8042600: Add more samples in nashorn/samples directory
Reviewed-by: jlaskey, hannesw
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/BufferArray.java Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+import jdk.nashorn.api.scripting.AbstractJSObject;
+import java.nio.DoubleBuffer;
+
+/**
+ * Simple class demonstrating pluggable script object
+ * implementation. By implementing jdk.nashorn.api.scripting.JSObject
+ * (or extending AbstractJSObject which implements it), you
+ * can supply a friendly script object. Nashorn will call
+ * 'magic' methods on such a class on 'obj.foo, obj.foo = 33,
+ * obj.bar()' etc. from script.
+ *
+ * In this example, Java nio DoubleBuffer object is wrapped
+ * as a friendly script object that provides indexed acces
+ * to buffer content and also support array-like "length"
+ * readonly property to retrieve buffer's capacity. This class
+ * also demonstrates a function valued property called "buf".
+ * On 'buf' method, we return the underlying nio buffer object
+ * that is being wrapped.
+ */
+public class BufferArray extends AbstractJSObject {
+ // underlying nio buffer
+ private final DoubleBuffer buf;
+
+ public BufferArray(int size) {
+ buf = DoubleBuffer.allocate(size);
+ }
+
+ public BufferArray(DoubleBuffer buf) {
+ this.buf = buf;
+ }
+
+ // called to check if indexed property exists
+ @Override
+ public boolean hasSlot(int index) {
+ return index > 0 && index < buf.capacity();
+ }
+
+ // get the value from that index
+ @Override
+ public Object getSlot(int index) {
+ return buf.get(index);
+ }
+
+ // set the value at that index
+ @Override
+ public void setSlot(int index, Object value) {
+ buf.put(index, ((Number)value).doubleValue());
+ }
+
+ // do you have a property of that given name?
+ @Override
+ public boolean hasMember(String name) {
+ return "length".equals(name) || "buf".equals(name);
+ }
+
+ // get the value of that named property
+ @Override
+ public Object getMember(String name) {
+ switch (name) {
+ case "length":
+ return buf.capacity();
+ case "buf":
+ // return a 'function' value for this property
+ return new AbstractJSObject() {
+ @Override
+ public Object call(Object thiz, Object... args) {
+ return BufferArray.this.buf;
+ }
+
+ // yes, I'm a function !
+ @Override
+ public boolean isFunction() {
+ return true;
+ }
+ };
+ }
+ return null;
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/CastExample.java Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple java example with type casts.
+// see javacastcounter.js.
+
+class CastExample {
+ public final static int I = (int)23.33;
+ public final String str = (String)"hello";
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/README Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,1 @@
+Simple Nashorn examples that can be run with "jjs" tool.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/array_mapreduce.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Usage: jjs array_mapreduce.js
+
+// Many Array.prototype functions such as map,
+// filter, reduce, reduceRight, every, some are generic.
+// These functions accept ECMAScript array as well as
+// many array-like objects including java arrays.
+// So, you can do map/filter/reduce with Java streams or
+// you can also use Array.prototype functions as below.
+// See also http://en.wikipedia.org/wiki/MapReduce
+
+var DoubleArray = Java.type("double[]");
+var StringArray = Java.type("java.lang.String[]");
+
+var map = Array.prototype.map;
+var filter = Array.prototype.filter;
+var reduce = Array.prototype.reduce;
+
+var jarr = new StringArray(5);
+jarr[0] = "nashorn";
+jarr[1] = "ecmascript";
+jarr[2] = "javascript";
+jarr[3] = "js";
+jarr[4] = "scheme";
+
+// sum of word lengths
+print("Sum word length:",
+ reduce.call(
+ map.call(jarr, function(x) x.length),
+ function(x, y) x + y)
+);
+
+// another array example involving numbers
+jarr = new DoubleArray(10);
+// make random array of numbers
+for (var i = 0; i < jarr.length; i++)
+ jarr[i] = Math.random();
+
+var forEach = Array.prototype.forEach;
+// print numbers in the array
+forEach.call(jarr, function(x) print(x));
+
+// print sum of squares of the random numbers
+print("Square sum:",
+ reduce.call(
+ map.call(jarr, function(x) x*x),
+ function(x, y) x + y)
+);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/astviewer.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,98 @@
+#// Usage: jjs -scripting -fx astviewer.js -- <scriptfile>
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+if (!$OPTIONS._fx) {
+ print("Usage: jjs -scripting -fx astviewer.js -- <.js file>");
+ exit(1);
+}
+
+// Using JavaFX from Nashorn. See also:
+// http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html
+
+// This example shows AST of a script file as a JavaFX
+// tree view in a window. If no file is specified, AST of
+// this script file is shown. This script demonstrates
+// 'load' function, JavaFX support by -fx, readFully function
+// in scripting mode.
+
+// JavaFX classes used
+var StackPane = Java.type("javafx.scene.layout.StackPane");
+var Scene = Java.type("javafx.scene.Scene");
+var TreeItem = Java.type("javafx.scene.control.TreeItem");
+var TreeView = Java.type("javafx.scene.control.TreeView");
+
+// Create a javafx TreeItem to view a AST node
+function treeItemForASTNode(ast, name) {
+ var item = new TreeItem(name);
+ for (var prop in ast) {
+ var node = ast[prop];
+ if (typeof node == 'object') {
+ if (node == null) {
+ // skip nulls
+ continue;
+ }
+
+ if (Array.isArray(node) && node.length == 0) {
+ // skip empty arrays
+ continue;
+ }
+
+ var subitem = treeItemForASTNode(node, prop);
+ } else {
+ var subitem = new TreeItem(prop + ": " + node);
+ }
+ item.children.add(subitem);
+ }
+ return item;
+}
+
+// do we have a script file passed? if not, use current script
+var sourceName = arguments.length == 0? __FILE__ : arguments[0];
+
+// load parser.js from nashorn resources
+load("nashorn:parser.js");
+
+// read the full content of the file and parse it
+// to get AST of the script specified
+var ast = parse(readFully(sourceName));
+
+// JavaFX start method
+function start(stage) {
+ stage.title = "AST Viewer";
+ var rootItem = treeItemForASTNode(ast, sourceName);
+ var tree = new TreeView(rootItem);
+ var root = new StackPane();
+ root.children.add(tree);
+ stage.scene = new Scene(root, 300, 450);
+ stage.show();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/barchart_weather.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,116 @@
+#// Usage: jjs -fx barchart_weather.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Example that retrieves weather data from a URL in JSON
+// format and draws bar chart using JavaFX
+
+// -fx check
+if (! $OPTIONS._fx) {
+ print("Usage: jjs -fx barchart_weather.js");
+ exit(1);
+}
+
+// Java classes used
+var URL = Java.type("java.net.URL");
+var BufferedReader = Java.type("java.io.BufferedReader");
+var InputStreamReader = Java.type("java.io.InputStreamReader");
+
+// function to retrieve text content of the given URL
+function readTextFromURL(url) {
+ var str = '';
+ var u = new URL(url);
+ var reader = new BufferedReader(
+ new InputStreamReader(u.openStream()));
+ try {
+ reader.lines().forEach(function(x) str += x);
+ return str;
+ } finally {
+ reader.close();
+ }
+}
+
+// change URL for your city here!
