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preg_match() — internals
Compiler internals for preg_match(): lowering path, type checks, and runtime helpers.
preg_match() — internals
Where it lives
- Signature:
src/builtins/system/preg_match.rs - Lowering:
src/codegen/lower_inst/builtins/regex.rs:28 (lower_preg_match) - Function symbol:
lower_preg_match()
Lowering notes
- Lowers
preg_match(pattern, subject)through the shared regex runtime helper.
Runtime helpers
The following runtime helpers are referenced:
__rt_preg_match__rt_preg_match_capture
Signature summary
function preg_match(string $pattern, string $subject, array $matches = []): intWhat the type checker enforces
- Arity: takes 2–3 arguments (1 optional).
- By-reference parameters:
$matches.
Eval interpreter (magician)
- Declaration:
crates/elephc-magician/src/interpreter/builtins/regex/preg_match.rs(eval_builtin!) - Dispatch hooks:
direct,values - By-reference parameters:
$matches.