# HG changeset patch
# User sundar
# Date 1439473047 -19800
# Node ID 705d4af0d4d75349bd1ba1f641f516d400e26493
# Parent  c25e882cee9622ec75c4e9d60633539a2f0a8809
8133347: Add makefiles support and basic session, persistence history navigation with jline
Reviewed-by: erikj, jlahoda, jlaskey

diff -r c25e882cee96 -r 705d4af0d4d7 nashorn/make/BuildNashorn.gmk
--- a/nashorn/make/BuildNashorn.gmk	Wed Jul 05 20:45:01 2017 +0200
+++ b/nashorn/make/BuildNashorn.gmk	Thu Aug 13 19:07:27 2015 +0530
@@ -53,7 +53,10 @@
     SERVER_JVM := $(SJAVAC_SERVER_JAVA)))
 
 # Build nashorn into intermediate directory
-$(eval $(call SetupJavaCompilation,BUILD_NASHORN, \
+# Name the compilation setup the same as the module, as is done in the global
+# CompileJavaModules.gmk, to make dependency checking with other modules work
+# seamlessly.
+$(eval $(call SetupJavaCompilation,jdk.scripting.nashorn, \
     SETUP := GENERATE_NEWBYTECODE_DEBUG, \
     SRC := $(NASHORN_TOPDIR)/src/jdk.scripting.nashorn/share/classes, \
     EXCLUDE_FILES := META-INF/MANIFEST.MF, \
@@ -71,7 +74,7 @@
     ADD_JAVAC_FLAGS := -Xbootclasspath/p:"$(SUPPORT_OUTPUTDIR)/special_classes/jdk.scripting.nashorn/classes"))
 
 # Nasgen needs nashorn classes
-$(BUILD_NASGEN): $(BUILD_NASHORN)
+$(BUILD_NASGEN): $(jdk.scripting.nashorn)
 
 NASHORN_CLASSES_DIR := $(JDK_OUTPUTDIR)/modules/jdk.scripting.nashorn
 NASGEN_RUN_FILE := $(NASHORN_CLASSES_DIR)/_the.nasgen.run
diff -r c25e882cee96 -r 705d4af0d4d7 nashorn/make/build.xml
--- a/nashorn/make/build.xml	Wed Jul 05 20:45:01 2017 +0200
+++ b/nashorn/make/build.xml	Thu Aug 13 19:07:27 2015 +0530
@@ -147,16 +147,16 @@
        <fileset dir="${meta.inf.dir}/services/"/>
     </copy>
      <copy todir="${build.classes.dir}/jdk/nashorn/api/scripting/resources">
-       <fileset dir="${src.dir}/jdk/nashorn/api/scripting/resources/"/>
+       <fileset dir="${nashorn.module.src.dir}/jdk/nashorn/api/scripting/resources/"/>
     </copy>
     <copy todir="${build.classes.dir}/jdk/nashorn/internal/runtime/resources">
-       <fileset dir="${src.dir}/jdk/nashorn/internal/runtime/resources/"/>
+       <fileset dir="${nashorn.module.src.dir}/jdk/nashorn/internal/runtime/resources/"/>
     </copy>
     <copy todir="${build.classes.dir}/jdk/nashorn/tools/resources">
-       <fileset dir="${src.dir}/jdk/nashorn/tools/resources/"/>
+       <fileset dir="${nashorn.module.src.dir}/jdk/nashorn/tools/resources/"/>
     </copy>
-    <copy file="${src.dir}/jdk/internal/dynalink/support/messages.properties" todir="${build.classes.dir}/jdk/internal/dynalink/support"/>
-    <copy file="${src.dir}/jdk/nashorn/internal/codegen/anchor.properties" todir="${build.classes.dir}/jdk/nashorn/internal/codegen"/>
+    <copy file="${nashorn.module.src.dir}/jdk/internal/dynalink/support/messages.properties" todir="${build.classes.dir}/jdk/internal/dynalink/support"/>
+    <copy file="${nashorn.module.src.dir}/jdk/nashorn/internal/codegen/anchor.properties" todir="${build.classes.dir}/jdk/nashorn/internal/codegen"/>
 
     <echo message="full=${nashorn.fullversion}" file="${build.classes.dir}/jdk/nashorn/internal/runtime/resources/version.properties"/>
     <echo file="${build.classes.dir}/jdk/nashorn/internal/runtime/resources/version.properties" append="true">${line.separator}</echo>
@@ -165,7 +165,14 @@
 
   <target name="jar" depends="compile, run-nasgen, generate-cc-template" description="Creates nashorn.jar" unless="compile.suppress.jar">
     <jar jarfile="${dist.jar}" manifest="${meta.inf.dir}/MANIFEST.MF" index="true" filesetmanifest="merge">
-      <fileset dir="${build.classes.dir}"/>
+      <!-- 
+        Exclude jjs classes from nashorn.jar to avoid desktop dependency.
+        We have a test to make sure basic nashorn code has only "compact1"
+        dependency - except for jjs shell code which has desktop dependency.
+      -->
+      <fileset dir="${build.classes.dir}">
+          <exclude name="**/jdk/nashorn/tools/jjs/*"/>
+      </fileset>
       <manifest>
         <attribute name="Archiver-Version" value="n/a"/>
         <attribute name="Build-Jdk" value="${java.runtime.version}"/>
@@ -230,13 +237,14 @@
 
