Add a Pascal rule on ACE web editor

Question

I am using ACE web editor for coding in pascal language and a want to add a rule in the mode-pascal.js native file.

What I want is to highlight all 'read' and 'write' keywords in all lines begining with 'property' and ending with ';'.

Something like :

property Lala : Integer read (123) write (456);

But not :

var read := "write"; 

And with ACE... I need to do that with only one regexp, fun.

If someone have an idea, it can save a life !

Answer 1

Ace syntax highlighter supports states similar to textmate and sublime. That means you can match property keyword, and switch to a state that highlights read and write, something like this:

[
...
{
   regex: /property\b/
   token: "keyword",
   next: [
       {
           regex: /(read|write)\b/
           token: "keyword",
       },
       { include: "start" }, // include other rules if you want
       {
           regex: "$|;", 
           token: "text",
           next: "start" // exit the property state on line end or ;
       }
   ]
}
...