// *** Per-Type Printing Logic ***
// *******************************
-macro_rules! walk_supertraits { ($t: expr, $types: expr, ($( $pat: pat => $e: expr),*) ) => { {
+macro_rules! walk_supertraits { ($t: expr, $types: expr, ($( $($pat: pat)|* => $e: expr),*) ) => { {
if $t.colon_token.is_some() {
for st in $t.supertraits.iter() {
match st {
if let Some(types) = types_opt {
if let Some(path) = types.maybe_resolve_path(&supertrait.path, None) {
match (&path as &str, &supertrait.path.segments.iter().last().unwrap().ident) {
- $( $pat => $e, )*
+ $( $($pat)|* => $e, )*
}
continue;
}
}
if let Some(ident) = supertrait.path.get_ident() {
match (&format!("{}", ident) as &str, &ident) {
- $( $pat => $e, )*
+ $( $($pat)|* => $e, )*
}
} else if types_opt.is_some() {
panic!("Supertrait unresolvable and not single-ident");
/// a concrete Deref to the Rust trait.
fn writeln_trait<'a, 'b, W: std::io::Write>(w: &mut W, t: &'a syn::ItemTrait, types: &mut TypeResolver<'b, 'a>, extra_headers: &mut File, cpp_headers: &mut File) {
let trait_name = format!("{}", t.ident);
+ let implementable;
match export_status(&t.attrs) {
- ExportStatus::Export => {},
+ ExportStatus::Export => { implementable = true; }
+ ExportStatus::NotImplementable => { implementable = false; },
ExportStatus::NoExport|ExportStatus::TestOnly => return,
}
writeln_docs(w, &t.attrs, "");
writeln!(w, "\t/// An opaque pointer which is passed to your function implementations as an argument.").unwrap();
writeln!(w, "\t/// This has no meaning in the LDK, and can be NULL or any other value.").unwrap();
writeln!(w, "\tpub this_arg: *mut c_void,").unwrap();
- let mut generated_fields = Vec::new(); // Every field's (name, is_clonable) except this_arg, used in Clone generation
+ // We store every field's (name, Option<clone_fn>, docs) except this_arg, used in Clone generation
+ // docs is only set if its a function which should be callable on the object itself in C++
+ let mut generated_fields = Vec::new();
for item in t.items.iter() {
match item {
&syn::TraitItem::Method(ref m) => {
},
ExportStatus::Export => {},
ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if m.default.is_some() { unimplemented!(); }
let mut meth_gen_types = gen_types.push_ctx();
assert!(meth_gen_types.learn_generics(&m.sig.generics, types));
- writeln_docs(w, &m.attrs, "\t");
+ writeln_fn_docs(w, &m.attrs, "\t", types, Some(&meth_gen_types), m.sig.inputs.iter(), &m.sig.output);
if let syn::ReturnType::Type(_, rtype) = &m.sig.output {
if let syn::Type::Reference(r) = &**rtype {
// happen) as well as provide an Option<>al function pointer which is
// called when the trait method is called which allows updating on the fly.
write!(w, "\tpub {}: ", m.sig.ident).unwrap();
- generated_fields.push((format!("{}", m.sig.ident), true));
+ generated_fields.push((format!("{}", m.sig.ident), None, None));
types.write_c_type(w, &*r.elem, Some(&meth_gen_types), false);
writeln!(w, ",").unwrap();
writeln!(w, "\t/// Fill in the {} field as a reference to it will be given to Rust after this returns", m.sig.ident).unwrap();
writeln!(w, "\t/// Note that this takes a pointer to this object, not the this_ptr like other methods do").unwrap();
writeln!(w, "\t/// This function pointer may be NULL if {} is filled in when this object is created and never needs updating.", m.sig.ident).unwrap();
writeln!(w, "\tpub set_{}: Option<extern \"C\" fn(&{})>,", m.sig.ident, trait_name).unwrap();
- generated_fields.push((format!("set_{}", m.sig.ident), true));
+ generated_fields.push((format!("set_{}", m.sig.ident), None, None));
// Note that cbindgen will now generate
- // typedef struct Thing {..., set_thing: (const Thing*), ...} Thing;
+ // typedef struct Thing {..., set_thing: (const struct Thing*), ...} Thing;
// which does not compile since Thing is not defined before it is used.
writeln!(extra_headers, "struct LDK{};", trait_name).unwrap();
- writeln!(extra_headers, "typedef struct LDK{} LDK{};", trait_name, trait_name).unwrap();
continue;
}
// Sadly, this currently doesn't do what we want, but it should be easy to get
writeln!(w, "\t#[must_use]").unwrap();
}
+ let mut cpp_docs = Vec::new();
+ writeln_fn_docs(&mut cpp_docs, &m.attrs, "\t * ", types, Some(&meth_gen_types), m.sig.inputs.iter(), &m.sig.output);
+ let docs_string = "\t/**\n".to_owned() + &String::from_utf8(cpp_docs).unwrap().replace("///", "") + "\t */\n";
+
write!(w, "\tpub {}: extern \"C\" fn (", m.sig.ident).unwrap();
- generated_fields.push((format!("{}", m.sig.ident), true));
+ generated_fields.push((format!("{}", m.sig.ident), None, Some(docs_string)));
write_method_params(w, &m.sig, "c_void", types, Some(&meth_gen_types), true, false);
writeln!(w, ",").unwrap();
},
}
}
// Add functions which may be required for supertrait implementations.
