diff --git a/rhino-engine/src/main/java/org/mozilla/javascript/engine/RhinoScriptEngine.java b/rhino-engine/src/main/java/org/mozilla/javascript/engine/RhinoScriptEngine.java index 02c5399220..86e53cad1c 100644 --- a/rhino-engine/src/main/java/org/mozilla/javascript/engine/RhinoScriptEngine.java +++ b/rhino-engine/src/main/java/org/mozilla/javascript/engine/RhinoScriptEngine.java @@ -284,7 +284,7 @@ private void configureContext(Context cx) throws ScriptException { Object ol = get(OPTIMIZATION_LEVEL); if (ol != null) { // Handle backwardly-compatible "optimization level". - cx.setOptimizationLevel(parseInteger(ol)); + cx.impl().setOptimizationLevel(parseInteger(ol)); } Object interpreted = get(INTERPRETED_MODE); if (interpreted != null) { diff --git a/rhino/src/main/java/org/mozilla/javascript/BaseFunction.java b/rhino/src/main/java/org/mozilla/javascript/BaseFunction.java index 97a41bb0f8..83db56b453 100644 --- a/rhino/src/main/java/org/mozilla/javascript/BaseFunction.java +++ b/rhino/src/main/java/org/mozilla/javascript/BaseFunction.java @@ -420,15 +420,15 @@ private static Scriptable js_gen_constructorCall( private static Scriptable js_constructor(Context cx, Scriptable scope, Object[] args) { if (cx.isStrictMode()) { // Disable strict mode forcefully, and restore it after the call - NativeCall activation = cx.currentActivationCall; - boolean strictMode = cx.isTopLevelStrict; + NativeCall activation = cx.impl().currentActivationCall; + boolean strictMode = cx.impl().isTopLevelStrict; try { - cx.currentActivationCall = null; - cx.isTopLevelStrict = false; + cx.impl().currentActivationCall = null; + cx.impl().isTopLevelStrict = false; return jsConstructor(cx, scope, args, false); } finally { - cx.isTopLevelStrict = strictMode; - cx.currentActivationCall = activation; + cx.impl().isTopLevelStrict = strictMode; + cx.impl().currentActivationCall = activation; } } else { return jsConstructor(cx, scope, args, false); @@ -443,15 +443,15 @@ private static Scriptable js_constructorCall( private static Scriptable js_gen_constructor(Context cx, Scriptable scope, Object[] args) { if (cx.isStrictMode()) { // Disable strict mode forcefully, and restore it after the call - NativeCall activation = cx.currentActivationCall; - boolean strictMode = cx.isTopLevelStrict; + NativeCall activation = cx.impl().currentActivationCall; + boolean strictMode = cx.impl().isTopLevelStrict; try { - cx.currentActivationCall = null; - cx.isTopLevelStrict = false; + cx.impl().currentActivationCall = null; + cx.impl().isTopLevelStrict = false; return jsConstructor(cx, scope, args, true); } finally { - cx.isTopLevelStrict = strictMode; - cx.currentActivationCall = activation; + cx.impl().isTopLevelStrict = strictMode; + cx.impl().currentActivationCall = activation; } } else { return jsConstructor(cx, scope, args, true); @@ -704,7 +704,7 @@ private static Scriptable jsConstructor( String source = sourceBuf.toString(); int[] linep = new int[1]; - String filename = Context.getSourcePositionFromStack(linep); + String filename = ContextImpl.getSourcePositionFromStack(linep); if (filename == null) { filename = ""; linep[0] = 1; @@ -717,14 +717,14 @@ private static Scriptable jsConstructor( ErrorReporter reporter; reporter = DefaultErrorReporter.forEval(cx.getErrorReporter()); - Evaluator evaluator = Context.createInterpreter(); + Evaluator evaluator = ContextImpl.createInterpreter(); if (evaluator == null) { throw new JavaScriptException("Interpreter not present", filename, linep[0]); } // Compile with explicit interpreter instance to force interpreter // mode. - return cx.compileFunction(global, source, evaluator, reporter, sourceURI, 1, null); + return cx.impl().compileFunction(global, source, evaluator, reporter, sourceURI, 1, null); } public void setHomeObject(Scriptable homeObject) { diff --git a/rhino/src/main/java/org/mozilla/javascript/CompilerEnvirons.java b/rhino/src/main/java/org/mozilla/javascript/CompilerEnvirons.java index 485b97426f..6ce3577474 100644 --- a/rhino/src/main/java/org/mozilla/javascript/CompilerEnvirons.java +++ b/rhino/src/main/java/org/mozilla/javascript/CompilerEnvirons.java @@ -38,7 +38,7 @@ public void initFromContext(Context cx) { interpretedMode = cx.isInterpretedMode(); generatingSource = cx.isGeneratingSource(); - activationNames = cx.activationNames; + activationNames = cx.impl().activationNames; // Observer code generation in compiled code : generateObserverCount = cx.isGenerateObserverCount(); @@ -116,7 +116,7 @@ public final boolean isInterpretedMode() { @Deprecated @SuppressWarnings("deprecation") public void setOptimizationLevel(int level) { - Context.checkOptimizationLevel(level); + ContextImpl.checkOptimizationLevel(level); interpretedMode = (level < 0); } diff --git a/rhino/src/main/java/org/mozilla/javascript/Context.java b/rhino/src/main/java/org/mozilla/javascript/Context.java index 78caddb5f5..3fcfc447ac 100644 --- a/rhino/src/main/java/org/mozilla/javascript/Context.java +++ b/rhino/src/main/java/org/mozilla/javascript/Context.java @@ -8,7 +8,6 @@ package org.mozilla.javascript; -import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.Closeable; import java.io.IOException; @@ -17,25 +16,14 @@ import java.io.StringWriter; import java.io.Writer; import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import java.util.ArrayDeque; -import java.util.EnumSet; -import java.util.HashMap; -import java.util.HashSet; import java.util.Locale; -import java.util.Map; -import java.util.Set; import java.util.TimeZone; import java.util.function.Consumer; import java.util.function.UnaryOperator; -import org.mozilla.classfile.ClassFileWriter.ClassFileFormatException; -import org.mozilla.javascript.ast.AstRoot; -import org.mozilla.javascript.ast.ScriptNode; import org.mozilla.javascript.debug.DebuggableScript; import org.mozilla.javascript.debug.Debugger; import org.mozilla.javascript.lc.type.TypeInfo; import org.mozilla.javascript.lc.type.TypeInfoFactory; -import org.mozilla.javascript.xml.XMLLib; /** * This class represents the runtime context of an executing script. @@ -43,7 +31,7 @@ *

Before executing a script, an instance of Context must be created and associated with the * thread that will be executing the script. The Context will be used to store information about the * executing of the script such as the call stack. Contexts are associated with the current thread - * using the {@link #call(ContextAction)} or {@link #enter()} methods. + * using the {@link ContextFactory#call(ContextAction)} or {@link #enter()} methods. * *

Different forms of script execution are supported. Scripts may be evaluated from the source * directly, or first compiled and then later executed. Interactive execution is also supported. @@ -55,7 +43,7 @@ * @author Norris Boyd * @author Brendan Eich */ -public class Context implements Closeable { +public interface Context extends Closeable { /** * Language versions. * @@ -72,7 +60,7 @@ public class Context implements Closeable { *

Please use one of the other constants like {@link #VERSION_ECMASCRIPT} to get support for * recent language features. */ - public static final int VERSION_UNKNOWN = -1; + int VERSION_UNKNOWN = -1; /** * The default version for older versions of Rhino. @@ -85,13 +73,13 @@ public class Context implements Closeable { *

Please use one of the other constants like {@link #VERSION_ECMASCRIPT} to get support for * recent language features. */ - public static final int VERSION_DEFAULT = 0; + int VERSION_DEFAULT = 0; /** JavaScript 1.0 */ - public static final int VERSION_1_0 = 100; + int VERSION_1_0 = 100; /** JavaScript 1.1 */ - public static final int VERSION_1_1 = 110; + int VERSION_1_1 = 110; /** JavaScript 1.2 */ public static final int VERSION_1_2 = 120; @@ -388,68 +376,6 @@ public class Context implements Closeable { public static final String languageVersionProperty = "language version"; public static final String errorReporterProperty = "error reporter"; - private static final RegExpLoader regExpLoader = - ScriptRuntime.loadOneServiceImplementation(RegExpLoader.class); - - /** - * Convenient value to use as zero-length array of objects. - * - * @deprecated As of 1.8.1, use {@link ScriptRuntime#emptyArgs} instead. - */ - @Deprecated public static final Object[] emptyArgs = ScriptRuntime.emptyArgs; - - /** - * Stores the current context per thread. - * - *

Note: former methods (VMBridge) have used an Object[] for performance reasons. This seems - * to be outdated. ThreadLocal.get/set gives better performance. (But do not use - * ThreadLocal.remove.) See ContextThreadLocalBenchmark - */ - private static final ThreadLocal currentContext = new ThreadLocal<>(); - - /** - * Creates a new Context. The context will be associated with the {@link - * ContextFactory#getGlobal() global context factory}. By default, the new context will run in - * compiled mode and use the {@link #VERSION_ES6} language version, which supports features as - * defined in the most recent ECMAScript standard. This default behavior can be changed by - * overriding the ContextFactory class and installing the new implementation as the global - * ContextFactory. - * - *

Note that the Context must be associated with a thread before it can be used to execute a - * script. - * - * @deprecated this constructor is deprecated because it creates a dependency on a static - * singleton context factory. Use {@link ContextFactory#enter()} or {@link - * ContextFactory#call(ContextAction)} instead. If you subclass this class, consider using - * {@link #Context(ContextFactory)} constructor instead in the subclasses' constructors. - */ - @Deprecated - public Context() { - this(ContextFactory.getGlobal()); - } - - /** - * Creates a new context. Provided as a preferred super constructor for subclasses in place of - * the deprecated default public constructor. By default, the new context will run in compiled - * mode and use the {@link #VERSION_ES6} language version, which supports features as defined in - * the most recent ECMAScript standard. This default behavior can be changed by overriding the - * ContextFactory class - * - * @param factory the context factory associated with this context (most likely, the one that - * created the context). Can not be null. The context features are inherited from the - * factory, and the context will also otherwise use its factory's services. - * @throws IllegalArgumentException if factory parameter is null. - */ - protected Context(ContextFactory factory) { - if (factory == null) { - throw new IllegalArgumentException("factory == null"); - } - this.factory = factory; - version = VERSION_ES6; - interpretedMode = codegenClass == null; - maximumInterpreterStackDepth = Integer.MAX_VALUE; - } - /** * Get the current Context. * @@ -461,8 +387,8 @@ protected Context(ContextFactory factory) { * @see ContextFactory#enterContext() * @see ContextFactory#call(ContextAction) */ - public static Context getCurrentContext() { - return currentContext.get(); + static Context getCurrentContext() { + return ContextImpl.getCurrentContext(); } /** @@ -471,56 +397,10 @@ public static Context getCurrentContext() { * @return a Context associated with the current thread * @see #getCurrentContext() * @see #exit() - * @see #call(ContextAction) - */ - public static Context enter() { - return enter(null, ContextFactory.getGlobal()); - } - - /** - * Get a Context associated with the current thread, using the given Context if need be. - * - *

