use std::process;
use proc_macro2::Span;
+use quote::format_ident;
+use syn::parse_quote;
mod types;
mod blocks;
use types::*;
use blocks::*;
+const DEFAULT_IMPORTS: &'static str = "\nuse std::str::FromStr;\nuse std::ffi::c_void;\nuse bitcoin::hashes::Hash;\nuse crate::c_types::*;\n";
+
// *************************************
// *** Manually-expanded conversions ***
// *************************************
writeln!(w, "/// Serialize the {} object into a byte array which can be read by {}_read", for_obj, for_obj).unwrap();
writeln!(w, "pub extern \"C\" fn {}_write(obj: &{}) -> crate::c_types::derived::CVec_u8Z {{", for_obj, full_obj_path).unwrap();
- let ref_type = syn::Type::Reference(syn::TypeReference {
- and_token: syn::Token!(&)(Span::call_site()), lifetime: None, mutability: None,
- elem: Box::new(for_ty.clone()) });
- assert!(!types.write_from_c_conversion_new_var(w, &syn::Ident::new("obj", Span::call_site()), &ref_type, Some(generics)));
+ let ref_type: syn::Type = syn::parse_quote!(&#for_ty);
+ assert!(!types.write_from_c_conversion_new_var(w, &format_ident!("obj"), &ref_type, Some(generics)));
write!(w, "\tcrate::c_types::serialize_obj(").unwrap();
types.write_from_c_conversion_prefix(w, &ref_type, Some(generics));
},
"lightning::util::ser::Readable"|"lightning::util::ser::ReadableArgs" => {
// Create the Result<Object, DecodeError> syn::Type
- let mut err_segs = syn::punctuated::Punctuated::new();
- err_segs.push(syn::PathSegment { ident: syn::Ident::new("ln", Span::call_site()), arguments: syn::PathArguments::None });
- err_segs.push(syn::PathSegment { ident: syn::Ident::new("msgs", Span::call_site()), arguments: syn::PathArguments::None });
- err_segs.push(syn::PathSegment { ident: syn::Ident::new("DecodeError", Span::call_site()), arguments: syn::PathArguments::None });
- let mut args = syn::punctuated::Punctuated::new();
- args.push(syn::GenericArgument::Type(for_ty.clone()));
- args.push(syn::GenericArgument::Type(syn::Type::Path(syn::TypePath {
- qself: None, path: syn::Path {
- leading_colon: Some(syn::Token)), segments: err_segs,
- }
- })));
- let mut res_segs = syn::punctuated::Punctuated::new();
- res_segs.push(syn::PathSegment {
- ident: syn::Ident::new("Result", Span::call_site()),
- arguments: syn::PathArguments::AngleBracketed(syn::AngleBracketedGenericArguments {
- colon2_token: None, lt_token: syn::Token), args, gt_token: syn::Token),
- })
- });
- let res_ty = syn::Type::Path(syn::TypePath { qself: None, path: syn::Path {
- leading_colon: None, segments: res_segs } });
+ let res_ty: syn::Type = parse_quote!(Result<#for_ty, ::ln::msgs::DecodeError>);
writeln!(w, "#[no_mangle]").unwrap();
writeln!(w, "/// Read a {} from a byte array, created by {}_write", for_obj, for_obj).unwrap();
if let syn::GenericArgument::Type(args_ty) = args.args.iter().next().unwrap() {
types.write_c_type(w, args_ty, Some(generics), false);
- assert!(!types.write_from_c_conversion_new_var(&mut arg_conv, &syn::Ident::new("arg", Span::call_site()), &args_ty, Some(generics)));
+ assert!(!types.write_from_c_conversion_new_var(&mut arg_conv, &format_ident!("arg"), &args_ty, Some(generics)));
write!(&mut arg_conv, "\tlet arg_conv = ").unwrap();
types.write_from_c_conversion_prefix(&mut arg_conv, &args_ty, Some(generics));
writeln!(w, "\tlet res = crate::c_types::deserialize_obj(ser);").unwrap();
}
write!(w, "\t").unwrap();
- if types.write_to_c_conversion_new_var(w, &syn::Ident::new("res", Span::call_site()), &res_ty, Some(generics), false) {
+ if types.write_to_c_conversion_new_var(w, &format_ident!("res"), &res_ty, Some(generics), false) {
write!(w, "\n\t").unwrap();
}
types.write_to_c_conversion_inline_prefix(w, &res_ty, Some(generics), false);
// *** 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, "");
- let mut gen_types = GenericTypes::new();
+ let mut gen_types = GenericTypes::new(None);
assert!(gen_types.learn_generics(&t.generics, types));
gen_types.learn_associated_types(&t, types);
},
ExportStatus::Export => {},
ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if m.default.is_some() { unimplemented!(); }
