Merge pull request #17 from TheBlueMatt/2021-04-upstream-confirm
[ldk-c-bindings] / c-bindings-gen / src / types.rs
index c8b71d6b71b93cd99a302db51496b2a247f0c9c5..b0a410e208f01e9ff6f941234df862bbb4645c90 100644 (file)
@@ -949,8 +949,6 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                        "[u8]" if is_ref => Some(("crate::c_types::u8slice::from_slice(", ")")),
                        "[usize]" if is_ref => Some(("crate::c_types::usizeslice::from_slice(", ")")),
 
-                       "bitcoin::blockdata::transaction::Transaction" if is_ref => Some(("::bitcoin::consensus::encode::serialize(", ")")),
-                       "bitcoin::blockdata::transaction::Transaction" if !is_ref => Some(("::bitcoin::consensus::encode::serialize(&", ")")),
                        "bitcoin::blockdata::block::BlockHeader" if is_ref => Some(("{ let mut s = [0u8; 80]; s[..].copy_from_slice(&::bitcoin::consensus::encode::serialize(", ")); s }")),
                        "bitcoin::blockdata::block::Block" if is_ref => Some(("::bitcoin::consensus::encode::serialize(", ")")),
                        "bitcoin::hash_types::Txid" => None,
@@ -971,11 +969,11 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                        "Option" => Some("local_"),
 
                        "[u8; 32]" if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
-                       "[u8; 32]" if is_ref => Some("&"),
+                       "[u8; 32]" if is_ref => Some(""),
                        "[u8; 16]" if !is_ref => Some("crate::c_types::SixteenBytes { data: "),
                        "[u8; 10]" if !is_ref => Some("crate::c_types::TenBytes { data: "),
                        "[u8; 4]" if !is_ref => Some("crate::c_types::FourBytes { data: "),
-                       "[u8; 3]" if is_ref => Some("&"),
+                       "[u8; 3]" if is_ref => Some(""),
 
                        "[u8]" if is_ref => Some("local_"),
                        "[usize]" if is_ref => Some("local_"),
@@ -996,7 +994,8 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                        "bitcoin::secp256k1::Error" if !is_ref => Some("crate::c_types::Secp256k1Error::from_rust("),
                        "bitcoin::blockdata::script::Script" if is_ref => Some("crate::c_types::u8slice::from_slice(&"),
                        "bitcoin::blockdata::script::Script" if !is_ref => Some(""),
-                       "bitcoin::blockdata::transaction::Transaction" => Some("crate::c_types::Transaction::from_vec(local_"),
+                       "bitcoin::blockdata::transaction::Transaction" if is_ref => Some("crate::c_types::Transaction::from_bitcoin("),
+                       "bitcoin::blockdata::transaction::Transaction" => Some("crate::c_types::Transaction::from_bitcoin(&"),
                        "bitcoin::blockdata::transaction::OutPoint" => Some("crate::c_types::bitcoin_to_C_outpoint("),
                        "bitcoin::blockdata::transaction::TxOut" if !is_ref => Some("crate::c_types::TxOut::from_rust("),
                        "bitcoin::network::constants::Network" => Some("crate::bitcoin::network::Network::from_bitcoin("),
@@ -1160,7 +1159,7 @@ 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))
+                               Some(("Vec::new(); for item in ", vec![(format!(".iter() {{ local_{}.push(", var_name), "*item".to_string())], "); }", ContainerPrefixLocation::PerConv))
                        },
                        "Option" => {
                                if let Some(syn::Type::Path(p)) = single_contained {
@@ -1459,7 +1458,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                                split.next().unwrap();
                                let tail_str = split.next().unwrap();
                                assert!(split.next().is_none());
-                               let len = &tail_str[..tail_str.len() - 1];
+                               let len = usize::from_str_radix(&tail_str[..tail_str.len() - 1], 10).unwrap();
                                Some(parse_quote!([u8; #len]))
                        } else { None }
                } else { None }
@@ -1567,7 +1566,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
        }
 
