use std::io::Write;
use std::hash;
+use crate::blocks::*;
+
use proc_macro2::{TokenTree, Span};
// The following utils are used purely to build our known types maps - they break down all the
} else { None }
}
-pub fn attrs_derives_clone(attrs: &[syn::Attribute]) -> bool {
- for attr in attrs.iter() {
- let tokens_clone = attr.tokens.clone();
- let mut token_iter = tokens_clone.into_iter();
- if let Some(token) = token_iter.next() {
- match token {
- TokenTree::Group(g) => {
- if format!("{}", single_ident_generic_path_to_ident(&attr.path).unwrap()) == "derive" {
- for id in g.stream().into_iter() {
- if let TokenTree::Ident(i) = id {
- if i == "Clone" {
- return true;
- }
- }
- }
- }
- },
- _ => {},
- }
- }
+pub fn path_matches_nongeneric(p: &syn::Path, exp: &[&str]) -> bool {
+ if p.segments.len() != exp.len() { return false; }
+ for (seg, e) in p.segments.iter().zip(exp.iter()) {
+ if seg.arguments != syn::PathArguments::None { return false; }
+ if &format!("{}", seg.ident) != *e { return false; }
}
- false
+ true
}
#[derive(Debug, PartialEq)]
if let syn::TraitBoundModifier::Maybe(_) = bound.modifier { unimplemented!(); }
}
+/// Returns true if the enum will be mapped as an opaue (ie struct with a pointer to the underlying
+/// type), otherwise it is mapped into a transparent, C-compatible version of itself.
+pub fn is_enum_opaque(e: &syn::ItemEnum) -> bool {
+ for var in e.variants.iter() {
+ if let syn::Fields::Named(fields) = &var.fields {
+ for field in fields.named.iter() {
+ match export_status(&field.attrs) {
+ ExportStatus::Export|ExportStatus::TestOnly => {},
+ ExportStatus::NoExport => return true,
+ }
+ }
+ } else if let syn::Fields::Unnamed(fields) = &var.fields {
+ for field in fields.unnamed.iter() {
+ match export_status(&field.attrs) {
+ ExportStatus::Export|ExportStatus::TestOnly => {},
+ ExportStatus::NoExport => return true,
+ }
+ }
+ }
+ }
+ false
+}
+
/// A stack of sets of generic resolutions.
///
/// This tracks the template parameters for a function, struct, or trait, allowing resolution into
if let Some(ident) = single_ident_generic_path_to_ident(&trait_bound.path) {
match &format!("{}", ident) as &str { "Send" => continue, "Sync" => continue, _ => {} }
}
+ if path_matches_nongeneric(&trait_bound.path, &["core", "clone", "Clone"]) { continue; }
assert_simple_bound(&trait_bound);
if let Some(mut path) = types.maybe_resolve_path(&trait_bound.path, None) {
EnumIgnored,
}
+pub struct ImportResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> {
+ module_path: &'mod_lifetime str,
+ imports: HashMap<syn::Ident, (String, syn::Path)>,
+ declared: HashMap<syn::Ident, DeclType<'crate_lft>>,
+ priv_modules: HashSet<syn::Ident>,
+}
+impl<'mod_lifetime, 'crate_lft: 'mod_lifetime> ImportResolver<'mod_lifetime, 'crate_lft> {
+ fn process_use_intern(imports: &mut HashMap<syn::Ident, (String, syn::Path)>, u: &syn::UseTree, partial_path: &str, mut path: syn::punctuated::Punctuated<syn::PathSegment, syn::token::Colon2>) {
+ match u {
+ syn::UseTree::Path(p) => {
+ let new_path = format!("{}{}::", partial_path, p.ident);
+ path.push(syn::PathSegment { ident: p.ident.clone(), arguments: syn::PathArguments::None });
+ Self::process_use_intern(imports, &p.tree, &new_path, path);
+ },
+ syn::UseTree::Name(n) => {
+ let full_path = format!("{}{}", partial_path, n.ident);
+ path.push(syn::PathSegment { ident: n.ident.clone(), arguments: syn::PathArguments::None });
+ imports.insert(n.ident.clone(), (full_path, syn::Path { leading_colon: Some(syn::Token)), segments: path }));
+ },
+ syn::UseTree::Group(g) => {
+ for i in g.items.iter() {
+ Self::process_use_intern(imports, i, partial_path, path.clone());
+ }
+ },
+ syn::UseTree::Rename(r) => {
+ let full_path = format!("{}{}", partial_path, r.ident);
+ path.push(syn::PathSegment { ident: r.ident.clone(), arguments: syn::PathArguments::None });
+ imports.insert(r.rename.clone(), (full_path, syn::Path { leading_colon: Some(syn::Token)), segments: path }));
+ },
+ syn::UseTree::Glob(_) => {
+ eprintln!("Ignoring * use for {} - this may result in resolution failures", partial_path);
+ },
+ }
+ }
+
+ fn process_use(imports: &mut HashMap<syn::Ident, (String, syn::Path)>, u: &syn::ItemUse) {
+ if let syn::Visibility::Public(_) = u.vis {
+ // We actually only use these for #[cfg(fuzztarget)]
+ eprintln!("Ignoring pub(use) tree!");
+ return;
+ }
+ if u.leading_colon.is_some() { eprintln!("Ignoring leading-colon use!"); return; }
+ Self::process_use_intern(imports, &u.tree, "", syn::punctuated::Punctuated::new());
+ }
+
+ fn insert_primitive(imports: &mut HashMap<syn::Ident, (String, syn::Path)>, id: &str) {
