summaryrefslogtreecommitdiffstats
path: root/src/librustdoc/json/conversions.rs
diff options
context:
space:
mode:
Diffstat (limited to 'src/librustdoc/json/conversions.rs')
-rw-r--r--src/librustdoc/json/conversions.rs798
1 files changed, 798 insertions, 0 deletions
diff --git a/src/librustdoc/json/conversions.rs b/src/librustdoc/json/conversions.rs
new file mode 100644
index 000000000..716a4c9ea
--- /dev/null
+++ b/src/librustdoc/json/conversions.rs
@@ -0,0 +1,798 @@
+//! These from impls are used to create the JSON types which get serialized. They're very close to
+//! the `clean` types but with some fields removed or stringified to simplify the output and not
+//! expose unstable compiler internals.
+
+#![allow(rustc::default_hash_types)]
+
+use std::convert::From;
+use std::fmt;
+
+use rustc_ast::ast;
+use rustc_hir::{def::CtorKind, def_id::DefId};
+use rustc_middle::ty::{self, TyCtxt};
+use rustc_span::{Pos, Symbol};
+use rustc_target::spec::abi::Abi as RustcAbi;
+
+use rustdoc_json_types::*;
+
+use crate::clean::utils::print_const_expr;
+use crate::clean::{self, ItemId};
+use crate::formats::item_type::ItemType;
+use crate::json::JsonRenderer;
+
+impl JsonRenderer<'_> {
+ pub(super) fn convert_item(&self, item: clean::Item) -> Option<Item> {
+ let deprecation = item.deprecation(self.tcx);
+ let links = self
+ .cache
+ .intra_doc_links
+ .get(&item.item_id)
+ .into_iter()
+ .flatten()
+ .map(|clean::ItemLink { link, did, .. }| {
+ (link.clone(), from_item_id((*did).into(), self.tcx))
+ })
+ .collect();
+ let docs = item.attrs.collapsed_doc_value();
+ let attrs = item
+ .attrs
+ .other_attrs
+ .iter()
+ .map(rustc_ast_pretty::pprust::attribute_to_string)
+ .collect();
+ let span = item.span(self.tcx);
+ let clean::Item { name, attrs: _, kind: _, visibility, item_id, cfg: _ } = item;
+ let inner = match *item.kind {
+ clean::KeywordItem => return None,
+ clean::StrippedItem(ref inner) => {
+ match &**inner {
+ // We document non-empty stripped modules as with `Module::is_stripped` set to
+ // `true`, to prevent contained items from being orphaned for downstream users,
+ // as JSON does no inlining.
+ clean::ModuleItem(m) if !m.items.is_empty() => from_clean_item(item, self.tcx),
+ _ => return None,
+ }
+ }
+ _ => from_clean_item(item, self.tcx),
+ };
+ Some(Item {
+ id: from_item_id_with_name(item_id, self.tcx, name),
+ crate_id: item_id.krate().as_u32(),
+ name: name.map(|sym| sym.to_string()),
+ span: self.convert_span(span),
+ visibility: self.convert_visibility(visibility),
+ docs,
+ attrs,
+ deprecation: deprecation.map(from_deprecation),
+ inner,
+ links,
+ })
+ }
+
+ fn convert_span(&self, span: clean::Span) -> Option<Span> {
+ match span.filename(self.sess()) {
+ rustc_span::FileName::Real(name) => {
+ if let Some(local_path) = name.into_local_path() {
+ let hi = span.hi(self.sess());
+ let lo = span.lo(self.sess());
+ Some(Span {
+ filename: local_path,
+ begin: (lo.line, lo.col.to_usize()),
+ end: (hi.line, hi.col.to_usize()),
+ })
+ } else {
+ None
+ }
+ }
+ _ => None,
+ }
+ }
+
+ fn convert_visibility(&self, v: clean::Visibility) -> Visibility {
+ use clean::Visibility::*;
+ match v {
+ Public => Visibility::Public,
+ Inherited => Visibility::Default,
