use std::env;
use std::fs::File;
use std::io::{Read, Write};
-use std::path::Path;
use std::process;
use proc_macro2::{TokenTree, TokenStream, Span};
writeln!(w, "\t\tret").unwrap();
writeln!(w, "\t}}\n}}").unwrap();
- if attrs_derives_clone(attrs) {
- writeln!(w, "impl Clone for {} {{", struct_name).unwrap();
- writeln!(w, "\tfn clone(&self) -> Self {{").unwrap();
- writeln!(w, "\t\tSelf {{").unwrap();
- writeln!(w, "\t\t\tinner: if self.inner.is_null() {{ std::ptr::null_mut() }} else {{").unwrap();
- writeln!(w, "\t\t\t\tBox::into_raw(Box::new(unsafe {{ &*self.inner }}.clone())) }},").unwrap();
- writeln!(w, "\t\t\tis_owned: true,").unwrap();
- writeln!(w, "\t\t}}\n\t}}\n}}").unwrap();
- writeln!(w, "#[allow(unused)]").unwrap();
- writeln!(w, "/// Used only if an object of this type is returned as a trait impl by a method").unwrap();
- writeln!(w, "pub(crate) extern \"C\" fn {}_clone_void(this_ptr: *const c_void) -> *mut c_void {{", struct_name).unwrap();
- writeln!(w, "\tBox::into_raw(Box::new(unsafe {{ (*(this_ptr as *mut native{})).clone() }})) as *mut c_void", struct_name).unwrap();
- writeln!(w, "}}").unwrap();
- writeln!(w, "#[no_mangle]").unwrap();
- writeln!(w, "pub extern \"C\" fn {}_clone(orig: &{}) -> {} {{", struct_name, struct_name, struct_name).unwrap();
- writeln!(w, "\torig.clone()").unwrap();
- writeln!(w, "}}").unwrap();
- }
-
write_cpp_wrapper(cpp_headers, &format!("{}", ident), true);
}
}
) );
write!(w, "\n").unwrap();
- } else if let Some(trait_ident) = trait_path.1.get_ident() {
- //XXX: implement for other things like ToString
- match &format!("{}", trait_ident) as &str {
- "From" => {},
- "Default" => {
- write!(w, "#[must_use]\n#[no_mangle]\npub extern \"C\" fn {}_default() -> {} {{\n", ident, ident).unwrap();
- write!(w, "\t{} {{ inner: Box::into_raw(Box::new(Default::default())), is_owned: true }}\n", ident).unwrap();
- write!(w, "}}\n").unwrap();
- },
- "PartialEq" => {},
- // If we have no generics, try a manual implementation:
- _ => maybe_convert_trait_impl(w, &trait_path.1, &*i.self_ty, types, &gen_types),
- }
+ } else if path_matches_nongeneric(&trait_path.1, &["From"]) {
+ } else if path_matches_nongeneric(&trait_path.1, &["Default"]) {
+ write!(w, "#[must_use]\n#[no_mangle]\npub extern \"C\" fn {}_default() -> {} {{\n", ident, ident).unwrap();
+ write!(w, "\t{} {{ inner: Box::into_raw(Box::new(Default::default())), is_owned: true }}\n", ident).unwrap();
+ write!(w, "}}\n").unwrap();
+ } else if path_matches_nongeneric(&trait_path.1, &["core", "cmp", "PartialEq"]) {
+ } else if path_matches_nongeneric(&trait_path.1, &["core", "clone", "Clone"]) && types.c_type_has_inner_from_path(&resolved_path) {
+ writeln!(w, "impl Clone for {} {{", ident).unwrap();
+ writeln!(w, "\tfn clone(&self) -> Self {{").unwrap();
+ writeln!(w, "\t\tSelf {{").unwrap();
+ writeln!(w, "\t\t\tinner: if self.inner.is_null() {{ std::ptr::null_mut() }} else {{").unwrap();
+ writeln!(w, "\t\t\t\tBox::into_raw(Box::new(unsafe {{ &*self.inner }}.clone())) }},").unwrap();
+ writeln!(w, "\t\t\tis_owned: true,").unwrap();
+ writeln!(w, "\t\t}}\n\t}}\n}}").unwrap();
+ writeln!(w, "#[allow(unused)]").unwrap();
+ writeln!(w, "/// Used only if an object of this type is returned as a trait impl by a method").unwrap();
+ writeln!(w, "pub(crate) extern \"C\" fn {}_clone_void(this_ptr: *const c_void) -> *mut c_void {{", ident).unwrap();
+ writeln!(w, "\tBox::into_raw(Box::new(unsafe {{ (*(this_ptr as *mut native{})).clone() }})) as *mut c_void", ident).unwrap();
+ writeln!(w, "}}").unwrap();
+ writeln!(w, "#[no_mangle]").unwrap();
+ writeln!(w, "pub extern \"C\" fn {}_clone(orig: &{}) -> {} {{", ident, ident, ident).unwrap();
+ writeln!(w, "\torig.clone()").unwrap();
+ writeln!(w, "}}").unwrap();
} else {
+ //XXX: implement for other things like ToString
// If we have no generics, try a manual implementation:
maybe_convert_trait_impl(w, &trait_path.1, &*i.self_ty, types, &gen_types);
}
// ********************************
// *** File/Crate Walking Logic ***
// ********************************
-
-/// Simple utility to walk the modules in a crate - iterating over the modules (with file paths) in
-/// a single File.
