is_object() — internals

is_object() — internals

Where it lives

• Signature: src/builtins/types/is_object.rs
• Lowering: src/codegen/lower_inst/builtins.rs:1636 (lower_is_object)
• Function symbol: lower_is_object()

Lowering notes

• Lowers is_object(): true for statically-known objects, or a boxed Mixed/Union value whose
• runtime tag is an object (6).

Runtime helpers

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

Signature summary

function is_object(mixed $value): bool

What the type checker enforces

• Arity: takes exactly 1 argument.

Eval interpreter (magician)

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

Cross-references

• User reference for is_object()