Subject:
Embedding the shell
Date:
Wed, 8 Sep 1999 16:01:44 -0400
From:
"Kurt Westerfeld" <kurt@westerfeld.com>
To:
"Norris Boyd" <norris@netscape.com>
Norris, please find the attached zip file containing the (minor)
modifications to the Rhino shell module that enables the shell to be
embedded in a host application.
There are two areas of change to be concerned about:
1. Any and all references to System.in/out/err have been modified to use
Main.in/out/err, which default to System.in/out/err. Methods to do a setIn,
setOut, and setErr were added. Note that in/out/err on Main were made
static public, so that the jikes compiler wouldn't complain (I had them as
static protected, but when accessed outside of the package, a warning was
issued).
2. The global and sharedGlobal static variables were made protected so
that my app can make use of them (to add extensions after an initial pass
through main()).
That's it.
I have successfully used the facility to drop a remote telnet server into
the shell interpreter, effectively giving our server a remote shell
interpreter. It's quite nice, as we have a lot of extensions to Rhino
written that blend into our server already.
PS, I am still working on the array issues, but made a lot of progress
today. I just wanted to get this stuff off my desk.
Thanks!
________________________________________________________________________
Kurt Westerfeld
Managed Object Solutions
2722 Merrilee Drive
Suite 350
Fairfax, VA 22031
Phone: 703.208.3330 x225
Fax: 703.208.3331
http://www.mosol.com
mailto:kurt@mosol.com
shell.zip
Name:
shell.zip
Type:
Zip Compressed Data (application/x-zip-compressed)
Encoding:
base64
==============================================================================
Subject:
Rhino Array Source (Fixed)
Date:
Thu, 9 Sep 1999 14:12:03 -0400
From:
"Kurt Westerfeld" <kurt@mosol.com>
To:
"Norris Boyd" <norris@netscape.com>
Attached is NativeJavaObject.java, which seems to now pass the tests supplied to me by you and Scott. Not a lot of change, but a lot of
testing and thinking was involved. <g>
PS. I also fixed a bug in reportConversionError() which was throwing an IllegalArgumentException inside of the MessageFormat class at times.
It also looks a little nicer (uses formatting from NativeJavaMethod) and closer to the C implementation.
NativeJavaObject.java
Name:
NativeJavaObject.java
Type:
Java Source File (text/java)
Encoding:
quoted-printable
Subject:
ImporterTopLevel problem
Date:
Fri, 6 Aug 1999 15:42:50 -0400
From:
"\"Howard\" Xuhua Lin" <howard@softcom.com>
To:
"Norris Boyd" <norris@netscape.com>
CC:
"Andrew Wason" <aw@softcom.com>
Hi, The following script will cause an EvaluatorException: Ambiguous import: [JavaPackage java.awt.JButton] and [JavaPackage
java.awt.Packages.javax.swing.JButton] in the js shell:
js>importPackage(java.awt);
js>importPackage(Packages.javax.swing);
js>new JButton();.
The current JS shell will not print this exception message, even though the comment says "// Already printed message, so just fall
through". I add System.err.println(ee.getMessage()); for this exception.
The problem is that in NativeJavaPackage.get(String, Scriptable) method, if a ClassNotFoundException is caught, a
NativeJavaPackage object is created and passed back to ImporterTopLevel.get Method. So in ImporterTopLevel.get method, object v
is always not NOT_FOUND and the ambiguous exception will be thrown. Object v is supposed to be a Class object but it actually is
a Package object.
The fix can be either (1) in NativeJavaPackage.get(String, Scriptable) method, if a ClassNotFoundException is caught, return a
NOT_FOUND object (you may still create a Package object) or (2) in ImporterTopLevel.get method, make sure the returned object
from NativeJavaPackage.get method is of NativeJavaClass type.
Howard
Support for jsGet_ and jsSet_ prefixes to methods for explicit getter
and setter definition.
Addition of "importClass" and "importPackage" top-level functions.
The beginnings of a history object accessible from the shell.
