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android / platform / external / rust / crates / pdl-compiler / 9b20adba948939bd8f37392da14b1b8f25efc380
commit9b20adba948939bd8f37392da14b1b8f25efc380[log] [tgz]
authorJames Farrell <[email protected]>Wed Oct 16 16:19:19 2024 +0000
committerJames Farrell <[email protected]>Wed Oct 16 16:19:19 2024 +0000
treeb70029532c7bdeb185bf8359f29b669a7d2835b8
parentcca14cb6b7ddc556ea367f6c736396889ce79b2d [diff]
Add a patch file for scripts/Android.bp.

Bug: http://b/339424309
Test: treehugger
Change-Id: I4c542b88d0b046918663709364299a2c98906aaa
1 file changed
tree: b70029532c7bdeb185bf8359f29b669a7d2835b8
  1. patches/
  2. scripts/
  3. src/
  4. tests/
  5. .cargo_vcs_info.json
  6. .gitignore
  7. Android.bp
  8. Cargo.toml
  9. Cargo.toml.orig
  10. cargo2android_toplevel.bp
  11. cargo_embargo.json
  12. LICENSE
  13. METADATA
  14. MODULE_LICENSE_APACHE2
  15. OWNERS
  16. README.md
README.md

Packet Description Language (PDL)

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PDL is a domain specific language for writing the definition of binary protocol packets. Parsing and validating packets from raw bytes is tedious and error prone in any language. PDL generates memory safe and tailored backends for multiple target languages:

- Rust
- C++
- Python

Historically PDL was developed as part of the Android Bluetooth stack (bluetooth_packetgen) as a way to generate the parser and serializer for Bluetooth packets, and reduce the number of memory safety issues that come with manipulating and validating raw data.

How to use PDL

  1. Write the protocol definition
  2. cargo run my-protocol.pdl --output-format rust > my-protocol.rs

Language specific instructions are provided for all supported backends:

  1. Rust generated code guide
  2. Python generated code guide
  3. C++ generated code guide

Supported Features

Full reference documentation

  • Scalar values
  • Enumerators
  • Arrays
  • Optional fields
  • Nested packets
  • Conditional packet derivation
  • Custom field definitions

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