+ let ident = syn::Ident::new(id, Span::call_site());
+ let mut path = syn::punctuated::Punctuated::new();
+ path.push(syn::PathSegment { ident: ident.clone(), arguments: syn::PathArguments::None });
+ imports.insert(ident, (id.to_owned(), syn::Path { leading_colon: Some(syn::Token)), segments: path }));
+ }
+
+ pub fn new(module_path: &'mod_lifetime str, contents: &'crate_lft [syn::Item]) -> Self {
+ let mut imports = HashMap::new();
+ // Add primitives to the "imports" list:
+ Self::insert_primitive(&mut imports, "bool");
+ Self::insert_primitive(&mut imports, "u64");
+ Self::insert_primitive(&mut imports, "u32");
+ Self::insert_primitive(&mut imports, "u16");
+ Self::insert_primitive(&mut imports, "u8");
+ Self::insert_primitive(&mut imports, "usize");
+ Self::insert_primitive(&mut imports, "str");
+ Self::insert_primitive(&mut imports, "String");
+
+ // These are here to allow us to print native Rust types in trait fn impls even if we don't
+ // have C mappings:
+ Self::insert_primitive(&mut imports, "Result");
+ Self::insert_primitive(&mut imports, "Vec");
+ Self::insert_primitive(&mut imports, "Option");
+
+ let mut declared = HashMap::new();
+ let mut priv_modules = HashSet::new();
+
+ for item in contents.iter() {
+ match item {
+ syn::Item::Use(u) => Self::process_use(&mut imports, &u),
+ syn::Item::Struct(s) => {
+ if let syn::Visibility::Public(_) = s.vis {
+ match export_status(&s.attrs) {
+ ExportStatus::Export => { declared.insert(s.ident.clone(), DeclType::StructImported); },
+ ExportStatus::NoExport => { declared.insert(s.ident.clone(), DeclType::StructIgnored); },
+ ExportStatus::TestOnly => continue,
+ }
+ }
+ },
+ syn::Item::Type(t) if export_status(&t.attrs) == ExportStatus::Export => {
+ if let syn::Visibility::Public(_) = t.vis {
+ 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(_) => { declared.insert(t.ident.clone(), DeclType::StructImported); },
+ _ => {},
+ }
+ }
+ }
+ },
+ syn::Item::Enum(e) => {
+ if let syn::Visibility::Public(_) = e.vis {
+ match export_status(&e.attrs) {
+ ExportStatus::Export if is_enum_opaque(e) => { declared.insert(e.ident.clone(), DeclType::EnumIgnored); },
+ ExportStatus::Export => { declared.insert(e.ident.clone(), DeclType::MirroredEnum); },
+ _ => continue,
+ }
+ }
+ },
+ syn::Item::Trait(t) if export_status(&t.attrs) == ExportStatus::Export => {
+ if let syn::Visibility::Public(_) = t.vis {
+ declared.insert(t.ident.clone(), DeclType::Trait(t));
+ }
+ },
+ syn::Item::Mod(m) => {
+ priv_modules.insert(m.ident.clone());
+ },
+ _ => {},
+ }
+ }
+
+ Self { module_path, imports, declared, priv_modules }
+ }
+
+ pub fn get_declared_type(&self, ident: &syn::Ident) -> Option<&DeclType<'crate_lft>> {
+ self.declared.get(ident)
+ }
+
+ pub fn maybe_resolve_declared(&self, id: &syn::Ident) -> Option<&DeclType<'crate_lft>> {
+ self.declared.get(id)
+ }
+
+ pub fn maybe_resolve_ident(&self, id: &syn::Ident) -> Option<String> {
+ if let Some((imp, _)) = self.imports.get(id) {
+ Some(imp.clone())
+ } else if self.declared.get(id).is_some() {
+ Some(self.module_path.to_string() + "::" + &format!("{}", id))
+ } else { None }
+ }
+
+ pub fn maybe_resolve_non_ignored_ident(&self, id: &syn::Ident) -> Option<String> {
+ if let Some((imp, _)) = self.imports.get(id) {
+ Some(imp.clone())
+ } else if let Some(decl_type) = self.declared.get(id) {
+ match decl_type {
+ DeclType::StructIgnored => None,
+ _ => Some(self.module_path.to_string() + "::" + &format!("{}", id)),
+ }
+ } else { None }
+ }
+
+ pub fn maybe_resolve_path(&self, p_arg: &syn::Path, generics: Option<&GenericTypes>) -> Option<String> {
+ let p = if let Some(gen_types) = generics {
+ if let Some((_, synpath)) = gen_types.maybe_resolve_path(p_arg) {
+ synpath
+ } else { p_arg }
+ } else { p_arg };
+
+ if p.leading_colon.is_some() {
+ Some(p.segments.iter().enumerate().map(|(idx, seg)| {
+ format!("{}{}", if idx == 0 { "" } else { "::" }, seg.ident)
+ }).collect())
+ } else if let Some(id) = p.get_ident() {
+ self.maybe_resolve_ident(id)
+ } else {
+ if p.segments.len() == 1 {
+ let seg = p.segments.iter().next().unwrap();
+ return self.maybe_resolve_ident(&seg.ident);
+ }
+ let mut seg_iter = p.segments.iter();
+ let first_seg = seg_iter.next().unwrap();
+ let remaining: String = seg_iter.map(|seg| {
+ format!("::{}", seg.ident)
+ }).collect();
+ if let Some((imp, _)) = self.imports.get(&first_seg.ident) {
+ if remaining != "" {
+ Some(imp.clone() + &remaining)
+ } else {
+ Some(imp.clone())
+ }
+ } else if let Some(_) = self.priv_modules.get(&first_seg.ident) {