writeln!(w, "\tpub clone: Option<extern \"C\" fn (this_arg: *const c_void) -> *mut c_void>,").unwrap();
generated_fields.push(("clone".to_owned(), true));
},
- ("std::cmp::Eq", _) => {
+ ("std::cmp::Eq", _)|("core::cmp::Eq", _) => {
writeln!(w, "\t/// Checks if two objects are equal given this object's this_arg pointer and another object.").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));
},
- ("std::hash::Hash", _) => {
+ ("std::hash::Hash", _)|("core::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();
writeln!(w, "\tpub hash: extern \"C\" fn (this_arg: *const c_void) -> u64,").unwrap();
ident.mutability.is_some() || ident.subpat.is_some() {
unimplemented!();
}
- write!(w, ", {}{}: ", if $type_resolver.skip_arg(&*arg.ty, Some(&meth_gen_types)) { "_" } else { "" }, ident.ident).unwrap();
+ write!(w, ", mut {}{}: ", if $type_resolver.skip_arg(&*arg.ty, Some(&meth_gen_types)) { "_" } else { "" }, ident.ident).unwrap();
}
_ => unimplemented!(),
}
}
}
+ writeln!(w, "unsafe impl Send for {} {{}}", trait_name).unwrap();
+ writeln!(w, "unsafe impl Sync for {} {{}}", trait_name).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, "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_opaque(w, &s.ident, struct_name, &s.generics, &s.attrs, types, extra_headers, cpp_headers);
if let syn::Fields::Named(fields) = &s.fields {
- let mut gen_types = GenericTypes::new();
+ let mut self_path_segs = syn::punctuated::Punctuated::new();
+ self_path_segs.push(s.ident.clone().into());
+ let self_path = syn::Path { leading_colon: None, segments: self_path_segs};
+ let mut gen_types = GenericTypes::new(Some((types.resolve_path(&self_path, None), &self_path)));
assert!(gen_types.learn_generics(&s.generics, types));
let mut all_fields_settable = true;
all_fields_settable = false;
continue
},
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if let Some(ident) = &field.ident {
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();
- let local_var = types.write_to_c_conversion_new_var(w, &syn::Ident::new("inner_val", Span::call_site()), &ref_type, Some(&gen_types), true);
+ 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 local_var {
- write!(w, "inner_val").unwrap();
- } else {
- write!(w, "(*inner_val)").unwrap();
- }
+ write!(w, "inner_val").unwrap();
types.write_to_c_conversion_inline_suffix(w, &ref_type, Some(&gen_types), true);
writeln!(w, "\n}}").unwrap();
}
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, &syn::Ident::new("val", Span::call_site()), &field.ty, Some(&gen_types));
+ 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();
types.write_from_c_conversion_prefix(w, &field.ty, Some(&gen_types));
}
write!(w, ") -> {} {{\n\t", struct_name).unwrap();
for field in fields.named.iter() {
- let field_name = format!("{}_arg", field.ident.as_ref().unwrap());
- if types.write_from_c_conversion_new_var(w, &syn::Ident::new(&field_name, Span::call_site()), &field.ty, Some(&gen_types)) {
+ let field_ident = format_ident!("{}_arg", field.ident.as_ref().unwrap());
+ if types.write_from_c_conversion_new_var(w, &field_ident, &field.ty, Some(&gen_types)) {
write!(w, "\n\t").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 {
if types.understood_c_type(&*i.self_ty, None) {
- let mut gen_types = GenericTypes::new();
+ let mut gen_types = GenericTypes::new(None);
if !gen_types.learn_generics(&i.generics, types) {
eprintln!("Not implementing anything for `impl (..)` due to not understood generics");
return;
if p.qself.is_some() { unimplemented!(); }
if let Some(ident) = single_ident_generic_path_to_ident(&p.path) {
if let Some(resolved_path) = types.maybe_resolve_non_ignored_ident(&ident) {
- let mut gen_types = GenericTypes::new();
+ let mut gen_types = GenericTypes::new(Some((resolved_path.clone(), &p.path)));
if !gen_types.learn_generics(&i.generics, types) {
eprintln!("Not implementing anything for impl {} due to not understood generics", ident);
return;
let export = export_status(&trait_obj.attrs);
match export {
- ExportStatus::Export => {},
+ ExportStatus::Export|ExportStatus::NotImplementable => {},
