Adds doxygen support

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lightgbm3"
-version = "1.0.4"
+version = "1.0.5"
 edition = "2021"
 authors = [
   "Dmitry Mottl <dmitry.mottl@gmail.com>",

lightgbm3-sys/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lightgbm3-sys"
-version = "1.0.4"
+version = "1.0.5"
 edition = "2021"
 authors = ["Dmitry Mottl <dmitry.mottl@gmail.com>", "vaaaaanquish <6syun9@gmail.com>"]
 build = "build.rs"
@@ -17,6 +17,7 @@ libc = "0.2.155"
 [build-dependencies]
 cmake = "0.1.50"
 bindgen = "0.69.4"
+doxygen-rs = "0.4.2"
 
 [features]
 openmp = []

lightgbm3-sys/build.rs

@@ -5,6 +5,15 @@ use std::{
     process::Command,
 };
 
+#[derive(Debug)]
+struct DoxygenCallback;
+
+impl bindgen::callbacks::ParseCallbacks for DoxygenCallback {
+    fn process_comment(&self, comment: &str) -> Option<String> {
+        Some(doxygen_rs::transform(comment))
+    }
+}
+
 fn main() {
     let target = env::var("TARGET").unwrap();
     let out_dir = env::var("OUT_DIR").unwrap();
@@ -55,6 +64,7 @@ fn main() {
         .allowlist_file("lightgbm/include/LightGBM/c_api.h")
         .clang_args(&["-x", "c++", "-std=c++11"])
         .clang_arg(format!("-I{}", lgbm_root.join("include").display()))
+        .parse_callbacks(Box::new(DoxygenCallback))
         .generate()
         .expect("Unable to generate bindings");
     let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());