Example usage for jdk.nashorn.internal.runtime Source getString

Introduction

In this page you can find the example usage for jdk.nashorn.internal.runtime Source getString.

Prototype

public String getString() 

Source Link

Document

Fetch source content.

Usage

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

License:Open Source License

/**
 * read-eval-print loop for Nashorn shell.
 *
 * @param context the nashorn context//  w  w  w. j av a  2s  .  co  m
 * @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/*from  w  w  w  .j  a  v  a2s  . com*/
 * @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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