ExportStatus::NoExport|ExportStatus::TestOnly => return,
}
continue;
},
ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
let mut printed = false;
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 {
write!(w, "\t{} {{ inner: Box::into_raw(Box::new(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, "/// Creates a copy of the {}", ident).unwrap();
writeln!(w, "pub extern \"C\" fn {}_clone(orig: &{}) -> {} {{", ident, ident, ident).unwrap();
writeln!(w, "\torig.clone()").unwrap();
+ writeln!(w, "}}").unwrap();
+ } else if path_matches_nongeneric(&trait_path.1, &["FromStr"]) {
+ if let Some(container) = types.get_c_mangled_container_type(
+ vec![&*i.self_ty, &syn::Type::Tuple(syn::TypeTuple { paren_token: Default::default(), elems: syn::punctuated::Punctuated::new() })],
+ Some(&gen_types), "Result") {
+ 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_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();
+ types.write_to_c_conversion_inline_prefix(w, &*i.self_ty, Some(&gen_types), false);
+ 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(()),").unwrap();
+ writeln!(w, "\t}}.into()\n}}").unwrap();
+ }
+ } else if path_matches_nongeneric(&trait_path.1, &["Display"]) {
+ writeln!(w, "#[no_mangle]").unwrap();
+ writeln!(w, "/// Get the string representation of a {} object", ident).unwrap();
+ writeln!(w, "pub extern \"C\" fn {}_to_str(o: &crate::{}) -> Str {{", ident, resolved_path).unwrap();
+
+ let self_ty = &i.self_ty;
+ let ref_type: syn::Type = syn::parse_quote!(&#self_ty);
+ let new_var = types.write_from_c_conversion_new_var(w, &format_ident!("o"), &ref_type, Some(&gen_types));
+ write!(w, "\tformat!(\"{{}}\", ").unwrap();
+ types.write_from_c_conversion_prefix(w, &ref_type, Some(&gen_types));
+ write!(w, "{}o", if new_var { "local_" } else { "" }).unwrap();
+ types.write_from_c_conversion_suffix(w, &ref_type, Some(&gen_types));
+ writeln!(w, ").into()").unwrap();
+
writeln!(w, "}}").unwrap();
} else {
//XXX: implement for other things like ToString
match export_status(&m.attrs) {
ExportStatus::Export => {},
ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) must only appear on traits"),
}
if m.defaultness.is_some() { unimplemented!(); }
writeln_docs(w, &m.attrs, "");
write_method_var_decl_body(w, &m.sig, "", types, Some(&meth_gen_types), false);
let mut takes_self = false;
let mut takes_mut_self = false;
+ let mut takes_owned_self = false;
for inp in m.sig.inputs.iter() {
if let syn::FnArg::Receiver(r) = inp {
takes_self = true;
if r.mutability.is_some() { takes_mut_self = true; }
+ if r.reference.is_none() { takes_owned_self = true; }
}
}
- if takes_mut_self {
- write!(w, "unsafe {{ &mut (*(this_arg.inner as *mut native{})) }}.{}(", ident, m.sig.ident).unwrap();
- } else if takes_self {
- write!(w, "unsafe {{ &*this_arg.inner }}.{}(", m.sig.ident).unwrap();
- } else {
+ if !takes_mut_self && !takes_self {
write!(w, "{}::{}(", resolved_path, m.sig.ident).unwrap();
+ } else {
+ match &declared_type {
+ DeclType::MirroredEnum => write!(w, "this_arg.to_native().{}(", m.sig.ident).unwrap(),
+ DeclType::StructImported => {
+ 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();
+ } else {
+ write!(w, "unsafe {{ &*this_arg.inner }}.{}(", m.sig.ident).unwrap();
+ }
+ },
+ _ => unimplemented!(),
+ }
}
write_method_call_params(w, &m.sig, "", types, Some(&meth_gen_types), &ret_type, false);
writeln!(w, "\n}}\n").unwrap();
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) {
}
writeln_docs(w, &e.attrs, "");
- if e.generics.lt_token.is_some() {
- unimplemented!();
- }
+ let mut gen_types = GenericTypes::new(None);
+ assert!(gen_types.learn_generics(&e.generics, types));
let mut needs_free = false;
if export_status(&field.attrs) == ExportStatus::TestOnly { continue; }
writeln_docs(w, &field.attrs, "\t\t");
write!(w, "\t\t{}: ", field.ident.as_ref().unwrap()).unwrap();
- types.write_c_type(w, &field.ty, None, false);
+ types.write_c_type(w, &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, None, false);
- if idx != fields.unnamed.len() - 1 {