- let mut requires_clone = false;
- walk_supertraits!(t, Some(&types), (
- ("Clone", _) => requires_clone = true,
- (_, _) => {}
- ) );
walk_supertraits!(t, Some(&types), (
("Clone", _) => {
- writeln!(w, "\t/// Creates a copy of the object pointed to by this_arg, for a copy of this {}.", trait_name).unwrap();
- writeln!(w, "\t/// Note that the ultimate copy of the {} will have all function pointers the same as the original.", trait_name).unwrap();
- writeln!(w, "\t/// May be NULL if no action needs to be taken, the this_arg pointer will be copied into the new {}.", trait_name).unwrap();
- writeln!(w, "\tpub clone: Option<extern \"C\" fn (this_arg: *const c_void) -> *mut c_void>,").unwrap();
- generated_fields.push(("clone".to_owned(), true));
+ writeln!(w, "\t/// Called, if set, after this {} has been cloned into a duplicate object.", trait_name).unwrap();
+ writeln!(w, "\t/// The new {} is provided, and should be mutated as needed to perform a", trait_name).unwrap();
+ writeln!(w, "\t/// deep copy of the object pointed to by this_arg or avoid any double-freeing.").unwrap();
+ writeln!(w, "\tpub cloned: Option<extern \"C\" fn (new_{}: &mut {})>,", trait_name, trait_name).unwrap();
+ generated_fields.push(("cloned".to_owned(), None, None));
},
- ("std::cmp::Eq", _) => {
- writeln!(w, "\t/// Checks if two objects are equal given this object's this_arg pointer and another object.").unwrap();
+ ("std::cmp::Eq", _)|("core::cmp::Eq", _) => {
+ let eq_docs = "Checks if two objects are equal given this object's this_arg pointer and another object.";
+ writeln!(w, "\t/// {}", eq_docs).unwrap();
writeln!(w, "\tpub eq: extern \"C\" fn (this_arg: *const c_void, other_arg: &{}) -> bool,", trait_name).unwrap();
- writeln!(extra_headers, "typedef struct LDK{} LDK{};", trait_name, trait_name).unwrap();
- generated_fields.push(("eq".to_owned(), true));
+ generated_fields.push(("eq".to_owned(), None, Some(format!("\t/** {} */\n", eq_docs))));
},
- ("std::hash::Hash", _) => {
- writeln!(w, "\t/// Calculate a succinct non-cryptographic hash for an object given its this_arg pointer.").unwrap();
- writeln!(w, "\t/// This is used, for example, for inclusion of this object in a hash map.").unwrap();
+ ("std::hash::Hash", _)|("core::hash::Hash", _) => {
+ let hash_docs_a = "Calculate a succinct non-cryptographic hash for an object given its this_arg pointer.";
+ let hash_docs_b = "This is used, for example, for inclusion of this object in a hash map.";
+ writeln!(w, "\t/// {}", hash_docs_a).unwrap();
+ writeln!(w, "\t/// {}", hash_docs_b).unwrap();
writeln!(w, "\tpub hash: extern \"C\" fn (this_arg: *const c_void) -> u64,").unwrap();
- generated_fields.push(("hash".to_owned(), true));
+ generated_fields.push(("hash".to_owned(), None,
+ Some(format!("\t/**\n\t * {}\n\t * {}\n\t */\n", hash_docs_a, hash_docs_b))));
},
("Send", _) => {}, ("Sync", _) => {},
(s, i) => {
+ // TODO: Both of the below should expose supertrait methods in C++, but doing so is
+ // nontrivial.
generated_fields.push(if types.crate_types.traits.get(s).is_none() {
let (docs, name, ret) = convert_trait_impl_field(s);
writeln!(w, "\t/// {}", docs).unwrap();
writeln!(w, "\tpub {}: extern \"C\" fn (this_arg: *const c_void) -> {},", name, ret).unwrap();
- (name, true) // Assume clonable
+ (name, None, None) // Assume clonable
} else {
// For in-crate supertraits, just store a C-mapped copy of the supertrait as a member.
writeln!(w, "\t/// Implementation of {} for this object.", i).unwrap();
- writeln!(w, "\tpub {}: crate::{},", i, s).unwrap();
let is_clonable = types.is_clonable(s);
- if !is_clonable && requires_clone {
- writeln!(w, "\t/// Creates a copy of the {}, for a copy of this {}.", i, trait_name).unwrap();
- writeln!(w, "\t/// Because {} doesn't natively support copying itself, you have to provide a full copy implementation here.", i).unwrap();
- writeln!(w, "\tpub {}_clone: extern \"C\" fn (orig_{}: &{}) -> {},", i, i, i, i).unwrap();
- }
- (format!("{}", i), is_clonable)
+ writeln!(w, "\tpub {}: crate::{},", i, s).unwrap();
+ (format!("{}", i), if !is_clonable {
+ Some(format!("crate::{}_clone_fields", s))
+ } else { None }, None)
});
}
) );
writeln!(w, "\t/// Frees any resources associated with this object given its this_arg pointer.").unwrap();
writeln!(w, "\t/// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.").unwrap();
writeln!(w, "\tpub free: Option<extern \"C\" fn(this_arg: *mut c_void)>,").unwrap();
- generated_fields.push(("free".to_owned(), true));
+ generated_fields.push(("free".to_owned(), None, None));
writeln!(w, "}}").unwrap();
macro_rules! impl_trait_for_c {
}
write_method_var_decl_body(w, &m.sig, "\t", $type_resolver, Some(&meth_gen_types), true);
write!(w, "(self{}.{})(", $impl_accessor, m.sig.ident).unwrap();
- write_method_call_params(w, &m.sig, "\t", $type_resolver, Some(&meth_gen_types), "", true);
+ let mut args = Vec::new();
+ write_method_call_params(&mut args, &m.sig, "\t", $type_resolver, Some(&meth_gen_types), "", true);
+ w.write_all(String::from_utf8(args).unwrap().replace("self", &format!("self{}", $impl_accessor)).as_bytes()).unwrap();
writeln!(w, "\n\t}}").unwrap();
},
}
}
+ writeln!(w, "unsafe impl Send for {} {{}}", trait_name).unwrap();
+ writeln!(w, "unsafe impl Sync for {} {{}}", trait_name).unwrap();
+
+ writeln!(w, "#[no_mangle]").unwrap();
+ writeln!(w, "pub(crate) extern \"C\" fn {}_clone_fields(orig: &{}) -> {} {{", trait_name, trait_name, trait_name).unwrap();
+ writeln!(w, "\t{} {{", trait_name).unwrap();
+ writeln!(w, "\t\tthis_arg: orig.this_arg,").unwrap();
+ for (field, clone_fn, _) in generated_fields.iter() {
+ if let Some(f) = clone_fn {
+ // If the field isn't clonable, blindly assume its a trait and hope for the best.