+var url = "http://api.openweathermap.org/data/2.5/forecast?q=chennai,india&units=metric&mode=json";
+
+// download JSON document and parse
+var json = readTextFromURL(url);
+var weather = JSON.parse(json);
+
+// View JSON of this using site such as http://www.jsoneditoronline.org/ to know
+// about the JSON data format used by this site
+
+// Extracted data from the json object
+var temp = weather.list.map(function(x) x.main.temp);
+var temp_min = weather.list.map(function(x) x.main.temp_min);
+var temp_max = weather.list.map(function(x) x.main.temp_max);
+var date = weather.list.map(function(x) x.dt_txt);
+
+// JavaFX classes used
+var Scene = Java.type("javafx.scene.Scene");
+var BarChart = Java.type("javafx.scene.chart.BarChart");
+var CategoryAxis = Java.type("javafx.scene.chart.CategoryAxis");
+var NumberAxis = Java.type("javafx.scene.chart.NumberAxis");
+var XYChart = Java.type("javafx.scene.chart.XYChart");
+
+function start(stage) {
+ stage.title="Chennai Weather Bar Chart";
+ var xAxis = new CategoryAxis();
+ xAxis.label = "date/time";
+ var yAxis = new NumberAxis();
+ yAxis.label = "temp in C";
+ var bc = new BarChart(xAxis, yAxis);
+
+ // 3 bars per datetime item - temp, min temp and max temp
+ var s1 = new XYChart.Series();
+ s1.name = "temp";
+ for (d in date) {
+ s1.data.add(new XYChart.Data(date[d], temp[d]));
+ }
+
+ var s2 = new XYChart.Series();
+ s2.name = "min temp";
+ for (d in date) {
+ s2.data.add(new XYChart.Data(date[d], temp_min[d]));
+ }
+
+ var s3 = new XYChart.Series();
+ s3.name = "max temp";
+ for (d in date) {
+ s3.data.add(new XYChart.Data(date[d], temp_max[d]));
+ }
+
+ bc.data.addAll(s1, s2, s3);
+
+ stage.scene = new Scene(bc, 800, 600);
+ stage.show();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/call_lambda.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn allows you treat every Java8 lambda as a function
+
+var JFunction = Java.type("java.util.function.Function");
+var obj = new JFunction() {
+ apply: function(x) {
+ print(x + ", lambda");
+ }
+};
+
+// prints 'function'
+print(typeof obj);
+
+// call it!
+obj("hello");
--- a/nashorn/samples/counters.js Wed May 07 14:07:19 2014 +0530
+++ b/nashorn/samples/counters.js Wed May 07 20:20:58 2014 +0530
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -33,7 +33,11 @@
* This file can be run along with any script you want to run
* to print aggregate stat counters from nashorn.
*
- * Usage: jjs <your-file.js> counters.js
+ * Usage: jjs -J-Dnashorn.debug <your-file.js> counters.js
*/
-Debug.dumpCounters();
+if (java.lang.System.getProperty("nashorn.debug") == null) {
+ print("Usage: jjs -J-Dnashorn.debug <your-file.js> counters.js");
+} else {
+ Debug.dumpCounters();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/dirname.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// __DIR__ variable is equivalent of `dirname $0` in
+// shell scripts - expands to the directory where
+// the current script is located.
+
+print("This script is in the directory: " + __DIR__);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/disassemble.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Usage: jjs disassemble.js -- <.class-file-path>
+
+// Simple .class disassembler that uses bundled ObjectWeb ASM
+// classes in jdk8. WARNING: Bundled ObjectWeb ASM classes are
+// not part of official jdk8 API. It can be changed/removed
+// without notice. So, this script is brittle by design!
+
+// This example demonstrates passing arguments to script
+// from jjs command line, nio and ASM usage.
+
+// classes used
+var FileSystems = Java.type("java.nio.file.FileSystems");
+var Files = Java.type("java.nio.file.Files");
+var System = Java.type("java.lang.System");
+var PrintWriter = Java.type("java.io.PrintWriter");
+
+// WARNING: uses non-API classes of jdk8!
+var ClassReader = Java.type("jdk.internal.org.objectweb.asm.ClassReader");
+var TraceClassVisitor = Java.type("jdk.internal.org.objectweb.asm.util.TraceClassVisitor");
+
+// convert file name to Path instance
+function path(file) {
+ return FileSystems.default.getPath(file);
+}
+
+// read all file content as a byte[]
+function readAllBytes(file) {
+ return Files.readAllBytes(path(file));
+}
+
+// disassemble .class byte[] and prints output to stdout
+function disassemble(bytecode) {
+ var pw = new PrintWriter(System.out);
+ new ClassReader(bytecode).accept(new TraceClassVisitor(pw), 0);
+}
+
+// check for command line arg (for .class file name)
+if (arguments.length == 0 || !arguments[0].endsWith('.class')) {
+ print("Usage: jjs disassemble -- <.class file>");
+ exit(1);
+}
+
+// disassemble the given .class file
+disassemble(readAllBytes(arguments[0]));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/README Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,1 @@
+Using javax.script engine API of nashorn from script!
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/accessvar.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple example showing global variable access from caller
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// eval code!
+engine.eval("x = 'hello'");
+
+// access global var from engine
+print(engine.get('x'));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/callfunc.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// simple example showing how to call a global script
+// function from caller
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// eval code!
+engine.eval("function func(name) { print('I am func, hello ' + name) }");
+
+// invoke functions, methods of code evaluated by engine
+// from javax.script.Invocable interface. But, hey,
+// calling code is JavaScript and don't worry about types :)
+
+engine.invokeFunction("func", "Nashorn");
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/callmethod.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,64 @@
+#// Usage: jjs -scripting callmethod.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// simple example demonstrating calling a script object
+// method from script engine user code
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// eval code - too many script escapes?
+// use heredoc !
+engine.eval(<<CODE
+ var obj = {
+ func: function() {
+ print("I am func of " + this);
+ },
+
+ toString: function() {
+ return "Object 'obj'";
+ }
+ };
+CODE);
+
+// invoke methods of an object in script world
+// from javax.script.Invocable interface. But, hey,
+// calling code is JavaScript and don't worry about types :)
+
+// get that script object on which to call a method
+var scriptObj = engine.get("obj");
+// call 'func' method on object 'obj'
+engine.invokeMethod(scriptObj, "func");
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/exposevar.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Example showing how to expose a script global var from caller
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// expose variable to engine
+engine.put("name", "Nashorn");
+
+// access it from script
+engine.eval("print('Hello, ' + name)");
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/foreignobject.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,71 @@
+#// Usage: jjs -scripting foreignobject.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// cross nashorn engine scripting
+// access script objects from other engines in natural syntax
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// eval code!
+engine.eval(<<CODE
+ var obj = {
+ foo: 42,
+ func: function() {
+ print("func: " + this.foo);
+ }
+ };
+CODE);
+
+// Nashorn engine returns script objects as instance of
+// the class jdk.nashorn.api.scripting.ScriptObjectMirror
+// But nashorn's dynalink linker can treat these objects
+// specially to support natural script syntax to access..
+// In Java code, you need to use ScriptObjectMirror's
+// methods though. Once again, script world is simpler :-)
+
+var foreignObj = engine.get("obj");
+// access properties, functions of it
+// with natural syntax
+print(foreignObj.foo);
+foreignObj.func();
+print(typeof foreignObj.func);
+
+// access engine's global
+var foreignGlobal = engine.eval("this");
+// create objects in engine's world from here!
+print(new foreignGlobal.Object());
+print(new foreignGlobal.Date());
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/hello.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple hello world example showing create engine
+// and eval simple script
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+// eval code!
+engine.eval("print('hello world')");
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/interface.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,60 @@
+#// Usage: jjs -scripting interface.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Example demonstrating how to implement a Java interface
+// whose methods are backed by global script functions
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// eval code - too many script escapes?
