| 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 | * Alternate constructor invocation statement AST node type. |
| 22 | * <pre> |
| 23 | * ConstructorInvocation: |
| 24 | * [ <b><</b> Type { <b>,</b> Type } <b>></b> ] |
| 25 | * <b>this</b> <b>(</b> [ Expression { <b>,</b> Expression } ] <b>)</b> <b>;</b> |
| 26 | * </pre> |
| 27 | * |
| 28 | * @since 2.0 |
| 29 | * @noinstantiate This class is not intended to be instantiated by clients. |
| 30 | */ |
| 31 | @SuppressWarnings({"rawtypes", "unchecked"}) |
| 32 | public class ConstructorInvocation extends Statement { |
| 33 | |
| 34 | /** |
| 35 | * The "typeArguments" structural property of this node type (element type: {@link Type}) (added in JLS3 API). |
| 36 | * @since 3.1 |
| 37 | */ |
| 38 | public static final ChildListPropertyDescriptor TYPE_ARGUMENTS_PROPERTY = |
| 39 | new ChildListPropertyDescriptor(ConstructorInvocation.class, "typeArguments", Type.class, NO_CYCLE_RISK); //$NON-NLS-1$ |
| 40 | |
| 41 | /** |
| 42 | * The "arguments" structural property of this node type (element type: {@link Expression}). |
| 43 | * @since 3.0 |
| 44 | */ |
| 45 | public static final ChildListPropertyDescriptor ARGUMENTS_PROPERTY = |
| 46 | new ChildListPropertyDescriptor(ConstructorInvocation.class, "arguments", Expression.class, CYCLE_RISK); //$NON-NLS-1$ |
| 47 | |
| 48 | /** |
| 49 | * A list of property descriptors (element type: |
| 50 | * {@link StructuralPropertyDescriptor}), |
| 51 | * or null if uninitialized. |
| 52 | * @since 3.0 |
| 53 | */ |
| 54 | private static final List PROPERTY_DESCRIPTORS_2_0; |
| 55 | |
| 56 | /** |
| 57 | * A list of property descriptors (element type: |
| 58 | * {@link StructuralPropertyDescriptor}), |
| 59 | * or null if uninitialized. |
| 60 | * @since 3.1 |
| 61 | */ |
| 62 | private static final List PROPERTY_DESCRIPTORS_3_0; |
| 63 | |
| 64 | static { |
| 65 | List properyList = new ArrayList(2); |
| 66 | createPropertyList(ConstructorInvocation.class, properyList); |
| 67 | addProperty(ARGUMENTS_PROPERTY, properyList); |
| 68 | PROPERTY_DESCRIPTORS_2_0 = reapPropertyList(properyList); |
| 69 | |
| 70 | properyList = new ArrayList(3); |
| 71 | createPropertyList(ConstructorInvocation.class, properyList); |
| 72 | addProperty(TYPE_ARGUMENTS_PROPERTY, properyList); |
| 73 | addProperty(ARGUMENTS_PROPERTY, properyList); |
| 74 | PROPERTY_DESCRIPTORS_3_0 = reapPropertyList(properyList); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Returns a list of structural property descriptors for this node type. |
| 79 | * Clients must not modify the result. |
| 80 | * |
| 81 | * @param apiLevel the API level; one of the |
| 82 | * <code>AST.JLS*</code> constants |
| 83 | |
| 84 | * @return a list of property descriptors (element type: |
| 85 | * {@link StructuralPropertyDescriptor}) |
| 86 | * @since 3.0 |
| 87 | */ |
| 88 | public static List propertyDescriptors(int apiLevel) { |
| 89 | if (apiLevel == AST.JLS2_INTERNAL) { |
| 90 | return PROPERTY_DESCRIPTORS_2_0; |
| 91 | } else { |
| 92 | return PROPERTY_DESCRIPTORS_3_0; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * The type arguments (element type: {@link Type}). |
| 98 | * Null in JLS2. Added in JLS3; defaults to an empty list |
| 99 | * (see constructor). |
| 100 | * @since 3.1 |
| 101 | */ |
| 102 | private ASTNode.NodeList typeArguments = null; |
| 103 | |
| 104 | /** |
| 105 | * The list of argument expressions (element type: |
| 106 | * {@link Expression}). Defaults to an empty list. |
| 107 | */ |
| 108 | private ASTNode.NodeList arguments = |
| 109 | new ASTNode.NodeList(ARGUMENTS_PROPERTY); |
| 110 | |
| 111 | /** |
| 112 | * Creates a new AST node for an alternate constructor invocation statement |
| 113 | * owned by the given AST. By default, an empty list of arguments. |
| 114 | * |
| 115 | * @param ast the AST that is to own this node |
| 116 | */ |
| 117 | ConstructorInvocation(AST ast) { |
| 118 | super(ast); |
| 119 | if (ast.apiLevel >= AST.JLS3_INTERNAL) { |
