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JSDT/Debug/Rhino

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Revision as of 16:28, 14 January 2011 by Michael Rennie.ca.ibm.com (Talk | contribs) (Source Lookup)

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Local Rhino Debugging

New to 1.3 is the ability to locally launch and debug JavaScript file(s) using Rhino. This new launching support includes context-sensitive launching from the platform and automatic source / script path updating.

The related New and Noteworthy entry is here.

Launch Options

Include Paths

The Include tab for a Rhino configuration allows you to quickly and easily add additional scripts to be run before the main script.

You have the option to add one or more scripts from the workspace or from the local or extended file system.

Using the Up and Down buttons you can place the scripts in the order you would like them to be run. The script at the top of the listing will be run first. You can also use the Remove button to remove the selected included scripts from the listing.

Any scripts that are added to the include path also have their containing folder automatically added to the source lookup path. For example if you added the script /home/user/myscript.js to the include path, the folder entry for /home/user/ would be added to the source lookup path for you automatically.

Source Lookup

The Source tab allows you to customize where the launch will look for your source. This tab is automatically updated to track the script specified on the Main tab as well as entries on the Include tab.

Any automatically added entries can be changed / removed as you like and and new entries can be added from one of the following locations:

  • Archive
  • External Archive
  • File System Directory
  • Java Classpath Variable
  • Java Library
  • Java Project
  • Project
  • Working Set
  • Workspace
  • Workspace Folder

To modify the source lookup path simply use the Add..., Remove... or Edit... buttons. The Default project source lookup entry cannot be modified, as it it directly tied to the script specified on the Main tab. But you can modify and edit any child entries of the Default project entry.

Embedding the Rhino Debugger

One of the more powerful usages of the Rhino debug support is that it can easily be embedded into your existing server. Embedding the Rhino Debugger allows you to remotely debug the loading and execution of scripts from the Eclipse IDE.

To learn how to embed the Rhino Debugger please go to this page.

Rhino Debug Wire Protocol

To provide support for the Rhino interpreter, we had to create both sides of the coin - the debugger and the client. To facilitate communication between the debugger and the client we created an adapted version of v8 (JSON-based) packet communication.

The complete specification for the RDWP can be found here.

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