From: Matt Corallo Date: Mon, 26 Apr 2021 15:41:48 +0000 (+0000) Subject: Handle tuple-in-slice conversions both to *and* from C X-Git-Tag: v0.0.98~11^2~5 X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=2a9827542caa1c73a3a9024b45d758482056c8ba;p=ldk-c-bindings Handle tuple-in-slice conversions both to *and* from C --- diff --git a/c-bindings-gen/src/types.rs b/c-bindings-gen/src/types.rs index e881338..efb12b8 100644 --- a/c-bindings-gen/src/types.rs +++ b/c-bindings-gen/src/types.rs @@ -1566,7 +1566,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } fn write_conversion_inline_intern Option, DL: Fn(&mut W, &DeclType, &str, bool, bool), SC: Fn(bool) -> &'static str> + LP: Fn(&str, bool, bool) -> Option, 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 { @@ -1618,12 +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() { @@ -1632,19 +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::>()[..]").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!(); } @@ -1663,7 +1667,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } fn write_to_c_conversion_inline_prefix_inner(&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 { @@ -1690,7 +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(&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(), @@ -1719,7 +1723,7 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } fn write_from_c_conversion_prefix_inner(&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(), @@ -1737,9 +1741,11 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } fn write_from_c_conversion_suffix_inner(&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::>()[..]", - true => "[..]", + |has_inner, map_str_opt| match (has_inner, map_str_opt) { + (false, Some(map_str)) => format!(".iter(){}.collect::>()[..]", map_str), + (false, None) => ".iter().collect::>()[..]".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 { @@ -1758,7 +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(&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)) @@ -1771,9 +1777,11 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> { } pub fn write_from_c_conversion_to_ref_suffix(&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::>()[..]", - true => "[..]", + |has_inner, map_str_opt| match (has_inner, map_str_opt) { + (false, Some(map_str)) => format!(".iter(){}.collect::>()[..]", map_str), + (false, None) => ".iter().collect::>()[..]".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 {