Struct RegexAnalyzer 

pub struct RegexAnalyzer;

Analysis utilities for Perl regex patterns: capture extraction and hover text.

Implementations

impl RegexAnalyzer

pub fn extract_named_captures(pattern: &str) -> Vec<CaptureGroup>

Extract all named capture groups from a Perl regex pattern.

Scans the pattern for (?<name>...) groups and returns them in left-to-right order. Non-capturing groups ((?:...)), lookaheads, and lookbehinds do not increment the capture index. Escaped parentheses (\() are skipped.

Example

use perl_regex::RegexAnalyzer;
let caps = RegexAnalyzer::extract_named_captures("(?<year>\\d{4})-(?<month>\\d{2})");
assert_eq!(caps.len(), 2);
assert_eq!(caps[0].name, "year");
assert_eq!(caps[0].index, 1);

pub fn hover_text_for_regex(pattern: &str, modifiers: &str) -> String

Generate hover text for a Perl regex pattern and its modifiers.

Summarises the named capture groups and explains the meaning of each modifier flag (i, m, s, x, g).

Example

use perl_regex::RegexAnalyzer;
let text = RegexAnalyzer::hover_text_for_regex("(?<id>\\d+)", "i");
assert!(text.contains("id"));
assert!(text.contains("case"));