+ Some(format!("{}::{}{}", self.module_path, first_seg.ident, remaining))
+ } else { None }
+ }
+ }
+
+ /// Map all the Paths in a Type into absolute paths given a set of imports (generated via process_use_intern)
+ pub fn resolve_imported_refs(&self, mut ty: syn::Type) -> syn::Type {
+ match &mut ty {
+ syn::Type::Path(p) => {
+ if let Some(ident) = p.path.get_ident() {
+ if let Some((_, newpath)) = self.imports.get(ident) {
+ p.path = newpath.clone();
+ }
+ } else { unimplemented!(); }
+ },
+ syn::Type::Reference(r) => {
+ r.elem = Box::new(self.resolve_imported_refs((*r.elem).clone()));
+ },
+ syn::Type::Slice(s) => {
+ s.elem = Box::new(self.resolve_imported_refs((*s.elem).clone()));
+ },
+ syn::Type::Tuple(t) => {
+ for e in t.elems.iter_mut() {
+ *e = self.resolve_imported_refs(e.clone());
+ }
+ },
+ _ => unimplemented!(),
+ }
+ ty
+ }
+}
+
// templates_defined is walked to write the C++ header, so if we use the default hashing it get
// reordered on each genbindings run. Instead, we use SipHasher (which defaults to 0-keys) so that
// the sorting is stable across runs. It is deprecated, but the "replacement" doesn't actually
// accomplish the same goals, so we just ignore it.
#[allow(deprecated)]
-type NonRandomHash = hash::BuildHasherDefault<hash::SipHasher>;
+pub type NonRandomHash = hash::BuildHasherDefault<hash::SipHasher>;
/// Top-level struct tracking everything which has been defined while walking the crate.
pub struct CrateTypes<'a> {
pub traits: HashMap<String, &'a syn::ItemTrait>,
/// Aliases from paths to some other Type
pub type_aliases: HashMap<String, syn::Type>,
+ /// Value is an alias to Key (maybe with some generics)
+ pub reverse_alias_map: HashMap<String, Vec<(syn::Path, syn::PathArguments)>>,
/// Template continer types defined, map from mangled type name -> whether a destructor fn
/// exists.
///
pub template_file: &'a mut File,
/// Set of containers which are clonable
pub clonable_types: HashSet<String>,
+ /// Key impls Value
+ pub trait_impls: HashMap<String, Vec<String>>,
}
/// A struct which tracks resolving rust types into C-mapped equivalents, exists for one specific
pub struct TypeResolver<'mod_lifetime, 'crate_lft: 'mod_lifetime> {
pub orig_crate: &'mod_lifetime str,
pub module_path: &'mod_lifetime str,
- imports: HashMap<syn::Ident, String>,
- // ident -> is-mirrored-enum
- declared: HashMap<syn::Ident, DeclType<'crate_lft>>,
pub crate_types: &'mod_lifetime mut CrateTypes<'crate_lft>,
+ types: ImportResolver<'mod_lifetime, 'crate_lft>,
}
/// Returned by write_empty_rust_val_check_suffix to indicate what type of dereferencing needs to
}
impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
- pub fn new(orig_crate: &'a str, module_path: &'a str, crate_types: &'a mut CrateTypes<'c>) -> Self {
- let mut imports = HashMap::new();
- // Add primitives to the "imports" list:
- imports.insert(syn::Ident::new("bool", Span::call_site()), "bool".to_string());
- imports.insert(syn::Ident::new("u64", Span::call_site()), "u64".to_string());
- imports.insert(syn::Ident::new("u32", Span::call_site()), "u32".to_string());
- imports.insert(syn::Ident::new("u16", Span::call_site()), "u16".to_string());
- imports.insert(syn::Ident::new("u8", Span::call_site()), "u8".to_string());
- imports.insert(syn::Ident::new("usize", Span::call_site()), "usize".to_string());
- imports.insert(syn::Ident::new("str", Span::call_site()), "str".to_string());
- imports.insert(syn::Ident::new("String", Span::call_site()), "String".to_string());
-
- // These are here to allow us to print native Rust types in trait fn impls even if we don't
- // have C mappings:
- imports.insert(syn::Ident::new("Result", Span::call_site()), "Result".to_string());
- imports.insert(syn::Ident::new("Vec", Span::call_site()), "Vec".to_string());
- imports.insert(syn::Ident::new("Option", Span::call_site()), "Option".to_string());
- Self { orig_crate, module_path, imports, declared: HashMap::new(), crate_types }
+ pub fn new(orig_crate: &'a str, module_path: &'a str, types: ImportResolver<'a, 'c>, crate_types: &'a mut CrateTypes<'c>) -> Self {
+ Self { orig_crate, module_path, types, crate_types }
}
// *************************************************
/// Returns true we if can just skip passing this to C entirely
fn no_arg_path_to_rust(&self, full_path: &str) -> &str {
if full_path == "bitcoin::secp256k1::Secp256k1" {
- "&bitcoin::secp256k1::Secp256k1::new()"
+ "secp256k1::SECP256K1"
} else { unimplemented!(); }
}
}
/// Gets the C-mapped type for types which are outside of the crate, or which are manually
/// ignored by for some reason need mapping anyway.
