Feature: GObject support

Cargo.toml

@@ -17,6 +17,7 @@ rust-version = "1.74"
 exclude = [
   "tests/profile.rs", # Test relies in a sub-crate, see https://github.com/rust-lang/cargo/issues/9017
 ]
+default-run = "cbindgen"
 
 [dependencies]
 clap = { version = "4.3", optional = true }
@@ -42,13 +43,20 @@ pretty_assertions = "1.4.0"
 [features]
 default =  ["clap"]
 unstable_ir = []
+gobject = []
 
 [[bin]]
 name = "cbindgen"
 path = "src/main.rs"
 doc = false
 required-features = ["clap"]
 
+[[bin]]
+name = "gbindgen"
+path = "src/gmain.rs"
+doc = false
+required-features = ["clap", "gobject"]
+
 [lib]
 name = "cbindgen"
 path = "src/lib.rs"

src/bindgen/bindings.rs

@@ -13,7 +13,8 @@ use std::rc::Rc;
 
 use crate::bindgen::config::{Config, Language};
 use crate::bindgen::ir::{
-    Constant, Function, ItemContainer, ItemMap, Path as BindgenPath, Static, Struct, Type, Typedef,
+    Constant, Function, GObject, ItemContainer, ItemMap, Path as BindgenPath, Static, Struct, Type,
+    Typedef,
 };
 use crate::bindgen::language_backend::{
     CLikeLanguageBackend, CythonLanguageBackend, LanguageBackend,
@@ -32,6 +33,7 @@ pub struct Bindings {
     pub constants: Vec<Constant>,
     pub items: Vec<ItemContainer>,
     pub functions: Vec<Function>,
+    pub gobjects: Vec<GObject>,
     source_files: Vec<path::PathBuf>,
     /// Bindings are generated by a recursive call to cbindgen
     /// and shouldn't do anything when written anywhere.
@@ -52,6 +54,7 @@ impl Bindings {
         source_files: Vec<path::PathBuf>,
         noop: bool,
         package_version: String,
+        gobjects: Vec<GObject>,
     ) -> Bindings {
         Bindings {
             config,
@@ -65,6 +68,7 @@ impl Bindings {
             source_files,
             noop,
             package_version,
+            gobjects,
         }
     }
 

src/bindgen/builder.rs

@@ -6,7 +6,7 @@ use std::path;
 
 use crate::bindgen::bindings::Bindings;
 use crate::bindgen::cargo::Cargo;
-use crate::bindgen::config::{Braces, Config, Language, LineEndingStyle, Profile, Style};
+use crate::bindgen::config::{Braces, Config, Language, LineEndingStyle, Profile, RenameRule, Style};
 use crate::bindgen::error::Error;
 use crate::bindgen::library::Library;
 use crate::bindgen::parser::{self, Parse};
@@ -155,6 +155,15 @@ impl Builder {
         self
     }
 
+    #[allow(unused)]
+    pub fn with_gobject(mut self, gobject: bool) -> Builder {
+        self.config.gobject = gobject;
+        self.config.cpp_compat = true;
+        self.config.enumeration.rename_variants = RenameRule::QualifiedScreamingSnakeCase;
+        self.config.language = Language::C;
+        self
+    }
+
     #[allow(unused)]
     pub fn with_style(mut self, style: Style) -> Builder {
         self.config.style = style;
@@ -367,13 +376,14 @@ impl Builder {
                 Default::default(),
                 true,
                 String::new(),
+                Vec::new(),
             ));
         }
 
         let mut result = Parse::new();
 
         if self.std_types {
-            result.add_std_types();
+            result.add_std_types(&self.config);
         }
 
         for x in &self.srcs {
@@ -412,6 +422,7 @@ impl Builder {
             result.functions,
             result.source_files,
             result.package_version,
+            result.gobjects,
         )
         .generate()
     }

src/bindgen/cdecl.rs

@@ -199,7 +199,7 @@ impl CDecl {
             write!(out, "{} ", self.type_qualifers);
         }
 
-        if config.language != Language::Cython {
+        if config.language != Language::Cython && !config.gobject {
             if let Some(ref ctype) = self.type_ctype {
                 write!(out, "{} ", ctype.to_str());
             }

src/bindgen/config.rs

@@ -1032,6 +1032,8 @@ pub struct Config {
     /// and creating a new InternalConfig struct would require more breaking
     /// changes to our public API.
     pub config_path: Option<StdPathBuf>,
+    /// Enable GObject generation
+    pub gobject: bool,
 }
 
 impl Default for Config {
@@ -1076,6 +1078,7 @@ impl Default for Config {
             only_target_dependencies: false,
             cython: CythonConfig::default(),
             config_path: None,
+            gobject: false,
         }
     }
 }
@@ -1109,6 +1112,7 @@ impl Config {
         }
     }
 
+    #[allow(unused)]
     pub fn from_file<P: AsRef<StdPath>>(file_name: P) -> Result<Config, String> {
         let config_text = fs::read_to_string(file_name.as_ref()).map_err(|_| {
             format!(
@@ -1123,6 +1127,7 @@ impl Config {
         Ok(config)
     }
 
+    #[allow(unused)]
     pub fn from_root_or_default<P: AsRef<StdPath>>(root: P) -> Config {
         let c = root.as_ref().join("cbindgen.toml");