+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE>
+// or the MIT license <LICENSE-MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+use std::cell::RefCell;
use std::collections::{HashMap, HashSet};
use std::fs::File;
use std::io::Write;
use crate::blocks::*;
use proc_macro2::{TokenTree, Span};
+use quote::format_ident;
+use syn::parse_quote;
// The following utils are used purely to build our known types maps - they break down all the
// types we need to resolve to include the given object, and no more.
} else { None }
}
+pub fn first_seg_is_stdlib(first_seg_str: &str) -> bool {
+ first_seg_str == "std" || first_seg_str == "core" || first_seg_str == "alloc"
+}
+
pub fn single_ident_generic_path_to_ident(p: &syn::Path) -> Option<&syn::Ident> {
if p.segments.len() == 1 {
Some(&p.segments.iter().next().unwrap().ident)
Export,
NoExport,
TestOnly,
+ /// This is used only for traits to indicate that users should not be able to implement their
+ /// own version of a trait, but we should export Rust implementations of the trait (and the
+ /// trait itself).
+ /// Concretly, this means that we do not implement the Rust trait for the C trait struct.
+ NotImplementable,
}
/// Gets the ExportStatus of an object (struct, fn, etc) given its attributes.
pub fn export_status(attrs: &[syn::Attribute]) -> ExportStatus {
if i == "any" {
// #[cfg(any(test, feature = ""))]
if let TokenTree::Group(g) = iter.next().unwrap() {
- if let TokenTree::Ident(i) = g.stream().into_iter().next().unwrap() {
- if i == "test" || i == "feature" {
- // If its cfg(feature(...)) we assume its test-only
- return ExportStatus::TestOnly;
+ let mut all_test = true;
+ for token in g.stream().into_iter() {
+ if let TokenTree::Ident(i) = token {
+ match format!("{}", i).as_str() {
+ "test" => {},
+ "feature" => {},
+ _ => all_test = false,
+ }
+ } else if let TokenTree::Literal(lit) = token {
+ if format!("{}", lit) != "fuzztarget" {
+ all_test = false;
+ }
}
}
+ if all_test { return ExportStatus::TestOnly; }
}
} else if i == "test" || i == "feature" {
// If its cfg(feature(...)) we assume its test-only
let line = format!("{}", lit);
if line.contains("(C-not exported)") {
return ExportStatus::NoExport;
+ } else if line.contains("(C-not implementable)") {
+ return ExportStatus::NotImplementable;
}
},
_ => unimplemented!(),
for field in fields.named.iter() {
match export_status(&field.attrs) {
ExportStatus::Export|ExportStatus::TestOnly => {},
+ ExportStatus::NotImplementable => panic!("(C-not implementable) should only appear on traits!"),
ExportStatus::NoExport => return true,
}
}
for field in fields.unnamed.iter() {
match export_status(&field.attrs) {
ExportStatus::Export|ExportStatus::TestOnly => {},
+ ExportStatus::NotImplementable => panic!("(C-not implementable) should only appear on traits!"),
ExportStatus::NoExport => return true,
}
}
/// It maps both direct types as well as Deref<Target = X>, mapping them via the provided
/// TypeResolver's resolve_path function (ie traits map to the concrete jump table, structs to the
/// concrete C container struct, etc).
-pub struct GenericTypes<'a> {
- typed_generics: Vec<HashMap<&'a syn::Ident, (String, Option<&'a syn::Path>)>>,
+#[must_use]
+pub struct GenericTypes<'a, 'b> {
+ self_ty: Option<String>,
+ parent: Option<&'b GenericTypes<'b, 'b>>,
+ typed_generics: HashMap<&'a syn::Ident, String>,
+ default_generics: HashMap<&'a syn::Ident, (syn::Type, syn::Type)>,
}
-impl<'a> GenericTypes<'a> {
- pub fn new() -> Self {
- Self { typed_generics: vec![HashMap::new()], }
+impl<'a, 'p: 'a> GenericTypes<'a, 'p> {
+ pub fn new(self_ty: Option<String>) -> Self {
+ Self { self_ty, parent: None, typed_generics: HashMap::new(), default_generics: HashMap::new(), }
}
/// push a new context onto the stack, allowing for a new set of generics to be learned which
/// will override any lower contexts, but which will still fall back to resoltion via lower
/// contexts.
- pub fn push_ctx(&mut self) {
- self.typed_generics.push(HashMap::new());
- }
- /// pop the latest context off the stack.
- pub fn pop_ctx(&mut self) {
- self.typed_generics.pop();
+ pub fn push_ctx<'c>(&'c self) -> GenericTypes<'a, 'c> {
+ GenericTypes { self_ty: None, parent: Some(self), typed_generics: HashMap::new(), default_generics: HashMap::new(), }
}
/// Learn the generics in generics in the current context, given a TypeResolver.
pub fn learn_generics<'b, 'c>(&mut self, generics: &'a syn::Generics, types: &'b TypeResolver<'a, 'c>) -> bool {
+ let mut new_typed_generics = HashMap::new();
// First learn simple generics...
for generic in generics.params.iter() {
match generic {
syn::GenericParam::Type(type_param) => {
let mut non_lifetimes_processed = false;
- for bound in type_param.bounds.iter() {
+ 'bound_loop: for bound in type_param.bounds.iter() {
if let syn::TypeParamBound::Trait(trait_bound) = bound {
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) {
+ if let Some(path) = types.maybe_resolve_path(&trait_bound.path, None) {
if types.skip_path(&path) { continue; }
+ if path == "Sized" { continue; }
if non_lifetimes_processed { return false; }
non_lifetimes_processed = true;
- let new_ident = if path != "std::ops::Deref" {
- path = "crate::".to_string() + &path;
- Some(&trait_bound.path)
- } else { None };
- self.typed_generics.last_mut().unwrap().insert(&type_param.ident, (path, new_ident));
- } else { return false; }
+ if path != "std::ops::Deref" && path != "core::ops::Deref" {
+ new_typed_generics.insert(&type_param.ident, Some(path));
+ } else if trait_bound.path.segments.len() == 1 {
+ // If we're templated on Deref<Target = ConcreteThing>, store
+ // the reference type in `default_generics` which handles full
+ // types and not just paths.
+ if let syn::PathArguments::AngleBracketed(ref args) =
+ trait_bound.path.segments[0].arguments {
+ for subargument in args.args.iter() {
+ match subargument {
+ syn::GenericArgument::Lifetime(_) => {},
+ syn::GenericArgument::Binding(ref b) => {
+ if &format!("{}", b.ident) != "Target" { return false; }
+ let default = &b.ty;
+ self.default_generics.insert(&type_param.ident, (parse_quote!(&#default), parse_quote!(&#default)));
+ break 'bound_loop;
+ },
+ _ => unimplemented!(),
+ }
+ }
+ } else {
+ new_typed_generics.insert(&type_param.ident, None);
+ }
+ }
+ }
}
}
+ if let Some(default) = type_param.default.as_ref() {
+ assert!(type_param.bounds.is_empty());
+ self.default_generics.insert(&type_param.ident, (default.clone(), parse_quote!(&#default)));
+ }
},
_ => {},
}
if p.qself.is_some() { return false; }
if p.path.leading_colon.is_some() { return false; }
let mut p_iter = p.path.segments.iter();
- if let Some(gen) = self.typed_generics.last_mut().unwrap().get_mut(&p_iter.next().unwrap().ident) {
- if gen.0 != "std::ops::Deref" { return false; }
- if &format!("{}", p_iter.next().unwrap().ident) != "Target" { return false; }
+ if let Some(gen) = new_typed_generics.get_mut(&p_iter.next().unwrap().ident) {
+ if gen.is_some() { return false; }
+ if &format!("{}", p_iter.next().unwrap().ident) != "Target" {return false; }
let mut non_lifetimes_processed = false;
for bound in t.bounds.iter() {
if let syn::TypeParamBound::Trait(trait_bound) = bound {
+ if let Some(id) = trait_bound.path.get_ident() {
+ if format!("{}", id) == "Sized" { continue; }
+ }
if non_lifetimes_processed { return false; }
non_lifetimes_processed = true;
assert_simple_bound(&trait_bound);
- *gen = ("crate::".to_string() + &types.resolve_path(&trait_bound.path, None),
- Some(&trait_bound.path));
+ *gen = Some(types.resolve_path(&trait_bound.path, None));
}
}
} else { return false; }
}
}
}
- for (_, (_, ident)) in self.typed_generics.last().unwrap().iter() {
- if ident.is_none() { return false; }
+ for (key, value) in new_typed_generics.drain() {
+ if let Some(v) = value {
+ assert!(self.typed_generics.insert(key, v).is_none());
+ } else { return false; }
}
true
}
&syn::TraitItem::Type(ref t) => {
if t.default.is_some() || t.generics.lt_token.is_some() { unimplemented!(); }
let mut bounds_iter = t.bounds.iter();
- match bounds_iter.next().unwrap() {
- syn::TypeParamBound::Trait(tr) => {
- assert_simple_bound(&tr);
- if let Some(mut path) = types.maybe_resolve_path(&tr.path, None) {
- if types.skip_path(&path) { continue; }
- // In general we handle Deref<Target=X> as if it were just X (and
- // implement Deref<Target=Self> for relevant types). We don't
- // bother to implement it for associated types, however, so we just
- // ignore such bounds.
- let new_ident = if path != "std::ops::Deref" {
- path = "crate::".to_string() + &path;
- Some(&tr.path)
- } else { None };
- self.typed_generics.last_mut().unwrap().insert(&t.ident, (path, new_ident));
- } else { unimplemented!(); }
- },
- _ => unimplemented!(),
+ loop {
+ match bounds_iter.next().unwrap() {
+ syn::TypeParamBound::Trait(tr) => {
+ assert_simple_bound(&tr);
+ if let Some(path) = types.maybe_resolve_path(&tr.path, None) {
+ if types.skip_path(&path) { continue; }
+ // In general we handle Deref<Target=X> as if it were just X (and
+ // implement Deref<Target=Self> for relevant types). We don't
+ // bother to implement it for associated types, however, so we just
+ // ignore such bounds.
+ if path != "std::ops::Deref" && path != "core::ops::Deref" {
+ self.typed_generics.insert(&t.ident, path);
+ }
+ } else { unimplemented!(); }
+ for bound in bounds_iter {
+ if let syn::TypeParamBound::Trait(_) = bound { unimplemented!(); }
+ }
+ break;
+ },
+ syn::TypeParamBound::Lifetime(_) => {},
+ }
}
- if bounds_iter.next().is_some() { unimplemented!(); }
},
_ => {},
}
}
}
- /// Attempt to resolve an Ident as a generic parameter and return the full path.
- pub fn maybe_resolve_ident<'b>(&'b self, ident: &syn::Ident) -> Option<&'b String> {
- for gen in self.typed_generics.iter().rev() {
- if let Some(res) = gen.get(ident).map(|(a, _)| a) {
- return Some(res);
- }
- }
- None
- }
/// Attempt to resolve a Path as a generic parameter and return the full path. as both a string
/// and syn::Path.
- pub fn maybe_resolve_path<'b>(&'b self, path: &syn::Path) -> Option<(&'b String, &'a syn::Path)> {
+ pub fn maybe_resolve_path<'b>(&'b self, path: &syn::Path) -> Option<&'b String> {
if let Some(ident) = path.get_ident() {
- for gen in self.typed_generics.iter().rev() {
- if let Some(res) = gen.get(ident).map(|(a, b)| (a, b.unwrap())) {
- return Some(res);
+ if let Some(ty) = &self.self_ty {
+ if format!("{}", ident) == "Self" {
+ return Some(&ty);
}
}
+ if let Some(res) = self.typed_generics.get(ident) {
+ return Some(res);
+ }
} else {
// Associated types are usually specified as "Self::Generic", so we check for that
// explicitly here.