- fn c_type_from_path<'b>(&self, full_path: &'b str, is_ref: bool, ptr_for_ref: bool) -> Option<&'b str> {
+ fn c_type_from_path<'b>(&self, full_path: &'b str, is_ref: bool, _ptr_for_ref: bool) -> Option<&'b str> {
if self.is_primitive(full_path) {
return Some(full_path);
}
// Override the default since Records contain an fmt with a lifetime:
"util::logger::Record" => Some("*const std::os::raw::c_char"),
- // List of structs we map that aren't detected:
- "ln::features::InitFeatures" if is_ref && ptr_for_ref => Some("crate::ln::features::InitFeatures"),
- "ln::features::InitFeatures" if is_ref => Some("*const crate::ln::features::InitFeatures"),
- "ln::features::InitFeatures" => Some("crate::ln::features::InitFeatures"),
- _ => {
- eprintln!(" Type {} (ref: {}) unresolvable in C", full_path, is_ref);
- None
- },
+ _ => None,
}
}
"ln::channelmanager::PaymentPreimage" if is_ref => Some("&::lightning::ln::channelmanager::PaymentPreimage(unsafe { *"),
"ln::channelmanager::PaymentSecret" => Some("::lightning::ln::channelmanager::PaymentSecret("),
- // List of structs we map (possibly during processing of other files):
- "ln::features::InitFeatures" if !is_ref => Some("*unsafe { Box::from_raw("),
-
// List of traits we map (possibly during processing of other files):
"crate::util::logger::Logger" => Some(""),
- _ => {
- eprintln!(" Type {} unconvertable from C", full_path);
- None
- },
+ _ => None,
}.map(|s| s.to_owned())
}
fn from_c_conversion_suffix_from_path<'b>(&self, full_path: &str, is_ref: bool) -> Option<String> {
"ln::channelmanager::PaymentPreimage" if is_ref => Some(" })"),
"ln::channelmanager::PaymentSecret" => Some(".data)"),
- // List of structs we map (possibly during processing of other files):
- "ln::features::InitFeatures" if is_ref => Some(".inner) }"),
- "ln::features::InitFeatures" if !is_ref => Some(".take_inner()) }"),
-
// List of traits we map (possibly during processing of other files):
"crate::util::logger::Logger" => Some(""),
- _ => {
- eprintln!(" Type {} unconvertable from C", full_path);
- None
- },
+ _ => None,
}.map(|s| s.to_owned())
}
_ => None,
}.map(|s| s.to_owned())
}
- fn to_c_conversion_inline_prefix_from_path(&self, full_path: &str, is_ref: bool, ptr_for_ref: bool) -> Option<String> {
+ fn to_c_conversion_inline_prefix_from_path(&self, full_path: &str, is_ref: bool, _ptr_for_ref: bool) -> Option<String> {
if self.is_primitive(full_path) {
return Some("".to_owned());
}
// Override the default since Records contain an fmt with a lifetime:
"util::logger::Record" => Some("local_"),
- // List of structs we map (possibly during processing of other files):
- "ln::features::InitFeatures" if is_ref && ptr_for_ref => Some("crate::ln::features::InitFeatures { inner: &mut "),
- "ln::features::InitFeatures" if is_ref => Some("Box::into_raw(Box::new(crate::ln::features::InitFeatures { inner: &mut "),
- "ln::features::InitFeatures" if !is_ref => Some("crate::ln::features::InitFeatures { inner: Box::into_raw(Box::new("),
-
- _ => {
- eprintln!(" Type {} (is_ref: {}) unconvertable to C", full_path, is_ref);
- None
- },
+ _ => None,
}.map(|s| s.to_owned())
}
- fn to_c_conversion_inline_suffix_from_path(&self, full_path: &str, is_ref: bool, ptr_for_ref: bool) -> Option<String> {
+ fn to_c_conversion_inline_suffix_from_path(&self, full_path: &str, is_ref: bool, _ptr_for_ref: bool) -> Option<String> {
if self.is_primitive(full_path) {
return Some("".to_owned());
}
// Override the default since Records contain an fmt with a lifetime:
"util::logger::Record" => Some(".as_ptr()"),
- // List of structs we map (possibly during processing of other files):
- "ln::features::InitFeatures" if is_ref && ptr_for_ref => Some(", is_owned: false }"),
- "ln::features::InitFeatures" if is_ref => Some(", is_owned: false }))"),
- "ln::features::InitFeatures" => Some(")), is_owned: true }"),
-
- _ => {
- eprintln!(" Type {} unconvertable to C", full_path);
- None
- },
+ _ => None,
}.map(|s| s.to_owned())
}
"Result" if !is_ref => {
Some(("match ",
vec![(" { Ok(mut o) => crate::c_types::CResultTempl::ok(".to_string(), "o".to_string()),
