Rust Codegen aims to help you generate Rust code programmatically with a simple builder API.
To use rust-codegen, add the following to your Cargo.toml file:
toml
[dependencies]
rust-codegen
While usage can vary based on what you need, a basic flow is creating a Scope and then adding what you need onto it. Below is a simple example of creating a struct with a couple of fields.
```rust use rust_codegen::Scope;
// A Scope is the root of the builder. Everything should be added on to it.
let mut scope = Scope::new();
// Creates a new struct named Foo that derives from Debug and have two fields.
scope.new_struct("Foo")
.derive("Debug")
.field("one", "usize")
.field("two", "String");
// Once turned into a string, the above looks like: // #[derive(Debug)] // struct Foo { // one: usize, // two: String, // } println!("{}", scope.to_string()); ```
Make sure to check out the documentation for all of the available features with examples.
This was originally a fork of carllerche's codegen repo with some updates. However, due to the amount of updates and the fact that I needed to publish it on crates.io for other projects, I made it its own thing.
1) Create a Scope instance.
2) Use the builder API to add elements to the scope.
3) Call Scope::to_string() to get the generated code.
For example:
Note: You should not rely on the formatted output as it's very basic. You should instead run the generated code through rustfmt.