-struct FileIter<'a, I: Iterator<Item = &'a syn::Item>> {
- in_dir: &'a str,
- path: &'a str,
- module: &'a str,
- item_iter: I,
+/// A public module
+struct ASTModule {
+ pub attrs: Vec<syn::Attribute>,
+ pub items: Vec<syn::Item>,
+ pub submods: Vec<String>,
}
-impl<'a, I: Iterator<Item = &'a syn::Item>> Iterator for FileIter<'a, I> {
- type Item = (String, String, &'a syn::ItemMod);
- fn next(&mut self) -> std::option::Option<<Self as std::iter::Iterator>::Item> {
- loop {
- match self.item_iter.next() {
- Some(syn::Item::Mod(m)) => {
- if let syn::Visibility::Public(_) = m.vis {
- match export_status(&m.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
- }
-
- let f_path = format!("{}/{}.rs", (self.path.as_ref() as &Path).parent().unwrap().display(), m.ident);
- let new_mod = if self.module.is_empty() { format!("{}", m.ident) } else { format!("{}::{}", self.module, m.ident) };
- if let Ok(_) = File::open(&format!("{}/{}", self.in_dir, f_path)) {
- return Some((f_path, new_mod, m));
- } else {
- return Some((
- format!("{}/{}/mod.rs", (self.path.as_ref() as &Path).parent().unwrap().display(), m.ident),
- new_mod, m));
+/// A struct containing the syn::File AST for each file in the crate.
+struct FullLibraryAST {
+ modules: HashMap<String, ASTModule, NonRandomHash>,
+}
+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);
}
}
},
- Some(_) => {},
- None => return None,
+ _ => { non_mod_items.push(item); }
}
}
+ self.modules.insert(module, ASTModule { attrs, items: non_mod_items, submods });
}
-}
-fn file_iter<'a>(file: &'a syn::File, in_dir: &'a str, path: &'a str, module: &'a str) ->
- impl Iterator<Item = (String, String, &'a syn::ItemMod)> + 'a {
- FileIter { in_dir, path, module, item_iter: file.items.iter() }
-}
-/// A struct containing the syn::File AST for each file in the crate.
-struct FullLibraryAST {
- files: HashMap<String, syn::File>,
+ pub fn load_lib(lib: syn::File) -> Self {
+ assert_eq!(export_status(&lib.attrs), ExportStatus::Export);
+ let mut res = Self { modules: HashMap::default() };
+ res.load_module("".to_owned(), lib.attrs, lib.items);
+ res
+ }
}
/// Do the Real Work of mapping an original file to C-callable wrappers. Creates a new file at
/// `out_path` and fills it with wrapper structs/functions to allow calling the things in the AST
/// at `module` from C.
-fn convert_file<'a, 'b>(libast: &'a FullLibraryAST, crate_types: &mut CrateTypes<'a>, in_dir: &str, out_dir: &str, path: &str, orig_crate: &str, module: &str, header_file: &mut File, cpp_header_file: &mut File) {
- let syntax = if let Some(ast) = libast.files.get(module) { ast } else { return };
-
- assert!(syntax.shebang.is_none()); // Not sure what this is, hope we dont have one
-
- let new_file_path = format!("{}/{}", out_dir, path);
- let _ = std::fs::create_dir((&new_file_path.as_ref() as &std::path::Path).parent().unwrap());
- let mut out = std::fs::OpenOptions::new().write(true).create(true).truncate(true)
- .open(new_file_path).expect("Unable to open new src file");
-
- assert_eq!(export_status(&syntax.attrs), ExportStatus::Export);
- writeln_docs(&mut out, &syntax.attrs, "");
-
- if path.ends_with("/lib.rs") {
- // Special-case the top-level lib.rs with various lint allows and a pointer to the c_types
- // and bitcoin hand-written modules.
