| /* |
| * Copyright 2013 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.core.ext; |
| |
| import com.google.gwt.dev.cfg.RuleGenerateWith; |
| import com.google.gwt.thirdparty.guava.common.base.Preconditions; |
| |
| import java.util.Set; |
| |
| /** |
| * A property oracle that prevents access to any properties not named in its predefined set.<br /> |
| * |
| * Used by the generator driver framework to limit property access for the purpose of |
| * forcing generators to accurately declare their property dependencies. |
| */ |
| public class SubsetFilteringPropertyOracle implements PropertyOracle { |
| |
| private final Set<String> accessiblePropertyNames; |
| private final String accessViolationMessage; |
| private final PropertyOracle wrappedPropertyOracle; |
| |
| public SubsetFilteringPropertyOracle(Set<String> accessiblePropertyNames, |
| PropertyOracle wrappedPropertyOracle, String accessViolationMessage) { |
| this.accessiblePropertyNames = accessiblePropertyNames; |
| this.wrappedPropertyOracle = wrappedPropertyOracle; |
| this.accessViolationMessage = accessViolationMessage; |
| } |
| |
| @Override |
| public ConfigurationProperty getConfigurationProperty(String propertyName) |
| throws BadPropertyValueException { |
| Preconditions.checkState(accessiblePropertyNames.equals(RuleGenerateWith.ALL_PROPERTIES) |
| || accessiblePropertyNames.contains(propertyName), "Access to configuration property '" |
| + propertyName + "' is not allowed. " + accessViolationMessage); |
| return wrappedPropertyOracle.getConfigurationProperty(propertyName); |
| } |
| |
| @Override |
| public SelectionProperty getSelectionProperty(TreeLogger logger, String propertyName) |
| throws BadPropertyValueException { |
| Preconditions.checkState(accessiblePropertyNames.equals(RuleGenerateWith.ALL_PROPERTIES) |
| || accessiblePropertyNames.contains(propertyName), "Access to binding property '" |
| + propertyName + "' is not allowed. " + accessViolationMessage); |
| return wrappedPropertyOracle.getSelectionProperty(logger, propertyName); |
| } |
| } |