ftell() — internals

ftell() — internals

Where it lives

• Signature: src/builtins/io/ftell.rs
• Lowering: src/codegen/lower_inst/builtins/io.rs:3129 (lower_ftell)
• Function symbol: lower_ftell()

Lowering notes

• Lowers ftell(stream) as lseek(fd, 0, SEEK_CUR).

Runtime helpers

The following runtime helpers are referenced:

• __rt_user_wrapper_ftell

Signature summary

function ftell(resource $stream): int

What the type checker enforces

• Arity: takes exactly 1 argument.

Eval interpreter (magician)

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

Cross-references

• User reference for ftell()