func parseInfoBlock()

in Sources/SIL/BitcodeParser.swift [134:178]
42 lines of code
8 McCabe index (conditional complexity)

    func parseInfoBlock(abbrLen: Int) throws {
        var currentInfo: BitcodeBlockInfo?
        while true {
            let abbrev = try stream.next(bits: abbrLen)
            switch (abbrev) {
            case endBlock:
                stream.align(toMultipleOf: 32)
                return
            case unabbrevRecord:
                let record = try parseUnabbrevRecord()
                // Unabbreviated records have no structure, so the cast to bits is safe
                let ops = record.ops.map { $0.bits! }
                switch (record.code) {
                case setbid:
                    assert(ops.count == 1)
                    let blockId: Bits = ops[0]
                    if blockInfoTemplates[blockId] == nil {
                        blockInfoTemplates[blockId] = BitcodeBlockInfo(id: blockId)
                    }
                    currentInfo = blockInfoTemplates[blockId]
                case blockName:
                    let nameBytes = ops.map { $0.uint8 }
                    guard let name = String(bytes: nameBytes, encoding: .utf8) else {
                        // The name was incorrect, so we skip it.
                        continue
                    }
                    currentInfo?.name = name
                    break
                case setRecordName:
                    let recordId = ops[0]
                    let nameBytes = ops.suffix(from: 1).map { $0.uint8 }
                    guard let name = String(bytes: nameBytes, encoding: .utf8) else {
                        // The name was incorrect, so we skip it.
                        continue
                    }
                    currentInfo?.recordNames[recordId] = name
                    break
                default:
                    throw Error.unsupportedBlockInfoRecord(record.code)
                }
            default:
                throw Error.unsupportedBlockInfoAbbrev(abbrev)
            }
        }
    }