1 files changed, 28 insertions, 0 deletions
diff --git a/codegen/load_with.rs b/codegen/load_with.rs
new file mode 100644
index 0000000..0e8e672
--- /dev/null
+++ b/codegen/load_with.rs
@@ -0,0 +1,28 @@
+use opengl_registry::command::Command;
+use proc_macro2::TokenStream;
+use quote::{format_ident, quote};
+
+pub fn create_load_with_function(commands: &[Command]) -> TokenStream
+{
+    let command_assignments = commands.iter().map(|command| {
+        let command_name = format_ident!("{}", command.prototype().name());
+
+        let command_name_str = command.prototype().name();
+
+        quote! {
+            functions::#command_name = get_proc_addr(#command_name_str);
+        }
+    });
+
+    quote! {
+        /// Loads OpenGL function pointers using the given function address retriever function.
+        pub fn load_with<GetProcAddrFn>(get_proc_addr: GetProcAddrFn)
+        where
+            GetProcAddrFn: Fn(&str) -> unsafe extern "C" fn(),
+        {
+            unsafe {
+                #(#command_assignments)*
+            }
+        }
+    }
+}