Method set

projects/JavaScript/proto/fbe.js:1785–1829

* Set the decimal value * @this {!FieldModelDecimal} * @param {!Big} value Value

(value)

   * @param {!Big} value Value
   */
  set (value) {
    console.assert(((this._buffer.offset + this.fbeOffset + this.fbeSize) <= this._buffer.size), 'Model is broken!')
    if ((this._buffer.offset + this.fbeOffset + this.fbeSize) > this._buffer.size) {
      return
    }

    // Extract decimal parts
    let negative = value.s < 0
    let scale = Math.max(0, value.c.length - 1 - value.e)
    let number = value.mul(Math.pow(10, scale)).abs()

    // Check for decimal scale overflow
    if ((scale < 0) || (scale > 28)) {
      // Value scale exceeds .NET Decimal limit of [0, 28]
      this.writeCount(this.fbeOffset, 0, this.fbeSize)
      return
    }

    // Write unscaled value to bytes 0-11
    let index = 0
    while (number > 0) {
      // Check for decimal number overflow
      if (index > 11) {
        // Value too big for .NET Decimal (bit length is limited to [0, 96])
        this.writeCount(this.fbeOffset, 0, this.fbeSize)
        return
      }
      let byte = parseInt(number.mod(256))
      this.writeByte(this.fbeOffset + index, byte)
      number = number.div(256).round(0, 0)
      index++
    }

    // Fill remaining bytes with zeros
    while (index < 12) {
      this.writeByte(this.fbeOffset + index, 0)
      index++
    }

    // Write scale at byte 14
    this.writeByte(this.fbeOffset + 14, scale)

    // Write signum at byte 15
    this.writeByte(this.fbeOffset + 15, (negative ? 0x80 : 0))
  }
}

exports.FieldModelDecimal = FieldModelDecimal