no regex dep

Author: Bromeon

godot-bindings/src/godot_version.rs

@@ -9,13 +9,17 @@
 // while all the functions included are used only with `custom-api` and `custom-api-json` features.
 #![cfg_attr(not(feature = "api-custom"), allow(unused_variables, dead_code))]
 
+use crate::GodotVersion;
+
+#[cfg(feature = "api-custom")]
 use std::error::Error;
+#[cfg(feature = "api-custom")]
 use std::str::FromStr;
 
+#[cfg(feature = "api-custom")]
 use regex::{Captures, Regex};
 
-use crate::GodotVersion;
-
+#[cfg(feature = "api-custom")]
 pub fn parse_godot_version(version_str: &str) -> Result<GodotVersion, Box<dyn Error>> {
     // Format of the string emitted by `godot --version`:
     // https://github.com/godot-rust/gdext/issues/118#issuecomment-1465748123
@@ -71,6 +75,7 @@ pub(crate) fn validate_godot_version(godot_version: &GodotVersion) {
 }
 
 /// Extracts and parses a named capture group from a regex match.
+#[cfg(feature = "api-custom")]
 fn cap<T: FromStr>(caps: &Captures, key: &str) -> Result<Option<T>, Box<dyn Error>> {
     caps.name(key)
         .map(|m| m.as_str().parse())