stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

5071718: (bf) Add ByteBuffer.slice(int offset, int length)

Browse Source 
Reviewed-by: alanb, bchristi, darcy, rriggs
This commit is contained in:
Brian Burkhalter 2019-02-28 12:05:59 -08:00
parent 8f84ae5684
commit fad1f059b0
17 changed files with 367 additions and 77 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/java.base/share/classes/java/nio/Buffer.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2019, 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
@ -134,8 +134,9 @@ import java.util.Spliterator;
* it already contains: It leaves the limit unchanged and sets the position
* to zero. </p></li>
*
* <li><p> {@link #slice} creates a subsequence of a buffer: It leaves the
* limit and the position unchanged. </p></li>
* <li><p> The {@link #slice} and {@link #slice(int,int) slice(index,length)}
* methods create a subsequence of a buffer: They leave the limit and the
* position unchanged. </p></li>
*
* <li><p> {@link #duplicate} creates a shallow copy of a buffer: It leaves
* the limit and the position unchanged. </p></li>
@ -599,6 +600,39 @@ public abstract class Buffer {
*/
public abstract Buffer slice();
/**
* Creates a new buffer whose content is a shared subsequence of
* this buffer's content.
*
* <p> The content of the new buffer will start at position {@code index}
* in this buffer, and will contain {@code length} elements. Changes to
* this buffer's content will be visible in the new buffer, and vice versa;
* the two buffers' position, limit, and mark values will be independent.
*
* <p> The new buffer's position will be zero, its capacity and its limit
* will be {@code length}, its mark will be undefined. The new buffer will
* be direct if, and only if, this buffer is direct, and it will be
* read-only if, and only if, this buffer is read-only. </p>
*
* @param index
* The position in this buffer at which the content of the new
* buffer will start; must be non-negative and no larger than
* {@link #limit() limit()}
*
* @param length
* The number of elements the new buffer will contain; must be
* non-negative and no larger than {@code limit() - index}
*
* @return The new buffer
*
* @throws IndexOutOfBoundsException
* If {@code index} is negative or greater than {@code limit()},
* {@code length} is negative, or {@code length > limit() - index}
*
* @since 13
*/
public abstract Buffer slice(int index, int length);
/**
* Creates a new buffer that shares this buffer's content.
*

16
src/java.base/share/classes/java/nio/ByteBufferAs-X-Buffer.java.template
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2019, 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
@ -27,9 +27,9 @@
package java.nio;
import java.util.Objects;
import jdk.internal.misc.Unsafe;
class ByteBufferAs$Type$Buffer$RW$$BO$ // package-private
extends {#if[ro]?ByteBufferAs}$Type$Buffer{#if[ro]?$BO$}
{
@ -85,6 +85,18 @@ class ByteBufferAs$Type$Buffer$RW$$BO$ // package-private
return new ByteBufferAs$Type$Buffer$RW$$BO$(bb, -1, 0, rem, rem, addr);
}
@Override
public $Type$Buffer slice(int index, int length) {
Objects.checkIndex(index, limit() + 1);
Objects.checkIndex(length, limit() - index + 1);
return new ByteBufferAs$Type$Buffer$RW$$BO$(bb,
-1,
0,
length,
length,
byteOffset(index));
}
public $Type$Buffer duplicate() {
return new ByteBufferAs$Type$Buffer$RW$$BO$(bb,
this.markValue(),

17
src/java.base/share/classes/java/nio/Direct-X-Buffer.java.template
View File

@ -218,14 +218,17 @@ class Direct$Type$Buffer$RW$$BO$
return new Direct$Type$Buffer$RW$$BO$(this, -1, 0, rem, rem, off);
}
#if[byte]
public $Type$Buffer slice(int pos, int lim) {
assert (pos >= 0);
assert (pos <= lim);
int rem = lim - pos;
return new Direct$Type$Buffer$RW$$BO$(this, -1, 0, rem, rem, pos);
@Override
public $Type$Buffer slice(int index, int length) {
Objects.checkIndex(index, limit() + 1);
Objects.checkIndex(length, limit() - index + 1);
return new Direct$Type$Buffer$RW$$BO$(this,
-1,
0,
length,
length,
index);
}
#end[byte]
public $Type$Buffer duplicate() {
return new Direct$Type$Buffer$RW$$BO$(this,

20
src/java.base/share/classes/java/nio/Heap-X-Buffer.java.template
View File

@ -27,6 +27,8 @@
package java.nio;
import java.util.Objects;
/**
#if[rw]
* A read/write Heap$Type$Buffer.
@ -38,8 +40,6 @@ package java.nio;
#end[rw]
*/
import java.util.Objects;
class Heap$Type$Buffer$RW$
extends {#if[ro]?Heap}$Type$Buffer
{
@ -112,19 +112,17 @@ class Heap$Type$Buffer$RW$
this.position() + offset);
}
#if[byte]
$Type$Buffer slice(int pos, int lim) {
assert (pos >= 0);
assert (pos <= lim);
int rem = lim - pos;
@Override
public $Type$Buffer slice(int index, int length) {
Objects.checkIndex(index, limit() + 1);
Objects.checkIndex(length, limit() - index + 1);
return new Heap$Type$Buffer$RW$(hb,
-1,
0,
rem,
rem,
pos + offset);
length,
length,
index + offset);
}
#end[byte]
public $Type$Buffer duplicate() {
return new Heap$Type$Buffer$RW$(hb,

15
src/java.base/share/classes/java/nio/StringCharBuffer.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2019, 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
@ -25,6 +25,7 @@
package java.nio;
import java.util.Objects;
// ## If the sequence is a string, use reflection to share its array
@ -51,6 +52,18 @@ class StringCharBuffer // package-private
offset + this.position());
}
@Override
public CharBuffer slice(int index, int length) {
Objects.checkIndex(index, limit() + 1);
Objects.checkIndex(length, limit() - index + 1);
return new StringCharBuffer(str,
-1,
0,
length,
length,
offset + index);
}
private StringCharBuffer(CharSequence s,
int mark,
int pos,

44
src/java.base/share/classes/java/nio/X-Buffer.java.template
View File

@ -546,6 +546,46 @@ public abstract class $Type$Buffer
@Override
public abstract $Type$Buffer slice();
/**
* Creates a new $type$ buffer whose content is a shared subsequence of
* this buffer's content.
*
* <p> The content of the new buffer will start at position {@code index}
* in this buffer, and will contain {@code length} elements. Changes to
* this buffer's content will be visible in the new buffer, and vice versa;
* the two buffers' position, limit, and mark values will be independent.
*
* <p> The new buffer's position will be zero, its capacity and its limit
* will be {@code length}, its mark will be undefined, and its byte order
* will be
#if[byte]
* {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.
#else[byte]
* identical to that of this buffer.
#end[byte]
* The new buffer will be direct if, and only if, this buffer is direct,
* and it will be read-only if, and only if, this buffer is read-only. </p>
*
* @param index
* The position in this buffer at which the content of the new
* buffer will start; must be non-negative and no larger than
* {@link #limit() limit()}
*
* @param length
* The number of elements the new buffer will contain; must be
* non-negative and no larger than {@code limit() - index}
*
* @return The new buffer
*
* @throws IndexOutOfBoundsException
* If {@code index} is negative or greater than {@code limit()},
* {@code length} is negative, or {@code length > limit() - index}
*
* @since 13
*/
@Override
public abstract $Type$Buffer slice(int index, int length);
/**
* Creates a new $type$ buffer that shares this buffer's content.
*
@ -1950,11 +1990,9 @@ public abstract class $Type$Buffer
aligned_pos = aligned_lim = pos;
}
return slice(aligned_pos, aligned_lim);
return slice(aligned_pos, aligned_lim - aligned_pos);
}
abstract ByteBuffer slice(int pos, int lim);
// #BIN
//
// Binary-data access methods for short, char, int, long, float,

21
test/jdk/java/nio/Buffer/Basic-X.java.template
View File

@ -648,7 +648,7 @@ public class Basic$Type$
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, ($type$[])null, 0, 42));
@ -668,6 +668,11 @@ public class Basic$Type$
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class Basic$Type$
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
$Type$Buffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
$Type$Buffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);
#if[byte]
// Views

4
test/jdk/java/nio/Buffer/Basic.java
View File

@ -25,8 +25,8 @@
* @summary Unit test for buffers
* @bug 4413135 4414911 4416536 4416562 4418782 4471053 4472779 4490253 4523725
* 4526177 4463011 4660660 4661219 4663521 4782970 4804304 4938424 5029431
* 6231529 6221101 6234263 6535542 6591971 6593946 6795561 7190219 7199551
* 8065556 8149469
* 5071718 6231529 6221101 6234263 6535542 6591971 6593946 6795561 7190219
* 7199551 8065556 8149469
* @modules java.base/java.nio:open
* java.base/jdk.internal.misc
* @author Mark Reinhold

21
test/jdk/java/nio/Buffer/BasicByte.java
View File

@ -648,7 +648,7 @@ public class BasicByte
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (byte[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicByte
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicByte
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
ByteBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
ByteBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);
// Views

21
test/jdk/java/nio/Buffer/BasicChar.java
View File

@ -648,7 +648,7 @@ public class BasicChar
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (char[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicChar
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicChar
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
CharBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
CharBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);

