src/VisualStudio/CSharp/Impl/ProjectSystemShim/TempPECompilerService.cs - main - githubmirror/roslyn

src/VisualStudio/CSharp/Impl/ProjectSystemShim/TempPECompilerService.cs
109 строк4 KB
Cyrus Najmabadi
Use raw strings in tests
09 июл 2025, 08:52
09 июл 2025, 08:52f265dce
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#nullable disable

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim.Interop;

namespace Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim;

/// <summary>
/// An implementation a TempPE compiler that is called by the project system.
///
/// This class is free-threaded.
/// </summary>
internal sealed class TempPECompilerService : ICSharpTempPECompilerService
{
    private readonly IMetadataService _metadataService;

    public TempPECompilerService(IMetadataService metadataService)
        => _metadataService = metadataService;

    public int CompileTempPE(string pszOutputFileName, int sourceCount, string[] fileNames, string[] fileContents, int optionCount, string[] optionNames, object[] optionValues)
    {
        var baseDirectory = Path.GetDirectoryName(pszOutputFileName);
        var parsedArguments = ParseCommandLineArguments(baseDirectory, optionNames, optionValues);

        Contract.ThrowIfFalse(fileNames.Length == fileContents.Length);

        var trees = new List<SyntaxTree>(capacity: sourceCount);

        for (var i = 0; i < fileNames.Length; i++)
        {
            var sourceText = SourceText.From(fileContents[i], parsedArguments.Encoding, parsedArguments.ChecksumAlgorithm);
            trees.Add(SyntaxFactory.ParseSyntaxTree(sourceText, parsedArguments.ParseOptions, fileNames[i]));
        }

        // TODO (tomat): Revisit compilation options: app.config, strong name, search paths, etc? (bug #869604)
        // TODO (tomat): move resolver initialization (With* methods below) to CommandLineParser.Parse

        var metadataResolver = new WorkspaceMetadataFileReferenceResolver(
            _metadataService,
            new RelativePathResolver([], baseDirectory: null));

        var compilation = CSharpCompilation.Create(
            Path.GetFileName(pszOutputFileName),
            trees,
            parsedArguments.ResolveMetadataReferences(metadataResolver).Where(m => m is not UnresolvedMetadataReference),
            parsedArguments.CompilationOptions
                .WithAssemblyIdentityComparer(DesktopAssemblyIdentityComparer.Default)
                .WithSourceReferenceResolver(SourceFileResolver.Default)
                .WithXmlReferenceResolver(XmlFileResolver.Default)
                .WithMetadataReferenceResolver(metadataResolver));

        var result = compilation.Emit(pszOutputFileName);

        return result.Success ? VSConstants.S_OK : VSConstants.S_FALSE;
    }

    private static CSharpCommandLineArguments ParseCommandLineArguments(string baseDirectory, string[] optionNames, object[] optionValues)
    {
        Contract.ThrowIfFalse(optionNames.Length == optionValues.Length);

        var arguments = new List<string>();

        for (var i = 0; i < optionNames.Length; i++)
        {
            var optionName = optionNames[i];
            var optionValue = optionValues[i];

            if (optionName == "r")
            {
                // We get a pipe-delimited list of references, so split them back apart
                foreach (var reference in ((string)optionValue).Split(['|'], StringSplitOptions.RemoveEmptyEntries))
                {
                    arguments.Add(string.Format("""
                        /r:"{0}"
                        """, reference));
                }
            }
            else if (optionValue is bool)
            {
                if ((bool)optionValue)
                {
                    arguments.Add($"/{optionName}+");
                }
                else
                {
                    arguments.Add($"/{optionName}-");
                }
            }
            else
            {
                arguments.Add(string.Format("/{0}:{1}", optionName, optionValue));
            }
        }

        return CSharpCommandLineParser.Default.Parse(arguments, baseDirectory, RuntimeEnvironment.GetRuntimeDirectory());
    }
}