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Diffstat (limited to 'csharp/src/ProtoGen/Generator.cs')
| -rw-r--r-- | csharp/src/ProtoGen/Generator.cs | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/csharp/src/ProtoGen/Generator.cs b/csharp/src/ProtoGen/Generator.cs new file mode 100644 index 00000000..bc481ec0 --- /dev/null +++ b/csharp/src/ProtoGen/Generator.cs @@ -0,0 +1,267 @@ +#region Copyright notice and license
+
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using Google.ProtocolBuffers.Collections;
+using Google.ProtocolBuffers.Compiler.PluginProto;
+using Google.ProtocolBuffers.DescriptorProtos;
+using Google.ProtocolBuffers.Descriptors;
+
+namespace Google.ProtocolBuffers.ProtoGen
+{
+ /// <summary>
+ /// Code generator for protocol buffers. Only C# is supported at the moment.
+ /// </summary>
+ public sealed class Generator
+ {
+ private readonly GeneratorOptions options;
+
+ private Generator(GeneratorOptions options)
+ {
+ options.Validate();
+ this.options = options;
+ }
+
+ /// <summary>
+ /// Returns a generator configured with the specified options.
+ /// </summary>
+ public static Generator CreateGenerator(GeneratorOptions options)
+ {
+ return new Generator(options);
+ }
+
+ public void Generate(CodeGeneratorRequest request, CodeGeneratorResponse.Builder response)
+ {
+ IList<FileDescriptor> descriptors = ConvertDescriptors(options.FileOptions, request.ProtoFileList);
+
+ // Combine with options from command line
+ foreach (FileDescriptor descriptor in descriptors)
+ {
+ descriptor.ConfigureWithDefaultOptions(options.FileOptions);
+ }
+
+ bool duplicates = false;
+ Dictionary<string, bool> names = new Dictionary<string, bool>(StringComparer.OrdinalIgnoreCase);
+ foreach (FileDescriptor descriptor in descriptors)
+ {
+ string file = GetOutputFile(descriptor, false);
+ if (names.ContainsKey(file))
+ {
+ duplicates = true;
+ break;
+ }
+ names.Add(file, true);
+ }
+
+ //ROK - Changed to dictionary from HashSet to allow 2.0 compile
+ var filesToGenerate = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+ foreach (var item in request.FileToGenerateList)
+ {
+ filesToGenerate[item] = null;
+ }
+ foreach (FileDescriptor descriptor in descriptors)
+ {
+ // Optionally exclude descriptors in google.protobuf
+ if (descriptor.CSharpOptions.IgnoreGoogleProtobuf && descriptor.Package == "google.protobuf")
+ {
+ continue;
+ }
+ if (filesToGenerate.ContainsKey(descriptor.Name))
+ {
+ Generate(descriptor, duplicates, response);
+ }
+ }
+ }
+
+ /// <summary>
+ /// Generates code for a particular file. All dependencies must
+ /// already have been resolved.
+ /// </summary>
+ private void Generate(FileDescriptor descriptor, bool duplicates, CodeGeneratorResponse.Builder response)
+ {
+ var code = new StringBuilder();
+ var ucg = new UmbrellaClassGenerator(descriptor);
+ using (StringWriter textWriter = new StringWriter(code))
+ {
+ TextGenerator writer = new TextGenerator(textWriter, options.LineBreak);
+ ucg.Generate(writer);
+ }
+ response.AddFile(new CodeGeneratorResponse.Types.File.Builder
+ {
+ Name = GetOutputFile(descriptor, duplicates),
+ Content = code.ToString(),
+ }.Build());
+ }
+
+ private string GetOutputFile(FileDescriptor descriptor, bool duplicates)
+ {
+ CSharpFileOptions fileOptions = descriptor.CSharpOptions;
+
+ string filename = descriptor.CSharpOptions.UmbrellaClassname + descriptor.CSharpOptions.FileExtension;
+ if (duplicates)
+ {
+ string namepart;
+ if (String.IsNullOrEmpty(descriptor.Name) || String.IsNullOrEmpty(namepart = Path.GetFileNameWithoutExtension(descriptor.Name)))
+ throw new ApplicationException("Duplicate UmbrellaClassname options created a file name collision.");
+
+ filename = namepart + descriptor.CSharpOptions.FileExtension;
+ }
+
+ string outputDirectory = descriptor.CSharpOptions.OutputDirectory;
+ if (fileOptions.ExpandNamespaceDirectories)
+ {
+ string package = fileOptions.Namespace;
+ if (!string.IsNullOrEmpty(package))
+ {
+ string[] bits = package.Split('.');
+ foreach (string bit in bits)
+ {
+ outputDirectory = Path.Combine(outputDirectory, bit);
+ }
+ }
+ }
+
+ // As the directory can be explicitly specified in options, we need to make sure it exists
+ Directory.CreateDirectory(outputDirectory);
+ return Path.Combine(outputDirectory, filename);
+ }
+
+ /// <summary>
+ /// Resolves any dependencies and converts FileDescriptorProtos into FileDescriptors.
