| /* |
| * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.nashorn.internal.ir; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.RandomAccess; |
| import jdk.nashorn.internal.codegen.types.Type; |
| import jdk.nashorn.internal.ir.annotations.Immutable; |
| import jdk.nashorn.internal.ir.visitor.NodeVisitor; |
| |
| /** |
| * IR representation of an object literal. |
| */ |
| @Immutable |
| public final class ObjectNode extends Expression implements LexicalContextNode, Splittable { |
| private static final long serialVersionUID = 1L; |
| |
| /** Literal elements. */ |
| private final List<PropertyNode> elements; |
| |
| /** Ranges for splitting large literals over multiple compile units in codegen. */ |
| private final List<Splittable.SplitRange> splitRanges; |
| |
| /** |
| * Constructor |
| * |
| * @param token token |
| * @param finish finish |
| * @param elements the elements used to initialize this ObjectNode |
| */ |
| public ObjectNode(final long token, final int finish, final List<PropertyNode> elements) { |
| super(token, finish); |
| this.elements = elements; |
| this.splitRanges = null; |
| assert elements instanceof RandomAccess : "Splitting requires random access lists"; |
| } |
| |
| private ObjectNode(final ObjectNode objectNode, final List<PropertyNode> elements, |
| final List<Splittable.SplitRange> splitRanges ) { |
| super(objectNode); |
| this.elements = elements; |
| this.splitRanges = splitRanges; |
| } |
| |
| @Override |
| public Node accept(final NodeVisitor<? extends LexicalContext> visitor) { |
| return Acceptor.accept(this, visitor); |
| } |
| |
| @Override |
| public Node accept(final LexicalContext lc, final NodeVisitor<? extends LexicalContext> visitor) { |
| if (visitor.enterObjectNode(this)) { |
| return visitor.leaveObjectNode(setElements(lc, Node.accept(visitor, elements))); |
| } |
| return this; |
| } |
| |
| @Override |
| public Type getType() { |
| return Type.OBJECT; |
| } |
| |
| @Override |
| public void toString(final StringBuilder sb, final boolean printType) { |
| sb.append('{'); |
| |
| if (!elements.isEmpty()) { |
| sb.append(' '); |
| |
| boolean first = true; |
| for (final Node element : elements) { |
| if (!first) { |
| sb.append(", "); |
| } |
| first = false; |
| |
| element.toString(sb, printType); |
| } |
| sb.append(' '); |
| } |
| |
| sb.append('}'); |
| } |
| |
| /** |
| * Get the elements of this literal node |
| * @return a list of elements |
| */ |
| public List<PropertyNode> getElements() { |
| return Collections.unmodifiableList(elements); |
| } |
| |
| private ObjectNode setElements(final LexicalContext lc, final List<PropertyNode> elements) { |
| if (this.elements == elements) { |
| return this; |
| } |
| return Node.replaceInLexicalContext(lc, this, new ObjectNode(this, elements, this.splitRanges)); |
| } |
| |
| /** |
| * Set the split ranges for this ObjectNode |
| * @see Splittable.SplitRange |
| * @param lc the lexical context |
| * @param splitRanges list of split ranges |
| * @return new or changed object node |
| */ |
| public ObjectNode setSplitRanges(final LexicalContext lc, final List<Splittable.SplitRange> splitRanges) { |
| if (this.splitRanges == splitRanges) { |
| return this; |
| } |
| return Node.replaceInLexicalContext(lc, this, new ObjectNode(this, elements, splitRanges)); |
| } |
| |
| /** |
| * Get the split ranges for this ObjectNode, or null if the object is not split. |
| * @see Splittable.SplitRange |
| * @return list of split ranges |
| */ |
| @Override |
| public List<Splittable.SplitRange> getSplitRanges() { |
| return splitRanges == null ? null : Collections.unmodifiableList(splitRanges); |
| } |
| |
| } |