNU Classpath (libgcj-import-20070727). libjava/ 2007-08-04 Matthias Klose Import GNU Classpath (libgcj-import-20070727). * Regenerate class and header files. * Regenerate auto* files. * include/jvm.h: * jni-libjvm.cc (Jv_JNI_InvokeFunctions): Rename type. * jni.cc (_Jv_JNIFunctions, _Jv_JNI_InvokeFunctions): Likewise. * jni.cc (_Jv_JNI_CallAnyMethodA, _Jv_JNI_CallAnyVoidMethodA, _Jv_JNI_CallMethodA, _Jv_JNI_CallVoidMethodA, _Jv_JNI_CallStaticMethodA, _Jv_JNI_CallStaticVoidMethodA, _Jv_JNI_NewObjectA, _Jv_JNI_SetPrimitiveArrayRegion): Constify jvalue parameter. * java/lang/reflect/natMethod.cc (_Jv_CallAnyMethodA): Likewise. * java/lang/VMFloat.java (toString, parseFloat): New. * gnu/awt/xlib/XToolkit.java (setAlwaysOnTop, isModalityTypeSupported, isModalExclusionTypeSupported): New (stub only). * gnu/awt/xlib/XCanvasPeer.java (requestFocus): Likewise. * gnu/awt/xlib/XFramePeer.java (updateMinimumSize, updateIconImages, updateFocusableWindowState, setModalBlocked, getBoundsPrivate, setAlwaysOnTop): Likewise. * gnu/awt/xlib/XFontPeer.java (canDisplay): Update signature. * scripts/makemake.tcl: Ignore gnu/javax/sound/sampled/gstreamer, ignore javax.sound.sampled.spi.MixerProvider, ignore .in files. * HACKING: Mention --enable-gstreamer-peer, removal of generated files. libjava/classpath/ 2007-08-04 Matthias Klose * java/util/EnumMap.java (clone): Add cast. From-SVN: r127204 --- libjava/classpath/java/nio/Buffer.java | 61 ++++++ libjava/classpath/java/nio/CharBuffer.java | 15 +- libjava/classpath/java/nio/CharSequenceBuffer.java | 208 +++++++++++++++++++++ libjava/classpath/java/nio/CharViewBufferImpl.java | 2 +- .../classpath/java/nio/DoubleViewBufferImpl.java | 2 +- .../classpath/java/nio/FloatViewBufferImpl.java | 2 +- libjava/classpath/java/nio/IntViewBufferImpl.java | 2 +- libjava/classpath/java/nio/LongViewBufferImpl.java | 2 +- .../classpath/java/nio/ShortViewBufferImpl.java | 2 +- 9 files changed, 276 insertions(+), 20 deletions(-) create mode 100644 libjava/classpath/java/nio/CharSequenceBuffer.java (limited to 'libjava/classpath/java/nio') diff --git a/libjava/classpath/java/nio/Buffer.java b/libjava/classpath/java/nio/Buffer.java index 2c7e00d..c2569ee 100644 --- a/libjava/classpath/java/nio/Buffer.java +++ b/libjava/classpath/java/nio/Buffer.java @@ -358,4 +358,65 @@ public abstract class Buffer (arraylength < length + offset)) throw new IndexOutOfBoundsException (); } + + /** + * Returns the backing array of this buffer, if this buffer has one. + * Modification to the array are directly visible in this buffer and vice + * versa. + * + *

+ * If this is a read-only buffer, then a {@link ReadOnlyBufferException} is + * thrown because exposing the array would allow to circumvent the read-only + * property. If this buffer doesn't have an array, then an + * {@link UnsupportedOperationException} is thrown. Applications should check + * if this buffer supports a backing array by calling {@link #hasArray} + * first.

