Method collectValue

Rewrite-Parser.beta.js:3249–3275

()

    }

    collectValue() {
      let value = ''
      let depth = 0
      // console.log(`Collecting value starting at position ${this.position}`)
      while (this.position < this.tokens.length) {
        const token = this.peek()
        if (token.type === 'LPAREN') {
          depth++
          this.consume()
          value += '('
        } else if (token.type === 'RPAREN') {
          if (depth === 0) {
            break
          }
          depth--
          this.consume()
          value += ')'
        } else if (token.type === 'COMMA' && depth === 0) {
          break
        } else {
          value += token.value
          this.consume()
        }
      }
      // console.log(`Collected value: '${value}'`)
      return value
    }
  }

  function checkBalancedParentheses(input) {