Tab completion and inspection #34
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Plan to borrow code from SWANK (public domain) to inspect functions and variables. This should be able to replace the SLIME feature which shows the current function argument list.
Typing Shift-Tab brings up a tooltip containing the output of DESCRIBE. To mimic the behaviour of SLIME, the function at the start of the form is described, not the symbol at the cursor.
* If no function symbol found, searches surrounding form to handle macros and let forms
* Copied public domain code from swank into src/completions.lisp into new package cl-jupyter-swank * Added a handler for complete_request message types. Currently just prints the message fields.
Finds the symbol before the cursor position using simple backward search. Will get confused by symbols with spaces in the name, but hopefully rare. Tooltip contains matching symbols sorted by length, shortest first.
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Sorry I'm a little bit late for the reply. Completion is something I really would like to support but I did not find enough time to start it, I'm glad you did! So before finding some dev. time I created a branch |
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This PR replaces PR #33, and includes both that inspect_request handling code and complete_request handling. These provide tab completion of symbols and keywords, and inspection of functions with Shift-Tab.
I put public domain code from SWANK into a separate file, completions.lisp. Unfortunately this part of the SWANK backend isn't in Conium on QuickLisp, but it's fairly small. The tab completion code therefore uses the same method as SLIME to find the completions. A list of possible completions is presented in the notebook, sorted with shortest at the top.
The code works with SBCL 1.4.2 on Debian with Jupyter 4.1.0. I think the basic functionality is there, but could of course be improved and should probably be tested on other systems.