basename() — internals

basename() — internals

Where it lives

• Signature: src/builtins/io/basename.rs
• Lowering: src/codegen/lower_inst/builtins/io.rs:4536 (lower_basename)
• Function symbol: lower_basename()

Lowering notes

• Lowers basename(path, suffix?) through the target-aware runtime helper.

Runtime helpers

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

Signature summary

function basename(string $path, string $suffix = ''): string

What the type checker enforces

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

Cross-references

• User reference for basename()