+ Restricted(did) if did.is_crate_root() => Visibility::Crate,
+ Restricted(did) => Visibility::Restricted {
+ parent: from_item_id(did.into(), self.tcx),
+ path: self.tcx.def_path(did).to_string_no_crate_verbose(),
+ },
+ }
+ }
+}
+
+pub(crate) trait FromWithTcx<T> {
+ fn from_tcx(f: T, tcx: TyCtxt<'_>) -> Self;
+}
+
+pub(crate) trait IntoWithTcx<T> {
+ fn into_tcx(self, tcx: TyCtxt<'_>) -> T;
+}
+
+impl<T, U> IntoWithTcx<U> for T
+where
+ U: FromWithTcx<T>,
+{
+ fn into_tcx(self, tcx: TyCtxt<'_>) -> U {
+ U::from_tcx(self, tcx)
+ }
+}
+
+pub(crate) fn from_deprecation(deprecation: rustc_attr::Deprecation) -> Deprecation {
+ #[rustfmt::skip]
+ let rustc_attr::Deprecation { since, note, is_since_rustc_version: _, suggestion: _ } = deprecation;
+ Deprecation { since: since.map(|s| s.to_string()), note: note.map(|s| s.to_string()) }
+}
+
+impl FromWithTcx<clean::GenericArgs> for GenericArgs {
+ fn from_tcx(args: clean::GenericArgs, tcx: TyCtxt<'_>) -> Self {
+ use clean::GenericArgs::*;
+ match args {
+ AngleBracketed { args, bindings } => GenericArgs::AngleBracketed {
+ args: args.into_vec().into_iter().map(|a| a.into_tcx(tcx)).collect(),
+ bindings: bindings.into_iter().map(|a| a.into_tcx(tcx)).collect(),
+ },
+ Parenthesized { inputs, output } => GenericArgs::Parenthesized {
+ inputs: inputs.into_vec().into_iter().map(|a| a.into_tcx(tcx)).collect(),
+ output: output.map(|a| (*a).into_tcx(tcx)),
+ },
+ }
+ }
+}
+
+impl FromWithTcx<clean::GenericArg> for GenericArg {
+ fn from_tcx(arg: clean::GenericArg, tcx: TyCtxt<'_>) -> Self {
+ use clean::GenericArg::*;
+ match arg {
+ Lifetime(l) => GenericArg::Lifetime(l.0.to_string()),
+ Type(t) => GenericArg::Type(t.into_tcx(tcx)),
+ Const(box c) => GenericArg::Const(c.into_tcx(tcx)),
+ Infer => GenericArg::Infer,
+ }
+ }
+}
+
+impl FromWithTcx<clean::Constant> for Constant {
+ fn from_tcx(constant: clean::Constant, tcx: TyCtxt<'_>) -> Self {
+ let expr = constant.expr(tcx);
+ let value = constant.value(tcx);
+ let is_literal = constant.is_literal(tcx);
+ Constant { type_: constant.type_.into_tcx(tcx), expr, value, is_literal }
+ }
+}
+
+impl FromWithTcx<clean::TypeBinding> for TypeBinding {
+ fn from_tcx(binding: clean::TypeBinding, tcx: TyCtxt<'_>) -> Self {
+ TypeBinding {
+ name: binding.assoc.name.to_string(),
+ args: binding.assoc.args.into_tcx(tcx),
+ binding: binding.kind.into_tcx(tcx),
+ }
+ }
+}
+
+impl FromWithTcx<clean::TypeBindingKind> for TypeBindingKind {
+ fn from_tcx(kind: clean::TypeBindingKind, tcx: TyCtxt<'_>) -> Self {
+ use clean::TypeBindingKind::*;
+ match kind {
+ Equality { term } => TypeBindingKind::Equality(term.into_tcx(tcx)),
+ Constraint { bounds } => {
+ TypeBindingKind::Constraint(bounds.into_iter().map(|a| a.into_tcx(tcx)).collect())
+ }
+ }
+ }
+}
+
+/// It generates an ID as follows:
+///
+/// `CRATE_ID:ITEM_ID[:NAME_ID]` (if there is no name, NAME_ID is not generated).
+pub(crate) fn from_item_id(item_id: ItemId, tcx: TyCtxt<'_>) -> Id {
+ from_item_id_with_name(item_id, tcx, None)
+}
+
+// FIXME: this function (and appending the name at the end of the ID) should be removed when
+// reexports are not inlined anymore for json format. It should be done in #93518.