The same as enter() except that cx is associated with the - * current thread and returned if the current thread has no associated context and cx - * is not associated with any other thread. - * - * @param cx a Context to associate with the thread if possible - * @return a Context associated with the current thread - * @deprecated use {@link ContextFactory#enterContext(Context)} instead as this method relies on - * usage of a static singleton "global" ContextFactory. - * @see ContextFactory#enterContext(Context) * @see ContextFactory#call(ContextAction) */ - @Deprecated - public static Context enter(Context cx) { - return enter(cx, ContextFactory.getGlobal()); - } - - static final Context enter(Context cx, ContextFactory factory) { - Context old = currentContext.get(); - if (old != null) { - cx = old; - } else { - if (cx == null) { - cx = factory.makeContext(); - if (cx.enterCount != 0) { - throw new IllegalStateException( - "factory.makeContext() returned Context instance already associated with some thread"); - } - factory.onContextCreated(cx); - if (factory.isSealed() && !cx.isSealed()) { - cx.seal(null); - } - } else { - if (cx.enterCount != 0) { - throw new IllegalStateException( - "can not use Context instance already associated with some thread"); - } - } - currentContext.set(cx); - } - ++cx.enterCount; - return cx; + static Context enter() { + return ContextImpl.enter(null, ContextFactory.getGlobal()); } /** @@ -533,49 +413,12 @@ static final Context enter(Context cx, ContextFactory factory) { * * @see ContextFactory#enterContext() */ - public static void exit() { - Context cx = currentContext.get(); - if (cx == null) { - throw new IllegalStateException("Calling Context.exit without previous Context.enter"); - } - if (cx.enterCount < 1) Kit.codeBug(); - if (--cx.enterCount == 0) { - releaseContext(cx); - } + static void exit() { + ContextImpl.exit(); } @Override - public void close() { - if (enterCount < 1) Kit.codeBug(); - if (--enterCount == 0) { - assert (currentContext.get() == this) - : "currentContext: " + currentContext.get() + ", this: " + this; - releaseContext(this); - } - } - - private static void releaseContext(Context cx) { - // do not use contextLocal.remove() here, as this might be much slower, when the same thread - // creates a new context. See ContextThreadLocalBenchmark. - currentContext.set(null); - cx.factory.onContextReleased(cx); - } - - /** - * Call {@link ContextAction#run(Context cx)} using the Context instance associated with the - * current thread. If no Context is associated with the thread, then - * ContextFactory.getGlobal().makeContext() will be called to construct new Context - * instance. The instance will be temporary associated with the thread during call to {@link - * ContextAction#run(Context)}. - * - * @deprecated use {@link ContextFactory#call(ContextAction)} instead as this method relies on - * usage of a static singleton "global" ContextFactory. - * @return The result of {@link ContextAction#run(Context)}. - */ - @Deprecated - public static T call(ContextAction action) { - return call(ContextFactory.getGlobal(), action); - } + void close(); /** * Call {@link Callable#call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args)} @@ -590,7 +433,7 @@ public static T call(ContextAction action) { * * @see ContextFactory#call(ContextAction) */ - public static Object call( + static Object call( ContextFactory factory, final Callable callable, final Scriptable scope, @@ -604,51 +447,13 @@ public static Object call( /** The method implements {@link ContextFactory#call(ContextAction)} logic. */ static T call(ContextFactory factory, ContextAction action) { - try (Context cx = enter(null, factory)) { + try (Context cx = ContextImpl.enter(null, factory)) { return action.run(cx); } } - /** - * @deprecated - * @see ContextFactory#addListener(org.mozilla.javascript.ContextFactory.Listener) - * @see ContextFactory#getGlobal() - */ - @Deprecated - public static void addContextListener(ContextListener listener) { - // Special workaround for the debugger - String DBG = "org.mozilla.javascript.tools.debugger.Main"; - if (DBG.equals(listener.getClass().getName())) { - Class cl = listener.getClass(); - Class factoryClass = Kit.classOrNull("org.mozilla.javascript.ContextFactory"); - Class[] sig = {factoryClass}; - Object[] args = {ContextFactory.getGlobal()}; - try { - Method m = cl.getMethod("attachTo", sig); - m.invoke(listener, args); - } catch (Exception ex) { - throw new RuntimeException(ex); - } - return; - } - - ContextFactory.getGlobal().addListener(listener); - } - - /** - * @deprecated - * @see ContextFactory#removeListener(org.mozilla.javascript.ContextFactory.Listener) - * @see ContextFactory#getGlobal() - */ - @Deprecated - public static void removeContextListener(ContextListener listener) { - ContextFactory.getGlobal().addListener(listener); - } - /** Return {@link ContextFactory} instance used to create this Context. */ - public final ContextFactory getFactory() { - return factory; - } + ContextFactory getFactory(); /** * Checks if this is a sealed Context. A sealed Context instance does not allow to modify any of @@ -656,9 +461,7 @@ public final ContextFactory getFactory() { * * @see #seal(Object sealKey) */ - public final boolean isSealed() { - return sealed; - } + boolean isSealed(); /** * Seal this Context object so any attempt to modify any of its properties including calling @@ -670,11 +473,7 @@ public final boolean isSealed() { * @see #isSealed() * @see #unseal(Object) */ - public final void seal(Object sealKey) { - if (sealed) onSealedMutation(); - sealed = true; - this.sealKey = sealKey; - } + void seal(Object sealKey); /** * Unseal previously sealed Context object. The sealKey argument should not be null @@ -684,13 +483,7 @@ public final void seal(Object sealKey) { * @see #isSealed() * @see #seal(Object sealKey) */ - public final void unseal(Object sealKey) { - if (sealKey == null) throw new IllegalArgumentException(); - if (this.sealKey != sealKey) throw new IllegalArgumentException(); - if (!sealed) throw new IllegalStateException(); - sealed = false; - this.sealKey = null; - } + void unseal(Object sealKey); @SuppressWarnings("DoNotCallSuggester") static void onSealedMutation() { @@ -705,9 +498,7 @@ static void onSealedMutation() { * * @return an integer that is one of VERSION_1_0, VERSION_1_1, etc. */ - public final int getLanguageVersion() { - return version; - } + int getLanguageVersion(); /** * Set the language version. @@ -729,21 +520,9 @@ public final int getLanguageVersion() { * * @param version the version as specified by VERSION_1_0, VERSION_1_1, etc. */ - public void setLanguageVersion(int version) { - if (sealed) onSealedMutation(); - checkLanguageVersion(version); - Object listeners = propertyListeners; - if (listeners != null && version != this.version) { - firePropertyChangeImpl( - listeners, - languageVersionProperty, - Integer.valueOf(this.version), - Integer.valueOf(version)); - } - this.version = version; - } + void setLanguageVersion(int version); - public static boolean isValidLanguageVersion(int version) { + static boolean isValidLanguageVersion(int version) { switch (version) { case VERSION_DEFAULT: case VERSION_1_0: @@ -762,7 +541,7 @@ public static boolean isValidLanguageVersion(int version) { return false; } - public static void checkLanguageVersion(int version) { + static void checkLanguageVersion(int version) { if (isValidLanguageVersion(version)) { return; } @@ -784,21 +563,14 @@ public static void checkLanguageVersion(int version) { * * @return a string that encodes the product, language version, release number, and date. */ - public final String getImplementationVersion() { - return ImplementationVersion.get(); - } + String getImplementationVersion(); /** * Get the current error reporter. * * @see org.mozilla.javascript.ErrorReporter */ - public final ErrorReporter getErrorReporter() { - if (errorReporter == null) { - return DefaultErrorReporter.instance; - } - return errorReporter; - } + ErrorReporter getErrorReporter(); /** * Change the current error reporter. @@ -806,32 +578,14 @@ public final ErrorReporter getErrorReporter() { * @return the previous error reporter * @see org.mozilla.javascript.ErrorReporter */ - public final ErrorReporter setErrorReporter(ErrorReporter reporter) { - if (sealed) onSealedMutation(); - if (reporter == null) throw new IllegalArgumentException(); - ErrorReporter old = getErrorReporter(); - if (reporter == old) { - return old; - } - Object listeners = propertyListeners; - if (listeners != null) { - firePropertyChangeImpl( - listeners, errorReporterProperty, - old, reporter); - } - this.errorReporter = reporter; - return old; - } + ErrorReporter setErrorReporter(ErrorReporter reporter); /** * Get the current locale. Returns the default locale if none has been set. * * @see java.util.Locale */ - public final Locale getLocale() { - if (locale == null) locale = Locale.getDefault(); - return locale; - } + Locale getLocale(); /** * Set the current locale. @@ -839,12 +593,7 @@ public final Locale getLocale() { * @return the old value of the locale * @see java.util.Locale */ - public final Locale setLocale(Locale loc) { - if (sealed) onSealedMutation(); - Locale result = locale; - locale = loc; - return result; - } + Locale setLocale(Locale loc); /** * Get the current timezone. Returns the default timezone if none has been set. @@ -852,22 +601,14 @@ public final Locale setLocale(Locale loc) { * @return the old value of the timezone * @see java.util.TimeZone */ - public final TimeZone getTimeZone() { - if (timezone == null) timezone = TimeZone.getDefault(); - return timezone; - } + TimeZone getTimeZone(); /** * Set the current timezone. * * @see java.util.TimeZone */ - public final TimeZone setTimeZone(TimeZone tz) { - if (sealed) onSealedMutation(); - TimeZone result = timezone; - timezone = tz; - return result; - } + TimeZone setTimeZone(TimeZone tz); /** * Register an object to receive notifications when a bound property has changed @@ -876,10 +617,7 @@ public final TimeZone setTimeZone(TimeZone tz) { * @see #removePropertyChangeListener(java.beans.PropertyChangeListener) * @param l the listener */ - public final void addPropertyChangeListener(PropertyChangeListener l) { - if (sealed) onSealedMutation(); - propertyListeners = Kit.addListener(propertyListeners, l); - } + void addPropertyChangeListener(PropertyChangeListener l); /** * Remove an object from the list of objects registered to receive notification of changes to a @@ -889,40 +627,7 @@ public final void addPropertyChangeListener(PropertyChangeListener l) { * @see #addPropertyChangeListener(java.beans.PropertyChangeListener) * @param l the listener */ - public final void removePropertyChangeListener(PropertyChangeListener l) { - if (sealed) onSealedMutation(); - propertyListeners = Kit.removeListener(propertyListeners, l); - } - - /** - * Notify any registered listeners that a bounded property has changed - * - * @see #addPropertyChangeListener(java.beans.PropertyChangeListener) - * @see #removePropertyChangeListener(java.beans.PropertyChangeListener) - * @see java.beans.PropertyChangeListener - * @see java.beans.PropertyChangeEvent - * @param property the bound property - * @param oldValue the old value - * @param newValue the new value - */ - final void firePropertyChange(String property, Object oldValue, Object newValue) { - Object listeners = propertyListeners; - if (listeners != null) { - firePropertyChangeImpl(listeners, property, oldValue, newValue); - } - } - - private void firePropertyChangeImpl( - Object listeners, String property, Object oldValue, Object newValue) { - for (int i = 0; ; ++i) { - Object l = Kit.getListener(listeners, i); - if (l == null) break; - if (l instanceof PropertyChangeListener) { - PropertyChangeListener pcl = (PropertyChangeListener) l; - pcl.propertyChange(new PropertyChangeEvent(this, property, oldValue, newValue)); - } - } - } + void removePropertyChangeListener(PropertyChangeListener l); /** * Report a warning using the error reporter for the current thread. @@ -934,7 +639,7 @@ private void firePropertyChangeImpl( * @param lineOffset the offset into lineSource where problem was detected * @see org.mozilla.javascript.ErrorReporter */ - public static void reportWarning( + static void reportWarning( String message, String sourceName, int lineno, String lineSource, int lineOffset) { Context cx = Context.getContext(); if (cx.hasFeature(FEATURE_WARNING_AS_ERROR)) @@ -948,15 +653,15 @@ public static void reportWarning( * @param message the warning message to report * @see org.mozilla.javascript.ErrorReporter */ - public static void reportWarning(String message) { + static void reportWarning(String message) { int[] linep = {0}; - String filename = getSourcePositionFromStack(linep); + String filename = ContextImpl.getSourcePositionFromStack(linep); Context.reportWarning(message, filename, linep[0], null, 0); } - public static void reportWarning(String message, Throwable t) { + static void reportWarning(String message, Throwable t) { int[] linep = {0}; - String filename = getSourcePositionFromStack(linep); + String filename = ContextImpl.getSourcePositionFromStack(linep); Writer sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); pw.println(message); @@ -975,7 +680,7 @@ public static void reportWarning(String message, Throwable t) { * @param lineOffset the offset into lineSource where problem was detected * @see org.mozilla.javascript.ErrorReporter */ - public static void reportError( + static void reportError( String message, String sourceName, int lineno, String lineSource, int lineOffset) { Context cx = getCurrentContext(); if (cx != null) { @@ -991,9 +696,9 @@ public static void reportError( * @param message the error message to report * @see org.mozilla.javascript.ErrorReporter */ - public static void reportError(String message) { + static void reportError(String message) { int[] linep = {0}; - String filename = getSourcePositionFromStack(linep); + String filename = ContextImpl.getSourcePositionFromStack(linep); Context.reportError(message, filename, linep[0], null, 0); } @@ -1008,7 +713,7 @@ public static void reportError(String message) { * @return a runtime exception that will be thrown to terminate the execution of the script * @see org.mozilla.javascript.ErrorReporter */ - public static EvaluatorException reportRuntimeError( + static EvaluatorException reportRuntimeError( String message, String sourceName, int lineno, String lineSource, int lineOffset) { Context cx = getCurrentContext(); if (cx != null) { @@ -1023,62 +728,15 @@ static EvaluatorException reportRuntimeErrorById(String messageId, Object... arg return reportRuntimeError(msg); } - /** - * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead - */ - @Deprecated - static EvaluatorException reportRuntimeError0(String messageId) { - String msg = ScriptRuntime.getMessageById(messageId); - return reportRuntimeError(msg); - } - - /** - * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead - */ - @Deprecated - static EvaluatorException reportRuntimeError1(String messageId, Object arg1) { - String msg = ScriptRuntime.getMessageById(messageId, arg1); - return reportRuntimeError(msg); - } - - /** - * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead - */ - @Deprecated - static EvaluatorException reportRuntimeError2(String messageId, Object arg1, Object arg2) { - String msg = ScriptRuntime.getMessageById(messageId, arg1, arg2); - return reportRuntimeError(msg); - } - - /** - * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead - */ - @Deprecated - static EvaluatorException reportRuntimeError3( - String messageId, Object arg1, Object arg2, Object arg3) { - String msg = ScriptRuntime.getMessageById(messageId, arg1, arg2, arg3); - return reportRuntimeError(msg); - } - - /** - * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead - */ - @Deprecated - static EvaluatorException reportRuntimeError4( - String messageId, Object arg1, Object arg2, Object arg3, Object arg4) { - String msg = ScriptRuntime.getMessageById(messageId, arg1, arg2, arg3, arg4); - return reportRuntimeError(msg); - } - /** * Report a runtime error using the error reporter for the current thread. * * @param message the error message to report * @see org.mozilla.javascript.ErrorReporter */ - public static EvaluatorException reportRuntimeError(String message) { + static EvaluatorException reportRuntimeError(String message) { int[] linep = {0}; - String filename = getSourcePositionFromStack(linep); + String filename = ContextImpl.getSourcePositionFromStack(linep); return Context.reportRuntimeError(message, filename, linep[0], null, 0); } @@ -1095,9 +753,7 @@ public static EvaluatorException reportRuntimeError(String message) { * * @return the initialized scope */ - public final ScriptableObject initStandardObjects() { - return initStandardObjects(null, false); - } + ScriptableObject initStandardObjects(); /** * Initialize the standard objects, leaving out those that offer access directly to Java @@ -1118,9 +774,7 @@ public final ScriptableObject initStandardObjects() { * * @return the initialized scope */ - public final ScriptableObject initSafeStandardObjects() { - return initSafeStandardObjects(null, false); - } + ScriptableObject initSafeStandardObjects(); /** * Initialize the standard objects. @@ -1138,9 +792,7 @@ public final ScriptableObject initSafeStandardObjects() { * @return the initialized scope. The method returns the value of the scope argument if it is * not null or newly allocated scope object which is an instance {@link ScriptableObject}. */ - public final Scriptable initStandardObjects(ScriptableObject scope) { - return initStandardObjects(scope, false); - } + Scriptable initStandardObjects(ScriptableObject scope); /** * Initialize the standard objects, leaving out those that offer access directly to Java @@ -1164,9 +816,7 @@ public final Scriptable initStandardObjects(ScriptableObject scope) { * @return the initialized scope. The method returns the value of the scope argument if it is * not null or newly allocated scope object which is an instance {@link ScriptableObject}. */ - public final Scriptable initSafeStandardObjects(ScriptableObject scope) { - return initSafeStandardObjects(scope, false); - } + Scriptable initSafeStandardObjects(ScriptableObject scope); /** * Initialize the standard objects. @@ -1191,9 +841,7 @@ public final Scriptable initSafeStandardObjects(ScriptableObject scope) { * not null or newly allocated scope object. * @since 1.4R3 */ - public ScriptableObject initStandardObjects(ScriptableObject scope, boolean sealed) { - return ScriptRuntime.initStandardObjects(this, scope, sealed); - } + ScriptableObject initStandardObjects(ScriptableObject scope, boolean sealed); /** * Initialize the standard objects, leaving out those that offer access directly to Java @@ -1224,12 +872,10 @@ public ScriptableObject initStandardObjects(ScriptableObject scope, boolean seal * not null or newly allocated scope object. * @since 1.7.6 */ - public ScriptableObject initSafeStandardObjects(ScriptableObject scope, boolean sealed) { - return ScriptRuntime.initSafeStandardObjects(this, scope, sealed); - } + ScriptableObject initSafeStandardObjects(ScriptableObject scope, boolean sealed); /** Get the singleton object that represents the JavaScript Undefined value. */ - public static Object getUndefinedValue() { + static Object getUndefinedValue() { return Undefined.instance; } @@ -1249,14 +895,8 @@ public static Object getUndefinedValue() { * @return the result of evaluating the string * @see org.mozilla.javascript.SecurityController */ - public final Object evaluateString( - Scriptable scope, String source, String sourceName, int lineno, Object securityDomain) { - Script script = compileString(source, sourceName, lineno, securityDomain); - if (script != null) { - return script.exec(this, scope, scope); - } - return null; - } + Object evaluateString( + Scriptable scope, String source, String sourceName, int lineno, Object securityDomain); /** * Evaluate a reader as JavaScript source. @@ -1273,15 +913,9 @@ public final Object evaluateString( * @return the result of evaluating the source * @exception IOException if an IOException was generated by the Reader */ - public final Object evaluateReader( + Object evaluateReader( Scriptable scope, Reader in, String sourceName, int lineno, Object securityDomain) - throws IOException { - Script script = compileReader(in, sourceName, lineno, securityDomain); - if (script != null) { - return script.exec(this, scope, scope); - } - return null; - } + throws IOException; /** * Execute script that may pause execution by capturing a continuation. Caller must be prepared @@ -1295,18 +929,8 @@ public final Object evaluateReader( * #captureContinuation()} * @since 1.7 Release 2 */ - public Object executeScriptWithContinuations(Script script, Scriptable scope) - throws ContinuationPending { - if (!(script instanceof InterpretedFunction) - || !((InterpretedFunction) script).isScript()) { - // Can only be applied to scripts - throw new IllegalArgumentException( - "Script argument was not" - + " a script or was not created by interpreted mode "); - } - return callFunctionWithContinuations( - (InterpretedFunction) script, scope, ScriptRuntime.emptyArgs); - } + Object executeScriptWithContinuations(Script script, Scriptable scope) + throws ContinuationPending; /** * Call function that may pause execution by capturing a continuation. Caller must be prepared @@ -1321,23 +945,8 @@ public Object executeScriptWithContinuations(Script script, Scriptable scope) * #captureContinuation()} * @since 1.7 Release 2 */ - public Object callFunctionWithContinuations(Callable function, Scriptable scope, Object[] args) - throws ContinuationPending { - if (!(function instanceof InterpretedFunction)) { - // Can only be applied to scripts - throw new IllegalArgumentException( - "Function argument was not" + " created by interpreted mode "); - } - if (ScriptRuntime.hasTopCall(this)) { - throw new IllegalStateException( - "Cannot have any pending top " - + "calls when executing a script with continuations"); - } - // Annotate so we can check later to ensure no java code in - // intervening frames - isContinuationsTopCall = true; - return ScriptRuntime.doTopCall(function, this, scope, scope, args, isTopLevelStrict); - } + Object callFunctionWithContinuations(Callable function, Scriptable scope, Object[] args) + throws ContinuationPending; /** * Capture a continuation from the current execution. The execution must have been started via a @@ -1350,9 +959,7 @@ public Object callFunctionWithContinuations(Callable function, Scriptable scope, * @return A ContinuationPending exception that must be thrown * @since 1.7 Release 2 */ - public ContinuationPending captureContinuation() { - return new ContinuationPending(Interpreter.captureContinuation(this)); - } + ContinuationPending captureContinuation(); /** * Restarts execution of the JavaScript suspended at the call to {@link #captureContinuation()}. @@ -1367,12 +974,8 @@ public ContinuationPending captureContinuation() { * @throws ContinuationPending if another continuation is captured before the code terminates * @since 1.7 Release 2 */ - public Object resumeContinuation(Object continuation, Scriptable scope, Object functionResult) - throws ContinuationPending { - Object[] args = {functionResult}; - return Interpreter.restartContinuation( - (org.mozilla.javascript.NativeContinuation) continuation, this, scope, args); - } + Object resumeContinuation(Object continuation, Scriptable scope, Object functionResult) + throws ContinuationPending; /** * Check whether a string is ready to be compiled. @@ -1388,35 +991,7 @@ public Object resumeContinuation(Object continuation, Scriptable scope, Object f * @return whether the source is ready for compilation * @since 1.4 Release 2 */ - public final boolean stringIsCompilableUnit(String source) { - boolean errorseen = false; - CompilerEnvirons compilerEnv = new CompilerEnvirons(); - compilerEnv.initFromContext(this); - // no source name or source text manager, because we're just - // going to throw away the result. - compilerEnv.setGeneratingSource(false); - Parser p = new Parser(compilerEnv, DefaultErrorReporter.instance); - try { - p.parse(source, null, 1); - } catch (EvaluatorException ee) { - errorseen = true; - } - // Return false only if an error occurred as a result of reading past - // the end of the file, i.e. if the source could be fixed by - // appending more source. - return !(errorseen && p.eof()); - } - - /** - * @deprecated - * @see #compileReader(Reader in, String sourceName, int lineno, Object securityDomain) - */ - @Deprecated - public final Script compileReader( - Scriptable scope, Reader in, String sourceName, int lineno, Object securityDomain) - throws IOException { - return compileReader(in, sourceName, lineno, securityDomain); - } + boolean stringIsCompilableUnit(String source); /** * Compiles the source in the given reader. @@ -1433,35 +1008,16 @@ public final Script compileReader( * @exception IOException if an IOException was generated by the Reader * @see org.mozilla.javascript.Script */ - public final Script compileReader( - Reader in, String sourceName, int lineno, Object securityDomain) throws IOException { - return compileReader(in, sourceName, lineno, securityDomain, null); - } + Script compileReader(Reader in, String sourceName, int lineno, Object securityDomain) + throws IOException; - public Script compileReader( + Script compileReader( Reader in, String sourceName, int lineno, Object securityDomain, Consumer compilerEnvironsProcessor) - throws IOException { - if (lineno < 0) { - // For compatibility IllegalArgumentException can not be thrown here - lineno = 0; - } - - return (Script) - compileImpl( - null, - Kit.readReader(in), - sourceName, - lineno, - securityDomain, - false, - null, - null, - compilerEnvironsProcessor); - } + throws IOException; /** * Compiles the source in the given string. @@ -1478,35 +1034,7 @@ public Script compileReader( * @return a script that may later be executed * @see org.mozilla.javascript.Script */ - public final Script compileString( - String source, String sourceName, int lineno, Object securityDomain) { - if (lineno < 0) { - // For compatibility IllegalArgumentException can not be thrown here - lineno = 0; - } - return compileString(source, null, null, sourceName, lineno, securityDomain, null); - } - - final Script compileString( - String source, - Evaluator compiler, - ErrorReporter compilationErrorReporter, - String sourceName, - int lineno, - Object securityDomain, - Consumer compilerEnvironsProcessor) { - return (Script) - compileImpl( - null, - source, - sourceName, - lineno, - securityDomain, - false, - compiler, - compilationErrorReporter, - compilerEnvironsProcessor); - } + Script compileString(String source, String sourceName, int lineno, Object securityDomain); /** * Compile a JavaScript function. @@ -1524,31 +1052,8 @@ final Script compileString( * @return a Function that may later be called * @see org.mozilla.javascript.Function */ - public final Function compileFunction( - Scriptable scope, String source, String sourceName, int lineno, Object securityDomain) { - return compileFunction(scope, source, null, null, sourceName, lineno, securityDomain); - } - - final Function compileFunction( - Scriptable scope, - String source, - Evaluator compiler, - ErrorReporter compilationErrorReporter, - String sourceName, - int lineno, - Object securityDomain) { - return (Function) - compileImpl( - scope, - source, - sourceName, - lineno, - securityDomain, - true, - compiler, - compilationErrorReporter, - null); - } + Function compileFunction( + Scriptable scope, String source, String sourceName, int lineno, Object securityDomain); /** * Decompile the script. @@ -1559,10 +1064,7 @@ final Function compileFunction( * @param indent the number of spaces to indent the result * @return a string representing the script source */ - public final String decompileScript(Script script, int indent) { - NativeFunction scriptImpl = (NativeFunction) script; - return scriptImpl.decompile(indent, EnumSet.noneOf(DecompilerFlag.class)); - } + String decompileScript(Script script, int indent); /** * Decompile a JavaScript Function. @@ -1575,12 +1077,7 @@ public final String decompileScript(Script script, int indent) { * @param indent the number of spaces to indent the result * @return a string representing the function source */ - public final String decompileFunction(Function fun, int indent) { - if (fun instanceof BaseFunction) - return ((BaseFunction) fun).decompile(indent, EnumSet.noneOf(DecompilerFlag.class)); - - return "function " + fun.getClassName() + "() {\n\t[native code]\n}\n"; - } + String decompileFunction(Function fun, int indent); /** * Decompile the body of a JavaScript Function. @@ -1594,14 +1091,7 @@ public final String decompileFunction(Function fun, int indent) { * @param indent the number of spaces to indent the result * @return a string representing the function body source. */ - public final String decompileFunctionBody(Function fun, int indent) { - if (fun instanceof BaseFunction) { - BaseFunction bf = (BaseFunction) fun; - return bf.decompile(indent, EnumSet.of(DecompilerFlag.ONLY_BODY)); - } - // ALERT: not sure what the right response here is. - return "[native code]\n"; - } + String decompileFunctionBody(Function fun, int indent); /** * Create a new JavaScript object. @@ -1611,11 +1101,7 @@ public final String decompileFunctionBody(Function fun, int indent) { * @param scope the scope to search for the constructor and to evaluate against * @return the new object */ - public Scriptable newObject(Scriptable scope) { - NativeObject result = new NativeObject(); - ScriptRuntime.setBuiltinProtoAndParent(result, scope, TopLevel.Builtins.Object); - return result; - } + Scriptable newObject(Scriptable scope); /** * Create a new JavaScript object by executing the named constructor. @@ -1626,9 +1112,7 @@ public Scriptable newObject(Scriptable scope) { * @param constructorName the name of the constructor to call * @return the new object */ - public Scriptable newObject(Scriptable scope, String constructorName) { - return newObject(scope, constructorName, ScriptRuntime.emptyArgs); - } + Scriptable newObject(Scriptable scope, String constructorName); /** * Creates a new JavaScript object by executing the named constructor. @@ -1650,9 +1134,7 @@ public Scriptable newObject(Scriptable scope, String constructorName) { * @param args the array of arguments for the constructor * @return the new object */ - public Scriptable newObject(Scriptable scope, String constructorName, Object[] args) { - return ScriptRuntime.newObject(this, scope, constructorName, args); - } + Scriptable newObject(Scriptable scope, String constructorName, Object[] args); /** * Create an array with a specified initial length. @@ -1662,11 +1144,7 @@ public Scriptable newObject(Scriptable scope, String constructorName, Object[] a * dynamically). * @return the new array object */ - public Scriptable newArray(Scriptable scope, int length) { - NativeArray result = new NativeArray(length); - ScriptRuntime.setBuiltinProtoAndParent(result, scope, TopLevel.Builtins.Array); - return result; - } + Scriptable newArray(Scriptable scope, int length); /** * Create an array with a set of initial elements. @@ -1676,13 +1154,7 @@ public Scriptable newArray(Scriptable scope, int length) { * JavaScript type and type of array should be exactly Object[], not SomeObjectSubclass[]. * @return the new array object. */ - public Scriptable newArray(Scriptable scope, Object[] elements) { - if (elements.getClass().getComponentType() != ScriptRuntime.ObjectClass) - throw new IllegalArgumentException(); - NativeArray result = new NativeArray(elements); - ScriptRuntime.setBuiltinProtoAndParent(result, scope, TopLevel.Builtins.Array); - return result; - } + Scriptable newArray(Scriptable scope, Object[] elements); /** * Get the elements of a JavaScript array. @@ -1698,9 +1170,7 @@ public Scriptable newArray(Scriptable scope, Object[] elements) { * @return a Java array of objects * @since 1.4 release 2 */ - public final Object[] getElements(Scriptable object) { - return ScriptRuntime.getArrayElements(object); - } + Object[] getElements(Scriptable object); /** * Convert the value to a JavaScript boolean value. @@ -1710,7 +1180,7 @@ public final Object[] getElements(Scriptable object) { * @param value a JavaScript value * @return the corresponding boolean value converted using the ECMA rules */ - public static boolean toBoolean(Object value) { + static boolean toBoolean(Object value) { return ScriptRuntime.toBoolean(value); } @@ -1724,7 +1194,7 @@ public static boolean toBoolean(Object value) { * @param value a JavaScript value * @return the corresponding double value converted using the ECMA rules */ - public static double toNumber(Object value) { + static double toNumber(Object value) { return ScriptRuntime.toNumber(value); } @@ -1736,7 +1206,7 @@ public static double toNumber(Object value) { * @param value a JavaScript value * @return the corresponding String value converted using the ECMA rules */ - public static String toString(Object value) { + static String toString(Object value) { return ScriptRuntime.toString(value); } @@ -1755,16 +1225,7 @@ public static String toString(Object value) { * @param scope global scope containing constructors for Number, Boolean, and String * @return new JavaScript object */ - public static Scriptable toObject(Object value, Scriptable scope) { - return ScriptRuntime.toObject(scope, value); - } - - /** - * @deprecated - * @see #toObject(Object, Scriptable) - */ - @Deprecated - public static Scriptable toObject(Object value, Scriptable scope, Class staticType) { + static Scriptable toObject(Object value, Scriptable scope) { return ScriptRuntime.toObject(scope, value); } @@ -1794,7 +1255,7 @@ public static Scriptable toObject(Object value, Scriptable scope, Class stati * @param scope top scope object * @return value suitable to pass to any API that takes JavaScript values. */ - public static Object javaToJS(Object value, Scriptable scope) { + static Object javaToJS(Object value, Scriptable scope) { return javaToJS(value, scope, null); } @@ -1824,7 +1285,7 @@ public static Object javaToJS(Object value, Scriptable scope) { * @param cx context to use for wrapping LiveConnect objects * @return value suitable to pass to any API that takes JavaScript values. */ - public static Object javaToJS(Object value, Scriptable scope, Context cx) { + static Object javaToJS(Object value, Scriptable scope, Context cx) { if (value instanceof String || value instanceof Number || value instanceof Boolean @@ -1850,30 +1311,14 @@ public static Object javaToJS(Object value, Scriptable scope, Context cx) { * @return the converted value * @throws EvaluatorException if the conversion cannot be performed */ - public static Object jsToJava(Object value, Class desiredType) throws EvaluatorException { + static Object jsToJava(Object value, Class desiredType) throws EvaluatorException { return jsToJava(value, TypeInfoFactory.GLOBAL.create(desiredType)); } - public static Object jsToJava(Object value, TypeInfo desiredType) throws EvaluatorException { + static Object jsToJava(Object value, TypeInfo desiredType) throws EvaluatorException { return NativeJavaObject.coerceTypeImpl(desiredType, value); } - /** - * @deprecated - * @see #jsToJava(Object, Class) - * @throws IllegalArgumentException if the conversion cannot be performed. Note that {@link - * #jsToJava(Object, Class)} throws {@link EvaluatorException} instead. - */ - @Deprecated - public static Object toType(Object value, Class desiredType) - throws IllegalArgumentException { - try { - return jsToJava(value, desiredType); - } catch (EvaluatorException ex) { - throw new IllegalArgumentException(ex.getMessage(), ex); - } - } - /** * Returns the javaToJSONConverter for this Context. * @@ -1885,12 +1330,7 @@ public static Object toType(Object value, Class desiredType) * * @return javaToJSONConverter for this Context */ - public UnaryOperator getJavaToJSONConverter() { - if (javaToJSONConverter == null) { - return JavaToJSONConverters.STRING; - } - return javaToJSONConverter; - } + UnaryOperator getJavaToJSONConverter(); /** * Sets the javaToJSONConverter for this Context. @@ -1905,13 +1345,8 @@ public UnaryOperator getJavaToJSONConverter() { * @param javaToJSONConverter * @throws IllegalArgumentException if javaToJSONConverter is null */ - public void setJavaToJSONConverter(UnaryOperator javaToJSONConverter) - throws IllegalArgumentException { - if (javaToJSONConverter == null) { - throw new IllegalArgumentException("javaToJSONConverter == null"); - } - this.javaToJSONConverter = javaToJSONConverter; - } + void setJavaToJSONConverter(UnaryOperator javaToJSONConverter) + throws IllegalArgumentException; /** * Rethrow the exception wrapping it as the script runtime exception. Unless the exception is @@ -1931,7 +1366,7 @@ public void setJavaToJSONConverter(UnaryOperator javaToJSONConverter) * @throws EvaluatorException * @throws EcmaError */ - public static RuntimeException throwAsScriptRuntimeEx(Throwable e) { + static RuntimeException throwAsScriptRuntimeEx(Throwable e) { while ((e instanceof InvocationTargetException)) { e = ((InvocationTargetException) e).getTargetException(); } @@ -1953,29 +1388,21 @@ public static RuntimeException throwAsScriptRuntimeEx(Throwable e) { * * @since 1.3 */ - public final boolean isGeneratingDebug() { - return generatingDebug; - } + boolean isGeneratingDebug(); /** * Specify whether or not debug information should be generated. * * @since 1.3 */ - public final void setGeneratingDebug(boolean generatingDebug) { - if (sealed) onSealedMutation(); - generatingDebugChanged = true; - this.generatingDebug = generatingDebug; - } + void setGeneratingDebug(boolean generatingDebug); /** * Tell whether source information is being generated. * * @since 1.3 */ - public final boolean isGeneratingSource() { - return generatingSource; - } + boolean isGeneratingSource(); /** * Specify whether or not source information should be generated. @@ -1986,77 +1413,20 @@ public final boolean isGeneratingSource() { * * @since 1.3 */ - public final void setGeneratingSource(boolean generatingSource) { - if (sealed) onSealedMutation(); - this.generatingSource = generatingSource; - } - - /** - * Get the current optimization level. - * - *