+ /// The list returned is in the same order as the protos are listed in the descriptor set.
+ /// Note: this method is internal rather than private to allow testing.
+ /// </summary>
+ /// <exception cref="DependencyResolutionException">Not all dependencies could be resolved.</exception>
+ public static IList<FileDescriptor> ConvertDescriptors(CSharpFileOptions options,
+ IList<FileDescriptorProto> fileList)
+ {
+ FileDescriptor[] converted = new FileDescriptor[fileList.Count];
+
+ Dictionary<string, FileDescriptor> convertedMap = new Dictionary<string, FileDescriptor>();
+
+ int totalConverted = 0;
+
+ bool madeProgress = true;
+ while (madeProgress && totalConverted < converted.Length)
+ {
+ madeProgress = false;
+ for (int i = 0; i < converted.Length; i++)
+ {
+ if (converted[i] != null)
+ {
+ // Already done this one
+ continue;
+ }
+ FileDescriptorProto candidate = fileList[i];
+ FileDescriptor[] dependencies = new FileDescriptor[candidate.DependencyList.Count];
+
+
+ CSharpFileOptions.Builder builder = options.ToBuilder();
+ if (candidate.Options.HasExtension(CSharpOptions.CSharpFileOptions))
+ {
+ builder.MergeFrom(
+ candidate.Options.GetExtension(CSharpOptions.CSharpFileOptions));
+ }
+ CSharpFileOptions localOptions = builder.Build();
+
+ bool foundAllDependencies = true;
+ for (int j = 0; j < dependencies.Length; j++)
+ {
+ if (!convertedMap.TryGetValue(candidate.DependencyList[j], out dependencies[j]))
+ {
+ // We can auto-magically resolve these since we already have their description
+ // This way if the file is only referencing options it does not need to be built with the
+ // --include_imports definition.
+ if (localOptions.IgnoreGoogleProtobuf &&
+ (candidate.DependencyList[j] == "google/protobuf/csharp_options.proto"))
+ {
+ dependencies[j] = CSharpOptions.Descriptor;
+ continue;
+ }
+ if (localOptions.IgnoreGoogleProtobuf &&
+ (candidate.DependencyList[j] == "google/protobuf/descriptor.proto"))
+ {
+ dependencies[j] = DescriptorProtoFile.Descriptor;
+ continue;
+ }
+ foundAllDependencies = false;
+ break;
+ }
+ }
+ if (!foundAllDependencies)
+ {
+ continue;
+ }
+ madeProgress = true;
+ totalConverted++;
+ converted[i] = FileDescriptor.BuildFrom(candidate, dependencies);
+ convertedMap[candidate.Name] = converted[i];
+ }
+ }
+ if (!madeProgress)
+ {
+ StringBuilder remaining = new StringBuilder();
+ for (int i = 0; i < converted.Length; i++)
+ {
+ if (converted[i] == null)
+ {
+ if (remaining.Length != 0)
+ {
+ remaining.Append(", ");
+ }
+ FileDescriptorProto failure = fileList[i];
+ remaining.Append(failure.Name);
+ remaining.Append(":");
+ foreach (string dependency in failure.DependencyList)
+ {
+ if (!convertedMap.ContainsKey(dependency))
+ {
+ remaining.Append(" ");
+ remaining.Append(dependency);
+ }
+ }
+ remaining.Append(";");
+ }
+ }
+ throw new DependencyResolutionException("Unable to resolve all dependencies: " + remaining);
+ }
+ return Lists.AsReadOnly(converted);
+ }
+ }
+}
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