| 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 | import org.eclipse.jdt.core.compiler.InvalidInputException; |
| 21 | import org.eclipse.jdt.internal.compiler.parser.Scanner; |
| 22 | import org.eclipse.jdt.internal.compiler.parser.TerminalTokens; |
| 23 | |
| 24 | /** |
| 25 | * Number literal nodes. |
| 26 | * |
| 27 | * @since 2.0 |
| 28 | * @noinstantiate This class is not intended to be instantiated by clients. |
| 29 | */ |
| 30 | @SuppressWarnings("rawtypes") |
| 31 | public class NumberLiteral extends Expression { |
| 32 | |
| 33 | /** |
| 34 | * The "token" structural property of this node type (type: {@link String}). |
| 35 | * @since 3.0 |
| 36 | */ |
| 37 | public static final SimplePropertyDescriptor TOKEN_PROPERTY = |
| 38 | new SimplePropertyDescriptor(NumberLiteral.class, "token", String.class, MANDATORY); //$NON-NLS-1$ |
| 39 | |
| 40 | /** |
| 41 | * A list of property descriptors (element type: |
| 42 | * {@link StructuralPropertyDescriptor}), |
| 43 | * or null if uninitialized. |
| 44 | */ |
| 45 | private static final List PROPERTY_DESCRIPTORS; |
| 46 | |
| 47 | static { |
| 48 | List propertyList = new ArrayList(2); |
| 49 | createPropertyList(NumberLiteral.class, propertyList); |
| 50 | addProperty(TOKEN_PROPERTY, propertyList); |
| 51 | PROPERTY_DESCRIPTORS = reapPropertyList(propertyList); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Returns a list of structural property descriptors for this node type. |
| 56 | * Clients must not modify the result. |
| 57 | * |
| 58 | * @param apiLevel the API level; one of the |
| 59 | * <code>AST.JLS*</code> constants |
| 60 | |
| 61 | * @return a list of property descriptors (element type: |
| 62 | * {@link StructuralPropertyDescriptor}) |
| 63 | * @since 3.0 |
| 64 | */ |
| 65 | public static List propertyDescriptors(int apiLevel) { |
| 66 | return PROPERTY_DESCRIPTORS; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * The token string; defaults to the integer literal "0". |
| 71 | */ |
| 72 | private String tokenValue = "0";//$NON-NLS-1$ |
| 73 | |
| 74 | /** |
| 75 | * Creates a new unparented number literal node owned by the given AST. |
| 76 | * By default, the number literal is the token "<code>0</code>". |
| 77 | * <p> |
| 78 | * N.B. This constructor is package-private. |
| 79 | * </p> |
| 80 | * |
| 81 | * @param ast the AST that is to own this node |
| 82 | */ |
| 83 | NumberLiteral(AST ast) { |
| 84 | super(ast); |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | final List internalStructuralPropertiesForType(int apiLevel) { |
| 89 | return propertyDescriptors(apiLevel); |
| 90 | } |
| 91 | |
| 92 | @Override |
| 93 | final Object internalGetSetObjectProperty(SimplePropertyDescriptor property, boolean get, Object value) { |
| 94 | if (property == TOKEN_PROPERTY) { |
| 95 | if (get) { |
| 96 | return getToken(); |
| 97 | } else { |
| 98 | setToken((String) value); |
| 99 | return null; |
| 100 | } |
| 101 | } |
| 102 | // allow default implementation to flag the error |
| 103 | return super.internalGetSetObjectProperty(property, get, value); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | final int getNodeType0() { |
| 108 | return NUMBER_LITERAL; |
| 109 | } |
| 110 | |
| 111 | @Override |
| 112 | ASTNode clone0(AST target) { |
| 113 | NumberLiteral result = new NumberLiteral(target); |
| 114 | result.setSourceRange(getStartPosition(), getLength()); |
| 115 | result.setToken(getToken()); |
| 116 | return result; |
| 117 | } |
| 118 | |
| 119 | @Override |
