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functionf(){return1;};

print(f()+1);

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jjsfunc.js

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ScriptEngineManagermanager=newScriptEngineManager();

ScriptEngineengine=manager.getEngineByName("JavaScript");

System.out.println(engine.getClass().getName());

System.out.println("Result:"+engine.eval("functionf(){return1;};f()+1;"));

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staticvoidrhino(Stringparser,Stringcode){

Stringsource="speedtest";

intline=1;

Contextcontext=Context.enter();

context.setOptimizationLevel(9);

try{

Scriptablescope=context.initStandardObjects();

context.evaluateString(scope,parser,source,line,null);

ScriptableObject.putProperty(scope,"$code",Context.javaToJS(code,scope));

Objecttree=newObject();

Objecttokens=newObject();

for(inti=0;i<RUNS;++i){

longstart=System.nanoTime();

tree=context.evaluateString(scope,"esprima.parse($code)",source,line,null);

tokens=context.evaluateString(scope,"esprima.tokenize($code)",source,line,null);

longstop=System.nanoTime();

System.out.println("Run#"+(i+1)+":"+Math.round((stop-start)/1e6)+"ms");

}

}finally{

Context.exit();

System.gc();

}

}

staticvoidnashorn(Stringparser,Stringcode)throwsScriptException,NoSuchMethodException{

ScriptEngineManagerfactory=newScriptEngineManager();

ScriptEngineengine=factory.getEngineByName("nashorn");

engine.eval(parser);

Invocableinv=(Invocable)engine;

Objectesprima=engine.get("esprima");

Objecttree=newObject();

Objecttokens=newObject();

for(inti=0;i<RUNS;++i){

longstart=System.nanoTime();

tree=inv.invokeMethod(esprima,"parse",code);

tokens=inv.invokeMethod(esprima,"tokenize",code);

longstop=System.nanoTime();

System.out.println("Run#"+(i+1)+":"+Math.round((stop-start)/1e6)+"ms");

}

//System.out.println("Datais"+tokens.toString()+"and"+tree.toString());

}