function encodeValue()

in backend/columnar.js [259:292]
34 lines of code
17 McCabe index (conditional complexity)

function encodeValue(op, columns) {
  if ((op.action !== 'set' && op.action !== 'inc') || op.value === null) {
    columns.valLen.appendValue(VALUE_TYPE.NULL)
  } else if (op.value === false) {
    columns.valLen.appendValue(VALUE_TYPE.FALSE)
  } else if (op.value === true) {
    columns.valLen.appendValue(VALUE_TYPE.TRUE)
  } else if (typeof op.value === 'string') {
    const numBytes = columns.valRaw.appendRawString(op.value)
    columns.valLen.appendValue(numBytes << 4 | VALUE_TYPE.UTF8)
  } else if (ArrayBuffer.isView(op.value)) {
    const numBytes = columns.valRaw.appendRawBytes(new Uint8Array(op.value.buffer))
    columns.valLen.appendValue(numBytes << 4 | VALUE_TYPE.BYTES)
  } else if (typeof op.value === 'number') {
    let [typeTag, value] = getNumberTypeAndValue(op)
    let numBytes
    if (typeTag === VALUE_TYPE.LEB128_UINT) {
      numBytes = columns.valRaw.appendUint53(value)
    } else if (typeTag === VALUE_TYPE.IEEE754) {
      numBytes = columns.valRaw.appendRawBytes(value)
    } else {
      numBytes = columns.valRaw.appendInt53(value)
    }
    columns.valLen.appendValue(numBytes << 4 | typeTag)
  } else if (typeof op.datatype === 'number' && op.datatype >= VALUE_TYPE.MIN_UNKNOWN &&
             op.datatype <= VALUE_TYPE.MAX_UNKNOWN && op.value instanceof Uint8Array) {
    const numBytes = columns.valRaw.appendRawBytes(op.value)
    columns.valLen.appendValue(numBytes << 4 | op.datatype)
  } else if (op.datatype) {
      throw new RangeError(`Unknown datatype ${op.datatype} for value ${op.value}`)
  } else {
    throw new RangeError(`Unsupported value in operation: ${op.value}`)
  }
}