+// use heredoc !
+engine.eval(<<CODE
+function run() {
+ print("run global function called");
+}
+CODE);
+
+// create Java interface object whose methods are
+// implemented by script functions. This is from
+// javax.script.Invocable. But we are in JS world,
+// don't worry about types :)
+
+var Runnable = Java.type("java.lang.Runnable");
+var r = engine.getInterface(Runnable.class);
+print(r.class);
+
+r.run();
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/interface2.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,63 @@
+#// Usage: jjs -scripting interface2.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple example demonstrating how to implement java interface
+// whose methods are backed by script methods of a script object
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// eval code - too many script escapes?
+// use heredoc !
+engine.eval(<<CODE
+ var obj = {
+ run: function() {
+ print("I am run method of 'obj'");
+ }
+ };
+CODE);
+
+// create Java interface object whose methods are
+// implemented by script methods of a script object
+// This is from javax.script.Invocable. But we are
+// in JS world, don't worry about types :)
+
+var Runnable = Java.type("java.lang.Runnable");
+
+var scriptObj = engine.get("obj");
+var r = engine.getInterface(scriptObj, Runnable.class);
+print(r.class);
+r.run();
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/engine/lambda_as_func.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple example demonstrating how to expose 'function's
+// from embedding code. Any lambda object exposed to engine
+// can be called as 'function' in script.
+
+var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
+// create manager
+var manager = new ScriptEngineManager();
+// create engine
+var engine = manager.getEngineByName("js");
+
+// Any lambda (@FunctionalInterface annotated type) object can be
+// be exposed from script embedding code. Script can call
+// it as a function
+engine.put("upper", new java.util.function.Function() {
+ apply: function(x) x.toUpperCase()
+});
+
+print(engine.eval("upper('hello')"));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/env.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,43 @@
+#// Usage: jjs -scripting env.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// In nashorn -scripting mode,
+// "$ENV" object exposes process
+// environment variables
+
+print($ENV.PATH);
+print($ENV.JAVA_HOME);
+
+for (i in $ENV) {
+ print(i, "->", $ENV[i]);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/expression_closure.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn supports expression closures extension of
+// Mozilla JavaScript 1.8. See also
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/1.8
+
+// leave {, } and 'return' keyword
+
+function sqr(x) x*x;
+
+// prints 289 (= 17*17)
+print(sqr(17));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/fileline.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn supports pseudo global variables __FILE__
+// and __LINE__ that expands to currently executed
+// script file name and current script line number
+
+// prints current file and line number
+print("executing " + __FILE__ + " @ " + __LINE__);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/fizzbuzz.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// What is FizzBuzz? http://c2.com/cgi/wiki?FizzBuzzTest
+
+// Yet another FizzBuzz impl. using Java 8 lambda and stream
+// but using Nashorn. This is ECMAScript port of @stuartmarks'
+// Java implementation
+
+var IntStream = Java.type("java.util.stream.IntStream");
+
+function ifmod(m, r, f) {
+ return function(i) { return i % m == 0? r : f(i); }
+}
+
+// pass script function for lambda
+IntStream.rangeClosed(1, 100).
+ mapToObj(
+ ifmod(15, "FizzBuzz", ifmod(5, "Buzz", ifmod(3, "Fizz", String))))
+ .forEach(print);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/for_each.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn supports for..each extension supported
+// by Mozilla. See also
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for_each...in
+
+var strs = [ "hello", "world" ];
+for each (str in strs)
+ print(str);
+
+// create a java int[] object
+var JArray = Java.type("int[]");
+var arr = new JArray(10);
+
+// store squares as values
+for (i in arr)
+ arr[i] = i*i;
+
+// for .. each on java arrays
+print("squares");
+for each (i in arr)
+ print(i);
+
+var System = Java.type("java.lang.System");
+
+// for..each on java Iterables
+// print System properties as name = value pairs
+print("System properties");
+for each (p in System.properties.entrySet()) {
+ print(p.key, "=", p.value);
+}
+
+// print process environment vars as name = value pairs
+print("Process environment");
+for each (e in System.env.entrySet()) {
+ print(e.key, "=", e.value);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/gaussian_random.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// print 100 Guassian distributed numbers
+
+var Random = Java.type("java.util.Random");
+var DoubleStream = Java.type("java.util.stream.DoubleStream");
+
+var r = new Random();
+
+// expression closure (see expression_closure.js as well)
+// passed as lambda double generator. "print" passed as
+// double consumer lambda to 'forEach' method.
+
+DoubleStream
+ .generate(function() r.nextGaussian())
+ .limit(100)
+ .forEach(print);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/gaussian_random_bind.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// print 100 Guassian distributed numbers
+
+var Random = Java.type("java.util.Random");
+var DoubleStream = Java.type("java.util.stream.DoubleStream");
+
+// function as lambda double generator. "print" passed as
+// double consumer lambda to 'forEach' method.
+// Function.prototype.bind used to attach 'state' for the
+// generator function.
+
+DoubleStream
+ .generate(
+ function(r) {
+ return r.nextGaussian()
+ }.bind(this, new Random()))
+ .limit(100)
+ .forEach(print);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/gutenberg.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,142 @@
+#// Usage: jjs -scripting gutenberg.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple example that demonstrates reading XML Rss feed
+// to generate a HTML file from script and show it by browser
+
+// Java classes used
+var Characters = Java.type("javax.xml.stream.events.Characters");
+var Factory = Java.type("javax.xml.stream.XMLInputFactory");
+var File = Java.type("java.io.File");
+var FileWriter = Java.type("java.io.FileWriter");
+var PrintWriter = Java.type("java.io.PrintWriter");
+var URL = Java.type("java.net.URL");
+
+// read Rss feed from a URL. Returns an array
+// of objects having only title and link properties
+function readRssFeed(url) {
+ var fac = Factory.newInstance();
+ var reader = fac.createXMLEventReader(url.openStream());
+
+ // get text content from next event
+ function getChars() {
+ var result = "";
+ var e = reader.nextEvent();
+ if (e instanceof Characters) {
+ result = e.getData();
+ }
+ return result;
+ }
+
+ var items = [];
+ var title, link;
+ var inItem = false;
+ while (reader.hasNext()) {
+ var evt = reader.nextEvent();
+ if (evt.isStartElement()) {
+ var local = evt.name.localPart;
+ if (local == "item") {
+ // capture title, description now
+ inItem = true;
+ }
+
+ if (inItem) {
+ switch (local) {
+ case 'title':
+ title = getChars();
+ break;
+ case 'link':
+ link = getChars();
+ break;
+ }
+ }
+ } else if (evt.isEndElement()) {
+ var local = evt.name.localPart;
+ if (local == "item") {
+ // one item done, save it in result array
+ items.push({ title: title, link: link });
+ inItem = false;
+ }
+ }
+ }
+
+ return items;
+}
+
+// generate simple HTML for an RSS feed
+function getBooksHtml() {
+ var url = new URL("http://www.gutenberg.org/cache/epub/feeds/today.rss");
+ var items = readRssFeed(url);
+
+ var str = "<ul>";
+
+ // Nashorn's string interpolation and heredoc
+ // support is very handy in generating text content
+ // that is filled with elements from runtime objects.
+ // We insert title and link in <li> elements here.
