Add helper method on results to return `result_ok`

[ldk-c-bindings] / c-bindings-gen / src / blocks.rs

diff --git a/c-bindings-gen/src/blocks.rs b/c-bindings-gen/src/blocks.rs
index e48a98a5c5a14787f489096eabd8d283267d33ec..6e6b897e9c13ce9cd9b21fdda30cbbbf28870a39 100644 (file)
--- a/c-bindings-gen/src/blocks.rs
+++ b/c-bindings-gen/src/blocks.rs
@@ -124,6 +124,12 @@ pub fn write_result_block<W: std::io::Write>(w: &mut W, mangled_container: &str,
        writeln!(w, "\t}}").unwrap();
        writeln!(w, "}}").unwrap();
 
+       writeln!(w, "/// Checks if the given object is currently in the success state").unwrap();
+       writeln!(w, "#[no_mangle]").unwrap();
+       writeln!(w, "pub extern \"C\" fn {}_is_ok(o: &{}) -> bool {{", mangled_container, mangled_container).unwrap();
+       writeln!(w, "\to.result_ok").unwrap();
+       writeln!(w, "}}").unwrap();
+
        writeln!(w, "#[no_mangle]").unwrap();
        writeln!(w, "/// Frees any resources used by the {}.", mangled_container).unwrap();
        writeln!(w, "pub extern \"C\" fn {}_free(_res: {}) {{ }}", mangled_container, mangled_container).unwrap();
@@ -751,4 +757,20 @@ pub fn maybe_write_generics<W: std::io::Write>(w: &mut W, generics: &syn::Generi
        }
 }
 
-
+pub fn maybe_write_lifetime_generics<W: std::io::Write>(w: &mut W, generics: &syn::Generics, types: &TypeResolver) {
+       let mut gen_types = GenericTypes::new(None);
+       assert!(gen_types.learn_generics(generics, types));
+       if generics.params.iter().any(|param| if let syn::GenericParam::Lifetime(_) = param { true } else { false }) {
+               write!(w, "<").unwrap();
+               for (idx, generic) in generics.params.iter().enumerate() {
+                       match generic {
+                               syn::GenericParam::Type(_) => {},
+                               syn::GenericParam::Lifetime(lt) => {
+                                       write!(w, "{}'{}", if idx != 0 { ", " } else { "" }, lt.lifetime.ident).unwrap();
+                               },
+                               _ => unimplemented!(),
+                       }
+               }
+               write!(w, ">").unwrap();
+       }
+}