/**
* Invoke a script from the command line.
*
* @param scriptResource the script resource of path
* @param scriptArgs an array of command line arguments
* @return the return value
* @throws IOException an I/O related error occurred
* @throws JavaScriptException the script threw an error during compilation or execution
*/
public Object runScript(Object scriptResource, String... scriptArgs)
throws IOException, JavaScriptException {
Resource resource;
if (scriptResource instanceof Resource) {
resource = (Resource) scriptResource;
} else if (scriptResource instanceof String) {
resource = findResource((String) scriptResource, null, null);
} else {
throw new IOException("Unsupported script resource: " + scriptResource);
}
if (!resource.exists()) {
throw new FileNotFoundException(scriptResource.toString());
}
Context cx = contextFactory.enterContext();
try {
Object retval;
Map<Trackable, ReloadableScript> scripts = getScriptCache(cx);
commandLineArgs = Arrays.asList(scriptArgs);
ReloadableScript script = new ReloadableScript(resource, this);
scripts.put(resource, script);
mainScope = new ModuleScope(resource.getModuleName(), resource, globalScope, mainWorker);
retval = mainWorker.evaluateScript(cx, script, mainScope);
mainScope.updateExports();
return retval instanceof Wrapper ? ((Wrapper) retval).unwrap() : retval;
} finally {
Context.exit();
}
}
Singleton getSingleton(Singleton singleton) {
synchronized (singletons) {
Singleton st = singletons.get(singleton);
if (st == null) {
st = singleton;
singletons.put(singleton, singleton);
}
return st;
}
}
/**
* Resolves a type name to a script file within our script directory and returns a Scriptable
* evaluated to the file.
*
* @param moduleName the name of the module to load
* @param localPath the path of the resource issuing this call
* @return The raw compiled script for the module
* @throws JavaScriptException if an error occurred evaluating the script file
* @throws IOException if an error occurred reading the script file
*/
public ReloadableScript getScript(String moduleName, Repository localPath)
throws JavaScriptException, IOException {
ReloadableScript script;
Resource source = findResource(moduleName, loaders, localPath);
if (!source.exists()) {
source = loadPackage(moduleName, localPath);
if (!source.exists()) {
source = findResource(moduleName, null, localPath);
}
}
Context cx = Context.getCurrentContext();
Map<Trackable, ReloadableScript> scripts = getScriptCache(cx);
if (scripts.containsKey(source)) {
script = scripts.get(source);
} else {
script = new ReloadableScript(source, this);
if (source.exists()) {
scripts.put(source, script);
}
}
return script;
}
/**
* Create a RhinoEngine with the given configuration. If <code>globals</code> is not null, its
* contents are added as properties on the global object.
*
* @param config the configuration used to initialize the engine.
* @param globals an optional map of global properties
* @throws Exception if the engine can't be created
*/
public RhinoEngine(RingoConfig config, Map<String, Object> globals) throws Exception {
this.config = config;
workers = new LinkedBlockingDeque<RingoWorker>();
currentWorker = new ThreadLocal<RingoWorker>();
mainWorker = new RingoWorker(this);
compiledScripts = new ConcurrentHashMap<Trackable, ReloadableScript>();
interpretedScripts = new ConcurrentHashMap<Trackable, ReloadableScript>();
singletons = new HashMap<Singleton, Singleton>();
contextFactory = new RingoContextFactory(this, config);
repositories = config.getRepositories();
wrapFactory = config.getWrapFactory();
loaders =
new ModuleLoader[] {new JsModuleLoader(), new JsonModuleLoader(), new ClassModuleLoader()};
RingoDebugger debugger = null;
if (config.getDebug()) {
debugger = new RingoDebugger(config);
debugger.setScopeProvider(this);
debugger.attachTo(contextFactory);
debugger.setBreakOnExceptions(true);
}
// create and initialize global scope
Context cx = contextFactory.enterContext();
try {
boolean sealed = config.isSealed();
globalScope = new RingoGlobal(cx, this, sealed);
Class<Scriptable>[] classes = config.getHostClasses();
if (classes != null) {
for (Class<Scriptable> clazz : classes) {
defineHostClass(clazz);
}
}
ScriptableList.init(globalScope);
ScriptableMap.init(globalScope);
ScriptableObject.defineClass(globalScope, ScriptableWrapper.class);
ScriptableObject.defineClass(globalScope, ModuleObject.class);
if (globals != null) {
for (Map.Entry<String, Object> entry : globals.entrySet()) {
ScriptableObject.defineProperty(
globalScope, entry.getKey(), entry.getValue(), ScriptableObject.DONTENUM);
}
}
mainWorker.evaluateScript(cx, getScript("globals"), globalScope);
evaluateBootstrapScripts(cx);
if (sealed) {
globalScope.sealObject();
}
if (debugger != null) {
debugger.setBreak();
}
try {
Runtime.getRuntime()
.addShutdownHook(
new Thread() {
public void run() {
shutdown();
}
});
} catch (java.security.AccessControlException e) {
log.log(Level.WARNING, "Could not register shutdown hook due to security exception", e);
}
} finally {
Context.exit();
}
}