| 120 | final boolean subtreeMatch0(ASTMatcher matcher, Object other) { |
| 121 | // dispatch to correct overloaded match method |
| 122 | return matcher.match(this, other); |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | void accept0(ASTVisitor visitor) { |
| 127 | visitor.visit(this); |
| 128 | visitor.endVisit(this); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Returns the token of this number literal node. The value is the sequence |
| 133 | * of characters that would appear in the source program. |
| 134 | * |
| 135 | * @return the numeric literal token |
| 136 | */ |
| 137 | public String getToken() { |
| 138 | return this.tokenValue; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Sets the token of this number literal node. The value is the sequence |
| 143 | * of characters that would appear in the source program. |
| 144 | * |
| 145 | * @param token the numeric literal token |
| 146 | * @exception IllegalArgumentException if the argument is incorrect |
| 147 | */ |
| 148 | public void setToken(String token) { |
| 149 | // update internalSetToken(String) if this is changed |
| 150 | if (token == null || token.length() == 0) { |
| 151 | throw new IllegalArgumentException(); |
| 152 | } |
| 153 | Scanner scanner = this.ast.scanner; |
| 154 | char[] source = token.toCharArray(); |
| 155 | scanner.setSource(source); |
| 156 | scanner.resetTo(0, source.length); |
| 157 | scanner.tokenizeComments = false; |
| 158 | scanner.tokenizeWhiteSpace = false; |
| 159 | try { |
| 160 | int tokenType = scanner.getNextToken(); |
| 161 | switch(tokenType) { |
| 162 | case TerminalTokens.TokenNameDoubleLiteral: |
| 163 | case TerminalTokens.TokenNameIntegerLiteral: |
| 164 | case TerminalTokens.TokenNameFloatingPointLiteral: |
| 165 | case TerminalTokens.TokenNameLongLiteral: |
| 166 | break; |
| 167 | case TerminalTokens.TokenNameMINUS : |
| 168 | tokenType = scanner.getNextToken(); |
| 169 | switch(tokenType) { |
| 170 | case TerminalTokens.TokenNameDoubleLiteral: |
| 171 | case TerminalTokens.TokenNameIntegerLiteral: |
| 172 | case TerminalTokens.TokenNameFloatingPointLiteral: |
| 173 | case TerminalTokens.TokenNameLongLiteral: |
| 174 | break; |
| 175 | default: |
| 176 | throw new IllegalArgumentException("Invalid number literal : >" + token + "<"); //$NON-NLS-1$//$NON-NLS-2$ |
| 177 | } |
| 178 | break; |
| 179 | default: |
| 180 | throw new IllegalArgumentException("Invalid number literal : >" + token + "<");//$NON-NLS-1$//$NON-NLS-2$ |
| 181 | } |
| 182 | } catch(InvalidInputException e) { |
| 183 | throw new IllegalArgumentException(); |
| 184 | } finally { |
| 185 | scanner.tokenizeComments = true; |
| 186 | scanner.tokenizeWhiteSpace = true; |
| 187 | } |
| 188 | preValueChange(TOKEN_PROPERTY); |
| 189 | this.tokenValue = token; |
| 190 | postValueChange(TOKEN_PROPERTY); |
| 191 | } |
| 192 | |
| 193 | /* (omit javadoc for this method) |
| 194 | * This method is a copy of setToken(String) that doesn't do any validation. |
| 195 | */ |
| 196 | void internalSetToken(String token) { |
| 197 | preValueChange(TOKEN_PROPERTY); |
| 198 | this.tokenValue = token; |
| 199 | postValueChange(TOKEN_PROPERTY); |
| 200 | } |
| 201 | |
| 202 | @Override |
| 203 | int memSize() { |
| 204 | int size = BASE_NODE_SIZE + 1 * 4 + stringSize(this.tokenValue); |
| 205 | return size; |
| 206 | } |
| 207 | |
| 208 | @Override |
| 209 | int treeSize() { |
| 210 | return memSize(); |
| 211 | } |
| 212 | } |
| 213 |
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