+ writeln!(w, "\t\t{}: {}(&orig.{}),", field, f, field).unwrap();
+ } else {
+ writeln!(w, "\t\t{}: Clone::clone(&orig.{}),", field, field).unwrap();
+ }
+ }
+ writeln!(w, "\t}}\n}}").unwrap();
// Implement supertraits for the C-mapped struct.
walk_supertraits!(t, Some(&types), (
- ("Send", _) => writeln!(w, "unsafe impl Send for {} {{}}", trait_name).unwrap(),
- ("Sync", _) => writeln!(w, "unsafe impl Sync for {} {{}}", trait_name).unwrap(),
- ("std::cmp::Eq", _) => {
+ ("std::cmp::Eq", _)|("core::cmp::Eq", _) => {
writeln!(w, "impl std::cmp::Eq for {} {{}}", trait_name).unwrap();
writeln!(w, "impl std::cmp::PartialEq for {} {{", trait_name).unwrap();
writeln!(w, "\tfn eq(&self, o: &Self) -> bool {{ (self.eq)(self.this_arg, o) }}\n}}").unwrap();
},
- ("std::hash::Hash", _) => {
+ ("std::hash::Hash", _)|("core::hash::Hash", _) => {
writeln!(w, "impl std::hash::Hash for {} {{", trait_name).unwrap();
writeln!(w, "\tfn hash<H: std::hash::Hasher>(&self, hasher: &mut H) {{ hasher.write_u64((self.hash)(self.this_arg)) }}\n}}").unwrap();
},
+ ("Send", _) => {}, ("Sync", _) => {},
("Clone", _) => {
writeln!(w, "#[no_mangle]").unwrap();
writeln!(w, "/// Creates a copy of a {}", trait_name).unwrap();
writeln!(w, "pub extern \"C\" fn {}_clone(orig: &{}) -> {} {{", trait_name, trait_name, trait_name).unwrap();
- writeln!(w, "\t{} {{", trait_name).unwrap();
- writeln!(w, "\t\tthis_arg: if let Some(f) = orig.clone {{ (f)(orig.this_arg) }} else {{ orig.this_arg }},").unwrap();
- for (field, clonable) in generated_fields.iter() {
- if *clonable {
- writeln!(w, "\t\t{}: Clone::clone(&orig.{}),", field, field).unwrap();
- } else {
- writeln!(w, "\t\t{}: (orig.{}_clone)(&orig.{}),", field, field, field).unwrap();
- writeln!(w, "\t\t{}_clone: orig.{}_clone,", field, field).unwrap();
- }
- }
- writeln!(w, "\t}}\n}}").unwrap();
+ writeln!(w, "\tlet mut res = {}_clone_fields(orig);", trait_name).unwrap();
+ writeln!(w, "\tif let Some(f) = orig.cloned {{ (f)(&mut res) }};").unwrap();
+ writeln!(w, "\tres\n}}").unwrap();
writeln!(w, "impl Clone for {} {{", trait_name).unwrap();
writeln!(w, "\tfn clone(&self) -> Self {{").unwrap();
writeln!(w, "\t\t{}_clone(self)", trait_name).unwrap();
writeln!(w, "impl {} for {} {{", s, trait_name).unwrap();
impl_trait_for_c!(supertrait, format!(".{}", i), &resolver);
writeln!(w, "}}").unwrap();
- walk_supertraits!(supertrait, Some(&types), (
- ("Send", _) => writeln!(w, "unsafe impl Send for {} {{}}", trait_name).unwrap(),
- ("Sync", _) => writeln!(w, "unsafe impl Sync for {} {{}}", trait_name).unwrap(),
- _ => unimplemented!()
- ) );
} else {
do_write_impl_trait(w, s, i, &trait_name);
}
// Finally, implement the original Rust trait for the newly created mapped trait.
writeln!(w, "\nuse {}::{} as rust{};", types.module_path, t.ident, trait_name).unwrap();
- write!(w, "impl rust{}", t.ident).unwrap();
- maybe_write_generics(w, &t.generics, types, false);
- writeln!(w, " for {} {{", trait_name).unwrap();
- impl_trait_for_c!(t, "", types);
- writeln!(w, "}}\n").unwrap();
- writeln!(w, "// We're essentially a pointer already, or at least a set of pointers, so allow us to be used").unwrap();
- writeln!(w, "// directly as a Deref trait in higher-level structs:").unwrap();
- writeln!(w, "impl std::ops::Deref for {} {{\n\ttype Target = Self;", trait_name).unwrap();
- writeln!(w, "\tfn deref(&self) -> &Self {{\n\t\tself\n\t}}\n}}").unwrap();
+ if implementable {
+ write!(w, "impl rust{}", t.ident).unwrap();
+ maybe_write_generics(w, &t.generics, types, false);
+ writeln!(w, " for {} {{", trait_name).unwrap();
+ impl_trait_for_c!(t, "", types);
+ writeln!(w, "}}\n").unwrap();
+ writeln!(w, "// We're essentially a pointer already, or at least a set of pointers, so allow us to be used").unwrap();
+ writeln!(w, "// directly as a Deref trait in higher-level structs:").unwrap();
+ writeln!(w, "impl std::ops::Deref for {} {{\n\ttype Target = Self;", trait_name).unwrap();
+ writeln!(w, "\tfn deref(&self) -> &Self {{\n\t\tself\n\t}}\n}}").unwrap();
+ }
writeln!(w, "/// Calls the free function if one is set").unwrap();
writeln!(w, "#[no_mangle]\npub extern \"C\" fn {}_free(this_ptr: {}) {{ }}", trait_name, trait_name).unwrap();
writeln!(w, "\t\t\tf(self.this_arg);").unwrap();
writeln!(w, "\t\t}}\n\t}}\n}}").unwrap();
- write_cpp_wrapper(cpp_headers, &trait_name, true);
+ write_cpp_wrapper(cpp_headers, &trait_name, true, Some(generated_fields.drain(..)
