| /* |
| * Copyright 2008 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
| * in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev.js.ast; |
| |
| import com.google.gwt.dev.jjs.SourceInfo; |
| import com.google.gwt.thirdparty.guava.common.collect.Iterables; |
| import com.google.gwt.thirdparty.guava.common.collect.Lists; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Represents a JavaScript expression for array literals. |
| */ |
| public final class JsArrayLiteral extends JsLiteral { |
| |
| private final List<JsExpression> exprs = Lists.newArrayList(); |
| |
| private boolean internable = false; |
| |
| public JsArrayLiteral(SourceInfo sourceInfo, Iterable<JsExpression> expressions) { |
| super(sourceInfo); |
| Iterables.addAll(this.exprs, expressions); |
| } |
| |
| public JsArrayLiteral(SourceInfo sourceInfo, JsExpression... expressions) { |
| this(sourceInfo, Arrays.asList(expressions)); |
| } |
| |
| public List<JsExpression> getExpressions() { |
| return exprs; |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that == null || this.getClass() != that.getClass()) { |
| return false; |
| } |
| JsArrayLiteral thatLiteral = (JsArrayLiteral) that; |
| return internable == thatLiteral.internable && exprs.equals(thatLiteral.exprs); |
| } |
| |
| @Override |
| public NodeKind getKind() { |
| return NodeKind.ARRAY; |
| } |
| |
| @Override |
| public int hashCode() { |
| return exprs.hashCode() + 17 * (internable ? 0 : 1); |
| } |
| |
| @Override |
| public boolean hasSideEffects() { |
| for (JsExpression expr : exprs) { |
| if (expr.hasSideEffects()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean isBooleanFalse() { |
| return false; |
| } |
| |
| @Override |
| public boolean isBooleanTrue() { |
| return true; |
| } |
| |
| @Override |
| public boolean isDefinitelyNull() { |
| return false; |
| } |
| |
| @Override |
| public void traverse(JsVisitor v, JsContext ctx) { |
| if (v.visit(this, ctx)) { |
| v.acceptWithInsertRemove(exprs); |
| } |
| v.endVisit(this, ctx); |
| } |
| |
| /** |
| * Some array literals are not mutated and hence internable. |
| */ |
| @Override |
| public boolean isInternable() { |
| return internable; |
| } |
| |
| public void setInternable() { |
| internable = true; |
| } |
| } |