53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
// file: crates/ksp-interface-lib/src/program_account_meta.rs
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// version: 1
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/// Maximum number of account metas admitted by one passive Program instruction contract.
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pub const MAX_PROGRAM_INSTRUCTION_ACCOUNTS: usize = 255;
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/// Passive account metadata attached to one Program instruction.
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///
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/// Account metas preserve the caller-provided Solana account identity and the
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/// signer/writable flags without applying Program-specific semantics.
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub struct ProgramAccountMeta {
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pubkey: crate::Pubkey,
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is_signer: bool,
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is_writable: bool,
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}
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impl ProgramAccountMeta {
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/// Creates one read-only account meta.
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#[must_use]
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pub const fn readonly(pubkey: crate::Pubkey, is_signer: bool) -> Self {
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return Self { pubkey, is_signer, is_writable: false };
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}
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/// Creates one writable account meta.
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#[must_use]
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pub const fn writable(pubkey: crate::Pubkey, is_signer: bool) -> Self {
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return Self { pubkey, is_signer, is_writable: true };
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}
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/// Returns whether this account must sign the containing instruction.
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#[must_use]
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pub const fn is_signer(&self) -> bool {
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return self.is_signer;
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}
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/// Returns whether this account may be written by the containing instruction.
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#[must_use]
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pub const fn is_writable(&self) -> bool {
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return self.is_writable;
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}
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/// Returns the canonical account address.
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#[must_use]
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pub const fn pubkey(&self) -> &crate::Pubkey {
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return &self.pubkey;
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}
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}
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#[cfg(test)]
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#[path = "../unit_tests/program_account_meta.rs"]
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mod tests;
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