let mut it = path.segments.iter();
if path.segments.len() == 2 && format!("{}", it.next().unwrap().ident) == "Self" {
let ident = &it.next().unwrap().ident;
- for gen in self.typed_generics.iter().rev() {
- if let Some(res) = gen.get(ident).map(|(a, b)| (a, b.unwrap())) {
- return Some(res);
- }
+ if let Some(res) = self.typed_generics.get(ident) {
+ return Some(res);
}
}
}
- None
+ if let Some(parent) = self.parent {
+ parent.maybe_resolve_path(path)
+ } else {
+ None
+ }
+ }
+}
+
+trait ResolveType<'a> { fn resolve_type(&'a self, ty: &'a syn::Type) -> &'a syn::Type; }
+impl<'a, 'b, 'c: 'a + 'b> ResolveType<'c> for Option<&GenericTypes<'a, 'b>> {
+ fn resolve_type(&'c self, ty: &'c syn::Type) -> &'c syn::Type {
+ if let Some(us) = self {
+ match ty {
+ syn::Type::Path(p) => {
+ if let Some(ident) = p.path.get_ident() {
+ if let Some((ty, _)) = us.default_generics.get(ident) {
+ return ty;
+ }
+ }
+ },
+ syn::Type::Reference(syn::TypeReference { elem, .. }) => {
+ if let syn::Type::Path(p) = &**elem {
+ if let Some(ident) = p.path.get_ident() {
+ if let Some((_, refty)) = us.default_generics.get(ident) {
+ return refty;
+ }
+ }
+ }
+ }
+ _ => {},
+ }
+ us.parent.resolve_type(ty)
+ } else { ty }
}
}
pub enum DeclType<'a> {
MirroredEnum,
Trait(&'a syn::ItemTrait),
- StructImported,
+ StructImported { generics: &'a syn::Generics },
StructIgnored,
- EnumIgnored,
+ EnumIgnored { generics: &'a syn::Generics },
}
pub struct ImportResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> {
+ crate_name: &'mod_lifetime str,
+ dependencies: &'mod_lifetime HashSet<syn::Ident>,
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>) {
+ fn process_use_intern(crate_name: &str, module_path: &str, dependencies: &HashSet<syn::Ident>, imports: &mut HashMap<syn::Ident, (String, syn::Path)>,
+ u: &syn::UseTree, partial_path: &str, mut path: syn::punctuated::Punctuated<syn::PathSegment, syn::token::Colon2>) {
+
+ let new_path;
+ macro_rules! push_path {
+ ($ident: expr, $path_suffix: expr) => {
+ if partial_path == "" && format!("{}", $ident) == "super" {
+ let mut mod_iter = module_path.rsplitn(2, "::");
+ mod_iter.next().unwrap();
+ let super_mod = mod_iter.next().unwrap();
+ new_path = format!("{}{}", super_mod, $path_suffix);
+ assert_eq!(path.len(), 0);
+ for module in super_mod.split("::") {
+ path.push(syn::PathSegment { ident: syn::Ident::new(module, Span::call_site()), arguments: syn::PathArguments::None });
+ }
+ } else if partial_path == "" && format!("{}", $ident) == "self" {
+ new_path = format!("{}{}", module_path, $path_suffix);
+ for module in module_path.split("::") {
+ path.push(syn::PathSegment { ident: syn::Ident::new(module, Span::call_site()), arguments: syn::PathArguments::None });
+ }
+ } else if partial_path == "" && format!("{}", $ident) == "crate" {
+ new_path = format!("{}{}", crate_name, $path_suffix);
+ let crate_name_ident = format_ident!("{}", crate_name);
+ path.push(parse_quote!(#crate_name_ident));
+ } else if partial_path == "" && !dependencies.contains(&$ident) {
+ new_path = format!("{}::{}{}", crate_name, $ident, $path_suffix);
+ let crate_name_ident = format_ident!("{}", crate_name);
+ path.push(parse_quote!(#crate_name_ident));
+ } else {
+ new_path = format!("{}{}{}", partial_path, $ident, $path_suffix);
+ }
+ let ident = &$ident;
+ path.push(parse_quote!(#ident));
+ }
+ }
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);
+ push_path!(p.ident, "::");
+ Self::process_use_intern(crate_name, module_path, dependencies, 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 }));
+ push_path!(n.ident, "");
+ imports.insert(n.ident.clone(), (new_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());
+ Self::process_use_intern(crate_name, module_path, dependencies, 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 }));
+ push_path!(r.ident, "");
+ imports.insert(r.rename.clone(), (new_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) {
+ fn process_use(crate_name: &str, module_path: &str, dependencies: &HashSet<syn::Ident>, 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());
+ Self::process_use_intern(crate_name, module_path, dependencies, 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 }));
+ let ident = format_ident!("{}", id);
+ let path = parse_quote!(#ident);
+ imports.insert(ident, (id.to_owned(), path));
}
- pub fn new(module_path: &'mod_lifetime str, contents: &'crate_lft [syn::Item]) -> Self {
+ pub fn new(crate_name: &'mod_lifetime str, dependencies: &'mod_lifetime HashSet<syn::Ident>, module_path: &'mod_lifetime str, contents: &'crate_lft [syn::Item]) -> Self {
+ Self::from_borrowed_items(crate_name, dependencies, module_path, &contents.iter().map(|a| a).collect::<Vec<_>>())
+ }
+ pub fn from_borrowed_items(crate_name: &'mod_lifetime str, dependencies: &'mod_lifetime HashSet<syn::Ident>, 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");
for item in contents.iter() {
match item {
- syn::Item::Use(u) => Self::process_use(&mut imports, &u),
+ syn::Item::Use(u) => Self::process_use(crate_name, module_path, dependencies, &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::Export => { declared.insert(s.ident.clone(), DeclType::StructImported { generics: &s.generics }); },
ExportStatus::NoExport => { declared.insert(s.ident.clone(), DeclType::StructIgnored); },
ExportStatus::TestOnly => continue,
+ ExportStatus::NotImplementable => panic!("(C-not implementable) should only appear on traits!"),
}
}
},
else { process_alias = false; }
}
if process_alias {
- match &*t.ty {
- syn::Type::Path(_) => { declared.insert(t.ident.clone(), DeclType::StructImported); },
- _ => {},
- }
+ declared.insert(t.ident.clone(), DeclType::StructImported { generics: &t.generics });
}
}
},
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 if is_enum_opaque(e) => { declared.insert(e.ident.clone(), DeclType::EnumIgnored { generics: &e.generics }); },
ExportStatus::Export => { declared.insert(e.ident.clone(), DeclType::MirroredEnum); },
+ ExportStatus::NotImplementable => panic!("(C-not implementable) should only appear on traits!"),
_ => 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::Trait(t) => {
+ match export_status(&t.attrs) {
+ ExportStatus::Export|ExportStatus::NotImplementable => {
+ if let syn::Visibility::Public(_) = t.vis {
+ declared.insert(t.ident.clone(), DeclType::Trait(t));
+ }
+ },
+ _ => continue,
}
},
syn::Item::Mod(m) => {
}
}
- Self { module_path, imports, declared, priv_modules }
+ Self { crate_name, dependencies, module_path, imports, declared, priv_modules }
}
pub fn get_declared_type(&self, ident: &syn::Ident) -> Option<&DeclType<'crate_lft>> {
} 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 };
+ pub fn maybe_resolve_path(&self, p: &syn::Path, generics: Option<&GenericTypes>) -> Option<String> {
+ if let Some(gen_types) = generics {
+ if let Some(resp) = gen_types.maybe_resolve_path(p) {
+ return Some(resp.clone());
+ }
+ }
if p.leading_colon.is_some() {
- Some(p.segments.iter().enumerate().map(|(idx, seg)| {
+ let mut res: String = p.segments.iter().enumerate().map(|(idx, seg)| {
format!("{}{}", if idx == 0 { "" } else { "::" }, seg.ident)
- }).collect())
+ }).collect();
+ let firstseg = p.segments.iter().next().unwrap();
+ if !self.dependencies.contains(&firstseg.ident) {
+ res = self.crate_name.to_owned() + "::" + &res;
+ }
+ Some(res)
} else if let Some(id) = p.get_ident() {
self.maybe_resolve_ident(id)
} else {
let remaining: String = seg_iter.map(|seg| {
format!("::{}", seg.ident)
}).collect();
+ let first_seg_str = format!("{}", first_seg.ident);
if let Some((imp, _)) = self.imports.get(&first_seg.ident) {
if remaining != "" {
Some(imp.clone() + &remaining)
}
} else if let Some(_) = self.priv_modules.get(&first_seg.ident) {
Some(format!("{}::{}{}", self.module_path, first_seg.ident, remaining))
+ } else if first_seg_is_stdlib(&first_seg_str) || self.dependencies.contains(&first_seg.ident) {
+ Some(first_seg_str + &remaining)
} else { None }
}
}
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();
+ if p.path.segments.len() != 1 { unimplemented!(); }
+ let mut args = p.path.segments[0].arguments.clone();
+ if let syn::PathArguments::AngleBracketed(ref mut generics) = &mut args {
+ for arg in generics.args.iter_mut() {
+ if let syn::GenericArgument::Type(ref mut t) = arg {
+ *t = self.resolve_imported_refs(t.clone());
+ }
}
- } else { unimplemented!(); }
+ }
+ if let Some((_, newpath)) = self.imports.get(single_ident_generic_path_to_ident(&p.path).unwrap()) {
+ p.path = newpath.clone();
+ }
+ p.path.segments[0].arguments = args;
},
syn::Type::Reference(r) => {
r.elem = Box::new(self.resolve_imported_refs((*r.elem).clone()));
#[allow(deprecated)]
pub type NonRandomHash = hash::BuildHasherDefault<hash::SipHasher>;
+/// A public module
+pub struct ASTModule {
+ pub attrs: Vec<syn::Attribute>,
+ pub items: Vec<syn::Item>,
+ pub submods: Vec<String>,
+}
+/// A struct containing the syn::File AST for each file in the crate.
+pub struct FullLibraryAST {
+ pub modules: HashMap<String, ASTModule, NonRandomHash>,
+ pub dependencies: HashSet<syn::Ident>,
+}
+impl FullLibraryAST {
+ fn load_module(&mut self, module: String, attrs: Vec<syn::Attribute>, mut items: Vec<syn::Item>) {
+ let mut non_mod_items = Vec::with_capacity(items.len());
+ let mut submods = Vec::with_capacity(items.len());
+ for item in items.drain(..) {
+ match item {
+ syn::Item::Mod(m) if m.content.is_some() => {
+ if export_status(&m.attrs) == ExportStatus::Export {
+ if let syn::Visibility::Public(_) = m.vis {
+ let modident = format!("{}", m.ident);
+ let modname = if module != "" {
+ module.clone() + "::" + &modident
+ } else {
+ modident.clone()
+ };
+ self.load_module(modname, m.attrs, m.content.unwrap().1);
+ submods.push(modident);
+ } else {
+ non_mod_items.push(syn::Item::Mod(m));
+ }
+ }
+ },
+ syn::Item::Mod(_) => panic!("--pretty=expanded output should never have non-body modules"),
+ syn::Item::ExternCrate(c) => {
+ if export_status(&c.attrs) == ExportStatus::Export {
+ self.dependencies.insert(c.ident);
+ }
+ },
+ _ => { non_mod_items.push(item); }
+ }
+ }
+ self.modules.insert(module, ASTModule { attrs, items: non_mod_items, submods });
+ }
+
+ pub fn load_lib(lib: syn::File) -> Self {
+ assert_eq!(export_status(&lib.attrs), ExportStatus::Export);
+ let mut res = Self { modules: HashMap::default(), dependencies: HashSet::new() };
+ res.load_module("".to_owned(), lib.attrs, lib.items);
+ res
+ }
+}
+
+/// List of manually-generated types which are clonable
+fn initial_clonable_types() -> HashSet<String> {
+ let mut res = HashSet::new();
+ res.insert("crate::c_types::u5".to_owned());
+ res.insert("crate::c_types::ThirtyTwoBytes".to_owned());
+ res.insert("crate::c_types::PublicKey".to_owned());
+ res.insert("crate::c_types::Transaction".to_owned());
+ res.insert("crate::c_types::TxOut".to_owned());
+ res.insert("crate::c_types::Signature".to_owned());
+ res.insert("crate::c_types::RecoverableSignature".to_owned());
+ res.insert("crate::c_types::Secp256k1Error".to_owned());
+ res.insert("crate::c_types::IOError".to_owned());
+ res
+}
+
/// Top-level struct tracking everything which has been defined while walking the crate.
pub struct CrateTypes<'a> {
/// This may contain structs or enums, but only when either is mapped as
/// struct X { inner: *mut originalX, .. }
- pub opaques: HashMap<String, &'a syn::Ident>,
+ pub opaques: HashMap<String, (&'a syn::Ident, &'a syn::Generics)>,
/// Enums which are mapped as C enums with conversion functions
pub mirrored_enums: HashMap<String, &'a syn::ItemEnum>,
/// Traits which are mapped as a pointer + jump table
/// exists.
///
/// This is used at the end of processing to make C++ wrapper classes
- pub templates_defined: HashMap<String, bool, NonRandomHash>,
+ pub templates_defined: RefCell<HashMap<String, bool, NonRandomHash>>,
/// The output file for any created template container types, written to as we find new
/// template containers which need to be defined.
- pub template_file: &'a mut File,
+ template_file: RefCell<&'a mut File>,
/// Set of containers which are clonable
- pub clonable_types: HashSet<String>,
+ clonable_types: RefCell<HashSet<String>>,
/// Key impls Value
pub trait_impls: HashMap<String, Vec<String>>,
+ /// The full set of modules in the crate(s)
+ pub lib_ast: &'a FullLibraryAST,
+}
+
+impl<'a> CrateTypes<'a> {
+ pub fn new(template_file: &'a mut File, libast: &'a FullLibraryAST) -> Self {
+ CrateTypes {
+ opaques: HashMap::new(), mirrored_enums: HashMap::new(), traits: HashMap::new(),
+ type_aliases: HashMap::new(), reverse_alias_map: HashMap::new(),
+ templates_defined: RefCell::new(HashMap::default()),
+ clonable_types: RefCell::new(initial_clonable_types()), trait_impls: HashMap::new(),
+ template_file: RefCell::new(template_file), lib_ast: &libast,
+ }
+ }
+ pub fn set_clonable(&self, object: String) {
+ self.clonable_types.borrow_mut().insert(object);
+ }
+ pub fn is_clonable(&self, object: &str) -> bool {
+ self.clonable_types.borrow().contains(object)
+ }
+ pub fn write_new_template(&self, mangled_container: String, has_destructor: bool, created_container: &[u8]) {
+ self.template_file.borrow_mut().write(created_container).unwrap();
+ self.templates_defined.borrow_mut().insert(mangled_container, has_destructor);
+ }
}
/// A struct which tracks resolving rust types into C-mapped equivalents, exists for one specific
/// module but contains a reference to the overall CrateTypes tracking.
pub struct TypeResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> {
- pub orig_crate: &'mod_lifetime str,
pub module_path: &'mod_lifetime str,
- pub crate_types: &'mod_lifetime mut CrateTypes<'crate_lft>,
+ pub crate_types: &'mod_lifetime CrateTypes<'crate_lft>,
types: ImportResolver<'mod_lifetime, 'crate_lft>,
}
enum EmptyValExpectedTy {
/// A type which has a flag for being empty (eg an array where we treat all-0s as empty).
NonPointer,
- /// A pointer that we want to dereference and move out of.
- OwnedPointer,
+ /// A Option mapped as a COption_*Z
+ OptionType,
/// A pointer which we want to convert to a reference.
ReferenceAsPointer,
}
+#[derive(PartialEq)]
+/// Describes the appropriate place to print a general type-conversion string when converting a
+/// container.
+enum ContainerPrefixLocation {
+ /// Prints a general type-conversion string prefix and suffix outside of the
+ /// container-conversion strings.
+ OutsideConv,
+ /// Prints a general type-conversion string prefix and suffix inside of the
+ /// container-conversion strings.
+ PerConv,
+ /// Does not print the usual type-conversion string prefix and suffix.
