Function parse

lib/brackets.js:9–32

* Parse string to nodes tree

(str)

   * Parse string to nodes tree
   */
  parse(str) {
    let current = ['']
    let stack = [current]

    for (let sym of str) {
      if (sym === '(') {
        current = ['']
        last(stack).push(current)
        stack.push(current)
        continue
      }

      if (sym === ')') {
        stack.pop()
        current = last(stack)
        current.push('')
        continue
      }

      current[current.length - 1] += sym
    }

    return stack[0]
  },

  /**
   * Generate output string by nodes tree