static void nashornCompiledScript(String code) throws ScriptException, NoSuchMethodException {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("nashorn");
CompiledScript compiled = ((Compilable) engine).compile(code);
Object result = null;
ScriptContext context = new SimpleScriptContext();
Bindings engineScope = context.getBindings(ScriptContext.ENGINE_SCOPE);
long total = 0;
for (int i = 0; i < RUNS; ++i) {
long start = System.nanoTime();
for (int j = 0; j < BATCH; ++j) {
engineScope.put("value", "12345678");
result = compiled.eval(context);
}
long stop = System.nanoTime();
System.out.println(
"Run "
+ (i * BATCH + 1)
+ "-"
+ ((i + 1) * BATCH)
+ ": "
+ Math.round((stop - start) / BATCH / 1000)
+ " us");
total += (stop - start);
}
System.out.println("Average run: " + Math.round(total / RUNS / BATCH / 1000) + " us");
System.out.println(
"Data is " + ((Invocable) engine).invokeMethod(result, "toString").toString());
}
public static void main(String[] args) {
// Script Engine instantiation using ServiceProvider - this will
// look in the classpath for a file
// /META-INF/services/javax.script.ScriptEngineFactory
// where the AbclScriptEngineFactory is registered
ScriptEngine lispEngine = new ScriptEngineManager().getEngineByExtension("lisp");
// Alternatively, you can directly instantiate the script engine:
// ScriptEngineManager scriptManager = new ScriptEngineManager();
// scriptManager.registerEngineExtension("lisp", new AbclScriptEngineFactory());
// ScriptEngine lispEngine = scriptManager.getEngineByExtension("lisp");
// (thanks to Peter Tsenter for suggesting this)
// Accessing variables
System.out.println();
System.out.println("*package* = " + lispEngine.get("*package*"));
Object someValue = new Object();
lispEngine.put("someVariable", someValue);
System.out.println("someVariable = " + lispEngine.get("someVariable"));
try {
// Interpretation (also from streams)
lispEngine.eval("(defun hello (arg) (print (list arg someVariable)) (terpri))");
// Direct function invocation
((Invocable) lispEngine).invokeFunction("hello", "world");
// Implementing a Java interface in Lisp
lispEngine.eval("(defun compare-to (&rest args) 42)");
Comparable c = ((Invocable) lispEngine).getInterface(java.lang.Comparable.class);
System.out.println("compareTo: " + c.compareTo(null));
// Compilation!
lispEngine.eval(
"(defmacro slow-compiling-macro (arg) (dotimes (i 1000000) (incf i)) `(print ,arg))");
long millis = System.currentTimeMillis();
lispEngine.eval("(slow-compiling-macro 42)");
millis = System.currentTimeMillis() - millis;
System.out.println("interpretation took " + millis);
millis = System.currentTimeMillis();
CompiledScript cs = ((Compilable) lispEngine).compile("(slow-compiling-macro 42)");
millis = System.currentTimeMillis() - millis;
System.out.println("compilation took " + millis);
millis = System.currentTimeMillis();
cs.eval();
millis = System.currentTimeMillis() - millis;
System.out.println("evaluation took " + millis);
millis = System.currentTimeMillis();
cs.eval();
millis = System.currentTimeMillis() - millis;
System.out.println("evaluation took " + millis);
// Ecc. ecc.
