nl_tokens: Handles a bracketed expression to be parsed
pl_tokens: function parseBrackets ( link , index , expr ) { var call = getFunctionCall ( expr ) ; var insideBrackets = <mask> . slice ( 1 , - 1 ) ; var evaledLink = parsePart ( link , index ) ; index += 1 ; link = '[~~insideBrackets~~]' ; if ( expr . charAt ( propertyRegex . lastIndex ) === '.' ) { link = parsePart ( link , index ) ; } else { link = '_ref' + currentReference + link ; } link = evaledLink + link ; var ref = currentReference ; link = link . replace ( '~~insideBrackets~~' , parsePropertyChains ( insideBrackets ) ) ; currentReference = ref ; return link ; }