A GAP package for annotating functions with their expected output filters.

##What it can do This package is a library that can be used to automatically determine the output types of functions containing calls to the 'Objectify'-function. it currently returns output in about 50% of the cases in the library.

Additionally there is a prototype-implementation for annotating constructors to created objects. This is however quite rudimentary and one should rather use the version available on the 'PrintConstructors'-branch on the 'gap'-fork of LiftnLearn.

###How it works The findObjectify-files are responsible for finding all Objectify-calls in a given set of files/functions. It returns an object that collects relevant information per set of declaration and implementation files.

Based on this object the produceDeclaration files then produces a declaration- file that is wrapping the respective functions and passes the detected output- filters in the arguments of the declaration. These are currently not used.

##What it can't do It can't determine the output type of Objectify-calls whose results depend on values that are only determined on runtime.

It currently also cannot handle if there are multiple Objectify-calls within one and the same function, i.e. when they are occuring within conditional statements.

In any of those cases it will return an IsObject-filter for the function. There is currently no distinction between recognizing IsObject as the actual result filter of a function and returning IsObject due to a lack of better information.

There is also no useful output for global functions installed using InstallGlobalFunctions (it is always the empty list printed).

##Bugs No bugs are currently known.

##How to use At first the package should be loaded into a running GAP-session.

LoadPackage("MitM");

One can then pass the names of a .gi and respective .gd file to the declareOperationsCaller-function as implemented in lib/produceDeclaration.gd and an output-path for the resulting header-file.

For example: declareOperationsCaller("json_output/grp.gd.json", "json_output/grp.gi.json", "declarationsForGroups.gd");

The function however expects that the GAP-files have already been precompiled to the JSON-format using the JSON-compiler.