+ for each (i in items) {
+ str += <<EOF
+<li>
+ <a href="${i.link}">${i.title}</a>
+</li>
+EOF
+ }
+ str += "</ul>";
+ return str;
+}
+
+// write the string to the given file
+function writeTo(file, str) {
+ var w = new PrintWriter(new FileWriter(file));
+ try {
+ w.print(str);
+ } finally {
+ w.close();
+ }
+}
+
+// generate books HTML
+var str = getBooksHtml();
+
+// write to file. __DIR__ is directory where
+// this script is stored.
+var file = new File(__DIR__ + "books.html");
+writeTo(file, str);
+
+// show it by desktop browser
+try {
+ var Desktop = Java.type("java.awt.Desktop");
+ Desktop.desktop.browse(file.toURI());
+} catch (e) {
+ print(e);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/heredoc.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,51 @@
+#// Usage: jjs -scripting heredoc.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Nashorn supports Shell script like here-documents
+// in -scripting mode. Here-docs are multi-line strings
+// that are possibly interpolated with ${} expressions
+// See also http://en.wikipedia.org/wiki/Here_document
+
+var sender = "Buffy the Vampire Slayer";
+var recipient = "Spike";
+
+print(<<END
+
+Dear ${recipient},
+
+I wish you to leave Sunnydale and never return.
+
+Not Quite Love,
+${sender}
+
+END);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/interface_impl.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn supports Java interface implementation
+// by script using anonymous class-like syntax
+
+var Runnable = Java.type("java.lang.Runnable");
+var Thread = Java.type("java.lang.Thread");
+// use anonymous class-like new syntax
+var r = new Runnable() {
+ run: function() {
+ print("I am a runnable " + Thread.currentThread());
+ }
+}
+
+r.run();
+
+var t = new Thread(r);
+t.start();
+t.join();
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/javaastviewer.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,202 @@
+#// Usage: jjs -fx javaastviewer.js -- <.java files>
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This example demonstrates Java subclassing by Java.extend
+// and javac Compiler and Tree API. This example also uses
+// -fx and javafx TreeView to visualize Java AST as TreeView
+
+if (!$OPTIONS._fx || arguments.length == 0) {
+ print("Usage: jjs -fx javaastviewer.js -- <.java files>");
+ exit(1);
+}
+
+// Java types used
+var Enum = Java.type("java.lang.Enum");
+var HashSet = Java.type("java.util.HashSet");
+var Name = Java.type("javax.lang.model.element.Name");
+var List = Java.type("java.util.List");
+var Set = Java.type("java.util.Set");
+var SimpleTreeVisitor = Java.type("com.sun.source.util.SimpleTreeVisitor");
+var StringArray = Java.type("java.lang.String[]");
+var ToolProvider = Java.type("javax.tools.ToolProvider");
+var Tree = Java.type("com.sun.source.tree.Tree");
+
+function javaASTToScriptObject(args) {
+ // properties ignored (javac implementation class properties) in AST view.
+ // may not be exhaustive - any getAbc would become "abc" property or
+ // public field becomes a property of same name.
+ var ignoredProps = new HashSet();
+ for each (var word in
+ ['extending', 'implementing', 'init', 'mods', 'clazz', 'defs',
+ 'expr', 'tag', 'preferredPosition', 'qualid', 'recvparam',
+ 'restype', 'params', 'startPosition', 'thrown',
+ 'tree', 'typarams', 'typetag', 'vartype']) {
+ ignoredProps.add(word);
+ }
+
+ // get the system compiler tool
+ var compiler = ToolProvider.systemJavaCompiler;
+
+ // get standard file manager
+ var fileMgr = compiler.getStandardFileManager(null, null, null);
+
+ // make a list of compilation unit from command line argument file names
+ // Using Java.to convert script array (arguments) to a Java String[]
+ var compUnits = fileMgr.getJavaFileObjects(Java.to(args, StringArray));
+
+ // create a new compilation task
+ var task = compiler.getTask(null, fileMgr, null, null, null, compUnits);
+
+ // subclass SimpleTreeVisitor - converts Java AST node to
+ // a simple script object by walking through it
+ var ConverterVisitor = Java.extend(SimpleTreeVisitor);
+
+ var visitor = new ConverterVisitor() {
+ // convert java AST node to a friendly script object
+ // which can be viewed. Every node ends up in defaultAction
+ // method of SimpleTreeVisitor method.
+
+ defaultAction: function (node, p) {
+ var resultObj = {};
+ // Nashorn does not iterate properties and methods of Java objects
+ // But, we can bind properties of any object (including java objects)
+ // to a script object and iterate it!
+ var obj = {};
+ Object.bindProperties(obj, node);
+
+ // we don't want every property, method of java object
+ for (var prop in obj) {
+ var val = obj[prop];
+ var type = typeof val;
+ // ignore 'method' members
+ if (type == 'function' || type == 'undefined') {
+ continue;
+ }
+
+ // ignore properties from Javac implementation
+ // classes - hack by name!!
+ if (ignoredProps.contains(prop)) {
+ continue;
+ }
+
+ // subtree - recurse it
+ if (val instanceof Tree) {
+ resultObj[prop] = visitor.visit(val, p);
+ } else if (val instanceof List) {
+ // List of trees - recurse each and make an array
+ var len = val.size();
+ if (len != 0) {
+ var arr = [];
+ for (var j = 0; j < len; j++) {
+ var e = val[j];
+ if (e instanceof Tree) {
+ arr.push(visitor.visit(e, p));
+ }
+ }
+ resultObj[prop] = arr;
+ }
+ } else if (val instanceof Set) {
+ // Set - used for modifier flags
+ // make array
+ var len = val.size();
+ if (len != 0) {
+ var arr = [];
+ for each (var e in val) {
+ if (e instanceof Enum || typeof e == 'string') {
+ arr.push(e.toString());
+ }
+ }
+ resultObj[prop] = arr;
+ }
+ } else if (val instanceof Enum || val instanceof Name) {
+ // make string for any Enum or Name
+ resultObj[prop] = val.toString();
+ } else if (type != 'object') {
+ // primitives 'as is'
+ resultObj[prop] = val;
+ }
+ }
+ return resultObj;
+ }
+ }
+
+ // top level object with one property for each compilation unit
+ var scriptObj = {};
+ for each (var cu in task.parse()) {
+ scriptObj[cu.sourceFile.name] = cu.accept(visitor, null);
+ }
+
+ return scriptObj;
+}
+
+// JavaFX classes used
+var StackPane = Java.type("javafx.scene.layout.StackPane");
+var Scene = Java.type("javafx.scene.Scene");
+var TreeItem = Java.type("javafx.scene.control.TreeItem");
+var TreeView = Java.type("javafx.scene.control.TreeView");
+
+// Create a javafx TreeItem to view a script object
+function treeItemForObject(obj, name) {
+ var item = new TreeItem(name);
+ for (var prop in obj) {
+ var node = obj[prop];
+ if (typeof node == 'object') {
+ if (node == null) {
+ // skip nulls
+ continue;
+ }
+ var subitem = treeItemForObject(node, prop);
+ } else {
+ var subitem = new TreeItem(prop + ": " + node);
+ }
+ item.children.add(subitem);
+ }
+
+ item.expanded = true;
+ return item;
+}
+
+var commandArgs = arguments;
+
+// JavaFX start method
+function start(stage) {
+ var obj = javaASTToScriptObject(commandArgs);
+ stage.title = "Java AST Viewer"
+ var rootItem = treeItemForObject(obj, "AST");
+ rootItem.expanded = true;
+ var tree = new TreeView(rootItem);
+ var root = new StackPane();
+ root.children.add(tree);
+ stage.scene = new Scene(root, 300, 450);
+ stage.show();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/javacastcounter.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Usage: jjs javacastcounter.js -- <.java files>
+
+// This example demonstrates Nashorn Java.extend API
+// to subclass a Java class from script.
