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//! A library for generating a message from a sequence of instructions
pub mod legacy;
#[cfg(not(target_arch = "bpf"))]
#[path = ""]
mod non_bpf_modules {
mod sanitized;
mod versions;
pub use {sanitized::*, versions::*};
}
pub use legacy::Message;
#[cfg(not(target_arch = "bpf"))]
pub use non_bpf_modules::*;
/// The length of a message header in bytes
pub const MESSAGE_HEADER_LENGTH: usize = 3;
#[derive(Serialize, Deserialize, Default, Debug, PartialEq, Eq, Clone, AbiExample)]
#[serde(rename_all = "camelCase")]
pub struct MessageHeader {
/// The number of signatures required for this message to be considered valid. The
/// signatures must match the first `num_required_signatures` of `account_keys`.
/// NOTE: Serialization-related changes must be paired with the direct read at sigverify.
pub num_required_signatures: u8,
/// The last num_readonly_signed_accounts of the signed keys are read-only accounts. Programs
/// may process multiple transactions that load read-only accounts within a single PoH entry,
/// but are not permitted to credit or debit lamports or modify account data. Transactions
/// targeting the same read-write account are evaluated sequentially.
pub num_readonly_signed_accounts: u8,
/// The last num_readonly_unsigned_accounts of the unsigned keys are read-only accounts.
pub num_readonly_unsigned_accounts: u8,
}