- writeln!(out, "#![allow(unknown_lints)]").unwrap();
- writeln!(out, "#![allow(non_camel_case_types)]").unwrap();
- writeln!(out, "#![allow(non_snake_case)]").unwrap();
- writeln!(out, "#![allow(unused_imports)]").unwrap();
- writeln!(out, "#![allow(unused_variables)]").unwrap();
- writeln!(out, "#![allow(unused_mut)]").unwrap();
- writeln!(out, "#![allow(unused_parens)]").unwrap();
- writeln!(out, "#![allow(unused_unsafe)]").unwrap();
- writeln!(out, "#![allow(unused_braces)]").unwrap();
- writeln!(out, "mod c_types;").unwrap();
- writeln!(out, "mod bitcoin;").unwrap();
- } else {
- writeln!(out, "\nuse std::ffi::c_void;\nuse bitcoin::hashes::Hash;\nuse crate::c_types::*;\n").unwrap();
- }
+fn convert_file<'a, 'b>(libast: &'a FullLibraryAST, crate_types: &mut CrateTypes<'a>, out_dir: &str, orig_crate: &str, header_file: &mut File, cpp_header_file: &mut File) {
+ for (module, astmod) in libast.modules.iter() {
+ let ASTModule { ref attrs, ref items, ref submods } = astmod;
+ assert_eq!(export_status(&attrs), ExportStatus::Export);
+
+ let new_file_path = if submods.is_empty() {
+ format!("{}/{}.rs", out_dir, module.replace("::", "/"))
+ } else if module != "" {
+ format!("{}/{}/mod.rs", out_dir, module.replace("::", "/"))
+ } else {
+ format!("{}/lib.rs", out_dir)
+ };
+ let _ = std::fs::create_dir((&new_file_path.as_ref() as &std::path::Path).parent().unwrap());
+ let mut out = std::fs::OpenOptions::new().write(true).create(true).truncate(true)
+ .open(new_file_path).expect("Unable to open new src file");
+
+ writeln_docs(&mut out, &attrs, "");
+
+ if module == "" {
+ // Special-case the top-level lib.rs with various lint allows and a pointer to the c_types
+ // and bitcoin hand-written modules.
+ writeln!(out, "#![allow(unknown_lints)]").unwrap();
+ writeln!(out, "#![allow(non_camel_case_types)]").unwrap();
+ writeln!(out, "#![allow(non_snake_case)]").unwrap();
+ writeln!(out, "#![allow(unused_imports)]").unwrap();
+ writeln!(out, "#![allow(unused_variables)]").unwrap();
+ writeln!(out, "#![allow(unused_mut)]").unwrap();
+ writeln!(out, "#![allow(unused_parens)]").unwrap();
+ writeln!(out, "#![allow(unused_unsafe)]").unwrap();
+ writeln!(out, "#![allow(unused_braces)]").unwrap();
+ writeln!(out, "mod c_types;").unwrap();
+ writeln!(out, "mod bitcoin;").unwrap();
+ } else {
+ writeln!(out, "\nuse std::ffi::c_void;\nuse bitcoin::hashes::Hash;\nuse crate::c_types::*;\n").unwrap();
+ }
- for (path, new_mod, m) in file_iter(&syntax, in_dir, path, &module) {
- writeln_docs(&mut out, &m.attrs, "");
- writeln!(out, "pub mod {};", m.ident).unwrap();
- convert_file(libast, crate_types, in_dir, out_dir, &path,
- orig_crate, &new_mod, header_file, cpp_header_file);
- }
+ for m in submods {
+ writeln!(out, "pub mod {};", m).unwrap();
+ }
- eprintln!("Converting {} entries...", path);
+ eprintln!("Converting {} entries...", module);
- let mut type_resolver = TypeResolver::new(orig_crate, module, crate_types);
+ let mut type_resolver = TypeResolver::new(orig_crate, module, crate_types);
- // First pass over the items and fill in imports and file-declared objects in the type resolver
- for item in syntax.items.iter() {
- match item {
- syn::Item::Use(u) => type_resolver.process_use(&mut out, &u),
- syn::Item::Struct(s) => {
