refactor(pcre): inline Preg into its call sites and drop the crate

Preg had shed everything it owned: after the last few rounds its methods
were one-line forwards to the shim's preg_*(), differing only in a
default argument or a wrapper the caller unwrapped anyway. The 460 call
sites now name the shim function, and shirabe-pcre is gone from the
workspace along with its LICENSE entry.

The forwards expand as they read: isMatch becomes
preg_match2(.., 0).is_some() (is_none() where PHP negates it), isMatch3
and match3 drop the .is_some(), matchAll counts through
preg_match_all2(..).occurrence_count(), and replace4/replace5 spell out
the limit and count arguments preg_replace2 takes. Callbacks are the one
place the shapes differ: preg_replace_callback carries an error out of
the callback, so the fourteen infallible closures wrap their result in
Ok() and expect() it back.

Config::process() is the fifteenth, and it drops the `error` cell it
captured to smuggle a failure past a closure that could only return a
String. The `?` in the closure now carries it, which is what the PHP
does -- a throw from the callback leaves preg_replace_callback at the
failing match rather than running the remaining replacements and
reporting the last error.

The module doc that explained why composer/pcre's exceptions and
*StrictGroups() variants have no counterpart moves to the shim's preg
module, where the functions it describes live.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/crates/shirabe-class-map-generator/src/php_file_cleaner.rs b/crates/shirabe-class-map-generator/src/php_file_cleaner.rs
index 18b051c9..78cee261 100644
--- a/crates/shirabe-class-map-generator/src/php_file_cleaner.rs
+++ b/crates/shirabe-class-map-generator/src/php_file_cleaner.rs
@@ -1,7 +1,7 @@
 //! ref: composer/vendor/composer/class-map-generator/src/PhpFileCleaner.php
 
 use indexmap::IndexMap;
-use shirabe_pcre::{Preg, PregMatches};
+use shirabe_php_shim::{PregMatches, preg_match2};
 use std::sync::Mutex;
 
 #[derive(Debug, Clone)]
@@ -147,7 +147,7 @@ impl PhpFileCleaner {
                         if end <= self.len && self.contents[self.index..end] == entry.name {
                             let offset = if self.index > 0 { self.index - 1 } else { 0 };
                             if let Some(r#match) =
-                                Preg::is_match4(&entry.pattern, &self.contents, offset)
+                                preg_match2(&entry.pattern, &self.contents, offset)
                             {
                                 return clean + r#match.get(0).unwrap_or("");
                             }
@@ -283,6 +283,6 @@ impl PhpFileCleaner {
     }
 
     fn r#match(&self, regex: &str) -> Option<PregMatches<'_>> {
-        Preg::is_match4(regex, &self.contents, self.index)
+        preg_match2(regex, &self.contents, self.index)
     }
 }