8153243: make docs should generate JShell API docs
Summary: Tweaking JShell javadoc so that it can be built without warnings/errors.
Reviewed-by: rfield, erikj
/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package jdk.jshell;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.text.MessageFormat;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.Objects;
import java.util.ResourceBundle;
import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Supplier;
import jdk.internal.jshell.debug.InternalDebugControl;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toList;
import static jdk.jshell.Util.expunge;
import jdk.jshell.Snippet.Status;
/**
* The JShell evaluation state engine. This is the central class in the JShell
* API. A <code>JShell</code> instance holds the evolving compilation and
* execution state. The state is changed with the instance methods
* {@link jdk.jshell.JShell#eval(java.lang.String) eval(String)},
* {@link jdk.jshell.JShell#drop(jdk.jshell.PersistentSnippet) drop(PersistentSnippet)} and
* {@link jdk.jshell.JShell#addToClasspath(java.lang.String) addToClasspath(String)}.
* The majority of methods query the state.
* A <code>JShell</code> instance also allows registering for events with
* {@link jdk.jshell.JShell#onSnippetEvent(java.util.function.Consumer) onSnippetEvent(Consumer)}
* and {@link jdk.jshell.JShell#onShutdown(java.util.function.Consumer) onShutdown(Consumer)}, which
* are unregistered with
* {@link jdk.jshell.JShell#unsubscribe(jdk.jshell.JShell.Subscription) unsubscribe(Subscription)}.
* Access to the source analysis utilities is via
* {@link jdk.jshell.JShell#sourceCodeAnalysis()}.
* When complete the instance should be closed to free resources --
* {@link jdk.jshell.JShell#close()}.
* <p>
* An instance of <code>JShell</code> is created with
* <code>JShell.create()</code>.
* <p>
* This class is not thread safe, except as noted, all access should be through
* a single thread.
* @see jdk.jshell
* @author Robert Field
*/
public class JShell implements AutoCloseable {
final SnippetMaps maps;
final KeyMap keyMap;
final TaskFactory taskFactory;
final InputStream in;
final PrintStream out;
final PrintStream err;
final Supplier<String> tempVariableNameGenerator;
final BiFunction<Snippet, Integer, String> idGenerator;
private int nextKeyIndex = 1;
final Eval eval;
final ClassTracker classTracker;
private final Map<Subscription, Consumer<JShell>> shutdownListeners = new HashMap<>();
private final Map<Subscription, Consumer<SnippetEvent>> keyStatusListeners = new HashMap<>();
private boolean closed = false;
private ExecutionControl executionControl = null;
private SourceCodeAnalysisImpl sourceCodeAnalysis = null;
private static final String L10N_RB_NAME = "jdk.jshell.resources.l10n";
private static ResourceBundle outputRB = null;
JShell(Builder b) {
this.in = b.in;
this.out = b.out;
this.err = b.err;
this.tempVariableNameGenerator = b.tempVariableNameGenerator;
this.idGenerator = b.idGenerator;
this.maps = new SnippetMaps(this);
maps.setPackageName("REPL");
this.keyMap = new KeyMap(this);
this.taskFactory = new TaskFactory(this);
this.eval = new Eval(this);
this.classTracker = new ClassTracker(this);
}
/**
* Builder for <code>JShell</code> instances.
* Create custom instances of <code>JShell</code> by using the setter
* methods on this class. After zero or more of these, use the
* {@link #build()} method to create a <code>JShell</code> instance.
* These can all be chained. For example, setting the remote output and
* error streams:
* <pre>
* <code>
* JShell myShell =
* JShell.builder()
* .out(myOutStream)
* .err(myErrStream)
* .build(); </code> </pre>
* If no special set-up is needed, just use
* <code>JShell.builder().build()</code> or the short-cut equivalent
* <code>JShell.create()</code>.