- ("), Err(mut e) => crate::c_types::CResultTempl::err(".to_string(), "e".to_string())],
- ") }"))
+ (").into(), Err(mut e) => crate::c_types::CResultTempl::err(".to_string(), "e".to_string())],
+ ").into() }"))
},
"Vec" if !is_ref => {
- Some(("Vec::new(); for item in ", vec![(format!(".drain(..) {{ local_{}.push(", var_name), "item".to_string())], "); }"))
+ Some(("Vec::new(); for mut item in ", vec![(format!(".drain(..) {{ local_{}.push(", var_name), "item".to_string())], "); }"))
},
"Slice" => {
Some(("Vec::new(); for item in ", vec![(format!(".iter() {{ local_{}.push(", var_name), "**item".to_string())], "); }"))
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_name)),
- ("), false => Err(".to_string(), format!("(*unsafe {{ Box::from_raw(<*mut _>::take_ptr(&mut {}.contents.err)) }})", var_name))],
+ 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 => {
if let Some(syn::Type::Path(p)) = single_contained {
if self.c_type_has_inner_from_path(&self.resolve_path(&p.path, generics)) {
if is_ref {
- return Some(("if ", vec![(".inner.is_null() { None } else { Some((*".to_string(), format!("{}", var_name))], ").clone()) }"))
+ return Some(("if ", vec![(".inner.is_null() { None } else { Some((*".to_string(), format!("{}", var_access))], ").clone()) }"))
} else {
- return Some(("if ", vec![(".inner.is_null() { None } else { Some(".to_string(), format!("{}", var_name))], ") }"));
+ return Some(("if ", vec![(".inner.is_null() { None } else { Some(".to_string(), format!("{}", var_access))], ") }"));
}
}
}
// *** Type definition during main.rs processing ***
// *************************************************
- fn process_use_intern<W: std::io::Write>(&mut self, w: &mut W, u: &syn::UseTree, partial_path: &str) {
- match u {
- syn::UseTree::Path(p) => {
- let new_path = format!("{}::{}", partial_path, p.ident);
- self.process_use_intern(w, &p.tree, &new_path);
- },
- syn::UseTree::Name(n) => {
- let full_path = format!("{}::{}", partial_path, n.ident);
- self.imports.insert(n.ident.clone(), full_path);
- },
- syn::UseTree::Group(g) => {
- for i in g.items.iter() {
- self.process_use_intern(w, i, partial_path);
- }
- },
- syn::UseTree::Rename(r) => {
- let full_path = format!("{}::{}", partial_path, r.ident);
- self.imports.insert(r.rename.clone(), full_path);
- },
- syn::UseTree::Glob(_) => {
- eprintln!("Ignoring * use for {} - this may result in resolution failures", partial_path);
- },
- }
- }
- pub fn process_use<W: std::io::Write>(&mut self, w: &mut W, u: &syn::ItemUse) {
- if let syn::Visibility::Public(_) = u.vis {
- // We actually only use these for #[cfg(fuzztarget)]
- eprintln!("Ignoring pub(use) tree!");
- return;
- }
- match &u.tree {
- syn::UseTree::Path(p) => {
- let new_path = format!("{}", p.ident);
- self.process_use_intern(w, &p.tree, &new_path);
- },
- syn::UseTree::Name(n) => {
- let full_path = format!("{}", n.ident);
- self.imports.insert(n.ident.clone(), full_path);
- },
- _ => unimplemented!(),
- }
- if u.leading_colon.is_some() { unimplemented!() }
- }
-
- pub fn mirrored_enum_declared(&mut self, ident: &syn::Ident) {
- eprintln!("{} mirrored", ident);
- self.declared.insert(ident.clone(), DeclType::MirroredEnum);
- }
- pub fn enum_ignored(&mut self, ident: &'c syn::Ident) {
- self.declared.insert(ident.clone(), DeclType::EnumIgnored);
- }
- pub fn struct_imported(&mut self, ident: &'c syn::Ident, named: String) {
- eprintln!("Imported {} as {}", ident, named);
- self.declared.insert(ident.clone(), DeclType::StructImported);
- }
- pub fn struct_ignored(&mut self, ident: &syn::Ident) {
- eprintln!("Not importing {}", ident);
- self.declared.insert(ident.clone(), DeclType::StructIgnored);
- }
- pub fn trait_declared(&mut self, ident: &syn::Ident, t: &'c syn::ItemTrait) {
- eprintln!("Trait {} created", ident);
- self.declared.insert(ident.clone(), DeclType::Trait(t));
- }
pub fn get_declared_type(&'a self, ident: &syn::Ident) -> Option<&'a DeclType<'c>> {
- self.declared.get(ident)
+ self.types.get_declared_type(ident)
}
/// Returns true if the object at the given path is mapped as X { inner: *mut origX, .. }.