   <!-- generate javadoc for Nashorn classes -->
   <target name="javadocnh" depends="jar">
-    <javadoc destdir="${dist.javadoc.dir}" use="yes" overview="${src.dir}/overview.html"
+    <javadoc destdir="${dist.javadoc.dir}" use="yes" overview="${nashorn.module.src.dir}/overview.html"
         extdirs="${nashorn.ext.path}" windowtitle="${nashorn.product.name} ${nashorn.version}"
         additionalparam="-quiet" failonerror="true" useexternalfile="true">
       <classpath>
         <pathelement location="${build.classes.dir}"/>
       </classpath>
-      <fileset dir="${src.dir}" includes="**/*.java"/>
+      <fileset dir="${nashorn.module.src.dir}" includes="**/*.java"/>
+      <fileset dir="${nashorn.shell.module.src.dir}" includes="**/*.java"/>
       <link href="http://docs.oracle.com/javase/8/docs/api/"/>
     </javadoc>
   </target>
diff -r c25e882cee96 -r 705d4af0d4d7 nashorn/make/project.properties
--- a/nashorn/make/project.properties	Wed Jul 05 20:45:01 2017 +0200
+++ b/nashorn/make/project.properties	Thu Aug 13 19:07:27 2015 +0530
@@ -26,6 +26,9 @@
 # location of JDK embedded ASM sources
 jdk.asm.src.dir=../jdk/src/java.base/share/classes/jdk/internal/org/objectweb/asm
 
+# location of JDK embedded jline sources
+jdk.jline.src.dir=../jdk/src/jdk.internal.le/share/classes
+
 # source and target levels
 build.compiler=modern
 javac.source=1.8
@@ -112,7 +115,7 @@
     ${build.test.classes.dir}${path.separator}\
     ${file.reference.testng.jar}
 
-meta.inf.dir=${src.dir}/META-INF
+meta.inf.dir=${nashorn.module.src.dir}/META-INF
 
 run.classpath=\
     ${build.classes.dir}
@@ -266,7 +269,13 @@
     ${nashorn.internal.tests.jar}${path.separator}\
     ${nashorn.api.tests.jar}
 
-src.dir=src/jdk.scripting.nashorn/share/classes
+nashorn.module.src.dir=src/jdk.scripting.nashorn/share/classes
+nashorn.shell.module.src.dir=src/jdk.scripting.nashorn.shell/share/classes
+
+src.dir=${nashorn.module.src.dir}${path.separator}\
+        ${nashorn.shell.module.src.dir}${path.separator}\
+        ${jdk.jline.src.dir}
+
 test.src.dir=test/src
 