The optimization level is expressed as an integer between -1 and 9. Rhino now has only one - * optimization level, and we will always return either -1 or 9 here. - * - * @since 1.3 - * @deprecated As of 1.8.0, use {@link #isInterpretedMode()} instead. - */ - @Deprecated - public final int getOptimizationLevel() { - return interpretedMode ? -1 : 9; - } + void setGeneratingSource(boolean generatingSource); /** * Return whether Rhino is running in interpreted mode. In this mode, Rhino does not generate * bytecode, but runs much more slowly. Some platforms, notably Android, use this mode. */ - public final boolean isInterpretedMode() { - return interpretedMode; - } - - /** - * Set the current optimization level. - * - *

This function previously set multiple modes today. Any value less than zero sets up - * interpreted mode, and otherwise we run in compiled mode. - * - * @param optimizationLevel an integer indicating the level of optimization to perform - * @since 1.3 - * @deprecated As of 1.8.0, use {@link #setInterpretedMode(boolean)} instead. - */ - @Deprecated - public final void setOptimizationLevel(int optimizationLevel) { - setInterpretedMode(optimizationLevel < 0); - } + boolean isInterpretedMode(); /** * Set Rhino to run in interpreted mode. In this mode, Rhino does not generate bytecode, but * runs much more slowly. Some platforms, notably Android, must use this mode because they * cannot generate bytecode. */ - public final void setInterpretedMode(boolean interpretedMode) { - if (sealed) onSealedMutation(); - this.interpretedMode = interpretedMode; - } - - /** - * @deprecated As of 1.8.0, no longer has any use. - */ - @Deprecated - public static boolean isValidOptimizationLevel(int optimizationLevel) { - return -1 <= optimizationLevel && optimizationLevel <= 9; - } - - /** - * @deprecated As of 1.8.0, no longer has any use. - */ - @Deprecated - public static void checkOptimizationLevel(int optimizationLevel) { - if (isValidOptimizationLevel(optimizationLevel)) { - return; - } - throw new IllegalArgumentException( - "Optimization level outside [-1..9]: " + optimizationLevel); - } + void setInterpretedMode(boolean interpretedMode); /** * Returns the maximum stack depth (in terms of number of call frames) allowed in a single @@ -2070,9 +1440,7 @@ public static void checkOptimizationLevel(int optimizationLevel) { * * @return The current maximum interpreter stack depth. */ - public final int getMaximumInterpreterStackDepth() { - return maximumInterpreterStackDepth; - } + int getMaximumInterpreterStackDepth(); /** * Sets the maximum stack depth (in terms of number of call frames) allowed in a single @@ -2088,18 +1456,7 @@ public final int getMaximumInterpreterStackDepth() { * @throws IllegalStateException if this context's optimization level is not -1 * @throws IllegalArgumentException if the new depth is not at least 1 */ - public final void setMaximumInterpreterStackDepth(int max) { - if (sealed) onSealedMutation(); - if (!interpretedMode) { - throw new IllegalStateException( - "Cannot set maximumInterpreterStackDepth outside interpreted mode"); - } - if (max < 1) { - throw new IllegalArgumentException( - "Cannot set maximumInterpreterStackDepth to less than 1"); - } - maximumInterpreterStackDepth = max; - } + void setMaximumInterpreterStackDepth(int max); /** * Set the security controller for this context. @@ -2114,18 +1471,7 @@ public final void setMaximumInterpreterStackDepth(int max) { * @see SecurityController#initGlobal(SecurityController controller) * @see SecurityController#hasGlobal() */ - public final void setSecurityController(SecurityController controller) { - if (sealed) onSealedMutation(); - if (controller == null) throw new IllegalArgumentException(); - if (securityController != null) { - throw new SecurityException("Can not overwrite existing SecurityController object"); - } - if (SecurityController.hasGlobal()) { - throw new SecurityException( - "Can not overwrite existing global SecurityController object"); - } - securityController = controller; - } + void setSecurityController(SecurityController controller); /** * Set the LiveConnect access filter for this context. @@ -2136,42 +1482,15 @@ public final void setSecurityController(SecurityController controller) { * @param shutter a ClassShutter object * @throws SecurityException if there is already a ClassShutter object for this Context */ - public final synchronized void setClassShutter(ClassShutter shutter) { - if (sealed) onSealedMutation(); - if (shutter == null) throw new IllegalArgumentException(); - if (hasClassShutter) { - throw new SecurityException("Cannot overwrite existing " + "ClassShutter object"); - } - classShutter = shutter; - hasClassShutter = true; - } - - final synchronized ClassShutter getClassShutter() { - return classShutter; - } + void setClassShutter(ClassShutter shutter); - public interface ClassShutterSetter { + interface ClassShutterSetter { public void setClassShutter(ClassShutter shutter); public ClassShutter getClassShutter(); } - public final synchronized ClassShutterSetter getClassShutterSetter() { - if (hasClassShutter) return null; - hasClassShutter = true; - return new ClassShutterSetter() { - - @Override - public void setClassShutter(ClassShutter shutter) { - classShutter = shutter; - } - - @Override - public ClassShutter getClassShutter() { - return classShutter; - } - }; - } + ClassShutterSetter getClassShutterSetter(); /** * Get a value corresponding to a key. @@ -2187,10 +1506,7 @@ public ClassShutter getClassShutter() { * @param key the key used to lookup the value * @return a value previously stored using putThreadLocal. */ - public final Object getThreadLocal(Object key) { - if (threadLocalMap == null) return null; - return threadLocalMap.get(key); - } + Object getThreadLocal(Object key); /** * Put a value that can later be retrieved using a given key. @@ -2198,11 +1514,7 @@ public final Object getThreadLocal(Object key) { * @param key the key used to index the value * @param value the value to save */ - public final synchronized void putThreadLocal(Object key, Object value) { - if (sealed) onSealedMutation(); - if (threadLocalMap == null) threadLocalMap = new HashMap<>(); - threadLocalMap.put(key, value); - } + void putThreadLocal(Object key, Object value); /** * Remove values from thread-local storage. @@ -2210,19 +1522,7 @@ public final synchronized void putThreadLocal(Object key, Object value) { * @param key the key for the entry to remove. * @since 1.5 release 2 */ - public final void removeThreadLocal(Object key) { - if (sealed) onSealedMutation(); - if (threadLocalMap == null) return; - threadLocalMap.remove(key); - } - - /** - * @deprecated - * @see ClassCache#get(Scriptable) - * @see ClassCache#setCachingEnabled(boolean) - */ - @Deprecated - public static void setCachingEnabled(boolean cachingEnabled) {} + void removeThreadLocal(Object key); /** * Set a WrapFactory for this Context. @@ -2233,11 +1533,7 @@ public static void setCachingEnabled(boolean cachingEnabled) {} * @see WrapFactory * @since 1.5 Release 4 */ - public final void setWrapFactory(WrapFactory wrapFactory) { - if (sealed) onSealedMutation(); - if (wrapFactory == null) throw new IllegalArgumentException(); - this.wrapFactory = wrapFactory; - } + void setWrapFactory(WrapFactory wrapFactory); /** * Return the current WrapFactory, or null if none is defined. @@ -2245,30 +1541,21 @@ public final void setWrapFactory(WrapFactory wrapFactory) { * @see WrapFactory * @since 1.5 Release 4 */ - public final WrapFactory getWrapFactory() { - if (wrapFactory == null) { - wrapFactory = new WrapFactory(); - } - return wrapFactory; - } + WrapFactory getWrapFactory(); /** * Return the current debugger. * * @return the debugger, or null if none is attached. */ - public final Debugger getDebugger() { - return debugger; - } + Debugger getDebugger(); /** * Return the debugger context data associated with current context. * * @return the debugger data, or null if debugger is not attached */ - public final Object getDebuggerContextData() { - return debuggerData; - } + Object getDebuggerContextData(); /** * Set the associated debugger. @@ -2276,17 +1563,13 @@ public final Object getDebuggerContextData() { * @param debugger the debugger to be used on callbacks from the engine. * @param contextData arbitrary object that debugger can use to store per Context data. */ - public final void setDebugger(Debugger debugger, Object contextData) { - if (sealed) onSealedMutation(); - this.debugger = debugger; - debuggerData = contextData; - } + void setDebugger(Debugger debugger, Object contextData); /** * Return DebuggableScript instance if any associated with the script. If callable supports * DebuggableScript implementation, the method returns it. Otherwise null is returned. */ - public static DebuggableScript getDebuggableView(Script script) { + static DebuggableScript getDebuggableView(Script script) { if (script instanceof NativeFunction) { return ((NativeFunction) script).getDebuggableView(); } @@ -2318,31 +1601,7 @@ public static DebuggableScript getDebuggableView(Script script) { * @see #FEATURE_WARNING_AS_ERROR * @see #FEATURE_ENHANCED_JAVA_ACCESS */ - public boolean hasFeature(int featureIndex) { - ContextFactory f = getFactory(); - return f.hasFeature(this, featureIndex); - } - - /** - * Returns an object which specifies an E4X implementation to use within this Context - * . Note that the XMLLib.Factory interface should be considered experimental. - * - *

The default implementation uses the implementation provided by this Context's - * {@link ContextFactory}. - * - *

This is no longer used in E4X -- an implementation is only provided for backward - * compatibility. - * - * @return An XMLLib.Factory. Should not return null if {@link #FEATURE_E4X} is - * enabled. See {@link #hasFeature}. - */ - @Deprecated - public XMLLib.Factory getE4xImplementationFactory() { - if (ScriptRuntime.xmlLoaderImpl != null) { - return ScriptRuntime.xmlLoaderImpl.getFactory(); - } - return null; - } + boolean hasFeature(int featureIndex); /** * Get threshold of executed instructions counter that triggers call to @@ -2350,9 +1609,7 @@ public XMLLib.Factory getE4xImplementationFactory() { * disabled, otherwise each time the run-time executes at least the threshold value of script * instructions, observeInstructionCount() will be called. */ - public final int getInstructionObserverThreshold() { - return instructionThreshold; - } + int getInstructionObserverThreshold(); /** * Set threshold of executed instructions counter that triggers call to @@ -2367,12 +1624,7 @@ public final int getInstructionObserverThreshold() { * * @param threshold The instruction threshold */ - public final void setInstructionObserverThreshold(int threshold) { - if (sealed) onSealedMutation(); - if (threshold < 0) throw new IllegalArgumentException(); - instructionThreshold = threshold; - setGenerateObserverCount(threshold > 0); - } + void setInstructionObserverThreshold(int threshold); /** * Turn on or off generation of code with callbacks to track the count of executed instructions. @@ -2384,84 +1636,20 @@ public final void setInstructionObserverThreshold(int threshold) { * @param generateObserverCount if true, generated code will contain calls to accumulate an * estimate of the instructions executed. */ - public void setGenerateObserverCount(boolean generateObserverCount) { - this.generateObserverCount = generateObserverCount; - } + void setGenerateObserverCount(boolean generateObserverCount); /** Determine if observer counts should be generated. */ - public boolean isGenerateObserverCount() { - return this.generateObserverCount; - } - - /** - * Allow application to monitor counter of executed script instructions in Context subclasses. - * Run-time calls this when instruction counting is enabled and the counter reaches limit set by - * setInstructionObserverThreshold(). The method is useful to observe long running - * scripts and if necessary to terminate them. - * - *

The default implementation calls {@link ContextFactory#observeInstructionCount(Context cx, - * int instructionCount)} that allows to customize Context behavior without introducing Context - * subclasses. - * - * @param instructionCount amount of script instruction executed since last call to - * observeInstructionCount - * @throws Error to terminate the script - * @see #setOptimizationLevel(int) - */ - protected void observeInstructionCount(int instructionCount) { - ContextFactory f = getFactory(); - f.observeInstructionCount(this, instructionCount); - } + boolean isGenerateObserverCount(); /** * Create class loader for generated classes. The method calls {@link * ContextFactory#createClassLoader(ClassLoader)} using the result of {@link #getFactory()}. */ - public GeneratedClassLoader createClassLoader(ClassLoader parent) { - ContextFactory f = getFactory(); - return f.createClassLoader(parent); - } + GeneratedClassLoader createClassLoader(ClassLoader parent); - public final ClassLoader getApplicationClassLoader() { - if (applicationClassLoader == null) { - ContextFactory f = getFactory(); - ClassLoader loader = f.getApplicationClassLoader(); - if (loader == null) { - ClassLoader threadLoader = Thread.currentThread().getContextClassLoader(); - if (threadLoader != null && Kit.testIfCanLoadRhinoClasses(threadLoader)) { - // Thread.getContextClassLoader is not cached since - // its caching prevents it from GC which may lead to - // a memory leak and hides updates to - // Thread.getContextClassLoader - return threadLoader; - } - // Thread.getContextClassLoader can not load Rhino classes, - // try to use the loader of ContextFactory or Context - // subclasses. - Class fClass = f.getClass(); - if (fClass != ScriptRuntime.ContextFactoryClass) { - loader = fClass.getClassLoader(); - } else { - loader = getClass().getClassLoader(); - } - } - applicationClassLoader = loader; - } - return applicationClassLoader; - } + ClassLoader getApplicationClassLoader(); - public final void setApplicationClassLoader(ClassLoader loader) { - if (sealed) onSealedMutation(); - if (loader == null) { - // restore default behaviour - applicationClassLoader = null; - return; - } - if (!Kit.testIfCanLoadRhinoClasses(loader)) { - throw new IllegalArgumentException("Loader can not resolve Rhino classes"); - } - applicationClassLoader = loader; - } + void setApplicationClassLoader(ClassLoader loader); /** * Add a task that will be executed at the end of the current operation. The various "evaluate" @@ -2469,9 +1657,7 @@ public final void setApplicationClassLoader(ClassLoader loader) { * Otherwise, callers should call "processMicrotasks" to run them all. This feature is primarily * used to implement Promises. The microtask queue is not thread-safe. */ - public void enqueueMicrotask(Runnable task) { - microtasks.add(task); - } + void enqueueMicrotask(Runnable task); /** * Run all the microtasks for the current context to completion. This is called by the various @@ -2479,15 +1665,7 @@ public void enqueueMicrotask(Runnable task) { * function to ensure that everything completes if they want all Promises to eventually resolve. * This function is idempotent, but the microtask queue is not thread-safe. */ - public void processMicrotasks() { - Runnable head; - do { - head = microtasks.poll(); - if (head != null) { - head.run(); - } - } while (head != null); - } + void processMicrotasks(); /** * Control whether to track unhandled promise rejections. If "track" is set to true, then the @@ -2496,22 +1674,18 @@ public void processMicrotasks() { * * @param track if true, then track unhandled promise rejections */ - public void setTrackUnhandledPromiseRejections(boolean track) { - unhandledPromises.enable(track); - } + void setTrackUnhandledPromiseRejections(boolean track); /** * Return the object used to track unhandled promise rejections. * * @return the tracker object */ - public UnhandledRejectionTracker getUnhandledPromiseTracker() { - return unhandledPromises; - } + UnhandledRejectionTracker getUnhandledPromiseTracker(); /* ******** end of API ********* */ - /** Internal method that reports an error for missing calls to enter(). */ + /* ****** MORE API ? ****** */ static Context getContext() { Context cx = getCurrentContext(); if (cx == null) { @@ -2520,208 +1694,7 @@ static Context getContext() { return cx; } - protected Object compileImpl( - Scriptable scope, - String sourceString, - String sourceName, - int lineno, - Object securityDomain, - boolean returnFunction, - Evaluator compiler, - ErrorReporter compilationErrorReporter, - Consumer compilerEnvironProcessor) { - if (sourceName == null) { - sourceName = "unnamed script"; - } - if (securityDomain != null && getSecurityController() == null) { - throw new IllegalArgumentException( - "securityDomain should be null if setSecurityController() was never called"); - } - - // scope should be given if and only if compiling function - if (!(scope == null ^ returnFunction)) Kit.codeBug(); - - CompilerEnvirons compilerEnv = new CompilerEnvirons(); - compilerEnv.initFromContext(this); - if (compilationErrorReporter == null) { - compilationErrorReporter = compilerEnv.getErrorReporter(); - } - if (compilerEnvironProcessor != null) { - compilerEnvironProcessor.accept(compilerEnv); - } - - ScriptNode tree = - parse( - sourceString, - sourceName, - lineno, - compilerEnv, - compilationErrorReporter, - returnFunction); - - Object bytecode; - try { - if (compiler == null) { - compiler = createCompiler(); - } - - bytecode = compiler.compile(compilerEnv, tree, sourceString, returnFunction); - } catch (ClassFileFormatException e) { - // we hit some class file limit, fall back to interpreter or report - - // we have to recreate the tree because the compile call might have changed the tree - // already - tree = - parse( - sourceString, - sourceName, - lineno, - compilerEnv, - compilationErrorReporter, - returnFunction); - - compiler = createInterpreter(); - bytecode = compiler.compile(compilerEnv, tree, sourceString, returnFunction); - } - - if (debugger != null) { - if (sourceString == null) Kit.codeBug(); - if (bytecode instanceof DebuggableScript) { - DebuggableScript dscript = (DebuggableScript) bytecode; - notifyDebugger_r(this, dscript, sourceString); - } else { - throw new RuntimeException("NOT SUPPORTED"); - } - } - - Object result; - if (returnFunction) { - result = compiler.createFunctionObject(this, scope, bytecode, securityDomain); - } else { - result = compiler.createScriptObject(bytecode, securityDomain); - } - - return result; - } - - private ScriptNode parse( - String sourceString, - String sourceName, - int lineno, - CompilerEnvirons compilerEnv, - ErrorReporter compilationErrorReporter, - boolean returnFunction) { - Parser p = new Parser(compilerEnv, compilationErrorReporter); - if (returnFunction) { - p.calledByCompileFunction = true; - } - if (isStrictMode()) { - p.setDefaultUseStrictDirective(true); - } - - AstRoot ast = p.parse(sourceString, sourceName, lineno); - if (returnFunction) { - // parser no longer adds function to script node - if (!(ast.getFirstChild() != null && ast.getFirstChild().getType() == Token.FUNCTION)) { - // XXX: the check just looks for the first child - // and allows for more nodes after it for compatibility - // with sources like function() {};;; - throw new IllegalArgumentException( - "compileFunction only accepts source with single JS function: " - + sourceString); - } - } - - IRFactory irf = - new IRFactory(compilerEnv, sourceName, sourceString, compilationErrorReporter); - ScriptNode tree = irf.transformTree(ast); - - if (compilerEnv.isGeneratingSource()) { - tree.setRawSource(sourceString); - tree.setRawSourceBounds(0, sourceString.length()); - } - - return tree; - } - - private static void notifyDebugger_r(Context cx, DebuggableScript dscript, String debugSource) { - cx.debugger.handleCompilationDone(cx, dscript, debugSource); - for (int i = 0; i != dscript.getFunctionCount(); ++i) { - notifyDebugger_r(cx, dscript.getFunction(i), debugSource); - } - } - - private static Class codegenClass = - Kit.classOrNull("org.mozilla.javascript.optimizer.Codegen"); - private static Class interpreterClass = - Kit.classOrNull("org.mozilla.javascript.Interpreter"); - - private Evaluator createCompiler() { - Evaluator result = null; - if (!interpretedMode && codegenClass != null) { - result = (Evaluator) Kit.newInstanceOrNull(codegenClass); - } - if (result == null) { - result = createInterpreter(); - } - return result; - } - - static Evaluator createInterpreter() { - return (Evaluator) Kit.newInstanceOrNull(interpreterClass); - } - - static String getSourcePositionFromStack(int[] linep) { - Context cx = getCurrentContext(); - if (cx == null) return null; - if (cx.lastInterpreterFrame != null) { - Evaluator evaluator = createInterpreter(); - if (evaluator != null) return evaluator.getSourcePositionFromStack(cx, linep); - } - - return getSourcePositionFromJavaStack(linep); - } - - /** Returns the current filename in the java stack. */ - static String getSourcePositionFromJavaStack(int[] linep) { - StackTraceElement[] stack = new Throwable().getStackTrace(); - for (StackTraceElement e : stack) { - if (frameMatches(e)) { - linep[0] = e.getLineNumber(); - return e.getFileName(); - } - } - return null; - } - - private static boolean frameMatches(StackTraceElement e) { - return (e.getFileName() == null || !e.getFileName().endsWith(".java")) - && e.getLineNumber() > 0; - } - - RegExpProxy getRegExpProxy() { - if (regExpProxy == null && regExpLoader != null) { - regExpProxy = regExpLoader.newProxy(); - } - return regExpProxy; - } - - final boolean isVersionECMA1() { - return version == VERSION_DEFAULT || version >= VERSION_1_3; - } - - // The method must NOT be public or protected - SecurityController getSecurityController() { - SecurityController global = SecurityController.global(); - if (global != null) { - return global; - } - return securityController; - } - - public final boolean isGeneratingDebugChanged() { - return generatingDebugChanged; - } + boolean isGeneratingDebugChanged(); /** * Add a name to the list of names forcing the creation of real activation objects for @@ -2729,11 +1702,7 @@ public final boolean isGeneratingDebugChanged() { * * @param name the name of the object to add to the list */ - public void addActivationName(String name) { - if (sealed) onSealedMutation(); - if (activationNames == null) activationNames = new HashSet<>(); - activationNames.add(name); - } + void addActivationName(String name); /** * Check whether the name is in the list of names of objects forcing the creation of activation @@ -2742,9 +1711,7 @@ public void addActivationName(String name) { * @param name the name of the object to test * @return true if an function activation object is needed. */ - public final boolean isActivationNeeded(String name) { - return activationNames != null && activationNames.contains(name); - } + boolean isActivationNeeded(String name); /** * Remove a name from the list of names forcing the creation of real activation objects for @@ -2752,17 +1719,11 @@ public final boolean isActivationNeeded(String name) { * * @param name the name of the object to remove from the list */ - public void removeActivationName(String name) { - if (sealed) onSealedMutation(); - if (activationNames != null) activationNames.remove(name); - } + void removeActivationName(String name); - public final boolean isStrictMode() { - return isTopLevelStrict - || (currentActivationCall != null && currentActivationCall.isStrict); - } + boolean isStrictMode(); - public static boolean isCurrentContextStrict() { + static boolean isCurrentContextStrict() { Context cx = getCurrentContext(); if (cx == null) { return false; @@ -2770,68 +1731,10 @@ public static boolean isCurrentContextStrict() { return cx.isStrictMode(); } - private final ContextFactory factory; - private boolean sealed; - private Object sealKey; - - Scriptable topCallScope; - boolean isContinuationsTopCall; - NativeCall currentActivationCall; - XMLLib cachedXMLLib; - BaseFunction typeErrorThrower; - - // for Objects, Arrays to tag themselves as being printed out, - // so they don't print themselves out recursively. - // Use ObjToIntMap instead of java.util.HashSet for JDK 1.1 compatibility - Set iterating; - - Object interpreterSecurityDomain; - - int version; - - private SecurityController securityController; - private boolean hasClassShutter; - private ClassShutter classShutter; - private ErrorReporter errorReporter; - RegExpProxy regExpProxy; - private Locale locale; - private TimeZone timezone; - private boolean generatingDebug; - private boolean generatingDebugChanged; - private boolean generatingSource = true; - boolean useDynamicScope; - private boolean interpretedMode; - private int maximumInterpreterStackDepth; - private WrapFactory wrapFactory; - Debugger debugger; - private Object debuggerData; - private int enterCount; - private Object propertyListeners; - private Map threadLocalMap; - private ClassLoader applicationClassLoader; - private UnaryOperator javaToJSONConverter; - private final ArrayDeque microtasks = new ArrayDeque<>(); - private final UnhandledRejectionTracker unhandledPromises = new UnhandledRejectionTracker(); - - /** This is the list of names of objects forcing the creation of function activation records. */ - Set activationNames; - - // For the interpreter to store the last frame for error reports - // etc. Previous frames can all be derived from this. - Object lastInterpreterFrame; - - // For instruction counting (interpreter only) - int instructionCount; - int instructionThreshold; - - // It can be used to return the second uint32 result from function - long scratchUint32; - - // It can be used to return the second Scriptable result from function - Scriptable scratchScriptable; - - // Generate an observer count on compiled code - boolean generateObserverCount = false; - - boolean isTopLevelStrict; + /** + * Return the impl + * + * @return + */ + ContextImpl impl(); } diff --git a/rhino/src/main/java/org/mozilla/javascript/ContextFactory.java b/rhino/src/main/java/org/mozilla/javascript/ContextFactory.java index 43eef0fa4c..01e06996d7 100644 --- a/rhino/src/main/java/org/mozilla/javascript/ContextFactory.java +++ b/rhino/src/main/java/org/mozilla/javascript/ContextFactory.java @@ -199,7 +199,7 @@ public ContextFactory getContextFactoryGlobal() { * scripts or applets. */ protected Context makeContext() { - return new Context(this); + return new ContextImpl(this); } /** @@ -349,8 +349,8 @@ protected Object doTopCall( } /** - * Implementation of {@link Context#observeInstructionCount(int instructionCount)}. This can be - * used to customize {@link Context} without introducing additional subclasses. + * Implementation of {@link ContextImpl#observeInstructionCount(int instructionCount)}. This can + * be used to customize {@link Context} without introducing additional subclasses. */ protected void observeInstructionCount(Context cx, int instructionCount) {} @@ -514,6 +514,6 @@ public final void exit() { * thread */ public final Context enterContext(Context cx) { - return Context.enter(cx, this); + return ContextImpl.enter(cx, this); } } diff --git a/rhino/src/main/java/org/mozilla/javascript/ContextImpl.java b/rhino/src/main/java/org/mozilla/javascript/ContextImpl.java new file mode 100644 index 0000000000..89aff4786e --- /dev/null +++ b/rhino/src/main/java/org/mozilla/javascript/ContextImpl.java @@ -0,0 +1,2843 @@ +/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +// API class + +package org.mozilla.javascript; + +import java.beans.PropertyChangeEvent; +import java.beans.PropertyChangeListener; +import java.io.IOException; +import java.io.PrintWriter; +import java.io.Reader; +import java.io.StringWriter; +import java.io.Writer; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.ArrayDeque; +import java.util.EnumSet; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Locale; +import java.util.Map; +import java.util.Set; +import java.util.TimeZone; +import java.util.function.Consumer; +import java.util.function.UnaryOperator; +import org.mozilla.classfile.ClassFileWriter.ClassFileFormatException; +import org.mozilla.javascript.ast.AstRoot; +import org.mozilla.javascript.ast.ScriptNode; +import org.mozilla.javascript.debug.DebuggableScript; +import org.mozilla.javascript.debug.Debugger; +import org.mozilla.javascript.lc.type.TypeInfo; +import org.mozilla.javascript.lc.type.TypeInfoFactory; +import org.mozilla.javascript.xml.XMLLib; + +/** + * This class represents the runtime context of an executing script. + * + *

