Example usage for jdk.nashorn.api.scripting NashornScriptEngineFactory getEngineVersion

Introduction

In this page you can find the example usage for jdk.nashorn.api.scripting NashornScriptEngineFactory getEngineVersion.

Prototype

@Override
    public String getEngineVersion() 

Source Link

Usage

From source file:net.codestory.http.compilers.NashornCompiler.java

License:Apache License

private NashornCompiler(String script) {
    NashornScriptEngineFactory factory = new NashornScriptEngineFactory();

    String engineVersion = factory.getEngineVersion();
    String cacheLocation = Paths
            .get(System.getProperty("user.home"), ".code-story", "nashorn_code_cache_" + engineVersion).toFile()
            .getAbsolutePath();/*from   w  ww .ja v  a2 s  .com*/
    System.setProperty("nashorn.persistent.code.cache", cacheLocation);

    // --optimistic-types=true in JDK 8u40 slows down everything
    // Don't use varargs because it was introduced only in 8u40
    ScriptEngine nashorn = factory
            .getScriptEngine(new String[] { "--persistent-code-cache=true", "--lazy-compilation=false" });

    try {
        compiledScript = ((Compilable) nashorn).compile(script);
        bindings = nashorn.getBindings(ENGINE_SCOPE);
    } catch (ScriptException e) {
        throw new IllegalStateException("Unable to compile javascript", e);
    }
}

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