+ NoPrefix,
+}
+
impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
- 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 }
+ pub fn new(module_path: &'a str, types: ImportResolver<'a, 'c>, crate_types: &'a CrateTypes<'c>) -> Self {
+ Self { module_path, types, crate_types }
}
// *************************************************
}
}
pub fn is_clonable(&self, ty: &str) -> bool {
- if self.crate_types.clonable_types.contains(ty) { return true; }
+ if self.crate_types.is_clonable(ty) { return true; }
if self.is_primitive(ty) { return true; }
match ty {
"()" => true,
- "crate::c_types::Signature" => true,
- "crate::c_types::TxOut" => true,
_ => false,
}
}
return Some(full_path);
}
match full_path {
- "Result" => Some("crate::c_types::derived::CResult"),
- "Vec" if !is_ref => Some("crate::c_types::derived::CVec"),
- "Option" => Some(""),
-
// Note that no !is_ref types can map to an array because Rust and C's call semantics
// for arrays are different (https://github.com/eqrion/cbindgen/issues/528)
"[u8; 32]" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
+ "[u8; 20]" if !is_ref => Some("crate::c_types::TwentyBytes"),
"[u8; 16]" if !is_ref => Some("crate::c_types::SixteenBytes"),
- "[u8; 10]" if !is_ref => Some("crate::c_types::TenBytes"),
+ "[u8; 12]" if !is_ref => Some("crate::c_types::TwelveBytes"),
"[u8; 4]" if !is_ref => Some("crate::c_types::FourBytes"),
"[u8; 3]" if !is_ref => Some("crate::c_types::ThreeBytes"), // Used for RGB values
"str" if is_ref => Some("crate::c_types::Str"),
- "String" if !is_ref => Some("crate::c_types::derived::CVec_u8Z"),
- "String" if is_ref => Some("crate::c_types::Str"),
+ "alloc::string::String"|"String" => Some("crate::c_types::Str"),
+
+ "std::time::Duration"|"core::time::Duration" => Some("u64"),
+ "std::time::SystemTime" => Some("u64"),
+ "std::io::Error" => Some("crate::c_types::IOError"),
+ "core::fmt::Arguments" if is_ref => Some("crate::c_types::Str"),
- "std::time::Duration" => Some("u64"),
+ "core::convert::Infallible" => Some("crate::c_types::NotConstructable"),
- "bitcoin::secp256k1::key::PublicKey" => Some("crate::c_types::PublicKey"),
+ "bech32::u5" => Some("crate::c_types::u5"),
+ "core::num::NonZeroU8" => Some("u8"),
+
+ "bitcoin::secp256k1::key::PublicKey"|"bitcoin::secp256k1::PublicKey"|"secp256k1::key::PublicKey"
+ => Some("crate::c_types::PublicKey"),
"bitcoin::secp256k1::Signature" => Some("crate::c_types::Signature"),
- "bitcoin::secp256k1::key::SecretKey" if is_ref => Some("*const [u8; 32]"),
- "bitcoin::secp256k1::key::SecretKey" if !is_ref => Some("crate::c_types::SecretKey"),
- "bitcoin::secp256k1::Error" if !is_ref => Some("crate::c_types::Secp256k1Error"),
+ "bitcoin::secp256k1::recovery::RecoverableSignature" => Some("crate::c_types::RecoverableSignature"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if is_ref => Some("*const [u8; 32]"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if !is_ref => Some("crate::c_types::SecretKey"),
+ "bitcoin::secp256k1::Error"|"secp256k1::Error"
+ if !is_ref => Some("crate::c_types::Secp256k1Error"),
"bitcoin::blockdata::script::Script" if is_ref => Some("crate::c_types::u8slice"),
"bitcoin::blockdata::script::Script" if !is_ref => Some("crate::c_types::derived::CVec_u8Z"),
- "bitcoin::blockdata::transaction::OutPoint" => Some("crate::chain::transaction::OutPoint"),
- "bitcoin::blockdata::transaction::Transaction" => Some("crate::c_types::Transaction"),
+ "bitcoin::blockdata::transaction::OutPoint" => Some("crate::lightning::chain::transaction::OutPoint"),
+ "bitcoin::blockdata::transaction::Transaction"|"bitcoin::Transaction" => Some("crate::c_types::Transaction"),
"bitcoin::blockdata::transaction::TxOut" if !is_ref => Some("crate::c_types::TxOut"),
"bitcoin::network::constants::Network" => Some("crate::bitcoin::network::Network"),
"bitcoin::blockdata::block::BlockHeader" if is_ref => Some("*const [u8; 80]"),
"bitcoin::blockdata::block::Block" if is_ref => Some("crate::c_types::u8slice"),
+ "bitcoin::hash_types::PubkeyHash"|"bitcoin::hash_types::WPubkeyHash"|"bitcoin::hash_types::ScriptHash"
+ if is_ref => Some("*const [u8; 20]"),
+ "bitcoin::hash_types::WScriptHash"
+ if is_ref => Some("*const [u8; 32]"),
+
// Newtypes that we just expose in their original form.
- "bitcoin::hash_types::Txid" if is_ref => Some("*const [u8; 32]"),
- "bitcoin::hash_types::Txid" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
- "bitcoin::hash_types::BlockHash" if is_ref => Some("*const [u8; 32]"),
- "bitcoin::hash_types::BlockHash" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
+ "bitcoin::hash_types::Txid"|"bitcoin::hash_types::BlockHash"|"bitcoin_hashes::sha256::Hash"
+ if is_ref => Some("*const [u8; 32]"),
+ "bitcoin::hash_types::Txid"|"bitcoin::hash_types::BlockHash"|"bitcoin_hashes::sha256::Hash"
+ if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
"bitcoin::secp256k1::Message" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
- "ln::channelmanager::PaymentHash" if is_ref => Some("*const [u8; 32]"),
- "ln::channelmanager::PaymentHash" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
- "ln::channelmanager::PaymentPreimage" if is_ref => Some("*const [u8; 32]"),
- "ln::channelmanager::PaymentPreimage" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
- "ln::channelmanager::PaymentSecret" if is_ref => Some("crate::c_types::ThirtyTwoBytes"),
- "ln::channelmanager::PaymentSecret" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if is_ref => Some("*const [u8; 32]"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
- // Override the default since Records contain an fmt with a lifetime:
- "util::logger::Record" => Some("*const std::os::raw::c_char"),
+ "lightning::io::Read" => Some("crate::c_types::u8slice"),
_ => None,
}
"[u8; 32]" if is_ref => Some("unsafe { &*"),
"[u8; 32]" if !is_ref => Some(""),
+ "[u8; 20]" if !is_ref => Some(""),
"[u8; 16]" if !is_ref => Some(""),
- "[u8; 10]" if !is_ref => Some(""),
+ "[u8; 12]" if !is_ref => Some(""),
"[u8; 4]" if !is_ref => Some(""),
"[u8; 3]" if !is_ref => Some(""),
"[usize]" if is_ref => Some(""),
"str" if is_ref => Some(""),
- "String" if !is_ref => Some("String::from_utf8("),
+ "alloc::string::String"|"String" => Some(""),
+ "std::io::Error" if !is_ref => Some(""),
// Note that we'll panic for String if is_ref, as we only have non-owned memory, we
// cannot create a &String.
- "std::time::Duration" => Some("std::time::Duration::from_secs("),
+ "core::convert::Infallible" => Some("panic!(\"You must never construct a NotConstructable! : "),
+
+ "std::time::Duration"|"core::time::Duration" => Some("std::time::Duration::from_secs("),
+ "std::time::SystemTime" => Some("(::std::time::SystemTime::UNIX_EPOCH + std::time::Duration::from_secs("),
+
+ "bech32::u5" => Some(""),
+ "core::num::NonZeroU8" => Some("core::num::NonZeroU8::new("),
- "bitcoin::secp256k1::key::PublicKey" if is_ref => Some("&"),
- "bitcoin::secp256k1::key::PublicKey" => Some(""),
+ "bitcoin::secp256k1::key::PublicKey"|"bitcoin::secp256k1::PublicKey"|"secp256k1::key::PublicKey"
+ if is_ref => Some("&"),
+ "bitcoin::secp256k1::key::PublicKey"|"bitcoin::secp256k1::PublicKey"|"secp256k1::key::PublicKey"
+ => Some(""),
"bitcoin::secp256k1::Signature" if is_ref => Some("&"),
"bitcoin::secp256k1::Signature" => Some(""),
- "bitcoin::secp256k1::key::SecretKey" if is_ref => Some("&::bitcoin::secp256k1::key::SecretKey::from_slice(&unsafe { *"),
- "bitcoin::secp256k1::key::SecretKey" if !is_ref => Some(""),
+ "bitcoin::secp256k1::recovery::RecoverableSignature" => Some(""),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if is_ref => Some("&::bitcoin::secp256k1::key::SecretKey::from_slice(&unsafe { *"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if !is_ref => Some(""),
"bitcoin::blockdata::script::Script" if is_ref => Some("&::bitcoin::blockdata::script::Script::from(Vec::from("),
"bitcoin::blockdata::script::Script" if !is_ref => Some("::bitcoin::blockdata::script::Script::from("),
- "bitcoin::blockdata::transaction::Transaction" if is_ref => Some("&"),
- "bitcoin::blockdata::transaction::Transaction" => Some(""),
+ "bitcoin::blockdata::transaction::Transaction"|"bitcoin::Transaction" if is_ref => Some("&"),
+ "bitcoin::blockdata::transaction::Transaction"|"bitcoin::Transaction" => Some(""),
+ "bitcoin::blockdata::transaction::OutPoint" => Some("crate::c_types::C_to_bitcoin_outpoint("),
"bitcoin::blockdata::transaction::TxOut" if !is_ref => Some(""),
"bitcoin::network::constants::Network" => Some(""),
"bitcoin::blockdata::block::BlockHeader" => Some("&::bitcoin::consensus::encode::deserialize(unsafe { &*"),
"bitcoin::blockdata::block::Block" if is_ref => Some("&::bitcoin::consensus::encode::deserialize("),
+ "bitcoin::hash_types::PubkeyHash" if is_ref =>
+ Some("&bitcoin::hash_types::PubkeyHash::from_hash(bitcoin::hashes::Hash::from_inner(unsafe { *"),
+ "bitcoin::hash_types::WPubkeyHash" if is_ref =>
+ Some("&bitcoin::hash_types::WPubkeyHash::from_hash(bitcoin::hashes::Hash::from_inner(unsafe { *"),
+ "bitcoin::hash_types::ScriptHash" if is_ref =>
+ Some("&bitcoin::hash_types::ScriptHash::from_hash(bitcoin::hashes::Hash::from_inner(unsafe { *"),
+ "bitcoin::hash_types::WScriptHash" if is_ref =>
+ Some("&bitcoin::hash_types::WScriptHash::from_hash(bitcoin::hashes::Hash::from_inner(unsafe { *"),
+
// Newtypes that we just expose in their original form.
"bitcoin::hash_types::Txid" if is_ref => Some("&::bitcoin::hash_types::Txid::from_slice(&unsafe { &*"),
"bitcoin::hash_types::Txid" if !is_ref => Some("::bitcoin::hash_types::Txid::from_slice(&"),
"bitcoin::hash_types::BlockHash" => Some("::bitcoin::hash_types::BlockHash::from_slice(&"),
- "ln::channelmanager::PaymentHash" if !is_ref => Some("::lightning::ln::channelmanager::PaymentHash("),
- "ln::channelmanager::PaymentHash" if is_ref => Some("&::lightning::ln::channelmanager::PaymentHash(unsafe { *"),
- "ln::channelmanager::PaymentPreimage" if !is_ref => Some("::lightning::ln::channelmanager::PaymentPreimage("),
- "ln::channelmanager::PaymentPreimage" if is_ref => Some("&::lightning::ln::channelmanager::PaymentPreimage(unsafe { *"),
- "ln::channelmanager::PaymentSecret" => Some("::lightning::ln::channelmanager::PaymentSecret("),
+ "lightning::ln::PaymentHash" if !is_ref => Some("::lightning::ln::PaymentHash("),
+ "lightning::ln::PaymentHash" if is_ref => Some("&::lightning::ln::PaymentHash(unsafe { *"),
+ "lightning::ln::PaymentPreimage" if !is_ref => Some("::lightning::ln::PaymentPreimage("),
+ "lightning::ln::PaymentPreimage" if is_ref => Some("&::lightning::ln::PaymentPreimage(unsafe { *"),
+ "lightning::ln::PaymentSecret" if !is_ref => Some("::lightning::ln::PaymentSecret("),
+ "lightning::ln::channelmanager::PaymentId" if !is_ref => Some("::lightning::ln::channelmanager::PaymentId("),
+ "lightning::ln::channelmanager::PaymentId" if is_ref=> Some("&::lightning::ln::channelmanager::PaymentId( unsafe { *"),
+ "lightning::chain::keysinterface::KeyMaterial" if !is_ref => Some("::lightning::chain::keysinterface::KeyMaterial("),
+ "lightning::chain::keysinterface::KeyMaterial" if is_ref=> Some("&::lightning::chain::keysinterface::KeyMaterial( unsafe { *"),
// List of traits we map (possibly during processing of other files):
- "crate::util::logger::Logger" => Some(""),
+ "lightning::io::Read" => Some("&mut "),
_ => None,
}.map(|s| s.to_owned())
"[u8; 32]" if is_ref => Some("}"),
"[u8; 32]" if !is_ref => Some(".data"),
+ "[u8; 20]" if !is_ref => Some(".data"),
"[u8; 16]" if !is_ref => Some(".data"),
- "[u8; 10]" if !is_ref => Some(".data"),
+ "[u8; 12]" if !is_ref => Some(".data"),
"[u8; 4]" if !is_ref => Some(".data"),
"[u8; 3]" if !is_ref => Some(".data"),
"[u8]" if is_ref => Some(".to_slice()"),
"[usize]" if is_ref => Some(".to_slice()"),
- "str" if is_ref => Some(".into()"),
- "String" if !is_ref => Some(".into_rust()).unwrap()"),
+ "str" if is_ref => Some(".into_str()"),
+ "alloc::string::String"|"String" => Some(".into_string()"),
+ "std::io::Error" if !is_ref => Some(".to_rust()"),
+
+ "core::convert::Infallible" => Some("\")"),
- "std::time::Duration" => Some(")"),
+ "std::time::Duration"|"core::time::Duration" => Some(")"),
+ "std::time::SystemTime" => Some("))"),
- "bitcoin::secp256k1::key::PublicKey" => Some(".into_rust()"),
+ "bech32::u5" => Some(".into()"),
+ "core::num::NonZeroU8" => Some(").expect(\"Value must be non-zero\")"),
+
+ "bitcoin::secp256k1::key::PublicKey"|"bitcoin::secp256k1::PublicKey"|"secp256k1::key::PublicKey"
+ => Some(".into_rust()"),
"bitcoin::secp256k1::Signature" => Some(".into_rust()"),
- "bitcoin::secp256k1::key::SecretKey" if !is_ref => Some(".into_rust()"),
- "bitcoin::secp256k1::key::SecretKey" if is_ref => Some("}[..]).unwrap()"),
+ "bitcoin::secp256k1::recovery::RecoverableSignature" => Some(".into_rust()"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if !is_ref => Some(".into_rust()"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if is_ref => Some("}[..]).unwrap()"),
"bitcoin::blockdata::script::Script" if is_ref => Some(".to_slice()))"),
"bitcoin::blockdata::script::Script" if !is_ref => Some(".into_rust())"),
- "bitcoin::blockdata::transaction::Transaction" => Some(".into_bitcoin()"),
+ "bitcoin::blockdata::transaction::Transaction"|"bitcoin::Transaction" => Some(".into_bitcoin()"),
+ "bitcoin::blockdata::transaction::OutPoint" => Some(")"),
"bitcoin::blockdata::transaction::TxOut" if !is_ref => Some(".into_rust()"),
"bitcoin::network::constants::Network" => Some(".into_bitcoin()"),
"bitcoin::blockdata::block::BlockHeader" => Some(" }).unwrap()"),
"bitcoin::blockdata::block::Block" => Some(".to_slice()).unwrap()"),
+ "bitcoin::hash_types::PubkeyHash"|"bitcoin::hash_types::WPubkeyHash"|
+ "bitcoin::hash_types::ScriptHash"|"bitcoin::hash_types::WScriptHash"
+ if is_ref => Some(" }.clone()))"),
+
// Newtypes that we just expose in their original form.
