is_writable() — internals

is_writable() — internals

Where it lives

• Signature: src/builtins/io/is_writable.rs
• Lowering: src/codegen/lower_inst/builtins/io.rs:5612 (lower_is_writable)
• Function symbol: lower_is_writable()

Lowering notes

• Lowers is_writable(path) through the target-aware runtime access helper.

Runtime helpers

The following runtime helpers are referenced:

• __rt_is_executable
• __rt_is_link
• __rt_is_writable

Signature summary

function is_writable(string $filename): bool

What the type checker enforces

• Arity: takes exactly 1 argument.

Eval interpreter (magician)

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

Cross-references

• User reference for is_writable()