pub fn c_type_has_inner_from_path(&self, full_path: &str) -> bool{
}
pub fn maybe_resolve_ident(&self, id: &syn::Ident) -> Option<String> {
- if let Some(imp) = self.imports.get(id) {
- Some(imp.clone())
- } else if self.declared.get(id).is_some() {
- Some(self.module_path.to_string() + "::" + &format!("{}", id))
- } else { None }
+ self.types.maybe_resolve_ident(id)
}
pub fn maybe_resolve_non_ignored_ident(&self, id: &syn::Ident) -> Option<String> {
- if let Some(imp) = self.imports.get(id) {
- Some(imp.clone())
- } else if let Some(decl_type) = self.declared.get(id) {
- match decl_type {
- DeclType::StructIgnored => None,
- _ => Some(self.module_path.to_string() + "::" + &format!("{}", id)),
- }
- } else { None }
+ self.types.maybe_resolve_non_ignored_ident(id)
}
pub fn maybe_resolve_path(&self, p_arg: &syn::Path, generics: Option<&GenericTypes>) -> Option<String> {
- let p = if let Some(gen_types) = generics {
- if let Some((_, synpath)) = gen_types.maybe_resolve_path(p_arg) {
- synpath
- } else { p_arg }
- } else { p_arg };
-
- if p.leading_colon.is_some() {
- Some(p.segments.iter().enumerate().map(|(idx, seg)| {
- format!("{}{}", if idx == 0 { "" } else { "::" }, seg.ident)
- }).collect())
- } else if let Some(id) = p.get_ident() {
- self.maybe_resolve_ident(id)
- } else {
- if p.segments.len() == 1 {
- let seg = p.segments.iter().next().unwrap();
- return self.maybe_resolve_ident(&seg.ident);
- }
- let mut seg_iter = p.segments.iter();
- let first_seg = seg_iter.next().unwrap();
- let remaining: String = seg_iter.map(|seg| {
- format!("::{}", seg.ident)
- }).collect();
- if let Some(imp) = self.imports.get(&first_seg.ident) {
- if remaining != "" {
- Some(imp.clone() + &remaining)
- } else {
- Some(imp.clone())
- }
- } else { None }
- }
+ self.types.maybe_resolve_path(p_arg, generics)
}
pub fn resolve_path(&self, p: &syn::Path, generics: Option<&GenericTypes>) -> String {
self.maybe_resolve_path(p, generics).unwrap()
} else if let Some(t) = self.crate_types.traits.get(&resolved_path) {
decl_lookup(w, &DeclType::Trait(t), &resolved_path, is_ref, is_mut);
} else if let Some(ident) = single_ident_generic_path_to_ident(&p.path) {
- if let Some(_) = self.imports.get(ident) {
- // crate_types lookup has to have succeeded:
- panic!("Failed to print inline conversion for {}", ident);
- } else if let Some(decl_type) = self.declared.get(ident) {
+ if let Some(decl_type) = self.types.maybe_resolve_declared(ident) {
decl_lookup(w, decl_type, &self.maybe_resolve_ident(ident).unwrap(), is_ref, is_mut);
} else { unimplemented!(); }
} else { unimplemented!(); }
if let Some((prefix, suffix)) = path_lookup(&resolved_path, is_ref) {
write!(w, "let mut local_{} = {}{}{};", ident, prefix, var, suffix).unwrap();
true
- } else if self.declared.get(ty_ident).is_some() {
+ } else if self.types.maybe_resolve_declared(ty_ident).is_some() {
false
} else { false }
} else { false }
// *** C Container Type Equivalent and alias Printing ***
// ******************************************************
- fn write_template_constructor<W: std::io::Write>(&mut self, w: &mut W, container_type: &str, mangled_container: &str, args: &Vec<&syn::Type>, generics: Option<&GenericTypes>, is_ref: bool) -> bool {
- if container_type == "Result" {
- assert_eq!(args.len(), 2);
- macro_rules! write_fn {
- ($call: expr) => { {
- writeln!(w, "#[no_mangle]\npub extern \"C\" fn {}_{}() -> {} {{", mangled_container, $call, mangled_container).unwrap();
- writeln!(w, "\t{}::CResultTempl::{}(0)\n}}\n", Self::container_templ_path(), $call).unwrap();
- } }
- }
- macro_rules! write_alias {
- ($call: expr, $item: expr) => { {
- write!(w, "#[no_mangle]\npub static {}_{}: extern \"C\" fn (", mangled_container, $call).unwrap();
- if let syn::Type::Path(syn::TypePath { path, .. }) = $item {
- let resolved = self.resolve_path(path, generics);
- if self.is_known_container(&resolved, is_ref) || self.is_transparent_container(&resolved, is_ref) {
