/*
* Copyright 2007 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.dev.js.ast.JsName;
import com.google.gwt.dev.js.ast.JsNameRef;
import com.google.gwt.dev.js.ast.JsProgram;
/**
* Resolves any unresolved JsNameRefs.
*/
public class JsSymbolResolver {
/**
* Resolves any unresolved JsNameRefs.
*/
private class JsResolveSymbolsVisitor extends JsAbstractSymbolResolver {
@Override
protected void resolve(JsNameRef x) {
JsName name;
String ident = x.getIdent();
if (x.getQualifier() == null) {
name = getScope().findExistingName(ident);
if (name == null) {
// No clue what this is; create a new unobfuscatable name
name = program.getRootScope().declareName(ident);
name.setObfuscatable(false);
}
} else {
name = program.getObjectScope().findExistingName(ident);
if (name == null) {
// No clue what this is; create a new unobfuscatable name
name = program.getObjectScope().declareName(ident);
name.setObfuscatable(false);
}
}
x.resolve(name);
}
}
public static void exec(JsProgram program) {
new JsSymbolResolver(program).execImpl();
}
private final JsProgram program;
private JsSymbolResolver(JsProgram program) {
this.program = program;
}
private void execImpl() {
JsResolveSymbolsVisitor resolver = new JsResolveSymbolsVisitor();
resolver.accept(program);
}
}