+
+// This example uses Javac Compiler and Tree API
+// to list type casts used in java source files.
+
+if (arguments.length == 0) {
+ print("Usage: jjs javacastcounter.js -- <.java files>");
+ exit(1);
+}
+
+// Java types used
+var ToolProvider = Java.type("javax.tools.ToolProvider");
+var TreeScanner = Java.type("com.sun.source.util.TreeScanner");
+var Trees = Java.type("com.sun.source.util.Trees");
+var StringArray = Java.type("java.lang.String[]");
+
+// get the system compiler tool
+var compiler = ToolProvider.systemJavaCompiler;
+
+// get standard file manager
+var fileMgr = compiler.getStandardFileManager(null, null, null);
+
+// make a list of compilation unit from command line argument file names
+// Using Java.to convert script array (arguments) to a Java String[]
+var compUnits = fileMgr.getJavaFileObjects(Java.to(arguments, StringArray));
+
+// create a new compilation task
+var task = compiler.getTask(null, fileMgr, null, null, null, compUnits);
+
+// SourcePositions object to get positions of AST nodes
+var sourcePositions = Trees.instance(task).sourcePositions;
+
+// Subclass TreeScanner class
+var CastCounter = Java.extend(TreeScanner);
+
+var counter = new CastCounter() {
+ // current CompilationUnitTree
+ compUnit: null,
+ // current LineMap (pos -> line, column)
+ lineMap: null,
+ // current compilation unit's file name
+ fileName: null,
+
+ // overrides of TreeScanner methods
+
+ visitCompilationUnit: function(node, p) {
+ // capture info about current Compilation unit
+ this.compUnit = node;
+ this.lineMap = node.lineMap;
+ this.fileName = node.sourceFile.name;
+
+ // Using Java.super API to call super class method here
+ return Java.super(counter).visitCompilationUnit(node, p);
+ },
+
+ visitTypeCast: function(node, p) {
+ // print information on this type cast node
+ var pos = sourcePositions.getStartPosition(this.compUnit, node);
+ var line = this.lineMap.getLineNumber(pos);
+ var col = this.lineMap.getColumnNumber(pos);
+ print(node + " @ " + this.fileName + ":" + line + ":" + col);
+
+ // count one more type cast
+ return 1;
+ },
+
+ reduce: function(r1, r2) {
+ return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2);
+ }
+};
+
+// print total number of type cast nodes seen
+print("Total casts:", counter.scan(task.parse(), null));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/javaimporter.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// JavaImporter along with 'with' statement helps in
+// localized Java class references
+
+function readTextFromURL(url) {
+
+ // equivalent to
+ //
+ // import java.io.*;
+ // import java.net.*;
+ // import java.lang.StringBuffer;
+ //
+ // only inside the 'with' statement
+ with (new JavaImporter(java.io,
+ java.net,
+ java.lang.StringBuilder)) {
+ var buf = new StringBuilder();
+ var u = new URL(url);
+ var reader = new BufferedReader(
+ new InputStreamReader(u.openStream()));
+ var line = null;
+ try {
+ while ((line = reader.readLine()) != null)
+ buf.append(line).append('\n');
+ } finally {
+ reader.close();
+ }
+
+ return buf.toString();
+ }
+}
+
+print(readTextFromURL("https://twitter.com/"));
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/javalist.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Java List elements accessed/modified via
+// array element access/update syntax
+
+var ArrayList = Java.type("java.util.ArrayList");
+var list = new ArrayList();
+
+// add elements to list by List's add method calls
+list.add("js");
+list.add("ecmascript");
+list.add("nashorn");
+
+// get by List's get(int) method
+print(list[0]);
+print(list[1]);
+print(list[2]);
+
+// access list elements by indexed access as well
+print(list[0]);
+print(list[1]);
+print(list[2]);
+
+// assign to list elements by index as well
+list[0] = list[0].toUpperCase();
+list[1] = list[1].toUpperCase();
+list[2] = list[2].toUpperCase();
+
+print(list.get(0));
+print(list.get(1));
+print(list.get(2));
+print(list[0]);
+print(list[1]);
+print(list[2]);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/javamap.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Java Map keys as properties
+
+// Demonstrating Java Map key/value can be accessed
+// as property/value from script.
+
+var HashMap = Java.type("java.util.HashMap");
+var map = new HashMap();
+
+// map key-value access by java get/put method calls
+map.put('js', 'nashorn');
+print(map.get('js'));
+
+// access keys of map as properties
+print(map['js']);
+print(map.js);
+
+// also assign new key-value pair
+// as 'property-value'
+map['language'] = 'java';
+print(map.get("language"));
+print(map.language);
+print(map['language']);
+
+map.answer = 42;
+print(map.get("answer"));
+print(map.answer);
+print(map['answer']);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/javashell.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,146 @@
+#// Usage: jjs -scripting javashell.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple Java "shell" with which you can try out
+// your few liner Java code leaving imports, main etc.
+// And you can leave even compilation as this script
+// takes care boilerplate+compile step for you.
+
+// Java types used
+var Arrays = Java.type("java.util.Arrays");
+var BufferedReader = Java.type("java.io.BufferedReader");
+var FileWriter = Java.type("java.io.FileWriter");
+var LocalDateTime = Java.type("java.time.LocalDateTime");
+var InputStreamReader = Java.type("java.io.InputStreamReader");
+var PrintWriter = Java.type("java.io.PrintWriter");
+var ProcessBuilder = Java.type("java.lang.ProcessBuilder");
+var System = Java.type("java.lang.System");
+
+// read multiple lines of input from stdin till user
+// enters an empty line
+function input(endMarker, prompt) {
+ if (!endMarker) {
+ endMarker = "";
+ }
+
+ if (!prompt) {
+ prompt = " >> ";
+ }
+
+ var str = "";
+ var reader = new BufferedReader(new InputStreamReader(System.in));
+ var line;
+ while (true) {
+ System.out.print(prompt);
+ line = reader.readLine();
+ if (line == null || line == endMarker) {
+ break;
+ }
+ str += line + "\n";
+ }
+ return str;
+}
+
+// write the string to the given file
+function writeTo(file, str) {
+ var w = new PrintWriter(new FileWriter(file));
+ try {
+ w.print(str);
+ } finally {
+ w.close();
+ }
+}
+
+// generate Java code with user's input
+// put inside generated main method
+function generate(className) {
+ var usercode = input();
+ if (usercode == "") {
+ return false;
+ }
+
+ var fullcode = <<EOF
+// userful imports, add more here if you want
+// more imports.
+import static java.lang.System.*;
+import java.io.*;
+import java.net.*;
+import java.math.*;
+import java.nio.file.*;
+import java.time.*;
+import java.time.chrono.*;
+import java.time.format.*;
+import java.time.temporal.*;
+import java.time.zone.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.function.*;
+import java.util.stream.*;
+
+public class ${className} {
+ public static void main(String[] args) throws Exception {
+ ${usercode}
+ }
+}
+EOF
+
+ writeTo("${className}.java", fullcode);
+ return true;
+}
+
+// execute code command
+function exec(args) {
+ // build child process and start it!
