A special combination will always include a (possibly invisible)
modifier, and is recognized when that modifier is executed (during parsing).
For example,
i.&1@:>
is detected when @: is executed with its u= i.&1 and its v= > . The
values of u and v are inspected. Seeing that they have the form for an
SC, the interpreter alters the routine-address from the normal handler
for @:, to proceed instead to the code performing the SC.
Henry Rich
On 7/30/2023 10:13 PM, Ak O wrote:
What system currently governs Syntax Highlighting in the editor?
By example:
If you start typing a number you get a certain colour.
If you type a letter you get another colour.
Also, how are Special Combinations currently triggered by the parser?
AO.
On Sun., Jul. 30, 2023, 11:51 Raul Miller, <rauldmil...@gmail.com> wrote:
I see two possible ways to implement this sort of functionality.
(A) Create a duplicate copy of J's parser, which would run in the
highlighting environment, to identify regions corresponding to
"special code", or
(B) Update J itself to provide a "dry run" mechanism to identify these
regions in a potential sentence (if and only if the sentence was
valid, though maybe that could be relaxed to "has a valid suffix").
Neither task is trivial. Either approach would require creating a
well-defined interface for this process.
--
Raul
On Sun, Jul 30, 2023 at 1:41 PM Hauke Rehr <hauke.r...@uni-jena.de> wrote:
my 2 cents
I’m quite satisfied with the highlight I get when
writing J in Vim; and with the highlight I get when
typesetting J in TeX with minted. Neither do custom
handling of Special Combinations, though.
IIRC, Michal rolled his own for his jprez stuff
(editor part).
@Michal: Did you consider highlighting SCs differently?
Any thoughts?
I’d be glad to have a visual indication that would
let me learn to use them without always having to
look them up (I still don’t grok even -:J).
Hauke
Am 30.07.23 um 19:17 schrieb Henry Rich:
What a great idea! I know nothing about Syntax Highlighting but I
would
love to see it in the display.
There will be a problem keeping the highlighting up to date with the
evolving support for special combinations.
Henry Rich
On 7/30/2023 12:59 PM, Ak O wrote:
Hi all, I hope you are all well.
Two questions.
1. Is there a way to include Special Combinations in Syntax
Highlighting?
Meaning some visual indicator that an arrangement of Operators
triggers a
Special Combination.
2. What page should I be looking up to understand the significance of
Syntax Highlights.
I am not sure what exactly that is called.
For example:
Something(...) NB. Colour change to 'Something'
Vs.
Something (...) NB. No Colour changes to 'Something'
Which page do I find that type of information?
Thank you,
AO.
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