Example usage for jdk.nashorn.internal.runtime ScriptRuntime UNDEFINED

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In this page you can find the example usage for jdk.nashorn.internal.runtime ScriptRuntime UNDEFINED.

Prototype

Undefined UNDEFINED

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Unique instance of undefined.

Usage

From source file:io.stallion.plugins.javascript.JavascriptShell.java

License:Open Source License

private static int readEvalPrint(InputStream input, OutputStream out, Context context, Global global)
        throws IOException, ScriptException {
    JsPluginSettings pluginSettings = new JsPluginSettings();

    //context.eval(global, "");

    //Global global = context.createGlobal();
    //ScriptEnvironment env = context.getEnv();

    String prompt = bundle.getString("shell.prompt");
    //BufferedReader in = new BufferedReader(new InputStreamReader(input));
    ConsoleReader in = new ConsoleReader();
    PrintWriter err = context.getErr();
    Global oldGlobal = Context.getGlobal();
    boolean globalChanged = oldGlobal != global;
    ScriptEnvironment env = context.getEnv();

    if (DB.available()) {
        global.put("DB", DB.instance(), false);
    }/*from  w  ww .j  a va 2  s  .  c o m*/

    try {
        if (globalChanged) {
            Context.setGlobal(global);
        }

        global.addShellBuiltins();

        // Load builtins
        global.put("javaToJsHelpers", new JavaToJsHelpers(Sandbox.allPermissions()), true);
        SandboxedContext ctx = new SandboxedContext(Settings.instance().getTargetFolder() + "/js",
                Sandbox.allPermissions(), pluginSettings);
        global.put("myContext", ctx, true);

        String stallionSharedJs = IOUtils
                .toString(JavascriptShell.class.getResource("/jslib/stallion_shared.js"), UTF8);
        context.eval(global,
                "load(" + JSON.stringify(
                        map(val("script", stallionSharedJs), val("name", "stallion_shared.js"))) + ");",
                global, "<shellboot>");
        global.put("stallionClassLoader", new UnrestrictedJsClassLoader(), true);

        while (true) {
            String source;
            do {
                //err.print(prompt);
                //err.flush();
                source = "";

                try {
                    source = in.readLine(prompt);
                } catch (IOException var14) {
                    err.println(var14.toString());
                }

                if (source == null) {
                    return 0;
                }
            } while (source.isEmpty());

            try {
                Object e = context.eval(global, source, global, "<shell>");
                if (e != ScriptRuntime.UNDEFINED) {
                    err.println(JSType.toString(e));
                }
            } catch (Exception var15) {
                err.println(var15);
                if (env._dump_on_error) {
                    var15.printStackTrace(err);
                }
            }
        }
    } finally {
        if (globalChanged) {
            Context.setGlobal(oldGlobal);
        }

    }
}

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From source file:org.kihara.util.JavascriptEngine.java

License:Open Source License

/**
 * read-eval-print loop for Nashorn shell.
 *
 * @param context the nashorn context/*from   ww  w  . j a v a  2s. c  om*/
 * @param global  global scope object to use
 * @return return code
 */
@SuppressWarnings("resource")
private static int readEvalPrint(final Context context, final ScriptObject global) {
    final String prompt = "> ";//bundle.getString("shell.prompt");
    final BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    final PrintWriter err = context.getErr();
    final ScriptObject oldGlobal = Context.getGlobal();
    final boolean globalChanged = (oldGlobal != global);
    final ScriptEnvironment env = context.getEnv();

    try {
        if (globalChanged) {
            Context.setGlobal(global);
        }

        // initialize with "shell.js" script
        try {
            final Source source = Source.sourceFor("<shell.js>", JavascriptEngine.SHELL_INIT_JS);
            context.eval(global, source.getString(), global, "<shell.js>", false, false);

            // custom scripts
            context.eval(global, script.get(), global, "<shell.js>", false, false);
        } catch (final Exception e) {
            err.println(e);
            if (env._dump_on_error) {
                e.printStackTrace(err);
            }

            return INTERNAL_ERROR;
        }

        while (true) {
            err.print(prompt);
            err.flush();

            String source = "";
            try {
                source = in.readLine();
            } catch (final IOException ioe) {
                err.println(ioe.toString());
            }

            if (source == null) {
                break;
            }

            if (source.isEmpty()) {
                continue;
            }

            Object res;
            try {
                res = context.eval(global, source, global, "<shell>", env._strict, false);
            } catch (final Exception e) {
                err.println(e);
                if (env._dump_on_error) {
                    e.printStackTrace(err);
                }
                continue;
            }

            if (res != ScriptRuntime.UNDEFINED) {
                err.println(JSType.toString(res));
            }
        }
    } finally {
        if (globalChanged) {
            Context.setGlobal(global);
        }
    }

    return SUCCESS;
}

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From source file:z.zee.Z.java

License:Open Source License

/**
 * read-eval-print loop for Nashorn shell.
 *
 * @param context the nashorn context/*  w ww.j  av  a2 s .c om*/
 * @param global  global scope object to use
 * @return return code
 */
@SuppressWarnings("resource")
private static int readEvalPrint(final Context context, final ScriptObject global) {
    final String prompt = bundle.getString("shell.prompt");
    final BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    final PrintWriter err = context.getErr();
    final ScriptObject oldGlobal = Context.getGlobal();
    final boolean globalChanged = (oldGlobal != global);
    final ScriptEnvironment env = context.getEnv();

    try {
        if (globalChanged) {
            Context.setGlobal(global);
        }

        // initialize with "z.js" script
        try {
            final Source source = new Source("<z.js>", Z.class.getResource("resources/z.js"));
            context.eval(global, source.getString(), global, "<z.js>", false);
        } catch (final Exception e) {
            err.println(e);
            if (env._dump_on_error) {
                e.printStackTrace(err);
            }

            return INTERNAL_ERROR;
        }

        while (true) {
            err.print(prompt);
            err.flush();

            String source = "";
            try {
                source = in.readLine();
            } catch (final IOException ioe) {
                err.println(ioe.toString());
            }

            if (source == null) {
                break;
            }

            Object res;
            try {
                res = context.eval(global, source, global, "<shell>", env._strict);
            } catch (final Exception e) {
                err.println(e);
                if (env._dump_on_error) {
                    e.printStackTrace(err);
                }
                continue;
            }

            if (res != null && res != ScriptRuntime.UNDEFINED) {
                err.println(ScriptRuntime.safeToString(res));
            }
        }
    } finally {
        if (globalChanged) {
            Context.setGlobal(global);
        }
    }

    return SUCCESS;
}

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