Before executing a script, an instance of Context must be created and associated with the + * thread that will be executing the script. The Context will be used to store information about the + * executing of the script such as the call stack. Contexts are associated with the current thread + * using the {@link #call(ContextAction)} or {@link #enter()} methods. + * + *

Different forms of script execution are supported. Scripts may be evaluated from the source + * directly, or first compiled and then later executed. Interactive execution is also supported. + * + *

Some aspects of script execution, such as type conversions and object creation, may be + * accessed directly through methods of Context. + * + * @see Scriptable + * @author Norris Boyd + * @author Brendan Eich + */ +public class ContextImpl implements Context { + /** + * Language versions. + * + *

All integral values are reserved for future version numbers. + */ + + /** + * The unknown version. + * + *

Be aware, this version will not support many of the newer language features and will not + * change in the future. In practice, for historical reasons, this is an odd version that + * doesn't necessarily match any particular version of JavaScript and should not be used. + * + *

Please use one of the other constants like {@link #VERSION_ECMASCRIPT} to get support for + * recent language features. + */ + public static final int VERSION_UNKNOWN = -1; + + /** + * The default version for older versions of Rhino. + * + *

Be aware, this version will not support many of the newer language features and will not + * change in the future. In practice, for historical reasons, this is an odd version that + * doesn't necessarily match any particular version of JavaScript and should not be used, + * although many older scripts and many tests may depend on it. + * + *

Please use one of the other constants like {@link #VERSION_ECMASCRIPT} to get support for + * recent language features. + */ + public static final int VERSION_DEFAULT = 0; + + /** JavaScript 1.0 */ + public static final int VERSION_1_0 = 100; + + /** JavaScript 1.1 */ + public static final int VERSION_1_1 = 110; + + /** JavaScript 1.2 */ + public static final int VERSION_1_2 = 120; + + /** JavaScript 1.3 */ + public static final int VERSION_1_3 = 130; + + /** JavaScript 1.4 */ + public static final int VERSION_1_4 = 140; + + /** JavaScript 1.5 */ + public static final int VERSION_1_5 = 150; + + /** JavaScript 1.6 */ + public static final int VERSION_1_6 = 160; + + /** JavaScript 1.7 */ + public static final int VERSION_1_7 = 170; + + /** JavaScript 1.8 */ + public static final int VERSION_1_8 = 180; + + /** + * ECMAScript 6 and after. This constant refers to the latest version of the language, and is + * mostly identical to {@link #VERSION_ECMASCRIPT}. The difference is that features that may + * cause existing code to break, such as enforcement of "const" and strict mode checks, are not + * enabled. + * + *

As of version 1.8, this is the default language version. + */ + public static final int VERSION_ES6 = 200; + + /** + * The current version of JavaScript as defined by ECMAScript. This version will always refer to + * the latest version of the language that Rhino supports. This will include everything in + * {@link #VERSION_ES6}, plus features that may cause backward incompatibility, such as + * enforcement of "const" and strict mode checks. + * + *

As of version 1.8, the Rhino community has no plans to continue adding new language + * versions, but instead plans to track the ECMAScript specification as it evolves and add new + * features in new versions of Rhino using this version number. + */ + public static final int VERSION_ECMASCRIPT = 250; + + /** + * Controls behaviour of Date.prototype.getYear(). If + * hasFeature(FEATURE_NON_ECMA_GET_YEAR) returns true, Date.prototype.getYear subtructs + * 1900 only if 1900 <= date < 2000. The default behavior of {@link #hasFeature(int)} is + * always to subtract 1900 as required by ECMAScript B.2.4. + */ + public static final int FEATURE_NON_ECMA_GET_YEAR = 1; + + /** + * Control if member expression as function name extension is available. If + * hasFeature(FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME) returns true, allow + * function memberExpression(args) { body } to be syntax sugar for + * memberExpression = function(args) { body }, when memberExpression is not a simple + * identifier. See ECMAScript-262, section 11.2 for definition of memberExpression. By default + * {@link #hasFeature(int)} returns false. + */ + public static final int FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME = 2; + + /** + * Control if reserved keywords are treated as identifiers. If + * hasFeature(RESERVED_KEYWORD_AS_IDENTIFIER) returns true, treat future reserved keyword + * (see Ecma-262, section 7.5.3) as ordinary identifiers but warn about this usage. + * + *

By default {@link #hasFeature(int)} returns false. + */ + public static final int FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER = 3; + + /** + * Control if toString() should returns the same result as toSource() + * when applied to objects and arrays. If hasFeature(FEATURE_TO_STRING_AS_SOURCE) + * returns true, calling toString() on JS objects gives the same result as calling + * toSource(). That is it returns JS source with code to create an object with all + * enumerable fields of the original object instead of printing [object result of + * {@link Scriptable#getClassName()}]. + * + *

By default {@link #hasFeature(int)} returns true only if the current JS version is set to + * {@link #VERSION_1_2}. + */ + public static final int FEATURE_TO_STRING_AS_SOURCE = 4; + + /** + * Control if properties __proto__ and __parent__ are treated + * specially. If hasFeature(FEATURE_PARENT_PROTO_PROPERTIES) returns true, treat + * __parent__ and __proto__ as special properties. + * + *

The properties allow to query and set scope and prototype chains for the objects. The + * special meaning of the properties is available only when they are used as the right hand side + * of the dot operator. For example, while x.__proto__ = y changes the prototype + * chain of the object x to point to y, x["__proto__"] = y + * simply assigns a new value to the property __proto__ in x + * even when the feature is on. + * + *

By default {@link #hasFeature(int)} returns true. + */ + public static final int FEATURE_PARENT_PROTO_PROPERTIES = 5; + + /** + * @deprecated In previous releases, this name was given to FEATURE_PARENT_PROTO_PROPERTIES. + */ + @Deprecated public static final int FEATURE_PARENT_PROTO_PROPRTIES = 5; + + /** + * Control if support for E4X(ECMAScript for XML) extension is available. If + * hasFeature(FEATURE_E4X) returns true, the XML syntax is available. + * + *

By default {@link #hasFeature(int)} returns true if the current JS version is set to + * {@link #VERSION_DEFAULT} or is at least {@link #VERSION_1_6}. + * + * @since 1.6 Release 1 + */ + public static final int FEATURE_E4X = 6; + + /** + * Control if dynamic scope should be used for name access. If hasFeature(FEATURE_DYNAMIC_SCOPE) + * returns true, then the name lookup during name resolution will use the top scope of the + * script or function which is at the top of JS execution stack instead of the top scope of the + * script or function from the current stack frame if the top scope of the top stack frame + * contains the top scope of the current stack frame on its prototype chain. + * + *

This is useful to define shared scope containing functions that can be called from scripts + * and functions using private scopes. + * + *

By default {@link #hasFeature(int)} returns false. + * + * @since 1.6 Release 1 + */ + public static final int FEATURE_DYNAMIC_SCOPE = 7; + + /** + * Control if strict variable mode is enabled. When the feature is on Rhino reports runtime + * errors if assignment to a global variable that does not exist is executed. When the feature + * is off such assignments create a new variable in the global scope as required by ECMA 262. + * + *

By default {@link #hasFeature(int)} returns false. + * + * @since 1.6 Release 1 + */ + public static final int FEATURE_STRICT_VARS = 8; + + /** + * Control if strict eval mode is enabled. When the feature is on Rhino reports runtime errors + * if non-string argument is passed to the eval function. When the feature is off eval simply + * return non-string argument as is without performing any evaluation as required by ECMA 262. + * + *

By default {@link #hasFeature(int)} returns false. + * + * @since 1.6 Release 1 + */ + public static final int FEATURE_STRICT_EVAL = 9; + + /** + * When the feature is on Rhino will add a "fileName" and "lineNumber" properties to Error + * objects automatically. When the feature is off, you have to explicitly pass them as the + * second and third argument to the Error constructor. Note that neither behavior is fully ECMA + * 262 compliant (as 262 doesn't specify a three-arg constructor), but keeping the feature off + * results in Error objects that don't have additional non-ECMA properties when constructed + * using the ECMA-defined single-arg constructor and is thus desirable if a stricter ECMA + * compliance is desired, specifically adherence to the point 15.11.5. of the standard. + * + *

By default {@link #hasFeature(int)} returns false. + * + * @since 1.6 Release 6 + */ + public static final int FEATURE_LOCATION_INFORMATION_IN_ERROR = 10; + + /** + * Controls whether JS 1.5 'strict mode' is enabled. When the feature is on, Rhino reports more + * than a dozen different warnings. When the feature is off, these warnings are not generated. + * FEATURE_STRICT_MODE implies FEATURE_STRICT_VARS and FEATURE_STRICT_EVAL. + * + *

By default {@link #hasFeature(int)} returns false. + * + * @since 1.6 Release 6 + */ + public static final int FEATURE_STRICT_MODE = 11; + + /** + * Controls whether a warning should be treated as an error. + * + * @since 1.6 Release 6 + */ + public static final int FEATURE_WARNING_AS_ERROR = 12; + + /** + * Enables enhanced access to Java. Specifically, controls whether private and protected members + * can be accessed, and whether scripts can catch all Java exceptions. + * + *

Note that this feature should only be enabled for trusted scripts. + * + *

By default {@link #hasFeature(int)} returns false. + * + * @since 1.7 Release 1 + */ + public static final int FEATURE_ENHANCED_JAVA_ACCESS = 13; + + /** + * Enables access to JavaScript features from ECMAscript 6 that are present in JavaScript + * engines that do not yet support version 6, such as V8. This includes support for typed + * arrays. Default is true. + * + * @since 1.7 Release 3 + */ + public static final int FEATURE_V8_EXTENSIONS = 14; + + /** + * Defines how an undefined "this" parameter is handled in certain calls. Previously Rhino would + * convert an undefined "this" to null, whereas recent specs call for it to be treated + * differently. Default is to be set if language version <= 1.7. + * + * @since 1.7.7 + */ + public static final int FEATURE_OLD_UNDEF_NULL_THIS = 15; + + /** + * If set, then the order of property key enumeration will be first numeric keys in numeric + * order, followed by string keys in order of creation, and finally Symbol keys, as specified in + * ES6. Default is true for language version >= "ES6" and false otherwise. + * + * @since 1.7.7.1 + */ + public static final int FEATURE_ENUMERATE_IDS_FIRST = 16; + + /** + * If set, then all objects will have a thread-safe property map. (Note that this doesn't make + * everything else that they do thread-safe -- that depends on the specific implementation. If + * not set, users should not share Rhino objects between threads, unless the "sync" function is + * used to wrap them with an explicit synchronizer. The default is false, which means that by + * default, individual objects are not thread-safe. + * + * @since 1.7.8 + */ + public static final int FEATURE_THREAD_SAFE_OBJECTS = 17; + + /** + * If set, then all integer numbers will be returned without decimal place. For instance assume + * there is a function like this: function foo() {return 5;} 5 will be returned if + * feature is set, 5.0 otherwise. + */ + public static final int FEATURE_INTEGER_WITHOUT_DECIMAL_PLACE = 18; + + /** + * TypedArray buffer uses little/big endian depending on the platform. The default is big endian + * for Rhino. + * + * @since 1.7 Release 11 + */ + public static final int FEATURE_LITTLE_ENDIAN = 19; + + /** + * Configure the XMLProcessor to parse XML with security features or not. Security features + * include not fetching remote entity references and disabling XIncludes + * + * @since 1.7 Release 12 + */ + public static final int FEATURE_ENABLE_XML_SECURE_PARSING = 20; + + /** + * Configure whether the entries in a Java Map can be accessed by properties. + * + *

Not enabled: + * + *

var map = new java.util.HashMap(); map.put('foo', 1); map.foo; // undefined + * + *

Enabled: + * + *

var map = new java.util.HashMap(); map.put('foo', 1); map.foo; // 1 + * + *

WARNING: This feature is similar to the one in Nashorn, but incomplete. + * + *

1. A entry has priority over method. + * + *

map.put("put", "abc"); map.put; // abc map.put("put", "efg"); // ERROR + * + *

2. The distinction between numeric keys and string keys is ambiguous. + * + *

map.put('1', 123); map['1']; // Not found. This means `map[1]`. + * + * @since 1.7 Release 14 + */ + public static final int FEATURE_ENABLE_JAVA_MAP_ACCESS = 21; + + /** + * Internationalization API implementation (see ECMA-402) can be activated using this feature. + * + * @since 1.7 Release 15 + */ + public static final int FEATURE_INTL_402 = 22; + + public static final String languageVersionProperty = "language version"; + public static final String errorReporterProperty = "error reporter"; + + private static final RegExpLoader regExpLoader = + ScriptRuntime.loadOneServiceImplementation(RegExpLoader.class); + + /** + * Convenient value to use as zero-length array of objects. + * + * @deprecated As of 1.8.1, use {@link ScriptRuntime#emptyArgs} instead. + */ + @Deprecated public static final Object[] emptyArgs = ScriptRuntime.emptyArgs; + + /** + * Stores the current context per thread. + * + *

Note: former methods (VMBridge) have used an Object[] for performance reasons. This seems + * to be outdated. ThreadLocal.get/set gives better performance. (But do not use + * ThreadLocal.remove.) See ContextThreadLocalBenchmark + */ + private static final ThreadLocal currentContext = new ThreadLocal<>(); + + /** + * Creates a new Context. The context will be associated with the {@link + * ContextFactory#getGlobal() global context factory}. By default, the new context will run in + * compiled mode and use the {@link #VERSION_ES6} language version, which supports features as + * defined in the most recent ECMAScript standard. This default behavior can be changed by + * overriding the ContextFactory class and installing the new implementation as the global + * ContextFactory. + * + *

Note that the Context must be associated with a thread before it can be used to execute a + * script. + * + * @deprecated this constructor is deprecated because it creates a dependency on a static + * singleton context factory. Use {@link ContextFactory#enter()} or {@link + * ContextFactory#call(ContextAction)} instead. If you subclass this class, consider using + * {@link #ContextImpl(ContextFactory)} constructor instead in the subclasses' constructors. + */ + @Deprecated + public ContextImpl() { + this(ContextFactory.getGlobal()); + } + + /** + * Creates a new context. Provided as a preferred super constructor for subclasses in place of + * the deprecated default public constructor. By default, the new context will run in compiled + * mode and use the {@link #VERSION_ES6} language version, which supports features as defined in + * the most recent ECMAScript standard. This default behavior can be changed by overriding the + * ContextFactory class + * + * @param factory the context factory associated with this context (most likely, the one that + * created the context). Can not be null. The context features are inherited from the + * factory, and the context will also otherwise use its factory's services. + * @throws IllegalArgumentException if factory parameter is null. + */ + protected ContextImpl(ContextFactory factory) { + if (factory == null) { + throw new IllegalArgumentException("factory == null"); + } + this.factory = factory; + version = VERSION_ES6; + interpretedMode = codegenClass == null; + maximumInterpreterStackDepth = Integer.MAX_VALUE; + } + + /** + * Get the current Context. + * + *

The current Context is per-thread; this method looks up the Context associated with the + * current thread. + * + * @return the Context associated with the current thread, or null if no context is associated + * with the current thread. + * @see ContextFactory#enterContext() + * @see ContextFactory#call(ContextAction) + */ + public static Context getCurrentContext() { + return currentContext.get(); + } + + /** + * Same as calling {@link ContextFactory#enterContext()} on the global ContextFactory instance. + * + * @return a Context associated with the current thread + * @see #getCurrentContext() + * @see #exit() + * @see #call(ContextAction) + */ + public static Context enter() { + return enter(null, ContextFactory.getGlobal()); + } + + /** + * Get a Context associated with the current thread, using the given Context if need be. + * + *

The same as enter() except that cx is associated with the + * current thread and returned if the current thread has no associated context and cx + * is not associated with any other thread. + * + * @param cx a Context to associate with the thread if possible + * @return a Context associated with the current thread + * @deprecated use {@link ContextFactory#enterContext(Context)} instead as this method relies on + * usage of a static singleton "global" ContextFactory. + * @see ContextFactory#enterContext(Context) + * @see ContextFactory#call(ContextAction) + */ + @Deprecated + public static Context enter(Context cx) { + return enter(cx, ContextFactory.getGlobal()); + } + + static final Context enter(Context cx, ContextFactory factory) { + if (cx != null) { + currentContext.set(cx); + return cx; + } + + return enter(factory); + } + + static final Context enter(ContextFactory factory) { + Context oldCx = currentContext.get(); + if (oldCx != null) { + return new ContextNested(oldCx); + + } else { + Context cx = factory.makeContext(); + + factory.onContextCreated(cx); + if (factory.isSealed() && !cx.isSealed()) { + cx.seal(null); + } + currentContext.set(cx); + return cx; + } + } + + /** + * Exit a block of code requiring a Context. + * + *

Calling exit() will remove the association between the current thread and a + * Context if the prior call to {@link ContextFactory#enterContext()} on this thread newly + * associated a Context with this thread. Once the current thread no longer has an associated + * Context, it cannot be used to execute JavaScript until it is again associated with a Context. + * + * @see ContextFactory#enterContext() + */ + public static void exit() { + Context cx = currentContext.get(); + if (cx == null) { + throw new IllegalStateException("Calling Context.exit without previous Context.enter"); + } + cx.close(); + } +boolean closed = false; + @Override + public void close() { + if (closed) return; + closed = true; + assert (currentContext.get() == this) + : "currentContext: " + currentContext.get() + ", this: " + this; + currentContext.set(null); + factory.onContextReleased(this); + } + + /** + * Call {@link ContextAction#run(Context cx)} using the Context instance associated with the + * current thread. If no Context is associated with the thread, then + * ContextFactory.getGlobal().makeContext() will be called to construct new Context + * instance. The instance will be temporary associated with the thread during call to {@link + * ContextAction#run(Context)}. + * + * @deprecated use {@link ContextFactory#call(ContextAction)} instead as this method relies on + * usage of a static singleton "global" ContextFactory. + * @return The result of {@link ContextAction#run(Context)}. + */ + @Deprecated + public static T call(ContextAction action) { + return call(ContextFactory.getGlobal(), action); + } + + /** + * Call {@link Callable#call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args)} + * using the Context instance associated with the current thread. If no Context is associated + * with the thread, then {@link ContextFactory#makeContext()} will be called to construct new + * Context instance. The instance will be temporary associated with the thread during call to + * {@link ContextAction#run(Context)}. + * + *

