refactor: replace usage of opengl-registry-macros

1 files changed, 54 insertions, 0 deletions

diff --git a/codegen/formatting.rs b/codegen/formatting.rs
new file mode 100644
index 0000000..c480be4
--- /dev/null
+++ b/codegen/formatting.rs
@@ -0,0 +1,54 @@
+use convert_case::{Case, Casing};
+use once_cell::sync::Lazy;
+use regex::{Captures, Regex};
+
+static C_PTR_RE: Lazy<Regex> =
+    Lazy::new(|| Regex::new(r"(const )?([a-zA-Z0-9_]+)\s?\*(.*)").unwrap());
+
+static REST_C_PTR_RE: Lazy<Regex> = Lazy::new(|| Regex::new(r"(const)?\s?\*").unwrap());
+
+pub fn clean_param_name(param_name: &str) -> String
+{
+    match param_name {
+        "ref" => "reference",
+        "type" => "ty",
+        "in" => "inside",
+        "box" => "a_box",
+        name => name,
+    }
+    .to_case(Case::Snake)
+}
+
+pub fn fix_type(ty: &str) -> String
+{
+    let ty = ty.replace("struct", "");
+
+    let ty = c_ptr_to_rust_ptr(&ty);
+
+    ty.replace("void", "std::ffi::c_void")
+}
+
+pub fn c_ptr_to_rust_ptr(c_ptr: &str) -> String
+{
+    C_PTR_RE
+        .replace(c_ptr, |captures: &Captures| {
+            let const_or_mut = captures.get(1).map_or_else(|| "mut", |_| "const");
+
+            let type_name = captures.get(2).unwrap().as_str();
+
+            let rest = captures.get(3).unwrap();
+
+            let rest_ptr_matches = REST_C_PTR_RE.captures_iter(rest.as_str());
+
+            let rest_ptrs = rest_ptr_matches
+                .map(|capts| {
+                    let const_or_mut = capts.get(1).map_or_else(|| "mut", |_| "const");
+
+                    format!("*{const_or_mut} ")
+                })
+                .collect::<Vec<_>>();
+
+            format!("{}*{const_or_mut} {type_name}", rest_ptrs.join(" "))
+        })
+        .to_string()
+}