rewind() — internals

rewind() — internals

Where it lives

• Signature: src/builtins/io/rewind.rs
• Lowering: src/codegen/lower_inst/builtins/io.rs:3192 (lower_rewind)
• Function symbol: lower_rewind()

Lowering notes

• Lowers rewind(stream) as lseek(fd, 0, SEEK_SET) and clears EOF state on success.

Runtime helpers

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

Signature summary

function rewind(resource $stream): bool

What the type checker enforces

• Arity: takes exactly 1 argument.

Eval interpreter (magician)

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

Cross-references

• User reference for rewind()