AddressBookDeserializer.cs

using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Text;
using PbfLite.Benchmark.Models;

namespace PbfLite.Benchmark.PbfLite {
    static class AddressBookDeserializer {
        public static AddressBook Deserialize(byte[] source) {
            var data = PbfBlock.Create(source);

            var result = new AddressBook() {
                People = new List<Person>(10000)
            };

            var (fieldNumber, wireType) = data.ReadFieldHeader();
            while (fieldNumber != 0) {
                switch (fieldNumber) {
                    case 1: result.People.Add(DeserializePerson(PbfBlock.Create(data.ReadLengthPrefixedBytes()))); break;
                    default: data.SkipField(wireType); break;
                }

                (fieldNumber, wireType) = data.ReadFieldHeader();
            }

            return result;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        private static Person DeserializePerson(PbfBlock data) {
            var result = new Person() {
                Phones = new List<PhoneNumber>(2)
            };

            var (fieldNumber, wireType) = data.ReadFieldHeader();
            while (fieldNumber != 0) {
                switch (fieldNumber) {
                    case 1: result.Name = data.ReadString(); break;
                    case 2: result.ID = data.ReadInt(); break;
                    case 3: result.Email = data.ReadString(); break;
                    case 4: result.Phones.Add(DeserializePhone(PbfBlock.Create(data.ReadLengthPrefixedBytes()))); break;
                    default: data.SkipField(wireType); break;
                }

                (fieldNumber, wireType) = data.ReadFieldHeader();
            }

            return result;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        private static PhoneNumber DeserializePhone(PbfBlock data) {
            var result = new PhoneNumber();

            var (fieldNumber, wireType) = data.ReadFieldHeader();
            while (fieldNumber != 0) {
                switch (fieldNumber) {
                    case 1: result.Number = data.ReadString(); break;
                    case 2: result.Type = (PhoneType)data.ReadInt(); break;
                    default: data.SkipField(wireType); break;
                }

                (fieldNumber, wireType) = data.ReadFieldHeader();
            }

            return result;
        }

    }
}