| 1 | /******************************************************************************* |
|---|---|
| 2 | * Copyright (c) 2000, 2013 IBM Corporation and others. |
| 3 | * |
| 4 | * This program and the accompanying materials |
| 5 | * are made available under the terms of the Eclipse Public License 2.0 |
| 6 | * which accompanies this distribution, and is available at |
| 7 | * https://www.eclipse.org/legal/epl-2.0/ |
| 8 | * |
| 9 | * SPDX-License-Identifier: EPL-2.0 |
| 10 | * |
| 11 | * Contributors: |
| 12 | * IBM Corporation - initial API and implementation |
| 13 | *******************************************************************************/ |
| 14 | |
| 15 | package org.eclipse.jdt.core.dom; |
| 16 | |
| 17 | import java.util.ArrayList; |
| 18 | import java.util.List; |
| 19 | |
| 20 | /** |
| 21 | * Boolean literal node. |
| 22 | * |
| 23 | * <pre> |
| 24 | * BooleanLiteral: |
| 25 | * <b>true</b> |
| 26 | * <b>false</b> |
| 27 | * </pre> |
| 28 | * |
| 29 | * @since 2.0 |
| 30 | * @noinstantiate This class is not intended to be instantiated by clients. |
| 31 | */ |
| 32 | @SuppressWarnings("rawtypes") |
| 33 | public class BooleanLiteral extends Expression { |
| 34 | |
| 35 | /** |
| 36 | * The "booleanValue" structural property of this node type (type: {@link Boolean}). |
| 37 | * @since 3.0 |
| 38 | */ |
| 39 | public static final SimplePropertyDescriptor BOOLEAN_VALUE_PROPERTY = |
| 40 | new SimplePropertyDescriptor(BooleanLiteral.class, "booleanValue", boolean.class, MANDATORY); //$NON-NLS-1$ |
| 41 | |
| 42 | /** |
| 43 | * A list of property descriptors (element type: |
| 44 | * {@link StructuralPropertyDescriptor}), |
| 45 | * or null if uninitialized. |
| 46 | */ |
| 47 | private static final List PROPERTY_DESCRIPTORS; |
| 48 | |
| 49 | static { |
| 50 | List properyList = new ArrayList(2); |
| 51 | createPropertyList(BooleanLiteral.class, properyList); |
| 52 | addProperty(BOOLEAN_VALUE_PROPERTY, properyList); |
| 53 | PROPERTY_DESCRIPTORS = reapPropertyList(properyList); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Returns a list of structural property descriptors for this node type. |
| 58 | * Clients must not modify the result. |
| 59 | * |
| 60 | * @param apiLevel the API level; one of the |
| 61 | * <code>AST.JLS*</code> constants |
| 62 | |
| 63 | * @return a list of property descriptors (element type: |
| 64 | * {@link StructuralPropertyDescriptor}) |
| 65 | * @since 3.0 |
| 66 | */ |
| 67 | public static List propertyDescriptors(int apiLevel) { |
| 68 | return PROPERTY_DESCRIPTORS; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * The boolean; defaults to the literal for <code>false</code>. |
| 73 | */ |
| 74 | private boolean value = false; |
| 75 | |
| 76 | /** |
| 77 | * Creates a new unparented boolean literal node owned by the given AST. |
| 78 | * <p> |
| 79 | * N.B. This constructor is package-private. |
| 80 | * </p> |
| 81 | * |
| 82 | * @param ast the AST that is to own this node |
| 83 | */ |
| 84 | BooleanLiteral(AST ast) { |
| 85 | super(ast); |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | final List internalStructuralPropertiesForType(int apiLevel) { |
| 90 | return propertyDescriptors(apiLevel); |
| 91 | } |
| 92 | |
| 93 | @Override |
| 94 | final boolean internalGetSetBooleanProperty(SimplePropertyDescriptor property, boolean get, boolean newValue) { |
| 95 | if (property == BOOLEAN_VALUE_PROPERTY) { |
| 96 | if (get) { |
| 97 | return booleanValue(); |
| 98 | } else { |
| 99 | setBooleanValue(newValue); |
| 100 | return false; |
| 101 | } |
| 102 | } |
| 103 | // allow default implementation to flag the error |
| 104 | return super.internalGetSetBooleanProperty(property, get, newValue); |
| 105 | } |
| 106 | |
| 107 | @Override |
| 108 | final int getNodeType0() { |
| 109 | return BOOLEAN_LITERAL; |
| 110 | } |
| 111 | |
| 112 | @Override |
| 113 | ASTNode clone0(AST target) { |
| 114 | BooleanLiteral result = new BooleanLiteral(target); |
| 115 | result.setSourceRange(getStartPosition(), getLength()); |
| 116 | result.setBooleanValue(booleanValue()); |
| 117 | return result; |
| 118 | } |
| 119 | |
| 120 | @Override |
| 121 | final boolean subtreeMatch0(ASTMatcher matcher, Object other) { |
| 122 | // dispatch to correct overloaded match method |
| 123 | return matcher.match(this, other); |
| 124 | } |
| 125 | |
| 126 | @Override |
| 127 | void accept0(ASTVisitor visitor) { |
| 128 | visitor.visit(this); |
| 129 | visitor.endVisit(this); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Returns the boolean value of this boolean literal node. |
| 134 | * |
| 135 | * @return <code>true</code> for the boolean literal spelled |
| 136 | * <code>"true"</code>, and <code>false</code> for the boolean literal |
| 137 | * spelled <code>"false"</code>. |
| 138 | */ |
| 139 | public boolean booleanValue() { |
| 140 | return this.value; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Sets the boolean value of this boolean literal node. |
| 145 | * |
| 146 | * @param value <code>true</code> for the boolean literal spelled |
| 147 | * <code>"true"</code>, and <code>false</code> for the boolean literal |
| 148 | * spelled <code>"false"</code>. |
| 149 | */ |
| 150 | public void setBooleanValue(boolean value) { |
| 151 | preValueChange(BOOLEAN_VALUE_PROPERTY); |
| 152 | this.value = value; |
| 153 | postValueChange(BOOLEAN_VALUE_PROPERTY); |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | int memSize() { |
| 158 | return BASE_NODE_SIZE + 1 * 4; |
| 159 | } |
| 160 | |
| 161 | @Override |
| 162 | int treeSize() { |
| 163 | return memSize(); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 |
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