21
test/jdk/java/nio/Buffer/BasicDouble.java
View File

@ -648,7 +648,7 @@ public class BasicDouble
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (double[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicDouble
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicDouble
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
DoubleBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
DoubleBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);

21
test/jdk/java/nio/Buffer/BasicFloat.java
View File

@ -648,7 +648,7 @@ public class BasicFloat
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (float[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicFloat
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicFloat
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
FloatBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
FloatBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);

21
test/jdk/java/nio/Buffer/BasicInt.java
View File

@ -648,7 +648,7 @@ public class BasicInt
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (int[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicInt
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicInt
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
IntBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
IntBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);

21
test/jdk/java/nio/Buffer/BasicLong.java
View File

@ -648,7 +648,7 @@ public class BasicLong
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (long[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicLong
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicLong
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
LongBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
LongBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);

21
test/jdk/java/nio/Buffer/BasicShort.java
View File

@ -648,7 +648,7 @@ public class BasicShort
}
}
// Exceptions in absolute bulk operations
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (short[])null, 0, 42));
@ -668,6 +668,11 @@ public class BasicShort
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
@ -832,6 +837,20 @@ public class BasicShort
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
ShortBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
ShortBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);

12
test/jdk/java/nio/Buffer/ByteBufferViews.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2019, 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
@ -64,6 +64,8 @@ public class ByteBufferViews {
size -> ByteBuffer.allocate(size).position(8).slice()),
Map.entry("ByteBuffer.allocate(size).position(8).slice().duplicate()",
size -> ByteBuffer.allocate(size).position(8).slice().duplicate()),
Map.entry("ByteBuffer.allocate(size).slice(8,size-8)",
size -> ByteBuffer.allocate(size).slice(8,size-8)),
// Unaligned
Map.entry("ByteBuffer.allocate(size).position(1)",
size -> ByteBuffer.allocate(size).position(1)),
@ -71,6 +73,8 @@ public class ByteBufferViews {
size -> ByteBuffer.allocate(size).position(1).slice()),
Map.entry("ByteBuffer.allocate(size).position(1).slice().duplicate()",
size -> ByteBuffer.allocate(size).position(1).slice().duplicate()),
Map.entry("ByteBuffer.allocate(size).slice(1,size-1)",
size -> ByteBuffer.allocate(size).slice(1,size-1)),
// Off-heap
Map.entry("ByteBuffer.allocateDirect(size)",
@ -82,13 +86,17 @@ public class ByteBufferViews {
size -> ByteBuffer.allocateDirect(size).position(8).slice()),
Map.entry("ByteBuffer.allocateDirect(size).position(8).slice().duplicate()",
size -> ByteBuffer.allocateDirect(size).position(8).slice().duplicate()),
Map.entry("ByteBuffer.allocateDirect(size).slice(8,size-8)",
size -> ByteBuffer.allocateDirect(size).slice(8,size-8)),
// Unaligned
Map.entry("ByteBuffer.allocateDirect(size).position(1)",
size -> ByteBuffer.allocateDirect(size).position(1)),
Map.entry("ByteBuffer.allocateDirect(size).position(1).slice()",
size -> ByteBuffer.allocateDirect(size).position(1).slice()),
Map.entry("ByteBuffer.allocateDirect(size).position(1).slice().duplicate()",
size -> ByteBuffer.allocateDirect(size).position(1).slice().duplicate())
size -> ByteBuffer.allocateDirect(size).position(1).slice().duplicate()),
Map.entry("ByteBuffer.allocateDirect(size).slice(1,size-1)",
size -> ByteBuffer.allocateDirect(size).slice(1,size-1))
);
// List of buffer byte order functions