- self.write_c_mangled_container_path_intern(w, Self::path_to_generic_args(path), generics,
- &format!("{}", single_ident_generic_path_to_ident(path).unwrap()), is_ref, false, false, false);
- } else {
- self.write_template_generics(w, &mut [$item].iter().map(|t| *t), generics, is_ref, true);
- }
- } else if let syn::Type::Tuple(syn::TypeTuple { elems, .. }) = $item {
- self.write_c_mangled_container_path_intern(w, elems.iter().collect(), generics,
- &format!("{}Tuple", elems.len()), is_ref, false, false, false);
- } else { unimplemented!(); }
- write!(w, ") -> {} =\n\t{}::CResultTempl::<", mangled_container, Self::container_templ_path()).unwrap();
- self.write_template_generics(w, &mut args.iter().map(|t| *t), generics, is_ref, true);
- writeln!(w, ">::{};\n", $call).unwrap();
- } }
- }
- match args[0] {
- syn::Type::Tuple(t) if t.elems.is_empty() => write_fn!("ok"),
- _ => write_alias!("ok", args[0]),
- }
- match args[1] {
- syn::Type::Tuple(t) if t.elems.is_empty() => write_fn!("err"),
- _ => write_alias!("err", args[1]),
- }
- } else if container_type.ends_with("Tuple") {
- write!(w, "#[no_mangle]\npub extern \"C\" fn {}_new(", mangled_container).unwrap();
- for (idx, gen) in args.iter().enumerate() {
- write!(w, "{}{}: ", if idx != 0 { ", " } else { "" }, ('a' as u8 + idx as u8) as char).unwrap();
- if !self.write_c_type_intern(w, gen, None, false, false, false) { return false; }
- }
- writeln!(w, ") -> {} {{", mangled_container).unwrap();
- write!(w, "\t{} {{ ", mangled_container).unwrap();
- for idx in 0..args.len() {
- write!(w, "{}, ", ('a' as u8 + idx as u8) as char).unwrap();
- }
- writeln!(w, "}}\n}}\n").unwrap();
- } else {
- writeln!(w, "").unwrap();
- }
- true
- }
-
- 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, in_crate: bool) {
+ 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
for (idx, t) in args.enumerate() {
if idx != 0 {
write!(w, ", ").unwrap();
}
- if let syn::Type::Tuple(tup) = t {
- if tup.elems.is_empty() {
- write!(w, "u8").unwrap();
- } else {
- write!(w, "{}::C{}TupleTempl<", Self::container_templ_path(), tup.elems.len()).unwrap();
- self.write_template_generics(w, &mut tup.elems.iter(), generics, is_ref, in_crate);
- write!(w, ">").unwrap();
- }
- } else if let syn::Type::Path(p_arg) = t {
- let resolved_generic = self.resolve_path(&p_arg.path, generics);
- if self.is_primitive(&resolved_generic) {
- write!(w, "{}", resolved_generic).unwrap();
- } else if let Some(c_type) = self.c_type_from_path(&resolved_generic, is_ref, false) {
- if self.is_known_container(&resolved_generic, is_ref) {
- write!(w, "{}::C{}Templ<", Self::container_templ_path(), single_ident_generic_path_to_ident(&p_arg.path).unwrap()).unwrap();
- assert_eq!(p_arg.path.segments.len(), 1);
- if let syn::PathArguments::AngleBracketed(args) = &p_arg.path.segments.iter().next().unwrap().arguments {
- self.write_template_generics(w, &mut args.args.iter().map(|gen|
- if let syn::GenericArgument::Type(t) = gen { t } else { unimplemented!() }),
- generics, is_ref, in_crate);
- } else { unimplemented!(); }
- write!(w, ">").unwrap();
- } else if resolved_generic == "Option" {
- if let syn::PathArguments::AngleBracketed(args) = &p_arg.path.segments.iter().next().unwrap().arguments {
- self.write_template_generics(w, &mut args.args.iter().map(|gen|
- if let syn::GenericArgument::Type(t) = gen { t } else { unimplemented!() }),
- generics, is_ref, in_crate);
- } else { unimplemented!(); }
- } else if in_crate {
- write!(w, "{}", c_type).unwrap();
- } else {
- self.write_rust_type(w, generics, &t);
- }
- } else {
- // If we just write out resolved_generic, it may mostly work, however for
- // original types which are generic, we need the template args. We could
- // figure them out and write them out, too, but its much easier to just
- // reference the native{} type alias which exists at least for opaque types.