- if let syn::Visibility::Public(_) = s.vis {
- declare_struct(&s, &mut type_resolver);
- }
- },
- syn::Item::Enum(e) => {
- if let syn::Visibility::Public(_) = e.vis {
- declare_enum(&e, &mut type_resolver);
- }
- },
- _ => {},
+ // First pass over the items and fill in imports and file-declared objects in the type resolver
+ for item in items.iter() {
+ match item {
+ syn::Item::Use(u) => type_resolver.process_use(&mut out, &u),
+ syn::Item::Struct(s) => {
+ if let syn::Visibility::Public(_) = s.vis {
+ declare_struct(&s, &mut type_resolver);
+ }
+ },
+ syn::Item::Enum(e) => {
+ if let syn::Visibility::Public(_) = e.vis {
+ declare_enum(&e, &mut type_resolver);
+ }
+ },
+ _ => {},
+ }
}
- }
- for item in syntax.items.iter() {
- match item {
- syn::Item::Use(_) => {}, // Handled above
- syn::Item::Static(_) => {},
- syn::Item::Enum(e) => {
- if let syn::Visibility::Public(_) = e.vis {
- writeln_enum(&mut out, &e, &mut type_resolver, header_file, cpp_header_file);
- }
- },
- syn::Item::Impl(i) => {
- writeln_impl(&mut out, &i, &mut type_resolver);
- },
- syn::Item::Struct(s) => {
- if let syn::Visibility::Public(_) = s.vis {
- writeln_struct(&mut out, &s, &mut type_resolver, header_file, cpp_header_file);
- }
- },
- syn::Item::Trait(t) => {
- if let syn::Visibility::Public(_) = t.vis {
- writeln_trait(&mut out, &t, &mut type_resolver, header_file, cpp_header_file);
- }
- },
- syn::Item::Mod(_) => {}, // We don't have to do anything - the top loop handles these.
- syn::Item::Const(c) => {
- // Re-export any primitive-type constants.
- if let syn::Visibility::Public(_) = c.vis {
- if let syn::Type::Path(p) = &*c.ty {
- let resolved_path = type_resolver.resolve_path(&p.path, None);
- if type_resolver.is_primitive(&resolved_path) {
- writeln!(out, "\n#[no_mangle]").unwrap();
- writeln!(out, "pub static {}: {} = {}::{}::{};", c.ident, resolved_path, orig_crate, module, c.ident).unwrap();
- }
+ for item in items.iter() {
+ match item {
+ syn::Item::Use(_) => {}, // Handled above
+ syn::Item::Static(_) => {},
+ syn::Item::Enum(e) => {
+ if let syn::Visibility::Public(_) = e.vis {
+ writeln_enum(&mut out, &e, &mut type_resolver, header_file, cpp_header_file);
}
- }
- },
- syn::Item::Type(t) => {
- if let syn::Visibility::Public(_) = t.vis {
- match export_status(&t.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ },
+ syn::Item::Impl(i) => {
+ writeln_impl(&mut out, &i, &mut type_resolver);
+ },
+ syn::Item::Struct(s) => {
+ if let syn::Visibility::Public(_) = s.vis {
+ writeln_struct(&mut out, &s, &mut type_resolver, header_file, cpp_header_file);
}
-
- let mut process_alias = true;
- for tok in t.generics.params.iter() {
- if let syn::GenericParam::Lifetime(_) = tok {}
- else { process_alias = false; }
+ },
+ syn::Item::Trait(t) => {
+ if let syn::Visibility::Public(_) = t.vis {
+ writeln_trait(&mut out, &t, &mut type_resolver, header_file, cpp_header_file);
}
- if process_alias {
- match &*t.ty {
- syn::Type::Path(_) =>
- writeln_opaque(&mut out, &t.ident, &format!("{}", t.ident), &t.generics, &t.attrs, &type_resolver, header_file, cpp_header_file),
- _ => {}
+ },
+ syn::Item::Mod(_) => {}, // We don't have to do anything - the top loop handles these.
+ syn::Item::Const(c) => {
+ // Re-export any primitive-type constants.
