Struct Cv 

pub struct Cv(/* private fields */);

Non-null pointer to a Perl CV. Same ABI as *mut CV.

Implementations

impl Cv

pub unsafe fn from_raw_unchecked(p: *mut CV) -> Self

Wrap a raw *mut CV without checking for null.

Safety

Caller must guarantee p is non-null and points to a valid CV for at least the lifetime of the resulting Cv.

pub fn from_raw(p: *mut CV) -> Option<Self>

Wrap a raw *mut CV, returning None on null input.

pub fn from_coderef(sv: *mut SV) -> Option<Cv>

Dereference a Perl-level coderef SV (\&sub, sub {...}) into its CV. Returns None when sv is null, not a reference, or references something other than a CODE value.

pub fn as_ptr(&self) -> *mut CV

Raw *mut CV for FFI calls.

pub fn is_xsub(&self) -> bool

True when this CV is an XSUB (C-implemented). XSUBs have no OP tree; root / start / padlist return null for them.

pub fn root(&self) -> *const OP

Root of the CV’s OP tree (CvROOT), or null for XSUBs.

pub fn start(&self) -> *const OP

First OP in execution order (CvSTART), or null for XSUBs.

pub fn padlist(&self) -> *const PADLIST

The CV’s PADLIST (lexical scratchpad), or null for XSUBs.

pub fn file(&self) -> Option<String>

Source file the sub was compiled from (CvFILE); "(eval N)" for string-eval’d subs.

pub fn proto(&self) -> Option<String>

The sub’s prototype string (CvPROTO), if any. A CV stores its prototype in its own PV slot, so this is SvPOK + SvPVX_const/SvCUR on the CV itself.

Trait Implementations

impl Clone for Cv

fn clone(&self) -> Cv

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Cv