This is a Roslyn-based tool for C# syntax rewriting with the purpose of source-code desugaring.

There are 2 varieties of rewriter:

• a purely syntactic one, Rewriter, and
• a symbolic one, SymbolicRewriter.

For the rewriting, the former relies on syntactic information only; the latter also relies on symbolic information by means of a SemanticModel.

• BlockifyExpressionBody
• DeanonymizeType
• DecomposeNullConditional
• EmplaceGlobalStatement
• EnsureVisibleConstructor
• ExpandForeach
• ImplementAutoProperty
• ImposeExplicitReturn
• ImposeThisPrefix
• InitializeOutArgument
• ReplicateLocalInitialization
• StoreObjectCreation
• TranslateLinq
• UncoalesceCoalescedNull
• UninterpolateStrings
• UnparameterizeRecordDeclaration

Hint: A "description" of the exact rewrite performed by a given rewriter, you might want to check the tests.

void ApplyRewrite(IRewriter rewriter, SyntaxTree tree) { SyntaxTree tree_P; if (rewriter.IsPurelySyntactic()) { tree_P = ((Rewriter)rewriter).Apply(tree); } else { Compilation compilation = /* ... */ tree_P = ((SymbolicRewriter)rewriter).Apply(tree, compilation.GetSemanticModel(tree)); } }