MQTT-Regex parser in PEG.js

mqtt.pegjs

path = items:(pathStart pathEnd?) {return items[0].concat(items[1])}

pathStart = (items:(pathItem / singleParam / single)+)

pathEnd = item:(multiParam / multi / lastItem) {return item}

pathItem = text:pathName "/" {return {type: "text", content: text}}

lastItem = text:pathName "/"?

singleParam = "+" item:pathName "/" {return {type: "singleParam", name:item}}

multiParam = "#" item:pathName "/"? {return {type: "multiParam", name:item}}

single = "+" "/" {return {type: "single"}}

multi = "#" "/"? {return {type: "multi"}}

pathName = text:(pathText+) {return text.join("")}

pathText = [^/+#]