stefanhaustein / minijoe Goto Github PK

1. Simple Javascript used to print given string length:
===========
var text = "hello";
var txtlen = text.length;
document.write(txtlen);
===========

What is the expected output? What do you see instead?
1. Expected output should be 5.
2. Actual result is 9. [ basically, it initialized obj with "undefined" and  
always return "undefined" length as 9.

What version of the product are you using? On what operating system?
1. initial version 1.0 from SVN.

Please provide any additional information below.

What steps will reproduce the problem?

The expected output, is that star.png shows in the upper-lefthand corner of
the canvas.  Instead, I get an exception.  Exception included below.  The
same javascript code works fine in a browser.


What version of the product are you using? On what operating system?

   [wtkrun] java.lang.NullPointerException
   [wtkrun]     at com.google.minijoe.sys.JsFunction.eval(+2248)
   [wtkrun]     at com.google.minijoe.sys.JsFunction.exec(+70)
   [wtkrun]     at com.google.minijoe.samples.runtime.MjRuntime.commandAction(+89)
   [wtkrun]     at javax.microedition.lcdui.List.callKeyPressed(+80)
   [wtkrun]     at javax.microedition.lcdui.Display$DisplayAccessor.keyEvent(+198)
   [wtkrun]     at
javax.microedition.lcdui.Display$DisplayManagerImpl.keyEvent(+11)
   [wtkrun]     at com.sun.midp.lcdui.DefaultEventHandler.keyEvent(+127)
   [wtkrun]     at com.sun.midp.lcdui.AutomatedEventHandler.keyEvent(+210)
   [wtkrun]     at
com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.handleVmEvent(+114)
   [wtkrun]     at
com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(+57)
   [wtkrun] com.google.minijoe.sys.JsException: Error at line 3 (pc:0x21):
ReferenceError: java.lang.NullPointerException
   [wtkrun]     at com.google.minijoe.sys.JsFunction.eval(+3009)
   [wtkrun]     at com.google.minijoe.sys.JsFunction.exec(+70)
   [wtkrun]     at com.google.minijoe.samples.runtime.MjRuntime.commandAction(+89)
   [wtkrun]     at javax.microedition.lcdui.List.callKeyPressed(+80)
   [wtkrun]     at javax.microedition.lcdui.Display$DisplayAccessor.keyEvent(+198)
   [wtkrun]     at
javax.microedition.lcdui.Display$DisplayManagerImpl.keyEvent(+11)
   [wtkrun]     at com.sun.midp.lcdui.DefaultEventHandler.keyEvent(+127)
   [wtkrun]     at com.sun.midp.lcdui.AutomatedEventHandler.keyEvent(+210)
   [wtkrun]     at
com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.handleVmEvent(+114)
   [wtkrun]     at
com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(+57)

There's a typo in JsDate.java when declaring the prototype for
"toTimeString." The prototype declares the method as "toTimeSring" (missing
't').

JavaScript date.toString() should return a date/time string in local time
and not UTC. The bug is in JsDate.toString(), which should call the other
toString method with the "utc" parameter set to false.

public Element getChildById(String id) {
     int childCount = this.getChildCount();
      Element currChild = null;
      for (int i=0; i < childCount; i++) {
          if (this.getChildType(i) == this.ELEMENT) {
              currChild = this.getElement(i);             
              if (currChild != null && 
                      id.equals(currChild.getAttributeValue("id"))
                      ) {
                  break;
              } else if (currChild.getChildCount() > 0) {
                  currChild.getChildById(id);
              }               
          }
      }
      return currChild;
  }

Above is the current implementation. If there is no child element with the 
specified id, the function will traverse through and return the last child. Am 
I right?

