tree-sitter-systemverilog

Full SystemVerilog IEEE 1800-2023 grammar for tree-sitter.

Differences with tree-sitter-verilog

Pros

• Full implementation of the latest SystemVerilog standard (IEEE 1800-2023)
• Robust and reliable: sv-tests results
• Actively maintained
• Implements node fields
• Supports parsing of code snippets (e.g., always block outside of a module)
• Basic preprocessing capabilities
• Thoroughly tested (~3000 tests) including:
  • UVM 2.0
  • sv-tests
  • cva6
  • pulp_axi
  • basejump_stl
  • ucontroller
• Currently used by:
  • Emacs verilog-ts-mode
  • nvim systemverilog plugin
  • mergiraf

Cons

• Generated parser size is larger (~60MB vs ~45MB)
  • Generation of the compiled grammar takes longer (only needs to be done once)

References

• https://en.wikipedia.org/wiki/Verilog
• http://tree-sitter.github.io/tree-sitter/creating-parsers