108
test/jdk/java/nio/Buffer/StringCharBufferSliceTest.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2019, 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
@ -22,11 +22,14 @@
*/
/* @test
* @bug 4997655 7000913
* @bug 4997655 5071718 7000913
* @summary (bf) CharBuffer.slice() on wrapped CharSequence results in wrong position
*/
import java.nio.*;
import java.nio.CharBuffer;
import java.nio.InvalidMarkException;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
public class StringCharBufferSliceTest {
public static void main( String[] args) throws Exception {
@ -40,85 +43,114 @@ public class StringCharBufferSliceTest {
CharBuffer buff = CharBuffer.wrap(in);
test(buff, buff.slice());
test(buff, buff.slice(0, buff.remaining()));
System.out.println(
">>> StringCharBufferSliceTest-main: testing with new position.");
buff.position(2);
test(buff, buff.slice());
test(buff, buff.slice(2, buff.remaining()));
System.out.println(
">>> StringCharBufferSliceTest-main: testing with non zero initial position.");
buff = CharBuffer.wrap(in, 3, in.length());
test(buff, buff.slice());
test(buff, buff.slice(0, buff.remaining()));
System.out.println(
">>> StringCharBufferSliceTest-main: testing slice result with get()");
buff.position(4);
buff.limit(7);
CharBuffer slice = buff.slice();
for (int i = 0; i < 3; i++) {
if (slice.get() != buff.get()) {
throw new RuntimeException("Wrong characters in slice result.");
BiConsumer<CharBuffer,CharBuffer> bitest = (b, s) -> {
for (int i = 0; i < 3; i++) {
if (s.get() != b.get()) {
throw new RuntimeException
("Wrong characters in slice result.");
}
}
}
};
bitest.accept(buff, buff.slice());
buff.position(4);
bitest.accept(buff, buff.slice(4, 3));
System.out.println(
">>> StringCharBufferSliceTest-main: testing slice result with get(int)");
buff.position(4);
buff.limit(7);
slice = buff.slice();
for (int i = 0; i < 3; i++) {
if (slice.get(i) != buff.get(4 + i)) {
throw new RuntimeException("Wrong characters in slice result.");
bitest = (b, s) -> {
for (int i = 0; i < 3; i++) {
if (s.get(i) != b.get(4 + i)) {
throw new RuntimeException
("Wrong characters in slice result.");
}
}
}
};
bitest.accept(buff, buff.slice());
buff.position(4);
bitest.accept(buff, buff.slice(4, 3));
System.out.println(
">>> StringCharBufferSliceTest-main: testing slice with result of slice");
buff.position(0);
buff.limit(buff.capacity());
slice = buff.slice();
for (int i=0; i<4; i++) {
slice.position(i);
CharBuffer nextSlice = slice.slice();
if (nextSlice.position() != 0)
throw new RuntimeException("New buffer's position should be zero");
if (!nextSlice.equals(slice))
throw new RuntimeException("New buffer should be equal");
slice = nextSlice;
}
Consumer<CharBuffer> test = (s) -> {
for (int i=0; i<4; i++) {
s.position(i);
CharBuffer nextSlice = s.slice();
if (nextSlice.position() != 0)
throw new RuntimeException
("New buffer's position should be zero");
if (!nextSlice.equals(s))
throw new RuntimeException("New buffer should be equal");
s = nextSlice;
}
};
test.accept(buff.slice());
test.accept(buff.slice(0, buff.capacity()));
System.out.println(
">>> StringCharBufferSliceTest-main: testing toString.");
buff.position(4);
buff.limit(7);
slice = buff.slice();
if (!slice.toString().equals("tes")) {
throw new RuntimeException("bad toString() after slice(): " + slice.toString());
}
test = (s) -> {
if (!s.toString().equals("tes")) {
throw new RuntimeException
("bad toString() after slice(): " + s.toString());
}
};
test.accept(buff.slice());
test.accept(buff.slice(4, 3));
System.out.println(
">>> StringCharBufferSliceTest-main: testing subSequence.");
buff.position(4);
buff.limit(8);
slice = buff.slice();
CharSequence subSeq = slice.subSequence(1, 3);
if (subSeq.charAt(0) != 'e' || subSeq.charAt(1) != 's') {
throw new RuntimeException("bad subSequence() after slice(): '" + subSeq + "'");
}
test = (s) -> {
CharSequence subSeq = s.subSequence(1, 3);
if (subSeq.charAt(0) != 'e' || subSeq.charAt(1) != 's') {
throw new RuntimeException
("bad subSequence() after slice(): '" + subSeq + "'");
}
};
test.accept(buff.slice());
test.accept(buff.slice(4, 4));
System.out.println(
">>> StringCharBufferSliceTest-main: testing duplicate.");
buff.position(4);
buff.limit(8);
slice = buff.slice();
CharBuffer dupe = slice.duplicate();
if (dupe.charAt(0) != 't' || dupe.charAt(1) != 'e'
|| dupe.charAt(2) != 's' || dupe.charAt(3) != 't') {
throw new RuntimeException("bad duplicate() after slice(): '" + dupe + "'");
}
test = (s) -> {
CharBuffer dupe = s.duplicate();
if (dupe.charAt(0) != 't' || dupe.charAt(1) != 'e'
|| dupe.charAt(2) != 's' || dupe.charAt(3) != 't') {
throw new RuntimeException
("bad duplicate() after slice(): '" + dupe + "'");
}
};
test.accept(buff.slice());
test.accept(buff.slice(4, 4));
System.out.println(">>> StringCharBufferSliceTest-main: done!");
}