+pub(crate) fn from_item_id_with_name(item_id: ItemId, tcx: TyCtxt<'_>, name: Option<Symbol>) -> Id {
+ struct DisplayDefId<'a>(DefId, TyCtxt<'a>, Option<Symbol>);
+
+ impl<'a> fmt::Display for DisplayDefId<'a> {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ let name = match self.2 {
+ Some(name) => format!(":{}", name.as_u32()),
+ None => self
+ .1
+ .opt_item_name(self.0)
+ .map(|n| format!(":{}", n.as_u32()))
+ .unwrap_or_default(),
+ };
+ write!(f, "{}:{}{}", self.0.krate.as_u32(), u32::from(self.0.index), name)
+ }
+ }
+
+ match item_id {
+ ItemId::DefId(did) => Id(format!("{}", DisplayDefId(did, tcx, name))),
+ ItemId::Blanket { for_, impl_id } => {
+ Id(format!("b:{}-{}", DisplayDefId(impl_id, tcx, None), DisplayDefId(for_, tcx, name)))
+ }
+ ItemId::Auto { for_, trait_ } => {
+ Id(format!("a:{}-{}", DisplayDefId(trait_, tcx, None), DisplayDefId(for_, tcx, name)))
+ }
+ ItemId::Primitive(ty, krate) => Id(format!("p:{}:{}", krate.as_u32(), ty.as_sym())),
+ }
+}
+
+fn from_clean_item(item: clean::Item, tcx: TyCtxt<'_>) -> ItemEnum {
+ use clean::ItemKind::*;
+ let name = item.name;
+ let is_crate = item.is_crate();
+ let header = item.fn_header(tcx);
+
+ match *item.kind {
+ ModuleItem(m) => {
+ ItemEnum::Module(Module { is_crate, items: ids(m.items, tcx), is_stripped: false })
+ }
+ ImportItem(i) => ItemEnum::Import(i.into_tcx(tcx)),
+ StructItem(s) => ItemEnum::Struct(s.into_tcx(tcx)),
+ UnionItem(u) => ItemEnum::Union(u.into_tcx(tcx)),
+ StructFieldItem(f) => ItemEnum::StructField(f.into_tcx(tcx)),
+ EnumItem(e) => ItemEnum::Enum(e.into_tcx(tcx)),
+ VariantItem(v) => ItemEnum::Variant(v.into_tcx(tcx)),
+ FunctionItem(f) => ItemEnum::Function(from_function(f, header.unwrap(), tcx)),
+ ForeignFunctionItem(f) => ItemEnum::Function(from_function(f, header.unwrap(), tcx)),
+ TraitItem(t) => ItemEnum::Trait(t.into_tcx(tcx)),
+ TraitAliasItem(t) => ItemEnum::TraitAlias(t.into_tcx(tcx)),
+ MethodItem(m, _) => ItemEnum::Method(from_function_method(m, true, header.unwrap(), tcx)),
+ TyMethodItem(m) => ItemEnum::Method(from_function_method(m, false, header.unwrap(), tcx)),
+ ImplItem(i) => ItemEnum::Impl(i.into_tcx(tcx)),
+ StaticItem(s) => ItemEnum::Static(s.into_tcx(tcx)),
+ ForeignStaticItem(s) => ItemEnum::Static(s.into_tcx(tcx)),
+ ForeignTypeItem => ItemEnum::ForeignType,
+ TypedefItem(t) => ItemEnum::Typedef(t.into_tcx(tcx)),
+ OpaqueTyItem(t) => ItemEnum::OpaqueTy(t.into_tcx(tcx)),
+ ConstantItem(c) => ItemEnum::Constant(c.into_tcx(tcx)),
+ MacroItem(m) => ItemEnum::Macro(m.source),
+ ProcMacroItem(m) => ItemEnum::ProcMacro(m.into_tcx(tcx)),
+ PrimitiveItem(p) => ItemEnum::PrimitiveType(p.as_sym().to_string()),
+ TyAssocConstItem(ty) => ItemEnum::AssocConst { type_: ty.into_tcx(tcx), default: None },
+ AssocConstItem(ty, default) => {
+ ItemEnum::AssocConst { type_: ty.into_tcx(tcx), default: Some(default.expr(tcx)) }
+ }
+ TyAssocTypeItem(g, b) => ItemEnum::AssocType {
+ generics: (*g).into_tcx(tcx),
+ bounds: b.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ default: None,
+ },
+ AssocTypeItem(t, b) => ItemEnum::AssocType {
+ generics: t.generics.into_tcx(tcx),
+ bounds: b.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ default: Some(t.item_type.unwrap_or(t.type_).into_tcx(tcx)),
+ },
+ // `convert_item` early returns `None` for stripped items and keywords.
