parsergen-backend-csharp.md

Parser Generator Backend: C#

This backend outputs a parser as C# source code. See parser generator backends for what every generated parser does and scanner generator backend: C# for the scanner side.

--backend-csharp-namespace sets the namespace, which defaults to Parser and has to be the one the scanner was generated into.

Parser.Parse takes an ITokenSource and returns a ParseResult holding the tree and the errors, and can be called again with another scanner. The tree is null when the parse could not be finished. Lexemes are a ReadOnlyMemory<byte> over the source rather than a copy of it.

Example

examples/calculator/csharp/ is a calculator built on this backend. Its parser was generated with:

golr parser \
  --frontend golr \
  --frontend-file-path calculator.golr \
  --backend csharp \
  --backend-csharp-namespace Calculator.Parser \
  --backend-file-path Parser/Parser.cs