X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;ds=sidebyside;f=c-bindings-gen%2Fsrc%2Ftypes.rs;fp=c-bindings-gen%2Fsrc%2Ftypes.rs;h=cba9407ae1200b2b693cf7b8ac169b1b918b2e10;hb=3bbecbef21ec3bf3f4f665128cbf254d85374e6e;hp=46973e0b17cfdf95db52cf18dea481f242674a91;hpb=494e0fd8a01dc0b7dfa61f14782805dd7da92395;p=rust-lightning diff --git a/c-bindings-gen/src/types.rs b/c-bindings-gen/src/types.rs index 46973e0b..cba9407a 100644 --- a/c-bindings-gen/src/types.rs +++ b/c-bindings-gen/src/types.rs @@ -300,28 +300,31 @@ pub enum DeclType<'a> { pub struct ImportResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> { module_path: &'mod_lifetime str, - imports: HashMap, + imports: HashMap, declared: HashMap>, } impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'crate_lft> { - fn process_use_intern(imports: &mut HashMap, u: &syn::UseTree, partial_path: &str) { + fn process_use_intern(imports: &mut HashMap, u: &syn::UseTree, partial_path: &str, mut path: syn::punctuated::Punctuated) { match u { syn::UseTree::Path(p) => { - let new_path = format!("{}::{}", partial_path, p.ident); - Self::process_use_intern(imports, &p.tree, &new_path); + let new_path = format!("{}{}::", partial_path, p.ident); + path.push(syn::PathSegment { ident: p.ident.clone(), arguments: syn::PathArguments::None }); + Self::process_use_intern(imports, &p.tree, &new_path, path); }, syn::UseTree::Name(n) => { - let full_path = format!("{}::{}", partial_path, n.ident); - imports.insert(n.ident.clone(), full_path); + let full_path = format!("{}{}", partial_path, n.ident); + path.push(syn::PathSegment { ident: n.ident.clone(), arguments: syn::PathArguments::None }); + imports.insert(n.ident.clone(), (full_path, syn::Path { leading_colon: Some(syn::Token![::](Span::call_site())), segments: path })); }, syn::UseTree::Group(g) => { for i in g.items.iter() { - Self::process_use_intern(imports, i, partial_path); + Self::process_use_intern(imports, i, partial_path, path.clone()); } }, syn::UseTree::Rename(r) => { - let full_path = format!("{}::{}", partial_path, r.ident); - imports.insert(r.rename.clone(), full_path); + let full_path = format!("{}{}", partial_path, r.ident); + path.push(syn::PathSegment { ident: r.ident.clone(), arguments: syn::PathArguments::None }); + imports.insert(r.rename.clone(), (full_path, syn::Path { leading_colon: Some(syn::Token![::](Span::call_site())), segments: path })); }, syn::UseTree::Glob(_) => { eprintln!("Ignoring * use for {} - this may result in resolution failures", partial_path); @@ -329,43 +332,40 @@ impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'cr } } - pub fn process_use(imports: &mut HashMap, u: &syn::ItemUse) { + fn process_use(imports: &mut HashMap, u: &syn::ItemUse) { if let syn::Visibility::Public(_) = u.vis { // We actually only use these for #[cfg(fuzztarget)] eprintln!("Ignoring pub(use) tree!"); return; } if u.leading_colon.is_some() { eprintln!("Ignoring leading-colon use!"); return; } - match &u.tree { - syn::UseTree::Path(p) => { - let new_path = format!("{}", p.ident); - Self::process_use_intern(imports, &p.tree, &new_path); - }, - syn::UseTree::Name(n) => { - let full_path = format!("{}", n.ident); - imports.insert(n.ident.clone(), full_path); - }, - _ => unimplemented!(), - } + Self::process_use_intern(imports, &u.tree, "", syn::punctuated::Punctuated::new()); + } + + fn insert_primitive(imports: &mut HashMap, id: &str) { + let ident = syn::Ident::new(id, Span::call_site()); + let mut path = syn::punctuated::Punctuated::new(); + path.push(syn::PathSegment { ident: ident.clone(), arguments: syn::PathArguments::None }); + imports.insert(ident, (id.to_owned(), syn::Path { leading_colon: Some(syn::Token![::](Span::call_site())), segments: path })); } pub fn new(module_path: &'mod_lifetime str, contents: &'crate_lft [syn::Item]) -> Self { let mut imports = HashMap::new(); // Add primitives to the "imports" list: - imports.insert(syn::Ident::new("bool", Span::call_site()), "bool".to_string()); - imports.insert(syn::Ident::new("u64", Span::call_site()), "u64".to_string()); - imports.insert(syn::Ident::new("u32", Span::call_site()), "u32".to_string()); - imports.insert(syn::Ident::new("u16", Span::call_site()), "u16".to_string()); - imports.insert(syn::Ident::new("u8", Span::call_site()), "u8".to_string()); - imports.insert(syn::Ident::new("usize", Span::call_site()), "usize".to_string()); - imports.insert(syn::Ident::new("str", Span::call_site()), "str".to_string()); - imports.insert(syn::Ident::new("String", Span::call_site()), "String".to_string()); + Self::insert_primitive(&mut imports, "bool"); + Self::insert_primitive(&mut imports, "u64"); + Self::insert_primitive(&mut imports, "u32"); + Self::insert_primitive(&mut imports, "u16"); + Self::insert_primitive(&mut imports, "u8"); + Self::insert_primitive(&mut imports, "usize"); + Self::insert_primitive(&mut imports, "str"); + Self::insert_primitive(&mut imports, "String"); // These are here to allow us to print native Rust types in trait fn impls even if we don't // have C mappings: - imports.insert(syn::Ident::new("Result", Span::call_site()), "Result".to_string()); - imports.insert(syn::Ident::new("Vec", Span::call_site()), "Vec".to_string()); - imports.insert(syn::Ident::new("Option", Span::call_site()), "Option".to_string()); + Self::insert_primitive(&mut imports, "Result"); + Self::insert_primitive(&mut imports, "Vec"); + Self::insert_primitive(&mut imports, "Option"); let mut declared = HashMap::new(); @@ -411,7 +411,7 @@ impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'cr } pub fn maybe_resolve_ident(&self, id: &syn::Ident) -> Option { - if let Some(imp) = self.imports.get(id) { + if let Some((imp, _)) = self.imports.get(id) { Some(imp.clone()) } else if self.declared.get(id).is_some() { Some(self.module_path.to_string() + "::" + &format!("{}", id)) @@ -419,7 +419,7 @@ impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'cr } pub fn maybe_resolve_non_ignored_ident(&self, id: &syn::Ident) -> Option { - if let Some(imp) = self.imports.get(id) { + if let Some((imp, _)) = self.imports.get(id) { Some(imp.clone()) } else if let Some(decl_type) = self.declared.get(id) { match decl_type { @@ -452,7 +452,7 @@ impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'cr let remaining: String = seg_iter.map(|seg| { format!("::{}", seg.ident) }).collect(); - if let Some(imp) = self.imports.get(&first_seg.ident) { + if let Some((imp, _)) = self.imports.get(&first_seg.ident) { if remaining != "" { Some(imp.clone() + &remaining) } else { @@ -461,6 +461,32 @@ impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'cr } else { None } } } + + /// Map all the Paths in a Type into absolute paths given a set of imports (generated via process_use_intern) + pub fn resolve_imported_refs(&self, mut ty: syn::Type) -> syn::Type { + match &mut ty { + syn::Type::Path(p) => { + if let Some(ident) = p.path.get_ident() { + if let Some((_, newpath)) = self.imports.get(ident) { + p.path = newpath.clone(); + } + } else { unimplemented!(); } + }, + syn::Type::Reference(r) => { + r.elem = Box::new(self.resolve_imported_refs((*r.elem).clone())); + }, + syn::Type::Slice(s) => { + s.elem = Box::new(self.resolve_imported_refs((*s.elem).clone())); + }, + syn::Type::Tuple(t) => { + for e in t.elems.iter_mut() { + *e = self.resolve_imported_refs(e.clone()); + } + }, + _ => unimplemented!(), + } + ty + } } // templates_defined is walked to write the C++ header, so if we use the default hashing it get