eval

```rust use cjs::eval;

const X: f64 = eval! { const x = 5; String(x * Math.PI) }; ```

Custom Derive

```rust use cjs::Reflect;

[derive(Debug, Reflect)]

[reflect("reflect_s")]

struct S { foo: String, bar: String }

reflects!{ let out = ["impl ToString for S {"]; out.push("fn tostring(&self) -> String {"); out.push("vec!["); out.push(ctx.fields.map(field => "(&" + field.name + ").to_string()").join(", ")); out.push("].join(" + '"' + " & " + '"' + ")"); out.push("}"); out.push("}"); out.join("\n"); } ```

Prior Work

• https://github.com/fusion-engineering/inline-python
  • https://docs.rs/ct-python/0.5.1/ct_python/
• https://docs.rs/embedjs/0.1.4/embedjs/