| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.iapi.services.classfile.CONSTANT_Double_info |
| 4 | |
| 5 | Copyright 2000, 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.iapi.services.classfile; |
| 22 | |
| 23 | import org.apache.derby.iapi.services.classfile.VMDescriptor; |
| 24 | |
| 25 | import java.io.IOException; |
| 26 | |
| 27 | /** Double Constant - page 97 - Section 4.4.5 */ |
| 28 | final class CONSTANT_Double_info extends ConstantPoolEntry { |
| 29 | private final double value; |
| 30 | |
| 31 | CONSTANT_Double_info(double value) { |
| 32 | super(VMDescriptor.CONSTANT_Double); |
| 33 | doubleSlot = true; //See page 98. |
| 34 | this.value = value; |
| 35 | } |
| 36 | |
| 37 | public int hashCode() { |
| 38 | return (int) value; |
| 39 | } |
| 40 | |
| 41 | int classFileSize() { |
| 42 | // 1 (tag) + 8 (double length) |
| 43 | return 1 + 8; |
| 44 | } |
| 45 | void put(ClassFormatOutput out) throws IOException { |
| 46 | super.put(out); |
| 47 | out.writeDouble(value); |
| 48 | } |
| 49 | |
| 50 | public boolean equals(Object other) { |
| 51 | |
| 52 | // check it is the right type |
| 53 | if (other instanceof CONSTANT_Double_info) { |
| 54 | |
| 55 | return value == ((CONSTANT_Double_info) other).value; |
| 56 | } |
| 57 | |
| 58 | return false; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | |