} else { None }
}
-pub fn attrs_derives_clone(attrs: &[syn::Attribute]) -> bool {
- for attr in attrs.iter() {
- let tokens_clone = attr.tokens.clone();
- let mut token_iter = tokens_clone.into_iter();
- if let Some(token) = token_iter.next() {
- match token {
- TokenTree::Group(g) => {
- if format!("{}", single_ident_generic_path_to_ident(&attr.path).unwrap()) == "derive" {
- for id in g.stream().into_iter() {
- if let TokenTree::Ident(i) = id {
- if i == "Clone" {
- return true;
- }
- }
- }
- }
- },
- _ => {},
- }
- }
+pub fn path_matches_nongeneric(p: &syn::Path, exp: &[&str]) -> bool {
+ if p.segments.len() != exp.len() { return false; }
+ for (seg, e) in p.segments.iter().zip(exp.iter()) {
+ if seg.arguments != syn::PathArguments::None { return false; }
+ if &format!("{}", seg.ident) != *e { return false; }
}
- false
+ true
}
#[derive(Debug, PartialEq)]
if let syn::TraitBoundModifier::Maybe(_) = bound.modifier { unimplemented!(); }
}
+/// Returns true if the enum will be mapped as an opaue (ie struct with a pointer to the underlying
+/// type), otherwise it is mapped into a transparent, C-compatible version of itself.
+pub fn is_enum_opaque(e: &syn::ItemEnum) -> bool {
+ for var in e.variants.iter() {
+ if let syn::Fields::Unit = var.fields {
+ } else if let syn::Fields::Named(fields) = &var.fields {
+ for field in fields.named.iter() {
+ match export_status(&field.attrs) {
+ ExportStatus::Export|ExportStatus::TestOnly => {},
+ ExportStatus::NoExport => return true,
+ }
+ }
+ } else {
+ return true;
+ }
+ }
+ false
+}
+
/// A stack of sets of generic resolutions.
///
/// This tracks the template parameters for a function, struct, or trait, allowing resolution into
if let Some(ident) = single_ident_generic_path_to_ident(&trait_bound.path) {
match &format!("{}", ident) as &str { "Send" => continue, "Sync" => continue, _ => {} }
}
+ if path_matches_nongeneric(&trait_bound.path, &["core", "clone", "Clone"]) { continue; }
assert_simple_bound(&trait_bound);
if let Some(mut path) = types.maybe_resolve_path(&trait_bound.path, None) {
EnumIgnored,
}
+pub struct ImportResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> {
+ module_path: &'mod_lifetime str,
+ imports: HashMap<syn::Ident, (String, syn::Path)>,
+ declared: HashMap<syn::Ident, DeclType<'crate_lft>>,
+ priv_modules: HashSet<syn::Ident>,
+}
+impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'crate_lft> {
+ fn process_use_intern(imports: &mut HashMap<syn::Ident, (String, syn::Path)>, u: &syn::UseTree, partial_path: &str, mut path: syn::punctuated::Punctuated<syn::PathSegment, syn::token::Colon2>) {
+ match u {
+ syn::UseTree::Path(p) => {
+ 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);
+ 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)), segments: path }));
+ },
+ syn::UseTree::Group(g) => {
+ for i in g.items.iter() {
+ Self::process_use_intern(imports, i, partial_path, path.clone());
+ }
+ },
+ syn::UseTree::Rename(r) => {
+ 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)), segments: path }));
+ },
+ syn::UseTree::Glob(_) => {
+ eprintln!("Ignoring * use for {} - this may result in resolution failures", partial_path);
+ },
+ }
+ }
+
+ fn process_use(imports: &mut HashMap<syn::Ident, (String, syn::Path)>, 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; }
+ Self::process_use_intern(imports, &u.tree, "", syn::punctuated::Punctuated::new());
+ }
+
+ fn insert_primitive(imports: &mut HashMap<syn::Ident, (String, syn::Path)>, 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)), 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:
+ 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:
+ Self::insert_primitive(&mut imports, "Result");
+ Self::insert_primitive(&mut imports, "Vec");
+ Self::insert_primitive(&mut imports, "Option");
+
+ let mut declared = HashMap::new();
+ let mut priv_modules = HashSet::new();
+
+ for item in contents.iter() {
+ match item {
+ syn::Item::Use(u) => Self::process_use(&mut imports, &u),
+ syn::Item::Struct(s) => {
+ if let syn::Visibility::Public(_) = s.vis {
+ match export_status(&s.attrs) {
+ ExportStatus::Export => { declared.insert(s.ident.clone(), DeclType::StructImported); },
+ ExportStatus::NoExport => { declared.insert(s.ident.clone(), DeclType::StructIgnored); },
+ ExportStatus::TestOnly => continue,
+ }
+ }
+ },
+ syn::Item::Enum(e) => {
+ if let syn::Visibility::Public(_) = e.vis {
+ match export_status(&e.attrs) {
+ ExportStatus::Export if is_enum_opaque(e) => { declared.insert(e.ident.clone(), DeclType::EnumIgnored); },
+ ExportStatus::Export => { declared.insert(e.ident.clone(), DeclType::MirroredEnum); },
+ _ => continue,
+ }
+ }
+ },
+ syn::Item::Trait(t) if export_status(&t.attrs) == ExportStatus::Export => {
+ if let syn::Visibility::Public(_) = t.vis {
+ declared.insert(t.ident.clone(), DeclType::Trait(t));
+ }
+ },
+ syn::Item::Mod(m) => {
+ priv_modules.insert(m.ident.clone());
+ },
+ _ => {},
+ }
+ }
+
+ Self { module_path, imports, declared, priv_modules }
+ }
+
+ pub fn get_declared_type(&self, ident: &syn::Ident) -> Option<&DeclType<'crate_lft>> {
+ self.declared.get(ident)
+ }
+
+ pub fn maybe_resolve_declared(&self, id: &syn::Ident) -> Option<&DeclType<'crate_lft>> {
+ self.declared.get(id)
+ }
+
+ pub fn maybe_resolve_ident(&self, id: &syn::Ident) -> Option<String> {
+ 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))
+ } else { None }
+ }
+
+ pub fn maybe_resolve_non_ignored_ident(&self, id: &syn::Ident) -> Option<String> {
+ if let Some((imp, _)) = self.imports.get(id) {
+ Some(imp.clone())
+ } else if let Some(decl_type) = self.declared.get(id) {
+ match decl_type {
+ DeclType::StructIgnored => None,
+ _ => Some(self.module_path.to_string() + "::" + &format!("{}", id)),
+ }
+ } else { None }
+ }
+
+ pub fn maybe_resolve_path(&self, p_arg: &syn::Path, generics: Option<&GenericTypes>) -> Option<String> {
+ let p = if let Some(gen_types) = generics {
+ if let Some((_, synpath)) = gen_types.maybe_resolve_path(p_arg) {
+ synpath
+ } else { p_arg }
+ } else { p_arg };
+
+ if p.leading_colon.is_some() {
+ Some(p.segments.iter().enumerate().map(|(idx, seg)| {
+ format!("{}{}", if idx == 0 { "" } else { "::" }, seg.ident)
+ }).collect())
+ } else if let Some(id) = p.get_ident() {
+ self.maybe_resolve_ident(id)
+ } else {
+ if p.segments.len() == 1 {
+ let seg = p.segments.iter().next().unwrap();
+ return self.maybe_resolve_ident(&seg.ident);
+ }
+ let mut seg_iter = p.segments.iter();
+ let first_seg = seg_iter.next().unwrap();
+ let remaining: String = seg_iter.map(|seg| {
+ format!("::{}", seg.ident)
+ }).collect();
+ if let Some((imp, _)) = self.imports.get(&first_seg.ident) {
+ if remaining != "" {
+ Some(imp.clone() + &remaining)
+ } else {
+ Some(imp.clone())
+ }
+ } else if let Some(_) = self.priv_modules.get(&first_seg.ident) {
+ Some(format!("{}::{}{}", self.module_path, first_seg.ident, remaining))
+ } 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
// reordered on each genbindings run. Instead, we use SipHasher (which defaults to 0-keys) so that
// the sorting is stable across runs. It is deprecated, but the "replacement" doesn't actually
// accomplish the same goals, so we just ignore it.
#[allow(deprecated)]
-type NonRandomHash = hash::BuildHasherDefault<hash::SipHasher>;
+pub type NonRandomHash = hash::BuildHasherDefault<hash::SipHasher>;
/// Top-level struct tracking everything which has been defined while walking the crate.
pub struct CrateTypes<'a> {
pub struct TypeResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> {
pub orig_crate: &'mod_lifetime str,
pub module_path: &'mod_lifetime str,
- imports: HashMap<syn::Ident, String>,
- // ident -> is-mirrored-enum
- declared: HashMap<syn::Ident, DeclType<'crate_lft>>,
pub crate_types: &'mod_lifetime mut CrateTypes<'crate_lft>,
+ types: ImportResolver<'mod_lifetime, 'crate_lft>,
}
/// Returned by write_empty_rust_val_check_suffix to indicate what type of dereferencing needs to
}
impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
- pub fn new(orig_crate: &'a str, module_path: &'a str, crate_types: &'a mut CrateTypes<'c>) -> 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());
-
- // 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 { orig_crate, module_path, imports, declared: HashMap::new(), crate_types }
+ pub fn new(orig_crate: &'a str, module_path: &'a str, types: ImportResolver<'a, 'c>, crate_types: &'a mut CrateTypes<'c>) -> Self {
+ Self { orig_crate, module_path, types, crate_types }
}
// *************************************************
// *** Type definition during main.rs processing ***
// *************************************************
- fn process_use_intern<W: std::io::Write>(&mut self, w: &mut W, u: &syn::UseTree, partial_path: &str) {
- match u {
- syn::UseTree::Path(p) => {
- let new_path = format!("{}::{}", partial_path, p.ident);
- self.process_use_intern(w, &p.tree, &new_path);
- },
- syn::UseTree::Name(n) => {
- let full_path = format!("{}::{}", partial_path, n.ident);
- self.imports.insert(n.ident.clone(), full_path);
- },
- syn::UseTree::Group(g) => {
- for i in g.items.iter() {
- self.process_use_intern(w, i, partial_path);
- }
- },
- syn::UseTree::Rename(r) => {
- let full_path = format!("{}::{}", partial_path, r.ident);
- self.imports.insert(r.rename.clone(), full_path);
- },
- syn::UseTree::Glob(_) => {
- eprintln!("Ignoring * use for {} - this may result in resolution failures", partial_path);
- },
- }
- }
- pub fn process_use<W: std::io::Write>(&mut self, w: &mut W, u: &syn::ItemUse) {
- if let syn::Visibility::Public(_) = u.vis {
- // We actually only use these for #[cfg(fuzztarget)]
- eprintln!("Ignoring pub(use) tree!");
- return;
- }
- match &u.tree {
- syn::UseTree::Path(p) => {
- let new_path = format!("{}", p.ident);
- self.process_use_intern(w, &p.tree, &new_path);
- },
- syn::UseTree::Name(n) => {
- let full_path = format!("{}", n.ident);
- self.imports.insert(n.ident.clone(), full_path);
- },
- _ => unimplemented!(),
- }
- if u.leading_colon.is_some() { unimplemented!() }
- }
-
- pub fn mirrored_enum_declared(&mut self, ident: &syn::Ident) {
- self.declared.insert(ident.clone(), DeclType::MirroredEnum);
- }
- pub fn enum_ignored(&mut self, ident: &'c syn::Ident) {
- self.declared.insert(ident.clone(), DeclType::EnumIgnored);
- }
- pub fn struct_imported(&mut self, ident: &'c syn::Ident) {
- self.declared.insert(ident.clone(), DeclType::StructImported);
- }
- pub fn struct_ignored(&mut self, ident: &syn::Ident) {
- eprintln!("Not importing {}", ident);
- self.declared.insert(ident.clone(), DeclType::StructIgnored);
- }
- pub fn trait_declared(&mut self, ident: &syn::Ident, t: &'c syn::ItemTrait) {
- self.declared.insert(ident.clone(), DeclType::Trait(t));
- }
pub fn get_declared_type(&'a self, ident: &syn::Ident) -> Option<&'a DeclType<'c>> {
- self.declared.get(ident)
+ self.types.get_declared_type(ident)
}
/// Returns true if the object at the given path is mapped as X { inner: *mut origX, .. }.
pub fn c_type_has_inner_from_path(&self, full_path: &str) -> bool{
}
pub fn maybe_resolve_ident(&self, id: &syn::Ident) -> Option<String> {
- 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))
- } else { None }
+ self.types.maybe_resolve_ident(id)
}
pub fn maybe_resolve_non_ignored_ident(&self, id: &syn::Ident) -> Option<String> {
- if let Some(imp) = self.imports.get(id) {
- Some(imp.clone())
- } else if let Some(decl_type) = self.declared.get(id) {
- match decl_type {
- DeclType::StructIgnored => None,
- _ => Some(self.module_path.to_string() + "::" + &format!("{}", id)),
- }
- } else { None }
+ self.types.maybe_resolve_non_ignored_ident(id)
}
pub fn maybe_resolve_path(&self, p_arg: &syn::Path, generics: Option<&GenericTypes>) -> Option<String> {
- let p = if let Some(gen_types) = generics {
- if let Some((_, synpath)) = gen_types.maybe_resolve_path(p_arg) {
- synpath
- } else { p_arg }
- } else { p_arg };
-
- if p.leading_colon.is_some() {
- Some(p.segments.iter().enumerate().map(|(idx, seg)| {
- format!("{}{}", if idx == 0 { "" } else { "::" }, seg.ident)
- }).collect())
- } else if let Some(id) = p.get_ident() {
- self.maybe_resolve_ident(id)
- } else {
- if p.segments.len() == 1 {
- let seg = p.segments.iter().next().unwrap();
- return self.maybe_resolve_ident(&seg.ident);
- }
- let mut seg_iter = p.segments.iter();
- let first_seg = seg_iter.next().unwrap();
- let remaining: String = seg_iter.map(|seg| {
- format!("::{}", seg.ident)
- }).collect();
- if let Some(imp) = self.imports.get(&first_seg.ident) {
- if remaining != "" {
- Some(imp.clone() + &remaining)
- } else {
- Some(imp.clone())
- }
- } else { None }
- }
+ self.types.maybe_resolve_path(p_arg, generics)
}
pub fn resolve_path(&self, p: &syn::Path, generics: Option<&GenericTypes>) -> String {
self.maybe_resolve_path(p, generics).unwrap()
} else if let Some(t) = self.crate_types.traits.get(&resolved_path) {
decl_lookup(w, &DeclType::Trait(t), &resolved_path, is_ref, is_mut);
} else if let Some(ident) = single_ident_generic_path_to_ident(&p.path) {
- if let Some(_) = self.imports.get(ident) {
- // crate_types lookup has to have succeeded:
- panic!("Failed to print inline conversion for {}", ident);
- } else if let Some(decl_type) = self.declared.get(ident) {
+ if let Some(decl_type) = self.types.maybe_resolve_declared(ident) {
decl_lookup(w, decl_type, &self.maybe_resolve_ident(ident).unwrap(), is_ref, is_mut);
} else { unimplemented!(); }
} else { unimplemented!(); }
if let Some((prefix, suffix)) = path_lookup(&resolved_path, is_ref) {
write!(w, "let mut local_{} = {}{}{};", ident, prefix, var, suffix).unwrap();
true
- } else if self.declared.get(ty_ident).is_some() {
+ } else if self.types.maybe_resolve_declared(ty_ident).is_some() {
false
} else { false }
} else { false }
projects / rust-lightning / blobdiff