54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
//! @brief Example Rust-based BPF program that prints out the parameters passed to it
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#![cfg(not(test))]
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#![no_std]
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mod solana_sdk;
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use solana_sdk::*;
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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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fn process(ka: &mut [SolKeyedAccount], data: &[u8], info: &SolClusterInfo) -> bool {
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sol_log("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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sol_log("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 core 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 = core::str::from_utf8(&sparkle_heart).unwrap();
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sol_log_64(0, 0, 0, 0, result_str.len() as u64);
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sol_log(result_str);
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assert_eq!("💖", 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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sol_log_64(0, 0, s.x, s.y, s.z);
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assert_eq!(s.x + s.y + s.z, 6);
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}
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sol_log("Success");
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true
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}
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