"bitcoin::hash_types::Txid" if is_ref => Some(" }[..]).unwrap()"),
"bitcoin::hash_types::Txid" => Some(".data[..]).unwrap()"),
"bitcoin::hash_types::BlockHash" if !is_ref => Some(".data[..]).unwrap()"),
- "ln::channelmanager::PaymentHash" if !is_ref => Some(".data)"),
- "ln::channelmanager::PaymentHash" if is_ref => Some(" })"),
- "ln::channelmanager::PaymentPreimage" if !is_ref => Some(".data)"),
- "ln::channelmanager::PaymentPreimage" if is_ref => Some(" })"),
- "ln::channelmanager::PaymentSecret" => Some(".data)"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if !is_ref => Some(".data)"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if is_ref => Some(" })"),
// List of traits we map (possibly during processing of other files):
- "crate::util::logger::Logger" => Some(""),
+ "lightning::io::Read" => Some(".to_reader()"),
_ => None,
}.map(|s| s.to_owned())
"[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,
- // Override the default since Records contain an fmt with a lifetime:
- // TODO: We should include the other record fields
- "util::logger::Record" => Some(("std::ffi::CString::new(format!(\"{}\", ", ".args)).unwrap()")),
_ => None,
}.map(|s| s.to_owned())
}
"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; 20]" if !is_ref => Some("crate::c_types::TwentyBytes { data: "),
"[u8; 16]" if !is_ref => Some("crate::c_types::SixteenBytes { data: "),
- "[u8; 10]" if !is_ref => Some("crate::c_types::TenBytes { data: "),
+ "[u8; 12]" if !is_ref => Some("crate::c_types::TwelveBytes { 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_"),
"str" if is_ref => Some(""),
- "String" => Some(""),
+ "alloc::string::String"|"String" => Some(""),
+
+ "std::time::Duration"|"core::time::Duration" => Some(""),
+ "std::time::SystemTime" => Some(""),
+ "std::io::Error" if !is_ref => Some("crate::c_types::IOError::from_rust("),
+ "core::fmt::Arguments" => Some("format!(\"{}\", "),
+
+ "core::convert::Infallible" => Some("panic!(\"Cannot construct an Infallible: "),
- "std::time::Duration" => Some(""),
+ "bech32::u5" => Some(""),
- "bitcoin::secp256k1::key::PublicKey" => Some("crate::c_types::PublicKey::from_rust(&"),
+ "bitcoin::secp256k1::key::PublicKey"|"bitcoin::secp256k1::PublicKey"|"secp256k1::key::PublicKey"
+ => Some("crate::c_types::PublicKey::from_rust(&"),
"bitcoin::secp256k1::Signature" => Some("crate::c_types::Signature::from_rust(&"),
- "bitcoin::secp256k1::key::SecretKey" if is_ref => Some(""),
- "bitcoin::secp256k1::key::SecretKey" if !is_ref => Some("crate::c_types::SecretKey::from_rust("),
- "bitcoin::secp256k1::Error" if !is_ref => Some("crate::c_types::Secp256k1Error::from_rust("),
+ "bitcoin::secp256k1::recovery::RecoverableSignature" => Some("crate::c_types::RecoverableSignature::from_rust(&"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if is_ref => Some(""),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if !is_ref => Some("crate::c_types::SecretKey::from_rust("),
+ "bitcoin::secp256k1::Error"|"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"|"bitcoin::Transaction" if is_ref => Some("crate::c_types::Transaction::from_bitcoin("),
+ "bitcoin::blockdata::transaction::Transaction"|"bitcoin::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("),
"bitcoin::hash_types::Txid" if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
// Newtypes that we just expose in their original form.
- "bitcoin::hash_types::Txid" if is_ref => Some(""),
- "bitcoin::hash_types::BlockHash" if is_ref => Some(""),
- "bitcoin::hash_types::BlockHash" => Some("crate::c_types::ThirtyTwoBytes { data: "),
+ "bitcoin::hash_types::Txid"|"bitcoin::hash_types::BlockHash"|"bitcoin_hashes::sha256::Hash"
+ if is_ref => Some(""),
+ "bitcoin::hash_types::Txid"|"bitcoin::hash_types::BlockHash"|"bitcoin_hashes::sha256::Hash"
+ if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
"bitcoin::secp256k1::Message" if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
- "ln::channelmanager::PaymentHash" if is_ref => Some("&"),
- "ln::channelmanager::PaymentHash" if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
- "ln::channelmanager::PaymentPreimage" if is_ref => Some("&"),
- "ln::channelmanager::PaymentPreimage" => Some("crate::c_types::ThirtyTwoBytes { data: "),
- "ln::channelmanager::PaymentSecret" if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if is_ref => Some("&"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if !is_ref => Some("crate::c_types::ThirtyTwoBytes { data: "),
- // Override the default since Records contain an fmt with a lifetime:
- "util::logger::Record" => Some("local_"),
+ "lightning::io::Read" => Some("crate::c_types::u8slice::from_vec(&crate::c_types::reader_to_vec("),
_ => None,
}.map(|s| s.to_owned())
"[u8; 32]" if !is_ref => Some(" }"),
"[u8; 32]" if is_ref => Some(""),
+ "[u8; 20]" if !is_ref => Some(" }"),
"[u8; 16]" if !is_ref => Some(" }"),
- "[u8; 10]" if !is_ref => Some(" }"),
+ "[u8; 12]" if !is_ref => Some(" }"),
"[u8; 4]" if !is_ref => Some(" }"),
"[u8; 3]" if is_ref => Some(""),
"[usize]" if is_ref => Some(""),
"str" if is_ref => Some(".into()"),
- "String" if !is_ref => Some(".into_bytes().into()"),
- "String" if is_ref => Some(".as_str().into()"),
+ "alloc::string::String"|"String" if is_ref => Some(".as_str().into()"),
+ "alloc::string::String"|"String" => Some(".into()"),
- "std::time::Duration" => Some(".as_secs()"),
+ "std::time::Duration"|"core::time::Duration" => Some(".as_secs()"),
+ "std::time::SystemTime" => Some(".duration_since(::std::time::SystemTime::UNIX_EPOCH).expect(\"Times must be post-1970\").as_secs()"),
+ "std::io::Error" if !is_ref => Some(")"),
+ "core::fmt::Arguments" => Some(").into()"),
- "bitcoin::secp256k1::key::PublicKey" => Some(")"),
+ "core::convert::Infallible" => Some("\")"),
+
+ "bech32::u5" => Some(".into()"),
+
+ "bitcoin::secp256k1::key::PublicKey"|"bitcoin::secp256k1::PublicKey"|"secp256k1::key::PublicKey"
+ => Some(")"),
"bitcoin::secp256k1::Signature" => Some(")"),
- "bitcoin::secp256k1::key::SecretKey" if !is_ref => Some(")"),
- "bitcoin::secp256k1::key::SecretKey" if is_ref => Some(".as_ref()"),
- "bitcoin::secp256k1::Error" if !is_ref => Some(")"),
+ "bitcoin::secp256k1::recovery::RecoverableSignature" => Some(")"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if !is_ref => Some(")"),
+ "bitcoin::secp256k1::key::SecretKey"|"bitcoin::secp256k1::SecretKey"
+ if is_ref => Some(".as_ref()"),
+ "bitcoin::secp256k1::Error"|"secp256k1::Error"
+ if !is_ref => Some(")"),
"bitcoin::blockdata::script::Script" if is_ref => Some("[..])"),
"bitcoin::blockdata::script::Script" if !is_ref => Some(".into_bytes().into()"),
- "bitcoin::blockdata::transaction::Transaction" => Some(")"),
+ "bitcoin::blockdata::transaction::Transaction"|"bitcoin::Transaction" => Some(")"),
"bitcoin::blockdata::transaction::OutPoint" => Some(")"),
"bitcoin::blockdata::transaction::TxOut" if !is_ref => Some(")"),
"bitcoin::network::constants::Network" => Some(")"),
"bitcoin::hash_types::Txid" if !is_ref => Some(".into_inner() }"),
// Newtypes that we just expose in their original form.
- "bitcoin::hash_types::Txid" if is_ref => Some(".as_inner()"),
- "bitcoin::hash_types::BlockHash" if is_ref => Some(".as_inner()"),
- "bitcoin::hash_types::BlockHash" => Some(".into_inner() }"),
+ "bitcoin::hash_types::Txid"|"bitcoin::hash_types::BlockHash"|"bitcoin_hashes::sha256::Hash"
+ if is_ref => Some(".as_inner()"),
+ "bitcoin::hash_types::Txid"|"bitcoin::hash_types::BlockHash"|"bitcoin_hashes::sha256::Hash"
+ if !is_ref => Some(".into_inner() }"),
"bitcoin::secp256k1::Message" if !is_ref => Some(".as_ref().clone() }"),
- "ln::channelmanager::PaymentHash" if is_ref => Some(".0"),
- "ln::channelmanager::PaymentHash" => Some(".0 }"),
- "ln::channelmanager::PaymentPreimage" if is_ref => Some(".0"),
- "ln::channelmanager::PaymentPreimage" => Some(".0 }"),
- "ln::channelmanager::PaymentSecret" if !is_ref => Some(".0 }"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if is_ref => Some(".0"),
+ "lightning::ln::PaymentHash"|"lightning::ln::PaymentPreimage"|"lightning::ln::PaymentSecret"
+ |"lightning::ln::channelmanager::PaymentId"|"lightning::chain::keysinterface::KeyMaterial"
+ if !is_ref => Some(".0 }"),
- // Override the default since Records contain an fmt with a lifetime:
- "util::logger::Record" => Some(".as_ptr()"),
+ "lightning::io::Read" => Some("))"),
_ => None,
}.map(|s| s.to_owned())
fn empty_val_check_suffix_from_path(&self, full_path: &str) -> Option<&str> {
match full_path {
- "ln::channelmanager::PaymentSecret" => Some(".data == [0; 32]"),
- "bitcoin::secp256k1::key::PublicKey" => Some(".is_null()"),
+ "lightning::ln::PaymentSecret" => Some(".data == [0; 32]"),
+ "secp256k1::key::PublicKey"|"bitcoin::secp256k1::key::PublicKey" => Some(".is_null()"),
"bitcoin::secp256k1::Signature" => Some(".is_null()"),
_ => None
}
}
+ /// When printing a reference to the source crate's rust type, if we need to map it to a
+ /// different "real" type, it can be done so here.
+ /// This is useful to work around limitations in the binding type resolver, where we reference
+ /// a non-public `use` alias.
+ /// TODO: We should never need to use this!
+ fn real_rust_type_mapping<'equiv>(&self, thing: &'equiv str) -> &'equiv str {
+ match thing {
+ "lightning::io::Read" => "std::io::Read",
+ _ => thing,
+ }
+ }
+
// ****************************
// *** Container Processing ***
// ****************************
"crate::c_types"
}
- /// Returns true if this is a "transparent" container, ie an Option or a container which does
+ /// Returns true if the path containing the given args is a "transparent" container, ie an
+ /// Option or a container which does not require a generated continer class.
+ fn is_transparent_container<'i, I: Iterator<Item=&'i syn::Type>>(&self, full_path: &str, _is_ref: bool, mut args: I, generics: Option<&GenericTypes>) -> bool {
+ if full_path == "Option" {
+ let inner = args.next().unwrap();
+ assert!(args.next().is_none());
+ match inner {
+ syn::Type::Reference(_) => true,
+ syn::Type::Path(p) => {
+ if let Some(resolved) = self.maybe_resolve_path(&p.path, generics) {
+ if self.c_type_has_inner_from_path(&resolved) { return true; }
+ if self.is_primitive(&resolved) { return false; }
+ if self.c_type_from_path(&resolved, false, false).is_some() { true } else { false }
+ } else { true }
+ },
+ syn::Type::Tuple(_) => false,
+ _ => unimplemented!(),
+ }
+ } else { false }
+ }
+ /// Returns true if the path is a "transparent" container, ie an Option or a container which does
/// not require a generated continer class.
- fn is_transparent_container(&self, full_path: &str, _is_ref: bool) -> bool {
- full_path == "Option"
+ pub fn is_path_transparent_container(&self, full_path: &syn::Path, generics: Option<&GenericTypes>, is_ref: bool) -> bool {
+ let inner_iter = match &full_path.segments.last().unwrap().arguments {
+ syn::PathArguments::None => return false,
+ syn::PathArguments::AngleBracketed(args) => args.args.iter().map(|arg| {
+ if let syn::GenericArgument::Type(ref ty) = arg {
+ ty
+ } else { unimplemented!() }
+ }),
+ syn::PathArguments::Parenthesized(_) => unimplemented!(),
+ };
+ self.is_transparent_container(&self.resolve_path(full_path, generics), is_ref, inner_iter, generics)
}
/// Returns true if this is a known, supported, non-transparent container.
