interface_exists() — internals

interface_exists() — internals

Where it lives

• Signature: src/builtins/callables/interface_exists.rs
• Lowering: src/codegen/lower_inst/builtins.rs:585 (lower_class_like_exists)
• Function symbol: lower_class_like_exists()

Lowering notes

• Lowers AOT class/interface/enum existence checks for literal or dynamic string names.

Runtime helpers

No direct __rt_* helpers captured — the lowering is inlined or routes through another builtin.

Signature summary

function interface_exists(string $interface, bool $autoload = true): bool

What the type checker enforces

• Arity: takes 1–2 arguments (1 optional).

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/symbols/interface_exists.rs (eval_builtin!)
• Dispatch hooks: direct, values

Cross-references

• User reference for interface_exists()