What steps will reproduce the problem?
1. Run the following script:

works();
fails();

function fails() {
    var mychars = new Array("a","b");   
    var x;
    for (x in mychars) {
        print("x:"+x);
    }
}

function works() {
    var mychars = new Array("a","b");   
    //var x;                          <----- local variable commented
    for (x in mychars) {
        print("x:"+x);
    }
}

What is the expected output? What do you see instead?
Both For...In statements should produce valid print results.

works() emits:
x:0
x:1

fails() emits:
x:java.util.Vector$1@1ffb8dc
x:java.util.Vector$1@1ffb8dc

What version of the product are you using? On what operating system?
minijoe-1.0.zip
Windows XP

Please provide any additional information below.

What steps will reproduce the problem?
Try to execute the script code as below:
  var array = new Array();
  array.push("a");
  array.push("b");
  var len = array.length;

What is the expected output? What do you see instead?
The value of "len" must be 2,but actually it is 6.

What version of the product are you using? On what operating system?
1.0, windows xp sp2

Please provide any additional information below.

[deleted issue]

The method date.getTimezoneOffset returns a value in milliseconds from the
call TimeZone.getDefault().getOffset(). That value should be converted to
minutes, which is the expected unit in the JavaScript API. The problem is
in the JsDate.evalNative() method, case ID_GET_TIMEZONE_OFFSET.

What steps will reproduce the problem?
1. In JavaScript use a try/catch around the entire code in a file
2. compile

What is the expected output? What do you see instead?

Any errors through should be caught.

What version of the product are you using? On what operating system?

Minijoe v1.0 + Windoze X-peeper

Please provide any additional information below.

CODE:

try {
  .... any code here
} catch (e) {
  print(e);
}

STACKTRACE:

com.google.minijoe.compiler.CompilerException: Unresolved Jump Label:
finally=481523300 at line: 0
    at
com.google.minijoe.compiler.visitor.CodeGenerationVisitor.writeCodeBlock(+126)
    at com.google.minijoe.compiler.visitor.CodeGenerationVisitor.visit(+90)
    at com.google.minijoe.compiler.Eval.compile(+61)
    at net.xxx.j2me.xxx.xxxEnvironment.compile(+82)
    at net.xxx.j2me.xxx.xxxEnvironment.runScript(+4)
    at net.xxx.j2me.xxx.xxxEnvironment.<init>(+467)
    at net.xxx.j2me.xxx.xxx.startApp(+116)
    at javax.microedition.midlet.MIDletProxy.startApp(+7)
    at com.sun.midp.midlet.Scheduler.schedule(+270)
    at com.sun.midp.main.Main.runLocalClass(+28)
    at com.sun.midp.main.Main.main(+80)

** package/product names and domain changed for privacy.

I found this bug on JsObject method evalNative line 874.

stack.setInt(sp, stack.getString(sp).length());

stack is empty. I solved it by replace this line by:

stack.setInt(sp, ((String)this.value).length());

What steps will reproduce the problem?
1. eg. Given the following two statements both will print but only the
second should print. 
    if ('a' >= 'b') { print(">="); }
    if ('a' <= 'b') { print("<="); }
2.  < and > comparisons are also incorrect.
3.

What is the expected output? What do you see instead?
I expect 'a' to be <= to 'b' and not >=.

What version of the product are you using? On what operating system?
minijoe-1.0.zip Windows XP.

Please provide any additional information below.

What steps will reproduce the problem?
1. 'LOWER'.toLowerCase() 
2.
3.

What is the expected output? What do you see instead?
expected:lower
actual:tolowercase

What version of the product are you using? On what operating system?
JsObject R41

Please provide any additional information below.
I think it should be:
  stack.setObject(sp, stack.getString(sp).toLowerCase());
Was changed to:
  stack.setObject(sp, stack.getString(sp + 2).toLowerCase());
Same for toUppercase.

[deleted issue]

Not quite an issue, but, is HTML Canvas support planned?

Can we add support, and if so, what's the preferred Graphics API?
... and that being said, would the rasterization be done entirely
in minijoe, not using a parent API.

I'd imagine we'd want to use a parent API, as compiling to an API would
likely target native hardware on a device.

