--- a/jdk/src/share/classes/com/sun/script/javascript/RhinoScriptEngine.java Mon May 13 12:26:28 2013 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,398 +0,0 @@
-/*
- * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package com.sun.script.javascript;
-import com.sun.script.util.*;
-import javax.script.*;
-import sun.org.mozilla.javascript.internal.*;
-import java.lang.reflect.Method;
-import java.io.*;
-import java.util.*;
-
-
-/**
- * Implementation of <code>ScriptEngine</code> using the Mozilla Rhino
- * interpreter.
- *
- * @author Mike Grogan
- * @author A. Sundararajan
- * @since 1.6
- */
-public final class RhinoScriptEngine extends AbstractScriptEngine
- implements Invocable, Compilable {
-
- private static final boolean DEBUG = false;
-
- /* Scope where standard JavaScript objects and our
- * extensions to it are stored. Note that these are not
- * user defined engine level global variables. These are
- * variables have to be there on all compliant ECMAScript
- * scopes. We put these standard objects in this top level.
- */
- private RhinoTopLevel topLevel;
-
- /* map used to store indexed properties in engine scope
- * refer to comment on 'indexedProps' in ExternalScriptable.java.
- */
- private Map<Object, Object> indexedProps;
-
- private ScriptEngineFactory factory;
- private InterfaceImplementor implementor;
-
- private static final int languageVersion = getLanguageVersion();
- private static final int optimizationLevel = getOptimizationLevel();
- static {
- ContextFactory.initGlobal(new ContextFactory() {
- protected Context makeContext() {
- Context cx = super.makeContext();
- cx.setLanguageVersion(languageVersion);
- cx.setOptimizationLevel(optimizationLevel);
- cx.setClassShutter(RhinoClassShutter.getInstance());
- cx.setWrapFactory(RhinoWrapFactory.getInstance());
- return cx;
- }
- });
- }
-
- private static final String RHINO_JS_VERSION = "rhino.js.version";
- private static int getLanguageVersion() {
- int version;
- String tmp = java.security.AccessController.doPrivileged(
- new sun.security.action.GetPropertyAction(RHINO_JS_VERSION));
- if (tmp != null) {
- version = Integer.parseInt((String)tmp);
- } else {
- version = Context.VERSION_1_8;
- }
- return version;
- }
-
- private static final String RHINO_OPT_LEVEL = "rhino.opt.level";
- private static int getOptimizationLevel() {
- int optLevel = -1;
- // disable optimizer under security manager, for now.
- if (System.getSecurityManager() == null) {
- optLevel = Integer.getInteger(RHINO_OPT_LEVEL, -1);
- }
- return optLevel;
- }
-
- /**
- * Creates a new instance of RhinoScriptEngine
- */
- public RhinoScriptEngine() {
-
- Context cx = enterContext();
- try {
- topLevel = new RhinoTopLevel(cx, this);
- } finally {
- cx.exit();
- }
-
- indexedProps = new HashMap<Object, Object>();
-
- //construct object used to implement getInterface
- implementor = new InterfaceImplementor(this) {
- protected boolean isImplemented(Object thiz, Class<?> iface) {
- Context cx = enterContext();
- try {
- if (thiz != null && !(thiz instanceof Scriptable)) {
- thiz = cx.toObject(thiz, topLevel);
- }
- Scriptable engineScope = getRuntimeScope(context);
- Scriptable localScope = (thiz != null)? (Scriptable) thiz :
- engineScope;
- for (Method method : iface.getMethods()) {
- // ignore methods of java.lang.Object class
- if (method.getDeclaringClass() == Object.class) {
- continue;
- }
- Object obj = ScriptableObject.getProperty(localScope, method.getName());
- if (! (obj instanceof Function)) {
- return false;
- }
- }
- return true;
- } finally {
- cx.exit();
- }
- }
-
- protected Object convertResult(Method method, Object res)
- throws ScriptException {
- Class desiredType = method.getReturnType();
- if (desiredType == Void.TYPE) {
- return null;
- } else {
- return Context.jsToJava(res, desiredType);
- }
- }
- };
- }
-
- public Object eval(Reader reader, ScriptContext ctxt)
- throws ScriptException {
- Object ret;
-
- Context cx = enterContext();
- try {
- Scriptable scope = getRuntimeScope(ctxt);
- String filename = (String) get(ScriptEngine.FILENAME);
- filename = filename == null ? "<Unknown source>" : filename;
-
- ret = cx.evaluateReader(scope, reader, filename , 1, null);
- } catch (RhinoException re) {
- if (DEBUG) re.printStackTrace();
- int line = (line = re.lineNumber()) == 0 ? -1 : line;
- String msg;
- if (re instanceof JavaScriptException) {
- msg = String.valueOf(((JavaScriptException)re).getValue());
- } else {
- msg = re.toString();
- }
- ScriptException se = new ScriptException(msg, re.sourceName(), line);
- se.initCause(re);
- throw se;
- } catch (IOException ee) {
- throw new ScriptException(ee);
- } finally {
- cx.exit();
- }
-
- return unwrapReturnValue(ret);
- }
-
- public Object eval(String script, ScriptContext ctxt) throws ScriptException {
- if (script == null) {
- throw new NullPointerException("null script");
- }
- return eval(new StringReader(script) , ctxt);
- }
-
- public ScriptEngineFactory getFactory() {
- if (factory != null) {
- return factory;
- } else {
- return new RhinoScriptEngineFactory();
- }
- }
-
- public Bindings createBindings() {
- return new SimpleBindings();
