preg_match_all() — internals

preg_match_all() — internals

Where it lives

• Signature: src/builtins/system/preg_match_all.rs
• Lowering: src/codegen/lower_inst/builtins/regex.rs:66 (lower_preg_match_all)
• Function symbol: lower_preg_match_all()

Lowering notes

• Lowers preg_match_all(pattern, subject) through the shared regex runtime helper.

Runtime helpers

The following runtime helpers are referenced:

• __rt_preg_match_all
• __rt_preg_replace

Signature summary

function preg_match_all(string $pattern, string $subject): int

What the type checker enforces

• Arity: takes exactly 2 arguments.

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/regex/preg_match_all.rs (eval_builtin!)
• Dispatch hooks: direct, values
• By-reference parameters: $matches.

Cross-references

• User reference for preg_match_all()