Highlight At Commands

[valaises]

Please, checkout the branch from this PR smallcloudai/refact-lsp#170. And run refact-lsp

cargo build && target/debug/refact-lsp --address-url https://dogfood.pilot.smallcloud.ai -k your_key --http-port 8001 --lsp-port 8002 --logs-stderr -b --ast --vecdb

connect your IDE to running refact-lsp to feed in some files.

Response from http://localhost:8001/v1/at-command-preview now contains a new field: highlight
That has a structure:

{
  kind: string  // could be "cmd" or "arg"
  ok: boolean  // true if cmd or arg is parsed correctly and can be executed
  pos1: int  // position in query, start
  pos2: int // position in query, end
  reason: String // empty if ok, otherwise gives you a reason why it isn't valid
}

For example for query:

...
my_text to execute @workspace and @definition BigFish
...

it shall give you a preview response like:

{
  "highlight":[
    {"kind":"cmd","ok":true,"pos1":24,"pos2":34,"reason":""},
    {"kind":"cmd","ok":true,"pos1":39,"pos2":50,"reason":""},
    {"kind":"arg","ok":true,"pos1":51,"pos2":58,"reason":""}
  ],
  "messages":[...],
  "model":"..."
}

Please, note:

• if command (cmd + args) is not valid, not necessarily that both cmd + args will have ok: false. In some cases when cmd itself isn't valid, args are assumed to be valid.

What I think should be done:

• objects given to you in highlight should be highlighted in a textbox. cmd and args should have different colors. Invalid cmds and args have to be underlined with some red color. On mouse hover, there should be a popup with reason, if cmd or args are ok, no popup on hover should be present.

The highlight should be ONLY in a textbox, not it messages in a chat (FYI, valid commands are clipped from text; invalid commands are not)