com.google.gwt.dev.js.ClosureJsAst Maven / Gradle / Ivy
/*
* Copyright 2011 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.js;
import com.google.gwt.thirdparty.guava.common.base.Preconditions;
import com.google.gwt.thirdparty.javascript.jscomp.AbstractCompiler;
import com.google.gwt.thirdparty.javascript.jscomp.SourceAst;
import com.google.gwt.thirdparty.javascript.jscomp.SourceFile;
import com.google.gwt.thirdparty.javascript.rhino.InputId;
import com.google.gwt.thirdparty.javascript.rhino.Node;
/**
* Maps the JavaScript AST to a Closure Compiler input source.
*/
public class ClosureJsAst implements SourceAst {
private static final long serialVersionUID = 1L;
/*
* Root node of internal JS Compiler AST which represents the same source. In order to get the
* tree, getAstRoot() has to be called.
*/
private Node root;
private final InputId inputId;
public ClosureJsAst(InputId inputId, Node root) {
Preconditions.checkNotNull(root);
this.inputId = inputId;
this.root = root;
}
@Override
public void clearAst() {
root = null;
}
@Override
public Node getAstRoot(AbstractCompiler compiler) {
return root;
}
@Override
public InputId getInputId() {
return inputId;
}
@Override
public SourceFile getSourceFile() {
return null;
}
public String getSourceName() {
return null;
}
@Override
public void setSourceFile(SourceFile file) {
throw new UnsupportedOperationException(
"ClosureJsAst cannot be associated with a SourceFile instance.");
}
}