+ .filter_map(|(name, _, docs)| if let Some(docs) = docs { Some((name, docs)) } else { None }).collect()));
}
/// Write out a simple "opaque" type (eg structs) which contain a pointer to the native Rust type
writeln!(w, "}}\n").unwrap();
writeln!(w, "impl Drop for {} {{\n\tfn drop(&mut self) {{", struct_name).unwrap();
writeln!(w, "\t\tif self.is_owned && !<*mut native{}>::is_null(self.inner) {{", ident).unwrap();
- writeln!(w, "\t\t\tlet _ = unsafe {{ Box::from_raw(self.inner) }};\n\t\t}}\n\t}}\n}}").unwrap();
+ writeln!(w, "\t\t\tlet _ = unsafe {{ Box::from_raw(ObjOps::untweak_ptr(self.inner)) }};\n\t\t}}\n\t}}\n}}").unwrap();
writeln!(w, "/// Frees any resources used by the {}, if is_owned is set and inner is non-NULL.", struct_name).unwrap();
writeln!(w, "#[no_mangle]\npub extern \"C\" fn {}_free(this_obj: {}) {{ }}", struct_name, struct_name).unwrap();
writeln!(w, "#[allow(unused)]").unwrap();
writeln!(w, "extern \"C\" fn {}_free_void(this_ptr: *mut c_void) {{", struct_name).unwrap();
writeln!(w, "\tunsafe {{ let _ = Box::from_raw(this_ptr as *mut native{}); }}\n}}", struct_name).unwrap();
writeln!(w, "#[allow(unused)]").unwrap();
- writeln!(w, "/// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy").unwrap();
writeln!(w, "impl {} {{", struct_name).unwrap();
+ writeln!(w, "\tpub(crate) fn get_native_ref(&self) -> &'static native{} {{", struct_name).unwrap();
+ writeln!(w, "\t\tunsafe {{ &*ObjOps::untweak_ptr(self.inner) }}").unwrap();
+ writeln!(w, "\t}}").unwrap();
+ writeln!(w, "\tpub(crate) fn get_native_mut_ref(&self) -> &'static mut native{} {{", struct_name).unwrap();
+ writeln!(w, "\t\tunsafe {{ &mut *ObjOps::untweak_ptr(self.inner) }}").unwrap();
+ writeln!(w, "\t}}").unwrap();
+ writeln!(w, "\t/// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy").unwrap();
writeln!(w, "\tpub(crate) fn take_inner(mut self) -> *mut native{} {{", struct_name).unwrap();
writeln!(w, "\t\tassert!(self.is_owned);").unwrap();
- writeln!(w, "\t\tlet ret = self.inner;").unwrap();
+ writeln!(w, "\t\tlet ret = ObjOps::untweak_ptr(self.inner);").unwrap();
writeln!(w, "\t\tself.inner = std::ptr::null_mut();").unwrap();
writeln!(w, "\t\tret").unwrap();
writeln!(w, "\t}}\n}}").unwrap();
- write_cpp_wrapper(cpp_headers, &format!("{}", ident), true);
+ write_cpp_wrapper(cpp_headers, &format!("{}", ident), true, None);
}
/// Writes out all the relevant mappings for a Rust struct, deferring to writeln_opaque to generate
all_fields_settable = false;
continue
},
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if let Some(ident) = &field.ident {
and_token: syn::Token!(&)(Span::call_site()), lifetime: None, mutability: None,
elem: Box::new(field.ty.clone()) });
if types.understood_c_type(&ref_type, Some(&gen_types)) {
- writeln_docs(w, &field.attrs, "");
+ writeln_arg_docs(w, &field.attrs, "", types, Some(&gen_types), vec![].drain(..), Some(&ref_type));
write!(w, "#[no_mangle]\npub extern \"C\" fn {}_get_{}(this_ptr: &{}) -> ", struct_name, ident, struct_name).unwrap();
types.write_c_type(w, &ref_type, Some(&gen_types), true);
- write!(w, " {{\n\tlet mut inner_val = &mut unsafe {{ &mut *this_ptr.inner }}.{};\n\t", ident).unwrap();
+ write!(w, " {{\n\tlet mut inner_val = &mut this_ptr.get_native_mut_ref().{};\n\t", ident).unwrap();
let local_var = types.write_to_c_conversion_new_var(w, &format_ident!("inner_val"), &ref_type, Some(&gen_types), true);
if local_var { write!(w, "\n\t").unwrap(); }
types.write_to_c_conversion_inline_prefix(w, &ref_type, Some(&gen_types), true);
}
if types.understood_c_type(&field.ty, Some(&gen_types)) {
- writeln_docs(w, &field.attrs, "");
+ writeln_arg_docs(w, &field.attrs, "", types, Some(&gen_types), vec![("val".to_owned(), &field.ty)].drain(..), None);
write!(w, "#[no_mangle]\npub extern \"C\" fn {}_set_{}(this_ptr: &mut {}, mut val: ", struct_name, ident, struct_name).unwrap();
types.write_c_type(w, &field.ty, Some(&gen_types), false);
write!(w, ") {{\n\t").unwrap();
let local_var = types.write_from_c_conversion_new_var(w, &format_ident!("val"), &field.ty, Some(&gen_types));
if local_var { write!(w, "\n\t").unwrap(); }
- write!(w, "unsafe {{ &mut *this_ptr.inner }}.{} = ", ident).unwrap();
+ write!(w, "unsafe {{ &mut *ObjOps::untweak_ptr(this_ptr.inner) }}.{} = ", ident).unwrap();
types.write_from_c_conversion_prefix(w, &field.ty, Some(&gen_types));
write!(w, "val").unwrap();
types.write_from_c_conversion_suffix(w, &field.ty, Some(&gen_types));
write!(w, "\n\t").unwrap();
}
}
- writeln!(w, "{} {{ inner: Box::into_raw(Box::new(native{} {{", struct_name, s.ident).unwrap();
+ writeln!(w, "{} {{ inner: ObjOps::heap_alloc(native{} {{", struct_name, s.ident).unwrap();
for field in fields.named.iter() {
write!(w, "\t\t{}: ", field.ident.as_ref().unwrap()).unwrap();
types.write_from_c_conversion_prefix(w, &field.ty, Some(&gen_types));
types.write_from_c_conversion_suffix(w, &field.ty, Some(&gen_types));
writeln!(w, ",").unwrap();
}
- writeln!(w, "\t}})), is_owned: true }}\n}}").unwrap();
+ writeln!(w, "\t}}), is_owned: true }}\n}}").unwrap();
}
}
}
match export_status(&i.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => return,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if let syn::Type::Tuple(_) = &*i.self_ty {
let export = export_status(&trait_obj.attrs);
match export {
- ExportStatus::Export => {},
+ ExportStatus::Export|ExportStatus::NotImplementable => {},
ExportStatus::NoExport|ExportStatus::TestOnly => return,
}
// type-conversion logic without actually knowing the concrete native type.