It is allowed but not advisable to use null for factory argument in which + * case the global static singleton ContextFactory instance will be used to create new context + * instances. + * + * @see ContextFactory#call(ContextAction) + */ + public static Object call( + ContextFactory factory, + final Callable callable, + final Scriptable scope, + final Scriptable thisObj, + final Object[] args) { + if (factory == null) { + factory = ContextFactory.getGlobal(); + } + return call(factory, cx -> callable.call(cx, scope, thisObj, args)); + } + + /** The method implements {@link ContextFactory#call(ContextAction)} logic. */ + static T call(ContextFactory factory, ContextAction action) { + try (Context cx = enter(null, factory)) { + return action.run(cx); + } + } + + /** + * @deprecated + * @see ContextFactory#addListener(ContextFactory.Listener) + * @see ContextFactory#getGlobal() + */ + @Deprecated + public static void addContextListener(ContextListener listener) { + // Special workaround for the debugger + String DBG = "org.mozilla.javascript.tools.debugger.Main"; + if (DBG.equals(listener.getClass().getName())) { + Class cl = listener.getClass(); + Class factoryClass = Kit.classOrNull("org.mozilla.javascript.ContextFactory"); + Class[] sig = {factoryClass}; + Object[] args = {ContextFactory.getGlobal()}; + try { + Method m = cl.getMethod("attachTo", sig); + m.invoke(listener, args); + } catch (Exception ex) { + throw new RuntimeException(ex); + } + return; + } + + ContextFactory.getGlobal().addListener(listener); + } + + /** + * @deprecated + * @see ContextFactory#removeListener(ContextFactory.Listener) + * @see ContextFactory#getGlobal() + */ + @Deprecated + public static void removeContextListener(ContextListener listener) { + ContextFactory.getGlobal().addListener(listener); + } + + /** Return {@link ContextFactory} instance used to create this Context. */ + @Override + public final ContextFactory getFactory() { + return factory; + } + + /** + * Checks if this is a sealed Context. A sealed Context instance does not allow to modify any of + * its properties and will throw an exception on any such attempt. + * + * @see #seal(Object sealKey) + */ + @Override + public final boolean isSealed() { + return sealed; + } + + /** + * Seal this Context object so any attempt to modify any of its properties including calling + * {@link #enter()} and {@link #exit()} methods will throw an exception. + * + *

If sealKey is not null, calling {@link #unseal(Object sealKey)} with the same + * key unseals the object. If sealKey is null, unsealing is no longer possible. + * + * @see #isSealed() + * @see #unseal(Object) + */ + @Override + public final void seal(Object sealKey) { + if (sealed) onSealedMutation(); + sealed = true; + this.sealKey = sealKey; + } + + /** + * Unseal previously sealed Context object. The sealKey argument should not be null + * and should match sealKey supplied with the last call to {@link #seal(Object)} or + * an exception will be thrown. + * + * @see #isSealed() + * @see #seal(Object sealKey) + */ + @Override + public final void unseal(Object sealKey) { + if (sealKey == null) throw new IllegalArgumentException(); + if (this.sealKey != sealKey) throw new IllegalArgumentException(); + if (!sealed) throw new IllegalStateException(); + sealed = false; + this.sealKey = null; + } + + @SuppressWarnings("DoNotCallSuggester") + static void onSealedMutation() { + throw new IllegalStateException(); + } + + /** + * Get the current language version. + * + *

The language version number affects JavaScript semantics as detailed in the overview + * documentation. + * + * @return an integer that is one of VERSION_1_0, VERSION_1_1, etc. + */ + @Override + public final int getLanguageVersion() { + return version; + } + + /** + * Set the language version. + * + *

Setting the language version will affect functions and scripts compiled subsequently. See + * the overview documentation for version-specific behavior. The default version is {@link + * #VERSION_ES6}, which represents the newest ECMAScript features implemented by Rhino, minus + * some "const" and strict mode checks. + * + *

New projects should use either {@link #VERSION_ES6} or {@link #VERSION_ECMASCRIPT} unless + * a project needs backwards compatibility with older Rhino scripts that may depend on behaviors + * from the earlier history of JavaScript. + * + *

As of version 1.8, the Rhino community has no plans to continue to add new language + * versions, but instead plans to track the ECMAScript standard and add new features as the + * language evolves in new versions of Rhino, like other JavaScript engines. Projects that use + * Rhino are encouraged to migrate to the {@link #VERSION_ECMASCRIPT} version and stop relying + * on older behaviors of Rhino that are no longer compatible with ECMAScript. + * + * @param version the version as specified by VERSION_1_0, VERSION_1_1, etc. + */ + @Override + public void setLanguageVersion(int version) { + if (sealed) onSealedMutation(); + checkLanguageVersion(version); + Object listeners = propertyListeners; + if (listeners != null && version != this.version) { + firePropertyChangeImpl( + listeners, + languageVersionProperty, + Integer.valueOf(this.version), + Integer.valueOf(version)); + } + this.version = version; + } + + public static boolean isValidLanguageVersion(int version) { + switch (version) { + case VERSION_DEFAULT: + case VERSION_1_0: + case VERSION_1_1: + case VERSION_1_2: + case VERSION_1_3: + case VERSION_1_4: + case VERSION_1_5: + case VERSION_1_6: + case VERSION_1_7: + case VERSION_1_8: + case VERSION_ES6: + case VERSION_ECMASCRIPT: + return true; + } + return false; + } + + public static void checkLanguageVersion(int version) { + if (isValidLanguageVersion(version)) { + return; + } + throw new IllegalArgumentException("Bad language version: " + version); + } + + /** + * Get the implementation version. + * + *

The implementation version is of the form + * + * 

+     *    "name langVer release relNum date"
+     *
+ * + * where name is the name of the product, langVer is the language version, + * relNum is the release number, and date is the release date for that specific + * release in the form "yyyy mm dd". + * + * @return a string that encodes the product, language version, release number, and date. + */ + @Override + public final String getImplementationVersion() { + return ImplementationVersion.get(); + } + + /** + * Get the current error reporter. + * + * @see ErrorReporter + */ + @Override + public final ErrorReporter getErrorReporter() { + if (errorReporter == null) { + return DefaultErrorReporter.instance; + } + return errorReporter; + } + + /** + * Change the current error reporter. + * + * @return the previous error reporter + * @see ErrorReporter + */ + @Override + public final ErrorReporter setErrorReporter(ErrorReporter reporter) { + if (sealed) onSealedMutation(); + if (reporter == null) throw new IllegalArgumentException(); + ErrorReporter old = getErrorReporter(); + if (reporter == old) { + return old; + } + Object listeners = propertyListeners; + if (listeners != null) { + firePropertyChangeImpl( + listeners, errorReporterProperty, + old, reporter); + } + this.errorReporter = reporter; + return old; + } + + /** + * Get the current locale. Returns the default locale if none has been set. + * + * @see Locale + */ + @Override + public final Locale getLocale() { + if (locale == null) locale = Locale.getDefault(); + return locale; + } + + /** + * Set the current locale. + * + * @return the old value of the locale + * @see Locale + */ + @Override + public final Locale setLocale(Locale loc) { + if (sealed) onSealedMutation(); + Locale result = locale; + locale = loc; + return result; + } + + /** + * Get the current timezone. Returns the default timezone if none has been set. + * + * @return the old value of the timezone + * @see TimeZone + */ + @Override + public final TimeZone getTimeZone() { + if (timezone == null) timezone = TimeZone.getDefault(); + return timezone; + } + + /** + * Set the current timezone. + * + * @see TimeZone + */ + @Override + public final TimeZone setTimeZone(TimeZone tz) { + if (sealed) onSealedMutation(); + TimeZone result = timezone; + timezone = tz; + return result; + } + + /** + * Register an object to receive notifications when a bound property has changed + * + * @see PropertyChangeEvent + * @see #removePropertyChangeListener(PropertyChangeListener) + * @param l the listener + */ + @Override + public final void addPropertyChangeListener(PropertyChangeListener l) { + if (sealed) onSealedMutation(); + propertyListeners = Kit.addListener(propertyListeners, l); + } + + /** + * Remove an object from the list of objects registered to receive notification of changes to a + * bounded property + * + * @see PropertyChangeEvent + * @see #addPropertyChangeListener(PropertyChangeListener) + * @param l the listener + */ + @Override + public final void removePropertyChangeListener(PropertyChangeListener l) { + if (sealed) onSealedMutation(); + propertyListeners = Kit.removeListener(propertyListeners, l); + } + + /** + * Notify any registered listeners that a bounded property has changed + * + * @see #addPropertyChangeListener(PropertyChangeListener) + * @see #removePropertyChangeListener(PropertyChangeListener) + * @see PropertyChangeListener + * @see PropertyChangeEvent + * @param property the bound property + * @param oldValue the old value + * @param newValue the new value + */ + final void firePropertyChange(String property, Object oldValue, Object newValue) { + Object listeners = propertyListeners; + if (listeners != null) { + firePropertyChangeImpl(listeners, property, oldValue, newValue); + } + } + + private void firePropertyChangeImpl( + Object listeners, String property, Object oldValue, Object newValue) { + for (int i = 0; ; ++i) { + Object l = Kit.getListener(listeners, i); + if (l == null) break; + if (l instanceof PropertyChangeListener) { + PropertyChangeListener pcl = (PropertyChangeListener) l; + pcl.propertyChange(new PropertyChangeEvent(this, property, oldValue, newValue)); + } + } + } + + /** + * Report a warning using the error reporter for the current thread. + * + * @param message the warning message to report + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number + * @param lineSource the text of the line (may be null) + * @param lineOffset the offset into lineSource where problem was detected + * @see ErrorReporter + */ + public static void reportWarning( + String message, String sourceName, int lineno, String lineSource, int lineOffset) { + Context cx = Context.getContext(); + if (cx.hasFeature(FEATURE_WARNING_AS_ERROR)) + reportError(message, sourceName, lineno, lineSource, lineOffset); + else cx.getErrorReporter().warning(message, sourceName, lineno, lineSource, lineOffset); + } + + /** + * Report a warning using the error reporter for the current thread. + * + * @param message the warning message to report + * @see ErrorReporter + */ + public static void reportWarning(String message) { + int[] linep = {0}; + String filename = getSourcePositionFromStack(linep); + Context.reportWarning(message, filename, linep[0], null, 0); + } + + public static void reportWarning(String message, Throwable t) { + int[] linep = {0}; + String filename = getSourcePositionFromStack(linep); + Writer sw = new StringWriter(); + PrintWriter pw = new PrintWriter(sw); + pw.println(message); + t.printStackTrace(pw); + pw.flush(); + Context.reportWarning(sw.toString(), filename, linep[0], null, 0); + } + + /** + * Report an error using the error reporter for the current thread. + * + * @param message the error message to report + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number + * @param lineSource the text of the line (may be null) + * @param lineOffset the offset into lineSource where problem was detected + * @see ErrorReporter + */ + public static void reportError( + String message, String sourceName, int lineno, String lineSource, int lineOffset) { + Context cx = getCurrentContext(); + if (cx != null) { + cx.getErrorReporter().error(message, sourceName, lineno, lineSource, lineOffset); + } else { + throw new EvaluatorException(message, sourceName, lineno, lineSource, lineOffset); + } + } + + /** + * Report an error using the error reporter for the current thread. + * + * @param message the error message to report + * @see ErrorReporter + */ + public static void reportError(String message) { + int[] linep = {0}; + String filename = getSourcePositionFromStack(linep); + Context.reportError(message, filename, linep[0], null, 0); + } + + /** + * Report a runtime error using the error reporter for the current thread. + * + * @param message the error message to report + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number + * @param lineSource the text of the line (may be null) + * @param lineOffset the offset into lineSource where problem was detected + * @return a runtime exception that will be thrown to terminate the execution of the script + * @see ErrorReporter + */ + public static EvaluatorException reportRuntimeError( + String message, String sourceName, int lineno, String lineSource, int lineOffset) { + Context cx = getCurrentContext(); + if (cx != null) { + return cx.getErrorReporter() + .runtimeError(message, sourceName, lineno, lineSource, lineOffset); + } + throw new EvaluatorException(message, sourceName, lineno, lineSource, lineOffset); + } + + static EvaluatorException reportRuntimeErrorById(String messageId, Object... args) { + String msg = ScriptRuntime.getMessageById(messageId, args); + return reportRuntimeError(msg); + } + + /** + * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead + */ + @Deprecated + static EvaluatorException reportRuntimeError0(String messageId) { + String msg = ScriptRuntime.getMessageById(messageId); + return reportRuntimeError(msg); + } + + /** + * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead + */ + @Deprecated + static EvaluatorException reportRuntimeError1(String messageId, Object arg1) { + String msg = ScriptRuntime.getMessageById(messageId, arg1); + return reportRuntimeError(msg); + } + + /** + * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead + */ + @Deprecated + static EvaluatorException reportRuntimeError2(String messageId, Object arg1, Object arg2) { + String msg = ScriptRuntime.getMessageById(messageId, arg1, arg2); + return reportRuntimeError(msg); + } + + /** + * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead + */ + @Deprecated + static EvaluatorException reportRuntimeError3( + String messageId, Object arg1, Object arg2, Object arg3) { + String msg = ScriptRuntime.getMessageById(messageId, arg1, arg2, arg3); + return reportRuntimeError(msg); + } + + /** + * @deprecated Use {@link #reportRuntimeErrorById(String messageId, Object... args)} instead + */ + @Deprecated + static EvaluatorException reportRuntimeError4( + String messageId, Object arg1, Object arg2, Object arg3, Object arg4) { + String msg = ScriptRuntime.getMessageById(messageId, arg1, arg2, arg3, arg4); + return reportRuntimeError(msg); + } + + /** + * Report a runtime error using the error reporter for the current thread. + * + * @param message the error message to report + * @see ErrorReporter + */ + public static EvaluatorException reportRuntimeError(String message) { + int[] linep = {0}; + String filename = getSourcePositionFromStack(linep); + return Context.reportRuntimeError(message, filename, linep[0], null, 0); + } + + /** + * Initialize the standard objects. + * + *

Creates instances of the standard objects and their constructors (Object, String, Number, + * Date, etc.), setting up 'scope' to act as a global object as in ECMA 15.1. + * + *

This method must be called to initialize a scope before scripts can be evaluated in that + * scope. + * + *

This method does not affect the Context it is called upon. + * + * @return the initialized scope + */ + @Override + public final ScriptableObject initStandardObjects() { + return initStandardObjects(null, false); + } + + /** + * Initialize the standard objects, leaving out those that offer access directly to Java + * classes. This sets up "scope" to have access to all the standard JavaScript classes, but does + * not create global objects for any top-level Java packages. In addition, the "Packages," + * "JavaAdapter," and "JavaImporter" classes, and the "getClass" function, are not initialized. + * + *

The result of this function is a scope that may be safely used in a "sandbox" environment + * where it is not desirable to give access to Java code from JavaScript. + * + *

Creates instances of the standard objects and their constructors (Object, String, Number, + * Date, etc.), setting up 'scope' to act as a global object as in ECMA 15.1. + * + *

This method must be called to initialize a scope before scripts can be evaluated in that + * scope. + * + *

This method does not affect the Context it is called upon. + * + * @return the initialized scope + */ + @Override + public final ScriptableObject initSafeStandardObjects() { + return initSafeStandardObjects(null, false); + } + + /** + * Initialize the standard objects. + * + *

Creates instances of the standard objects and their constructors (Object, String, Number, + * Date, etc.), setting up 'scope' to act as a global object as in ECMA 15.1. + * + *

This method must be called to initialize a scope before scripts can be evaluated in that + * scope. + * + *

This method does not affect the Context it is called upon. + * + * @param scope the scope to initialize, or null, in which case a new object will be created to + * serve as the scope + * @return the initialized scope. The method returns the value of the scope argument if it is + * not null or newly allocated scope object which is an instance {@link ScriptableObject}. + */ + @Override + public final Scriptable initStandardObjects(ScriptableObject scope) { + return initStandardObjects(scope, false); + } + + /** + * Initialize the standard objects, leaving out those that offer access directly to Java + * classes. This sets up "scope" to have access to all the standard JavaScript classes, but does + * not create global objects for any top-level Java packages. In addition, the "Packages," + * "JavaAdapter," and "JavaImporter" classes, and the "getClass" function, are not initialized. + * + *

The result of this function is a scope that may be safely used in a "sandbox" environment + * where it is not desirable to give access to Java code from JavaScript. + * + *

Creates instances of the standard objects and their constructors (Object, String, Number, + * Date, etc.), setting up 'scope' to act as a global object as in ECMA 15.1. + * + *

This method must be called to initialize a scope before scripts can be evaluated in that + * scope. + * + *

This method does not affect the Context it is called upon. + * + * @param scope the scope to initialize, or null, in which case a new object will be created to + * serve as the scope + * @return the initialized scope. The method returns the value of the scope argument if it is + * not null or newly allocated scope object which is an instance {@link ScriptableObject}. + */ + @Override + public final Scriptable initSafeStandardObjects(ScriptableObject scope) { + return initSafeStandardObjects(scope, false); + } + + /** + * Initialize the standard objects. + * + *

Creates instances of the standard objects and their constructors (Object, String, Number, + * Date, etc.), setting up 'scope' to act as a global object as in ECMA 15.1. + * + *

This method must be called to initialize a scope before scripts can be evaluated in that + * scope. + * + *

This method does not affect the Context it is called upon. + * + *

This form of the method also allows for creating "sealed" standard objects. An object that + * is sealed cannot have properties added, changed, or removed. This is useful to create a + * "superglobal" that can be shared among several top-level objects. Note that sealing is not + * allowed in the current ECMA/ISO language specification, but is likely for the next version. + * + * @param scope the scope to initialize, or null, in which case a new object will be created to + * serve as the scope + * @param sealed whether or not to create sealed standard objects that cannot be modified. + * @return the initialized scope. The method returns the value of the scope argument if it is + * not null or newly allocated scope object. + * @since 1.4R3 + */ + @Override + public ScriptableObject initStandardObjects(ScriptableObject scope, boolean sealed) { + return ScriptRuntime.initStandardObjects(this, scope, sealed); + } + + /** + * Initialize the standard objects, leaving out those that offer access directly to Java + * classes. This sets up "scope" to have access to all the standard JavaScript classes, but does + * not create global objects for any top-level Java packages. In addition, the "Packages," + * "JavaAdapter," and "JavaImporter" classes, and the "getClass" function, are not initialized. + * + *

The result of this function is a scope that may be safely used in a "sandbox" environment + * where it is not desirable to give access to Java code from JavaScript. + * + *

Creates instances of the standard objects and their constructors (Object, String, Number, + * Date, etc.), setting up 'scope' to act as a global object as in ECMA 15.1. + * + *

This method must be called to initialize a scope before scripts can be evaluated in that + * scope. + * + *

This method does not affect the Context it is called upon. + * + *

This form of the method also allows for creating "sealed" standard objects. An object that + * is sealed cannot have properties added, changed, or removed. This is useful to create a + * "superglobal" that can be shared among several top-level objects. Note that sealing is not + * allowed in the current ECMA/ISO language specification, but is likely for the next version. + * + * @param scope the scope to initialize, or null, in which case a new object will be created to + * serve as the scope + * @param sealed whether or not to create sealed standard objects that cannot be modified. + * @return the initialized scope. The method returns the value of the scope argument if it is + * not null or newly allocated scope object. + * @since 1.7.6 + */ + @Override + public ScriptableObject initSafeStandardObjects(ScriptableObject scope, boolean sealed) { + return ScriptRuntime.initSafeStandardObjects(this, scope, sealed); + } + + /** Get the singleton object that represents the JavaScript Undefined value. */ + public static Object getUndefinedValue() { + return Undefined.instance; + } + + /** + * Evaluate a JavaScript source string. + * + *

The provided source name and line number are used for error messages and for producing + * debug information. + * + * @param scope the scope to execute in + * @param source the JavaScript source + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number + * @param securityDomain an arbitrary object that specifies security information about the + * origin or owner of the script. For implementations that don't care about security, this + * value may be null. + * @return the result of evaluating the string + * @see SecurityController + */ + @Override + public final Object evaluateString( + Scriptable scope, String source, String sourceName, int lineno, Object securityDomain) { + Script script = compileString(source, sourceName, lineno, securityDomain); + if (script != null) { + return script.exec(this, scope, scope); + } + return null; + } + + /** + * Evaluate a reader as JavaScript source. + * + *

All characters of the reader are consumed. + * + * @param scope the scope to execute in + * @param in the Reader to get JavaScript source from + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number + * @param securityDomain an arbitrary object that specifies security information about the + * origin or owner of the script. For implementations that don't care about security, this + * value may be null. + * @return the result of evaluating the source + * @exception IOException if an IOException was generated by the Reader + */ + @Override + public final Object evaluateReader( + Scriptable scope, Reader in, String sourceName, int lineno, Object securityDomain) + throws IOException { + Script script = compileReader(in, sourceName, lineno, securityDomain); + if (script != null) { + return script.exec(this, scope, scope); + } + return null; + } + + /** + * Execute script that may pause execution by capturing a continuation. Caller must be prepared + * to catch a ContinuationPending exception and resume execution by calling {@link + * #resumeContinuation(Object, Scriptable, Object)}. + * + * @param script The script to execute. Script must have been compiled with interpreted mode + * (optimization level -1) + * @param scope The scope to execute the script against + * @throws ContinuationPending if the script calls a function that results in a call to {@link + * #captureContinuation()} + * @since 1.7 Release 2 + */ + @Override + public Object executeScriptWithContinuations(Script script, Scriptable scope) + throws ContinuationPending { + if (!(script instanceof InterpretedFunction) + || !((InterpretedFunction) script).isScript()) { + // Can only be applied to scripts + throw new IllegalArgumentException( + "Script argument was not" + + " a script or was not created by interpreted mode "); + } + return callFunctionWithContinuations( + (InterpretedFunction) script, scope, ScriptRuntime.emptyArgs); + } + + /** + * Call function that may pause execution by capturing a continuation. Caller must be prepared + * to catch a ContinuationPending exception and resume execution by calling {@link + * #resumeContinuation(Object, Scriptable, Object)}. + * + * @param function The function to call. The function must have been compiled with interpreted + * mode (optimization level -1) + * @param scope The scope to execute the script against + * @param args The arguments for the function + * @throws ContinuationPending if the script calls a function that results in a call to {@link + * #captureContinuation()} + * @since 1.7 Release 2 + */ + @Override + public Object callFunctionWithContinuations(Callable function, Scriptable scope, Object[] args) + throws ContinuationPending { + if (!(function instanceof InterpretedFunction)) { + // Can only be applied to scripts + throw new IllegalArgumentException( + "Function argument was not" + " created by interpreted mode "); + } + if (ScriptRuntime.hasTopCall(this)) { + throw new IllegalStateException( + "Cannot have any pending top " + + "calls when executing a script with continuations"); + } + // Annotate so we can check later to ensure no java code in + // intervening frames + isContinuationsTopCall = true; + return ScriptRuntime.doTopCall(function, this, scope, scope, args, isTopLevelStrict); + } + + /** + * Capture a continuation from the current execution. The execution must have been started via a + * call to {@link #executeScriptWithContinuations(Script, Scriptable)} or {@link + * #callFunctionWithContinuations(Callable, Scriptable, Object[])}. This implies that the code + * calling this method must have been called as a function from the JavaScript script. Also, + * there cannot be any non-JavaScript code between the JavaScript frames (e.g., a call to + * eval()). The ContinuationPending exception returned must be thrown. + * + * @return A ContinuationPending exception that must be thrown + * @since 1.7 Release 2 + */ + @Override + public ContinuationPending captureContinuation() { + return new ContinuationPending(Interpreter.captureContinuation(this)); + } + + /** + * Restarts execution of the JavaScript suspended at the call to {@link #captureContinuation()}. + * Execution of the code will resume with the functionResult as the result of the call that + * captured the continuation. Execution of the script will either conclude normally and the + * result returned, another continuation will be captured and thrown, or the script will + * terminate abnormally and throw an exception. + * + * @param continuation The value returned by {@link ContinuationPending#getContinuation()} + * @param functionResult This value will appear to the code being resumed as the result of the + * function that captured the continuation + * @throws ContinuationPending if another continuation is captured before the code terminates + * @since 1.7 Release 2 + */ + @Override + public Object resumeContinuation(Object continuation, Scriptable scope, Object functionResult) + throws ContinuationPending { + Object[] args = {functionResult}; + return Interpreter.restartContinuation( + (NativeContinuation) continuation, this, scope, args); + } + + /** + * Check whether a string is ready to be compiled. + * + *

stringIsCompilableUnit is intended to support interactive compilation of JavaScript. If + * compiling the string would result in an error that might be fixed by appending more source, + * this method returns false. In every other case, it returns true. + * + *