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (ScriptException e) {
e.printStackTrace();
}
}
@Test
public void shouldCompileScript() throws Exception {
final GremlinExecutor gremlinExecutor = GremlinExecutor.build().create();
final CompiledScript script = gremlinExecutor.compile("1+1").get();
assertEquals(2, script.eval());
gremlinExecutor.close();
}
/** Test of compile method, of class Jsr223JRubyEngine. */
@Test
public void testCompile_Reader() throws Exception {
logger1.info("[compile reader]");
ScriptEngine instance;
synchronized (this) {
System.setProperty("org.jruby.embed.localcontext.scope", "singlethread");
System.setProperty("org.jruby.embed.localvariable.behavior", "transient");
ScriptEngineManager manager = new ScriptEngineManager();
instance = manager.getEngineByName("jruby");
}
String filename = basedir + "/src/test/ruby/org/jruby/embed/ruby/proverbs_of_the_day.rb";
Reader reader = new FileReader(filename);
instance.put("$day", -1);
CompiledScript cs = ((Compilable) instance).compile(reader);
String result = (String) cs.eval();
String expResult = "A rolling stone gathers no moss.";
assertEquals(expResult, result);
result = (String) cs.eval();
expResult = "A friend in need is a friend indeed.";
assertEquals(expResult, result);
result = (String) cs.eval();
expResult = "Every garden may have some weeds.";
assertEquals(expResult, result);
instance.getBindings(ScriptContext.ENGINE_SCOPE).clear();
instance = null;
}
/** Test of compile method, of class Jsr223JRubyEngine. */
@Test
public void testCompile_String() throws Exception {
logger1.info("[compile string]");
ScriptEngine instance;
synchronized (this) {
System.setProperty("org.jruby.embed.localcontext.scope", "singlethread");
System.setProperty("org.jruby.embed.localvariable.behavior", "global");
ScriptEngineManager manager = new ScriptEngineManager();
instance = manager.getEngineByName("jruby");
}
String script =
"def norman_window(x, y)\n"
+ "return get_area(x, y), get_perimeter(x, y)\n"
+ "end\n"
+ "def get_area(x, y)\n"
+ "x * y + Math::PI / 8.0 * x ** 2.0\n"
+ "end\n"
+ "def get_perimeter(x, y)\n"
+ "x + 2.0 * y + Math::PI / 2.0 * x\n"
+ "end\n"
+ "norman_window(2, 1)";
CompiledScript cs = ((Compilable) instance).compile(script);
List<Double> result = (List<Double>) cs.eval();
assertEquals(3.570796327, result.get(0), 0.000001);
assertEquals(7.141592654, result.get(1), 0.000001);
instance.getBindings(ScriptContext.ENGINE_SCOPE).clear();
instance = null;
}
public Object eval(ScriptEngine engine, String script, ScriptContext context)
throws ScriptException {
if (engine instanceof Compilable && Config.SCRIPT_ALLOW_COMPILATION) {
Compilable eng = (Compilable) engine;
CompiledScript cs = eng.compile(script);
return context != null ? cs.eval(context) : cs.eval();
} else return context != null ? engine.eval(script, context) : engine.eval(script);
}
@Test
public void testCompilable() throws ScriptException {
final Compilable compilableFrege = (Compilable) frege;
final CompiledScript compiled =
compilableFrege.compile("fib = 0 : 1 : zipWith (+) fib (tail fib)");
compiled.eval();
final Object actual = frege.eval("show $ take 6 fib");
final Object expected = "[0, 1, 1, 2, 3, 5]";
assertEquals(expected, actual);
}
public double[] fitfunc(double[] fitparams) {
Bindings b = engine.createBindings();
for (int i = 0; i < 10; i++) b.put("P" + (i + 1), fitparams[i]);
/*String script1="P1="+fitparams[0]+"; "+
"P2="+fitparams[1]+"; "+
"P3="+fitparams[2]+"; "+
"P4="+fitparams[3]+"; "+
"P5="+fitparams[4]+"; "+
"P6="+fitparams[5]+"; "+
"P7="+fitparams[6]+"; "+
"P8="+fitparams[7]+"; "+
"P9="+fitparams[8]+"; "+
"P10="+fitparams[9]+"; "+
exdef+"; x=";
String script2="; retval="+function+";";*/
try {
double[] temp = new double[tempx.length];
for (int i = 0; i < tempx.length; i++) {
// temp[i]=((Double)engine.eval(script1+(double)tempx[i]+script2)).doubleValue();
b.put("x", tempx[i]);
b.put("y", tempdata[i]);
temp[i] = (Double) cs.eval(b);
}
return temp;
} catch (Exception e) {
IJ.log(e.getMessage());
return null;
}
}
public void execute() {
try {
compiledScript.eval();
} catch (ScriptException e) {
onScriptError(e);
return;
}
}
@Test
public void testNashornWithCompile() throws Exception {
ScriptEngineManager engineManager = new ScriptEngineManager();
ScriptEngine engine =
engineManager.getEngineByName(AutomationScriptingConstants.NASHORN_ENGINE);
assertNotNull(engine);
Compilable compiler = (Compilable) engine;
assertNotNull(compiler);
InputStream stream = this.getClass().getResourceAsStream("/testScript" + ".js");
assertNotNull(stream);
String js = IOUtils.toString(stream);
CompiledScript compiled = compiler.compile(new StringReader(js));
engine.put("mapper", new Mapper());
compiled.eval(engine.getContext());
assertEquals(
"1"
+ System.lineSeparator()
+ "str"
+ System.lineSeparator()
+ "[1, 2, {a=1, b=2}]"
+ System.lineSeparator()
+ "{a=1, b=2}"
+ System.lineSeparator()
+ "This is a string"
+ System.lineSeparator()
+ "This is a string"
+ System.lineSeparator()
+ "2"
+ System.lineSeparator()
+ "[A, B, C]"
+ System.lineSeparator()
+ "{a=salut, b=from java}"
+ System.lineSeparator()
+ "done"
+ System.lineSeparator(),
outContent.toString());
}
public void execute(Bindings bindings) {
try {
for (String key : bindings.keySet()) {
engine.put(key, bindings.get(key));
}
compiledScript.eval();
} catch (ScriptException e) {
onScriptError(e);
return;
}
}
@Override
public List<Object> next() throws TranslatorException, DataNotAvailableException {
// create and return one row at a time for your resultset.
