Struct LocalSymbolTable 

pub struct LocalSymbolTable { /* private fields */ }

File-local subroutine symbol table built from a pre-pass scan.

Forward references

Because this is a whole-file pre-pass, subroutines declared after their first call site are recognized correctly. A forward reference like:

builder /pattern/;
sub builder { ... }

will be parsed as a function call with a regex argument.

Implementations

impl LocalSymbolTable

pub fn scan_subs(input: &str) -> Self

Scan Perl source for sub NAME declarations and build a symbol table.

This is a best-effort O(n) pre-pass. It skips line comments (#…) and simple single- and double-quoted string literals so that # sub foo or "sub foo" patterns do not produce false positives. POD sections and heredocs are not specially handled; declarations inside them are a known (harmless) false-positive class.

pub fn is_known_sub(&self, name: &str) -> bool

Return true if name was declared as a subroutine in this file.

pub fn len(&self) -> usize

Return the number of subroutine names recorded.

pub fn is_empty(&self) -> bool

Return true if no subroutines have been recorded.

Trait Implementations

impl Clone for LocalSymbolTable

fn clone(&self) -> LocalSymbolTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LocalSymbolTable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for LocalSymbolTable

fn default() -> LocalSymbolTable

Returns the “default value” for a type.