+ KeywordItem => unreachable!(),
+ StrippedItem(inner) => {
+ match *inner {
+ ModuleItem(m) => ItemEnum::Module(Module {
+ is_crate,
+ items: ids(m.items, tcx),
+ is_stripped: true,
+ }),
+ // `convert_item` early returns `None` for stripped items we're not including
+ _ => unreachable!(),
+ }
+ }
+ ExternCrateItem { ref src } => ItemEnum::ExternCrate {
+ name: name.as_ref().unwrap().to_string(),
+ rename: src.map(|x| x.to_string()),
+ },
+ }
+}
+
+impl FromWithTcx<clean::Struct> for Struct {
+ fn from_tcx(struct_: clean::Struct, tcx: TyCtxt<'_>) -> Self {
+ let fields_stripped = struct_.has_stripped_entries();
+ let clean::Struct { struct_type, generics, fields } = struct_;
+ Struct {
+ struct_type: from_ctor_kind(struct_type),
+ generics: generics.into_tcx(tcx),
+ fields_stripped,
+ fields: ids(fields, tcx),
+ impls: Vec::new(), // Added in JsonRenderer::item
+ }
+ }
+}
+
+impl FromWithTcx<clean::Union> for Union {
+ fn from_tcx(union_: clean::Union, tcx: TyCtxt<'_>) -> Self {
+ let fields_stripped = union_.has_stripped_entries();
+ let clean::Union { generics, fields } = union_;
+ Union {
+ generics: generics.into_tcx(tcx),
+ fields_stripped,
+ fields: ids(fields, tcx),
+ impls: Vec::new(), // Added in JsonRenderer::item
+ }
+ }
+}
+
+pub(crate) fn from_ctor_kind(struct_type: CtorKind) -> StructType {
+ match struct_type {
+ CtorKind::Fictive => StructType::Plain,
+ CtorKind::Fn => StructType::Tuple,
+ CtorKind::Const => StructType::Unit,
+ }
+}
+
+pub(crate) fn from_fn_header(header: &rustc_hir::FnHeader) -> Header {
+ Header {
+ async_: header.is_async(),
+ const_: header.is_const(),
+ unsafe_: header.is_unsafe(),
+ abi: convert_abi(header.abi),
+ }
+}
+
+fn convert_abi(a: RustcAbi) -> Abi {
+ match a {
+ RustcAbi::Rust => Abi::Rust,
+ RustcAbi::C { unwind } => Abi::C { unwind },
+ RustcAbi::Cdecl { unwind } => Abi::Cdecl { unwind },
+ RustcAbi::Stdcall { unwind } => Abi::Stdcall { unwind },
+ RustcAbi::Fastcall { unwind } => Abi::Fastcall { unwind },
+ RustcAbi::Aapcs { unwind } => Abi::Aapcs { unwind },
+ RustcAbi::Win64 { unwind } => Abi::Win64 { unwind },
+ RustcAbi::SysV64 { unwind } => Abi::SysV64 { unwind },
+ RustcAbi::System { unwind } => Abi::System { unwind },
+ _ => Abi::Other(a.to_string()),
+ }
+}
+
+impl FromWithTcx<clean::Generics> for Generics {
+ fn from_tcx(generics: clean::Generics, tcx: TyCtxt<'_>) -> Self {
+ Generics {
+ params: generics.params.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ where_predicates: generics
+ .where_predicates
+ .into_iter()
+ .map(|x| x.into_tcx(tcx))
+ .collect(),
+ }
+ }
+}
+
+impl FromWithTcx<clean::GenericParamDef> for GenericParamDef {
+ fn from_tcx(generic_param: clean::GenericParamDef, tcx: TyCtxt<'_>) -> Self {
+ GenericParamDef {
+ name: generic_param.name.to_string(),
+ kind: generic_param.kind.into_tcx(tcx),
+ }
+ }
+}
+
+impl FromWithTcx<clean::GenericParamDefKind> for GenericParamDefKind {
+ fn from_tcx(kind: clean::GenericParamDefKind, tcx: TyCtxt<'_>) -> Self {
+ use clean::GenericParamDefKind::*;
+ match kind {
+ Lifetime { outlives } => GenericParamDefKind::Lifetime {
+ outlives: outlives.into_iter().map(|lt| lt.0.to_string()).collect(),
+ },
+ Type { did: _, bounds, default, synthetic } => GenericParamDefKind::Type {
+ bounds: bounds.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ default: default.map(|x| (*x).into_tcx(tcx)),
+ synthetic,
+ },
+ Const { did: _, ty, default } => GenericParamDefKind::Const {
+ type_: (*ty).into_tcx(tcx),
+ default: default.map(|x| *x),
+ },
+ }
+ }
+}
+
+impl FromWithTcx<clean::WherePredicate> for WherePredicate {
+ fn from_tcx(predicate: clean::WherePredicate, tcx: TyCtxt<'_>) -> Self {
