Add a ScriptEngine adapter

This is similar to the AdaptedScriptLanguage, but for ScriptEngine.
It will be used shortly by the scijava/scripting-scala project.

Author: ctrueden

pom.xml

@@ -10,7 +10,7 @@
 	</parent>
 
 	<artifactId>scijava-common</artifactId>
-	<version>2.54.1-SNAPSHOT</version>
+	<version>2.55.0-SNAPSHOT</version>
 
 	<name>SciJava Common</name>
 	<description>SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by both ImageJ and SCIFIO.</description>

src/main/java/org/scijava/script/AdaptedScriptEngine.java

@@ -0,0 +1,140 @@
+/*
+ * #%L
+ * SciJava Common shared library for SciJava software.
+ * %%
+ * Copyright (C) 2009 - 2016 Board of Regents of the University of
+ * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
+ * Institute of Molecular Cell Biology and Genetics.
+ * %%
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 
+ * 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 HOLDERS 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.
+ * #L%
+ */
+
+package org.scijava.script;
+
+import java.io.Reader;
+
+import javax.script.Bindings;
+import javax.script.ScriptContext;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineFactory;
+import javax.script.ScriptException;
+
+/**
+ * Abstract superclass for {@link ScriptEngine} implementations which adapt an
+ * existing {@link ScriptEngine}.
+ * <p>
+ * This is useful for situations where a JSR-223-compliant script engine has
+ * been provided, but whose behavior we need to extend or tweak.
+ * </p>
+ *
+ * @author Curtis Rueden
+ */
+public class AdaptedScriptEngine implements ScriptEngine {
+
+	private final ScriptEngine engine;
+
+	public AdaptedScriptEngine(final ScriptEngine engine) {
+		this.engine = engine;
+	}
+
+	// -- ScriptEngine methods --
+
+	@Override
+	public Object eval(final String script, final ScriptContext context)
+		throws ScriptException
+	{
+		return engine.eval(script, context);
+	}
+
+	@Override
+	public Object eval(final Reader reader, final ScriptContext context)
+		throws ScriptException
+	{
+		return engine.eval(reader, context);
+	}
+
+	@Override
+	public Object eval(final String script) throws ScriptException {
+		return engine.eval(script);
+	}
+
+	@Override
+	public Object eval(final Reader reader) throws ScriptException {
+		return engine.eval(reader);
+	}
+
+	@Override
+	public Object eval(final String script, final Bindings n)
+		throws ScriptException
+	{
+		return engine.eval(script, n);
+	}
+
+	@Override
+	public Object eval(final Reader reader, final Bindings n)
+		throws ScriptException
+	{
+		return engine.eval(reader, n);
+	}
+
+	@Override
+	public void put(final String key, final Object value) {
+		engine.put(key, value);
+	}
+
+	@Override
+	public Object get(final String key) {
+		return engine.get(key);
+	}
+
+	@Override
+	public Bindings getBindings(final int scope) {
+		return engine.getBindings(scope);
+	}
+
+	@Override
+	public void setBindings(final Bindings bindings, final int scope) {
+		engine.setBindings(bindings, scope);
+	}
+
+	@Override
+	public Bindings createBindings() {
+		return engine.createBindings();
+	}
+
+	@Override
+	public ScriptContext getContext() {
+		return engine.getContext();
+	}
+
+	@Override
+	public void setContext(final ScriptContext context) {
+		engine.setContext(context);
+	}
+
+	@Override
+	public ScriptEngineFactory getFactory() {
+		return engine.getFactory();
+	}
+
+}