Strange Rhino is a fork of Mozilla Rhino that has been customized for its role as the script engine for Strange Eons.
On the language side, the main difference between the two is that Strange Rhino accepts some non-standard syntax:
- Identifiers may start with
@or#in addition to the usual characters. - Identifiers that start with
$,@, or#can include hyphens-.
In Strange Eons, these identifiers have special meaning:
$
Identifiers starting in $ are used to look up settings, string-based properties that are automatically saved with components, as well as being used to store user preferences and the configuration of project and task folders.
@
Identifiers starting with @ are used to look up strings in the database of user interface strings. For example, a dialog box button might be given a label button.text = @accept-changes.
#
Similarly, identifiers starting with # are used to look up strings in the database of game language strings.
This means that E4X support support is not possible in Strange Rhino. If private properties are ever added to Rhino using the current proposed syntax, it is likely that this will also cause compatibility issues.
In order to interoperate with the Strange Eons script debugger, the adapter classes in javascript/tools/debugger have been modified and/or replaced. The following classes are kept (with modifications): Dim, GuiCallback, ScopeProvider, SourceProvider. The Rhino debugger is not used, and its sources and dependencies have been removed: Main, SwingGui, test.js and the entire contents of the treetable package.
The contents of the ca.cgjennings.script.util package bridge between Strange Rhino and Strange Eons via the JSR 223 scripting interface. These classes were adapted from the reference implementation that was used to add a variant of Rhino to Java 6 for JSR 223.
Up to the commit tagged v1.7.9r, Strange Rhino used a different package hierarchy to prevent confusion with other variants of Rhino. The package root was ca.cgjennings.script.mozilla instead of org.mozilla.
This practice stopped with the commit tagged v1.7.9u to make it easier to merge in upstream changes. Updating existing code should require little more than replacing the string ca.cgjennings.script.mozilla with org.mozilla, and likewise ca/cgjennings/script/mozilla with org/mozilla.
Strange Rhino and Mozilla Rhino are licensed under MPL 2.0. The original Rhino license and notices can be found under src/license-metadata. Rhino image adapted from an icon by Freepik under Creative Commons BY 3.0.