+ use clean::WherePredicate::*;
+ match predicate {
+ BoundPredicate { ty, bounds, bound_params } => WherePredicate::BoundPredicate {
+ type_: ty.into_tcx(tcx),
+ bounds: bounds.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ generic_params: bound_params
+ .into_iter()
+ .map(|x| GenericParamDef {
+ name: x.0.to_string(),
+ kind: GenericParamDefKind::Lifetime { outlives: vec![] },
+ })
+ .collect(),
+ },
+ RegionPredicate { lifetime, bounds } => WherePredicate::RegionPredicate {
+ lifetime: lifetime.0.to_string(),
+ bounds: bounds.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ },
+ EqPredicate { lhs, rhs } => {
+ WherePredicate::EqPredicate { lhs: lhs.into_tcx(tcx), rhs: rhs.into_tcx(tcx) }
+ }
+ }
+ }
+}
+
+impl FromWithTcx<clean::GenericBound> for GenericBound {
+ fn from_tcx(bound: clean::GenericBound, tcx: TyCtxt<'_>) -> Self {
+ use clean::GenericBound::*;
+ match bound {
+ TraitBound(clean::PolyTrait { trait_, generic_params }, modifier) => {
+ // FIXME: should `trait_` be a clean::Path equivalent in JSON?
+ let trait_ = clean::Type::Path { path: trait_ }.into_tcx(tcx);
+ GenericBound::TraitBound {
+ trait_,
+ generic_params: generic_params.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ modifier: from_trait_bound_modifier(modifier),
+ }
+ }
+ Outlives(lifetime) => GenericBound::Outlives(lifetime.0.to_string()),
+ }
+ }
+}
+
+pub(crate) fn from_trait_bound_modifier(
+ modifier: rustc_hir::TraitBoundModifier,
+) -> TraitBoundModifier {
+ use rustc_hir::TraitBoundModifier::*;
+ match modifier {
+ None => TraitBoundModifier::None,
+ Maybe => TraitBoundModifier::Maybe,
+ MaybeConst => TraitBoundModifier::MaybeConst,
+ }
+}
+
+impl FromWithTcx<clean::Type> for Type {
+ fn from_tcx(ty: clean::Type, tcx: TyCtxt<'_>) -> Self {
+ use clean::Type::{
+ Array, BareFunction, BorrowedRef, DynTrait, Generic, ImplTrait, Infer, Primitive,
+ QPath, RawPointer, Slice, Tuple,
+ };
+
+ match ty {
+ clean::Type::Path { path } => Type::ResolvedPath {
+ name: path.whole_name(),
+ id: from_item_id(path.def_id().into(), tcx),
+ args: path.segments.last().map(|args| Box::new(args.clone().args.into_tcx(tcx))),
+ param_names: Vec::new(),
+ },
+ DynTrait(mut bounds, lt) => {
+ let first_trait = bounds.remove(0).trait_;
+
+ Type::ResolvedPath {
+ name: first_trait.whole_name(),
+ id: from_item_id(first_trait.def_id().into(), tcx),
+ args: first_trait
+ .segments
+ .last()
+ .map(|args| Box::new(args.clone().args.into_tcx(tcx))),
+ param_names: bounds
+ .into_iter()
+ .map(|t| {
+ clean::GenericBound::TraitBound(t, rustc_hir::TraitBoundModifier::None)
+ })
+ .chain(lt.map(clean::GenericBound::Outlives))
+ .map(|bound| bound.into_tcx(tcx))
+ .collect(),
+ }
+ }
+ Generic(s) => Type::Generic(s.to_string()),
+ Primitive(p) => Type::Primitive(p.as_sym().to_string()),
+ BareFunction(f) => Type::FunctionPointer(Box::new((*f).into_tcx(tcx))),
+ Tuple(t) => Type::Tuple(t.into_iter().map(|x| x.into_tcx(tcx)).collect()),
+ Slice(t) => Type::Slice(Box::new((*t).into_tcx(tcx))),
+ Array(t, s) => Type::Array { type_: Box::new((*t).into_tcx(tcx)), len: s },
+ ImplTrait(g) => Type::ImplTrait(g.into_iter().map(|x| x.into_tcx(tcx)).collect()),
+ Infer => Type::Infer,
+ RawPointer(mutability, type_) => Type::RawPointer {
+ mutable: mutability == ast::Mutability::Mut,
+ type_: Box::new((*type_).into_tcx(tcx)),
+ },
+ BorrowedRef { lifetime, mutability, type_ } => Type::BorrowedRef {
+ lifetime: lifetime.map(|l| l.0.to_string()),
+ mutable: mutability == ast::Mutability::Mut,
+ type_: Box::new((*type_).into_tcx(tcx)),
+ },
+ QPath { assoc, self_type, trait_, .. } => {
+ // FIXME: should `trait_` be a clean::Path equivalent in JSON?