Interactive shells may accumulate source lines, using this method after each new line is + * appended to check whether the statement being entered is complete. + * + * @param source the source buffer to check + * @return whether the source is ready for compilation + * @since 1.4 Release 2 + */ + @Override + public final boolean stringIsCompilableUnit(String source) { + boolean errorseen = false; + CompilerEnvirons compilerEnv = new CompilerEnvirons(); + compilerEnv.initFromContext(this); + // no source name or source text manager, because we're just + // going to throw away the result. + compilerEnv.setGeneratingSource(false); + Parser p = new Parser(compilerEnv, DefaultErrorReporter.instance); + try { + p.parse(source, null, 1); + } catch (EvaluatorException ee) { + errorseen = true; + } + // Return false only if an error occurred as a result of reading past + // the end of the file, i.e. if the source could be fixed by + // appending more source. + return !(errorseen && p.eof()); + } + + /** + * @deprecated + * @see #compileReader(Reader in, String sourceName, int lineno, Object securityDomain) + */ + @Deprecated + public final Script compileReader( + Scriptable scope, Reader in, String sourceName, int lineno, Object securityDomain) + throws IOException { + return compileReader(in, sourceName, lineno, securityDomain); + } + + /** + * Compiles the source in the given reader. + * + *

Returns a script that may later be executed. Will consume all the source in the reader. + * + * @param in the input reader + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number for reporting errors + * @param securityDomain an arbitrary object that specifies security information about the + * origin or owner of the script. For implementations that don't care about security, this + * value may be null. + * @return a script that may later be executed + * @exception IOException if an IOException was generated by the Reader + * @see Script + */ + @Override + public final Script compileReader( + Reader in, String sourceName, int lineno, Object securityDomain) throws IOException { + return compileReader(in, sourceName, lineno, securityDomain, null); + } + + @Override + public Script compileReader( + Reader in, + String sourceName, + int lineno, + Object securityDomain, + Consumer compilerEnvironsProcessor) + throws IOException { + if (lineno < 0) { + // For compatibility IllegalArgumentException can not be thrown here + lineno = 0; + } + + return (Script) + compileImpl( + null, + Kit.readReader(in), + sourceName, + lineno, + securityDomain, + false, + null, + null, + compilerEnvironsProcessor); + } + + /** + * Compiles the source in the given string. + * + *

Returns a script that may later be executed. + * + * @param source the source string + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number for reporting errors. Use 0 if the line number is + * unknown. + * @param securityDomain an arbitrary object that specifies security information about the + * origin or owner of the script. For implementations that don't care about security, this + * value may be null. + * @return a script that may later be executed + * @see Script + */ + @Override + public final Script compileString( + String source, String sourceName, int lineno, Object securityDomain) { + if (lineno < 0) { + // For compatibility IllegalArgumentException can not be thrown here + lineno = 0; + } + return compileString(source, null, null, sourceName, lineno, securityDomain, null); + } + + final Script compileString( + String source, + Evaluator compiler, + ErrorReporter compilationErrorReporter, + String sourceName, + int lineno, + Object securityDomain, + Consumer compilerEnvironsProcessor) { + return (Script) + compileImpl( + null, + source, + sourceName, + lineno, + securityDomain, + false, + compiler, + compilationErrorReporter, + compilerEnvironsProcessor); + } + + /** + * Compile a JavaScript function. + * + *

The function source must be a function definition as defined by ECMA (e.g., "function f(a) + * { return a; }"). + * + * @param scope the scope to compile relative to + * @param source the function definition source + * @param sourceName a string describing the source, such as a filename + * @param lineno the starting line number + * @param securityDomain an arbitrary object that specifies security information about the + * origin or owner of the script. For implementations that don't care about security, this + * value may be null. + * @return a Function that may later be called + * @see Function + */ + @Override + public final Function compileFunction( + Scriptable scope, String source, String sourceName, int lineno, Object securityDomain) { + return compileFunction(scope, source, null, null, sourceName, lineno, securityDomain); + } + + final Function compileFunction( + Scriptable scope, + String source, + Evaluator compiler, + ErrorReporter compilationErrorReporter, + String sourceName, + int lineno, + Object securityDomain) { + return (Function) + compileImpl( + scope, + source, + sourceName, + lineno, + securityDomain, + true, + compiler, + compilationErrorReporter, + null); + } + + /** + * Decompile the script. + * + *

The canonical source of the script is returned. + * + * @param script the script to decompile + * @param indent the number of spaces to indent the result + * @return a string representing the script source + */ + @Override + public final String decompileScript(Script script, int indent) { + NativeFunction scriptImpl = (NativeFunction) script; + return scriptImpl.decompile(indent, EnumSet.noneOf(DecompilerFlag.class)); + } + + /** + * Decompile a JavaScript Function. + * + *

Decompiles a previously compiled JavaScript function object to canonical source. + * + *

Returns function body of '[native code]' if no decompilation information is available. + * + * @param fun the JavaScript function to decompile + * @param indent the number of spaces to indent the result + * @return a string representing the function source + */ + @Override + public final String decompileFunction(Function fun, int indent) { + if (fun instanceof BaseFunction) + return ((BaseFunction) fun).decompile(indent, EnumSet.noneOf(DecompilerFlag.class)); + + return "function " + fun.getClassName() + "() {\n\t[native code]\n}\n"; + } + + /** + * Decompile the body of a JavaScript Function. + * + *

Decompiles the body a previously compiled JavaScript Function object to canonical source, + * omitting the function header and trailing brace. + * + *

Returns '[native code]' if no decompilation information is available. + * + * @param fun the JavaScript function to decompile + * @param indent the number of spaces to indent the result + * @return a string representing the function body source. + */ + @Override + public final String decompileFunctionBody(Function fun, int indent) { + if (fun instanceof BaseFunction) { + BaseFunction bf = (BaseFunction) fun; + return bf.decompile(indent, EnumSet.of(DecompilerFlag.ONLY_BODY)); + } + // ALERT: not sure what the right response here is. + return "[native code]\n"; + } + + /** + * Create a new JavaScript object. + * + *

Equivalent to evaluating "new Object()". + * + * @param scope the scope to search for the constructor and to evaluate against + * @return the new object + */ + @Override + public Scriptable newObject(Scriptable scope) { + NativeObject result = new NativeObject(); + ScriptRuntime.setBuiltinProtoAndParent(result, scope, TopLevel.Builtins.Object); + return result; + } + + /** + * Create a new JavaScript object by executing the named constructor. + * + *

The call newObject(scope, "Foo") is equivalent to evaluating "new Foo()". + * + * @param scope the scope to search for the constructor and to evaluate against + * @param constructorName the name of the constructor to call + * @return the new object + */ + @Override + public Scriptable newObject(Scriptable scope, String constructorName) { + return newObject(scope, constructorName, ScriptRuntime.emptyArgs); + } + + /** + * Creates a new JavaScript object by executing the named constructor. + * + *

Searches scope for the named constructor, calls it with the given arguments, + * and returns the result. + * + *

The code + * + * 

+     * Object[] args = { "a", "b" };
+     * newObject(scope, "Foo", args)
+ * + * is equivalent to evaluating "new Foo('a', 'b')", assuming that the Foo constructor has been + * defined in scope. + * + * @param scope The scope to search for the constructor and to evaluate against + * @param constructorName the name of the constructor to call + * @param args the array of arguments for the constructor + * @return the new object + */ + @Override + public Scriptable newObject(Scriptable scope, String constructorName, Object[] args) { + return ScriptRuntime.newObject(this, scope, constructorName, args); + } + + /** + * Create an array with a specified initial length. + * + * @param scope the scope to create the object in + * @param length the initial length (JavaScript arrays may have additional properties added + * dynamically). + * @return the new array object + */ + @Override + public Scriptable newArray(Scriptable scope, int length) { + NativeArray result = new NativeArray(length); + ScriptRuntime.setBuiltinProtoAndParent(result, scope, TopLevel.Builtins.Array); + return result; + } + + /** + * Create an array with a set of initial elements. + * + * @param scope the scope to create the object in. + * @param elements the initial elements. Each object in this array must be an acceptable + * JavaScript type and type of array should be exactly Object[], not SomeObjectSubclass[]. + * @return the new array object. + */ + @Override + public Scriptable newArray(Scriptable scope, Object[] elements) { + if (elements.getClass().getComponentType() != ScriptRuntime.ObjectClass) + throw new IllegalArgumentException(); + NativeArray result = new NativeArray(elements); + ScriptRuntime.setBuiltinProtoAndParent(result, scope, TopLevel.Builtins.Array); + return result; + } + + /** + * Get the elements of a JavaScript array. + * + *

If the object defines a length property convertible to double number, then the number is + * converted Uint32 value as defined in Ecma 9.6 and Java array of that size is allocated. The + * array is initialized with the values obtained by calling get() on object for each value of i + * in [0,length-1]. If there is not a defined value for a property the Undefined value is used + * to initialize the corresponding element in the array. The Java array is then returned. If the + * object doesn't define a length property or it is not a number, empty array is returned. + * + * @param object the JavaScript array or array-like object + * @return a Java array of objects + * @since 1.4 release 2 + */ + @Override + public final Object[] getElements(Scriptable object) { + return ScriptRuntime.getArrayElements(object); + } + + /** + * @deprecated + * @see #toObject(Object, Scriptable) + */ + @Deprecated + public static Scriptable toObject(Object value, Scriptable scope, Class staticType) { + return ScriptRuntime.toObject(scope, value); + } + + /** + * Convenient method to convert java value to its closest representation in JavaScript. + * + *

If value is an instance of String, Number, Boolean, Function or Scriptable, it is returned + * as it and will be treated as the corresponding JavaScript type of string, number, boolean, + * function and object. + * + *

Note that for Number instances during any arithmetic operation in JavaScript the engine + * will always use the result of Number.doubleValue() resulting in a precision loss + * if the number can not fit into double. + * + *

If value is an instance of Character, it will be converted to string of length 1 and its + * JavaScript type will be string. + * + *

The rest of values will be wrapped as LiveConnect objects by calling {@link + * WrapFactory#wrap(Context cx, Scriptable scope, Object obj, Class staticType)} as in: + * + * 

+     *    Context cx = Context.getCurrentContext();
+     *    return cx.getWrapFactory().wrap(cx, scope, value, null);
+     *
+ * + * @param value any Java object + * @param scope top scope object + * @return value suitable to pass to any API that takes JavaScript values. + */ + public static Object javaToJS(Object value, Scriptable scope) { + return javaToJS(value, scope, null); + } + + /** + * Convenient method to convert java value to its closest representation in JavaScript. + * + *

If value is an instance of String, Number, Boolean, Function or Scriptable, it is returned + * as it and will be treated as the corresponding JavaScript type of string, number, boolean, + * function and object. + * + *

Note that for Number instances during any arithmetic operation in JavaScript the engine + * will always use the result of Number.doubleValue() resulting in a precision loss + * if the number can not fit into double. + * + *

If value is an instance of Character, it will be converted to string of length 1 and its + * JavaScript type will be string. + * + *

The rest of values will be wrapped as LiveConnect objects by calling {@link + * WrapFactory#wrap(Context cx, Scriptable scope, Object obj, Class staticType)} as in: + * + * 

+     *    return cx.getWrapFactory().wrap(cx, scope, value, null);
+     *
+ * + * @param value any Java object + * @param scope top scope object + * @param cx context to use for wrapping LiveConnect objects + * @return value suitable to pass to any API that takes JavaScript values. + */ + public static Object javaToJS(Object value, Scriptable scope, Context cx) { + if (value instanceof String + || value instanceof Number + || value instanceof Boolean + || value instanceof Scriptable) { + return value; + } else if (value instanceof Character) { + return String.valueOf(((Character) value).charValue()); + } else { + if (cx == null) { + cx = Context.getContext(); + } + return cx.getWrapFactory().wrap(cx, scope, value, null); + } + } + + /** + * Convert a JavaScript value into the desired type. Uses the semantics defined with + * LiveConnect3 and throws an Illegal argument exception if the conversion cannot be performed. + * + * @param value the JavaScript value to convert + * @param desiredType the Java type to convert to. Primitive Java types are represented using + * the TYPE fields in the corresponding wrapper class in java.lang. + * @return the converted value + * @throws EvaluatorException if the conversion cannot be performed + */ + public static Object jsToJava(Object value, Class desiredType) throws EvaluatorException { + return jsToJava(value, TypeInfoFactory.GLOBAL.create(desiredType)); + } + + public static Object jsToJava(Object value, TypeInfo desiredType) throws EvaluatorException { + return NativeJavaObject.coerceTypeImpl(desiredType, value); + } + + /** + * @deprecated + * @see #jsToJava(Object, Class) + * @throws IllegalArgumentException if the conversion cannot be performed. Note that {@link + * #jsToJava(Object, Class)} throws {@link EvaluatorException} instead. + */ + @Deprecated + public static Object toType(Object value, Class desiredType) + throws IllegalArgumentException { + try { + return jsToJava(value, desiredType); + } catch (EvaluatorException ex) { + throw new IllegalArgumentException(ex.getMessage(), ex); + } + } + + /** + * Returns the javaToJSONConverter for this Context. + * + *

The converter is used by the JSON.stringify method for Java objects other than instances + * of {@link Map Map}, {@link java.util.Collection Collection}, or {@link Object Object[]}. + * + *

The default converter if unset will convert Java Objects to their toString() value. + * + * @return javaToJSONConverter for this Context + */ + @Override + public UnaryOperator getJavaToJSONConverter() { + if (javaToJSONConverter == null) { + return JavaToJSONConverters.STRING; + } + return javaToJSONConverter; + } + + /** + * Sets the javaToJSONConverter for this Context. + * + *

The converter is used by the JSON.stringify method for Java objects other than instances + * of {@link Map Map}, {@link java.util.Collection Collection}, or {@link Object Object[]}. + * + *

Objects returned by the converter will converted with {@link #javaToJS(Object, + * Scriptable)} and then stringified themselves. + * + * @param javaToJSONConverter + * @throws IllegalArgumentException if javaToJSONConverter is null + */ + @Override + public void setJavaToJSONConverter(UnaryOperator javaToJSONConverter) + throws IllegalArgumentException { + if (javaToJSONConverter == null) { + throw new IllegalArgumentException("javaToJSONConverter == null"); + } + this.javaToJSONConverter = javaToJSONConverter; + } + + /** + * Rethrow the exception wrapping it as the script runtime exception. Unless the exception is + * instance of {@link EcmaError} or {@link EvaluatorException} it will be wrapped as {@link + * WrappedException}, a subclass of {@link EvaluatorException}. The resulting exception object + * always contains source name and line number of script that triggered exception. + * + *

This method always throws an exception, its return value is provided only for convenience + * to allow a usage like: + * + * 

+     * throw Context.throwAsScriptRuntimeEx(ex);
+     *
+ * + * to indicate that code after the method is unreachable. + * + * @throws EvaluatorException + * @throws EcmaError + */ + public static RuntimeException throwAsScriptRuntimeEx(Throwable e) { + while ((e instanceof InvocationTargetException)) { + e = ((InvocationTargetException) e).getTargetException(); + } + // special handling of Error so scripts would not catch them + if (e instanceof Error) { + Context cx = getContext(); + if (cx == null || !cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS)) { + throw (Error) e; + } + } + if (e instanceof RhinoException) { + throw (RhinoException) e; + } + throw new WrappedException(e); + } + + /** + * Tell whether debug information is being generated. + * + * @since 1.3 + */ + @Override + public final boolean isGeneratingDebug() { + return generatingDebug; + } + + /** + * Specify whether or not debug information should be generated. + * + * @since 1.3 + */ + @Override + public final void setGeneratingDebug(boolean generatingDebug) { + if (sealed) onSealedMutation(); + generatingDebugChanged = true; + this.generatingDebug = generatingDebug; + } + + /** + * Tell whether source information is being generated. + * + * @since 1.3 + */ + @Override + public final boolean isGeneratingSource() { + return generatingSource; + } + + /** + * Specify whether or not source information should be generated. + * + *

Without source information, evaluating the "toString" method on JavaScript functions + * produces only "[native code]" for the body of the function. Note that code generated without + * source is not fully ECMA conformant. + * + * @since 1.3 + */ + @Override + public final void setGeneratingSource(boolean generatingSource) { + if (sealed) onSealedMutation(); + this.generatingSource = generatingSource; + } + + /** + * Get the current optimization level. + * + *

The optimization level is expressed as an integer between -1 and 9. Rhino now has only one + * optimization level, and we will always return either -1 or 9 here. + * + * @since 1.3 + * @deprecated As of 1.8.0, use {@link #isInterpretedMode()} instead. + */ + @Deprecated + public final int getOptimizationLevel() { + return interpretedMode ? -1 : 9; + } + + /** + * Return whether Rhino is running in interpreted mode. In this mode, Rhino does not generate + * bytecode, but runs much more slowly. Some platforms, notably Android, use this mode. + */ + @Override + public final boolean isInterpretedMode() { + return interpretedMode; + } + + /** + * Set the current optimization level. + * + *

This function previously set multiple modes today. Any value less than zero sets up + * interpreted mode, and otherwise we run in compiled mode. + * + * @param optimizationLevel an integer indicating the level of optimization to perform + * @since 1.3 + * @deprecated As of 1.8.0, use {@link #setInterpretedMode(boolean)} instead. + */ + @Deprecated + public final void setOptimizationLevel(int optimizationLevel) { + setInterpretedMode(optimizationLevel < 0); + } + + /** + * Set Rhino to run in interpreted mode. In this mode, Rhino does not generate bytecode, but + * runs much more slowly. Some platforms, notably Android, must use this mode because they + * cannot generate bytecode. + */ + @Override + public final void setInterpretedMode(boolean interpretedMode) { + if (sealed) onSealedMutation(); + this.interpretedMode = interpretedMode; + } + + /** + * @deprecated As of 1.8.0, no longer has any use. + */ + @Deprecated + public static boolean isValidOptimizationLevel(int optimizationLevel) { + return -1 <= optimizationLevel && optimizationLevel <= 9; + } + + /** + * @deprecated As of 1.8.0, no longer has any use. + */ + @Deprecated + public static void checkOptimizationLevel(int optimizationLevel) { + if (isValidOptimizationLevel(optimizationLevel)) { + return; + } + throw new IllegalArgumentException( + "Optimization level outside [-1..9]: " + optimizationLevel); + } + + /** + * Returns the maximum stack depth (in terms of number of call frames) allowed in a single + * invocation of interpreter. If the set depth would be exceeded, the interpreter will throw an + * EvaluatorException in the script. Defaults to Integer.MAX_VALUE. The setting only has effect + * for interpreted functions (those compiled with optimization level set to -1). As the + * interpreter doesn't use the Java stack but rather manages its own stack in the heap memory, a + * runaway recursion in interpreted code would eventually consume all available memory and cause + * OutOfMemoryError instead of a StackOverflowError limited to only a single thread. This + * setting helps prevent such situations. + * + * @return The current maximum interpreter stack depth. + */ + @Override + public final int getMaximumInterpreterStackDepth() { + return maximumInterpreterStackDepth; + } + + /** + * Sets the maximum stack depth (in terms of number of call frames) allowed in a single + * invocation of interpreter. If the set depth would be exceeded, the interpreter will throw an + * EvaluatorException in the script. Defaults to Integer.MAX_VALUE. The setting only has effect + * for interpreted functions (those compiled with optimization level set to -1). As the + * interpreter doesn't use the Java stack but rather manages its own stack in the heap memory, a + * runaway recursion in interpreted code would eventually consume all available memory and cause + * OutOfMemoryError instead of a StackOverflowError limited to only a single thread. This + * setting helps prevent such situations. + * + * @param max the new maximum interpreter stack depth + * @throws IllegalStateException if this context's optimization level is not -1 + * @throws IllegalArgumentException if the new depth is not at least 1 + */ + @Override + public final void setMaximumInterpreterStackDepth(int max) { + if (sealed) onSealedMutation(); + if (!interpretedMode) { + throw new IllegalStateException( + "Cannot set maximumInterpreterStackDepth outside interpreted mode"); + } + if (max < 1) { + throw new IllegalArgumentException( + "Cannot set maximumInterpreterStackDepth to less than 1"); + } + maximumInterpreterStackDepth = max; + } + + /** + * Set the security controller for this context. + * + *

SecurityController may only be set if it is currently null and {@link + * SecurityController#hasGlobal()} is false. Otherwise a SecurityException is + * thrown. + * + * @param controller a SecurityController object + * @throws SecurityException if there is already a SecurityController object for this Context or + * globally installed. + * @see SecurityController#initGlobal(SecurityController controller) + * @see SecurityController#hasGlobal() + */ + @Override + public final void setSecurityController(SecurityController controller) { + if (sealed) onSealedMutation(); + if (controller == null) throw new IllegalArgumentException(); + if (securityController != null) { + throw new SecurityException("Can not overwrite existing SecurityController object"); + } + if (SecurityController.hasGlobal()) { + throw new SecurityException( + "Can not overwrite existing global SecurityController object"); + } + securityController = controller; + } + + /** + * Set the LiveConnect access filter for this context. + * + *

{@link ClassShutter} may only be set if it is currently null. Otherwise a + * SecurityException is thrown. + * + * @param shutter a ClassShutter object + * @throws SecurityException if there is already a ClassShutter object for this Context + */ + @Override + public final synchronized void setClassShutter(ClassShutter shutter) { + if (sealed) onSealedMutation(); + if (shutter == null) throw new IllegalArgumentException(); + if (hasClassShutter) { + throw new SecurityException("Cannot overwrite existing " + "ClassShutter object"); + } + classShutter = shutter; + hasClassShutter = true; + } + + final synchronized ClassShutter getClassShutter() { + return classShutter; + } + + @Override + public final synchronized ClassShutterSetter getClassShutterSetter() { + if (hasClassShutter) return null; + hasClassShutter = true; + return new ClassShutterSetter() { + + @Override + public void setClassShutter(ClassShutter shutter) { + classShutter = shutter; + } + + @Override + public ClassShutter getClassShutter() { + return classShutter; + } + }; + } + + /** + * Get a value corresponding to a key. + * + *

