jdk8-mips64-public/nashorn: samples/console.js@2f1b9f4daec1 (annotated)

samples/console.js@2f1b9f4daec1 (annotated)

samples/console.js

Fri, 05 Jun 2015 12:38:53 +0200

author: mhaupt
date: Fri, 05 Jun 2015 12:38:53 +0200
changeset 1398: 2f1b9f4daec1
parent 1373: 4eabcac368d2
permissions: -rw-r--r--

8080087: Nashorn $ENV.PWD is originally undefined
Summary: On Windows, the PWD environment variable does not exist and cannot be imported in scripting mode, so it is set explicitly.
Reviewed-by: lagergren, sundar

 /*
  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  *   - Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  *
  *   - Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  *   - Neither the name of Oracle nor the names of its
  *     contributors may be used to endorse or promote products derived
  *     from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 /**
  * Simple Web Console-like support for Nashorn. In addition to
  * Web console object methods, this console add methods of
  * java.io.Console as well. Note:not all web console methods are
  * implemented but useful subset is implemented.
  *
  * See also: https://developer.mozilla.org/en/docs/Web/API/console
  */
 if (typeof console == 'undefined') {
 (function() {
     var LocalDateTime = Java.type("java.time.LocalDateTime");
     var System = Java.type("java.lang.System");
     var jconsole = System.console();
     // add a new global variable called "console"
     this.console = {
     };
     function addConsoleMethods() {
         // expose methods of java.io.Console as an extension
         var placeholder = "-*-";
         // put a placeholder for each name from java.lang.Object
         var objMethods = Object.bindProperties({}, new java.lang.Object());
         for (var m in objMethods) {
             console[m] = placeholder;
         }
         // bind only the methods of java.io.Console
         // This bind will skip java.lang.Object methods as console
         // has properties of same name.
         Object.bindProperties(console, jconsole);
         // Now, delete java.lang.Object methods
         for (var m in console) {
             if (console[m] == placeholder) {
                 delete console[m];
             }
         }
     }
     addConsoleMethods();
     function consoleLog(type, msg) {
         // print type of message, then time.
         jconsole.format("%s [%s] ", type, LocalDateTime.now().toString());
         if (typeof msg == 'string') {
             jconsole.format(msg + "\n", Array.prototype.slice.call(arguments, 2));
         } else {
             // simple space separated values and newline at the end
             var arr = Array.prototype.slice.call(arguments, 1);
             jconsole.format("%s\n", arr.join(" "));
         }
     }
     console.toString = function() "[object Console]";
     // web console functions
     console.assert = function(expr) {
         if (! expr) {
             arguments[0] = "Assertion Failed:";
             consoleLog.apply(console, arguments);
             // now, stack trace at the end
             jconsole.format("%s\n", new Error().stack);
         }
     };
     // dummy clear to avoid error!
     console.clear = function() {};
     var counter = {
         get: function(label) {
             if (! this[label]) {
                 return this[label] = 1;
             } else {
                 return ++this[label];
             }
         }
     };
     // counter
     console.count = function(label) {
         label = label? String(label) : "<no label>";
         jconsole.format("%s: %d\n",label, counter.get(label).intValue());
     }
     // logging
     console.error = consoleLog.bind(jconsole, "ERROR");
     console.info = consoleLog.bind(jconsole, "INFO");
     console.log = console.info;
     console.debug = console.log;
     console.warn = consoleLog.bind(jconsole, "WARNING");
     // print stack trace
     console.trace = function() {
         jconsole.format("%s\n", new Error().stack);
     };
 })();
 }