| /* |
| * Copyright 2009 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.resources.css; |
| |
| import com.google.gwt.core.ext.BadPropertyValueException; |
| import com.google.gwt.core.ext.TreeLogger; |
| import com.google.gwt.resources.css.ast.Context; |
| import com.google.gwt.resources.css.ast.CssCompilerException; |
| import com.google.gwt.resources.css.ast.CssIf; |
| import com.google.gwt.resources.css.ast.CssVisitor; |
| import com.google.gwt.resources.ext.ClientBundleRequirements; |
| |
| /** |
| * Analyzes a stylesheet to update the ClientBundleRequirements interface. |
| */ |
| public class RequirementsCollector extends CssVisitor { |
| private final TreeLogger logger; |
| private final ClientBundleRequirements requirements; |
| |
| public RequirementsCollector(TreeLogger logger, |
| ClientBundleRequirements requirements) { |
| this.logger = logger.branch(TreeLogger.DEBUG, |
| "Scanning CSS for requirements"); |
| this.requirements = requirements; |
| } |
| |
| @Override |
| public void endVisit(CssIf x, Context ctx) { |
| String propertyName = x.getPropertyName(); |
| if (propertyName != null) { |
| try { |
| requirements.addPermutationAxis(propertyName); |
| } catch (BadPropertyValueException e) { |
| logger.log(TreeLogger.ERROR, "Unknown deferred-binding property " |
| + propertyName, e); |
| throw new CssCompilerException("Unknown deferred-binding property", e); |
| } |
| } |
| } |
| } |