+ if let syn::Visibility::Public(_) = c.vis {
+ if let syn::Type::Path(p) = &*c.ty {
+ let resolved_path = type_resolver.resolve_path(&p.path, None);
+ if type_resolver.is_primitive(&resolved_path) {
+ writeln!(out, "\n#[no_mangle]").unwrap();
+ writeln!(out, "pub static {}: {} = {}::{}::{};", c.ident, resolved_path, orig_crate, module, c.ident).unwrap();
+ }
}
}
- }
- },
- syn::Item::Fn(f) => {
- if let syn::Visibility::Public(_) = f.vis {
- writeln_fn(&mut out, &f, &mut type_resolver);
- }
- },
- syn::Item::Macro(m) => {
- if m.ident.is_none() { // If its not a macro definition
- convert_macro(&mut out, &m.mac.path, &m.mac.tokens, &type_resolver);
- }
- },
- syn::Item::Verbatim(_) => {},
- syn::Item::ExternCrate(_) => {},
- _ => unimplemented!(),
- }
- }
-
- out.flush().unwrap();
-}
-
-/// Load the AST for each file in the crate, filling the FullLibraryAST object
-fn load_ast(in_dir: &str, path: &str, module: String, ast_storage: &mut FullLibraryAST) {
- eprintln!("Loading {}{}...", in_dir, path);
-
- let mut file = File::open(format!("{}/{}", in_dir, path)).expect("Unable to open file");
- let mut src = String::new();
- file.read_to_string(&mut src).expect("Unable to read file");
- let syntax = syn::parse_file(&src).expect("Unable to parse file");
+ },
+ syn::Item::Type(t) => {
+ if let syn::Visibility::Public(_) = t.vis {
+ match export_status(&t.attrs) {
+ ExportStatus::Export => {},
+ ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ }
- assert_eq!(export_status(&syntax.attrs), ExportStatus::Export);
+ let mut process_alias = true;
+ for tok in t.generics.params.iter() {
+ if let syn::GenericParam::Lifetime(_) = tok {}
+ else { process_alias = false; }
+ }
+ if process_alias {
+ match &*t.ty {
+ syn::Type::Path(_) =>
+ writeln_opaque(&mut out, &t.ident, &format!("{}", t.ident), &t.generics, &t.attrs, &type_resolver, header_file, cpp_header_file),
+ _ => {}
+ }
+ }
+ }
+ },
+ syn::Item::Fn(f) => {
+ if let syn::Visibility::Public(_) = f.vis {
+ writeln_fn(&mut out, &f, &mut type_resolver);
+ }
+ },
+ syn::Item::Macro(m) => {
+ if m.ident.is_none() { // If its not a macro definition
+ convert_macro(&mut out, &m.mac.path, &m.mac.tokens, &type_resolver);
+ }
+ },
+ syn::Item::Verbatim(_) => {},
+ syn::Item::ExternCrate(_) => {},
+ _ => unimplemented!(),
+ }
+ }
- for (path, new_mod, _) in file_iter(&syntax, in_dir, path, &module) {
- load_ast(in_dir, &path, new_mod, ast_storage);
+ out.flush().unwrap();
}
- ast_storage.files.insert(module, syntax);
}
/// Insert ident -> absolute Path resolutions into imports from the given UseTree and path-prefix.
}
/// Walk the FullLibraryAST, deciding how things will be mapped and adding tracking to CrateTypes.