+ * + * @return the backing array of this buffer + * + * @throws ReadOnlyBufferException when this buffer is read only + * @throws UnsupportedOperationException when this buffer does not provide + * a backing array + * + * @since 1.6 + */ + public abstract Object array(); + + /** + * Returns true if this buffer can provide a backing array, + * false otherwise. When true, application code + * can call {@link #array()} to access this backing array. + * + * @return true if this buffer can provide a backing array, + * false otherwise + * + * @since 1.6 + */ + public abstract boolean hasArray(); + + /** + * For buffers that are backed by a Java array, this returns the offset + * into that array at which the buffer content starts. + * + * @return the offset into the backing array at which the buffer content + * starts + * @throws ReadOnlyBufferException when this buffer is read only + * @throws UnsupportedOperationException when this buffer does not provide + * a backing array + * + * @since 1.6 + */ + public abstract int arrayOffset(); + + /** + * Returns true when this buffer is direct, false + * otherwise. A direct buffer is usually backed by a raw memory area instead + * of a Java array. + * + * @return true when this buffer is direct, false + * otherwise + * + * @since 1.6 + */ + public abstract boolean isDirect(); } diff --git a/libjava/classpath/java/nio/CharBuffer.java b/libjava/classpath/java/nio/CharBuffer.java index 34f429f..2feada4 100644 --- a/libjava/classpath/java/nio/CharBuffer.java +++ b/libjava/classpath/java/nio/CharBuffer.java @@ -107,20 +107,7 @@ public abstract class CharBuffer extends Buffer */ public static final CharBuffer wrap(CharSequence seq, int start, int end) { - // FIXME: implement better handling of java.lang.String. - // Probably share data with String via reflection. - - int len = end - start; - - if( len < 0 ) - throw new IndexOutOfBoundsException(); - - char[] buffer = new char[len]; - - for (int i = 0; i < len; i++) - buffer[i] = seq.charAt(i + start); - - return wrap(buffer, 0, len).asReadOnlyBuffer(); + return new CharSequenceBuffer(seq, start, end); } /** diff --git a/libjava/classpath/java/nio/CharSequenceBuffer.java b/libjava/classpath/java/nio/CharSequenceBuffer.java new file mode 100644 index 0000000..26aad1c --- /dev/null +++ b/libjava/classpath/java/nio/CharSequenceBuffer.java @@ -0,0 +1,208 @@ +/* CharBuffer.java -- + Copyright (C) 2007 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.nio; + +/** + * A CharBuffer that wraps a {@link CharSequence}. + */ +final class CharSequenceBuffer + extends CharBuffer +{ + + /** + * The wrapped char sequence. + */ + private CharSequence charSequence; + + /** + * Creates a new CharSequenceBuffer. + * + * @param charSeq the CharSequence to wrap + * @param capacity the capacity + * @param limit the limit + * @param position the position + * @param mark the mark + * @param offs the offset + */ + CharSequenceBuffer(CharSequence charSeq, int capacity, int limit, + int position, int mark, int offs) + { + super(capacity, limit, position, mark); + charSequence = charSeq; + array_offset = offs; + } + + /** + * Creates a new instance of CharSequenceBuffer, wrapping the specified + * {@link CharSequence}. + * + * @param charSeq the char sequence to wrap + * @param start the start index in the char sequence + * @param end the end index in the char sequence + */ + CharSequenceBuffer(CharSequence charSeq, int start, int end) + { + this(charSeq, charSeq.length(), end, start, -1, 0); + } + + /** + * Returns a read-only view of this buffer. + */ + public CharBuffer asReadOnlyBuffer() + { + return duplicate(); + } + + /** + * This buffer class is not writable by definition and thus throws + * a ReadOnlyBufferException here. + */ + public CharBuffer compact() + { + throw new ReadOnlyBufferException(); + } + + /** + * Returns a duplicate of this buffer. + * + * @return a duplicate of this buffer + */ + public CharBuffer duplicate() + { + return new CharSequenceBuffer(charSequence, cap, limit, pos, mark, 0); + } + + /** + * Returns the character at the current position. + * + * @return the character at the current position + */ + public char get() + { + if (pos >= limit) + throw new BufferUnderflowException(); + + return charSequence.charAt(array_offset + pos++); + } + + /** + * Returns the character at the specified position. + * + * @return the character at the specified position + */ + public char get(int index) + { + if (index < 0 || index >= limit) + throw new IndexOutOfBoundsException(); + + return charSequence.charAt(array_offset + index); + } + + /** + * Cannot be direct, return false here. + * + * @return false + */ + public boolean isDirect() + { + return false; + } + + /** + * Returns the byte order of this buffer. This is always the native byte + * order. + * + * @return the byte order of this