+ new ProcessBuilder(Arrays.asList(args.split(' ')))
+ .inheritIO()
+ .start()
+ .waitFor();
+}
+
+// generate unique name
+function uniqueName() {
+ var now = LocalDateTime.now().toString();
+ // replace unsafe chars with '_'
+ return "JavaShell" + now.replace(/-|:|\./g, '_');
+}
+
+// read-compile-run loop
+while(true) {
+ var className = uniqueName();
+ if (generate(className)) {
+ exec("javac ${className}.java");
+ exec("java ${className}");
+ } else {
+ break;
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/jsadapter_dom.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,189 @@
+#// Usage: jjs -scripting jsadapter_dom.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple example that demonstrates reading XML Rss feed
+// to generate a HTML file from script and show it by browser
+// Uses XML DOM parser and DOM element wrapped by script
+// "proxy" (JSAdapter constructor)
+
+// Java classes used
+var DocBuilderFac = Java.type("javax.xml.parsers.DocumentBuilderFactory");
+var Node = Java.type("org.w3c.dom.Node");
+var File = Java.type("java.io.File");
+var FileWriter = Java.type("java.io.FileWriter");
+var PrintWriter = Java.type("java.io.PrintWriter");
+
+// constants from Node class
+var ELEMENT_NODE = Node.ELEMENT_NODE;
+var TEXT_NODE = Node.TEXT_NODE;
+
+// parse XML from uri and return Document
+function parseXML(uri) {
+ var docBuilder = DocBuilderFac.newInstance().newDocumentBuilder();
+ return docBuilder["parse(java.lang.String)"](uri);
+}
+
+// get child Elements of given name of the parent element given
+function getChildElements(elem, name) {
+ var nodeList = elem.childNodes;
+ var childElems = [];
+ var len = nodeList.length;
+ for (var i = 0; i < len; i++) {
+ var node = nodeList.item(i);
+ if (node.nodeType == ELEMENT_NODE &&
+ node.tagName == name) {
+ childElems.push(wrapElement(node));
+ }
+ }
+
+ return childElems;
+}
+
+// get concatenated child text content of an Element
+function getElemText(elem) {
+ var nodeList = elem.childNodes;
+ var len = nodeList.length;
+ var text = '';
+ for (var i = 0; i < len; i++) {
+ var node = nodeList.item(i);
+ if (node.nodeType == TEXT_NODE) {
+ text += node.nodeValue;
+ }
+ }
+
+ return text;
+}
+
+// Wrap DOM Element object as a convenient script object
+// using JSAdapter. JSAdapter is like java.lang.reflect.Proxy
+// in that it allows property access, method calls be trapped
+// by 'magic' methods like __get__, __call__.
+function wrapElement(elem) {
+ if (! elem) {
+ return elem;
+ }
+ return new JSAdapter() {
+ // getter to expose child elements and attributes by name
+ __get__: function(name) {
+ if (typeof name == 'string') {
+ if (name.startsWith('@')) {
+ var attr = elem.getAttributeNode(name.substring(1));
+ return !attr? undefined : attr.value;
+ }
+
+ var arr = getChildElements(elem, name);
+ if (arr.length == 1) {
+ // single child element, expose as single element
+ return arr[0];
+ } else {
+ // multiple children of given name, expose as array
+ return arr;
+ }
+ }
+ return undefined;
+ },
+
+ __call__: function(name) {
+ // toString override to get text content of this Element
+ if (name == 'toString' || name == 'valueOf') {
+ return getElemText(elem);
+ }
+ return undefined;
+ }
+ }
+}
+
+// generate HTML using here-doc and string interpolation
+function getBooksHtml() {
+ var doc = parseXML("http://www.gutenberg.org/cache/epub/feeds/today.rss");
+ // wrap document root Element as script convenient object
+ var rss = wrapElement(doc.documentElement);
+ print("rss file version " + rss['@version']);
+
+ var str = <<HEAD
+
+<html>
+<title>${rss.channel.title}</title>
+<body>
+<h1>${rss.channel.description}</h1>
+<p>
+Published on ${rss.channel.pubDate}
+</p>
+
+HEAD
+
+ var items = rss.channel.item;
+ for each (var i in items) {
+ str += <<LIST
+
+<dl>
+<dt><a href="${i.link}">${i.title}</a></dt>
+<dd>${i.description}</dd>
+</dl>
+
+LIST
+ }
+ str += <<END
+
+</body>
+</html>
+
+END
+ return str;
+}
+
+// write the string to the given file
+function writeTo(file, str) {
+ var w = new PrintWriter(new FileWriter(file));
+ try {
+ w.print(str);
+ } finally {
+ w.close();
+ }
+}
+
+// generate books HTML
+var str = getBooksHtml();
+
+// write to file. __DIR__ is directory where
+// this script is stored.
+var file = new File(__DIR__ + "books.html");
+writeTo(file, str);
+
+// show it by desktop browser
+try {
+ var Desktop = Java.type("java.awt.Desktop");
+ Desktop.desktop.browse(file.toURI());
+} catch (e) {
+ print(e);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/jsobject.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,75 @@
+#// Usage: jjs -scripting -cp . jsobject.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This sample demonstrats how to expose a
+// script friendly object from your java code
+// by implementing jdk.nashorn.api.scripting.JSObject
+
+// compile the java program
+`javac BufferArray.java`;
+
+// print error, if any and exit
+if ($ERR != '') {
+ print($ERR);
+ exit($EXIT);
+}
+
+// create BufferArray
+var BufferArray = Java.type("BufferArray");
+var bb = new BufferArray(10);
+
+// 'magic' methods called to retrieve set/get
+// properties on BufferArray instance
+var len = bb.length;
+print("bb.length = " + len)
+for (var i = 0; i < len; i++) {
+ bb[i] = i*i;
+}
+
+for (var i = 0; i < len; i++) {
+ print(bb[i]);
+}
+
+// get underlying buffer by calling a method
+// on BufferArray magic object
+
+// 'buf' is a function member
+print(typeof bb.buf);
+var buf = bb.buf();
+
+// use retrieved underlying nio buffer
+var cap = buf.capacity();
+print("buf.capacity() = " + cap);
+for (var i = 0; i < cap; i++) {
+ print(buf.get(i));
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/jsobject_mapreduce.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,62 @@
+#// Usage: jjs -scripting -cp . jsobject_mapreduce.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Many Array.prototype functions such as map,
+// filter, reduce, reduceRight, every, some are generic.
+// These functions accept ECMAScript array as well as
+// many array-like objects including JSObjects.
+// See also http://en.wikipedia.org/wiki/MapReduce
+
+`javac BufferArray.java`;
+
+var BufferArray = Java.type("BufferArray");
+var buf = new BufferArray(10);
+
+var map = Array.prototype.map;
+var filter = Array.prototype.filter;
+var reduce = Array.prototype.reduce;
+
+// make random list of numbers
+for (var i = 0; i < 10; i++)
+ buf[i] = Math.random();
+
+var forEach = Array.prototype.forEach;
+// print numbers in the list
+forEach.call(buf, function(x) print(x));
+
+// print sum of squares of the random numbers
+print("Square sum:",
+ reduce.call(
+ map.call(buf, function(x) x*x),
+ function(x, y) x + y)
+);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/jsonviewer.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,120 @@
+#// Usage: jjs -fx jsonviewer.js
+// or
+// jjs -fx jsonviewer.js -- <url-of-json-doc>
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+if (! $OPTIONS._fx) {
+ print("Usage: jjs -fx jsonviewer.js -- <url-of-json-doc>");
+ exit(1);
+}
+
+// This example downloads a JSON file from a URL and
+// shows the same as a JavaFX tree view.
