70 lines
1.7 KiB
Rust
70 lines
1.7 KiB
Rust
//! @brief Example Rust-based BPF program that prints out the parameters passed to it
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#![allow(unreachable_code)]
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extern crate solana_sdk_bpf_utils;
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use solana_sdk_bpf_utils::entrypoint::*;
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use solana_sdk_bpf_utils::log::*;
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use solana_sdk_bpf_utils::{entrypoint, info};
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#[derive(Debug, PartialEq)]
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struct SStruct {
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x: u64,
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y: u64,
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z: u64,
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}
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#[inline(never)]
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fn return_sstruct() -> SStruct {
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SStruct { x: 1, y: 2, z: 3 }
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}
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entrypoint!(process_instruction);
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fn process_instruction(ka: &mut [SolKeyedAccount], info: &SolClusterInfo, data: &[u8]) -> bool {
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info!("Program identifier:");
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sol_log_key(&info.program_id);
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// Log the provided account keys and instruction input data. In the case of
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// the no-op program, no account keys or input data are expected but real
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// programs will have specific requirements so they can do their work.
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info!("Account keys and instruction input data:");
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sol_log_params(ka, data);
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{
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// Test - use std methods, unwrap
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// valid bytes, in a stack-allocated array
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let sparkle_heart = [240, 159, 146, 150];
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let result_str = std::str::from_utf8(&sparkle_heart).unwrap();
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assert_eq!(4, result_str.len());
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assert_eq!("💖", result_str);
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info!(result_str);
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}
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{
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// Test - struct return
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let s = return_sstruct();
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assert_eq!(s.x + s.y + s.z, 6);
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}
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{
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// Test - arch config
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#[cfg(not(target_arch = "bpf"))]
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panic!();
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}
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info!("Success");
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true
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_return_sstruct() {
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assert_eq!(SStruct { x: 1, y: 2, z: 3 }, return_sstruct());
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}
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}
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