writeln!(w, "impl From<native{}> for crate::{} {{", ident, full_trait_path).unwrap();
writeln!(w, "\tfn from(obj: native{}) -> Self {{", ident).unwrap();
- writeln!(w, "\t\tlet mut rust_obj = {} {{ inner: Box::into_raw(Box::new(obj)), is_owned: true }};", ident).unwrap();
+ writeln!(w, "\t\tlet mut rust_obj = {} {{ inner: ObjOps::heap_alloc(obj), is_owned: true }};", ident).unwrap();
writeln!(w, "\t\tlet mut ret = {}_as_{}(&rust_obj);", ident, trait_obj.ident).unwrap();
writeln!(w, "\t\t// We want to free rust_obj when ret gets drop()'d, not rust_obj, so wipe rust_obj's pointer and set ret's free() fn").unwrap();
writeln!(w, "\t\trust_obj.inner = std::ptr::null_mut();").unwrap();
writeln!(w, "/// This copies the `inner` pointer in this_arg and thus the returned {} must be freed before this_arg is", trait_obj.ident).unwrap();
write!(w, "#[no_mangle]\npub extern \"C\" fn {}_as_{}(this_arg: &{}) -> crate::{} {{\n", ident, trait_obj.ident, ident, full_trait_path).unwrap();
writeln!(w, "\tcrate::{} {{", full_trait_path).unwrap();
- writeln!(w, "\t\tthis_arg: unsafe {{ (*this_arg).inner as *mut c_void }},").unwrap();
+ writeln!(w, "\t\tthis_arg: unsafe {{ ObjOps::untweak_ptr((*this_arg).inner) as *mut c_void }},").unwrap();
writeln!(w, "\t\tfree: None,").unwrap();
macro_rules! write_meth {
continue;
},
ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let mut printed = false;
}
}
let mut requires_clone = false;
- walk_supertraits!(trait_obj, Some(&types), (
- ("Clone", _) => requires_clone = true,
- (_, _) => {}
- ) );
walk_supertraits!(trait_obj, Some(&types), (
("Clone", _) => {
- writeln!(w, "\t\tclone: Some({}_clone_void),", ident).unwrap();
+ requires_clone = true;
+ writeln!(w, "\t\tcloned: Some({}_{}_cloned),", trait_obj.ident, ident).unwrap();
},
("Sync", _) => {}, ("Send", _) => {},
("std::marker::Sync", _) => {}, ("std::marker::Send", _) => {},
(s, t) => {
if let Some(supertrait_obj) = types.crate_types.traits.get(s) {
writeln!(w, "\t\t{}: crate::{} {{", t, s).unwrap();
- writeln!(w, "\t\t\tthis_arg: unsafe {{ (*this_arg).inner as *mut c_void }},").unwrap();
+ writeln!(w, "\t\t\tthis_arg: unsafe {{ ObjOps::untweak_ptr((*this_arg).inner) as *mut c_void }},").unwrap();
writeln!(w, "\t\t\tfree: None,").unwrap();
for item in supertrait_obj.items.iter() {
match item {
}
}
write!(w, "\t\t}},\n").unwrap();
- if !types.is_clonable(s) && requires_clone {
- writeln!(w, "\t\t{}_clone: {}_{}_clone,", t, ident, t).unwrap();
- }
} else {
write_trait_impl_field_assign(w, s, ident);
}
match export_status(&trait_method.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if let syn::ReturnType::Type(_, _) = &$m.sig.output {
_ => unimplemented!(),
}
}
- walk_supertraits!(trait_obj, Some(&types), (
- (s, t) => {
- if let Some(supertrait_obj) = types.crate_types.traits.get(s) {
- if !types.is_clonable(s) && requires_clone {
- writeln!(w, "extern \"C\" fn {}_{}_clone(orig: &crate::{}) -> crate::{} {{", ident, t, s, s).unwrap();
- writeln!(w, "\tcrate::{} {{", s).unwrap();
- writeln!(w, "\t\tthis_arg: orig.this_arg,").unwrap();
- writeln!(w, "\t\tfree: None,").unwrap();
- for item in supertrait_obj.items.iter() {
- match item {
- syn::TraitItem::Method(m) => {
- write_meth!(m, supertrait_obj, "");
- },
- _ => {},
- }
- }
- write!(w, "\t}}\n}}\n").unwrap();
+ if requires_clone {
+ writeln!(w, "extern \"C\" fn {}_{}_cloned(new_obj: &mut crate::{}) {{", trait_obj.ident, ident, full_trait_path).unwrap();
+ writeln!(w, "\tnew_obj.this_arg = {}_clone_void(new_obj.this_arg);", ident).unwrap();
+ writeln!(w, "\tnew_obj.free = Some({}_free_void);", ident).unwrap();
+ walk_supertraits!(trait_obj, Some(&types), (
+ (s, t) => {
+ if types.crate_types.traits.get(s).is_some() {
+ assert!(!types.is_clonable(s)); // We don't currently support cloning with a clonable supertrait
+ writeln!(w, "\tnew_obj.{}.this_arg = new_obj.this_arg;", t).unwrap();
+ writeln!(w, "\tnew_obj.{}.free = None;", t).unwrap();
}
}
- }
- ) );
+ ) );
+ writeln!(w, "}}").unwrap();
+ }
write!(w, "\n").unwrap();
} else if path_matches_nongeneric(&trait_path.1, &["From"]) {
} else if path_matches_nongeneric(&trait_path.1, &["Default"]) {
writeln!(w, "/// Creates a \"default\" {}. See struct and individual field documentaiton for details on which values are used.", ident).unwrap();
write!(w, "#[must_use]\n#[no_mangle]\npub extern \"C\" fn {}_default() -> {} {{\n", ident, ident).unwrap();
- write!(w, "\t{} {{ inner: Box::into_raw(Box::new(Default::default())), is_owned: true }}\n", ident).unwrap();
+ write!(w, "\t{} {{ inner: ObjOps::heap_alloc(Default::default()), is_owned: true }}\n", ident).unwrap();
write!(w, "}}\n").unwrap();
} else if path_matches_nongeneric(&trait_path.1, &["core", "cmp", "PartialEq"]) {
+ } else if path_matches_nongeneric(&trait_path.1, &["core", "cmp", "Eq"]) {
+ writeln!(w, "/// Checks if two {}s contain equal inner contents.", ident).unwrap();
+ writeln!(w, "/// This ignores pointers and is_owned flags and looks at the values in fields.").unwrap();
+ if types.c_type_has_inner_from_path(&resolved_path) {
+ writeln!(w, "/// Two objects with NULL inner values will be considered \"equal\" here.").unwrap();
+ }
+ write!(w, "#[no_mangle]\npub extern \"C\" fn {}_eq(a: &{}, b: &{}) -> bool {{\n", ident, ident, ident).unwrap();
+ if types.c_type_has_inner_from_path(&resolved_path) {
+ write!(w, "\tif a.inner == b.inner {{ return true; }}\n").unwrap();
+ write!(w, "\tif a.inner.is_null() || b.inner.is_null() {{ return false; }}\n").unwrap();