- if in_crate {
- write!(w, "crate::{}", resolved_generic).unwrap();
- } else {
- let path_name: Vec<&str> = resolved_generic.rsplitn(2, "::").collect();
- if path_name.len() > 1 {
- write!(w, "crate::{}::native{}", path_name[1], path_name[0]).unwrap();
- } else {
- write!(w, "crate::native{}", path_name[0]).unwrap();
- }
- }
- }
- } else if let syn::Type::Reference(r_arg) = t {
+ if let syn::Type::Reference(r_arg) = t {
+ if !self.write_c_type_intern(w, &*r_arg.elem, generics, 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
+ // predefined type (currently only Transaction).
if let syn::Type::Path(p_arg) = &*r_arg.elem {
let resolved = self.resolve_path(&p_arg.path, generics);
- if self.crate_types.opaques.get(&resolved).is_some() {
- write!(w, "crate::{}", resolved).unwrap();
- } else {
- let cty = self.c_type_from_path(&resolved, true, true).expect("Template generics should be opaque or have a predefined mapping");
- w.write(cty.as_bytes()).unwrap();
- }
+ 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::Array(a_arg) = t {
- if let syn::Type::Path(p_arg) = &*a_arg.elem {
- let resolved = self.resolve_path(&p_arg.path, generics);
- assert!(self.is_primitive(&resolved));
- if let syn::Expr::Lit(syn::ExprLit { lit: syn::Lit::Int(len), .. }) = &a_arg.len {
- write!(w, "{}",
- self.c_type_from_path(&format!("[{}; {}]", resolved, len.base10_digits()), is_ref, false).unwrap()).unwrap();
- }
- }
+ } else {
+ if !self.write_c_type_intern(w, t, generics, 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() {
let mut created_container: Vec<u8> = Vec::new();
- write!(&mut created_container, "pub type {} = ", mangled_container).unwrap();
- write!(&mut created_container, "{}::C{}Templ<", Self::container_templ_path(), container_type).unwrap();
- self.write_template_generics(&mut created_container, &mut args.iter().map(|t| *t), generics, is_ref, true);
- writeln!(&mut created_container, ">;").unwrap();
+ if container_type == "Result" {
+ let mut a_ty: Vec<u8> = Vec::new();
+ if let syn::Type::Tuple(tup) = args.iter().next().unwrap() {
+ if tup.elems.is_empty() {
+ write!(&mut a_ty, "()").unwrap();
+ } else {
+ if !self.write_template_generics(&mut a_ty, &mut args.iter().map(|t| *t).take(1), generics, is_ref) { return false; }
+ }
+ } else {
+ if !self.write_template_generics(&mut a_ty, &mut args.iter().map(|t| *t).take(1), generics, is_ref) { return false; }
+ }
- write!(&mut created_container, "#[no_mangle]\npub static {}_free: extern \"C\" fn({}) = ", mangled_container, mangled_container).unwrap();
- write!(&mut created_container, "{}::C{}Templ_free::<", Self::container_templ_path(), container_type).unwrap();
- self.write_template_generics(&mut created_container, &mut args.iter().map(|t| *t), generics, is_ref, true);
- writeln!(&mut created_container, ">;").unwrap();
+ let mut b_ty: Vec<u8> = Vec::new();
+ if let syn::Type::Tuple(tup) = args.iter().skip(1).next().unwrap() {
+ if tup.elems.is_empty() {
+ write!(&mut b_ty, "()").unwrap();
+ } else {
+ if !self.write_template_generics(&mut b_ty, &mut args.iter().map(|t| *t).skip(1), generics, is_ref) { return false; }
+ }
+ } else {
+ if !self.write_template_generics(&mut b_ty, &mut args.iter().map(|t| *t).skip(1), generics, is_ref) { return false; }
+ }
- if !self.write_template_constructor(&mut created_container, container_type, &mangled_container, &args, generics, is_ref) {
- return false;
+ let ok_str = String::from_utf8(a_ty).unwrap();
+ let err_str = String::from_utf8(b_ty).unwrap();
+ 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);
+ }
+ } else if container_type == "Vec" {
+ 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_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);
+ }
+ } else if container_type.ends_with("Tuple") {
+ let mut tuple_args = Vec::new();
+ let mut is_clonable = true;
+ for arg in args.iter() {
+ let mut ty: Vec<u8> = Vec::new();
+ if !self.write_template_generics(&mut ty, &mut [arg].iter().map(|t| **t), generics, is_ref) { return false; }
+ let ty_str = String::from_utf8(ty).unwrap();
+ if !self.is_clonable(&ty_str) {
+ is_clonable = false;
+ }
+ tuple_args.push(ty_str);
+ }
+ 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);
+ }
+ } else {
+ unreachable!();
}
self.crate_types.templates_defined.insert(mangled_container.clone(), true);
generics, &subtype, is_ref, is_mut, ptr_for_ref, true);
}
} else {
- let id = &&$p_arg.path.segments.iter().rev().next().unwrap().ident;
+ let id = subtype.rsplitn(2, ':').next().unwrap(); // Get the "Base" name of the resolved type
write!(w, "{}", id).unwrap();
write!(mangled_type, "{}", id).unwrap();
if let Some(w2) = $extra_write as Option<&mut Vec<u8>> {
} else if let syn::Type::Path(p_arg) = arg {
write_path!(p_arg, None);
} else if let syn::Type::Reference(refty) = arg {
- if args.len() != 1 { return false; }
if let syn::Type::Path(p_arg) = &*refty.elem {
write_path!(p_arg, None);
} else if let syn::Type::Slice(_) = &*refty.elem {
// 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; }
projects / rust-lightning / blobdiff