using System;
using System.Collections.Generic;
using System.Linq;

namespace Google.Protobuf.Reflection
{
	// Token: 0x0200006D RID: 109
	public sealed class TypeRegistry
	{
		// Token: 0x170001B4 RID: 436
		// (get) Token: 0x06000601 RID: 1537 RVA: 0x00015091 File Offset: 0x00013291
		public static TypeRegistry Empty { get; } = new TypeRegistry(new Dictionary<string, MessageDescriptor>());

		// Token: 0x06000602 RID: 1538 RVA: 0x00015098 File Offset: 0x00013298
		private TypeRegistry(Dictionary<string, MessageDescriptor> fullNameToMessageMap)
		{
			this.fullNameToMessageMap = fullNameToMessageMap;
		}

		// Token: 0x06000603 RID: 1539 RVA: 0x000150A8 File Offset: 0x000132A8
		public MessageDescriptor Find(string fullName)
		{
			MessageDescriptor messageDescriptor;
			this.fullNameToMessageMap.TryGetValue(fullName, out messageDescriptor);
			return messageDescriptor;
		}

		// Token: 0x06000604 RID: 1540 RVA: 0x000150C5 File Offset: 0x000132C5
		public static TypeRegistry FromFiles(params FileDescriptor[] fileDescriptors)
		{
			return TypeRegistry.FromFiles(fileDescriptors);
		}

		// Token: 0x06000605 RID: 1541 RVA: 0x000150D0 File Offset: 0x000132D0
		public static TypeRegistry FromFiles(IEnumerable<FileDescriptor> fileDescriptors)
		{
			ProtoPreconditions.CheckNotNull<IEnumerable<FileDescriptor>>(fileDescriptors, "fileDescriptors");
			TypeRegistry.Builder builder = new TypeRegistry.Builder();
			foreach (FileDescriptor fileDescriptor in fileDescriptors)
			{
				builder.AddFile(fileDescriptor);
			}
			return builder.Build();
		}

		// Token: 0x06000606 RID: 1542 RVA: 0x00015130 File Offset: 0x00013330
		public static TypeRegistry FromMessages(params MessageDescriptor[] messageDescriptors)
		{
			return TypeRegistry.FromMessages(messageDescriptors);
		}

		// Token: 0x06000607 RID: 1543 RVA: 0x00015138 File Offset: 0x00013338
		public static TypeRegistry FromMessages(IEnumerable<MessageDescriptor> messageDescriptors)
		{
			ProtoPreconditions.CheckNotNull<IEnumerable<MessageDescriptor>>(messageDescriptors, "messageDescriptors");
			return TypeRegistry.FromFiles(messageDescriptors.Select((MessageDescriptor md) => md.File));
		}

		// Token: 0x04000265 RID: 613
		private readonly Dictionary<string, MessageDescriptor> fullNameToMessageMap;

		// Token: 0x020000C6 RID: 198
		private class Builder
		{
			// Token: 0x06000780 RID: 1920 RVA: 0x00017801 File Offset: 0x00015A01
			internal Builder()
			{
				this.types = new Dictionary<string, MessageDescriptor>();
				this.fileDescriptorNames = new HashSet<string>();
			}

			// Token: 0x06000781 RID: 1921 RVA: 0x00017820 File Offset: 0x00015A20
			internal void AddFile(FileDescriptor fileDescriptor)
			{
				if (!this.fileDescriptorNames.Add(fileDescriptor.Name))
				{
					return;
				}
				foreach (FileDescriptor fileDescriptor2 in fileDescriptor.Dependencies)
				{
					this.AddFile(fileDescriptor2);
				}
				foreach (MessageDescriptor messageDescriptor in fileDescriptor.MessageTypes)
				{
					this.AddMessage(messageDescriptor);
				}
			}

			// Token: 0x06000782 RID: 1922 RVA: 0x000178C0 File Offset: 0x00015AC0
			private void AddMessage(MessageDescriptor messageDescriptor)
			{
				foreach (MessageDescriptor messageDescriptor2 in messageDescriptor.NestedTypes)
				{
					this.AddMessage(messageDescriptor2);
				}
				this.types[messageDescriptor.FullName] = messageDescriptor;
			}

			// Token: 0x06000783 RID: 1923 RVA: 0x00017920 File Offset: 0x00015B20
			internal TypeRegistry Build()
			{
				return new TypeRegistry(this.types);
			}

			// Token: 0x04000301 RID: 769
			private readonly Dictionary<string, MessageDescriptor> types;

			// Token: 0x04000302 RID: 770
			private readonly HashSet<string> fileDescriptorNames;
		}
	}
}