        fn write_conversion_inline_intern<W: std::io::Write,
-                       LP: Fn(&str, bool, bool) -> Option<String>, DL: Fn(&mut W, &DeclType, &str, bool, bool), SC: Fn(bool) -> &'static str>
+                       LP: Fn(&str, bool, bool) -> Option<String>, DL: Fn(&mut W, &DeclType, &str, bool, bool), SC: Fn(bool, Option<&str>) -> String>
                        (&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, is_mut: bool, ptr_for_ref: bool,
                         tupleconv: &str, prefix: bool, sliceconv: SC, path_lookup: LP, decl_lookup: DL) {
                match t {
@@ -1583,6 +1582,10 @@ 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_inline_intern(w, aliased_type, None, is_ref, is_mut, ptr_for_ref, tupleconv, prefix, sliceconv, path_lookup, decl_lookup);
+                               } else if self.is_primitive(&resolved_path) {
+                                       if is_ref && prefix {
+                                               write!(w, "*").unwrap();
+                                       }
                                } else if let Some(c_type) = path_lookup(&resolved_path, is_ref, ptr_for_ref) {
                                        write!(w, "{}", c_type).unwrap();
                                } else if self.crate_types.opaques.get(&resolved_path).is_some() {
@@ -1615,12 +1618,12 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                                        write!(w, "{}", path_lookup("[u8]", is_ref, ptr_for_ref).unwrap()).unwrap();
                                } else if let syn::Type::Reference(r) = &*s.elem {
                                        if let syn::Type::Path(p) = &*r.elem {
-                                               write!(w, "{}", sliceconv(self.c_type_has_inner_from_path(&self.resolve_path(&p.path, generics)))).unwrap();
+                                               write!(w, "{}", sliceconv(self.c_type_has_inner_from_path(&self.resolve_path(&p.path, generics)), None)).unwrap();
                                        } else { unimplemented!(); }
                                } else if let syn::Type::Tuple(t) = &*s.elem {
                                        assert!(!t.elems.is_empty());
                                        if prefix {
-                                               write!(w, "&local_").unwrap();
+                                               write!(w, "{}", sliceconv(false, None)).unwrap();
                                        } else {
                                                let mut needs_map = false;
                                                for e in t.elems.iter() {
@@ -1629,19 +1632,23 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                                                        }
                                                }
                                                if needs_map {
-                                                       write!(w, ".iter().map(|(").unwrap();
+                                                       let mut map_str = Vec::new();
+                                                       write!(&mut map_str, ".map(|(").unwrap();
                                                        for i in 0..t.elems.len() {
-                                                               write!(w, "{}{}", if i != 0 { ", " } else { "" }, ('a' as u8 + i as u8) as char).unwrap();
+                                                               write!(&mut map_str, "{}{}", if i != 0 { ", " } else { "" }, ('a' as u8 + i as u8) as char).unwrap();
                                                        }
-                                                       write!(w, ")| (").unwrap();
+                                                       write!(&mut map_str, ")| (").unwrap();
                                                        for (idx, e) in t.elems.iter().enumerate() {
                                                                if let syn::Type::Reference(_) = e {
-                                                                       write!(w, "{}{}", if idx != 0 { ", " } else { "" }, (idx as u8 + 'a' as u8) as char).unwrap();
+                                                                       write!(&mut map_str, "{}{}", if idx != 0 { ", " } else { "" }, (idx as u8 + 'a' as u8) as char).unwrap();
                                                                } else if let syn::Type::Path(_) = e {
-                                                                       write!(w, "{}*{}", if idx != 0 { ", " } else { "" }, (idx as u8 + 'a' as u8) as char).unwrap();
+                                                                       write!(&mut map_str, "{}*{}", if idx != 0 { ", " } else { "" }, (idx as u8 + 'a' as u8) as char).unwrap();
                                                                } else { unimplemented!(); }
                                                        }
-                                                       write!(w, ")).collect::<Vec<_>>()[..]").unwrap();
+                                                       write!(&mut map_str, "))").unwrap();
+                                                       write!(w, "{}", sliceconv(false, Some(&String::from_utf8(map_str).unwrap()))).unwrap();
+                                               } else {
+                                                       write!(w, "{}", sliceconv(false, None)).unwrap();
                                                }
                                        }
                                } else { unimplemented!(); }
@@ -1660,24 +1667,24 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
        }
 
