anchor_generate_cpi_interface/
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 anchor_idl::GeneratorOptions;
18use darling::FromMeta;
19use proc_macro::TokenStream;
20use syn::parse_macro_input;
21
22/// Generates an Anchor CPI crate from a JSON file.
23///
24/// # Arguments
25///
26/// * `idl_path` - Path to a JSON IDL relative to the crate's the Cargo.toml.
27///
28/// # Examples
29///
30/// ```
31/// anchor_generate_cpi_interface::generate_cpi_interface!(idl_path = "../../examples/govern-cpi/idl.json");
32/// # fn main() -> Result<()> {
33/// let _my_governor = GovernanceParameters {
34///     quorum_votes: 0,
35///     timelock_delay_seconds: 0,
36///     voting_period: 0,
37///     voting_delay: 0,
38/// };
39/// #   Ok(())
40/// # }
41/// ```
42#[proc_macro]
43pub fn generate_cpi_interface(input: proc_macro::TokenStream) -> TokenStream {
44    let attr_args = parse_macro_input!(input as syn::AttributeArgs);
45    let parsed = match GeneratorOptions::from_list(&attr_args) {
46        Ok(v) => v,
47        Err(e) => {
48            return TokenStream::from(e.write_errors());
49        }
50    };
51    parsed.to_generator().generate_cpi_interface().into()
52}
anchor_generate_cpi_interface/lib.rs

anchor_generate_cpi_interface/
lib.rs
