stream_copy_to_stream() — internals

stream_copy_to_stream() — internals

Where it lives

• Signature: src/builtins/io/stream_copy_to_stream.rs
• Lowering: src/codegen/lower_inst/builtins/io.rs:1358 (lower_stream_copy_to_stream)
• Function symbol: lower_stream_copy_to_stream()

Lowering notes

• Lowers stream_copy_to_stream(from, to, length?, offset?) through wrapper-aware read/write loops.

Runtime helpers

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

Signature summary

function stream_copy_to_stream(resource $from, resource $to, int $length = null, int $offset = -1): mixed

What the type checker enforces

• Arity: takes 2–4 arguments (2 optional).

Eval interpreter (magician)

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

Cross-references

• User reference for stream_copy_to_stream()