*/
public static class Builder {
InputStream in = new ByteArrayInputStream(new byte[0]);
PrintStream out = System.out;
PrintStream err = System.err;
Supplier<String> tempVariableNameGenerator = null;
BiFunction<Snippet, Integer, String> idGenerator = null;
Builder() { }
/**
* Input for the running evaluation (it's <code>System.in</code>). Note:
* applications that use <code>System.in</code> for snippet or other
* user input cannot use <code>System.in</code> as the input stream for
* the remote process.
* <p>
* The default, if this is not set, is to provide an empty input stream
* -- <code>new ByteArrayInputStream(new byte[0])</code>.
*
* @param in the <code>InputStream</code> to be channelled to
* <code>System.in</code> in the remote execution process.
* @return the <code>Builder</code> instance (for use in chained
* initialization).
*/
public Builder in(InputStream in) {
this.in = in;
return this;
}
/**
* Output for the running evaluation (it's <code>System.out</code>).
* The controlling process and
* the remote process can share <code>System.out</code>.
* <p>
* The default, if this is not set, is <code>System.out</code>.
*
* @param out the <code>PrintStream</code> to be channelled to
* <code>System.out</code> in the remote execution process.
* @return the <code>Builder</code> instance (for use in chained
* initialization).
*/
public Builder out(PrintStream out) {
this.out = out;
return this;
}
/**
* Error output for the running evaluation (it's
* <code>System.err</code>). The controlling process and the remote
* process can share <code>System.err</code>.
* <p>
* The default, if this is not set, is <code>System.err</code>.
*
* @param err the <code>PrintStream</code> to be channelled to
* <code>System.err</code> in the remote execution process.
* @return the <code>Builder</code> instance (for use in chained
* initialization).
*/
public Builder err(PrintStream err) {
this.err = err;
return this;
}
/**
* Set a generator of temp variable names for
* {@link jdk.jshell.VarSnippet} of
* {@link jdk.jshell.Snippet.SubKind#TEMP_VAR_EXPRESSION_SUBKIND}.
* <p>
* Do not use this method unless you have explicit need for it.
* <p>
* The generator will be used for newly created VarSnippet
* instances. The name of a variable is queried with
* {@link jdk.jshell.VarSnippet#name()}.
* <p>
* The callback is sent during the processing of the snippet, the
* JShell state is not stable. No calls whatsoever on the
* <code>JShell</code> instance may be made from the callback.
* <p>
* The generated name must be unique within active snippets.
* <p>
* The default behavior (if this is not set or <code>generator</code>
* is null) is to generate the name as a sequential number with a
* prefixing dollar sign ("$").
*
* @param generator the <code>Supplier</code> to generate the temporary
* variable name string or <code>null</code>.
* @return the <code>Builder</code> instance (for use in chained
* initialization).
*/
public Builder tempVariableNameGenerator(Supplier<String> generator) {
this.tempVariableNameGenerator = generator;
return this;
}
/**
* Set the generator of identifying names for Snippets.
* <p>
* Do not use this method unless you have explicit need for it.
* <p>
* The generator will be used for newly created Snippet instances. The
* identifying name (id) is accessed with
* {@link jdk.jshell.Snippet#id()} and can be seen in the
* <code>StackTraceElement.getFileName()</code> for a
* {@link jdk.jshell.EvalException} and
* {@link jdk.jshell.UnresolvedReferenceException}.
* <p>
* The inputs to the generator are the {@link jdk.jshell.Snippet} and an
* integer. The integer will be the same for two Snippets which would
* overwrite one-another, but otherwise is unique.
* <p>
* The callback is sent during the processing of the snippet and the
* Snippet and the state as a whole are not stable. No calls to change
* system state (including Snippet state) should be made. Queries of
* Snippet may be made except to {@link jdk.jshell.Snippet#id()}. No
* calls on the <code>JShell</code> instance may be made from the
* callback, except to
* {@link #status(jdk.jshell.Snippet) status(Snippet)}.
* <p>
* The default behavior (if this is not set or <code>generator</code>
* is null) is to generate the id as the integer converted to a string.
*
* @param generator the <code>BiFunction</code> to generate the id
* string or <code>null</code>.
