| /* |
| * 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.jjs.ast; |
| |
| import com.google.gwt.dev.jjs.SourceInfo; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Represents a GWT.create() or a GWT.getProperty call before deferred binding decisions are |
| * finalized. These nodes are replaced by the appropriate expressions by |
| * {@link com.google.gwt.dev.jjs.impl.ResolvePermutationDependentValues}. |
| */ |
| public class JPermutationDependentValue extends JExpression { |
| |
| private enum Type { PROPERTY, TYPE_REBIND }; |
| |
| private final List<JExpression> resultExpressions; |
| private final List<String> resultValues; |
| private final JExpression defaultValueExpression; |
| private final String requestedValue; |
| private final Type valueType; |
| private JType type; |
| |
| private JPermutationDependentValue(SourceInfo info, Type valueType, String requestedValue, |
| List<String> resultValues, JExpression defaultValueExpression, JType resultType, |
| List<JExpression> resultExpressions) { |
| super(info); |
| this.requestedValue = requestedValue; |
| this.resultValues = resultValues; |
| this.type = resultType; |
| this.resultExpressions = resultExpressions; |
| this.valueType = valueType; |
| this.defaultValueExpression = defaultValueExpression; |
| } |
| |
| public static JPermutationDependentValue createTypeRebind(JProgram program, SourceInfo info, |
| String requestedType, List<String> resultTypes, List<JExpression> instantiationExpressions) { |
| return new JPermutationDependentValue(info, Type.TYPE_REBIND, requestedType, resultTypes, null, |
| program.getTypeJavaLangObject(), instantiationExpressions); |
| } |
| |
| public static JPermutationDependentValue createRuntimeProperty( |
| JProgram program, SourceInfo info, String propertyName, JExpression defaultValueExpression) { |
| return new JPermutationDependentValue(info, Type.PROPERTY, propertyName, null, |
| defaultValueExpression, program.getTypeJavaLangString(), |
| Collections.<JExpression>emptyList()); |
| } |
| |
| public JExpression getDefaultValueExpression() { |
| return defaultValueExpression; |
| } |
| |
| public List<JExpression> getResultExpressions() { |
| return resultExpressions; |
| } |
| |
| public List<String> getResultValues() { |
| return resultValues; |
| } |
| |
| public String getRequestedValue() { |
| return requestedValue; |
| } |
| |
| @Override |
| public JType getType() { |
| return type; |
| } |
| |
| public boolean isTypeRebind() { |
| return valueType == Type.TYPE_REBIND; |
| } |
| |
| public boolean isProperty() { |
| return valueType == Type.PROPERTY; |
| } |
| |
| @Override |
| public boolean hasSideEffects() { |
| for (JExpression expr : resultExpressions) { |
| if (expr.hasSideEffects()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public void setType(JType newType) { |
| type = newType; |
| } |
| |
| @Override |
| public void traverse(JVisitor visitor, Context ctx) { |
| if (visitor.visit(this, ctx)) { |
| visitor.accept(resultExpressions); |
| } |
| visitor.endVisit(this, ctx); |
| } |
| } |