From: Matt Corallo Date: Mon, 1 Nov 2021 18:35:30 +0000 (+0000) Subject: Separate logic to print `create_ownable_reference` types X-Git-Tag: v0.0.103.0^2~5 X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=aaa4aa00a4d6b70db8ef58f9e90f63ea4abb6ad4;p=ldk-c-bindings Separate logic to print `create_ownable_reference` types These types aren't actually mapped in the same way as all other types, so we really shouldn't be trying to use the same conversion logic for both. --- diff --git a/c-bindings-gen/src/main.rs b/c-bindings-gen/src/main.rs index 1bcc8f1..1976160 100644 --- a/c-bindings-gen/src/main.rs +++ b/c-bindings-gen/src/main.rs @@ -670,7 +670,7 @@ fn writeln_struct<'a, 'b, W: std::io::Write>(w: &mut W, s: &'a syn::ItemStruct, write!(w, "#[no_mangle]\npub extern \"C\" fn {}_get_{}(this_ptr: &{}) -> ", struct_name, $new_name, struct_name).unwrap(); types.write_c_type(w, &ref_type, Some(&gen_types), true); write!(w, " {{\n\tlet mut inner_val = &mut this_ptr.get_native_mut_ref().{};\n\t", $real_name).unwrap(); - let local_var = types.write_to_c_conversion_new_var(w, &format_ident!("inner_val"), &ref_type, Some(&gen_types), true); + let local_var = types.write_to_c_conversion_from_ownable_ref_new_var(w, &format_ident!("inner_val"), &ref_type, Some(&gen_types)); if local_var { write!(w, "\n\t").unwrap(); } types.write_to_c_conversion_inline_prefix(w, &ref_type, Some(&gen_types), true); write!(w, "inner_val").unwrap(); diff --git a/c-bindings-gen/src/types.rs b/c-bindings-gen/src/types.rs index fc832f8..979e951 100644 --- a/c-bindings-gen/src/types.rs +++ b/c-bindings-gen/src/types.rs @@ -1339,7 +1339,11 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { Some(("Vec::new(); for mut item in ", vec![(format!(".drain(..) {{ local_{}.push(", var_name), "item".to_string())], "); }", ContainerPrefixLocation::PerConv)) }, "Slice" => { - Some(("Vec::new(); for item in ", vec![(format!(".iter() {{ local_{}.push(", var_name), "item".to_string())], "); }", ContainerPrefixLocation::PerConv)) + if let Some(syn::Type::Reference(_)) = single_contained { + Some(("Vec::new(); for item in ", vec![(format!(".iter() {{ local_{}.push(", var_name), "(*item)".to_string())], "); }", ContainerPrefixLocation::PerConv)) + } else { + Some(("Vec::new(); for item in ", vec![(format!(".iter() {{ local_{}.push(", var_name), "item".to_string())], "); }", ContainerPrefixLocation::PerConv)) + } }, "Option" => { let contained_struct = if let Some(syn::Type::Path(p)) = single_contained { @@ -2065,7 +2069,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { VP: Fn(&mut W, &syn::Type, Option<&GenericTypes>, bool, bool, bool), VS: Fn(&mut W, &syn::Type, Option<&GenericTypes>, bool, bool, bool)> (&self, w: &mut W, ident: &syn::Ident, var: &str, t: &syn::Type, generics: Option<&GenericTypes>, - mut is_ref: bool, mut ptr_for_ref: bool, to_c: bool, + mut is_ref: bool, mut ptr_for_ref: bool, to_c: bool, from_ownable_ref: bool, path_lookup: &LP, container_lookup: &LC, var_prefix: &VP, var_suffix: &VS) -> bool { macro_rules! convert_container { @@ -2112,7 +2116,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { // If the inner element contains an inner pointer, we will just use that, // avoiding the need to map elements to references. Otherwise we'll need to // do an extra mapping step. - needs_ref_map = !only_contained_has_inner; + needs_ref_map = !only_contained_has_inner && $container_type == "Option"; } else { only_contained_type = Some(arg); only_contained_type_nonref = Some(arg); @@ -2138,7 +2142,8 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { write!(w, "{} {{ ", pfx).unwrap(); let new_var_name = format!("{}_{}", ident, idx); let new_var = self.write_conversion_new_var_intern(w, &format_ident!("{}", new_var_name), - &var_access, conv_ty, generics, contains_slice || (is_ref && ty_has_inner), ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix); + &var_access, conv_ty, generics, contains_slice || (is_ref && ty_has_inner), ptr_for_ref, + to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix); if new_var { write!