* @return the <code>Builder</code> instance (for use in chained
* initialization).
*/
public Builder idGenerator(BiFunction<Snippet, Integer, String> generator) {
this.idGenerator = generator;
return this;
}
/**
* Build a JShell state engine. This is the entry-point to all JShell
* functionality. This creates a remote process for execution. It is
* thus important to close the returned instance.
*
* @return the state engine.
*/
public JShell build() {
return new JShell(this);
}
}
// --- public API ---
/**
* Create a new JShell state engine.
* That is, create an instance of <code>JShell</code>.
* <p>
* Equivalent to {@link JShell#builder() JShell.builder()}{@link JShell.Builder#build() .build()}.
* @return an instance of <code>JShell</code>.
*/
public static JShell create() {
return builder().build();
}
/**
* Factory method for <code>JShell.Builder</code> which, in-turn, is used
* for creating instances of <code>JShell</code>.
* Create a default instance of <code>JShell</code> with
* <code>JShell.builder().build()</code>. For more construction options
* see {@link jdk.jshell.JShell.Builder}.
* @return an instance of <code>Builder</code>.
* @see jdk.jshell.JShell.Builder
*/
public static Builder builder() {
return new Builder();
}
/**
* Access to source code analysis functionality.
* An instance of <code>JShell</code> will always return the same
* <code>SourceCodeAnalysis</code> instance from
* <code>sourceCodeAnalysis()</code>.
* @return an instance of {@link SourceCodeAnalysis SourceCodeAnalysis}
* which can be used for source analysis such as completion detection and
* completion suggestions.
*/
public SourceCodeAnalysis sourceCodeAnalysis() {
if (sourceCodeAnalysis == null) {
sourceCodeAnalysis = new SourceCodeAnalysisImpl(this);
}
return sourceCodeAnalysis;
}
/**
* Evaluate the input String, including definition and/or execution, if
* applicable. The input is checked for errors, unless the errors can be
* deferred (as is the case with some unresolvedDependencies references),
* errors will abort evaluation. The input should be
* exactly one complete snippet of source code, that is, one expression,
* statement, variable declaration, method declaration, class declaration,
* or import.
* To break arbitrary input into individual complete snippets, use
* {@link SourceCodeAnalysis#analyzeCompletion(String)}.
* <p>
* For imports, the import is added. Classes, interfaces. methods,
* and variables are defined. The initializer of variables, statements,
* and expressions are executed.
* The modifiers public, protected, private, static, and final are not
* allowed on op-level declarations and are ignored with a warning.
* Synchronized, native, abstract, and default top-level methods are not
* allowed and are errors.
* If a previous definition of a declaration is overwritten then there will
* be an event showing its status changed to OVERWRITTEN, this will not
* occur for dropped, rejected, or already overwritten declarations.
* <p>
* The execution environment is out of process. If the evaluated code
* causes the execution environment to terminate, this <code>JShell</code>
* instance will be closed but the calling process and VM remain valid.
* @param input The input String to evaluate
* @return the list of events directly or indirectly caused by this evaluation.
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
* @see SourceCodeAnalysis#analyzeCompletion(String)
* @see JShell#onShutdown(java.util.function.Consumer)
*/
public List<SnippetEvent> eval(String input) throws IllegalStateException {
SourceCodeAnalysisImpl a = sourceCodeAnalysis;
if (a != null) {
a.suspendIndexing();
}
try {
checkIfAlive();
List<SnippetEvent> events = eval.eval(input);
events.forEach(this::notifyKeyStatusEvent);
return Collections.unmodifiableList(events);
} finally {
if (a != null) {
a.resumeIndexing();
}
}
}
/**
* Remove a declaration from the state.
* @param snippet The snippet to remove
* @return The list of events from updating declarations dependent on the
* dropped snippet.
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
* @throws IllegalArgumentException if the snippet is not associated with
* this <code>JShell</code> instance.