+ }
+
+ let path = &p.path;
+ let ref_type: syn::Type = syn::parse_quote!(&#path);
+ assert!(!types.write_to_c_conversion_new_var(w, &format_ident!("a"), &*i.self_ty, Some(&gen_types), false), "We don't support new var conversions when comparing equality");
+
+ write!(w, "\tif ").unwrap();
+ types.write_from_c_conversion_prefix(w, &ref_type, Some(&gen_types));
+ write!(w, "a").unwrap();
+ types.write_from_c_conversion_suffix(w, &ref_type, Some(&gen_types));
+ write!(w, " == ").unwrap();
+ types.write_from_c_conversion_prefix(w, &ref_type, Some(&gen_types));
+ write!(w, "b").unwrap();
+ types.write_from_c_conversion_suffix(w, &ref_type, Some(&gen_types));
+
+ writeln!(w, " {{ true }} else {{ false }}\n}}").unwrap();
+ } else if path_matches_nongeneric(&trait_path.1, &["core", "hash", "Hash"]) {
+ writeln!(w, "/// Checks if two {}s contain equal inner contents.", ident).unwrap();
+ write!(w, "#[no_mangle]\npub extern \"C\" fn {}_hash(o: &{}) -> u64 {{\n", ident, ident).unwrap();
+ if types.c_type_has_inner_from_path(&resolved_path) {
+ write!(w, "\tif o.inner.is_null() {{ return 0; }}\n").unwrap();
+ }
+
+ let path = &p.path;
+ let ref_type: syn::Type = syn::parse_quote!(&#path);
+ assert!(!types.write_to_c_conversion_new_var(w, &format_ident!("a"), &*i.self_ty, Some(&gen_types), false), "We don't support new var conversions when comparing equality");
+
+ writeln!(w, "\t// Note that we'd love to use std::collections::hash_map::DefaultHasher but it's not in core").unwrap();
+ writeln!(w, "\t#[allow(deprecated)]").unwrap();
+ writeln!(w, "\tlet mut hasher = core::hash::SipHasher::new();").unwrap();
+ write!(w, "\tstd::hash::Hash::hash(").unwrap();
+ types.write_from_c_conversion_prefix(w, &ref_type, Some(&gen_types));
+ write!(w, "o").unwrap();
+ types.write_from_c_conversion_suffix(w, &ref_type, Some(&gen_types));
+ writeln!(w, ", &mut hasher);").unwrap();
+ writeln!(w, "\tstd::hash::Hasher::finish(&hasher)\n}}").unwrap();
} else if (path_matches_nongeneric(&trait_path.1, &["core", "clone", "Clone"]) || path_matches_nongeneric(&trait_path.1, &["Clone"])) &&
types.c_type_has_inner_from_path(&resolved_path) {
writeln!(w, "impl Clone for {} {{", ident).unwrap();
writeln!(w, "\tfn clone(&self) -> Self {{").unwrap();
writeln!(w, "\t\tSelf {{").unwrap();
writeln!(w, "\t\t\tinner: if <*mut native{}>::is_null(self.inner) {{ std::ptr::null_mut() }} else {{", ident).unwrap();
- writeln!(w, "\t\t\t\tBox::into_raw(Box::new(unsafe {{ &*self.inner }}.clone())) }},").unwrap();
+ writeln!(w, "\t\t\t\tObjOps::heap_alloc(unsafe {{ &*ObjOps::untweak_ptr(self.inner) }}.clone()) }},").unwrap();
writeln!(w, "\t\t\tis_owned: true,").unwrap();
writeln!(w, "\t\t}}\n\t}}\n}}").unwrap();
writeln!(w, "#[allow(unused)]").unwrap();
writeln!(w, "#[no_mangle]").unwrap();
writeln!(w, "/// Read a {} object from a string", ident).unwrap();
writeln!(w, "pub extern \"C\" fn {}_from_str(s: crate::c_types::Str) -> {} {{", ident, container).unwrap();
- writeln!(w, "\tmatch {}::from_str(s.into()) {{", resolved_path).unwrap();
+ writeln!(w, "\tmatch {}::from_str(s.into_str()) {{", resolved_path).unwrap();
writeln!(w, "\t\tOk(r) => {{").unwrap();
let new_var = types.write_to_c_conversion_new_var(w, &format_ident!("r"), &*i.self_ty, Some(&gen_types), false);
write!(w, "\t\t\tcrate::c_types::CResultTempl::ok(\n\t\t\t\t").unwrap();
write!(w, "{}r", if new_var { "local_" } else { "" }).unwrap();
types.write_to_c_conversion_inline_suffix(w, &*i.self_ty, Some(&gen_types), false);
writeln!(w, "\n\t\t\t)\n\t\t}},").unwrap();
- writeln!(w, "\t\tErr(e) => crate::c_types::CResultTempl::err(0u8),").unwrap();
+ writeln!(w, "\t\tErr(e) => crate::c_types::CResultTempl::err(()),").unwrap();
writeln!(w, "\t}}.into()\n}}").unwrap();
}
} else if path_matches_nongeneric(&trait_path.1, &["Display"]) {
match export_status(&m.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
+ let mut meth_gen_types = gen_types.push_ctx();
+ assert!(meth_gen_types.learn_generics(&m.sig.generics, types));
if m.defaultness.is_some() { unimplemented!(); }
- writeln_docs(w, &m.attrs, "");
+ writeln_fn_docs(w, &m.attrs, "", types, Some(&meth_gen_types), m.sig.inputs.iter(), &m.sig.output);
if let syn::ReturnType::Type(_, _) = &m.sig.output {
writeln!(w, "#[must_use]").unwrap();
}
DeclType::StructImported => format!("{}", ident),
_ => unimplemented!(),
};
- let mut meth_gen_types = gen_types.push_ctx();
- assert!(meth_gen_types.learn_generics(&m.sig.generics, types));
write_method_params(w, &m.sig, &ret_type, types, Some(&meth_gen_types), false, true);
write!(w, " {{\n\t").unwrap();
write_method_var_decl_body(w, &m.sig, "", types, Some(&meth_gen_types), false);
if takes_owned_self {
write!(w, "(*unsafe {{ Box::from_raw(this_arg.take_inner()) }}).{}(", m.sig.ident).unwrap();
} else if takes_mut_self {
- write!(w, "unsafe {{ &mut (*(this_arg.inner as *mut native{})) }}.{}(", ident, m.sig.ident).unwrap();
+ write!(w, "unsafe {{ &mut (*ObjOps::untweak_ptr(this_arg.inner as *mut native{})) }}.{}(", ident, m.sig.ident).unwrap();
} else {
- write!(w, "unsafe {{ &*this_arg.inner }}.{}(", m.sig.ident).unwrap();
+ write!(w, "unsafe {{ &*ObjOps::untweak_ptr(this_arg.inner) }}.{}(", m.sig.ident).unwrap();
}
},
_ => unimplemented!(),
}
}
+/// Replaces upper case charachters with underscore followed by lower case except the first
+/// charachter and repeated upper case characthers (which are only made lower case).
