readRecord()

in backend/encoding.js [865:887]

• 23 lines of code
• 10 McCabe index (conditional complexity)

  readRecord() {
    this.count = this.readInt53()
    if (this.count > 1) {
      const value = this.readRawValue()
      if ((this.state === 'repetition' || this.state === 'literal') && this.lastValue === value) {
        throw new RangeError('Successive repetitions with the same value are not allowed')
      }
      this.state = 'repetition'
      this.lastValue = value
    } else if (this.count === 1) {
      throw new RangeError('Repetition count of 1 is not allowed, use a literal instead')
    } else if (this.count < 0) {
      this.count = -this.count
      if (this.state === 'literal') throw new RangeError('Successive literals are not allowed')
      this.state = 'literal'
    } else { // this.count == 0
      if (this.state === 'nulls') throw new RangeError('Successive null runs are not allowed')
      this.count = this.readUint53()
      if (this.count === 0) throw new RangeError('Zero-length null runs are not allowed')
      this.lastValue = null
      this.state = 'nulls'
    }
  }