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array_unshift() — internals
Compiler internals for array_unshift(): lowering path, type checks, and runtime helpers.
array_unshift() — internals
Where it lives
- Signature:
src/builtins/array/array_unshift.rs - Lowering:
src/codegen/lower_inst/builtins/arrays/unshift.rs:23 (lower_array_unshift) - Function symbol:
lower_array_unshift()
Lowering notes
- Lowers
array_unshift()by ensuring uniqueness, prepending one scalar value, and returning count.
Runtime helpers
No direct __rt_* helpers captured — the lowering is inlined or routes through another builtin.
Signature summary
function array_unshift(array $array, ...$values): intWhat the type checker enforces
- Arity: takes exactly 1 argument.
- By-reference parameters:
$array. - Variadic: collects excess arguments into
$values.
Eval interpreter (magician)
- Declaration:
crates/elephc-magician/src/interpreter/builtins/array/array_unshift.rs(eval_builtin!) - Dispatch hooks:
values - By-reference parameters:
$array. - Variadic: collects excess arguments into
$values.