+ let trait_ = clean::Type::Path { path: trait_ }.into_tcx(tcx);
+ Type::QualifiedPath {
+ name: assoc.name.to_string(),
+ args: Box::new(assoc.args.clone().into_tcx(tcx)),
+ self_type: Box::new((*self_type).into_tcx(tcx)),
+ trait_: Box::new(trait_),
+ }
+ }
+ }
+ }
+}
+
+impl FromWithTcx<clean::Term> for Term {
+ fn from_tcx(term: clean::Term, tcx: TyCtxt<'_>) -> Term {
+ match term {
+ clean::Term::Type(ty) => Term::Type(FromWithTcx::from_tcx(ty, tcx)),
+ clean::Term::Constant(c) => Term::Constant(FromWithTcx::from_tcx(c, tcx)),
+ }
+ }
+}
+
+impl FromWithTcx<clean::BareFunctionDecl> for FunctionPointer {
+ fn from_tcx(bare_decl: clean::BareFunctionDecl, tcx: TyCtxt<'_>) -> Self {
+ let clean::BareFunctionDecl { unsafety, generic_params, decl, abi } = bare_decl;
+ FunctionPointer {
+ header: Header {
+ unsafe_: matches!(unsafety, rustc_hir::Unsafety::Unsafe),
+ const_: false,
+ async_: false,
+ abi: convert_abi(abi),
+ },
+ generic_params: generic_params.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ decl: decl.into_tcx(tcx),
+ }
+ }
+}
+
+impl FromWithTcx<clean::FnDecl> for FnDecl {
+ fn from_tcx(decl: clean::FnDecl, tcx: TyCtxt<'_>) -> Self {
+ let clean::FnDecl { inputs, output, c_variadic } = decl;
+ FnDecl {
+ inputs: inputs
+ .values
+ .into_iter()
+ .map(|arg| (arg.name.to_string(), arg.type_.into_tcx(tcx)))
+ .collect(),
+ output: match output {
+ clean::FnRetTy::Return(t) => Some(t.into_tcx(tcx)),
+ clean::FnRetTy::DefaultReturn => None,
+ },
+ c_variadic,
+ }
+ }
+}
+
+impl FromWithTcx<clean::Trait> for Trait {
+ fn from_tcx(trait_: clean::Trait, tcx: TyCtxt<'_>) -> Self {
+ let is_auto = trait_.is_auto(tcx);
+ let is_unsafe = trait_.unsafety(tcx) == rustc_hir::Unsafety::Unsafe;
+ let clean::Trait { items, generics, bounds, .. } = trait_;
+ Trait {
+ is_auto,
+ is_unsafe,
+ items: ids(items, tcx),
+ generics: generics.into_tcx(tcx),
+ bounds: bounds.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ implementations: Vec::new(), // Added in JsonRenderer::item
+ }
+ }
+}
+
+impl FromWithTcx<Box<clean::Impl>> for Impl {
+ fn from_tcx(impl_: Box<clean::Impl>, tcx: TyCtxt<'_>) -> Self {
+ let provided_trait_methods = impl_.provided_trait_methods(tcx);
+ let clean::Impl { unsafety, generics, trait_, for_, items, polarity, kind } = *impl_;
+ // FIXME: should `trait_` be a clean::Path equivalent in JSON?
