icydb-core 0.213.37

IcyDB — A schema-first typed query engine and persistence runtime for Internet Computer canisters
Documentation 
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//! Module: traits
//!
//! Responsibility: foundational kind, field metadata, projection, and wrapper
//! contracts awaiting narrower domain ownership.
//! Does not own: entity composition, key taxonomy, runtime value conversion,
//! visitor traversal, executor policy, or public facade DTO behavior.
//! Boundary: remaining reusable contracts consumed throughout `icydb-core`.

// ============================================================================
// FOUNDATIONAL KINDS
// ============================================================================
//
// These traits define *where* something lives in the system,
// not what data it contains.
//

///
/// Path
/// Fully-qualified schema path.
///

pub trait Path {
    const PATH: &'static str;
}

///
/// Kind
/// Marker for all schema/runtime nodes.
///

pub trait Kind: Path + 'static {}
impl<T> Kind for T where T: Path + 'static {}

///
/// CanisterKind
/// Marker for canister namespaces
///

pub trait CanisterKind: Kind {
    /// Stable memory slot used for commit marker storage.
    const COMMIT_MEMORY_ID: u8;

    /// Durable stable-memory allocation key for commit marker storage.
    const COMMIT_STABLE_KEY: &'static str;

    /// Stable memory slot used only for integrity-inspection progress.
    const INTEGRITY_PROGRESS_MEMORY_ID: u8;

    /// Durable stable-memory allocation key for integrity-inspection progress.
    const INTEGRITY_PROGRESS_STABLE_KEY: &'static str;
}

///
/// StoreKind
/// Marker for data stores bound to a canister
///

pub trait StoreKind: Kind {
    type Canister: CanisterKind;
}

/// ============================================================================
/// MISC HELPERS
/// ============================================================================

///
/// Inner
///
/// For newtypes to expose their innermost value.
///

pub trait Inner<T> {
    fn inner(&self) -> &T;
    fn into_inner(self) -> T;
}

///
/// Repr
///
/// Internal representation boundary for scalar wrapper types.
///

pub trait Repr {
    type Inner;

    fn repr(&self) -> Self::Inner;
    fn from_repr(inner: Self::Inner) -> Self;
}