fn is_known_container(&self, full_path: &str, is_ref: bool) -> bool {
- (full_path == "Result" && !is_ref) || (full_path == "Vec" && !is_ref) || full_path.ends_with("Tuple")
+ (full_path == "Result" && !is_ref) || (full_path == "Vec" && !is_ref) || full_path.ends_with("Tuple") || full_path == "Option"
}
fn to_c_conversion_container_new_var<'b>(&self, generics: Option<&GenericTypes>, full_path: &str, is_ref: bool, single_contained: Option<&syn::Type>, var_name: &syn::Ident, var_access: &str)
// Returns prefix + Vec<(prefix, var-name-to-inline-convert)> + suffix
// expecting one element in the vec per generic type, each of which is inline-converted
- -> Option<(&'b str, Vec<(String, String)>, &'b str)> {
+ -> Option<(&'b str, Vec<(String, String)>, &'b str, ContainerPrefixLocation)> {
match full_path {
"Result" if !is_ref => {
Some(("match ",
vec![(" { Ok(mut o) => crate::c_types::CResultTempl::ok(".to_string(), "o".to_string()),
(").into(), Err(mut e) => crate::c_types::CResultTempl::err(".to_string(), "e".to_string())],
- ").into() }"))
+ ").into() }", ContainerPrefixLocation::PerConv))
},
- "Vec" if !is_ref => {
- Some(("Vec::new(); for mut item in ", vec![(format!(".drain(..) {{ local_{}.push(", var_name), "item".to_string())], "); }"))
+ "Vec" => {
+ if is_ref {
+ // We should only get here if the single contained has an inner
+ assert!(self.c_type_has_inner(single_contained.unwrap()));
+ }
+ 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())], "); }"))
+ if let Some(syn::Type::Reference(_)) = single_contained {
+ Some(("Vec::new(); for item in ", vec![(format!(".iter() {{ local_{}.push(", var_name), "(*item)".to_string())], "); }", ContainerPrefixLocation::PerConv))
+ } else {
+ 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 {
- if self.c_type_has_inner_from_path(&self.resolve_path(&p.path, generics)) {
+ let contained_struct = if let Some(syn::Type::Path(p)) = single_contained {
+ Some(self.resolve_path(&p.path, generics))
+ } else if let Some(syn::Type::Reference(r)) = single_contained {
+ if let syn::Type::Path(p) = &*r.elem {
+ Some(self.resolve_path(&p.path, generics))
+ } else { None }
+ } else { None };
+ if let Some(inner_path) = contained_struct {
+ if self.c_type_has_inner_from_path(&inner_path) {
+ let is_inner_ref = if let Some(syn::Type::Reference(_)) = single_contained { true } else { false };
if is_ref {
return Some(("if ", vec![
- (".is_none() { std::ptr::null() } else { ".to_owned(), format!("({}.as_ref().unwrap())", var_access))
- ], " }"));
+ (".is_none() { std::ptr::null() } else { ObjOps::nonnull_ptr_to_inner(".to_owned(),
+ format!("({}{}.unwrap())", var_access, if is_inner_ref { "" } else { ".as_ref()" }))
+ ], ") }", ContainerPrefixLocation::OutsideConv));
} else {
return Some(("if ", vec![
(".is_none() { std::ptr::null_mut() } else { ".to_owned(), format!("({}.unwrap())", var_access))
- ], " }"));
+ ], " }", ContainerPrefixLocation::OutsideConv));
}
+ } else if self.is_primitive(&inner_path) || self.c_type_from_path(&inner_path, false, false).is_none() {
+ let inner_name = self.get_c_mangled_container_type(vec![single_contained.unwrap()], generics, "Option").unwrap();
+ return Some(("if ", vec![
+ (format!(".is_none() {{ {}::None }} else {{ {}::Some(",
+ inner_name, inner_name),
+ format!("{}.unwrap()", var_access))
+ ], ") }", ContainerPrefixLocation::PerConv));
+ } else {
+ // If c_type_from_path is some (ie there's a manual mapping for the inner
+ // type), lean on write_empty_rust_val, below.
}
}
if let Some(t) = single_contained {
+ if let syn::Type::Tuple(syn::TypeTuple { elems, .. }) = t {
+ assert!(elems.is_empty());
+ let inner_name = self.get_c_mangled_container_type(vec![single_contained.unwrap()], generics, "Option").unwrap();
+ return Some(("if ", vec![
+ (format!(".is_none() {{ {}::None }} else {{ {}::Some /*",
+ inner_name, inner_name), format!(""))
+ ], " */}", ContainerPrefixLocation::PerConv));
+ }
+ if let syn::Type::Reference(syn::TypeReference { elem, .. }) = t {
+ if let syn::Type::Slice(_) = &**elem {
+ return Some(("if ", vec![
+ (".is_none() { SmartPtr::null() } else { SmartPtr::from_obj(".to_string(),
+ format!("({}.unwrap())", var_access))
+ ], ") }", ContainerPrefixLocation::PerConv));
+ }
+ }
let mut v = Vec::new();
self.write_empty_rust_val(generics, &mut v, t);
let s = String::from_utf8(v).unwrap();
return Some(("if ", vec![
(format!(".is_none() {{ {} }} else {{ ", s), format!("({}.unwrap())", var_access))
- ], " }"));
+ ], " }", ContainerPrefixLocation::PerConv));
} else { unreachable!(); }
},
_ => None,
fn from_c_conversion_container_new_var<'b>(&self, generics: Option<&GenericTypes>, full_path: &str, is_ref: bool, single_contained: Option<&syn::Type>, var_name: &syn::Ident, var_access: &str)
// Returns prefix + Vec<(prefix, var-name-to-inline-convert)> + suffix
// expecting one element in the vec per generic type, each of which is inline-converted
- -> Option<(&'b str, Vec<(String, String)>, &'b str)> {
+ -> Option<(&'b str, Vec<(String, String)>, &'b str, ContainerPrefixLocation)> {
match full_path {
"Result" if !is_ref => {
Some(("match ",
vec![(".result_ok { true => Ok(".to_string(), format!("(*unsafe {{ Box::from_raw(<*mut _>::take_ptr(&mut {}.contents.result)) }})", var_access)),
("), false => Err(".to_string(), format!("(*unsafe {{ Box::from_raw(<*mut _>::take_ptr(&mut {}.contents.err)) }})", var_access))],
- ")}"))
- },
- "Vec"|"Slice" if !is_ref => {
- Some(("Vec::new(); for mut item in ", vec![(format!(".into_rust().drain(..) {{ local_{}.push(", var_name), "item".to_string())], "); }"))
+ ")}", ContainerPrefixLocation::PerConv))
},
"Slice" if is_ref => {
- Some(("Vec::new(); for mut item in ", vec![(format!(".as_slice().iter() {{ local_{}.push(", var_name), "item".to_string())], "); }"))
+ Some(("Vec::new(); for mut item in ", vec![(format!(".as_slice().iter() {{ local_{}.push(", var_name), "item".to_string())], "); }", ContainerPrefixLocation::PerConv))
+ },
+ "Vec"|"Slice" => {
+ Some(("Vec::new(); for mut item in ", vec![(format!(".into_rust().drain(..) {{ local_{}.push(", var_name), "item".to_string())], "); }", ContainerPrefixLocation::PerConv))
},
"Option" => {
if let Some(syn::Type::Path(p)) = single_contained {
- if self.c_type_has_inner_from_path(&self.resolve_path(&p.path, generics)) {
+ let inner_path = self.resolve_path(&p.path, generics);
+ if self.is_primitive(&inner_path) {
+ return Some(("if ", vec![(".is_some() { Some(".to_string(), format!("{}.take()", var_access))], ") } else { None }", ContainerPrefixLocation::NoPrefix))
+ } else if self.c_type_has_inner_from_path(&inner_path) {
if is_ref {
- return Some(("if ", vec![(".inner.is_null() { None } else { Some((*".to_string(), format!("{}", var_access))], ").clone()) }"))
+ return Some(("if ", vec![(".inner.is_null() { None } else { Some((*".to_string(), format!("{}", var_access))], ").clone()) }", ContainerPrefixLocation::PerConv))
} else {
- return Some(("if ", vec![(".inner.is_null() { None } else { Some(".to_string(), format!("{}", var_access))], ") }"));
+ return Some(("if ", vec![(".inner.is_null() { None } else { Some(".to_string(), format!("{}", var_access))], ") }", ContainerPrefixLocation::PerConv));
}
}
}
if let Some(t) = single_contained {
- let mut v = Vec::new();
- let ret_ref = self.write_empty_rust_val_check_suffix(generics, &mut v, t);
- let s = String::from_utf8(v).unwrap();
- match ret_ref {
- EmptyValExpectedTy::ReferenceAsPointer =>
- return Some(("if ", vec![
- (format!("{} {{ None }} else {{ Some(", s), format!("unsafe {{ &mut *{} }}", var_access))
- ], ") }")),
- EmptyValExpectedTy::OwnedPointer =>
- return Some(("if ", vec![
- (format!("{} {{ None }} else {{ Some(", s), format!("unsafe {{ *Box::from_raw({}) }}", var_access))
- ], ") }")),
- EmptyValExpectedTy::NonPointer =>
- return Some(("if ", vec![
- (format!("{} {{ None }} else {{ Some(", s), format!("{}", var_access))
- ], ") }")),
+ match t {
+ syn::Type::Reference(_)|syn::Type::Path(_)|syn::Type::Slice(_) => {
+ let mut v = Vec::new();
+ let ret_ref = self.write_empty_rust_val_check_suffix(generics, &mut v, t);
+ let s = String::from_utf8(v).unwrap();
+ match ret_ref {
+ EmptyValExpectedTy::ReferenceAsPointer =>
+ return Some(("if ", vec![
+ (format!("{} {{ None }} else {{ Some(", s), format!("unsafe {{ &mut *{} }}", var_access))
+ ], ") }", ContainerPrefixLocation::NoPrefix)),
+ EmptyValExpectedTy::OptionType =>
+ return Some(("{ /* ", vec![
+ (format!("*/ let {}_opt = {};", var_name, var_access),
+ format!("}} if {}_opt{} {{ None }} else {{ Some({{ {}_opt.take()", var_name, s, var_name))
+ ], ") } }", ContainerPrefixLocation::PerConv)),
+ EmptyValExpectedTy::NonPointer =>
+ return Some(("if ", vec![
+ (format!("{} {{ None }} else {{ Some(", s), format!("{}", var_access))
+ ], ") }", ContainerPrefixLocation::PerConv)),
+ }
+ },
+ syn::Type::Tuple(_) => {
+ return Some(("if ", vec![(".is_some() { Some(".to_string(), format!("{}.take()", var_access))], ") } else { None }", ContainerPrefixLocation::PerConv))
+ },
+ _ => unimplemented!(),
}
} else { unreachable!(); }
},
}
}
+ /// Constructs a reference to the given type, possibly tweaking the type if relevant to make it
+ /// convertable to C.
+ pub fn create_ownable_reference(&self, t: &syn::Type, generics: Option<&GenericTypes>) -> Option<syn::Type> {
+ let default_value = Some(syn::Type::Reference(syn::TypeReference {
+ and_token: syn::Token!(&)(Span::call_site()), lifetime: None, mutability: None,
+ elem: Box::new(t.clone()) }));
+ match generics.resolve_type(t) {
+ syn::Type::Path(p) => {
+ if let Some(resolved_path) = self.maybe_resolve_path(&p.path, generics) {
+ if resolved_path != "Vec" { return default_value; }
+ if p.path.segments.len() != 1 { unimplemented!(); }
+ let only_seg = p.path.segments.iter().next().unwrap();
+ if let syn::PathArguments::AngleBracketed(args) = &only_seg.arguments {
+ if args.args.len() != 1 { unimplemented!(); }
+ let inner_arg = args.args.iter().next().unwrap();
+ if let syn::GenericArgument::Type(ty) = &inner_arg {
+ let mut can_create = self.c_type_has_inner(&ty);
+ if let syn::Type::Path(inner) = ty {
+ if inner.path.segments.len() == 1 &&
+ format!("{}", inner.path.segments[0].ident) == "Vec" {
+ can_create = true;
+ }
+ }
+ if !can_create { return default_value; }
+ if let Some(inner_ty) = self.create_ownable_reference(&ty, generics) {
+ return Some(syn::Type::Reference(syn::TypeReference {
+ and_token: syn::Token),
+ lifetime: None,
+ mutability: None,
+ elem: Box::new(syn::Type::Slice(syn::TypeSlice {
+ bracket_token: syn::token::Bracket { span: Span::call_site() },
+ elem: Box::new(inner_ty)
+ }))
+ }));
+ } else { return default_value; }
+ } else { unimplemented!(); }
+ } else { unimplemented!(); }
+ } else { return None; }
+ },
+ _ => default_value,
+ }
+ }
+
// *************************************************
// *** Type definition during main.rs processing ***
// *************************************************
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 c_type_has_inner_from_path(&self, full_path: &str) -> bool {
self.crate_types.opaques.get(full_path).is_some()
}
+ /// Returns true if the object at the given path is mapped as X { inner: *mut origX, .. }.
+ pub fn c_type_has_inner(&self, ty: &syn::Type) -> bool {
+ match ty {
+ syn::Type::Path(p) => {
+ if let Some(full_path) = self.maybe_resolve_path(&p.path, None) {
+ self.c_type_has_inner_from_path(&full_path)
+ } else { false }
+ },
+ syn::Type::Reference(r) => {
+ self.c_type_has_inner(&*r.elem)
+ },
+ _ => false,
+ }
+ }
+
pub fn maybe_resolve_ident(&self, id: &syn::Ident) -> Option<String> {
self.types.maybe_resolve_ident(id)
}
// If we're printing a generic argument, it needs to reference the crate, otherwise
// the original crate:
} else if self.maybe_resolve_path(&path, None).as_ref() == Some(&resolved) {
- write!(w, "{}::{}", self.orig_crate, resolved).unwrap();
+ write!(w, "{}", self.real_rust_type_mapping(&resolved)).unwrap();
} else {
write!(w, "crate::{}", resolved).unwrap();
}
/// unint'd memory).
pub fn write_empty_rust_val<W: std::io::Write>(&self, generics: Option<&GenericTypes>, w: &mut W, t: &syn::Type) {
match t {
+ syn::Type::Reference(r) => {
+ self.write_empty_rust_val(generics, w, &*r.elem)
+ },
syn::Type::Path(p) => {
let resolved = self.resolve_path(&p.path, generics);
if self.crate_types.opaques.get(&resolved).is_some() {
}
}
+ fn is_real_type_array(&self, resolved_type: &str) -> Option<syn::Type> {
+ if let Some(real_ty) = self.c_type_from_path(&resolved_type, true, false) {
+ if real_ty.ends_with("]") && real_ty.starts_with("*const [u8; ") {
+ let mut split = real_ty.split("; ");
+ split.next().unwrap();
+ let tail_str = split.next().unwrap();
+ assert!(split.next().is_none());
+ let len = usize::from_str_radix(&tail_str[..tail_str.len() - 1], 10).unwrap();
+ Some(parse_quote!([u8; #len]))
+ } else { None }
+ } else { None }
+ }
+
/// Prints a suffix to determine if a variable is empty (ie was set by write_empty_rust_val).