*/
public List<SnippetEvent> drop(PersistentSnippet snippet) throws IllegalStateException {
checkIfAlive();
checkValidSnippet(snippet);
List<SnippetEvent> events = eval.drop(snippet);
events.forEach(this::notifyKeyStatusEvent);
return Collections.unmodifiableList(events);
}
/**
* The specified path is added to the end of the classpath used in eval().
* Note that the unnamed package is not accessible from the package in which
* {@link JShell#eval(String)} code is placed.
* @param path the path to add to the classpath.
*/
public void addToClasspath(String path) {
taskFactory.addToClasspath(path); // Compiler
executionControl().commandAddToClasspath(path); // Runtime
if (sourceCodeAnalysis != null) {
sourceCodeAnalysis.classpathChanged();
}
}
/**
* Attempt to stop currently running evaluation. When called while
* the {@link #eval(java.lang.String) } method is running and the
* user's code being executed, an attempt will be made to stop user's code.
* Note that typically this method needs to be called from a different thread
* than the one running the {@code eval} method.
* <p>
* If the {@link #eval(java.lang.String) } method is not running, does nothing.
* <p>
* The attempt to stop the user's code may fail in some case, which may include
* when the execution is blocked on an I/O operation, or when the user's code is
* catching the {@link ThreadDeath} exception.
*/
public void stop() {
if (executionControl != null)
executionControl.commandStop();
}
/**
* Close this state engine. Frees resources. Should be called when this
* state engine is no longer needed.
*/
@Override
public void close() {
if (!closed) {
closeDown();
executionControl().commandExit();
}
}
/**
* Return all snippets.
* @return the snippets for all current snippets in id order.
* @throws IllegalStateException if this JShell instance is closed.
*/
public List<Snippet> snippets() throws IllegalStateException {
checkIfAlive();
return Collections.unmodifiableList(maps.snippetList());
}
/**
* Returns the active variable snippets.
* This convenience method is equivalent to <code>snippets()</code> filtered for
* {@link jdk.jshell.Snippet.Status#isActive status(snippet).isActive}
* <code>&& snippet.kind() == Kind.VARIABLE</code>
* and cast to <code>VarSnippet</code>.
* @return the active declared variables.
* @throws IllegalStateException if this JShell instance is closed.
*/
public List<VarSnippet> variables() throws IllegalStateException {
return snippets().stream()
.filter(sn -> status(sn).isActive && sn.kind() == Snippet.Kind.VAR)
.map(sn -> (VarSnippet) sn)
.collect(collectingAndThen(toList(), Collections::unmodifiableList));
}
/**
* Returns the active method snippets.
* This convenience method is equivalent to <code>snippets()</code> filtered for
* {@link jdk.jshell.Snippet.Status#isActive status(snippet).isActive}
* <code>&& snippet.kind() == Kind.METHOD</code>
* and cast to MethodSnippet.
* @return the active declared methods.
* @throws IllegalStateException if this JShell instance is closed.
*/
public List<MethodSnippet> methods() throws IllegalStateException {
return snippets().stream()
.filter(sn -> status(sn).isActive && sn.kind() == Snippet.Kind.METHOD)
.map(sn -> (MethodSnippet)sn)
.collect(collectingAndThen(toList(), Collections::unmodifiableList));
}
/**
* Returns the active type declaration (class, interface, annotation type, and enum) snippets.
* This convenience method is equivalent to <code>snippets()</code> filtered for
* {@link jdk.jshell.Snippet.Status#isActive status(snippet).isActive}
* <code>&& snippet.kind() == Kind.TYPE_DECL</code>
* and cast to TypeDeclSnippet.
* @return the active declared type declarations.
* @throws IllegalStateException if this JShell instance is closed.
*/
public List<TypeDeclSnippet> types() throws IllegalStateException {
return snippets().stream()
.filter(sn -> status(sn).isActive && sn.kind() == Snippet.Kind.TYPE_DECL)
.map(sn -> (TypeDeclSnippet) sn)
.collect(collectingAndThen(toList(), Collections::unmodifiableList));
}
/**
* Returns the active import snippets.