Since the Context is associated with a thread it can be used to maintain values that can + * be later retrieved using the current thread. + * + *

Note that the values are maintained with the Context, so if the Context is disassociated + * from the thread the values cannot be retrieved. Also, if private data is to be maintained in + * this manner the key should be a java.lang.Object whose reference is not divulged to untrusted + * code. + * + * @param key the key used to lookup the value + * @return a value previously stored using putThreadLocal. + */ + @Override + public final Object getThreadLocal(Object key) { + if (threadLocalMap == null) return null; + return threadLocalMap.get(key); + } + + /** + * Put a value that can later be retrieved using a given key. + * + * @param key the key used to index the value + * @param value the value to save + */ + @Override + public final synchronized void putThreadLocal(Object key, Object value) { + if (sealed) onSealedMutation(); + if (threadLocalMap == null) threadLocalMap = new HashMap<>(); + threadLocalMap.put(key, value); + } + + /** + * Remove values from thread-local storage. + * + * @param key the key for the entry to remove. + * @since 1.5 release 2 + */ + @Override + public final void removeThreadLocal(Object key) { + if (sealed) onSealedMutation(); + if (threadLocalMap == null) return; + threadLocalMap.remove(key); + } + + /** + * @deprecated + * @see ClassCache#get(Scriptable) + * @see ClassCache#setCachingEnabled(boolean) + */ + @Deprecated + public static void setCachingEnabled(boolean cachingEnabled) {} + + /** + * Set a WrapFactory for this Context. + * + *

The WrapFactory allows custom object wrapping behavior for Java object manipulated with + * JavaScript. + * + * @see WrapFactory + * @since 1.5 Release 4 + */ + @Override + public final void setWrapFactory(WrapFactory wrapFactory) { + if (sealed) onSealedMutation(); + if (wrapFactory == null) throw new IllegalArgumentException(); + this.wrapFactory = wrapFactory; + } + + /** + * Return the current WrapFactory, or null if none is defined. + * + * @see WrapFactory + * @since 1.5 Release 4 + */ + @Override + public final WrapFactory getWrapFactory() { + if (wrapFactory == null) { + wrapFactory = new WrapFactory(); + } + return wrapFactory; + } + + /** + * Return the current debugger. + * + * @return the debugger, or null if none is attached. + */ + @Override + public final Debugger getDebugger() { + return debugger; + } + + /** + * Return the debugger context data associated with current context. + * + * @return the debugger data, or null if debugger is not attached + */ + @Override + public final Object getDebuggerContextData() { + return debuggerData; + } + + /** + * Set the associated debugger. + * + * @param debugger the debugger to be used on callbacks from the engine. + * @param contextData arbitrary object that debugger can use to store per Context data. + */ + @Override + public final void setDebugger(Debugger debugger, Object contextData) { + if (sealed) onSealedMutation(); + this.debugger = debugger; + debuggerData = contextData; + } + + /** + * Return DebuggableScript instance if any associated with the script. If callable supports + * DebuggableScript implementation, the method returns it. Otherwise null is returned. + */ + public static DebuggableScript getDebuggableView(Script script) { + if (script instanceof NativeFunction) { + return ((NativeFunction) script).getDebuggableView(); + } + return null; + } + + /** + * Controls certain aspects of script semantics. Should be overwritten to alter default + * behavior. + * + *

The default implementation calls {@link ContextFactory#hasFeature(Context cx, int + * featureIndex)} that allows to customize Context behavior without introducing Context + * subclasses. {@link ContextFactory} documentation gives an example of hasFeature + * implementation. + * + * @param featureIndex feature index to check + * @return true if the featureIndex feature is turned on + * @see #FEATURE_NON_ECMA_GET_YEAR + * @see #FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME + * @see #FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER + * @see #FEATURE_TO_STRING_AS_SOURCE + * @see #FEATURE_PARENT_PROTO_PROPRTIES + * @see #FEATURE_E4X + * @see #FEATURE_DYNAMIC_SCOPE + * @see #FEATURE_STRICT_VARS + * @see #FEATURE_STRICT_EVAL + * @see #FEATURE_LOCATION_INFORMATION_IN_ERROR + * @see #FEATURE_STRICT_MODE + * @see #FEATURE_WARNING_AS_ERROR + * @see #FEATURE_ENHANCED_JAVA_ACCESS + */ + @Override + public boolean hasFeature(int featureIndex) { + ContextFactory f = getFactory(); + return f.hasFeature(this, featureIndex); + } + + /** + * Returns an object which specifies an E4X implementation to use within this Context + * . Note that the XMLLib.Factory interface should be considered experimental. + * + *

The default implementation uses the implementation provided by this Context's + * {@link ContextFactory}. + * + *

This is no longer used in E4X -- an implementation is only provided for backward + * compatibility. + * + * @return An XMLLib.Factory. Should not return null if {@link #FEATURE_E4X} is + * enabled. See {@link #hasFeature}. + */ + @Deprecated + public XMLLib.Factory getE4xImplementationFactory() { + if (ScriptRuntime.xmlLoaderImpl != null) { + return ScriptRuntime.xmlLoaderImpl.getFactory(); + } + return null; + } + + /** + * Get threshold of executed instructions counter that triggers call to + * observeInstructionCount(). When the threshold is zero, instruction counting is + * disabled, otherwise each time the run-time executes at least the threshold value of script + * instructions, observeInstructionCount() will be called. + */ + @Override + public final int getInstructionObserverThreshold() { + return instructionThreshold; + } + + /** + * Set threshold of executed instructions counter that triggers call to + * observeInstructionCount(). When the threshold is zero, instruction counting is + * disabled, otherwise each time the run-time executes at least the threshold value of script + * instructions, observeInstructionCount() will be called.
+ * Note that the meaning of "instruction" is not guaranteed to be consistent between compiled + * and interpretive modes: executing a given script or function in the different modes will + * result in different instruction counts against the threshold. {@link + * #setGenerateObserverCount} is called with true if threshold is greater than + * zero, false otherwise. + * + * @param threshold The instruction threshold + */ + @Override + public final void setInstructionObserverThreshold(int threshold) { + if (sealed) onSealedMutation(); + if (threshold < 0) throw new IllegalArgumentException(); + instructionThreshold = threshold; + setGenerateObserverCount(threshold > 0); + } + + /** + * Turn on or off generation of code with callbacks to track the count of executed instructions. + * Currently only affects JVM byte code generation: this slows down the generated code, but code + * generated without the callbacks will not be counted toward instruction thresholds. Rhino's + * interpretive mode does instruction counting without inserting callbacks, so there is no + * requirement to compile code differently. + * + * @param generateObserverCount if true, generated code will contain calls to accumulate an + * estimate of the instructions executed. + */ + @Override + public void setGenerateObserverCount(boolean generateObserverCount) { + this.generateObserverCount = generateObserverCount; + } + + /** Determine if observer counts should be generated. */ + @Override + public boolean isGenerateObserverCount() { + return this.generateObserverCount; + } + + /** + * Allow application to monitor counter of executed script instructions in Context subclasses. + * Run-time calls this when instruction counting is enabled and the counter reaches limit set by + * setInstructionObserverThreshold(). The method is useful to observe long running + * scripts and if necessary to terminate them. + * + *