/// See EmptyValExpectedTy for information on return types.
fn write_empty_rust_val_check_suffix<W: std::io::Write>(&self, generics: Option<&GenericTypes>, w: &mut W, t: &syn::Type) -> EmptyValExpectedTy {
match t {
+ syn::Type::Reference(r) => {
+ return self.write_empty_rust_val_check_suffix(generics, w, &*r.elem);
+ },
syn::Type::Path(p) => {
let resolved = self.resolve_path(&p.path, generics);
+ if let Some(arr_ty) = self.is_real_type_array(&resolved) {
+ write!(w, ".data").unwrap();
+ return self.write_empty_rust_val_check_suffix(generics, w, &arr_ty);
+ }
if self.crate_types.opaques.get(&resolved).is_some() {
write!(w, ".inner.is_null()").unwrap();
EmptyValExpectedTy::NonPointer
// We may eventually need to allow empty_val_check_suffix_from_path to specify if we need a deref or not
EmptyValExpectedTy::NonPointer
} else {
- write!(w, " == std::ptr::null_mut()").unwrap();
- EmptyValExpectedTy::OwnedPointer
+ write!(w, ".is_none()").unwrap();
+ EmptyValExpectedTy::OptionType
}
}
},
/// Prints a suffix to determine if a variable is empty (ie was set by write_empty_rust_val).
pub fn write_empty_rust_val_check<W: std::io::Write>(&self, generics: Option<&GenericTypes>, w: &mut W, t: &syn::Type, var_access: &str) {
match t {
+ syn::Type::Reference(r) => {
+ self.write_empty_rust_val_check(generics, w, &*r.elem, var_access);
+ },
syn::Type::Path(_) => {
write!(w, "{}", var_access).unwrap();
self.write_empty_rust_val_check_suffix(generics, w, t);
}
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 {
+ match generics.resolve_type(t) {
syn::Type::Reference(r) => {
self.write_conversion_inline_intern(w, &*r.elem, generics, true, r.mutability.is_some(),
ptr_for_ref, tupleconv, prefix, sliceconv, path_lookup, decl_lookup);
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() {
- decl_lookup(w, &DeclType::StructImported, &resolved_path, is_ref, is_mut);
+ } else if let Some((_, generics)) = self.crate_types.opaques.get(&resolved_path) {
+ decl_lookup(w, &DeclType::StructImported { generics: &generics }, &resolved_path, is_ref, is_mut);
} else if self.crate_types.mirrored_enums.get(&resolved_path).is_some() {
decl_lookup(w, &DeclType::MirroredEnum, &resolved_path, is_ref, is_mut);
} else if let Some(t) = self.crate_types.traits.get(&resolved_path) {
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 if let syn::Type::Slice(_) = &*r.elem {
+ write!(w, "{}", sliceconv(false, 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() {
}
}
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!(); }
}
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, "() /*", 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(),
- DeclType::EnumIgnored|DeclType::StructImported if is_ref =>
- write!(w, "&crate::{} {{ inner: unsafe {{ (", decl_path).unwrap(),
- DeclType::EnumIgnored|DeclType::StructImported if !is_ref && from_ptr =>
+ DeclType::EnumIgnored {..}|DeclType::StructImported {..} if is_ref && from_ptr => {
+ if !ptr_for_ref { write!(w, "&").unwrap(); }
+ write!(w, "crate::{} {{ inner: unsafe {{ (", decl_path).unwrap()
+ },
+ DeclType::EnumIgnored {..}|DeclType::StructImported {..} if is_ref => {
+ if !ptr_for_ref { write!(w, "&").unwrap(); }
+ write!(w, "crate::{} {{ inner: unsafe {{ ObjOps::nonnull_ptr_to_inner((", 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 => {},
+ DeclType::EnumIgnored {..}|DeclType::StructImported {..} if !is_ref =>
+ write!(w, "crate::{} {{ inner: ObjOps::heap_alloc(", decl_path).unwrap(),
+ DeclType::Trait(_) if is_ref => write!(w, "").unwrap(),
+ DeclType::Trait(_) if !is_ref => write!(w, "Into::into(").unwrap(),
_ => panic!("{:?}", decl_path),
}
});
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 {
+ |w, decl_type, full_path, is_ref, _is_mut| match decl_type {
DeclType::MirroredEnum => write!(w, ")").unwrap(),
- DeclType::EnumIgnored|DeclType::StructImported if is_ref && ptr_for_ref && from_ptr =>
- write!(w, " as *const _) as *mut _ }}, is_owned: false }}").unwrap(),
- DeclType::EnumIgnored|DeclType::StructImported if is_ref && ptr_for_ref =>
- write!(w, ") as *const _) as *mut _) }}, is_owned: false }}").unwrap(),
- DeclType::EnumIgnored|DeclType::StructImported if is_ref =>
- write!(w, " as *const _) as *mut _ }}, is_owned: false }}").unwrap(),
- DeclType::EnumIgnored|DeclType::StructImported if !is_ref && from_ptr =>
+ DeclType::EnumIgnored { generics }|DeclType::StructImported { generics } if is_ref => {
+ write!(w, " as *const {}<", full_path).unwrap();
+ for param in generics.params.iter() {
+ if let syn::GenericParam::Lifetime(_) = param {
+ write!(w, "'_, ").unwrap();
+ } else {
+ write!(w, "_, ").unwrap();
+ }
+ }
+ if from_ptr {
+ write!(w, ">) as *mut _ }}, is_owned: false }}").unwrap();
+ } else {
+ write!(w, ">) as *mut _) }}, is_owned: false }}").unwrap();
+ }
+ },
+ DeclType::EnumIgnored {..}|DeclType::StructImported {..} if !is_ref && from_ptr =>
write!(w, ", is_owned: true }}").unwrap(),
- DeclType::EnumIgnored|DeclType::StructImported if !is_ref => write!(w, ")), is_owned: true }}").unwrap(),
+ DeclType::EnumIgnored {..}|DeclType::StructImported {..} if !is_ref => write!(w, "), is_owned: true }}").unwrap(),
DeclType::Trait(_) if is_ref => {},
DeclType::Trait(_) => {
// This is used when we're converting a concrete Rust type into a C trait
// for use when a Rust trait method returns an associated type.
// Because all of our C traits implement From<RustTypesImplementingTraits>
// we can just call .into() here and be done.
- write!(w, ".into()").unwrap()
+ write!(w, ")").unwrap()
},
_ => unimplemented!(),
});
self.write_to_c_conversion_inline_suffix_inner(w, t, generics, false, ptr_for_ref, false);
}
- 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_",
+ 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_".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(),
- DeclType::StructImported if is_mut && is_ref => write!(w, "unsafe {{ &mut *").unwrap(),
- DeclType::StructImported if is_ref => write!(w, "unsafe {{ &*").unwrap(),
- DeclType::StructImported if !is_ref => write!(w, "*unsafe {{ Box::from_raw(").unwrap(),
+ |w, decl_type, _full_path, is_ref, _is_mut| match decl_type {
+ DeclType::StructImported {..} if is_ref => write!(w, "").unwrap(),
+ DeclType::StructImported {..} if !is_ref => write!(w, "*unsafe {{ Box::from_raw(").unwrap(),
DeclType::MirroredEnum if is_ref => write!(w, "&").unwrap(),
DeclType::MirroredEnum => {},
DeclType::Trait(_) => {},
}
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 {
- DeclType::StructImported if is_ref && ptr_for_ref => write!(w, ").inner }}").unwrap(),
- DeclType::StructImported if is_ref => write!(w, ".inner }}").unwrap(),
- DeclType::StructImported if !is_ref => write!(w, ".take_inner()) }}").unwrap(),
+ |w, decl_type, _full_path, is_ref, is_mut| match decl_type {
+ DeclType::StructImported {..} if is_ref && ptr_for_ref => write!(w, "XXX unimplemented").unwrap(),
+ DeclType::StructImported {..} if is_mut && is_ref => write!(w, ".get_native_mut_ref()").unwrap(),
+ DeclType::StructImported {..} if is_ref => write!(w, ".get_native_ref()").unwrap(),
+ DeclType::StructImported {..} if !is_ref => write!(w, ".take_inner()) }}").unwrap(),
DeclType::MirroredEnum if is_ref => write!(w, ".to_native()").unwrap(),
DeclType::MirroredEnum => write!(w, ".into_native()").unwrap(),
DeclType::Trait(_) => {},
// 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))
} else { None }
},
|w, decl_type, _full_path, is_ref, _is_mut| match decl_type {
- DeclType::StructImported if !is_ref => write!(w, "unsafe {{ &*").unwrap(),
+ DeclType::StructImported {..} if !is_ref => write!(w, "").unwrap(),
_ => unimplemented!(),
});
}
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 {
- DeclType::StructImported if !is_ref => write!(w, ".inner }}").unwrap(),
+ DeclType::StructImported {..} if !is_ref => write!(w, ".get_native_ref()").unwrap(),
_ => unimplemented!(),
});
}
fn write_conversion_new_var_intern<'b, W: std::io::Write,
LP: Fn(&str, bool) -> Option<(&str, &str)>,
- LC: Fn(&str, bool, Option<&syn::Type>, &syn::Ident, &str) -> Option<(&'b str, Vec<(String, String)>, &'b str)>,
+ LC: Fn(&str, bool, Option<&syn::Type>, &syn::Ident, &str) -> Option<(&'b str, Vec<(String, String)>, &'b str, ContainerPrefixLocation)>,
VP: Fn(&mut W, &syn::Type, Option<&GenericTypes>, bool, bool, bool),
VS: Fn(&mut W, &syn::Type, Option<&GenericTypes>, bool, bool, bool)>
(&self, w: &mut W, ident: &syn::Ident, var: &str, t: &syn::Type, generics: Option<&GenericTypes>,
- mut is_ref: bool, mut ptr_for_ref: bool, to_c: bool,
+ mut is_ref: bool, mut ptr_for_ref: bool, to_c: bool, from_ownable_ref: bool,
path_lookup: &LP, container_lookup: &LC, var_prefix: &VP, var_suffix: &VS) -> bool {
macro_rules! convert_container {
// For slices (and Options), we refuse to directly map them as is_ref when they
// aren't opaque types containing an inner pointer. This is due to the fact that,
// in both cases, the actual higher-level type is non-is_ref.
- let ty_has_inner = if self.is_transparent_container(&$container_type, is_ref) || $container_type == "Slice" {
+ let ty_has_inner = if $args_len == 1 {
let ty = $args_iter().next().unwrap();
if $container_type == "Slice" && to_c {
// "To C ptr_for_ref" means "return the regular object with is_owned
// pretty manual here and most of the below special-cases are for Options.
let mut needs_ref_map = false;
let mut only_contained_type = None;
+ let mut only_contained_type_nonref = None;
let mut only_contained_has_inner = false;
let mut contains_slice = false;
- if $args_len == 1 && self.is_transparent_container(&$container_type, is_ref) {
+ if $args_len == 1 {
only_contained_has_inner = ty_has_inner;
let arg = $args_iter().next().unwrap();
if let syn::Type::Reference(t) = arg {
- only_contained_type = Some(&*t.elem);
+ only_contained_type = Some(arg);
+ only_contained_type_nonref = Some(&*t.elem);
if let syn::Type::Path(_) = &*t.elem {
is_ref = true;
} else if let syn::Type::Slice(_) = &*t.elem {
contains_slice = true;
} else { return false; }
- needs_ref_map = true;
- } else if let syn::Type::Path(_) = arg {
- only_contained_type = Some(&arg);
- } else { unimplemented!(); }
+ // If the inner element contains an inner pointer, we will just use that,
+ // avoiding the need to map elements to references. Otherwise we'll need to
+ // do an extra mapping step.
+ needs_ref_map = !only_contained_has_inner && $container_type == "Option";
+ } else {
+ only_contained_type = Some(arg);
+ only_contained_type_nonref = Some(arg);
+ }
}
- if let Some((prefix, conversions, suffix)) = container_lookup(&$container_type, is_ref && ty_has_inner, only_contained_type, ident, var) {
+ if let Some((prefix, conversions, suffix, prefix_location)) = container_lookup(&$container_type, is_ref && ty_has_inner, only_contained_type, ident, var) {
assert_eq!(conversions.len(), $args_len);
- write!(w, "let mut local_{}{} = ", ident, if !to_c && needs_ref_map {"_base"} else { "" }).unwrap();
- if only_contained_has_inner && to_c {
+ write!(w, "let mut local_{}{} = ", ident,
+ if (!to_c && needs_ref_map) || (to_c && $container_type == "Option" && contains_slice) {"_base"} else { "" }).unwrap();
+ if prefix_location == ContainerPrefixLocation::OutsideConv {
var_prefix(w, $args_iter().next().unwrap(), generics, is_ref, ptr_for_ref, true);
}
write!(w, "{}{}", prefix, var).unwrap();
write!(&mut var, "{}", var_name).unwrap();
let var_access = String::from_utf8(var.into_inner()).unwrap();
- let conv_ty = if needs_ref_map { only_contained_type.as_ref().unwrap() } else { ty };
+ let conv_ty = if needs_ref_map { only_contained_type_nonref.as_ref().unwrap() } else { ty };
write!(w, "{} {{ ", pfx).unwrap();
let new_var_name = format!("{}_{}", ident, idx);
- let new_var = self.write_conversion_new_var_intern(w, &syn::Ident::new(&new_var_name, Span::call_site()),
- &var_access, conv_ty, generics, contains_slice || (is_ref && ty_has_inner), ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix);
+ let new_var = self.write_conversion_new_var_intern(w, &format_ident!("{}", new_var_name),
+ &var_access, conv_ty, generics, contains_slice || (is_ref && ty_has_inner), ptr_for_ref,
+ to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix);
if new_var { write!(w, " ").unwrap(); }
- if (!only_contained_has_inner || !to_c) && !contains_slice {
+
+ if prefix_location == ContainerPrefixLocation::PerConv {
var_prefix(w, conv_ty, generics, is_ref && ty_has_inner, ptr_for_ref, false);
+ } else if !is_ref && !needs_ref_map && to_c && only_contained_has_inner {
+ write!(w, "ObjOps::heap_alloc(").unwrap();
}
- if !is_ref && !needs_ref_map && to_c && only_contained_has_inner {
- write!(w, "Box::into_raw(Box::new(").unwrap();
- }
- write!(w, "{}{}", if contains_slice { "local_" } else { "" }, if new_var { new_var_name } else { var_access }).unwrap();
- if (!only_contained_has_inner || !to_c) && !contains_slice {
+ write!(w, "{}{}", if contains_slice && !to_c { "local_" } else { "" }, if new_var { new_var_name } else { var_access }).unwrap();
+ if prefix_location == ContainerPrefixLocation::PerConv {
var_suffix(w, conv_ty, generics, is_ref && ty_has_inner, ptr_for_ref, false);
- }
- if !is_ref && !needs_ref_map && to_c && only_contained_has_inner {
- write!(w, "))").unwrap();
+ } else if !is_ref && !needs_ref_map && to_c && only_contained_has_inner {
+ write!(w, ")").unwrap();
}
write!(w, " }}").unwrap();
}
write!(w, "{}", suffix).unwrap();
- if only_contained_has_inner && to_c {
+ if prefix_location == ContainerPrefixLocation::OutsideConv {
var_suffix(w, $args_iter().next().unwrap(), generics, is_ref, ptr_for_ref, true);
}
write!(w, ";").unwrap();
write!(w, ".map(|a| &a[..])").unwrap();
}
write!(w, ";").unwrap();
+ } else if to_c && $container_type == "Option" && contains_slice {
+ write!(w, " let mut local_{} = *local_{}_base;", ident, ident).unwrap();
}
return true;
}
} }
}
- match t {
+ match generics.resolve_type(t) {
syn::Type::Reference(r) => {
if let syn::Type::Slice(_) = &*r.elem {
- self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, is_ref, ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix)
+ self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, is_ref, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix)
} else {
- self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, true, ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix)
+ self.write_conversion_new_var_intern(w, ident, var, &*r.elem, generics, true, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix)
}
},
syn::Type::Path(p) => {
}
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_new_var_intern(w, ident, var, aliased_type, None, is_ref, ptr_for_ref, to_c, path_lookup, container_lookup, var_prefix, var_suffix);
+ return self.write_conversion_new_var_intern(w, ident, var, aliased_type, None, is_ref, ptr_for_ref, to_c, from_ownable_ref, path_lookup, container_lookup, var_prefix, var_suffix);
}
- if self.is_known_container(&resolved_path, is_ref) || self.is_transparent_container(&resolved_path, is_ref) {
+ if self.is_known_container(&resolved_path, is_ref) || self.is_path_transparent_container(&p.path, generics, is_ref) {
if let syn::PathArguments::AngleBracketed(args) = &p.path.segments.iter().next().unwrap().arguments {
convert_container!(resolved_path, args.args.len(), || args.args.iter().map(|arg| {
if let syn::GenericArgument::Type(ty) = arg {
- ty
+ generics.resolve_type(ty)
} else { unimplemented!(); }
}));
} else { unimplemented!(); }
true
} else { false }
} else if let syn::Type::Reference(ty) = &*s.elem {
- let tyref = [&*ty.elem];
+ let tyref = if from_ownable_ref || !to_c { [&*ty.elem] } else { [&*s.elem] };
is_ref = true;
- convert_container!("Slice", 1, || tyref.iter());
+ convert_container!("Slice", 1, || tyref.iter().map(|t| generics.resolve_type(*t)));
unimplemented!("convert_container should return true as container_lookup should succeed for slices");
} else if let syn::Type::Tuple(t) = &*s.elem {
// When mapping into a temporary new var, we need to own all the underlying objects.
