fun beginMessage()

in crumb-compiler/src/main/kotlin/com/uber/crumb/internal/wire/ProtoReader.kt [73:86]

• 11 lines of code
• 3 McCabe index (conditional complexity)

  fun beginMessage(): Long {
    check(state == STATE_LENGTH_DELIMITED) { "Unexpected call to beginMessage()" }
    if (++recursionDepth > RECURSION_LIMIT) {
      throw IOException("Wire recursion limit exceeded")
    }
    // Allocate a buffer to store unknown fields encountered at this recursion level.
    if (recursionDepth > bufferStack.size) bufferStack += Buffer()
    // Give the pushed limit to the caller to hold. The value is returned in endMessage() where we
    // resume using it as our limit.
    val token = pushedLimit
    pushedLimit = -1L
    state = STATE_TAG
    return token
  }