diff options
Diffstat (limited to 'csharp/src/Google.Protobuf/Reflection')
| -rw-r--r-- | csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs | 8 | ||||
| -rw-r--r-- | csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs | 12 | ||||
| -rw-r--r-- | csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs | 63 | ||||
| -rw-r--r--[-rwxr-xr-x] | csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs | 10 | ||||
| -rw-r--r-- | csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs | 16 |
5 files changed, 84 insertions, 25 deletions
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs index 99ca4bf3..9c2160fe 100644 --- a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs +++ b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs @@ -53,13 +53,13 @@ namespace Google.Protobuf.Reflection private readonly HashSet<FileDescriptor> dependencies; - internal DescriptorPool(FileDescriptor[] dependencyFiles) + internal DescriptorPool(IEnumerable<FileDescriptor> dependencyFiles) { dependencies = new HashSet<FileDescriptor>(); - for (int i = 0; i < dependencyFiles.Length; i++) + foreach (var dependencyFile in dependencyFiles) { - dependencies.Add(dependencyFiles[i]); - ImportPublicDependencies(dependencyFiles[i]); + dependencies.Add(dependencyFile); + ImportPublicDependencies(dependencyFile); } foreach (FileDescriptor dependency in dependencyFiles) diff --git a/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs index 2a3d5c7a..152467d8 100644 --- a/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs +++ b/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs @@ -116,13 +116,18 @@ namespace Google.Protobuf.Reflection /// that is the responsibility of the accessor. /// </para> /// <para> - /// The value returned by this property will be non-null for all regular fields. However, - /// if a message containing a map field is introspected, the list of nested messages will include + /// In descriptors for generated code, the value returned by this property will be non-null for all + /// regular fields. However, if a message containing a map field is introspected, the list of nested messages will include /// an auto-generated nested key/value pair message for the field. This is not represented in any /// generated type, and the value of the map field itself is represented by a dictionary in the /// reflection API. There are never instances of those "hidden" messages, so no accessor is provided /// and this property will return null. /// </para> + /// <para> + /// In dynamically loaded descriptors, the value returned by this property will current be null; + /// if and when dynamic messages are supported, it will return a suitable accessor to work with + /// them. + /// </para> /// </remarks> public IFieldAccessor Accessor => accessor; @@ -330,7 +335,8 @@ namespace Google.Protobuf.Reflection private IFieldAccessor CreateAccessor() { // If we're given no property name, that's because we really don't want an accessor. - // (At the moment, that means it's a map entry message...) + // This could be because it's a map message, or it could be that we're loading a FileDescriptor dynamically. + // TODO: Support dynamic messages. if (propertyName == null) { return null; diff --git a/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs index be94cb10..799f7291 100644 --- a/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs +++ b/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs @@ -34,6 +34,7 @@ using Google.Protobuf.WellKnownTypes; using System; using System.Collections.Generic; using System.Collections.ObjectModel; +using System.Linq; namespace Google.Protobuf.Reflection { @@ -54,12 +55,12 @@ namespace Google.Protobuf.Reflection ForceReflectionInitialization<Value.KindOneofCase>(); } - private FileDescriptor(ByteString descriptorData, FileDescriptorProto proto, FileDescriptor[] dependencies, DescriptorPool pool, bool allowUnknownDependencies, GeneratedClrTypeInfo generatedCodeInfo) + private FileDescriptor(ByteString descriptorData, FileDescriptorProto proto, IEnumerable<FileDescriptor> dependencies, DescriptorPool pool, bool allowUnknownDependencies, GeneratedClrTypeInfo generatedCodeInfo) { SerializedData = descriptorData; DescriptorPool = pool; Proto = proto; - Dependencies = new ReadOnlyCollection<FileDescriptor>((FileDescriptor[]) dependencies.Clone()); + Dependencies = new ReadOnlyCollection<FileDescriptor>(dependencies.ToList()); PublicDependencies = DeterminePublicDependencies(this, proto, dependencies, allowUnknownDependencies); @@ -67,11 +68,11 @@ namespace Google.Protobuf.Reflection MessageTypes = DescriptorUtil.ConvertAndMakeReadOnly(proto.MessageType, (message, index) => - new MessageDescriptor(message, this, null, index, generatedCodeInfo.NestedTypes[index])); + new MessageDescriptor(message, this, null, index, generatedCodeInfo?.NestedTypes[index])); EnumTypes = DescriptorUtil.ConvertAndMakeReadOnly(proto.EnumType, (enumType, index) => - new EnumDescriptor(enumType, this, null, index, generatedCodeInfo.NestedEnums[index])); + new EnumDescriptor(enumType, this, null, index, generatedCodeInfo?.NestedEnums[index])); Services = DescriptorUtil.ConvertAndMakeReadOnly(proto.Service, (service, index) => @@ -98,13 +99,9 @@ namespace Google.Protobuf.Reflection /// Extracts public dependencies from direct dependencies. This is a static method despite its /// first parameter, as the value we're in the middle of constructing is only used for exceptions. /// </summary> - private static IList<FileDescriptor> DeterminePublicDependencies(FileDescriptor @this, FileDescriptorProto proto, FileDescriptor[] dependencies, bool allowUnknownDependencies) + private static IList<FileDescriptor> DeterminePublicDependencies(FileDescriptor @this, FileDescriptorProto proto, IEnumerable<FileDescriptor> dependencies, bool allowUnknownDependencies) { - var nameToFileMap = new Dictionary<string, FileDescriptor>(); - foreach (var file in dependencies) - { - nameToFileMap[file.Name] = file; - } + var nameToFileMap = dependencies.ToDictionary(file => file.Name); var publicDependencies = new List<FileDescriptor>(); for (int i = 0; i < proto.PublicDependency.Count; i++) { @@ -114,8 +111,7 @@ namespace Google.Protobuf.Reflection throw new DescriptorValidationException(@this, "Invalid public dependency index."); } string name = proto.Dependency[index]; - FileDescriptor file = nameToFileMap[name]; - if (file == null) + if (!nameToFileMap.TryGetValue(name, out var file)) { if (!allowUnknownDependencies) { @@ -316,6 +312,49 @@ namespace Google.Protobuf.Reflection } /// <summary> + /// Converts the given descriptor binary data into FileDescriptor objects. + /// Note: reflection using the returned FileDescriptors is not currently supported. + /// </summary> + /// <param name="descriptorData">The binary file descriptor proto data. Must not be null, and any + /// dependencies must come before the descriptor which depends on them. (If A depends on B, and B + /// depends on C, then the descriptors must be presented in the order C, B, A.) This is compatible + /// with the order in which protoc provides descriptors to plugins.</param> + /// <returns>The file descriptors corresponding to <paramref name="descriptorData"/>.</returns> + public static IReadOnlyList<FileDescriptor> BuildFromByteStrings(IEnumerable<ByteString> descriptorData) + { + ProtoPreconditions.CheckNotNull(descriptorData, nameof(descriptorData)); + + // TODO: See if we can build a single DescriptorPool instead of building lots of them. + // This will all behave correctly, but it's less efficient than we'd like. + var descriptors = new List<FileDescriptor>(); + var descriptorsByName = new Dictionary<string, FileDescriptor>(); + foreach (var data in descriptorData) + { + var proto = FileDescriptorProto.Parser.ParseFrom(data); + var dependencies = new List<FileDescriptor>(); + foreach (var dependencyName in proto.Dependency) + { + if (!descriptorsByName.TryGetValue(dependencyName, out var dependency)) + { + throw new ArgumentException($"Dependency missing: {dependencyName}"); + } + dependencies.Add(dependency); + } + var pool = new DescriptorPool(dependencies); + FileDescriptor descriptor = new FileDescriptor( + data, proto, dependencies, pool, + allowUnknownDependencies: false, generatedCodeInfo: null); + descriptors.Add(descriptor); + if (descriptorsByName.ContainsKey(descriptor.Name)) + { + throw new ArgumentException($"Duplicate descriptor name: {descriptor.Name}"); + } + descriptorsByName.Add(descriptor.Name, descriptor); + } + return new ReadOnlyCollection<FileDescriptor>(descriptors); + } + + /// <summary> /// Returns a <see cref="System.String" /> that represents this instance. /// </summary> /// <returns> diff --git a/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs index 86942acc..dbb6768b 100755..100644 --- a/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs +++ b/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs @@ -72,23 +72,21 @@ namespace Google.Protobuf.Reflection ClrType = generatedCodeInfo?.ClrType; ContainingType = parent; - // Note use of generatedCodeInfo. rather than generatedCodeInfo?. here... we don't expect - // to see any nested oneofs, types or enums in "not actually generated" code... we do - // expect fields though (for map entry messages). + // If generatedCodeInfo is null, we just won't generate an accessor for any fields. Oneofs = DescriptorUtil.ConvertAndMakeReadOnly( proto.OneofDecl, (oneof, index) => - new OneofDescriptor(oneof, file, this, index, generatedCodeInfo.OneofNames[index])); + new OneofDescriptor(oneof, file, this, index, generatedCodeInfo?.OneofNames[index])); NestedTypes = DescriptorUtil.ConvertAndMakeReadOnly( proto.NestedType, (type, index) => - new MessageDescriptor(type, file, this, index, generatedCodeInfo.NestedTypes[index])); + new MessageDescriptor(type, file, this, index, generatedCodeInfo?.NestedTypes[index])); EnumTypes = DescriptorUtil.ConvertAndMakeReadOnly( proto.EnumType, (type, index) => - new EnumDescriptor(type, file, this, index, generatedCodeInfo.NestedEnums[index])); + new EnumDescriptor(type, file, this, index, generatedCodeInfo?.NestedEnums[index])); fieldsInDeclarationOrder = DescriptorUtil.ConvertAndMakeReadOnly( proto.Field, diff --git a/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs index 5906c2e3..c026bea6 100644 --- a/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs +++ b/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs @@ -85,6 +85,16 @@ namespace Google.Protobuf.Reflection /// Gets an accessor for reflective access to the values associated with the oneof /// in a particular message. /// </summary> + /// <remarks> + /// <para> + /// In descriptors for generated code, the value returned by this property will always be non-null. + /// </para> + /// <para> + /// In dynamically loaded descriptors, the value returned by this property will current be null; + /// if and when dynamic messages are supported, it will return a suitable accessor to work with + /// them. + /// </para> + /// </remarks> /// <value> /// The accessor used for reflective access. /// </value> @@ -110,6 +120,12 @@ namespace Google.Protobuf.Reflection private OneofAccessor CreateAccessor(string clrName) { + // We won't have a CLR name if this is from a dynamically-loaded FileDescriptor. + // TODO: Support dynamic messages. + if (clrName == null) + { + return null; + } var caseProperty = containingType.ClrType.GetProperty(clrName + "Case"); if (caseProperty == null) { |