Outparamdel

Blog entry.

Pork#Running_outparamdel gives an example of running the tool.

TODO

Manual Mozilla changes

• Convert NS_ERROR errors to constants

Automatically Detect Outparam Candidates (dehydra_scripts/outparams.js)

• Process function body ensuring that only errors codes can be returned. NS_OK + some error
• Then check the class hierarchy if this is the only implementation of the method
• Use class hierarchy to start rewriting at the oldest virtual method that target method overloads
• Ensure that the virtual method isn't originally defined by XPIDL
• Ensure that all overloads of this method will be rewritten (can't change return value otherwise)

Near Future

• Write an optimizer for ?: caller rewrites
• Need a macro to annotate getters where assigning NULL to the outparam has a special meaning. ie nsresult getterFunc(NOT_NULL(nsISupports **outval))