Struct Program 

pub struct Program {
    pub ops: Arc<[Opcode]>,
    pub source: Arc<str>,
    pub id: u64,
    pub is_structural: bool,
    pub ics: Arc<[AtomicU64]>,
}

A compiled, immutable v2 program. Cheap to clone (Arc internals).

Fields

ops: Arc<[Opcode]>

source: Arc<str>

id: u64

is_structural: bool

True when the program contains only structural navigation opcodes (eligible for resolution caching).

ics: Arc<[AtomicU64]>

Inline caches — one AtomicU64 slot per opcode. Populated by Opcode::GetField / Opcode::OptField / Opcode::FieldChain.

Encoding: stored_slot = slot_idx + 1 (0 reserved for “unset”). No Arc-ptr gating — the hit path is get_index(slot) + byte-eq key verify. That lets a single slot survive across different Arc<IndexMap> instances of the same shape, which is the common case for repeated queries over distinct docs and for shape-uniform array iteration reaching the opcode inside a sub-program.

Trait Implementations

impl Clone for Program

fn clone(&self) -> Program

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Program

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.