* This convenience method is equivalent to <code>snippets()</code> filtered for
* {@link jdk.jshell.Snippet.Status#isActive status(snippet).isActive}
* <code>&& snippet.kind() == Kind.IMPORT</code>
* and cast to ImportSnippet.
* @return the active declared import declarations.
* @throws IllegalStateException if this JShell instance is closed.
*/
public List<ImportSnippet> imports() throws IllegalStateException {
return snippets().stream()
.filter(sn -> status(sn).isActive && sn.kind() == Snippet.Kind.IMPORT)
.map(sn -> (ImportSnippet) sn)
.collect(collectingAndThen(toList(), Collections::unmodifiableList));
}
/**
* Return the status of the snippet.
* This is updated either because of an explicit <code>eval()</code> call or
* an automatic update triggered by a dependency.
* @param snippet the <code>Snippet</code> to look up
* @return the status corresponding to this snippet
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
* @throws IllegalArgumentException if the snippet is not associated with
* this <code>JShell</code> instance.
*/
public Status status(Snippet snippet) {
return checkValidSnippet(snippet).status();
}
/**
* Return the diagnostics of the most recent evaluation of the snippet.
* The evaluation can either because of an explicit <code>eval()</code> call or
* an automatic update triggered by a dependency.
* @param snippet the <code>Snippet</code> to look up
* @return the diagnostics corresponding to this snippet. This does not
* include unresolvedDependencies references reported in <code>unresolvedDependencies()</code>.
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
* @throws IllegalArgumentException if the snippet is not associated with
* this <code>JShell</code> instance.
*/
public List<Diag> diagnostics(Snippet snippet) {
return Collections.unmodifiableList(checkValidSnippet(snippet).diagnostics());
}
/**
* For {@link jdk.jshell.Snippet.Status#RECOVERABLE_DEFINED RECOVERABLE_DEFINED} or
* {@link jdk.jshell.Snippet.Status#RECOVERABLE_NOT_DEFINED RECOVERABLE_NOT_DEFINED}
* declarations, the names of current unresolved dependencies for
* the snippet.
* The returned value of this method, for a given method may change when an
* <code>eval()</code> or <code>drop()</code> of another snippet causes
* an update of a dependency.
* @param snippet the declaration <code>Snippet</code> to look up
* @return the list of symbol names that are currently unresolvedDependencies.
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
* @throws IllegalArgumentException if the snippet is not associated with
* this <code>JShell</code> instance.
*/
public List<String> unresolvedDependencies(DeclarationSnippet snippet) {
return Collections.unmodifiableList(checkValidSnippet(snippet).unresolved());
}
/**
* Get the current value of a variable.
* @param snippet the variable Snippet whose value is queried.
* @return the current value of the variable referenced by snippet.
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
* @throws IllegalArgumentException if the snippet is not associated with
* this <code>JShell</code> instance.
* @throws IllegalArgumentException if the variable's status is anything but
* {@link jdk.jshell.Snippet.Status#VALID}.
*/
public String varValue(VarSnippet snippet) throws IllegalStateException {
checkIfAlive();
checkValidSnippet(snippet);
if (snippet.status() != Status.VALID) {
throw new IllegalArgumentException(
messageFormat("jshell.exc.var.not.valid", snippet, snippet.status()));
}
String value = executionControl().commandVarValue(maps.classFullName(snippet), snippet.name());
return expunge(value);
}
/**
* Register a callback to be called when the Status of a snippet changes.
* Each call adds a new subscription.
* @param listener Action to perform when the Status changes.
* @return A token which can be used to {@linkplain JShell#unsubscribe unsubscribe} this subscription.
* @throws IllegalStateException if this <code>JShell</code> instance is closed.
*/
public Subscription onSnippetEvent(Consumer<SnippetEvent> listener)
throws IllegalStateException {
return onX(keyStatusListeners, listener);
}
/**
* Register a callback to be called when this JShell instance terminates.