The default implementation calls {@link ContextFactory#observeInstructionCount(Context cx, + * int instructionCount)} that allows to customize Context behavior without introducing Context + * subclasses. + * + * @param instructionCount amount of script instruction executed since last call to + * observeInstructionCount + * @throws Error to terminate the script + * @see #setOptimizationLevel(int) + */ + protected void observeInstructionCount(int instructionCount) { + ContextFactory f = getFactory(); + f.observeInstructionCount(this, instructionCount); + } + + /** + * Create class loader for generated classes. The method calls {@link + * ContextFactory#createClassLoader(ClassLoader)} using the result of {@link #getFactory()}. + */ + @Override + public GeneratedClassLoader createClassLoader(ClassLoader parent) { + ContextFactory f = getFactory(); + return f.createClassLoader(parent); + } + + @Override + public final ClassLoader getApplicationClassLoader() { + if (applicationClassLoader == null) { + ContextFactory f = getFactory(); + ClassLoader loader = f.getApplicationClassLoader(); + if (loader == null) { + ClassLoader threadLoader = Thread.currentThread().getContextClassLoader(); + if (threadLoader != null && Kit.testIfCanLoadRhinoClasses(threadLoader)) { + // Thread.getContextClassLoader is not cached since + // its caching prevents it from GC which may lead to + // a memory leak and hides updates to + // Thread.getContextClassLoader + return threadLoader; + } + // Thread.getContextClassLoader can not load Rhino classes, + // try to use the loader of ContextFactory or Context + // subclasses. + Class fClass = f.getClass(); + if (fClass != ScriptRuntime.ContextFactoryClass) { + loader = fClass.getClassLoader(); + } else { + loader = getClass().getClassLoader(); + } + } + applicationClassLoader = loader; + } + return applicationClassLoader; + } + + @Override + public final void setApplicationClassLoader(ClassLoader loader) { + if (sealed) onSealedMutation(); + if (loader == null) { + // restore default behaviour + applicationClassLoader = null; + return; + } + if (!Kit.testIfCanLoadRhinoClasses(loader)) { + throw new IllegalArgumentException("Loader can not resolve Rhino classes"); + } + applicationClassLoader = loader; + } + + /** + * Add a task that will be executed at the end of the current operation. The various "evaluate" + * functions will all call this before exiting to ensure that all microtasks run to completion. + * Otherwise, callers should call "processMicrotasks" to run them all. This feature is primarily + * used to implement Promises. The microtask queue is not thread-safe. + */ + @Override + public void enqueueMicrotask(Runnable task) { + microtasks.add(task); + } + + /** + * Run all the microtasks for the current context to completion. This is called by the various + * "evaluate" functions. Frameworks that call Function objects directly should call this + * function to ensure that everything completes if they want all Promises to eventually resolve. + * This function is idempotent, but the microtask queue is not thread-safe. + */ + @Override + public void processMicrotasks() { + Runnable head; + do { + head = microtasks.poll(); + if (head != null) { + head.run(); + } + } while (head != null); + } + + /** + * Control whether to track unhandled promise rejections. If "track" is set to true, then the + * tracker returned by "getUnhandledPromiseTracker" must be periodically used to process the + * queue of unhandled promise rejections, or a memory leak may result. + * + * @param track if true, then track unhandled promise rejections + */ + @Override + public void setTrackUnhandledPromiseRejections(boolean track) { + unhandledPromises.enable(track); + } + + /** + * Return the object used to track unhandled promise rejections. + * + * @return the tracker object + */ + @Override + public UnhandledRejectionTracker getUnhandledPromiseTracker() { + return unhandledPromises; + } + + /* ******** end of API ********* */ + + /** Internal method that reports an error for missing calls to enter(). */ + static Context getContext() { + Context cx = getCurrentContext(); + if (cx == null) { + throw new RuntimeException("No Context associated with current Thread"); + } + return cx; + } + + protected Object compileImpl( + Scriptable scope, + String sourceString, + String sourceName, + int lineno, + Object securityDomain, + boolean returnFunction, + Evaluator compiler, + ErrorReporter compilationErrorReporter, + Consumer compilerEnvironProcessor) { + if (sourceName == null) { + sourceName = "unnamed script"; + } + if (securityDomain != null && getSecurityController() == null) { + throw new IllegalArgumentException( + "securityDomain should be null if setSecurityController() was never called"); + } + + // scope should be given if and only if compiling function + if (!(scope == null ^ returnFunction)) Kit.codeBug(); + + CompilerEnvirons compilerEnv = new CompilerEnvirons(); + compilerEnv.initFromContext(this); + if (compilationErrorReporter == null) { + compilationErrorReporter = compilerEnv.getErrorReporter(); + } + if (compilerEnvironProcessor != null) { + compilerEnvironProcessor.accept(compilerEnv); + } + + ScriptNode tree = + parse( + sourceString, + sourceName, + lineno, + compilerEnv, + compilationErrorReporter, + returnFunction); + + Object bytecode; + try { + if (compiler == null) { + compiler = createCompiler(); + } + + bytecode = compiler.compile(compilerEnv, tree, sourceString, returnFunction); + } catch (ClassFileFormatException e) { + // we hit some class file limit, fall back to interpreter or report + + // we have to recreate the tree because the compile call might have changed the tree + // already + tree = + parse( + sourceString, + sourceName, + lineno, + compilerEnv, + compilationErrorReporter, + returnFunction); + + compiler = createInterpreter(); + bytecode = compiler.compile(compilerEnv, tree, sourceString, returnFunction); + } + + if (debugger != null) { + if (sourceString == null) Kit.codeBug(); + if (bytecode instanceof DebuggableScript) { + DebuggableScript dscript = (DebuggableScript) bytecode; + notifyDebugger_r(this, dscript, sourceString); + } else { + throw new RuntimeException("NOT SUPPORTED"); + } + } + + Object result; + if (returnFunction) { + result = compiler.createFunctionObject(this, scope, bytecode, securityDomain); + } else { + result = compiler.createScriptObject(bytecode, securityDomain); + } + + return result; + } + + private ScriptNode parse( + String sourceString, + String sourceName, + int lineno, + CompilerEnvirons compilerEnv, + ErrorReporter compilationErrorReporter, + boolean returnFunction) { + Parser p = new Parser(compilerEnv, compilationErrorReporter); + if (returnFunction) { + p.calledByCompileFunction = true; + } + if (isStrictMode()) { + p.setDefaultUseStrictDirective(true); + } + + AstRoot ast = p.parse(sourceString, sourceName, lineno); + if (returnFunction) { + // parser no longer adds function to script node + if (!(ast.getFirstChild() != null && ast.getFirstChild().getType() == Token.FUNCTION)) { + // XXX: the check just looks for the first child + // and allows for more nodes after it for compatibility + // with sources like function() {};;; + throw new IllegalArgumentException( + "compileFunction only accepts source with single JS function: " + + sourceString); + } + } + + IRFactory irf = + new IRFactory(compilerEnv, sourceName, sourceString, compilationErrorReporter); + ScriptNode tree = irf.transformTree(ast); + + if (compilerEnv.isGeneratingSource()) { + tree.setRawSource(sourceString); + tree.setRawSourceBounds(0, sourceString.length()); + } + + return tree; + } + + private static void notifyDebugger_r(Context cx, DebuggableScript dscript, String debugSource) { + cx.impl().debugger.handleCompilationDone(cx, dscript, debugSource); + for (int i = 0; i != dscript.getFunctionCount(); ++i) { + notifyDebugger_r(cx, dscript.getFunction(i), debugSource); + } + } + + private static Class codegenClass = + Kit.classOrNull("org.mozilla.javascript.optimizer.Codegen"); + private static Class interpreterClass = + Kit.classOrNull("org.mozilla.javascript.Interpreter"); + + private Evaluator createCompiler() { + Evaluator result = null; + if (!interpretedMode && codegenClass != null) { + result = (Evaluator) Kit.newInstanceOrNull(codegenClass); + } + if (result == null) { + result = createInterpreter(); + } + return result; + } + + static Evaluator createInterpreter() { + return (Evaluator) Kit.newInstanceOrNull(interpreterClass); + } + + static String getSourcePositionFromStack(int[] linep) { + Context cx = getCurrentContext(); + if (cx == null) return null; + if (cx.impl().lastInterpreterFrame != null) { + Evaluator evaluator = createInterpreter(); + if (evaluator != null) return evaluator.getSourcePositionFromStack(cx, linep); + } + + return getSourcePositionFromJavaStack(linep); + } + + /** Returns the current filename in the java stack. */ + static String getSourcePositionFromJavaStack(int[] linep) { + StackTraceElement[] stack = new Throwable().getStackTrace(); + for (StackTraceElement e : stack) { + if (frameMatches(e)) { + linep[0] = e.getLineNumber(); + return e.getFileName(); + } + } + return null; + } + + private static boolean frameMatches(StackTraceElement e) { + return (e.getFileName() == null || !e.getFileName().endsWith(".java")) + && e.getLineNumber() > 0; + } + + RegExpProxy getRegExpProxy() { + if (regExpProxy == null && regExpLoader != null) { + regExpProxy = regExpLoader.newProxy(); + } + return regExpProxy; + } + + final boolean isVersionECMA1() { + return version == VERSION_DEFAULT || version >= VERSION_1_3; + } + + // The method must NOT be public or protected + SecurityController getSecurityController() { + SecurityController global = SecurityController.global(); + if (global != null) { + return global; + } + return securityController; + } + + @Override + public final boolean isGeneratingDebugChanged() { + return generatingDebugChanged; + } + + /** + * Add a name to the list of names forcing the creation of real activation objects for + * functions. + * + * @param name the name of the object to add to the list + */ + @Override + public void addActivationName(String name) { + if (sealed) onSealedMutation(); + if (activationNames == null) activationNames = new HashSet<>(); + activationNames.add(name); + } + + /** + * Check whether the name is in the list of names of objects forcing the creation of activation + * objects. + * + * @param name the name of the object to test + * @return true if an function activation object is needed. + */ + @Override + public final boolean isActivationNeeded(String name) { + return activationNames != null && activationNames.contains(name); + } + + /** + * Remove a name from the list of names forcing the creation of real activation objects for + * functions. + * + * @param name the name of the object to remove from the list + */ + @Override + public void removeActivationName(String name) { + if (sealed) onSealedMutation(); + if (activationNames != null) activationNames.remove(name); + } + + @Override + public final boolean isStrictMode() { + return isTopLevelStrict + || (currentActivationCall != null && currentActivationCall.isStrict); + } + + public static boolean isCurrentContextStrict() { + Context cx = getCurrentContext(); + if (cx == null) { + return false; + } + return cx.isStrictMode(); + } + + @Override + public ContextImpl impl() { + return this; + } + + private final ContextFactory factory; + private boolean sealed; + private Object sealKey; + + Scriptable topCallScope; + boolean isContinuationsTopCall; + NativeCall currentActivationCall; + XMLLib cachedXMLLib; + BaseFunction typeErrorThrower; + + // for Objects, Arrays to tag themselves as being printed out, + // so they don't print themselves out recursively. + // Use ObjToIntMap instead of java.util.HashSet for JDK 1.1 compatibility + Set iterating; + + Object interpreterSecurityDomain; + + int version; + + private SecurityController securityController; + private boolean hasClassShutter; + private ClassShutter classShutter; + private ErrorReporter errorReporter; + RegExpProxy regExpProxy; + private Locale locale; + private TimeZone timezone; + private boolean generatingDebug; + private boolean generatingDebugChanged; + private boolean generatingSource = true; + boolean useDynamicScope; + private boolean interpretedMode; + private int maximumInterpreterStackDepth; + private WrapFactory wrapFactory; + Debugger debugger; + private Object debuggerData; + private Object propertyListeners; + private Map threadLocalMap; + private ClassLoader applicationClassLoader; + private UnaryOperator javaToJSONConverter; + private final ArrayDeque microtasks = new ArrayDeque<>(); + private final UnhandledRejectionTracker unhandledPromises = new UnhandledRejectionTracker(); + + /** This is the list of names of objects forcing the creation of function activation records. */ + Set activationNames; + + // For the interpreter to store the last frame for error reports + // etc. Previous frames can all be derived from this. + Object lastInterpreterFrame; + + // For instruction counting (interpreter only) + int instructionCount; + int instructionThreshold; + + // It can be used to return the second uint32 result from function + long scratchUint32; + + // It can be used to return the second Scriptable result from function + Scriptable scratchScriptable; + + // Generate an observer count on compiled code + boolean generateObserverCount = false; + + boolean isTopLevelStrict; +} diff --git a/rhino/src/main/java/org/mozilla/javascript/ContextNested.java b/rhino/src/main/java/org/mozilla/javascript/ContextNested.java new file mode 100644 index 0000000000..9bd9cf2a24 --- /dev/null +++ b/rhino/src/main/java/org/mozilla/javascript/ContextNested.java @@ -0,0 +1,440 @@ +package org.mozilla.javascript; + +import java.beans.PropertyChangeListener; +import java.io.IOException; +import java.io.Reader; +import java.util.Locale; +import java.util.TimeZone; +import java.util.function.Consumer; +import java.util.function.UnaryOperator; +import org.mozilla.javascript.debug.Debugger; + +public class ContextNested implements Context { + private final Context delegate; + + protected ContextNested(Context delegate) { + this.delegate = delegate; + } + + @Override + public boolean isStrictMode() { + return delegate.isStrictMode(); + } + + @Override + public boolean isActivationNeeded(String name) { + return delegate.isActivationNeeded(name); + } + + @Override + public boolean isGeneratingDebugChanged() { + return delegate.isGeneratingDebugChanged(); + } + + @Override + public void setApplicationClassLoader(ClassLoader loader) { + delegate.setApplicationClassLoader(loader); + } + + @Override + public ClassLoader getApplicationClassLoader() { + return delegate.getApplicationClassLoader(); + } + + @Override + public void setInstructionObserverThreshold(int threshold) { + delegate.setInstructionObserverThreshold(threshold); + } + + @Override + public int getInstructionObserverThreshold() { + return delegate.getInstructionObserverThreshold(); + } + + @Override + public void setDebugger(Debugger debugger, Object contextData) { + delegate.setDebugger(debugger, contextData); + } + + @Override + public Object getDebuggerContextData() { + return delegate.getDebuggerContextData(); + } + + @Override + public Debugger getDebugger() { + return delegate.getDebugger(); + } + + @Override + public WrapFactory getWrapFactory() { + return delegate.getWrapFactory(); + } + + @Override + public void setWrapFactory(WrapFactory wrapFactory) { + delegate.setWrapFactory(wrapFactory); + } + + @Override + public void removeThreadLocal(Object key) { + delegate.removeThreadLocal(key); + } + + @Override + public void putThreadLocal(Object key, Object value) { + delegate.putThreadLocal(key, value); + } + + @Override + public Object getThreadLocal(Object key) { + return delegate.getThreadLocal(key); + } + + @Override + public ClassShutterSetter getClassShutterSetter() { + return delegate.getClassShutterSetter(); + } + + @Override + public void setClassShutter(ClassShutter shutter) { + delegate.setClassShutter(shutter); + } + + @Override + public void setSecurityController(SecurityController controller) { + delegate.setSecurityController(controller); + } + + @Override + public void setMaximumInterpreterStackDepth(int max) { + delegate.setMaximumInterpreterStackDepth(max); + } + + @Override + public int getMaximumInterpreterStackDepth() { + return delegate.getMaximumInterpreterStackDepth(); + } + + @Override + public void setInterpretedMode(boolean interpretedMode) { + delegate.setInterpretedMode(interpretedMode); + } + + @Override + public boolean isInterpretedMode() { + return delegate.isInterpretedMode(); + } + + @Override + public void setGeneratingSource(boolean generatingSource) { + delegate.setGeneratingSource(generatingSource); + } + + @Override + public boolean isGeneratingSource() { + return delegate.isGeneratingSource(); + } + + @Override + public void setGeneratingDebug(boolean generatingDebug) { + delegate.setGeneratingDebug(generatingDebug); + } + + @Override + public boolean isGeneratingDebug() { + return delegate.isGeneratingDebug(); + } + + @Override + public Object[] getElements(Scriptable object) { + return delegate.getElements(object); + } + + @Override + public String decompileFunctionBody(Function fun, int indent) { + return delegate.decompileFunctionBody(fun, indent); + } + + @Override + public String decompileFunction(Function fun, int indent) { + return delegate.decompileFunction(fun, indent); + } + + @Override + public String decompileScript(Script script, int indent) { + return delegate.decompileScript(script, indent); + } + + @Override + public Function compileFunction( + Scriptable scope, String source, String sourceName, int lineno, Object securityDomain) { + return delegate.compileFunction(scope, source, sourceName, lineno, securityDomain); + } + + @Override + public Script compileString( + String source, String sourceName, int lineno, Object securityDomain) { + return delegate.compileString(source, sourceName, lineno, securityDomain); + } + + @Override + public Script compileReader(Reader in, String sourceName, int lineno, Object securityDomain) + throws IOException { + return delegate.compileReader(in, sourceName, lineno, securityDomain); + } + + @Override + public boolean stringIsCompilableUnit(String source) { + return delegate.stringIsCompilableUnit(source); + } + + @Override + public Object evaluateReader( + Scriptable scope, Reader in, String sourceName, int lineno, Object securityDomain) + throws IOException { + return delegate.evaluateReader(scope, in, sourceName, lineno, securityDomain); + } + + @Override + public Object evaluateString( + Scriptable scope, String source, String sourceName, int lineno, Object securityDomain) { + return delegate.evaluateString(scope, source, sourceName, lineno, securityDomain); + } + + @Override + public Scriptable initSafeStandardObjects(ScriptableObject scope) { + return delegate.initSafeStandardObjects(scope); + } + + @Override + public Scriptable initStandardObjects(ScriptableObject scope) { + return delegate.initStandardObjects(scope); + } + + @Override + public ScriptableObject initSafeStandardObjects() { + return delegate.initSafeStandardObjects(); + } + + @Override + public ScriptableObject initStandardObjects() { + return delegate.initStandardObjects(); + } + + @Override + public void removePropertyChangeListener(PropertyChangeListener l) { + delegate.removePropertyChangeListener(l); + } + + @Override + public void addPropertyChangeListener(PropertyChangeListener l) { + delegate.addPropertyChangeListener(l); + } + + @Override + public TimeZone setTimeZone(TimeZone tz) { + return delegate.setTimeZone(tz); + } + + @Override + public TimeZone getTimeZone() { + return delegate.getTimeZone(); + } + + @Override + public Locale setLocale(Locale loc) { + return delegate.setLocale(loc); + } + + @Override + public Locale getLocale() { + return delegate.getLocale(); + } + + @Override + public ErrorReporter setErrorReporter(ErrorReporter reporter) { + return delegate.setErrorReporter(reporter); + } + + @Override + public ErrorReporter getErrorReporter() { + return delegate.getErrorReporter(); + } + + @Override + public String getImplementationVersion() { + return delegate.getImplementationVersion(); + } + + @Override + public int getLanguageVersion() { + return delegate.getLanguageVersion(); + } + + @Override + public void unseal(Object sealKey) { + delegate.unseal(sealKey); + } + + @Override + public void seal(Object sealKey) { + delegate.seal(sealKey); + } + + @Override + public boolean isSealed() { + return delegate.isSealed(); + } + + @Override + public ContextFactory getFactory() { + return delegate.getFactory(); + } + + @Override + public ContextImpl impl() { + return delegate.impl(); + } + + @Override + public void removeActivationName(String name) { + delegate.removeActivationName(name); + } + + @Override + public void addActivationName(String name) { + delegate.addActivationName(name); + } + + @Override + public UnhandledRejectionTracker getUnhandledPromiseTracker() { + return delegate.getUnhandledPromiseTracker(); + } + + @Override + public void setTrackUnhandledPromiseRejections(boolean track) { + delegate.setTrackUnhandledPromiseRejections(track); + } + + @Override + public void processMicrotasks() { + delegate.processMicrotasks(); + } + + @Override + public void enqueueMicrotask(Runnable task) { + delegate.enqueueMicrotask(task); + } + + @Override + public GeneratedClassLoader createClassLoader(ClassLoader parent) { + return delegate.createClassLoader(parent); + } + + @Override + public boolean isGenerateObserverCount() { + return delegate.isGenerateObserverCount(); + } + + @Override + public void setGenerateObserverCount(boolean generateObserverCount) { + delegate.setGenerateObserverCount(generateObserverCount); + } + + @Override + public boolean hasFeature(int featureIndex) { + return delegate.hasFeature(featureIndex); + } + + @Override + public void setJavaToJSONConverter(UnaryOperator javaToJSONConverter) + throws IllegalArgumentException { + delegate.setJavaToJSONConverter(javaToJSONConverter); + } + + @Override + public UnaryOperator getJavaToJSONConverter() { + return delegate.getJavaToJSONConverter(); + } + + @Override + public Scriptable newArray(Scriptable scope, Object[] elements) { + return delegate.newArray(scope, elements); + } + + @Override + public Scriptable newArray(Scriptable scope, int length) { + return delegate.newArray(scope, length); + } + + @Override + public Scriptable newObject(Scriptable scope, String constructorName, Object[] args) { + return delegate.newObject(scope, constructorName, args); + } + + @Override + public Scriptable newObject(Scriptable scope, String constructorName) { + return delegate.newObject(scope, constructorName); + } + + @Override + public Scriptable newObject(Scriptable scope) { + return delegate.newObject(scope); + } + + @Override + public Script compileReader( + Reader in, + String sourceName, + int lineno, + Object securityDomain, + Consumer compilerEnvironsProcessor) + throws IOException { + return delegate.compileReader( + in, sourceName, lineno, securityDomain, compilerEnvironsProcessor); + } + + @Override + public Object resumeContinuation(Object continuation, Scriptable scope, Object functionResult) + throws ContinuationPending { + return delegate.resumeContinuation(continuation, scope, functionResult); + } + + @Override + public ContinuationPending captureContinuation() { + return delegate.captureContinuation(); + } + + @Override + public Object callFunctionWithContinuations(Callable function, Scriptable scope, Object[] args) + throws ContinuationPending { + return delegate.callFunctionWithContinuations(function, scope, args); + } + + @Override + public Object executeScriptWithContinuations(Script script, Scriptable scope) + throws ContinuationPending { + return delegate.executeScriptWithContinuations(script, scope); + } + + @Override + public ScriptableObject initSafeStandardObjects(ScriptableObject scope, boolean sealed) { + return delegate.initSafeStandardObjects(scope, sealed); + } + + @Override + public ScriptableObject initStandardObjects(ScriptableObject scope, boolean sealed) { + return delegate.initStandardObjects(scope, sealed); + } + + @Override + public void setLanguageVersion(int version) { + delegate.setLanguageVersion(version); + } + + @Override + public void close() { + // NO-OP! + } +} diff --git a/rhino/src/main/java/org/mozilla/javascript/InterpretedFunction.java b/rhino/src/main/java/org/mozilla/javascript/InterpretedFunction.java index c347126ec3..0bdb3c79ec 100644 --- a/rhino/src/main/java/org/mozilla/javascript/InterpretedFunction.java +++ b/rhino/src/main/java/org/mozilla/javascript/InterpretedFunction.java @@ -22,7 +22,7 @@ private InterpretedFunction(InterpreterData idata, Object staticSecurityDomain) // avoid security breaches via passing mangled Context instances // with bogus SecurityController Context cx = Context.getContext(); - SecurityController sc = cx.getSecurityController(); + SecurityController sc = cx.impl().getSecurityController(); Object dynamicDomain; if (sc != null) { dynamicDomain = sc.getDynamicSecurityDomain(staticSecurityDomain); diff --git a/rhino/src/main/java/org/mozilla/javascript/Interpreter.java b/rhino/src/main/java/org/mozilla/javascript/Interpreter.java index 78e1d0350d..af2cefd95e 100644 --- a/rhino/src/main/java/org/mozilla/javascript/Interpreter.java +++ b/rhino/src/main/java/org/mozilla/javascript/Interpreter.java @@ -93,7 +93,7 @@ private static class CallFrame implements Cloneable, Serializable { CallFrame parentFrame, CallFrame previousInterpreterFrame) { idata = fnOrScript.idata; - debuggerFrame = cx.debugger != null ? cx.debugger.getFrame(cx, idata) : null; + debuggerFrame = cx.impl().debugger != null ? cx.impl().debugger.getFrame(cx, idata) : null; useActivation = debuggerFrame != null || idata.itsNeedsActivation; emptyStackTop = (short) (idata.itsMaxVars + idata.itsMaxLocals - 1); @@ -1043,17 +1043,17 @@ static int[] getLineNumbers(InterpreterData data) { @Override public void captureStackInfo(RhinoException ex) { Context cx = Context.getCurrentContext(); - if (cx == null || cx.lastInterpreterFrame == null) { + if (cx == null || cx.impl().lastInterpreterFrame == null) { // No interpreter invocations ex.interpreterStackInfo = null; } else { - ex.interpreterStackInfo = cx.lastInterpreterFrame; + ex.interpreterStackInfo = cx.impl().lastInterpreterFrame; } } @Override public String getSourcePositionFromStack(Context cx, int[] linep) { - CallFrame frame = (CallFrame) cx.lastInterpreterFrame; + CallFrame frame = (CallFrame) cx.impl().lastInterpreterFrame; InterpreterData idata = frame.idata; if (frame.pcSourceLineStart >= 0) { linep[0] = getIndex(idata.itsICode, frame.pcSourceLineStart); @@ -1191,14 +1191,14 @@ static Object interpret( Object[] args) { if (!ScriptRuntime.hasTopCall(cx)) Kit.codeBug(); - if (cx.interpreterSecurityDomain != ifun.securityDomain) { - Object savedDomain = cx.interpreterSecurityDomain; - cx.interpreterSecurityDomain = ifun.securityDomain; + if (cx.impl().interpreterSecurityDomain != ifun.securityDomain) { + Object savedDomain = cx.impl().interpreterSecurityDomain; + cx.impl().interpreterSecurityDomain = ifun.securityDomain; try { return ifun.securityController.callWithDomain( ifun.securityDomain, cx, ifun, scope, thisObj, args); } finally { - cx.interpreterSecurityDomain = savedDomain; + cx.impl().interpreterSecurityDomain = savedDomain; } } @@ -1215,8 +1215,8 @@ static Object interpret( args.length, ifun, null); - frame.isContinuationsTopFrame = cx.isContinuationsTopCall; - cx.isContinuationsTopCall = false; + frame.isContinuationsTopFrame = cx.impl().isContinuationsTopCall; + cx.impl().isContinuationsTopCall = false; return interpretLoop(cx, frame, null); } @@ -1235,7 +1235,7 @@ static class GeneratorState { public static Object resumeGenerator( Context cx, Scriptable scope, int operation, Object savedState, Object value) { CallFrame frame = (CallFrame) savedState; - CallFrame activeFrame = frame.shallowCloneFrozen((CallFrame) cx.lastInterpreterFrame); + CallFrame activeFrame = frame.shallowCloneFrozen((CallFrame) cx.impl().lastInterpreterFrame); try { GeneratorState generatorState = new GeneratorState(operation, value); if (operation == NativeGenerator.GENERATOR_CLOSE) { @@ -1258,7 +1258,7 @@ public static Object resumeGenerator( public static Object restartContinuation( NativeContinuation c, Context cx, Scriptable scope, Object[] args) { if (!ScriptRuntime.hasTopCall(cx)) { - return ScriptRuntime.doTopCall(c, cx, scope, null, args, cx.isTopLevelStrict); + return ScriptRuntime.doTopCall(c, cx, scope, null, args, cx.impl().isTopLevelStrict); } Object arg; @@ -1538,13 +1538,13 @@ private abstract static class InstructionClass { } private static Object interpretLoop(Context cx, CallFrame frame, Object throwable) { - final Object oldFrame = cx.lastInterpreterFrame; + final Object oldFrame = cx.impl().lastInterpreterFrame; try { // throwable holds exception object to rethrow or catch // It is also used for continuation restart in which case // it holds ContinuationJump - final boolean instructionCounting = cx.instructionThreshold != 0; + final boolean instructionCounting = cx.impl().instructionThreshold != 0; String stringReg = null; BigInteger bigIntReg = null; @@ -1757,12 +1757,12 @@ private static Object interpretLoop(Context cx, CallFrame frame, Object throwabl // Do cleanups/restorations before the final return or throw if (frame != null) { - cx.lastInterpreterFrame = + cx.impl().lastInterpreterFrame = frame.parentFrame == null ? frame.previousInterpreterFrame : frame.parentFrame; } else { - cx.lastInterpreterFrame = null; + cx.impl().lastInterpreterFrame = null; } if (throwable != null) { @@ -1777,7 +1777,7 @@ private static Object interpretLoop(Context cx, CallFrame frame, Object throwabl ? interpreterResult : ScriptRuntime.wrapNumber(interpreterResultDbl); } finally { - cx.lastInterpreterFrame = oldFrame; + cx.impl().lastInterpreterFrame = oldFrame; } } @@ -1804,7 +1804,7 @@ private static InterpreterResult interpretFunction( state.throwable = tble; // Store new frame in cx which is used for error reporting etc. - cx.lastInterpreterFrame = frame; + cx.impl().lastInterpreterFrame = frame; Loop: for (; ; ) { @@ -3174,7 +3174,7 @@ NewState execute(Context cx, CallFrame frame, InterpreterState state, int op) { boolean isOptionalChainingCall = (op == Icode_CALLSPECIAL_OPTIONAL); if (state.instructionCounting) { - cx.instructionCount += INVOCATION_COST; + cx.impl().instructionCount += INVOCATION_COST; } int callType = iCode[frame.pc] & 0xFF; boolean isNew = (iCode[frame.pc + 1] != 0); @@ -3229,7 +3229,7 @@ NewState execute(Context cx, CallFrame frame, InterpreterState state, int op) { int blen = 0; if (state.instructionCounting) { - cx.instructionCount += INVOCATION_COST; + cx.impl().instructionCount += INVOCATION_COST; } // stack change: lookup_result arg0 .. argN -> result // indexReg: number of arguments @@ -3483,7 +3483,7 @@ private static class DoNew extends InstructionClass { @Override NewState execute(Context cx, CallFrame frame, InterpreterState state, int op) { if (state.instructionCounting) { - cx.instructionCount += INVOCATION_COST; + cx.impl().instructionCount += INVOCATION_COST; } // stack change: function arg0 .. argN -> newResult // state.indexReg: number of arguments @@ -4605,7 +4605,7 @@ private static CallFrame initFrame( fnOrScript, parentFrame, parentFrame == null - ? (CallFrame) cx.lastInterpreterFrame + ? (CallFrame) cx.impl().lastInterpreterFrame : parentFrame.previousInterpreterFrame); frame.initializeArgs( cx, callerScope, args, argsDbl, boundArgs, argShift, argCount, homeObj); @@ -4713,10 +4713,10 @@ private static void setCallResult(CallFrame frame, Object callResult, double cal } public static NativeContinuation captureContinuation(Context cx) { - if (cx.lastInterpreterFrame == null || !(cx.lastInterpreterFrame instanceof CallFrame)) { + if (cx.impl().lastInterpreterFrame == null || !(cx.impl().lastInterpreterFrame instanceof CallFrame)) { throw new IllegalStateException("Interpreter frames not found"); } - return captureContinuation(cx, (CallFrame) cx.lastInterpreterFrame, true); + return captureContinuation(cx, (CallFrame) cx.impl().lastInterpreterFrame, true); } private static NativeContinuation captureContinuation( @@ -4834,10 +4834,10 @@ private static Object[] getArgsArray( } private static void addInstructionCount(Context cx, CallFrame frame, int extra) { - cx.instructionCount += frame.pc - frame.pcPrevBranch + extra; - if (cx.instructionCount > cx.instructionThreshold) { - cx.observeInstructionCount(cx.instructionCount); - cx.instructionCount = 0; + cx.impl().instructionCount += frame.pc - frame.pcPrevBranch + extra; + if (cx.impl().instructionCount > cx.impl().instructionThreshold) { + cx.impl().observeInstructionCount(cx.impl().instructionCount); + cx.impl().instructionCount = 0; } } } diff --git a/rhino/src/main/java/org/mozilla/javascript/JavaMembers.java b/rhino/src/main/java/org/mozilla/javascript/JavaMembers.java index ffb1e8b4c9..d9fe50be57 100644 --- a/rhino/src/main/java/org/mozilla/javascript/JavaMembers.java +++ b/rhino/src/main/java/org/mozilla/javascript/JavaMembers.java @@ -45,7 +45,7 @@ class JavaMembers { JavaMembers(Scriptable scope, Class cl, boolean includeProtected) { try (Context cx = ContextFactory.getGlobal().enterContext()) { - ClassShutter shutter = cx.getClassShutter(); + ClassShutter shutter = cx.impl().getClassShutter(); if (shutter != null && !shutter.visibleToScripts(cl.getName())) { throw Context.reportRuntimeErrorById("msg.access.prohibited", cl.getName()); } diff --git a/rhino/src/main/java/org/mozilla/javascript/NativeArray.java b/rhino/src/main/java/org/mozilla/javascript/NativeArray.java index 22ca0935d1..0dd0e65e17 100644 --- a/rhino/src/main/java/org/mozilla/javascript/NativeArray.java +++ b/rhino/src/main/java/org/mozilla/javascript/NativeArray.java @@ -959,13 +959,13 @@ private static String toStringHelper( long i = 0; boolean toplevel, iterating; - if (cx.iterating == null) { + if (cx.impl().iterating == null) { toplevel = true; iterating = false; - cx.iterating = new HashSet(); + cx.impl().iterating = new HashSet(); } else { toplevel = false; - iterating = cx.iterating.contains(o); + iterating = cx.impl().iterating.contains(o); } // Make sure cx.iterating is set to null when done @@ -973,7 +973,7 @@ private static String toStringHelper( try { if (!iterating) { // stop recursion - cx.iterating.add(o); + cx.impl().iterating.add(o); // make toSource print null and undefined values in recent versions boolean skipUndefinedAndNull = @@ -1007,11 +1007,11 @@ private static String toStringHelper( // processing of thisObj done, remove it from the recursion detector // to allow thisObj to be again in the array later on - cx.iterating.remove(o); + cx.impl().iterating.remove(o); } } finally { if (toplevel) { - cx.iterating = null; + cx.impl().iterating = null; } } diff --git a/rhino/src/main/java/org/mozilla/javascript/NativeJavaPackage.java b/rhino/src/main/java/org/mozilla/javascript/NativeJavaPackage.java index 6921e18187..273c18ba34 100644 --- a/rhino/src/main/java/org/mozilla/javascript/NativeJavaPackage.java +++ b/rhino/src/main/java/org/mozilla/javascript/NativeJavaPackage.java @@ -105,7 +105,7 @@ synchronized Object getPkgProperty(String name, Scriptable start, boolean create String className = (packageName.length() == 0) ? name : packageName + '.' + name; Context cx = Context.getContext(); - ClassShutter shutter = cx.getClassShutter(); + ClassShutter shutter = cx.impl().getClassShutter(); Scriptable newValue = null; if (shutter == null || shutter.visibleToScripts(className)) { Class cl = null; diff --git a/rhino/src/main/java/org/mozilla/javascript/NativeNumber.java b/rhino/src/main/java/org/mozilla/javascript/NativeNumber.java index ef1c0b0ae8..63cf8108c9 100644 --- a/rhino/src/main/java/org/mozilla/javascript/NativeNumber.java +++ b/rhino/src/main/java/org/mozilla/javascript/NativeNumber.java @@ -147,7 +147,7 @@ private static Object js_constructorFunc( private static Object js_toFixed( Context cx, Scriptable scope, Scriptable thisObj, Object[] args) { - int precisionMin = cx.version < Context.VERSION_ES6 ? -20 : 0; + int precisionMin = cx.impl().version < Context.VERSION_ES6 ? -20 : 0; double value = toSelf(thisObj).doubleValue; return num_to(value, args, DToA.DTOSTR_FIXED, DToA.DTOSTR_FIXED, precisionMin, 0); } diff --git a/rhino/src/main/java/org/mozilla/javascript/NativeObject.java b/rhino/src/main/java/org/mozilla/javascript/NativeObject.java index c285d05135..e00d28a2dd 100644 --- a/rhino/src/main/java/org/mozilla/javascript/NativeObject.java +++ b/rhino/src/main/java/org/mozilla/javascript/NativeObject.java @@ -53,7 +53,7 @@ public Scriptable construct(Context cx, Scriptable scope, Object[] args) { proto.defineProperty("constructor", ctor, DONTENUM); defOnCtor(ctor, s, "getPrototypeOf", 1, NativeObject::js_getPrototypeOf); - if (Context.getCurrentContext().version >= Context.VERSION_ES6) { + if (ContextImpl.getCurrentContext().impl().version >= Context.VERSION_ES6) { defOnCtor(ctor, s, "setPrototypeOf", 2, NativeObject::js_setPrototypeOf); defOnCtor(ctor, s, "entries", 1, NativeObject::js_entries); defOnCtor(ctor, s, "fromEntries", 1, NativeObject::js_fromEntries); diff --git a/rhino/src/main/java/org/mozilla/javascript/NativePromise.java b/rhino/src/main/java/org/mozilla/javascript/NativePromise.java index c55dd97c0d..c93eebc222 100644 --- a/rhino/src/main/java/org/mozilla/javascript/NativePromise.java +++ b/rhino/src/main/java/org/mozilla/javascript/NativePromise.java @@ -100,7 +100,7 @@ private static Scriptable constructor(Context cx, Scriptable scope, Object[] arg Scriptable thisObj = Undefined.SCRIPTABLE_UNDEFINED; if (!cx.isStrictMode()) { - Scriptable tcs = cx.topCallScope; + Scriptable tcs = cx.impl().topCallScope; if (tcs != null) { thisObj = tcs; } diff --git a/rhino/src/main/java/org/mozilla/javascript/NativeScript.java b/rhino/src/main/java/org/mozilla/javascript/NativeScript.java index 1c01634d5a..a0e4f5d7e8 100644 --- a/rhino/src/main/java/org/mozilla/javascript/NativeScript.java +++ b/rhino/src/main/java/org/mozilla/javascript/NativeScript.java @@ -155,14 +155,14 @@ private static NativeScript realThis(Scriptable thisObj, String name) { private static Script compile(Context cx, String source) { int[] linep = {0}; - String filename = Context.getSourcePositionFromStack(linep); + String filename = ContextImpl.getSourcePositionFromStack(linep); if (filename == null) { filename = "