functionSignatures.json for built-in functions

I would like to define code suggestions/completions for built-in Matlab functions. This document,

https://www.mathworks.com/help/matlab/matlab_prog/customize-code-suggestions-and-completions.html#d127e74561

describes how to do so for user-defined function using a functionSignatures.json file. Applying this to builtins, however, would seem to require tampering with MathWorks-supplied files and folders. In particular, I would have to create a resource folders, or modify existing resource folders, in the MathWorks-controlled folders where the functions reside.

I would like to avoid this, if possible. Is there any way to make a functionSignatures.json apply to a function in an arbitrary location?

Answer 1

[Steven Lord]

I don't believe it's possible to create a functionSignatures.json file that applies to a function in an arbitrary location. Suppose you created one that had tab completion for a function that's overloaded as a method by multiple classes. Would you want that functionSignatures.json file to apply to any of those overloaded methods that are not covered by a functionSignatures.json file in their class folder?

If there are specific MathWorks built-in functions or functions included as part of MATLAB that do not have suggestion/completion data, I recommend you contact Technical Support and ask them to file an enhancement request to the development team(s) that own the functions.

IIRC I think you were asking in a different thread about completion for the methods function before. That could get very complicated as methods can accept either a class name or a class instance and at least a few classes overload that method for the latter scenario.

which -all methods

built-in (/MATLAB/toolbox/matlab/datatypes/methods)
/MATLAB/toolbox/matlab/serial/@serial/methods.m                         % serial method
/MATLAB/toolbox/imaq/imaq/@imaqdevice/methods.m                         % imaqdevice method
/MATLAB/toolbox/imaq/imaq/@imaqchild/methods.m                          % imaqchild method
/MATLAB/toolbox/instrument/instrument/@icgroup/methods.m                % icgroup method
/MATLAB/toolbox/instrument/instrument/@iviconfigurationstore/methods.m  % iviconfigurationstore method
/MATLAB/toolbox/instrument/instrument/@LegacyIcdevice/methods.m         % LegacyIcdevice method
/MATLAB/toolbox/shared/instrument/@icinterface/methods.m                % icinterface method

[Matt J]

Would you want that functionSignatures.json file to apply to any of those overloaded methods that are not covered by a functionSignatures.json file in their class folder?

By "arbitrary location", what I meant was, a location chosen by me in the .json entry. Something like this,

    "/MATLAB/toolbox/matlab/datatypes/methods": {
        "inputs": [
            {
                "name": "fun",
                "kind": "required",
                "type": "matlabpath=*.m"
            }
        ]
    }