+ let trait_ = trait_.map(|path| clean::Type::Path { path }.into_tcx(tcx));
+ // FIXME: use something like ImplKind in JSON?
+ let (synthetic, blanket_impl) = match kind {
+ clean::ImplKind::Normal | clean::ImplKind::FakeVaradic => (false, None),
+ clean::ImplKind::Auto => (true, None),
+ clean::ImplKind::Blanket(ty) => (false, Some(*ty)),
+ };
+ let negative_polarity = match polarity {
+ ty::ImplPolarity::Positive | ty::ImplPolarity::Reservation => false,
+ ty::ImplPolarity::Negative => true,
+ };
+ Impl {
+ is_unsafe: unsafety == rustc_hir::Unsafety::Unsafe,
+ generics: generics.into_tcx(tcx),
+ provided_trait_methods: provided_trait_methods
+ .into_iter()
+ .map(|x| x.to_string())
+ .collect(),
+ trait_,
+ for_: for_.into_tcx(tcx),
+ items: ids(items, tcx),
+ negative: negative_polarity,
+ synthetic,
+ blanket_impl: blanket_impl.map(|x| x.into_tcx(tcx)),
+ }
+ }
+}
+
+pub(crate) fn from_function(
+ function: Box<clean::Function>,
+ header: rustc_hir::FnHeader,
+ tcx: TyCtxt<'_>,
+) -> Function {
+ let clean::Function { decl, generics } = *function;
+ Function {
+ decl: decl.into_tcx(tcx),
+ generics: generics.into_tcx(tcx),
+ header: from_fn_header(&header),
+ }
+}
+
+pub(crate) fn from_function_method(
+ function: Box<clean::Function>,
+ has_body: bool,
+ header: rustc_hir::FnHeader,
+ tcx: TyCtxt<'_>,
+) -> Method {
+ let clean::Function { decl, generics } = *function;
+ Method {
+ decl: decl.into_tcx(tcx),
+ generics: generics.into_tcx(tcx),
+ header: from_fn_header(&header),
+ has_body,
+ }
+}
+
+impl FromWithTcx<clean::Enum> for Enum {
+ fn from_tcx(enum_: clean::Enum, tcx: TyCtxt<'_>) -> Self {
+ let variants_stripped = enum_.has_stripped_entries();
+ let clean::Enum { variants, generics } = enum_;
+ Enum {
+ generics: generics.into_tcx(tcx),
+ variants_stripped,
+ variants: ids(variants, tcx),
+ impls: Vec::new(), // Added in JsonRenderer::item
+ }
+ }
+}
+
+impl FromWithTcx<clean::VariantStruct> for Struct {
+ fn from_tcx(struct_: clean::VariantStruct, tcx: TyCtxt<'_>) -> Self {
+ let fields_stripped = struct_.has_stripped_entries();
+ let clean::VariantStruct { struct_type, fields } = struct_;
+ Struct {
+ struct_type: from_ctor_kind(struct_type),
+ generics: Generics { params: vec![], where_predicates: vec![] },
+ fields_stripped,
+ fields: ids(fields, tcx),
+ impls: Vec::new(),
+ }
+ }
+}
+
+impl FromWithTcx<clean::Variant> for Variant {
+ fn from_tcx(variant: clean::Variant, tcx: TyCtxt<'_>) -> Self {
+ use clean::Variant::*;
+ match variant {
+ CLike => Variant::Plain,
+ Tuple(fields) => Variant::Tuple(
+ fields
+ .into_iter()
+ .map(|f| {
+ if let clean::StructFieldItem(ty) = *f.kind {
+ ty.into_tcx(tcx)
+ } else {
+ unreachable!()
+ }
+ })
+ .collect(),
+ ),
+ Struct(s) => Variant::Struct(ids(s.fields, tcx)),
+ }
+ }
+}
+
+impl FromWithTcx<clean::Import> for Import {
+ fn from_tcx(import: clean::Import, tcx: TyCtxt<'_>) -> Self {
+ use clean::ImportKind::*;
+ match import.kind {
+ Simple(s) => Import {
+ source: import.source.path.whole_name(),
+ name: s.to_string(),
+ id: import.source.did.map(ItemId::from).map(|i| from_item_id(i, tcx)),
+ glob: false,
+ },
