52 lines
1.5 KiB
Rust
52 lines
1.5 KiB
Rust
//! This account contains the serialized transaction instructions
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//!
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use crate::instruction::Instruction;
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use crate::sanitize::SanitizeError;
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use crate::sysvar::Sysvar;
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pub type Instructions = Vec<Instruction>;
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crate::declare_sysvar_id!("instructions1111111111111111111111111111111", Instructions);
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impl Sysvar for Instructions {}
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#[cfg(not(feature = "program"))]
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use crate::clock::Epoch;
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#[cfg(not(feature = "program"))]
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use crate::genesis_config::ClusterType;
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#[cfg(not(feature = "program"))]
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pub fn is_enabled(_epoch: Epoch, cluster_type: ClusterType) -> bool {
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cluster_type == ClusterType::Development
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}
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pub fn get_current_instruction(data: &[u8]) -> u16 {
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let mut instr_fixed_data = [0u8; 2];
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let len = data.len();
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instr_fixed_data.copy_from_slice(&data[len - 2..len]);
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u16::from_le_bytes(instr_fixed_data)
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}
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pub fn store_current_instruction(data: &mut [u8], instruction_index: u16) {
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let last_index = data.len() - 2;
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data[last_index..last_index + 2].copy_from_slice(&instruction_index.to_le_bytes());
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}
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pub fn get_instruction(index: usize, data: &[u8]) -> Result<Instruction, SanitizeError> {
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solana_sdk::message::Message::deserialize_instruction(index, data)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_get_store_instruction() {
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let mut data = [4u8; 10];
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store_current_instruction(&mut data, 3);
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assert_eq!(get_current_instruction(&data), 3);
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assert_eq!([4u8; 8], data[0..8]);
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}
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}
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