if (resultsIt.hasNext()) {
List<Object> r = new ArrayList<Object>(projects.size());
Object o = resultsIt.next();
sc.setAttribute(OBJECT_NAME, o, ScriptContext.ENGINE_SCOPE);
for (CompiledScript cs : this.projects) {
if (cs == null) {
r.add(o);
continue;
}
try {
r.add(cs.eval(sc));
} catch (ScriptException e) {
throw new TranslatorException(e);
}
}
return r;
}
return null;
}
/**
* Perform mediation with static inline script of the given scripting language
*
* @param synCtx message context
* @return true, or the script return value
* @throws ScriptException For any errors , when compile , run the script
*/
private Object mediateForInlineScript(MessageContext synCtx) throws ScriptException {
ScriptMessageContext scriptMC = new ScriptMessageContext(synCtx, xmlHelper);
processJSONPayload(synCtx, scriptMC);
Bindings bindings = scriptEngine.createBindings();
bindings.put(MC_VAR_NAME, scriptMC);
Object response;
if (compiledScript != null) {
response = compiledScript.eval(bindings);
} else {
response = scriptEngine.eval(scriptSourceCode, bindings);
}
return response;
}
/*
Helper method called by the {@link Context} for executing script with
the bindings within the context
*/
void execute(Bindings bindings, List<CompiledScript> injectedScripts) throws ScriptException {
// First execute the head parts
for (CompiledScript script : headScripts) {
script.eval(bindings);
}
// Between the head and the body, execute the injected scripts
// The injected scripts are appended in the head element
for (CompiledScript script : injectedScripts) {
script.eval(bindings);
}
// The body scripts are executed at the end
for (CompiledScript script : bodyScripts) {
script.eval(bindings);
}
}
public void executeScript(ScriptEngine engine, File file)
throws FileNotFoundException, ScriptException {
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
if (Config.SCRIPT_DEBUG) {
_log.info("Loading Script: " + file.getAbsolutePath());
}
if (Config.SCRIPT_ERROR_LOG) {
String name = file.getAbsolutePath() + ".error.log";
File errorLog = new File(name);
if (errorLog.isFile()) {
errorLog.delete();
}
}
if (engine instanceof Compilable && Config.SCRIPT_ALLOW_COMPILATION) {
ScriptContext context = new SimpleScriptContext();
context.setAttribute(
"mainClass",
getClassForFile(file).replace('/', '.').replace('\\', '.'),
ScriptContext.ENGINE_SCOPE);
context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
JythonScriptEngine.JYTHON_ENGINE_INSTANCE, engine, ScriptContext.ENGINE_SCOPE);
setCurrentLoadingScript(file);
ScriptContext ctx = engine.getContext();
try {
engine.setContext(context);
if (Config.SCRIPT_CACHE) {
CompiledScript cs = _cache.loadCompiledScript(engine, file);
cs.eval(context);
} else {
Compilable eng = (Compilable) engine;
CompiledScript cs = eng.compile(reader);
cs.eval(context);
}
} finally {
engine.setContext(ctx);
setCurrentLoadingScript(null);
context.removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
context.removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
}
} else {
ScriptContext context = new SimpleScriptContext();
context.setAttribute(
"mainClass",
getClassForFile(file).replace('/', '.').replace('\\', '.'),
ScriptContext.ENGINE_SCOPE);
context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
setCurrentLoadingScript(file);
try {
engine.eval(reader, context);
} finally {
setCurrentLoadingScript(null);
engine.getContext().removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
engine.getContext().removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
}
}
}