- write!(w, ",").unwrap();
+ let mut empty_tuple_variant = false;
+ 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;
}
}
- write!(w, ")").unwrap();
+ 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; }
+ types.write_c_type(w, &field.ty, Some(&gen_types), false);
+ if idx != fields.unnamed.len() - 1 {
+ write!(w, ",").unwrap();
+ }
+ }
+ write!(w, ")").unwrap();
+ }
}
if var.discriminant.is_some() { unimplemented!(); }
writeln!(w, ",").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();
let mut sink = ::std::io::sink();
let mut out: &mut dyn std::io::Write = if $ref { &mut sink } else { w };
let new_var = if $to_c {
- types.write_to_c_conversion_new_var(&mut out, $field_ident, &$field.ty, None, false)
+ types.write_to_c_conversion_new_var(&mut out, $field_ident, &$field.ty, Some(&gen_types), false)
} else {
- types.write_from_c_conversion_new_var(&mut out, $field_ident, &$field.ty, None)
+ types.write_from_c_conversion_new_var(&mut out, $field_ident, &$field.ty, Some(&gen_types))
};
if $ref || new_var {
if $ref {
write!(w, "let mut {}_nonref = (*{}).clone();\n\t\t\t\t", $field_ident, $field_ident).unwrap();
if new_var {
- let nonref_ident = syn::Ident::new(&format!("{}_nonref", $field_ident), Span::call_site());
+ let nonref_ident = format_ident!("{}_nonref", $field_ident);
if $to_c {
- types.write_to_c_conversion_new_var(w, &nonref_ident, &$field.ty, None, false);
+ types.write_to_c_conversion_new_var(w, &nonref_ident, &$field.ty, Some(&gen_types), false);
} else {
- types.write_from_c_conversion_new_var(w, &nonref_ident, &$field.ty, None);
+ types.write_from_c_conversion_new_var(w, &nonref_ident, &$field.ty, Some(&gen_types));
}
write!(w, "\n\t\t\t\t").unwrap();
}
} else if let syn::Fields::Unnamed(fields) = &var.fields {
write!(w, " {{\n\t\t\t\t").unwrap();
for (idx, field) in fields.unnamed.iter().enumerate() {
- handle_field_a!(field, &syn::Ident::new(&(('a' as u8 + idx as u8) as char).to_string(), Span::call_site()));
+ if !empty_tuple_variant {
+ handle_field_a!(field, &format_ident!("{}", ('a' as u8 + idx as u8) as char));
+ }
}
} else { write!(w, " ").unwrap(); }
($field: expr, $field_ident: expr) => { {
if export_status(&$field.attrs) == ExportStatus::TestOnly { continue; }
if $to_c {
- types.write_to_c_conversion_inline_prefix(w, &$field.ty, None, false);
+ types.write_to_c_conversion_inline_prefix(w, &$field.ty, Some(&gen_types), false);
} else {
- types.write_from_c_conversion_prefix(w, &$field.ty, None);
+ types.write_from_c_conversion_prefix(w, &$field.ty, Some(&gen_types));
}
write!(w, "{}{}", $field_ident,
if $ref { "_nonref" } else { "" }).unwrap();
if $to_c {
- types.write_to_c_conversion_inline_suffix(w, &$field.ty, None, false);
+ types.write_to_c_conversion_inline_suffix(w, &$field.ty, Some(&gen_types), false);
} else {
- types.write_from_c_conversion_suffix(w, &$field.ty, None);
+ types.write_from_c_conversion_suffix(w, &$field.ty, Some(&gen_types));
}
write!(w, ",").unwrap();
} }
writeln!(w, "\n\t\t\t\t}}").unwrap();
write!(w, "\t\t\t}}").unwrap();
} else if let syn::Fields::Unnamed(fields) = &var.fields {
- write!(w, " (").unwrap();
- for (idx, field) in fields.unnamed.iter().enumerate() {
- write!(w, "\n\t\t\t\t\t").unwrap();
- handle_field_b!(field, &syn::Ident::new(&(('a' as u8 + idx as u8) as char).to_string(), Span::call_site()));
+ if !empty_tuple_variant || !$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();
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();
+ let mut gen_types = GenericTypes::new(None);
if !gen_types.learn_generics(&f.sig.generics, types) { return; }
write!(w, "#[no_mangle]\npub extern \"C\" fn {}(", f.sig.ident).unwrap();
// *** File/Crate Walking Logic ***
// ********************************
+fn convert_priv_mod<'a, 'b: 'a, W: std::io::Write>(w: &mut W, libast: &'b FullLibraryAST, crate_types: &CrateTypes<'b>, out_dir: &str, mod_path: &str, module: &'b syn::ItemMod) {
+ // We want to ignore all items declared in this module (as they are not pub), but we still need
+ // to give the ImportResolver any use statements, so we copy them here.