+
+// Using JavaFX from Nashorn. See also:
+// http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html
+
+// JavaFX classes used
+var StackPane = Java.type("javafx.scene.layout.StackPane");
+var Scene = Java.type("javafx.scene.Scene");
+var TreeItem = Java.type("javafx.scene.control.TreeItem");
+var TreeView = Java.type("javafx.scene.control.TreeView");
+
+// read text content of a URL
+function readTextFromURL(url) {
+ // equivalent to
+ //
+ // import java.io.*;
+ // import java.net.*;
+ // import java.lang.StringBuffer;
+ //
+ // only inside the 'with' statement
+ with (new JavaImporter(java.io,
+ java.net,
+ java.lang.StringBuilder)) {
+ var buf = new StringBuilder();
+ var u = new URL(url);
+ var reader = new BufferedReader(
+ new InputStreamReader(u.openStream()));
+ var line = null;
+ try {
+ while ((line = reader.readLine()) != null)
+ buf.append(line).append('\n');
+ } finally {
+ reader.close();
+ }
+
+ return buf.toString();
+ }
+}
+
+// Create a javafx TreeItem to view a script object
+function treeItemForObject(obj, name) {
+ var item = new TreeItem(name);
+ for (var prop in obj) {
+ var node = obj[prop];
+ if (typeof node == 'object') {
+ if (node == null) {
+ // skip nulls
+ continue;
+ }
+
+ if (Array.isArray(node) && node.length == 0) {
+ // skip empty arrays
+ continue;
+ }
+
+ var subitem = treeItemForObject(node, prop);
+ } else {
+ var subitem = new TreeItem(prop + ": " + node);
+ }
+ item.children.add(subitem);
+ }
+ return item;
+}
+
+var DEFAULT_URL = "http://api.openweathermap.org/data/2.5/forecast/daily?q=Chennai&mode=json&units=metric&cnt=7`";
+
+var url = arguments.length == 0? DEFAULT_URL : arguments[0];
+var obj = JSON.parse(readTextFromURL(url));
+
+// JavaFX start method
+function start(stage) {
+ stage.title = "JSON Viewer";
+ var rootItem = treeItemForObject(obj, url);
+ var tree = new TreeView(rootItem);
+ var root = new StackPane();
+ root.children.add(tree);
+ stage.scene = new Scene(root, 300, 450);
+ stage.show();
+}
--- a/nashorn/samples/letter.js Wed May 07 14:07:19 2014 +0530
+++ b/nashorn/samples/letter.js Wed May 07 20:20:58 2014 +0530
@@ -1,3 +1,5 @@
+#// Usage: jjs -scripting letter.js -- <sender> <recipient>
+
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/list_mapreduce.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Usage: jjs list_mapreduce.js
+
+// Many Array.prototype functions such as map,
+// filter, reduce, reduceRight, every, some are generic.
+// These functions accept ECMAScript array as well as
+// many array-like objects including java.util.ArrayLists.
+// So, you can do map/filter/reduce with Java streams or
+// you can also use Array.prototype functions as below.
+// See also http://en.wikipedia.org/wiki/MapReduce
+
+var ArrayList = Java.type("java.util.ArrayList");
+var list = new ArrayList();
+list.add("nashorn");
+list.add("ecmascript");
+list.add("javascript");
+list.add("js");
+list.add("scheme");
+
+var map = Array.prototype.map;
+var filter = Array.prototype.filter;
+var reduce = Array.prototype.reduce;
+
+// sum of word lengths
+print("Sum word length:",
+ reduce.call(
+ map.call(list, function(x) x.length),
+ function(x, y) x + y)
+);
+
+// filter use to filter out "j*" and concatenate rest with ":"
+// after uppercasing all strings
+print(
+ reduce.call(
+ map.call(
+ filter.call(list, function(x) !x.startsWith("j")),
+ function(x) x.toUpperCase()),
+ function(x, y) x + ":" + y)
+);
+
+// another list example involving numbers
+list.clear();
+// make random list of numbers
+for (var i = 0; i < 10; i++)
+ list.add(Math.random());
+
+var forEach = Array.prototype.forEach;
+// print numbers in the list
+forEach.call(list, function(x) print(x));
+
+// print sum of squares of the random numbers
+print("Square sum:",
+ reduce.call(
+ map.call(list, function(x) x*x),
+ function(x, y) x + y)
+);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/locales.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple program that lists available locals. This is ECMAScript
+// port of Java example by @brunoborges
+
+// Java classes used
+var Arrays = Java.type("java.util.Arrays");
+var Collectors = Java.type("java.util.stream.Collectors");
+var JString = Java.type("java.lang.String");
+var Locale = Java.type("java.util.Locale");
+
+var formatStr = "Country : %s \t\t\t\t:\t Country Code : %s";
+
+// Nashorn allows script functions to be passed
+// whereever Java8 lambdas are expected.
+
+// Nashorn also supports "expression closures" supported by
+// Mozilla JavaScript 1.8 version. See also
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/1.8
+
+// The following prints locales in (country) display name order
+var list = Arrays.asList(Locale.getISOCountries())
+ .stream()
+ .map(function(x) new Locale("", x))
+ .sorted(function(c0, c1) c0.displayCountry.compareTo(c1.displayCountry))
+ .map(function(l) JString.format(formatStr, l.displayCountry, l.country))
+ .collect(Collectors.toList());
+
+list.forEach(print);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/logisticmap.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,82 @@
+#// Usage: jjs -fx -scripting logisticmap.js -- <initial_x> <R>
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Logistic map viewer using Java8 Streams and JavaFX
+// See also http://en.wikipedia.org/wiki/Logistic_map
+
+if (!$OPTIONS._fx || arguments.length < 2) {
+ print("Usage: jjs -fx -scripting logisticmap.js -- <initial_x> <R>");
+ exit(1);
+}
+
+// parameters for the logistic map
+var x = parseFloat(arguments[0]);
+var R = parseFloat(arguments[1]);
+var NUM_POINTS = arguments.length > 2? parseFloat(arguments[2]) : 20;
+
+// Java classes used
+var DoubleStream = Java.type('java.util.stream.DoubleStream');
+var LineChart = Java.type("javafx.scene.chart.LineChart");
+var NumberAxis = Java.type("javafx.scene.chart.NumberAxis");
+var Scene = Java.type("javafx.scene.Scene");
+var Stage = Java.type("javafx.stage.Stage");
+var XYChart = Java.type("javafx.scene.chart.XYChart");
+
+function start(stage) {
+ stage.title = "Logistic Map: initial x = ${x}, R = ${R}";
+ // make chart
+ var xAxis = new NumberAxis();
+ var yAxis = new NumberAxis();
+ var lineChart = new LineChart(xAxis, yAxis);
+ xAxis.setLabel("iteration");
+ yAxis.setLabel("x");
+ // make chart data series
+ var series = new XYChart.Series();
+ var data = series.data;
+ // populate data using logistic iteration
+ var i = 0;
+ DoubleStream
+ .generate(function() x = R*x*(1-x))
+ .limit(NUM_POINTS)
+ .forEach(
+ function(value) {
+ data.add(new XYChart.Data(i, value));
+ i++;
+ }
+ );
+ // add to stage
+ var scene = new Scene(lineChart, 800, 600);
+ lineChart.data.add(series);
+ stage.scene = scene;
+ stage.show();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/options.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,37 @@
+#// Usage: jjs -scripting options.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// print all option names and values
+for (i in $OPTIONS) {
+ print(i, '=', $OPTIONS[i]);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/readLine.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,38 @@
+#// Usage: jjs -scripting greeting.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// readLine prints prompt and reads user response
+var name = readLine("Your name please: ");
+
+// user name is interpolated within string
+print("Hello ${name}");
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/sam_function.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn supports passing script functions whenever
+// a SAM (single abstract method) type object is expected
+
+var System = Java.type("java.lang.System");
+var Timer = Java.type("java.util.Timer");
+var timer = new Timer();
+
+// schedule method accepts java.util.TimerTask
+// which is a single-abstract-method type. you
+// can pass a script function and nashorn will
+// wrap it as SAM implementor.
