preg_replace_callback() — internals

preg_replace_callback() — internals

Where it lives

• Signature: src/builtins/callables/preg_replace_callback.rs
• Lowering: src/codegen/lower_inst/builtins/regex.rs:101 (lower_preg_replace_callback)
• Function symbol: lower_preg_replace_callback()

Lowering notes

• Lowers preg_replace_callback(pattern, callback, subject) through supported direct callbacks.

Runtime helpers

The following runtime helpers are referenced:

• __rt_preg_replace_callback

Signature summary

function preg_replace_callback(string $pattern, callable $callback, string $subject): string

What the type checker enforces

• Arity: takes exactly 3 arguments.

Eval interpreter (magician)

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

Cross-references

• User reference for preg_replace_callback()