+ let mut use_items = Vec::new();
+ for item in module.content.as_ref().unwrap().1.iter() {
+ if let syn::Item::Use(_) = item {
+ use_items.push(item);
+ }
+ }
+ let import_resolver = ImportResolver::from_borrowed_items(mod_path.splitn(2, "::").next().unwrap(), &libast.dependencies, mod_path, &use_items);
+ let mut types = TypeResolver::new(mod_path, import_resolver, crate_types);
+
+ writeln!(w, "mod {} {{\n{}", module.ident, DEFAULT_IMPORTS).unwrap();
+ for item in module.content.as_ref().unwrap().1.iter() {
+ match item {
+ syn::Item::Mod(m) => convert_priv_mod(w, libast, crate_types, out_dir, &format!("{}::{}", mod_path, module.ident), m),
+ syn::Item::Impl(i) => {
+ if let &syn::Type::Path(ref p) = &*i.self_ty {
+ if p.path.get_ident().is_some() {
+ writeln_impl(w, i, &mut types);
+ }
+ }
+ },
+ _ => {},
+ }
+ }
+ writeln!(w, "}}").unwrap();
+}
+
/// Do the Real Work of mapping an original file to C-callable wrappers. Creates a new file at
/// `out_path` and fills it with wrapper structs/functions to allow calling the things in the AST
/// at `module` from C.
writeln!(out, "#![allow(unused_parens)]").unwrap();
writeln!(out, "#![allow(unused_unsafe)]").unwrap();
writeln!(out, "#![allow(unused_braces)]").unwrap();
- writeln!(out, "#![deny(missing_docs)]").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 {
- writeln!(out, "\nuse std::ffi::c_void;\nuse bitcoin::hashes::Hash;\nuse crate::c_types::*;\n").unwrap();
+ writeln!(out, "{}", DEFAULT_IMPORTS).unwrap();
}
for m in submods {
writeln_trait(&mut out, &t, &mut type_resolver, header_file, cpp_header_file);
}
},
- syn::Item::Mod(_) => {}, // We don't have to do anything - the top loop handles these.
+ syn::Item::Mod(m) => {
+ convert_priv_mod(&mut out, libast, crate_types, out_dir, &format!("{}::{}", module, m.ident), m);
+ },
syn::Item::Const(c) => {
// Re-export any primitive-type constants.
if let syn::Visibility::Public(_) = c.vis {
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;
if process_alias {
match &*t.ty {
syn::Type::Path(p) => {
+ let t_ident = &t.ident;
+
// If its a path with no generics, assume we don't map the aliased type and map it opaque
- let mut segments = syn::punctuated::Punctuated::new();
- segments.push(syn::PathSegment {
- ident: t.ident.clone(),
- arguments: syn::PathArguments::None,
- });
- let path_obj = syn::Path { leading_colon: None, segments };
+ let path_obj = parse_quote!(#t_ident);
let args_obj = p.path.segments.last().unwrap().arguments.clone();
match crate_types.reverse_alias_map.entry(import_resolver.maybe_resolve_path(&p.path, None).unwrap()) {
hash_map::Entry::Occupied(mut e) => { e.get_mut().push((path_obj, args_obj)); },
hash_map::Entry::Vacant(e) => { e.insert(vec![(path_obj, args_obj)]); },
}
- crate_types.opaques.insert(type_path.clone(), &t.ident);
+ crate_types.opaques.insert(type_path, t_ident);
},
_ => {
crate_types.type_aliases.insert(type_path, import_resolver.resolve_imported_refs((*t.ty).clone()));
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);
projects / ldk-c-bindings / blobdiff