 # -Xmx is used for all tests, -Xms only for octane benchmark
diff -r c25e882cee96 -r 705d4af0d4d7 nashorn/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Console.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Console.java	Thu Aug 13 19:07:27 2015 +0530
@@ -0,0 +1,103 @@
+/*
+ * 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
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.nashorn.tools.jjs;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.prefs.BackingStoreException;
+import java.util.prefs.Preferences;
+import jdk.internal.jline.console.ConsoleReader;
+import jdk.internal.jline.console.history.History.Entry;
+import jdk.internal.jline.console.history.MemoryHistory;
+
+class Console implements AutoCloseable {
+    private final ConsoleReader in;
+    private final PersistentHistory history;
+
+    Console(InputStream cmdin, PrintStream cmdout, Preferences prefs) throws IOException {
+        in = new ConsoleReader(cmdin, cmdout);
+        in.setExpandEvents(false);
+        in.setHandleUserInterrupt(true);
+        in.setHistory(history = new PersistentHistory(prefs));
+        Runtime.getRuntime().addShutdownHook(new Thread(()->close()));
+    }
+
+    String readLine(String prompt) throws IOException {
+        return in.readLine(prompt);
+    }
+
+
+    @Override
+    public void close() {
+        history.save();
+    }
+
+    public static class PersistentHistory extends MemoryHistory {
+
+        private final Preferences prefs;
+
+        protected PersistentHistory(Preferences prefs) {
+            this.prefs = prefs;
+            load();
+        }
+
+        private static final String HISTORY_LINE_PREFIX = "HISTORY_LINE_";
+
+        public final void load() {
+            try {
+                List<String> keys = new ArrayList<>(Arrays.asList(prefs.keys()));
+                Collections.sort(keys);
+                for (String key : keys) {
+                    if (!key.startsWith(HISTORY_LINE_PREFIX))
+                        continue;
+                    CharSequence line = prefs.get(key, "");
+                    add(line);
+                }
+            } catch (BackingStoreException ex) {
+                throw new IllegalStateException(ex);
+            }
+        }
+
+        public void save() {
+            Iterator<Entry> entries = iterator();
+            if (entries.hasNext()) {
+                int len = (int) Math.ceil(Math.log10(size()+1));
+                String format = HISTORY_LINE_PREFIX + "%0" + len + "d";
+                while (entries.hasNext()) {
+                    Entry entry = entries.next();
+                    prefs.put(String.format(format, entry.index()), entry.value().toString());
+                }
+            }
+        }
+
+    }
+}
diff -r c25e882cee96 -r 705d4af0d4d7 nashorn/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Main.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Main.java	Thu Aug 13 19:07:27 2015 +0530
@@ -0,0 +1,150 @@
+/*
+ * 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
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.nashorn.tools.jjs;
+
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.util.prefs.Preferences;
+import jdk.nashorn.internal.objects.Global;
+import jdk.nashorn.internal.runtime.Context;
+import jdk.nashorn.internal.runtime.ErrorManager;
+import jdk.nashorn.internal.runtime.JSType;
+import jdk.nashorn.internal.runtime.ScriptEnvironment;
+import jdk.nashorn.internal.runtime.ScriptRuntime;
+import jdk.nashorn.tools.Shell;
+import jdk.internal.jline.console.UserInterruptException;
+
+/**
+ * Interactive command line Shell for Nashorn.
+ */
+public final class Main extends Shell {
+    private Main() {}
+
+    static final Preferences PREFS = Preferences.userRoot().node("tool/jjs");
+
+    /**
+     * Main entry point with the default input, output and error streams.
+     *
+     * @param args The command line arguments
+     */
+    public static void main(final String[] args) {
+        try {
+            final int exitCode = main(System.in, System.out, System.err, args);
+            if (exitCode != SUCCESS) {
+                System.exit(exitCode);
+            }
+        } catch (final IOException e) {
+            System.err.println(e); //bootstrapping, Context.err may not exist
+            System.exit(IO_ERROR);
+        }
+    }
+
+    /**
+     * Starting point for executing a {@code Shell}. Starts a shell with the
+     * given arguments and streams and lets it run until exit.
+     *
+     * @param in input stream for Shell
+     * @param out output stream for Shell
+     * @param err error stream for Shell
+     * @param args arguments to Shell
+     *
+     * @return exit code
+     *
+     * @throws IOException if there's a problem setting up the streams
+     */
+    public static int main(final InputStream in, final OutputStream out, final OutputStream err, final String[] args) throws IOException {
+        return new Main().run(in, out, err, args);
+    }
+
+    /**
+     * read-eval-print loop for Nashorn shell.
+     *
+     * @param context the nashorn context
+     * @param global  global scope object to use
+     * @return return code
+     */
+    protected int readEvalPrint(final Context context, final Global global) {
+        final ScriptEnvironment env = context.getEnv();
+        final String prompt = bundle.getString("shell.prompt");
+        final PrintWriter err = context.getErr();
+        final Global oldGlobal = Context.getGlobal();
+        final boolean globalChanged = (oldGlobal != global);
+
+        try (final Console in = new Console(System.in, System.out, PREFS)) {
+            if (globalChanged) {
+                Context.setGlobal(global);
+            }
+
+            global.addShellBuiltins();
+
+            while (true) {
+                String source = "";
+                try {
+                    source = in.readLine(prompt);
+                } catch (final IOException ioe) {
+                    err.println(ioe.toString());
+                    if (env._dump_on_error) {
+                        ioe.printStackTrace(err);
+                    }
+                    return IO_ERROR;
+                } catch (final UserInterruptException ex) {
+                    break;
+                }
+
+                if (source.isEmpty()) {
+                    continue;
+                }
+
+                try {
+                    final Object res = context.eval(global, source, global, "<shell>");
+                    if (res != ScriptRuntime.UNDEFINED) {
+                        err.println(JSType.toString(res));
+                    }
+                } catch (final Exception e) {
+                    err.println(e);
+                    if (env._dump_on_error) {
+                        e.printStackTrace(err);
+                    }
+                }
+            }
+        } catch (final Exception e) {
+            err.println(e);
+            if (env._dump_on_error) {
+                e.printStackTrace(err);
+            }
+        } finally {
+            if (globalChanged) {
+                Context.setGlobal(oldGlobal);
+            }
+        }
+
+        return SUCCESS;
+    }
+}
diff -r c25e882cee96 -r 705d4af0d4d7 nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/tools/Shell.java
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/tools/Shell.java	Wed Jul 05 20:45:01 2017 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/tools/Shell.java	Thu Aug 13 19:07:27 2015 +0530
@@ -68,7 +68,7 @@
     /**
      * Shell message bundle.
      */
-    private static final ResourceBundle bundle = ResourceBundle.getBundle(MESSAGE_RESOURCE, Locale.getDefault());
+    protected static final ResourceBundle bundle = ResourceBundle.getBundle(MESSAGE_RESOURCE, Locale.getDefault());
 
     /**
      * Exit code for command line tool - successful
@@ -403,7 +403,7 @@
      * @param global  global scope object to use
      * @return return code
      */
-    private static int readEvalPrint(final Context context, final Global global) {
+    protected int readEvalPrint(final Context context, final Global global) {
         final String prompt = bundle.getString("shell.prompt");
         final BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
         final PrintWriter err = context.getErr();