-fn walk_ast<'a>(in_dir: &str, path: &str, module: String, ast_storage: &'a FullLibraryAST, crate_types: &mut CrateTypes<'a>) {
- let syntax = if let Some(ast) = ast_storage.files.get(&module) { ast } else { return };
- assert_eq!(export_status(&syntax.attrs), ExportStatus::Export);
-
- for (path, new_mod, _) in file_iter(&syntax, in_dir, path, &module) {
- walk_ast(in_dir, &path, new_mod, ast_storage, crate_types);
- }
-
- let mut import_maps = HashMap::new();
-
- for item in syntax.items.iter() {
- match item {
- syn::Item::Use(u) => {
- process_use_intern(&u.tree, syn::punctuated::Punctuated::new(), &mut import_maps);
- },
- syn::Item::Struct(s) => {
- if let syn::Visibility::Public(_) = s.vis {
- match export_status(&s.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
- }
- let struct_path = format!("{}::{}", module, s.ident);
- if attrs_derives_clone(&s.attrs) {
- crate_types.clonable_types.insert("crate::".to_owned() + &struct_path);
- }
-
- crate_types.opaques.insert(struct_path, &s.ident);
- }
- },
- syn::Item::Trait(t) => {
- if let syn::Visibility::Public(_) = t.vis {
- match export_status(&t.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
- }
- let trait_path = format!("{}::{}", module, t.ident);
- walk_supertraits!(t, None, (
- ("Clone", _) => {
- crate_types.clonable_types.insert("crate::".to_owned() + &trait_path);
- },
- (_, _) => {}
- ) );
- crate_types.traits.insert(trait_path, &t);
- }
- },
- syn::Item::Type(t) => {
- if let syn::Visibility::Public(_) = t.vis {
- match export_status(&t.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
- }
- let type_path = format!("{}::{}", module, t.ident);
- let mut process_alias = true;
- for tok in t.generics.params.iter() {
- if let syn::GenericParam::Lifetime(_) = tok {}
- else { process_alias = false; }
+fn walk_ast<'a>(ast_storage: &'a FullLibraryAST, crate_types: &mut CrateTypes<'a>) {
+ for (module, astmod) in ast_storage.modules.iter() {
+ let ASTModule { ref attrs, ref items, submods: _ } = astmod;
+ assert_eq!(export_status(&attrs), ExportStatus::Export);
+ let mut import_maps = HashMap::new();
+
+ for item in items.iter() {
+ match item {
+ syn::Item::Use(u) => {
+ process_use_intern(&u.tree, syn::punctuated::Punctuated::new(), &mut import_maps);
+ },
+ syn::Item::Struct(s) => {
+ if let syn::Visibility::Public(_) = s.vis {
+ match export_status(&s.attrs) {
+ ExportStatus::Export => {},
+ ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ }
+ let struct_path = format!("{}::{}", module, s.ident);
+ crate_types.opaques.insert(struct_path, &s.ident);
}
- if process_alias {
- match &*t.ty {
- syn::Type::Path(_) => {
- // If its a path with no generics, assume we don't map the aliased type and map it opaque
- crate_types.opaques.insert(type_path, &t.ident);
+ },
+ syn::Item::Trait(t) => {
+ if let syn::Visibility::Public(_) = t.vis {
+ match export_status(&t.attrs) {
+ ExportStatus::Export => {},
+ ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ }
+ let trait_path = format!("{}::{}", module, t.ident);
+ walk_supertraits!(t, None, (
+ ("Clone", _) => {
+ crate_types.clonable_types.insert("crate::".to_owned() + &trait_path);
},
- _ => {
- crate_types.type_aliases.insert(type_path, resolve_imported_refs(&import_maps, (*t.ty).clone()));
+ (_, _) => {}
+ ) );
+ crate_types.traits.insert(trait_path, &t);
+ }
+ },
+ syn::Item::Type(t) => {
+ if let syn::Visibility::Public(_) = t.vis {
+ match export_status(&t.attrs) {
+ ExportStatus::Export => {},
+ ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ }
+ let type_path = format!("{}::{}", module, t.ident);
+ let mut process_alias = true;
+ for tok in t.generics.params.iter() {
+ if let syn::GenericParam::Lifetime(_) = tok {}
+ else { process_alias = false; }
+ }
+ if process_alias {
+ match &*t.ty {
+ syn::Type::Path(_) => {
+ // If its a path with no generics, assume we don't map the aliased type and map it opaque
+ crate_types.opaques.insert(type_path, &t.ident);
+ },
+ _ => {
+ crate_types.type_aliases.insert(type_path, resolve_imported_refs(&import_maps, (*t.ty).clone()));
+ }
}
}
}
- }
- },
- syn::Item::Enum(e) if is_enum_opaque(e) => {
- if let syn::Visibility::Public(_) = e.vis {
- match export_status(&e.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
- }
- let enum_path = format!("{}::{}", module, e.ident);
- if attrs_derives_clone(&e.attrs) {
- crate_types.clonable_types.insert("crate::".to_owned() + &enum_path);
+ },
+ syn::Item::Enum(e) if is_enum_opaque(e) => {
+ if let syn::Visibility::Public(_) = e.vis {
+ match export_status(&e.attrs) {
+ ExportStatus::Export => {},
+ ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ }
+ let enum_path = format!("{}::{}", module, e.ident);
+ crate_types.opaques.insert(enum_path, &e.ident);
}
- crate_types.opaques.insert(enum_path, &e.ident);
- }
- },
- syn::Item::Enum(e) => {
- if let syn::Visibility::Public(_) = e.vis {
- match export_status(&e.attrs) {
- ExportStatus::Export => {},
- ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ },
+ syn::Item::Enum(e) => {
+ if let syn::Visibility::Public(_) = e.vis {
+ match export_status(&e.attrs) {
+ ExportStatus::Export => {},
+ ExportStatus::NoExport|ExportStatus::TestOnly => continue,
+ }
+ let enum_path = format!("{}::{}", module, e.ident);
+ crate_types.mirrored_enums.insert(enum_path, &e);
}
- let enum_path = format!("{}::{}", module, e.ident);
- if attrs_derives_clone(&e.attrs) {
- crate_types.clonable_types.insert("crate::".to_owned() + &enum_path);
+ },
+ syn::Item::Impl(i) => {
+ if let &syn::Type::Path(ref p) = &*i.self_ty {
+ if let Some(trait_path) = i.trait_.as_ref() {
+ if path_matches_nongeneric(&trait_path.1, &["core", "clone", "Clone"]) {
+ // Note, we should probably have more full-featured type resolution here,
+ // but for now we don't have any cases where we impl X for A::B.
