Demo of LSP inlay hints in Whitespace

README.md

Inlay Hints for Whitespace

The syntax of the Whitespace programming language is invisible—it uses only space, tab, and line feed—so editing a program manually is tedious and most people will instead develop using a “Whitespace assembly” syntax with readable opcodes. I am working on a to-be language server for Whitespace that will use inlay hints to display the opcodes in the invisible syntax. The LSP only allows Type and Parameter values for InlayHintKind, which is exclusive of this use case (vscode#151920). I propose that this enum be extended to include a variant for this case.

This gist roughly demonstrates how the inlay hints would work for a Whitespace program: It includes the annotated example from the Whitespace tutorial formatted in the standard syntax, in Whitespace assembly syntax, and with inlay hints for assembly opcodes interspersed.

count.ws

count.wsa

    push 1
C:
    dup
    printi
    push 10
    printc
    push 1
    add
    dup
    push 11
    sub
    jz E
    jmp C
E:
    drop
    end

count_inlay.ws

push·1   	
label·C
   	    		
dup 
 printi	
 	push·10   	 	 
printc	
  push·1   	
add	   dup 
 push·11   	 		
sub	  	jz·E
	  	   	 	
jmp·C
 
 	    		
label·E
   	   	 	
drop 

end