/*
* Copyright 2006 The Closure Compiler Authors.
*
* 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.javascript.jscomp;
import com.google.javascript.rhino.Node;
/**
* <p>Interface for classes that can compile JS.</p>
*
* <p>Class has single function "process", which is passed
* the root node of the parsed JS tree, as well as the
* root node of the external JS tree (used to provide a public API
* and prevent renaming of system functions).</p>
*
* <p>Use this class to support testing with BaseCompilerTest</p>
*
*/
public interface CompilerPass {
/**
* Process the JS with root node root.
* Can modify the contents of each Node tree
* @param externs Top of external JS tree
* @param root Top of JS tree
*/
void process(Node externs, Node root);
}