(w, " ").unwrap(); } if prefix_location == ContainerPrefixLocation::PerConv { @@ -2177,9 +2182,9 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { match generics.resolve_type(t) { syn::Type::Reference(r) => { if let syn::Type::Slice(_) = &*r.elem { - self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, is_ref, ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix) + self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, is_ref, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix) } else { - self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, true, ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix) + self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, true, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix) } }, syn::Type::Path(p) => { @@ -2188,7 +2193,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } let resolved_path = self.resolve_path(&p.path, generics); if let Some(aliased_type) = self.crate_types.type_aliases.get(&resolved_path) { - return self.write_conversion_new_var_intern(w, ident, var, aliased_type, None, is_ref, ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix); + return self.write_conversion_new_var_intern(w, ident, var, aliased_type, None, is_ref, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix); } if self.is_known_container(&resolved_path, is_ref) || self.is_path_transparent_container(&p.path, generics, is_ref) { if let syn::PathArguments::AngleBracketed(args) = &p.path.segments.iter().next().unwrap().arguments { @@ -2225,7 +2230,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { true } else { false } } else if let syn::Type::Reference(ty) = &*s.elem { - let tyref = [&*ty.elem]; + let tyref = if from_ownable_ref || !to_c { [&*ty.elem] } else { [&*s.elem] }; is_ref = true; convert_container!("Slice", 1, || tyref.iter().map(|t| generics.resolve_type(*t))); unimplemented!("convert_container should return true as container_lookup should succeed for slices"); @@ -2266,7 +2271,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { let v_name = format!("orig_{}_{}", ident, idx); let tuple_elem_ident = format_ident!("{}", &v_name); if self.write_conversion_new_var_intern(w, &tuple_elem_ident, &v_name, elem, generics, - false, ptr_for_ref, to_c, + false, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix) { write!(w, " ").unwrap(); // Opaque types with inner pointers shouldn't ever create new stack @@ -2316,8 +2321,8 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } } - pub fn write_to_c_conversion_new_var_inner(&self, w: &mut W, ident: &syn::Ident, var_access: &str, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) -> bool { - self.write_conversion_new_var_intern(w, ident, var_access, t, generics, false, ptr_for_ref, true, + pub fn write_to_c_conversion_new_var_inner(&self, w: &mut W, ident: &syn::Ident, var_access: &str, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool, from_ownable_ref: bool) -> bool { + self.write_conversion_new_var_intern(w, ident, var_access, t, generics, false, ptr_for_ref, true, from_ownable_ref, &|a, b| self.to_c_conversion_new_var_from_path(a, b), &|a, b, c, d, e| self.to_c_conversion_container_new_var(generics, a, b, c, d, e), // We force ptr_for_ref here since we can't generate a ref on one line and use it later @@ -2325,10 +2330,15 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { &|a, b, c, d, e, f| self.write_to_c_conversion_inline_suffix_inner(a, b, c, d, e, f)) } pub fn write_to_c_conversion_new_var(&self, w: &mut W, ident: &syn::Ident, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) -> bool { - self.write_to_c_conversion_new_var_inner(w, ident, &format!("{}", ident), t, generics, ptr_for_ref) + self.write_to_c_conversion_new_var_inner(w, ident, &format!("{}", ident), t, generics, ptr_for_ref, false) + } + /// Prints new-var conversion for an "ownable_ref" type, ie prints conversion for + /// `create_ownable_reference(t)`, not `t` itself. + pub fn write_to_c_conversion_from_ownable_ref_new_var(&self, w: &mut W, ident: &syn::Ident, t: &syn::Type, generics: Option<&GenericTypes>) -> bool { + self.write_to_c_conversion_new_var_inner(w, ident, &format!("{}", ident), t, generics, true, true) } pub fn write_from_c_conversion_new_var(&self, w: &mut W, ident: &syn::Ident, t: &syn::Type, generics: Option<&GenericTypes>) -> bool { - self.write_conversion_new_var_intern(w, ident, &format!("{}", ident), t, generics, false, false, false, + self.write_conversion_new_var_intern(w, ident, &format!("{}", ident), t, generics, false, false, false, false, &|a, b| self.from_c_conversion_new_var_from_path(a, b), &|a, b, c, d, e| self.from_c_conversion_container_new_var(generics, a, b, c, d, e), // We force ptr_for_ref here since we can't generate a ref on one line and use it later