← All docs
constant() — internals
Compiler internals for constant(): lowering path, type checks, and runtime helpers.
constant() — internals
Where it lives
- Signature:
src/builtins/system/constant.rs - Lowering:
src/builtins/semantics.rs:639 (lower_registry_call) - Function symbol:
lower_registry_call()
Lowering notes
- Uses the
eir_primitivestrategy from the single-source builtin descriptor. - Emits backend-neutral EIR primitives or a small EIR graph through
BuiltinLoweringContext.
Semantic descriptor
- Target strategy:
eir_primitive - Validation:
checker_hook - Result type source:
checked - Result ownership:
non_heap - Effects:
static (1 declared effects) - Requirements:
static (0 requirements) - Callable policy:
static_only - Target support:
macos-aarch64,ios-arm64,ios-sim-arm64,linux-aarch64,linux-x86_64
EIR and runtime boundary
- Typed EIR target: descriptor-emitted EIR primitives or graph; no opaque builtin call remains.
Signature summary
function constant(string $name): mixedWhat the type checker enforces
- Arity: takes exactly 1 argument.
Eval interpreter (magician)
- Declaration:
crates/elephc-magician/src/interpreter/builtins/core/constant.rs(eval_builtin!) - Execution: Magician interpreter adapter.
- Adapter reason:
runtime-state-or-resource. - Dispatch hooks:
direct,values