tree-sitter-c-sharp

C# grammar for tree-sitter based upon the Roslyn grammar with changes in order to:

• Deal with differences between the parsing technologies
• Work around some bugs in that grammar
• Handle #if, #else, #elif, #endif blocks
• Support syntax highlighting/parsing of fragments
• Simplify the output tree

Status

Comprehensive supports C# 1 through 11.0 with the following exceptions:

• async, var and await cannot be used as identifiers everywhere they are valid
• Raw string literals (C# 11)

C# 12.0 (under development)

• Alias any type
• Collection expressions
• Default lambda parameters
• Experimental attribute
• Inline arrays
• Interceptors
• Primary constructors
• Ref readonly parameters

References

• Official C# 6 Language Spec provides chapters that formally define the language grammar.
• Roslyn C# language grammar export
• SharpLab (web-based syntax tree playground based on Roslyn)