buffer + */ + public ByteOrder order() + { + return ByteOrder.nativeOrder(); + } + + /** + * This buffer class is not writable by definition and thus throws + * a ReadOnlyBufferException here. + */ + public CharBuffer put(char b) + { + throw new ReadOnlyBufferException(); + } + + /** + * This buffer class is not writable by definition and thus throws + * a ReadOnlyBufferException here. + */ + public CharBuffer put(int index, char b) + { + throw new ReadOnlyBufferException(); + } + + /** + * Returns a slice of this buffer, exposing the current position and limit. + */ + public CharBuffer slice() + { + int newCapacity = limit - pos; + return new CharSequenceBuffer(charSequence, newCapacity, newCapacity, 0, + -1, pos); + } + + /** + * Returns a sub sequence from the specified start index and with the + * specified length. + * + * @param start the start index + * @param length the length of the sub sequence + */ + public CharSequence subSequence(int start, int length) + { + int begin = array_offset + start + pos; + return charSequence.subSequence(begin, begin + length); + } + + /** + * This kind of CharBuffer is read-only, so we return true + * here. + */ + public boolean isReadOnly() + { + return true; + } + +} diff --git a/libjava/classpath/java/nio/CharViewBufferImpl.java b/libjava/classpath/java/nio/CharViewBufferImpl.java index 3198315..33bbac8 100644 --- a/libjava/classpath/java/nio/CharViewBufferImpl.java +++ b/libjava/classpath/java/nio/CharViewBufferImpl.java @@ -133,7 +133,7 @@ class CharViewBufferImpl extends CharBuffer public CharBuffer slice () { // Create a sliced copy of this object that shares its content. - return new CharViewBufferImpl (bb, (position () >> 1) + offset, + return new CharViewBufferImpl (bb, (position () << 1) + offset, remaining (), remaining (), 0, -1, isReadOnly (), endian); } diff --git a/libjava/classpath/java/nio/DoubleViewBufferImpl.java b/libjava/classpath/java/nio/DoubleViewBufferImpl.java index e860f2f..d139915 100644 --- a/libjava/classpath/java/nio/DoubleViewBufferImpl.java +++ b/libjava/classpath/java/nio/DoubleViewBufferImpl.java @@ -130,7 +130,7 @@ final class DoubleViewBufferImpl extends DoubleBuffer public DoubleBuffer slice () { - return new DoubleViewBufferImpl (bb, (position () >> 3) + offset, + return new DoubleViewBufferImpl (bb, (position () << 3) + offset, remaining(), remaining(), 0, -1, readOnly, endian); } diff --git a/libjava/classpath/java/nio/FloatViewBufferImpl.java b/libjava/classpath/java/nio/FloatViewBufferImpl.java index 55770d5..8bb342d 100644 --- a/libjava/classpath/java/nio/FloatViewBufferImpl.java +++ b/libjava/classpath/java/nio/FloatViewBufferImpl.java @@ -131,7 +131,7 @@ final class FloatViewBufferImpl extends FloatBuffer public FloatBuffer slice () { // Create a sliced copy of this object that shares its content. - return new FloatViewBufferImpl (bb, (position () >> 2) + offset, + return new FloatViewBufferImpl (bb, (position () << 2) + offset, remaining(), remaining(), 0, -1, readOnly, endian); } diff --git a/libjava/classpath/java/nio/IntViewBufferImpl.java b/libjava/classpath/java/nio/IntViewBufferImpl.java index d0b0057..cd8307f 100644 --- a/libjava/classpath/java/nio/IntViewBufferImpl.java +++ b/libjava/classpath/java/nio/IntViewBufferImpl.java @@ -131,7 +131,7 @@ final class IntViewBufferImpl extends IntBuffer public IntBuffer slice () { // Create a sliced copy of this object that shares its content. - return new IntViewBufferImpl (bb, (position () >> 2) + offset, + return new IntViewBufferImpl (bb, (position () << 2) + offset, remaining(), remaining(), 0, -1, readOnly, endian); } diff --git a/libjava/classpath/java/nio/LongViewBufferImpl.java b/libjava/classpath/java/nio/LongViewBufferImpl.java index 9c3452a..eefbcbd 100644 --- a/libjava/classpath/java/nio/LongViewBufferImpl.java +++ b/libjava/classpath/java/nio/LongViewBufferImpl.java @@ -131,7 +131,7 @@ final class LongViewBufferImpl extends LongBuffer public LongBuffer slice () { // Create a sliced copy of this object that shares its content. - return new LongViewBufferImpl (bb, (position () >> 3) + offset, + return new LongViewBufferImpl (bb, (position () << 3) + offset, remaining(), remaining(), 0, -1, readOnly, endian); } diff --git a/libjava/classpath/java/nio/ShortViewBufferImpl.java b/libjava/classpath/java/nio/ShortViewBufferImpl.java index cdd5595..df713361 100644 --- a/libjava/classpath/java/nio/ShortViewBufferImpl.java +++ b/libjava/classpath/java/nio/ShortViewBufferImpl.java @@ -131,7 +131,7 @@ final class ShortViewBufferImpl extends ShortBuffer public ShortBuffer slice () { // Create a sliced copy of this object that shares its content. - return new ShortViewBufferImpl (bb, (position () >> 1) + offset, + return new ShortViewBufferImpl (bb, (position () << 1) + offset, remaining(), remaining(), 0, -1, readOnly, endian); } -- cgit v1.1