| /* |
| * 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.dev.jjs.SourceOrigin; |
| import com.google.gwt.thirdparty.guava.common.collect.Lists; |
| |
| import java.util.List; |
| |
| /** |
| * A JavaScript object literal. |
| */ |
| public final class JsObjectLiteral extends JsLiteral { |
| |
| public static Builder builder() { |
| return new Builder(); |
| } |
| |
| /** |
| * Builder class for JsObjectLiterals. |
| */ |
| public static class Builder { |
| |
| private Builder() { } |
| |
| private List<JsPropertyInitializer> propertyInitializers = Lists.newArrayList(); |
| private SourceInfo sourceInfo = SourceOrigin.UNKNOWN; |
| private boolean internable = false; |
| |
| public Builder add(String property, JsExpression value) { |
| add(new JsNameRef(sourceInfo, property), value); |
| return this; |
| } |
| |
| public Builder add(JsExpression property, JsExpression value) { |
| add(sourceInfo, property, value); |
| return this; |
| } |
| |
| public Builder add(SourceInfo sourceInfo, JsExpression property, JsExpression value) { |
| propertyInitializers.add(new JsPropertyInitializer(sourceInfo, property, value)); |
| return this; |
| } |
| |
| public Builder setSourceInfo(SourceInfo info) { |
| sourceInfo = info; |
| return this; |
| } |
| |
| public Builder setInternable() { |
| internable = true; |
| return this; |
| } |
| |
| public JsObjectLiteral build() { |
| JsObjectLiteral objectLiteral = new JsObjectLiteral(sourceInfo); |
| objectLiteral.getPropertyInitializers().addAll(propertyInitializers); |
| if (internable) { |
| objectLiteral.setInternable(); |
| } |
| return objectLiteral; |
| } |
| } |
| |
| private final List<JsPropertyInitializer> properties = Lists.newArrayList(); |
| |
| private boolean internable = false; |
| |
| public JsObjectLiteral(SourceInfo sourceInfo) { |
| super(sourceInfo); |
| } |
| |
| /** |
| * Adds a property and its initial value to the object literal. |
| * <p> |
| * NOTE: Does not check for duplicate names. |
| */ |
| public void addProperty(SourceInfo sourceInfo, JsExpression label, JsExpression value) { |
| properties.add(new JsPropertyInitializer(sourceInfo, label, value)); |
| } |
| |
| /** |
| * Adds a property and its initial value to the object literal. |
| * <p> |
| * NOTE: Does not check for duplicate names. |
| */ |
| public void addProperty(SourceInfo sourceInfo, String label, JsExpression value) { |
| addProperty(sourceInfo, new JsStringLiteral(sourceInfo, label), value); |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that == null || this.getClass() != that.getClass()) { |
| return false; |
| } |
| JsObjectLiteral thatLiteral = (JsObjectLiteral) that; |
| return internable == thatLiteral.internable && properties.equals(thatLiteral.properties); |
| } |
| |
| @Override |
| public NodeKind getKind() { |
| return NodeKind.OBJECT; |
| } |
| |
| public List<JsPropertyInitializer> getPropertyInitializers() { |
| return properties; |
| } |
| |
| @Override |
| public int hashCode() { |
| return properties.hashCode() + 17 * (internable ? 0 : 1); |
| } |
| |
| @Override |
| public boolean hasSideEffects() { |
| for (JsPropertyInitializer prop : properties) { |
| if (prop.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(properties); |
| } |
| v.endVisit(this, ctx); |
| } |
| |
| /** |
| * Some object literals are not mutated and hence internable. |
| */ |
| @Override |
| public boolean isInternable() { |
| return internable; |
| } |
| |
| public void setInternable() { |
| internable = true; |
| } |
| } |