- }
-
- //Invocable methods
- public Object invokeFunction(String name, Object... args)
- throws ScriptException, NoSuchMethodException {
- return invoke(null, name, args);
- }
-
- public Object invokeMethod(Object thiz, String name, Object... args)
- throws ScriptException, NoSuchMethodException {
- if (thiz == null) {
- throw new IllegalArgumentException("script object can not be null");
- }
- return invoke(thiz, name, args);
- }
-
- private Object invoke(Object thiz, String name, Object... args)
- throws ScriptException, NoSuchMethodException {
- Context cx = enterContext();
- try {
- if (name == null) {
- throw new NullPointerException("method name is null");
- }
-
- if (thiz != null && !(thiz instanceof Scriptable)) {
- thiz = cx.toObject(thiz, topLevel);
- }
-
- Scriptable engineScope = getRuntimeScope(context);
- Scriptable localScope = (thiz != null)? (Scriptable) thiz :
- engineScope;
- Object obj = ScriptableObject.getProperty(localScope, name);
- if (! (obj instanceof Function)) {
- throw new NoSuchMethodException("no such method: " + name);
- }
-
- Function func = (Function) obj;
- Scriptable scope = func.getParentScope();
- if (scope == null) {
- scope = engineScope;
- }
- Object result = func.call(cx, scope, localScope,
- wrapArguments(args));
- return unwrapReturnValue(result);
- } catch (RhinoException re) {
- if (DEBUG) re.printStackTrace();
- int line = (line = re.lineNumber()) == 0 ? -1 : line;
- ScriptException se = new ScriptException(re.toString(), re.sourceName(), line);
- se.initCause(re);
- throw se;
- } finally {
- cx.exit();
- }
- }
-
- public <T> T getInterface(Class<T> clasz) {
- try {
- return implementor.getInterface(null, clasz);
- } catch (ScriptException e) {
- return null;
- }
- }
-
- public <T> T getInterface(Object thiz, Class<T> clasz) {
- if (thiz == null) {
- throw new IllegalArgumentException("script object can not be null");
- }
-
- try {
- return implementor.getInterface(thiz, clasz);
- } catch (ScriptException e) {
- return null;
- }
- }
-
- private static final String printSource =
- "function print(str, newline) { \n" +
- " if (typeof(str) == 'undefined') { \n" +
- " str = 'undefined'; \n" +
- " } else if (str == null) { \n" +
- " str = 'null'; \n" +
- " } \n" +
- " var out = context.getWriter(); \n" +
- " if (!(out instanceof java.io.PrintWriter))\n" +
- " out = new java.io.PrintWriter(out); \n" +
- " out.print(String(str)); \n" +
- " if (newline) out.print('\\n'); \n" +
- " out.flush(); \n" +
- "}\n" +
- "function println(str) { \n" +
- " print(str, true); \n" +
- "}";
-
- Scriptable getRuntimeScope(ScriptContext ctxt) {
- if (ctxt == null) {
- throw new NullPointerException("null script context");
- }
-
- // we create a scope for the given ScriptContext
- Scriptable newScope = new ExternalScriptable(ctxt, indexedProps);
-
- // Set the prototype of newScope to be 'topLevel' so that
- // JavaScript standard objects are visible from the scope.
- newScope.setPrototype(topLevel);
-
- // define "context" variable in the new scope
- newScope.put("context", newScope, ctxt);
-
- // define "print", "println" functions in the new scope
- Context cx = enterContext();
- try {
- cx.evaluateString(newScope, printSource, "print", 1, null);
- } finally {
- cx.exit();
- }
- return newScope;
- }
-
-
- //Compilable methods
- public CompiledScript compile(String script) throws ScriptException {
- return compile(new StringReader(script));
- }
-
- public CompiledScript compile(java.io.Reader script) throws ScriptException {
- CompiledScript ret = null;
- Context cx = enterContext();
-
- try {
- String fileName = (String) get(ScriptEngine.FILENAME);
- if (fileName == null) {
- fileName = "<Unknown Source>";
- }
-
- Scriptable scope = getRuntimeScope(context);
- Script scr = cx.compileReader(scope, script, fileName, 1, null);
- ret = new RhinoCompiledScript(this, scr);
- } catch (Exception e) {
- if (DEBUG) e.printStackTrace();
- throw new ScriptException(e);
- } finally {
- cx.exit();
- }
- return ret;
- }
-
-
- //package-private helpers
-
- static Context enterContext() {
- // call this always so that initializer of this class runs
- // and initializes custom wrap factory and class shutter.
- return Context.enter();
- }
-
- void setEngineFactory(ScriptEngineFactory fac) {
- factory = fac;
- }
-
- Object[] wrapArguments(Object[] args) {
- if (args == null) {
- return Context.emptyArgs;
- }
- Object[] res = new Object[args.length];
- for (int i = 0; i < res.length; i++) {
- res[i] = Context.javaToJS(args[i], topLevel);
- }
- return res;
- }
-
- Object unwrapReturnValue(Object result) {
- if (result instanceof Wrapper) {
- result = ( (Wrapper) result).unwrap();
- }
-
- return result instanceof Undefined ? null : result;
- }
-
- /*
- public static void main(String[] args) throws Exception {
- if (args.length == 0) {
- System.out.println("No file specified");
- return;
- }
-
- InputStreamReader r = new InputStreamReader(new FileInputStream(args[0]));
- ScriptEngine engine = new RhinoScriptEngine();
-
- engine.put("x", "y");
- engine.put(ScriptEngine.FILENAME, args[0]);
- engine.eval(r);
- System.out.println(engine.get("x"));
- }
- */
-}