* This occurs either because the client process has ended (e.g. called System.exit(0))
* or the connection has been shutdown, as by close().
* Each call adds a new subscription.
* @param listener Action to perform when the state terminates.
* @return A token which can be used to {@linkplain JShell#unsubscribe unsubscribe} this subscription.
* @throws IllegalStateException if this JShell instance is closed
*/
public Subscription onShutdown(Consumer<JShell> listener)
throws IllegalStateException {
return onX(shutdownListeners, listener);
}
/**
* Cancel a callback subscription.
* @param token The token corresponding to the subscription to be unsubscribed.
*/
public void unsubscribe(Subscription token) {
synchronized (this) {
token.remover.accept(token);
}
}
/**
* Subscription is a token for referring to subscriptions so they can
* be {@linkplain JShell#unsubscribe unsubscribed}.
*/
public class Subscription {
Consumer<Subscription> remover;
Subscription(Consumer<Subscription> remover) {
this.remover = remover;
}
}
// --- private / package-private implementation support ---
ExecutionControl executionControl() {
if (executionControl == null) {
this.executionControl = new ExecutionControl(new JDIEnv(this), maps, this);
try {
executionControl.launch();
} catch (IOException ex) {
throw new InternalError("Launching JDI execution engine threw: " + ex.getMessage(), ex);
}
}
return executionControl;
}
void debug(int flags, String format, Object... args) {
if (InternalDebugControl.debugEnabled(this, flags)) {
err.printf(format, args);
}
}
void debug(Exception ex, String where) {
if (InternalDebugControl.debugEnabled(this, 0xFFFFFFFF)) {
err.printf("Fatal error: %s: %s\n", where, ex.getMessage());
ex.printStackTrace(err);
}
}
/**
* Generate the next key index, indicating a unique snippet signature.
* @return the next key index
*/
int nextKeyIndex() {
return nextKeyIndex++;
}
private synchronized <T> Subscription onX(Map<Subscription, Consumer<T>> map, Consumer<T> listener)
throws IllegalStateException {
Objects.requireNonNull(listener);
checkIfAlive();
Subscription token = new Subscription(map::remove);
map.put(token, listener);
return token;
}
private synchronized void notifyKeyStatusEvent(SnippetEvent event) {
keyStatusListeners.values().forEach(l -> l.accept(event));
}
private synchronized void notifyShutdownEvent(JShell state) {
shutdownListeners.values().forEach(l -> l.accept(state));
}
void closeDown() {
if (!closed) {
// Send only once
closed = true;
notifyShutdownEvent(this);
}
}
/**
* Check if this JShell has been closed
* @throws IllegalStateException if it is closed
*/
private void checkIfAlive() throws IllegalStateException {
if (closed) {
throw new IllegalStateException(messageFormat("jshell.exc.closed", this));
}
}
/**
* Check a Snippet parameter coming from the API user
* @param sn the Snippet to check
* @throws NullPointerException if Snippet parameter is null
* @throws IllegalArgumentException if Snippet is not from this JShell
* @return the input Snippet (for chained calls)
*/
private Snippet checkValidSnippet(Snippet sn) {
if (sn == null) {
throw new NullPointerException(messageFormat("jshell.exc.null"));
} else {
if (sn.key().state() != this) {
throw new IllegalArgumentException(messageFormat("jshell.exc.alien"));
}
return sn;
}
}
/**
* Format using resource bundle look-up using MessageFormat
*
* @param key the resource key
* @param args
*/
String messageFormat(String key, Object... args) {
if (outputRB == null) {
try {
outputRB = ResourceBundle.getBundle(L10N_RB_NAME);
} catch (MissingResourceException mre) {
throw new InternalError("Cannot find ResourceBundle: " + L10N_RB_NAME);
}
}
String s;
try {
s = outputRB.getString(key);
} catch (MissingResourceException mre) {
throw new InternalError("Missing resource: " + key + " in " + L10N_RB_NAME);
}
return MessageFormat.format(s, args);
}
}