Crate ruststep_derive

Procedural macros for second step code generation

┌────────────────┐
│ EXPRESS schema │
└──┬─────────────┘
   │ esprc
┌──▼─────────────────┐
│ Abstract Rust code │
└──┬─────────────────┘
   │ ruststep-derive
┌──▼───────────────┐
│ Actual Rust code │
└──────────────────┘

Design

• espr::codegen::rust generates Rust code with proc-macros defined in this crate.
• This crate does not depends on espr explicitly.

Macros

• as_holder
  Get Holder struct identifier from ENTITY struct identifier

Derive Macros

• Deserialize
  Generate impl Deserialize for entity structs
• Holder
  Generates Holder struct and related implementation for each ENTITY struct
• TableInit
  Derive TableInit for tables