+fn camel_to_snake_case(camel: &str) -> String {
+ let mut res = "".to_string();
+ let mut last_upper = -1;
+ for (idx, c) in camel.chars().enumerate() {
+ if c.is_uppercase() {
+ if last_upper != idx as isize - 1 { res.push('_'); }
+ res.push(c.to_lowercase().next().unwrap());
+ last_upper = idx as isize;
+ } else {
+ res.push(c);
+ }
+ }
+ res
+}
+
/// Print a mapping of an enum. If all of the enum's fields are C-mapped in some form (or the enum
/// is unitary), we generate an equivalent enum with all types replaced with their C mapped
match export_status(&e.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => return,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if is_enum_opaque(e) {
assert!(gen_types.learn_generics(&e.generics, types));
let mut needs_free = false;
+ let mut constr = Vec::new();
writeln!(w, "#[must_use]\n#[derive(Clone)]\n#[repr(C)]\npub enum {} {{", e.ident).unwrap();
for var in e.variants.iter() {
assert_eq!(export_status(&var.attrs), ExportStatus::Export); // We can't partially-export a mirrored enum
writeln_docs(w, &var.attrs, "\t");
write!(w, "\t{}", var.ident).unwrap();
+ writeln!(&mut constr, "#[no_mangle]\n/// Utility method to constructs a new {}-variant {}", var.ident, e.ident).unwrap();
+ let constr_name = camel_to_snake_case(&format!("{}", var.ident));
+ write!(&mut constr, "pub extern \"C\" fn {}_{}(", e.ident, constr_name).unwrap();
+ let mut empty_tuple_variant = false;
if let syn::Fields::Named(fields) = &var.fields {
needs_free = true;
writeln!(w, " {{").unwrap();
- for field in fields.named.iter() {
+ for (idx, field) in fields.named.iter().enumerate() {
if export_status(&field.attrs) == ExportStatus::TestOnly { continue; }
- writeln_docs(w, &field.attrs, "\t\t");
+ writeln_field_docs(w, &field.attrs, "\t\t", types, Some(&gen_types), &field.ty);
write!(w, "\t\t{}: ", field.ident.as_ref().unwrap()).unwrap();
+ write!(&mut constr, "{}{}: ", if idx != 0 { ", " } else { "" }, field.ident.as_ref().unwrap()).unwrap();
types.write_c_type(w, &field.ty, Some(&gen_types), false);
+ types.write_c_type(&mut constr, &field.ty, Some(&gen_types), false);
writeln!(w, ",").unwrap();
}
write!(w, "\t}}").unwrap();
} else if let syn::Fields::Unnamed(fields) = &var.fields {
- needs_free = true;
- write!(w, "(").unwrap();
- for (idx, field) in fields.unnamed.iter().enumerate() {
- if export_status(&field.attrs) == ExportStatus::TestOnly { continue; }
- types.write_c_type(w, &field.ty, Some(&gen_types), false);
- if idx != fields.unnamed.len() - 1 {
- write!(w, ",").unwrap();
+ if fields.unnamed.len() == 1 {
+ let mut empty_check = Vec::new();
+ types.write_c_type(&mut empty_check, &fields.unnamed[0].ty, Some(&gen_types), false);
+ if empty_check.is_empty() {
+ empty_tuple_variant = true;
+ }
+ }
+ if !empty_tuple_variant {
+ needs_free = true;
+ write!(w, "(").unwrap();
+ for (idx, field) in fields.unnamed.iter().enumerate() {
+ if export_status(&field.attrs) == ExportStatus::TestOnly { continue; }
+ write!(&mut constr, "{}: ", ('a' as u8 + idx as u8) as char).unwrap();
+ types.write_c_type(w, &field.ty, Some(&gen_types), false);
+ types.write_c_type(&mut constr, &field.ty, Some(&gen_types), false);
+ if idx != fields.unnamed.len() - 1 {
+ write!(w, ",").unwrap();
+ write!(&mut constr, ",").unwrap();
+ }
}
+ write!(w, ")").unwrap();
}
- write!(w, ")").unwrap();
}
if var.discriminant.is_some() { unimplemented!(); }
+ write!(&mut constr, ") -> {} {{\n\t{}::{}", e.ident, e.ident, var.ident).unwrap();
+ if let syn::Fields::Named(fields) = &var.fields {
+ writeln!(&mut constr, " {{").unwrap();
+ for field in fields.named.iter() {
+ writeln!(&mut constr, "\t\t{},", field.ident.as_ref().unwrap()).unwrap();
+ }
+ writeln!(&mut constr, "\t}}").unwrap();
+ } else if let syn::Fields::Unnamed(fields) = &var.fields {
+ if !empty_tuple_variant {
+ write!(&mut constr, "(").unwrap();
+ for idx in 0..fields.unnamed.len() {
+ write!(&mut constr, "{}, ", ('a' as u8 + idx as u8) as char).unwrap();
+ }
+ writeln!(&mut constr, ")").unwrap();
+ } else {
+ writeln!(&mut constr, "").unwrap();
+ }
+ }
+ writeln!(&mut constr, "}}").unwrap();
writeln!(w, ",").unwrap();
}
writeln!(w, "}}\nuse {}::{} as native{};\nimpl {} {{", types.module_path, e.ident, e.ident, e.ident).unwrap();
writeln!(w, "\t#[allow(unused)]\n\tpub(crate) fn {} {{\n\t\tmatch {} {{", $fn_sig, if $to_c { "native" } else { "self" }).unwrap();
for var in e.variants.iter() {
write!(w, "\t\t\t{}{}::{} ", if $to_c { "native" } else { "" }, e.ident, var.ident).unwrap();
+ let mut empty_tuple_variant = false;
if let syn::Fields::Named(fields) = &var.fields {
write!(w, "{{").unwrap();
for field in fields.named.iter() {
}
write!(w, "}} ").unwrap();
} else if let syn::Fields::Unnamed(fields) = &var.fields {
- write!(w, "(").unwrap();
- for (idx, field) in fields.unnamed.iter().enumerate() {
- if export_status(&field.attrs) == ExportStatus::TestOnly { continue; }
- write!(w, "{}{}, ", if $ref { "ref " } else { "mut " }, ('a' as u8 + idx as u8) as char).unwrap();