| 120 | this.typeArguments = new ASTNode.NodeList(TYPE_ARGUMENTS_PROPERTY); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | final List internalStructuralPropertiesForType(int apiLevel) { |
| 126 | return propertyDescriptors(apiLevel); |
| 127 | } |
| 128 | |
| 129 | @Override |
| 130 | final List internalGetChildListProperty(ChildListPropertyDescriptor property) { |
| 131 | if (property == ARGUMENTS_PROPERTY) { |
| 132 | return arguments(); |
| 133 | } |
| 134 | if (property == TYPE_ARGUMENTS_PROPERTY) { |
| 135 | return typeArguments(); |
| 136 | } |
| 137 | // allow default implementation to flag the error |
| 138 | return super.internalGetChildListProperty(property); |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | final int getNodeType0() { |
| 143 | return CONSTRUCTOR_INVOCATION; |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | ASTNode clone0(AST target) { |
| 148 | ConstructorInvocation result = new ConstructorInvocation(target); |
| 149 | result.setSourceRange(getStartPosition(), getLength()); |
| 150 | result.copyLeadingComment(this); |
| 151 | if (this.ast.apiLevel >= AST.JLS3_INTERNAL) { |
| 152 | result.typeArguments().addAll(ASTNode.copySubtrees(target, typeArguments())); |
| 153 | } |
| 154 | result.arguments().addAll(ASTNode.copySubtrees(target, arguments())); |
| 155 | return result; |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | final boolean subtreeMatch0(ASTMatcher matcher, Object other) { |
| 160 | // dispatch to correct overloaded match method |
| 161 | return matcher.match(this, other); |
| 162 | } |
| 163 | |
| 164 | @Override |
| 165 | void accept0(ASTVisitor visitor) { |
| 166 | boolean visitChildren = visitor.visit(this); |
| 167 | if (visitChildren) { |
| 168 | if (this.ast.apiLevel >= AST.JLS3_INTERNAL) { |
| 169 | acceptChildren(visitor, this.typeArguments); |
| 170 | } |
| 171 | acceptChildren(visitor, this.arguments); |
| 172 | } |
| 173 | visitor.endVisit(this); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Returns the live ordered list of type arguments of this constructor |
| 178 | * invocation (added in JLS3 API). |
| 179 | * |
| 180 | * @return the live list of type arguments |
| 181 | * (element type: {@link Type}) |
| 182 | * @exception UnsupportedOperationException if this operation is used in |
| 183 | * a JLS2 AST |
| 184 | * @since 3.1 |
| 185 | */ |
| 186 | public List typeArguments() { |
| 187 | // more efficient than just calling unsupportedIn2() to check |
| 188 | if (this.typeArguments == null) { |
| 189 | unsupportedIn2(); |
| 190 | } |
| 191 | return this.typeArguments; |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Returns the live ordered list of argument expressions in this alternate |
| 196 | * constructor invocation statement. |
| 197 | * |
| 198 | * @return the live list of argument expressions |
| 199 | * (element type: {@link Expression}) |
| 200 | */ |
| 201 | public List arguments() { |
| 202 | return this.arguments; |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Resolves and returns the binding for the constructor invoked by this |
| 207 | * expression. |
| 208 | * <p> |
| 209 | * Note that bindings are generally unavailable unless requested when the |
| 210 | * AST is being built. |
| 211 | * </p> |
| 212 | * |
| 213 | * @return the constructor binding, or <code>null</code> if the binding |
| 214 | * cannot be resolved |
| 215 | */ |
| 216 | public IMethodBinding resolveConstructorBinding() { |
| 217 | return this.ast.getBindingResolver().resolveConstructor(this); |
| 218 | } |
| 219 | |
| 220 | @Override |
| 221 | int memSize() { |
| 222 | // treat Code as free |
| 223 | return BASE_NODE_SIZE + 2 * 4; |
| 224 | } |
| 225 | |
| 226 | @Override |
| 227 | int treeSize() { |
| 228 | return |
| 229 | memSize() |
| 230 | + (this.typeArguments == null ? 0 : this.typeArguments.listSize()) |
| 231 | + (this.arguments == null ? 0 : this.arguments.listSize()); |
| 232 | } |
| 233 | } |
| 234 | |
| 235 |
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