Discussion on: How I can extract words from strings using regular expressions?

[stereobooster]

Use parser, for example pegjs.org/online

Expression
  = "(" _ head:(Expression / Pair) _ ")" {
      return head;
    } /
    "(" _ head:(Expression / Pair) _ operator:("AND" / "OR") _ tail: (Expression / Pair) _ ")" {
      return { [operator]: [head, tail]};
    }

Pair
  = head:String _ ":" _ tail:String {
      return [head, tail];
    }

String "string"
  = "\"" [^\"]+ "\"" { return text(); }

_ "whitespace"
  = [ \t\n\r]*