+ Glob => Import {
+ source: import.source.path.whole_name(),
+ name: import
+ .source
+ .path
+ .last_opt()
+ .unwrap_or_else(|| Symbol::intern("*"))
+ .to_string(),
+ id: import.source.did.map(ItemId::from).map(|i| from_item_id(i, tcx)),
+ glob: true,
+ },
+ }
+ }
+}
+
+impl FromWithTcx<clean::ProcMacro> for ProcMacro {
+ fn from_tcx(mac: clean::ProcMacro, _tcx: TyCtxt<'_>) -> Self {
+ ProcMacro {
+ kind: from_macro_kind(mac.kind),
+ helpers: mac.helpers.iter().map(|x| x.to_string()).collect(),
+ }
+ }
+}
+
+pub(crate) fn from_macro_kind(kind: rustc_span::hygiene::MacroKind) -> MacroKind {
+ use rustc_span::hygiene::MacroKind::*;
+ match kind {
+ Bang => MacroKind::Bang,
+ Attr => MacroKind::Attr,
+ Derive => MacroKind::Derive,
+ }
+}
+
+impl FromWithTcx<Box<clean::Typedef>> for Typedef {
+ fn from_tcx(typedef: Box<clean::Typedef>, tcx: TyCtxt<'_>) -> Self {
+ let clean::Typedef { type_, generics, item_type: _ } = *typedef;
+ Typedef { type_: type_.into_tcx(tcx), generics: generics.into_tcx(tcx) }
+ }
+}
+
+impl FromWithTcx<clean::OpaqueTy> for OpaqueTy {
+ fn from_tcx(opaque: clean::OpaqueTy, tcx: TyCtxt<'_>) -> Self {
+ OpaqueTy {
+ bounds: opaque.bounds.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ generics: opaque.generics.into_tcx(tcx),
+ }
+ }
+}
+
+impl FromWithTcx<clean::Static> for Static {
+ fn from_tcx(stat: clean::Static, tcx: TyCtxt<'_>) -> Self {
+ Static {
+ type_: stat.type_.into_tcx(tcx),
+ mutable: stat.mutability == ast::Mutability::Mut,
+ expr: stat.expr.map(|e| print_const_expr(tcx, e)).unwrap_or_default(),
+ }
+ }
+}
+
+impl FromWithTcx<clean::TraitAlias> for TraitAlias {
+ fn from_tcx(alias: clean::TraitAlias, tcx: TyCtxt<'_>) -> Self {
+ TraitAlias {
+ generics: alias.generics.into_tcx(tcx),
+ params: alias.bounds.into_iter().map(|x| x.into_tcx(tcx)).collect(),
+ }
+ }
+}
+
+impl FromWithTcx<ItemType> for ItemKind {
+ fn from_tcx(kind: ItemType, _tcx: TyCtxt<'_>) -> Self {
+ use ItemType::*;
+ match kind {
+ Module => ItemKind::Module,
+ ExternCrate => ItemKind::ExternCrate,
+ Import => ItemKind::Import,
+ Struct => ItemKind::Struct,
+ Union => ItemKind::Union,
+ Enum => ItemKind::Enum,
+ Function => ItemKind::Function,
+ Typedef => ItemKind::Typedef,
+ OpaqueTy => ItemKind::OpaqueTy,
+ Static => ItemKind::Static,
+ Constant => ItemKind::Constant,
+ Trait => ItemKind::Trait,
+ Impl => ItemKind::Impl,
+ TyMethod | Method => ItemKind::Method,
+ StructField => ItemKind::StructField,
+ Variant => ItemKind::Variant,
+ Macro => ItemKind::Macro,
+ Primitive => ItemKind::Primitive,
+ AssocConst => ItemKind::AssocConst,
+ AssocType => ItemKind::AssocType,
+ ForeignType => ItemKind::ForeignType,
+ Keyword => ItemKind::Keyword,
+ TraitAlias => ItemKind::TraitAlias,
+ ProcAttribute => ItemKind::ProcAttribute,
+ ProcDerive => ItemKind::ProcDerive,
+ }
+ }
+}
+
+fn ids(items: impl IntoIterator<Item = clean::Item>, tcx: TyCtxt<'_>) -> Vec<Id> {
+ items
+ .into_iter()
+ .filter(|x| !x.is_stripped() && !x.is_keyword())
+ .map(|i| from_item_id_with_name(i.item_id, tcx, i.name))
+ .collect()
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 12:52:39 +0000