+ if fields.unnamed.len() == 1 {
+ let mut empty_check = Vec::new();
+ types.write_c_type(&mut empty_check, &fields.unnamed[0].ty, Some(&gen_types), false);
+ if empty_check.is_empty() {
+ empty_tuple_variant = true;
+ }
+ }
+ if !empty_tuple_variant || $to_c {
+ write!(w, "(").unwrap();
+ for (idx, field) in fields.unnamed.iter().enumerate() {
+ if export_status(&field.attrs) == ExportStatus::TestOnly { continue; }
+ write!(w, "{}{}, ", if $ref { "ref " } else { "mut " }, ('a' as u8 + idx as u8) as char).unwrap();
+ }
+ write!(w, ") ").unwrap();
}
- write!(w, ") ").unwrap();
}
write!(w, "=>").unwrap();
} else if let syn::Fields::Unnamed(fields) = &var.fields {
write!(w, " {{\n\t\t\t\t").unwrap();
for (idx, field) in fields.unnamed.iter().enumerate() {
- handle_field_a!(field, &format_ident!("{}", ('a' as u8 + idx as u8) as char));
+ if !empty_tuple_variant {
+ handle_field_a!(field, &format_ident!("{}", ('a' as u8 + idx as u8) as char));
+ }
}
} else { write!(w, " ").unwrap(); }
writeln!(w, "\n\t\t\t\t}}").unwrap();
write!(w, "\t\t\t}}").unwrap();
} else if let syn::Fields::Unnamed(fields) = &var.fields {
- write!(w, " (").unwrap();
- for (idx, field) in fields.unnamed.iter().enumerate() {
- write!(w, "\n\t\t\t\t\t").unwrap();
- handle_field_b!(field, &format_ident!("{}", ('a' as u8 + idx as u8) as char));
+ if !empty_tuple_variant || !$to_c {
+ write!(w, " (").unwrap();
+ for (idx, field) in fields.unnamed.iter().enumerate() {
+ write!(w, "\n\t\t\t\t\t").unwrap();
+ handle_field_b!(field, &format_ident!("{}", ('a' as u8 + idx as u8) as char));
+ }
+ writeln!(w, "\n\t\t\t\t)").unwrap();
}
- writeln!(w, "\n\t\t\t\t)").unwrap();
write!(w, "\t\t\t}}").unwrap();
}
writeln!(w, ",").unwrap();
writeln!(w, "pub extern \"C\" fn {}_clone(orig: &{}) -> {} {{", e.ident, e.ident, e.ident).unwrap();
writeln!(w, "\torig.clone()").unwrap();
writeln!(w, "}}").unwrap();
- write_cpp_wrapper(cpp_headers, &format!("{}", e.ident), needs_free);
+ w.write_all(&constr).unwrap();
+ write_cpp_wrapper(cpp_headers, &format!("{}", e.ident), needs_free, None);
}
fn writeln_fn<'a, 'b, W: std::io::Write>(w: &mut W, f: &'a syn::ItemFn, types: &mut TypeResolver<'b, 'a>) {
match export_status(&f.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => return,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
- writeln_docs(w, &f.attrs, "");
-
let mut gen_types = GenericTypes::new(None);
if !gen_types.learn_generics(&f.sig.generics, types) { return; }
+ writeln_fn_docs(w, &f.attrs, "", types, Some(&gen_types), f.sig.inputs.iter(), &f.sig.output);
+
write!(w, "#[no_mangle]\npub extern \"C\" fn {}(", f.sig.ident).unwrap();
write_method_params(w, &f.sig, "", types, Some(&gen_types), false, true);
write!(w, " {{\n\t").unwrap();
writeln!(out, "#![allow(unused_braces)]").unwrap();
// TODO: We need to map deny(missing_docs) in the source crate(s)
//writeln!(out, "#![deny(missing_docs)]").unwrap();
+ writeln!(out, "pub mod version;").unwrap();
writeln!(out, "pub mod c_types;").unwrap();
writeln!(out, "pub mod bitcoin;").unwrap();
} else {
if let syn::Type::Path(p) = &*c.ty {
let resolved_path = type_resolver.resolve_path(&p.path, None);
if type_resolver.is_primitive(&resolved_path) {
- writeln_docs(&mut out, &c.attrs, "");
+ writeln_field_docs(&mut out, &c.attrs, "", &mut type_resolver, None, &*c.ty);
writeln!(out, "\n#[no_mangle]").unwrap();
writeln!(out, "pub static {}: {} = {}::{};", c.ident, resolved_path, module, c.ident).unwrap();
}
match export_status(&t.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let mut process_alias = true;
match export_status(&s.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let struct_path = format!("{}::{}", module, s.ident);
crate_types.opaques.insert(struct_path, &s.ident);
syn::Item::Trait(t) => {
if let syn::Visibility::Public(_) = t.vis {
match export_status(&t.attrs) {
- ExportStatus::Export => {},
+ ExportStatus::Export|ExportStatus::NotImplementable => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
}
let trait_path = format!("{}::{}", module, t.ident);
match export_status(&t.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let type_path = format!("{}::{}", module, t.ident);
let mut process_alias = true;
match export_status(&e.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let enum_path = format!("{}::{}", module, e.ident);
crate_types.opaques.insert(enum_path, &e.ident);
match export_status(&e.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let enum_path = format!("{}::{}", module, e.ident);
crate_types.mirrored_enums.insert(enum_path, &e);
// For container templates which we created while walking the crate, make sure we add C++
// mapped types so that C++ users can utilize the auto-destructors available.
for (ty, has_destructor) in libtypes.templates_defined.borrow().iter() {
- write_cpp_wrapper(&mut cpp_header_file, ty, *has_destructor);
+ write_cpp_wrapper(&mut cpp_header_file, ty, *has_destructor, None);
}
writeln!(cpp_header_file, "}}").unwrap();
projects / ldk-c-bindings / blobdiff