/*
* 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.common.css.compiler.passes;
import com.google.common.css.compiler.ast.CssCompilerPass;
import com.google.common.css.compiler.ast.CssDefinitionNode;
import com.google.common.css.compiler.ast.CssTree;
import com.google.common.css.compiler.ast.DefaultTreeVisitor;
import com.google.common.css.compiler.ast.VisitController;
/**
* A pass that collects the constant definitions inside the tree.
*
* @author oana@google.com (Oana Florescu)
*/
public class CollectConstantDefinitions extends DefaultTreeVisitor
implements CssCompilerPass {
private final VisitController visitController;
private final ConstantDefinitions constantDefinitions;
public CollectConstantDefinitions(CssTree tree) {
this(tree.getVisitController());
}
public CollectConstantDefinitions(VisitController visitController) {
this.visitController = visitController;
this.constantDefinitions = new ConstantDefinitions();
}
@Override
public boolean enterDefinition(CssDefinitionNode node) {
constantDefinitions.addConstantDefinition(node);
return true;
}
@Override
public void runPass() {
visitController.startVisit(this);
}
public ConstantDefinitions getConstantDefinitions() {
return constantDefinitions;
}
}