public override void SetLanguageLevel(IPsiModule psiModule, CSharpLanguageLevel languageLevel) { throw new InvalidOperationException("Language level cannot be set for a T4 module."); }
private void InitLanguageLevelSettings(IProject project, SettingsStorageMountPoint mountPoint) { if (!project.IsProjectCompiledByUnity()) { return; // https://github.com/JetBrains/resharper-unity/issues/150 } // Make sure ReSharper doesn't suggest code changes that won't compile in Unity // due to mismatched C# language levels (e.g. C#6 "elvis" operator) // // * Unity prior to 5.5 uses an old mono compiler that only supports C# 4 // * Unity 5.5 and later adds C# 6 support as an option. This is enabled by setting // the API compatibility level to NET_4_6 // * The CSharp60Support plugin replaces the compiler with either C# 6 or C# 7.0 // It can be recognised by a folder called `CSharp60Support` or `CSharp70Support` // in the root of the project // (https://bitbucket.org/alexzzzz/unity-c-5.0-and-6.0-integration) // // Scenarios: // * No VSTU installed (including Unity 5.5) // .csproj has NO `LangVersion`. `TargetFrameworkVersion` will be `v3.5` // * Early versions of VSTU // .csproj has NO `LangVersion`. `TargetFrameworkVersion` will be `v3.5` // * Later versions of VSTU // `LangVersion` is correctly set to "4". `TargetFrameworkVersion` will be `v3.5` // * VSTU for 5.5 // `LangVersion` is set to "default". `TargetFrameworkVersion` will be `v3.5` or `v4.6` // Note that "default" for VS"15" or Rider will be C# 7.0! // * Unity3dRider is installed // Uses Unity's own generation and adds correct `LangVersion` // `TargetFrameworkVersion` will be `v3.5` or `v4.6` // * CSharp60Support is installed // .csproj has NO `LangVersion` // `TargetFrameworkVersion` is NOT accurate (support for C# 6 is not dependent on/trigger by .net 4.6) // Look for `CSharp60Support` or `CSharp70Support` folders // // Actions: // If `LangVersion` is missing or "default" // then override based on `TargetFrameworkVersion` or presence of `CSharp60Support`/`CSharp70Support` // else do nothing // // Notes: // * Unity and VSTU have two separate .csproj routines. VSTU adds extra references, // the VSTU project flavour GUID and imports UnityVs.targets, which disables the // `GenerateTargetFrameworkMonikerAttribute` target // * CSharp60Support post-processes the .csproj file directly if VSTU is not installed. // If it is installed, it registers a delegate with `ProjectFilesGenerator.ProjectFileGeneration` // and removes it before it's written to disk // * `LangVersion` can be conditionally specified, which makes checking for "default" awkward // * If Unity3dRider + CSharp60Support are both installed, last write wins // Order of post-processing is non-deterministic, so Rider's LangVersion might be removed // * Unity3dRider can set `TargetFrameworkVersion` to `v4.5` on non-Windows machines to fix // an issue resolving System.Linq var languageLevel = CSharpLanguageLevel.Default; if (IsLangVersionMissing(project) || IsLangVersionDefault(project)) { const CSharpLanguageLevel csharp70 = CSharpLanguageLevel.Experimental; // Support for https://bitbucket.org/alexzzzz/unity-c-5.0-and-6.0-integration // See also https://github.com/JetBrains/resharper-unity/issues/50#issuecomment-257611218 if (project.Location.CombineWithShortName("CSharp70Support").ExistsDirectory) { languageLevel = csharp70; } else if (project.Location.CombineWithShortName("CSharp60Support").ExistsDirectory) { languageLevel = CSharpLanguageLevel.CSharp60; } else { languageLevel = IsTargetFrameworkAtLeast46(project) ? CSharpLanguageLevel.CSharp60 : CSharpLanguageLevel.CSharp40; } } SetValue(mountPoint, (CSharpLanguageProjectSettings s) => s.LanguageLevel, languageLevel); }
public override bool CanSetCompilerLanguageLevel(IPsiModule psiModule, CSharpLanguageLevel languageLevel) => false;