for (idx, elem) in t.elems.iter().enumerate() {
if let syn::Type::Path(p) = elem {
let v_name = format!("orig_{}_{}", ident, idx);
- let tuple_elem_ident = syn::Ident::new(&v_name, Span::call_site());
+ let tuple_elem_ident = format_ident!("{}", &v_name);
if self.write_conversion_new_var_intern(w, &tuple_elem_ident, &v_name, elem, generics,
- false, ptr_for_ref, to_c,
+ false, ptr_for_ref, to_c, from_ownable_ref,
path_lookup, container_lookup, var_prefix, var_suffix) {
write!(w, " ").unwrap();
// Opaque types with inner pointers shouldn't ever create new stack
}
}
- pub fn write_to_c_conversion_new_var_inner<W: std::io::Write>(&self, w: &mut W, ident: &syn::Ident, var_access: &str, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) -> bool {
- self.write_conversion_new_var_intern(w, ident, var_access, t, generics, false, ptr_for_ref, true,
+ pub fn write_to_c_conversion_new_var_inner<W: std::io::Write>(&self, w: &mut W, ident: &syn::Ident, var_access: &str, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool, from_ownable_ref: bool) -> bool {
+ self.write_conversion_new_var_intern(w, ident, var_access, t, generics, false, ptr_for_ref, true, from_ownable_ref,
&|a, b| self.to_c_conversion_new_var_from_path(a, b),
&|a, b, c, d, e| self.to_c_conversion_container_new_var(generics, a, b, c, d, e),
// We force ptr_for_ref here since we can't generate a ref on one line and use it later
&|a, b, c, d, e, f| self.write_to_c_conversion_inline_suffix_inner(a, b, c, d, e, f))
}
pub fn write_to_c_conversion_new_var<W: std::io::Write>(&self, w: &mut W, ident: &syn::Ident, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) -> bool {
- self.write_to_c_conversion_new_var_inner(w, ident, &format!("{}", ident), t, generics, ptr_for_ref)
+ self.write_to_c_conversion_new_var_inner(w, ident, &format!("{}", ident), t, generics, ptr_for_ref, false)
+ }
+ /// Prints new-var conversion for an "ownable_ref" type, ie prints conversion for
+ /// `create_ownable_reference(t)`, not `t` itself.
+ pub fn write_to_c_conversion_from_ownable_ref_new_var<W: std::io::Write>(&self, w: &mut W, ident: &syn::Ident, t: &syn::Type, generics: Option<&GenericTypes>) -> bool {
+ self.write_to_c_conversion_new_var_inner(w, ident, &format!("{}", ident), t, generics, true, true)
}
pub fn write_from_c_conversion_new_var<W: std::io::Write>(&self, w: &mut W, ident: &syn::Ident, t: &syn::Type, generics: Option<&GenericTypes>) -> bool {
- self.write_conversion_new_var_intern(w, ident, &format!("{}", ident), t, generics, false, false, false,
+ self.write_conversion_new_var_intern(w, ident, &format!("{}", ident), t, generics, false, false, false, false,
&|a, b| self.from_c_conversion_new_var_from_path(a, b),
&|a, b, c, d, e| self.from_c_conversion_container_new_var(generics, a, b, c, d, e),
// We force ptr_for_ref here since we can't generate a ref on one line and use it later
// *** C Container Type Equivalent and alias Printing ***
// ******************************************************
- fn write_template_generics<'b, W: std::io::Write>(&mut self, w: &mut W, args: &mut dyn Iterator<Item=&'b syn::Type>, generics: Option<&GenericTypes>, is_ref: bool) -> bool {
- assert!(!is_ref); // We don't currently support outer reference types
+ fn write_template_generics<'b, W: std::io::Write>(&self, w: &mut W, args: &mut dyn Iterator<Item=&'b syn::Type>, generics: Option<&GenericTypes>, is_ref: bool) -> bool {
for (idx, t) in args.enumerate() {
if idx != 0 {
write!(w, ", ").unwrap();
}
if let syn::Type::Reference(r_arg) = t {
- if !self.write_c_type_intern(w, &*r_arg.elem, generics, false, false, false) { return false; }
+ assert!(!is_ref); // We don't currently support outer reference types for non-primitive inners
+
+ if !self.write_c_type_intern(w, &*r_arg.elem, generics, false, false, false, false) { return false; }
// While write_c_type_intern, above is correct, we don't want to blindly convert a
// reference to something stupid, so check that the container is either opaque or a
assert!(self.crate_types.opaques.get(&resolved).is_some() ||
self.c_type_from_path(&resolved, true, true).is_some(), "Template generics should be opaque or have a predefined mapping");
} else { unimplemented!(); }
+ } else if let syn::Type::Path(p_arg) = t {
+ if let Some(resolved) = self.maybe_resolve_path(&p_arg.path, generics) {
+ if !self.is_primitive(&resolved) {
+ assert!(!is_ref); // We don't currently support outer reference types for non-primitive inners
+ }
+ } else {
+ assert!(!is_ref); // We don't currently support outer reference types for non-primitive inners
+ }
+ if !self.write_c_type_intern(w, t, generics, false, false, false, false) { return false; }
} else {
- if !self.write_c_type_intern(w, t, generics, false, false, false) { return false; }
+ // We don't currently support outer reference types for non-primitive inners,
+ // except for the empty tuple.
+ if let syn::Type::Tuple(t_arg) = t {
+ assert!(t_arg.elems.len() == 0 || !is_ref);
+ } else {
+ assert!(!is_ref);
+ }
+ if !self.write_c_type_intern(w, t, generics, false, false, false, false) { return false; }
}
}
true
}
- fn check_create_container(&mut self, mangled_container: String, container_type: &str, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, is_ref: bool) -> bool {
- if !self.crate_types.templates_defined.get(&mangled_container).is_some() {
+ fn check_create_container(&self, mangled_container: String, container_type: &str, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, is_ref: bool) -> bool {
+ if !self.crate_types.templates_defined.borrow().get(&mangled_container).is_some() {
let mut created_container: Vec<u8> = Vec::new();
if container_type == "Result" {
let is_clonable = self.is_clonable(&ok_str) && self.is_clonable(&err_str);
write_result_block(&mut created_container, &mangled_container, &ok_str, &err_str, is_clonable);
if is_clonable {
- self.crate_types.clonable_types.insert(Self::generated_container_path().to_owned() + "::" + &mangled_container);
+ self.crate_types.set_clonable(Self::generated_container_path().to_owned() + "::" + &mangled_container);
}
} else if container_type == "Vec" {
let mut a_ty: Vec<u8> = Vec::new();
let is_clonable = self.is_clonable(&ty);
write_vec_block(&mut created_container, &mangled_container, &ty, is_clonable);
if is_clonable {
- self.crate_types.clonable_types.insert(Self::generated_container_path().to_owned() + "::" + &mangled_container);
+ self.crate_types.set_clonable(Self::generated_container_path().to_owned() + "::" + &mangled_container);
}
} else if container_type.ends_with("Tuple") {
let mut tuple_args = Vec::new();
}
write_tuple_block(&mut created_container, &mangled_container, &tuple_args, is_clonable);
if is_clonable {
- self.crate_types.clonable_types.insert(Self::generated_container_path().to_owned() + "::" + &mangled_container);
+ self.crate_types.set_clonable(Self::generated_container_path().to_owned() + "::" + &mangled_container);
+ }
+ } else if container_type == "Option" {
+ let mut a_ty: Vec<u8> = Vec::new();
+ if !self.write_template_generics(&mut a_ty, &mut args.iter().map(|t| *t), generics, is_ref) { return false; }
+ let ty = String::from_utf8(a_ty).unwrap();
+ let is_clonable = self.is_clonable(&ty);
+ write_option_block(&mut created_container, &mangled_container, &ty, is_clonable);
+ if is_clonable {
+ self.crate_types.set_clonable(Self::generated_container_path().to_owned() + "::" + &mangled_container);
}
} else {
unreachable!();
}
- self.crate_types.templates_defined.insert(mangled_container.clone(), true);
-
- self.crate_types.template_file.write(&created_container).unwrap();
+ self.crate_types.write_new_template(mangled_container.clone(), true, &created_container);
}
true
}
} else { unimplemented!(); }
}
fn write_c_mangled_container_path_intern<W: std::io::Write>
- (&mut self, w: &mut W, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, ident: &str, is_ref: bool, is_mut: bool, ptr_for_ref: bool, in_type: bool) -> bool {
+ (&self, w: &mut W, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, ident: &str, is_ref: bool, is_mut: bool, ptr_for_ref: bool, in_type: bool) -> bool {
let mut mangled_type: Vec<u8> = Vec::new();
- if !self.is_transparent_container(ident, is_ref) {
+ if !self.is_transparent_container(ident, is_ref, args.iter().map(|a| *a), generics) {
write!(w, "C{}_", ident).unwrap();
write!(mangled_type, "C{}_", ident).unwrap();
} else { assert_eq!(args.len(), 1); }
macro_rules! write_path {
($p_arg: expr, $extra_write: expr) => {
if let Some(subtype) = self.maybe_resolve_path(&$p_arg.path, generics) {
- if self.is_transparent_container(ident, is_ref) {
- // We dont (yet) support primitives or containers inside transparent
- // containers, so check for that first:
- if self.is_primitive(&subtype) { return false; }
- if self.is_known_container(&subtype, is_ref) { return false; }
+ if self.is_transparent_container(ident, is_ref, args.iter().map(|a| *a), generics) {
if !in_type {
if self.c_type_has_inner_from_path(&subtype) {
- if !self.write_c_path_intern(w, &$p_arg.path, generics, is_ref, is_mut, ptr_for_ref) { return false; }
+ if !self.write_c_path_intern(w, &$p_arg.path, generics, is_ref, is_mut, ptr_for_ref, false) { return false; }
} else {
- // Option<T> needs to be converted to a *mut T, ie mut ptr-for-ref
- if !self.write_c_path_intern(w, &$p_arg.path, generics, true, true, true) { return false; }
+ if let Some(arr_ty) = self.is_real_type_array(&subtype) {
+ if !self.write_c_type_intern(w, &arr_ty, generics, false, true, false, false) { return false; }
+ } else {
+ // Option<T> needs to be converted to a *mut T, ie mut ptr-for-ref
+ if !self.write_c_path_intern(w, &$p_arg.path, generics, true, true, true, false) { return false; }
+ }
}
} else {
write!(w, "{}", $p_arg.path.segments.last().unwrap().ident).unwrap();
}
- } else if self.is_known_container(&subtype, is_ref) || self.is_transparent_container(&subtype, is_ref) {
+ } else if self.is_known_container(&subtype, is_ref) || self.is_path_transparent_container(&$p_arg.path, generics, is_ref) {
if !self.write_c_mangled_container_path_intern(w, Self::path_to_generic_args(&$p_arg.path), generics,
&subtype, is_ref, is_mut, ptr_for_ref, true) {
return false;
} else { return false; }
}
}
- if let syn::Type::Tuple(tuple) = arg {
- if tuple.elems.len() == 0 {
- write!(w, "None").unwrap();
- write!(mangled_type, "None").unwrap();
- } else {
- let mut mangled_tuple_type: Vec<u8> = Vec::new();
-
- // Figure out what the mangled type should look like. To disambiguate
- // ((A, B), C) and (A, B, C) we prefix the generic args with a _ and suffix
- // them with a Z. Ideally we wouldn't use Z, but not many special chars are
- // available for use in type names.
- write!(w, "C{}Tuple_", tuple.elems.len()).unwrap();
- write!(mangled_type, "C{}Tuple_", tuple.elems.len()).unwrap();
- write!(mangled_tuple_type, "C{}Tuple_", tuple.elems.len()).unwrap();
- for elem in tuple.elems.iter() {
- if let syn::Type::Path(p) = elem {
- write_path!(p, Some(&mut mangled_tuple_type));
- } else if let syn::Type::Reference(refelem) = elem {
- if let syn::Type::Path(p) = &*refelem.elem {
+ match generics.resolve_type(arg) {
+ syn::Type::Tuple(tuple) => {
+ if tuple.elems.len() == 0 {
+ write!(w, "None").unwrap();
+ write!(mangled_type, "None").unwrap();
+ } else {
+ let mut mangled_tuple_type: Vec<u8> = Vec::new();
+
+ // Figure out what the mangled type should look like. To disambiguate
+ // ((A, B), C) and (A, B, C) we prefix the generic args with a _ and suffix
+ // them with a Z. Ideally we wouldn't use Z, but not many special chars are
+ // available for use in type names.
