Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/javac/util/ByteBuffer.java
src/share/classes/com/sun/tools/javac/util/ByteBuffer.java
- changeset 1339
- 0e5899f09dab
- parent 581
- f2fdd52e4e87
- child 2525
- 2eb010b6cb22
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| 1338:ad2ca2a4ab5e | 1339:0e5899f09dab |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 5 * This code is free software; you can redistribute it and/or modify it |
| 6 * under the terms of the GNU General Public License version 2 only, as | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. Oracle designates this | 7 * published by the Free Software Foundation. Oracle designates this |
| 58 public ByteBuffer(int initialSize) { | 58 public ByteBuffer(int initialSize) { |
| 59 elems = new byte[initialSize]; | 59 elems = new byte[initialSize]; |
| 60 length = 0; | 60 length = 0; |
| 61 } | 61 } |
| 62 | 62 |
| 63 private void copy(int size) { | |
| 64 byte[] newelems = new byte[size]; | |
| 65 System.arraycopy(elems, 0, newelems, 0, elems.length); | |
| 66 elems = newelems; | |
| 67 } | |
| 68 | |
| 69 /** Append byte to this buffer. | 63 /** Append byte to this buffer. |
| 70 */ | 64 */ |
| 71 public void appendByte(int b) { | 65 public void appendByte(int b) { |
| 72 if (length >= elems.length) copy(elems.length * 2); | 66 elems = ArrayUtils.ensureCapacity(elems, length); |
| 73 elems[length++] = (byte)b; | 67 elems[length++] = (byte)b; |
| 74 } | 68 } |
| 75 | 69 |
| 76 /** Append `len' bytes from byte array, | 70 /** Append `len' bytes from byte array, |
| 77 * starting at given `start' offset. | 71 * starting at given `start' offset. |
| 78 */ | 72 */ |
| 79 public void appendBytes(byte[] bs, int start, int len) { | 73 public void appendBytes(byte[] bs, int start, int len) { |
| 80 while (length + len > elems.length) copy(elems.length * 2); | 74 elems = ArrayUtils.ensureCapacity(elems, length + len); |
| 81 System.arraycopy(bs, start, elems, length, len); | 75 System.arraycopy(bs, start, elems, length, len); |
| 82 length += len; | 76 length += len; |
| 83 } | 77 } |
| 84 | 78 |
| 85 /** Append all bytes from given byte array. | 79 /** Append all bytes from given byte array. |
| 89 } | 83 } |
| 90 | 84 |
| 91 /** Append a character as a two byte number. | 85 /** Append a character as a two byte number. |
| 92 */ | 86 */ |
| 93 public void appendChar(int x) { | 87 public void appendChar(int x) { |
| 94 while (length + 1 >= elems.length) copy(elems.length * 2); | 88 elems = ArrayUtils.ensureCapacity(elems, length + 1); |
| 95 elems[length ] = (byte)((x >> 8) & 0xFF); | 89 elems[length ] = (byte)((x >> 8) & 0xFF); |
| 96 elems[length+1] = (byte)((x ) & 0xFF); | 90 elems[length+1] = (byte)((x ) & 0xFF); |
| 97 length = length + 2; | 91 length = length + 2; |
| 98 } | 92 } |
| 99 | 93 |
| 100 /** Append an integer as a four byte number. | 94 /** Append an integer as a four byte number. |
| 101 */ | 95 */ |
| 102 public void appendInt(int x) { | 96 public void appendInt(int x) { |
| 103 while (length + 3 >= elems.length) copy(elems.length * 2); | 97 elems = ArrayUtils.ensureCapacity(elems, length + 3); |
| 104 elems[length ] = (byte)((x >> 24) & 0xFF); | 98 elems[length ] = (byte)((x >> 24) & 0xFF); |
| 105 elems[length+1] = (byte)((x >> 16) & 0xFF); | 99 elems[length+1] = (byte)((x >> 16) & 0xFF); |
| 106 elems[length+2] = (byte)((x >> 8) & 0xFF); | 100 elems[length+2] = (byte)((x >> 8) & 0xFF); |
| 107 elems[length+3] = (byte)((x ) & 0xFF); | 101 elems[length+3] = (byte)((x ) & 0xFF); |
| 108 length = length + 4; | 102 length = length + 4; |