        fn write_to_c_conversion_inline_prefix_inner<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, ptr_for_ref: bool, from_ptr: bool) {
-               self.write_conversion_inline_intern(w, t, generics, is_ref, false, ptr_for_ref, "0u8 /*", true, |_| "local_",
+               self.write_conversion_inline_intern(w, t, generics, is_ref, false, ptr_for_ref, "0u8 /*", true, |_, _| "local_".to_owned(),
                                |a, b, c| self.to_c_conversion_inline_prefix_from_path(a, b, c),
                                |w, decl_type, decl_path, is_ref, _is_mut| {
                                        match decl_type {
-                                               DeclType::MirroredEnum if is_ref && ptr_for_ref => write!(w, "crate::{}::from_native(&", decl_path).unwrap(),
-                                               DeclType::MirroredEnum if is_ref => write!(w, "&crate::{}::from_native(&", decl_path).unwrap(),
+                                               DeclType::MirroredEnum if is_ref && ptr_for_ref => write!(w, "crate::{}::from_native(", decl_path).unwrap(),
+                                               DeclType::MirroredEnum if is_ref => write!(w, "&crate::{}::from_native(", decl_path).unwrap(),
                                                DeclType::MirroredEnum => write!(w, "crate::{}::native_into(", decl_path).unwrap(),
                                                DeclType::EnumIgnored|DeclType::StructImported if is_ref && ptr_for_ref && from_ptr =>
                                                        write!(w, "crate::{} {{ inner: unsafe {{ (", decl_path).unwrap(),
                                                DeclType::EnumIgnored|DeclType::StructImported if is_ref && ptr_for_ref =>
-                                                       write!(w, "crate::{} {{ inner: unsafe {{ ( (&(", decl_path).unwrap(),
+                                                       write!(w, "crate::{} {{ inner: unsafe {{ ( (&(*", decl_path).unwrap(),
                                                DeclType::EnumIgnored|DeclType::StructImported if is_ref =>
                                                        write!(w, "&crate::{} {{ inner: unsafe {{ (", decl_path).unwrap(),
                                                DeclType::EnumIgnored|DeclType::StructImported if !is_ref && from_ptr =>
                                                        write!(w, "crate::{} {{ inner: ", decl_path).unwrap(),
                                                DeclType::EnumIgnored|DeclType::StructImported if !is_ref =>
                                                        write!(w, "crate::{} {{ inner: Box::into_raw(Box::new(", decl_path).unwrap(),
-                                               DeclType::Trait(_) if is_ref => write!(w, "&").unwrap(),
+                                               DeclType::Trait(_) if is_ref => write!(w, "").unwrap(),
                                                DeclType::Trait(_) if !is_ref => {},
                                                _ => panic!("{:?}", decl_path),
                                        }
@@ -1687,7 +1694,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
                self.write_to_c_conversion_inline_prefix_inner(w, t, generics, false, ptr_for_ref, false);
        }
        fn write_to_c_conversion_inline_suffix_inner<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, ptr_for_ref: bool, from_ptr: bool) {
-               self.write_conversion_inline_intern(w, t, generics, is_ref, false, ptr_for_ref, "*/", false, |_| ".into()",
+               self.write_conversion_inline_intern(w, t, generics, is_ref, false, ptr_for_ref, "*/", false, |_, _| ".into()".to_owned(),
                                |a, b, c| self.to_c_conversion_inline_suffix_from_path(a, b, c),
                                |w, decl_type, _full_path, is_ref, _is_mut| match decl_type {
                                        DeclType::MirroredEnum => write!(w, ")").unwrap(),
@@ -1716,7 +1723,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
        }
 
        fn write_from_c_conversion_prefix_inner<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, ptr_for_ref: bool) {
-               self.write_conversion_inline_intern(w, t, generics, is_ref, false, false, "() /*", true, |_| "&local_",
+               self.write_conversion_inline_intern(w, t, generics, is_ref, false, false, "() /*", true, |_, _| "&local_".to_owned(),
                                |a, b, _c| self.from_c_conversion_prefix_from_path(a, b),
                                |w, decl_type, _full_path, is_ref, is_mut| match decl_type {
                                        DeclType::StructImported if is_ref && ptr_for_ref => write!(w, "unsafe {{ &*(*").unwrap(),
@@ -1734,9 +1741,11 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
        }
        fn write_from_c_conversion_suffix_inner<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, ptr_for_ref: bool) {
                self.write_conversion_inline_intern(w, t, generics, is_ref, false, false, "*/", false,
-                               |has_inner| match has_inner {
-                                       false => ".iter().collect::<Vec<_>>()[..]",
-                                       true => "[..]",
+                               |has_inner, map_str_opt| match (has_inner, map_str_opt) {
+                                       (false, Some(map_str)) => format!(".iter(){}.collect::<Vec<_>>()[..]", map_str),
+                                       (false, None) => ".iter().collect::<Vec<_>>()[..]".to_owned(),
+                                       (true, None) => "[..]".to_owned(),
+                                       (true, Some(_)) => unreachable!(),
                                },
                                |a, b, _c| self.from_c_conversion_suffix_from_path(a, b),
                                |w, decl_type, _full_path, is_ref, _is_mut| match decl_type {
@@ -1755,7 +1764,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
        // Note that compared to the above conversion functions, the following two are generally
        // significantly undertested:
        pub fn write_from_c_conversion_to_ref_prefix<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>) {
-               self.write_conversion_inline_intern(w, t, generics, false, false, false, "() /*", true, |_| "&local_",
+               self.write_conversion_inline_intern(w, t, generics, false, false, false, "() /*", true, |_, _| "&local_".to_owned(),
                                |a, b, _c| {
                                        if let Some(conv) = self.from_c_conversion_prefix_from_path(a, b) {
                                                Some(format!("&{}", conv))
@@ -1768,9 +1777,11 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
        }
        pub fn write_from_c_conversion_to_ref_suffix<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>) {
                self.write_conversion_inline_intern(w, t, generics, false, false, false, "*/", false,
-                               |has_inner| match has_inner {
-                                       false => ".iter().collect::<Vec<_>>()[..]",
-                                       true => "[..]",
+                               |has_inner, map_str_opt| match (has_inner, map_str_opt) {
+                                       (false, Some(map_str)) => format!(".iter(){}.collect::<Vec<_>>()[..]", map_str),
+                                       (false, None) => ".iter().collect::<Vec<_>>()[..]".to_owned(),
+                                       (true, None) => "[..]".to_owned(),
+                                       (true, Some(_)) => unreachable!(),
                                },
                                |a, b, _c| self.from_c_conversion_suffix_from_path(a, b),
                                |w, decl_type, _full_path, is_ref, _is_mut| match decl_type {