+ write!(w, "C{}Tuple_", tuple.elems.len()).unwrap();
+ write!(mangled_type, "C{}Tuple_", tuple.elems.len()).unwrap();
+ write!(mangled_tuple_type, "C{}Tuple_", tuple.elems.len()).unwrap();
+ for elem in tuple.elems.iter() {
+ if let syn::Type::Path(p) = elem {
write_path!(p, Some(&mut mangled_tuple_type));
+ } else if let syn::Type::Reference(refelem) = elem {
+ if let syn::Type::Path(p) = &*refelem.elem {
+ write_path!(p, Some(&mut mangled_tuple_type));
+ } else { return false; }
} else { return false; }
- } else { return false; }
- }
- write!(w, "Z").unwrap();
- write!(mangled_type, "Z").unwrap();
- write!(mangled_tuple_type, "Z").unwrap();
- if !self.check_create_container(String::from_utf8(mangled_tuple_type).unwrap(),
- &format!("{}Tuple", tuple.elems.len()), tuple.elems.iter().collect(), generics, is_ref) {
- return false;
+ }
+ write!(w, "Z").unwrap();
+ write!(mangled_type, "Z").unwrap();
+ write!(mangled_tuple_type, "Z").unwrap();
+ if !self.check_create_container(String::from_utf8(mangled_tuple_type).unwrap(),
+ &format!("{}Tuple", tuple.elems.len()), tuple.elems.iter().collect(), generics, is_ref) {
+ return false;
+ }
}
- }
- } else if let syn::Type::Path(p_arg) = arg {
- write_path!(p_arg, None);
- } else if let syn::Type::Reference(refty) = arg {
- if let syn::Type::Path(p_arg) = &*refty.elem {
+ },
+ syn::Type::Path(p_arg) => {
write_path!(p_arg, None);
- } else if let syn::Type::Slice(_) = &*refty.elem {
- // write_c_type will actually do exactly what we want here, we just need to
- // make it a pointer so that its an option. Note that we cannot always convert
- // the Vec-as-slice (ie non-ref types) containers, so sometimes need to be able
- // to edit it, hence we use *mut here instead of *const.
- if args.len() != 1 { return false; }
- write!(w, "*mut ").unwrap();
- self.write_c_type(w, arg, None, true);
- } else { return false; }
- } else if let syn::Type::Array(a) = arg {
- if let syn::Type::Path(p_arg) = &*a.elem {
- let resolved = self.resolve_path(&p_arg.path, generics);
- if !self.is_primitive(&resolved) { return false; }
- if let syn::Expr::Lit(syn::ExprLit { lit: syn::Lit::Int(len), .. }) = &a.len {
- if self.c_type_from_path(&format!("[{}; {}]", resolved, len.base10_digits()), is_ref, ptr_for_ref).is_none() { return false; }
- write!(w, "_{}{}", resolved, len.base10_digits()).unwrap();
- write!(mangled_type, "_{}{}", resolved, len.base10_digits()).unwrap();
+ },
+ syn::Type::Reference(refty) => {
+ if let syn::Type::Path(p_arg) = &*refty.elem {
+ write_path!(p_arg, None);
+ } else if let syn::Type::Slice(_) = &*refty.elem {
+ // write_c_type will actually do exactly what we want here, we just need to
+ // make it a pointer so that its an option. Note that we cannot always convert
+ // the Vec-as-slice (ie non-ref types) containers, so sometimes need to be able
+ // to edit it, hence we use *mut here instead of *const.
+ if args.len() != 1 { return false; }
+ write!(w, "*mut ").unwrap();
+ self.write_c_type(w, arg, None, true);
} else { return false; }
- } else { return false; }
- } else { return false; }
+ },
+ syn::Type::Array(a) => {
+ if let syn::Type::Path(p_arg) = &*a.elem {
+ let resolved = self.resolve_path(&p_arg.path, generics);
+ if !self.is_primitive(&resolved) { return false; }
+ if let syn::Expr::Lit(syn::ExprLit { lit: syn::Lit::Int(len), .. }) = &a.len {
+ if self.c_type_from_path(&format!("[{}; {}]", resolved, len.base10_digits()), is_ref, ptr_for_ref).is_none() { return false; }
+ write!(w, "_{}{}", resolved, len.base10_digits()).unwrap();
+ write!(mangled_type, "_{}{}", resolved, len.base10_digits()).unwrap();
+ } else { return false; }
+ } else { return false; }
+ },
+ _ => { return false; },
+ }
}
- if self.is_transparent_container(ident, is_ref) { return true; }
+ if self.is_transparent_container(ident, is_ref, args.iter().map(|a| *a), generics) { return true; }
// Push the "end of type" Z
write!(w, "Z").unwrap();
write!(mangled_type, "Z").unwrap();
// Make sure the type is actually defined:
self.check_create_container(String::from_utf8(mangled_type).unwrap(), ident, args, generics, is_ref)
}
- fn write_c_mangled_container_path<W: std::io::Write>(&mut self, w: &mut W, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, ident: &str, is_ref: bool, is_mut: bool, ptr_for_ref: bool) -> bool {
- if !self.is_transparent_container(ident, is_ref) {
+ fn write_c_mangled_container_path<W: std::io::Write>(&self, w: &mut W, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, ident: &str, is_ref: bool, is_mut: bool, ptr_for_ref: bool) -> bool {
+ if !self.is_transparent_container(ident, is_ref, args.iter().map(|a| *a), generics) {
write!(w, "{}::", Self::generated_container_path()).unwrap();
}
self.write_c_mangled_container_path_intern(w, args, generics, ident, is_ref, is_mut, ptr_for_ref, false)
}
+ pub fn get_c_mangled_container_type(&self, args: Vec<&syn::Type>, generics: Option<&GenericTypes>, template_name: &str) -> Option<String> {
+ let mut out = Vec::new();
+ if !self.write_c_mangled_container_path(&mut out, args, generics, template_name, false, false, false) {
+ return None;
+ }
+ Some(String::from_utf8(out).unwrap())
+ }
// **********************************
// *** C Type Equivalent Printing ***
// **********************************
- fn write_c_path_intern<W: std::io::Write>(&self, w: &mut W, path: &syn::Path, generics: Option<&GenericTypes>, is_ref: bool, is_mut: bool, ptr_for_ref: bool) -> bool {
+ fn write_c_path_intern<W: std::io::Write>(&self, w: &mut W, path: &syn::Path, generics: Option<&GenericTypes>, is_ref: bool, is_mut: bool, ptr_for_ref: bool, with_ref_lifetime: bool) -> bool {
let full_path = match self.maybe_resolve_path(&path, generics) {
Some(path) => path, None => return false };
if let Some(c_type) = self.c_type_from_path(&full_path, is_ref, ptr_for_ref) {
if is_ref && ptr_for_ref {
write!(w, "*{} crate::{}", if is_mut { "mut" } else { "const" }, full_path).unwrap();
} else if is_ref {
+ if with_ref_lifetime { unimplemented!(); }
write!(w, "&{}crate::{}", if is_mut { "mut " } else { "" }, full_path).unwrap();
} else {
write!(w, "crate::{}", full_path).unwrap();
// the actual object itself (for opaque types we'll set the pointer to the actual
// type and note that its a reference).
write!(w, "crate::{}", full_path).unwrap();
+ } else if is_ref && with_ref_lifetime {
+ assert!(!is_mut);
+ // If we're concretizing something with a lifetime parameter, we have to pick a
+ // lifetime, of which the only real available choice is `static`, obviously.
+ write!(w, "&'static ").unwrap();
+ self.write_rust_path(w, generics, path);
} else if is_ref {
write!(w, "&{}crate::{}", if is_mut { "mut " } else { "" }, full_path).unwrap();
} else {
false
}
}
- fn write_c_type_intern<W: std::io::Write>(&mut self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, is_mut: bool, ptr_for_ref: bool) -> bool {
- match t {
+ fn write_c_type_intern<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, is_ref: bool, is_mut: bool, ptr_for_ref: bool, with_ref_lifetime: bool) -> bool {
+ match generics.resolve_type(t) {
syn::Type::Path(p) => {
if p.qself.is_some() {
return false;
}
if let Some(full_path) = self.maybe_resolve_path(&p.path, generics) {
- if self.is_known_container(&full_path, is_ref) || self.is_transparent_container(&full_path, is_ref) {
+ if self.is_known_container(&full_path, is_ref) || self.is_path_transparent_container(&p.path, generics, is_ref) {
return self.write_c_mangled_container_path(w, Self::path_to_generic_args(&p.path), generics, &full_path, is_ref, is_mut, ptr_for_ref);
}
if let Some(aliased_type) = self.crate_types.type_aliases.get(&full_path).cloned() {
- return self.write_c_type_intern(w, &aliased_type, None, is_ref, is_mut, ptr_for_ref);
+ return self.write_c_type_intern(w, &aliased_type, None, is_ref, is_mut, ptr_for_ref, with_ref_lifetime);
}
}
- self.write_c_path_intern(w, &p.path, generics, is_ref, is_mut, ptr_for_ref)
+ self.write_c_path_intern(w, &p.path, generics, is_ref, is_mut, ptr_for_ref, with_ref_lifetime)
},
syn::Type::Reference(r) => {
- self.write_c_type_intern(w, &*r.elem, generics, true, r.mutability.is_some(), ptr_for_ref)
+ self.write_c_type_intern(w, &*r.elem, generics, true, r.mutability.is_some(), ptr_for_ref, with_ref_lifetime)
},
syn::Type::Array(a) => {
if is_ref && is_mut {
write!(w, "*mut [").unwrap();
- if !self.write_c_type_intern(w, &a.elem, generics, false, false, ptr_for_ref) { return false; }
+ if !self.write_c_type_intern(w, &a.elem, generics, false, false, ptr_for_ref, with_ref_lifetime) { return false; }
} else if is_ref {
write!(w, "*const [").unwrap();
- if !self.write_c_type_intern(w, &a.elem, generics, false, false, ptr_for_ref) { return false; }
+ if !self.write_c_type_intern(w, &a.elem, generics, false, false, ptr_for_ref, with_ref_lifetime) { return false; }
} else {
let mut typecheck = Vec::new();
- if !self.write_c_type_intern(&mut typecheck, &a.elem, generics, false, false, ptr_for_ref) { return false; }
+ if !self.write_c_type_intern(&mut typecheck, &a.elem, generics, false, false, ptr_for_ref, with_ref_lifetime) { return false; }
if typecheck[..] != ['u' as u8, '8' as u8] { return false; }
}
if let syn::Expr::Lit(l) = &a.len {
if let syn::Type::Path(p) = &*r.elem {
// Slices with "real types" inside are mapped as the equivalent non-ref Vec
let resolved = self.resolve_path(&p.path, generics);
- let mangled_container = if let Some(ident) = self.crate_types.opaques.get(&resolved) {
+ let mangled_container = if let Some((ident, _)) = self.crate_types.opaques.get(&resolved) {
format!("CVec_{}Z", ident)
} else if let Some(en) = self.crate_types.mirrored_enums.get(&resolved) {
format!("CVec_{}Z", en.ident)
} else { return false; };
write!(w, "{}::{}", Self::generated_container_path(), mangled_container).unwrap();
self.check_create_container(mangled_container, "Vec", vec![&*r.elem], generics, false)
+ } else if let syn::Type::Slice(sl2) = &*r.elem {
+ if let syn::Type::Reference(r2) = &*sl2.elem {
+ if let syn::Type::Path(p) = &*r2.elem {
+ // Slices with slices with opaque types (with is_owned flags) are mapped as non-ref Vecs
+ let resolved = self.resolve_path(&p.path, generics);
+ let mangled_container = if let Some((ident, _)) = self.crate_types.opaques.get(&resolved) {
+ format!("CVec_CVec_{}ZZ", ident)
+ } else { return false; };
+ write!(w, "{}::{}", Self::generated_container_path(), mangled_container).unwrap();
+ let inner = &r2.elem;
+ let vec_ty: syn::Type = syn::parse_quote!(Vec<#inner>);
+ self.check_create_container(mangled_container, "Vec", vec![&vec_ty], generics, false)
+ } else { false }
+ } else { false }
} else { false }
} else if let syn::Type::Tuple(_) = &*s.elem {
- let mut args = syn::punctuated::Punctuated::new();
+ let mut args = syn::punctuated::Punctuated::<_, syn::token::Comma>::new();
args.push(syn::GenericArgument::Type((*s.elem).clone()));
let mut segments = syn::punctuated::Punctuated::new();
- segments.push(syn::PathSegment {
- ident: syn::Ident::new("Vec", Span::call_site()),
- arguments: syn::PathArguments::AngleBracketed(syn::AngleBracketedGenericArguments {
- colon2_token: None, lt_token: syn::Token), args, gt_token: syn::Token),
- })
- });
- self.write_c_type_intern(w, &syn::Type::Path(syn::TypePath { qself: None, path: syn::Path { leading_colon: None, segments } }), generics, false, is_mut, ptr_for_ref)
+ segments.push(parse_quote!(Vec<#args>));
+ self.write_c_type_intern(w, &syn::Type::Path(syn::TypePath { qself: None, path: syn::Path { leading_colon: None, segments } }), generics, false, is_mut, ptr_for_ref, with_ref_lifetime)
} else { false }
},
syn::Type::Tuple(t) => {
_ => false,
}
}
- pub fn write_c_type<W: std::io::Write>(&mut self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) {
- assert!(self.write_c_type_intern(w, t, generics, false, false, ptr_for_ref));
+ pub fn write_c_type<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) {
+ assert!(self.write_c_type_intern(w, t, generics, false, false, ptr_for_ref, false));
+ }
+ pub fn write_c_type_in_generic_param<W: std::io::Write>(&self, w: &mut W, t: &syn::Type, generics: Option<&GenericTypes>, ptr_for_ref: bool) {
+ assert!(self.write_c_type_intern(w, t, generics, false, false, ptr_for_ref, true));
}
- pub fn understood_c_path(&mut self, p: &syn::Path) -> bool {
+ pub fn understood_c_path(&self, p: &syn::Path) -> bool {
if p.leading_colon.is_some() { return false; }
- self.write_c_path_intern(&mut std::io::sink(), p, None, false, false, false)
+ self.write_c_path_intern(&mut std::io::sink(), p, None, false, false, false, false)
}
- pub fn understood_c_type(&mut self, t: &syn::Type, generics: Option<&GenericTypes>) -> bool {
- self.write_c_type_intern(&mut std::io::sink(), t, generics, false, false, false)
+ pub fn understood_c_type(&self, t: &syn::Type, generics: Option<&GenericTypes>) -> bool {
+ self.write_c_type_intern(&mut std::io::sink(), t, generics, false, false, false, false)
}
}
projects / ldk-c-bindings / blobdiff