+
+timer.schedule(function() {
+ print("Hello World!");
+}, 1000);
+
+// wait for timer thread to print by
+// reading from stdin.
+print("press any key to exit after message from timer...");
+System.in.read();
--- a/nashorn/samples/shell.js Wed May 07 14:07:19 2014 +0530
+++ b/nashorn/samples/shell.js Wed May 07 20:20:58 2014 +0530
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -29,50 +29,53 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/**
- * This is a simple shell tool in JavaScript.
+// Usage: jjs shell.js
+
+/* This is a simple shell tool in JavaScript.
*
* Runs any operating system command using Java "exec". When "eval" command is
* used, evaluates argument(s) as JavaScript code.
*/
-var imports = new JavaImporter(java.io, java.lang, java.util);
-
-function prompt() {
- java.lang.System.out.print(">");
-}
+(function() {
+ // Java classes used
+ var Arrays = Java.type("java.util.Arrays");
+ var BufferedReader = Java.type("java.io.BufferedReader");
+ var InputStreamReader = Java.type("java.io.InputStreamReader");
+ var ProcessBuilder = Java.type("java.lang.ProcessBuilder");
+ var System = Java.type("java.lang.System");
-with (imports) {
- var reader = new BufferedReader(new InputStreamReader(System["in"]));
- var line = null;
+ // print prompt
+ function prompt() {
+ System.out.print("> ");
+ }
+
+ var reader = new BufferedReader(new InputStreamReader(System.in));
prompt();
- while ((line = reader.readLine()) != null) {
- if (line != "") {
- var args = line.split(" ");
+ // read and evaluate each line from stdin
+ reader.lines().forEach(function(line) {
+ if (! line.isEmpty()) {
+ var args = line.split(' ');
try {
- if (args[0] == "eval") {
- var code = line.substring("eval".length);
+ // special 'eval' command to evaluate JS code
+ if (args[0] == 'eval') {
+ var code = line.substring('eval'.length);
var res = eval(code);
if (res != undefined) {
print(res);
}
} else {
- var argList = new ArrayList();
- for (i in args) { argList.add(args[i]); }
- var procBuilder = new ProcessBuilder(argList);
- procBuilder.redirectErrorStream();
- var proc = procBuilder.start();
- var out = new BufferedReader(new InputStreamReader(proc.getInputStream()));
- var line = null;
- while ((line = out.readLine()) != null) {
- System.out.println(line);
- }
- proc.waitFor();
+ // build child process and start it!
+ new ProcessBuilder(Arrays.asList(args))
+ .inheritIO()
+ .start()
+ .waitFor();
}
} catch (e) {
+ // print exception, if any
print(e);
}
}
prompt();
- }
-}
+ })
+})()
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/stack.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nashorn supports 'stack' property on ECMAScript
+// error objects. This property's value is a string
+// that shows script stack trace.
+
+function g() {
+ throw new Error("wrong");
+}
+
+function f() {
+ g();
+}
+
+// Output looks something like:
+//
+// Error: wrong
+// at g (stack.js:37)
+// at f (stack.js:41)
+// at <program> (stack.js:52)
+
+try {
+ f();
+} catch (e) {
+ print(e.stack);
+}
--- a/nashorn/samples/test.js Wed May 07 14:07:19 2014 +0530
+++ b/nashorn/samples/test.js Wed May 07 20:20:58 2014 +0530
@@ -30,4 +30,3 @@
*/
print("Hello World");
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/uniform_random.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// generate/print 100 uniformly distributed random values
+// and print summary statistics on it
+
+var DoubleStream = Java.type("java.util.stream.DoubleStream");
+
+// pass script function when a lambda is required
+// Math.random passed here for double generator lambda
+// print passed to forEach method
+
+DoubleStream
+ .generate(Math.random)
+ .limit(100)
+ .forEach(print);
+
+print(DoubleStream
+ .generate(Math.random)
+ .limit(100)
+ .summaryStatistics());
--- a/nashorn/samples/uniq.js Wed May 07 14:07:19 2014 +0530
+++ b/nashorn/samples/uniq.js Wed May 07 20:20:58 2014 +0530
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -29,27 +29,28 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/**
- * Prints unique lines from a given file.
- */
+// Usage: jjs uniq.js
+// or: jjs uniq.js -- <file>
+
+// omit repeated lines and print unique lines
-if (arguments.length != 1) {
- print("Usage: jjs uniq.js -- <file>");
- java.lang.System.exit(1);
-}
+var BufferedReader = Java.type("java.io.BufferedReader");
+var FileReader = Java.type("java.io.FileReader");
+var InputStreamReader = Java.type("java.io.InputStreamReader");
+var System = Java.type("java.lang.System");
-var imports = new JavaImporter(java.io);
-
+// use object as set - but insertion order preserved
var uniqueLines = {};
-with (imports) {
- var reader = new BufferedReader(new FileReader(arguments[0]));
- while ((line = reader.readLine()) != null) {
- // using a JS object as a map...
- uniqueLines[line] = true;
- }
+var reader = arguments.length > 0 ?
+ new FileReader(arguments[0]) :
+ new InputStreamReader(System.in);
+reader = new BufferedReader(reader);
+
+// add unique lines
+reader.lines().forEach(function(line) {
+ uniqueLines[line] = true;
+})
+
+for (line in uniqueLines) {
+ print(line);
}
-
-// now print the collected lines
-for (i in uniqueLines) {
- print(i);
-}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/uniqs.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Usage: jjs uniqs.js -- <file>
+// omit repeated lines and print unique lines
+// But this version uses Stream API
+
+if (arguments.length < 1) {
+ print("Usage: jjs uniqs.js -- <file>");
+ exit(1);
+}
+
+var Files = Java.type("java.nio.file.Files");
+var FileSystems = Java.type("java.nio.file.FileSystems");
+print('Unique lines:',
+ Files
+ .lines(FileSystems.default.getPath(arguments[0]))
+ .distinct()
+ .peek(print)
+ .count());
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/weather.js Wed May 07 20:20:58 2014 +0530
@@ -0,0 +1,63 @@
+#// usage: jjs -scripting weather.js
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Simple nashorn example showing back-quote exec process,
+// JSON and Java8 streams
+
+var Arrays = Java.type("java.util.Arrays");
+
+// use curl to download JSON weather data from the net
+// use backquote -scripting mode syntax to exec a process
+
+`curl http://api.openweathermap.org/data/2.5/forecast/daily?q=Chennai&mode=json&units=metric&cnt=7`;
+
+// parse JSON
+var weather = JSON.parse($OUT);
+
+// pull out humidity as array
+var humidity = weather.list.map(function(curVal) {
+ return curVal.humidity;
+})
+
+// Stream API to print stat
+print("Humidity");
+print(Arrays["stream(int[])"](humidity).summaryStatistics());
+
+// pull maximum day time temperature
+var temp = weather.list.map(function(curVal) {
+ return curVal.temp.max;
+});
+
+// Stream API to print stat
+print("Max Temperature");
+print(Arrays["stream(double[])"](temp).summaryStatistics());