+ let ident = single_ident_generic_path_to_ident(&p.path).expect("impl X for A::B currently unsupported");
+ assert!(import_maps.get(&ident).is_none());
+ crate_types.clonable_types.insert(format!("crate::{}::{}", module, ident));
+ }
+ }
}
- crate_types.mirrored_enums.insert(enum_path, &e);
- }
- },
- _ => {},
+ },
+ _ => {},
+ }
}
}
}
fn main() {
let args: Vec<String> = env::args().collect();
- if args.len() != 7 {
- eprintln!("Usage: source/dir target/dir source_crate_name derived_templates.rs extra/includes.h extra/cpp/includes.hpp");
+ if args.len() != 6 {
+ eprintln!("Usage: target/dir source_crate_name derived_templates.rs extra/includes.h extra/cpp/includes.hpp");
process::exit(1);
}
let mut derived_templates = std::fs::OpenOptions::new().write(true).create(true).truncate(true)
- .open(&args[4]).expect("Unable to open new header file");
+ .open(&args[3]).expect("Unable to open new header file");
let mut header_file = std::fs::OpenOptions::new().write(true).create(true).truncate(true)
- .open(&args[5]).expect("Unable to open new header file");
+ .open(&args[4]).expect("Unable to open new header file");
let mut cpp_header_file = std::fs::OpenOptions::new().write(true).create(true).truncate(true)
- .open(&args[6]).expect("Unable to open new header file");
+ .open(&args[5]).expect("Unable to open new header file");
writeln!(header_file, "#if defined(__GNUC__)").unwrap();
writeln!(header_file, "#define MUST_USE_STRUCT __attribute__((warn_unused))").unwrap();
// First parse the full crate's ASTs, caching them so that we can hold references to the AST
// objects in other datastructures:
- let mut libast = FullLibraryAST { files: HashMap::new() };
- load_ast(&args[1], "/lib.rs", "".to_string(), &mut libast);
+ let mut lib_src = String::new();
+ std::io::stdin().lock().read_to_string(&mut lib_src).unwrap();
+ let lib_syntax = syn::parse_file(&lib_src).expect("Unable to parse file");
+ let libast = FullLibraryAST::load_lib(lib_syntax);
// ...then walk the ASTs tracking what types we will map, and how, so that we can resolve them
// when parsing other file ASTs...
let mut libtypes = CrateTypes { traits: HashMap::new(), opaques: HashMap::new(), mirrored_enums: HashMap::new(),
type_aliases: HashMap::new(), templates_defined: HashMap::default(), template_file: &mut derived_templates,
clonable_types: HashSet::new() };
- walk_ast(&args[1], "/lib.rs", "".to_string(), &libast, &mut libtypes);
+ walk_ast(&libast, &mut libtypes);
// ... finally, do the actual file conversion/mapping, writing out types as we go.
- convert_file(&libast, &mut libtypes, &args[1], &args[2], "/lib.rs", &args[3], "", &mut header_file, &mut cpp_header_file);
+ convert_file(&libast, &mut libtypes, &args[1], &args[2], &mut header_file, &mut cpp_header_file);
// For container templates which we created while walking the crate, make sure we add C++
// mapped types so that C++ users can utilize the auto-destructors available.
projects / rust-lightning / commitdiff