What steps will reproduce the problem?
1.
var times = [];
times[0] = 5;
times[1] = 8;
times[2] = 15;
print("times.length " + times.length) ;

> displays : "times.length 1"

What is the expected output? What do you see instead?
displays : "times.length 3"

What version of the product are you using? On what operating system?
Minijoe-1.0.zip, same behaviour with latest svn version.

Please provide any additional information below.

What steps will reproduce the problem?
1. Open /javascript/canvasoids.html from Chrome
2. Go to developer tools/Java Script console
3. Open "Scripts" and error would show

What is the expected output? What do you see instead?
At line #63 variable "lives" is set to 0.
In lines 277,304,306,322,324 variable "lifes" is used instead.

What version of the product are you using? On what operating system?
SVN Revision 52, Windows XP

Please provide any additional information below.
Replacing all lifes->lives fixes the error.
Also, canvasoids.html has minor typing error in the <title> tag.

It is not a issues but should be an enhancement. Will minijoe plan to add
debug support? 

Fixed Typo

After a lot of confusion as to why a JsObject.getInt returned 0 all the time I 
discovered that toNumber() did not check whether the object was an integer, 
which it was ( set by addVar("name", new Integer(intval)); )

The method date.toLocaleDateString returns the time portion of the date
instead of the date portion. The bug is in the prototype declaration in
JsDate.java. That method should reference ID_TO_LOCALE_DATE_STRING instead
of ID_TO_TIME_STRING. Also, date.toLocaleTimeString should probably
reference ID_TO_LOCALE_TIME_STRING instead of ID_TO_TIME_STRING.

What steps will reproduce the problem?
1.
Run my own javascript code that have a lot of functions calls on Nokia N79
device


What is the expected output? What do you see instead?
The application should work properly but the application crashed.
I think it's stack overflow that happens in JsFunction eval function.

What version of the product are you using? On what operating system?
Everything works fine in other device and OS. Just not N79 and E55

Please provide any additional information below.

String.split doesn't work. In JsObject, the STRING_PROTOTYPE does not
define the method name and parameter count.

In the actual implementation in evalNative, there's also a bug if the
caller doesn't not specify the "limit." In that case, an empty JsArray is
returned and instead it should split the whole string.

date.toDateString returns the time portion instead of the date portion. The
bug is in the prototype in JsDate.java. The "toDateString" method should
reference ID_TO_DATE_STRING and not ID_TO_TIME_STRING.

What steps will reproduce the problem?

var canvas = document.getElementById("canvas");
var context = canvas.getContext("2d");

var y = 10;
var x = 50;


function A() {
    this.text = "Hello";
    this.drawText = function() {
        context.fillStyle='black';
        context.translate(this.x+5,this.y+15);
        context.mozTextStyle="9pt bold Verdana";
        context.mozDrawText(this.text);
        context.translate(-1 * (this.x+5),-1 * (this.y+15));
    }

}

function B() {
}
B.prototype = new A();


b = new B();
b.drawText();

What is the expected output? What do you see instead?
Hello

What version of the product are you using? On what operating system?
Code from SVN

Please provide any additional information below.
Prototyping not working within script.

What steps will reproduce the problem?
1. class: com.google.minijoe.samples.runtime.Context2D
2. Method:  static String[] split(String s, char c)
3. LineNmuber: 174
4. Version: r23

What is the expected output? What do you see instead?

input: split("0,0,0",',');
expected output: String[]{"0", "0", "0"};
actually output: String[]{"0",null,null};

What version of the product are you using? On what operating system?

minijoe:minijoe-1.0.zip
OS:windows-xp-sp3 + Java-6-u17

Please provide any additional information below.

the split() method maybe:

static String[] split(String s, char c) {
    int count = 1;
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == c) {
        count++;
      }
    }
    String[] parts = new String[count];
    int lastCut = 0;
    int n = 0;
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == c) {
        parts[n++] = s.substring(lastCut, i);
        lastCut = i + 1;
      }
    }
    parts[n] = s.substring(lastCut, s.length());
    return parts;
  }