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_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);
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;
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;
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()) {{", resolved_path).unwrap();
+ writeln!(w, "\t\tOk(r) => {{").unwrap();
+ let new_var = types.write_to_c_conversion_new_var(w, &syn::Ident::new("r", Span::call_site()), &*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(0u8),").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: &{}) -> Str {{", ident, resolved_path).unwrap();
+ writeln!(w, "\tformat!(\"{{}}\", o).into()").unwrap();
+ writeln!(w, "}}").unwrap();
} else {
//XXX: implement for other things like ToString
// If we have no generics, try a manual implementation:
}
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 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 {