anchor_generate_cpi_crate_mod/
lib.rs

1//! Generates a crate for cross-program invocations to an Anchor program from a JSON IDL.
2//!
3//! # Usage
4//!
5//! In a new crate, write:
6//!
7//! ```skip
8//! anchor_gen::generate_cpi_crate!("../../examples/govern-cpi/idl.json");
9//!
10//! declare_id!("GjphYQcbP1m3FuDyCTUJf2mUMxKPE3j6feWU1rxvC7Ps");
11//! ```
12//!
13//! This will generate a fully functional Rust CPI client for your IDL.
14//!
15//! More examples can be found in the [examples/](https://github.com/saber-hq/anchor-gen/tree/master/examples) directory.
16
17use syn::{parse_macro_input, LitStr};
18use anchor_idl_mod::GeneratorOptions;
19
20/// Generates an Anchor CPI crate from a JSON file.
21///
22/// # Arguments
23///
24/// * `input` - Path to a JSON IDL relative to the crate's the Cargo.toml.
25#[proc_macro]
26pub fn generate_cpi_crate(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
27    let id_literal = parse_macro_input!(input as LitStr);
28    let opts = GeneratorOptions {
29        idl_path: id_literal.value(),
30        ..Default::default()
31    };
32    opts.to_generator().generate_cpi_interface().into()
33}