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Migrate code from ImageJ
Migrated from: https://github.com/imagej/imagej/tree/imagej-2.0.0-beta-7.9/plugins/scripting/scripting-javascript
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‎LICENSE.txt‎

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Copyright (c) 2008 - 2014, Board of Regents of the University of
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Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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Institute of Molecular Cell Biology and Genetics.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.

‎src/main/java/org/scijava/plugins/scripting/javascript/JavaScriptScriptLanguage.java‎

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/*
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* #%L
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* JSR-223-compliant JavaScript scripting language plugin.
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* %%
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* Copyright (C) 2008 - 2014 Board of Regents of the University of
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* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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* Institute of Molecular Cell Biology and Genetics.
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* %%
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* #L%
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*/
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package org.scijava.plugins.scripting.javascript;
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import java.lang.reflect.InvocationTargetException;
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import javax.script.ScriptEngine;
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import org.scijava.log.LogService;
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import org.scijava.plugin.Parameter;
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import org.scijava.plugin.Plugin;
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import org.scijava.script.AdaptedScriptLanguage;
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import org.scijava.script.ScriptLanguage;
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import org.scijava.util.ClassUtils;
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/**
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* An adapter of the JavaScript interpreter to ImageJ's scripting interfaces.
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*
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* @author Curtis Rueden
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* @see ScriptEngine
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*/
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@Plugin(type = ScriptLanguage.class)
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public class JavaScriptScriptLanguage extends AdaptedScriptLanguage {
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@Parameter
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private LogService log;
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public JavaScriptScriptLanguage() {
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super("javascript");
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}
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@Override
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public Object decode(final Object object) {
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// NB: JavaScript objects come out of the engine wrapped as
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// JavaScript-specific objects (e.g., NativeJavaObject), which must be
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// unwrapped. Unfortunately, we don't necessarily have direct compile-time
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// access to the JavaScript Wrapper interface implemented by the
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// NativeJavaObject wrapper. But we can access it via reflection. It is
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// typically org.mozilla.javascript.Wrapper, except for Oracle's shaded
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// implementation, which is sun.org.mozilla.javascript.internal.Wrapper.
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// Either way, the package will match that of the wrapped object itself.
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if (object == null) return null;
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final Class<?> objectClass = object.getClass();
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final String packageName = objectClass.getPackage().getName();
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final Class<?> wrapperClass =
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ClassUtils.loadClass(packageName + ".Wrapper");
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if (wrapperClass == null || !wrapperClass.isAssignableFrom(objectClass)) {
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return object;
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}
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try {
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return wrapperClass.getMethod("unwrap").invoke(object);
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}
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catch (final IllegalArgumentException exc) {
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log.warn(exc);
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}
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catch (final IllegalAccessException exc) {
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log.warn(exc);
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}
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catch (final InvocationTargetException exc) {
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log.warn(exc);
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}
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catch (final NoSuchMethodException exc) {
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log.warn(exc);
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}
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return null;
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}
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@Override
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public String getLanguageName() {
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// NB: Must override, or else the name is "ECMAScript".
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return "JavaScript";
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}
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}

‎src/test/java/org/scijava/plugins/scripting/javascript/JavaScriptTest.java‎

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/*
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* #%L
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* JSR-223-compliant JavaScript scripting language plugin.
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* %%
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* Copyright (C) 2008 - 2014 Board of Regents of the University of
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* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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* Institute of Molecular Cell Biology and Genetics.
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* %%
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* #L%
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*/
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package org.scijava.plugins.scripting.javascript;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNull;
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import static org.junit.Assert.assertTrue;
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import java.io.IOException;
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import java.util.concurrent.ExecutionException;
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import javax.script.Bindings;
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import javax.script.ScriptContext;
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import javax.script.ScriptEngine;
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import javax.script.ScriptException;
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import org.junit.Test;
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import org.scijava.Context;
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import org.scijava.script.ScriptLanguage;
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import org.scijava.script.ScriptModule;
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import org.scijava.script.ScriptService;
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/**
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* JavaScript unit tests.
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*
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* @author Johannes Schindelin
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* @author Curtis Rueden
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*/
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public class JavaScriptTest {
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@Test
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public void testBasic() throws InterruptedException, ExecutionException,
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IOException, ScriptException
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{
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final Context context = new Context(ScriptService.class);
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final ScriptService scriptService = context.getService(ScriptService.class);
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final String script = "$x = 1 + 2;";
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// NB: Some JVMs return Integer, others Double. Let's be careful here.
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final ScriptModule m = scriptService.run("add.js", script, true).get();
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final Number result = (Number) m.getReturnValue();
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assertEquals(3.0, result.doubleValue(), 0.0);
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}
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@Test
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public void testLocals() throws ScriptException {
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final Context context = new Context(ScriptService.class);
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final ScriptService scriptService = context.getService(ScriptService.class);
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final ScriptLanguage language = scriptService.getLanguageByExtension("js");
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final ScriptEngine engine = language.getScriptEngine();
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assertTrue(engine.getClass().getName().endsWith(".RhinoScriptEngine"));
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engine.put("$hello", 17);
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assertEquals("17", engine.eval("$hello").toString());
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assertEquals("17", engine.get("$hello").toString());
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final Bindings bindings = engine.getBindings(ScriptContext.ENGINE_SCOPE);
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bindings.clear();
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assertNull(engine.get("$hello"));
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}
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@Test
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public void testParameters() throws InterruptedException, ExecutionException,
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IOException, ScriptException
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{
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final Context context = new Context(ScriptService.class);
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final ScriptService scriptService = context.getService(ScriptService.class);
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final String script = "" + //
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"// @ScriptService ss\n" + //
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"// @OUTPUT String language\n" + //
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"language = ss.getLanguageByName('JavaScript').getLanguageName()\n";
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final ScriptModule m = scriptService.run("hello.js", script, true).get();
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final Object actual = m.getOutput("language");
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final String expected =
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scriptService.getLanguageByName("JavaScript").getLanguageName();
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assertEquals(expected, actual);
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final Object result = m.getReturnValue();
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assertEquals(expected, result);
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}
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}

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