lead_lang_macros 2025.6.0

• The variables are only valid till the function execution.
• Storage of LeadLang variable data (except the moved ones) requires cloning.
• You shouldn't store the mutable or immutable reference of a variable.

Got to define function

Simple LeadLang Package

use interpreter::{generate, module, pkg_name};
use lead_lang_macros::{define, methods};

use interpreter::BufValue;

module! {
  Module1,
  pkg_name! { "Module" },
  methods! {
    foo
  }
}

generate! {
  Module1
}

#[define((
  desc: "Prints a variable",
  notes: Some("Optional Note"),
  params: [
   // "my-custom-regex, see example below",
   r"\$[a-z0-9_]*" // This is a regex of a lead variable
  ],
  returns: Some("%null"), // %null means that it returns nothing
  usage: [
   (
    desc: "Prints $hello",
    code: "print $hello"
   )
  ]
  root: Some("MyNewRT"), // This is a method on a RuntimeValue
))]
fn foo(var: &BufValue) {
  println!("{}", var.display());
}