#![allow(rustc::default_hash_types)]
use rustc_abi::ExternAbi;
use rustc_ast::ast;
use rustc_attr_parsing::DeprecatedSince;
use rustc_hir::def::{CtorKind, DefKind};
use rustc_hir::def_id::DefId;
use rustc_metadata::rendered_const;
use rustc_middle::{bug, ty};
use rustc_span::{Pos, Symbol, sym};
use rustdoc_json_types::*;
use super::FullItemId;
use crate::clean::{self, ItemId};
use crate::formats::FormatRenderer;
use crate::formats::item_type::ItemType;
use crate::json::JsonRenderer;
use crate::passes::collect_intra_doc_links::UrlFragment;
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, page_id, fragment, .. }| {
let id = match fragment {
Some(UrlFragment::Item(frag_id)) => *frag_id,
Some(UrlFragment::UserWritten(_)) | None => *page_id,
};
(String::from(&**link), self.id_from_item_default(id.into()))
})
.collect();
let docs = item.opt_doc_value();
let attrs = item.attributes(self.tcx, self.cache(), true);
let span = item.span(self.tcx);
let visibility = item.visibility(self.tcx);
let clean::Item { name, item_id, .. } = item;
let id = self.id_from_item(&item);
let inner = match item.kind {
clean::KeywordItem => return None,
clean::StrippedItem(ref inner) => {
match &**inner {
clean::ModuleItem(_)
if self.imported_items.contains(&item_id.expect_def_id()) =>
{
from_clean_item(item, self)
}
_ => return None,
}
}
_ => from_clean_item(item, self),
};
Some(Item {
id,
crate_id: item_id.krate().as_u32(),
name: name.map(|sym| sym.to_string()),
span: span.and_then(|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: Option<ty::Visibility<DefId>>) -> Visibility {
match v {
None => Visibility::Default,
Some(ty::Visibility::Public) => Visibility::Public,
Some(ty::Visibility::Restricted(did)) if did.is_crate_root() => Visibility::Crate,
Some(ty::Visibility::Restricted(did)) => Visibility::Restricted {
parent: self.id_from_item_default(did.into()),
path: self.tcx.def_path(did).to_string_no_crate_verbose(),
},
}
}
pub(crate) fn id_from_item_default(&self, item_id: ItemId) -> Id {
self.id_from_item_inner(item_id, None, None)
}
pub(crate) fn id_from_item_inner(
&self,
item_id: ItemId,
name: Option<Symbol>,
extra: Option<Id>,
) -> Id {
let make_part = |def_id: DefId, name: Option<Symbol>, extra: Option<Id>| {
let name = match name {
Some(name) => Some(name),
None => {
if matches!(self.tcx.def_kind(def_id), DefKind::Mod)
&& let Some(prim) = self
.tcx
.get_attrs(def_id, sym::rustc_doc_primitive)
.find_map(|attr| attr.value_str())
{
Some(prim)
} else {
self.tcx.opt_item_name(def_id)
}
}
};
FullItemId { def_id, name, extra }
};
let key = match item_id {
ItemId::DefId(did) => (make_part(did, name, extra), None),
ItemId::Blanket { for_, impl_id } => {
(make_part(impl_id, None, None), Some(make_part(for_, name, extra)))
}
ItemId::Auto { for_, trait_ } => {
(make_part(trait_, None, None), Some(make_part(for_, name, extra)))
}
};
let mut interner = self.id_interner.borrow_mut();
let len = interner.len();
*interner
.entry(key)
.or_insert_with(|| Id(len.try_into().expect("too many items in a crate")))
}
pub(crate) fn id_from_item(&self, item: &clean::Item) -> Id {
match item.kind {
clean::ItemKind::ImportItem(ref import) => {
let extra =
import.source.did.map(ItemId::from).map(|i| self.id_from_item_default(i));
self.id_from_item_inner(item.item_id, item.name, extra)
}
_ => self.id_from_item_inner(item.item_id, item.name, None),
}
}
fn ids(&self, items: impl IntoIterator<Item = clean::Item>) -> Vec<Id> {
items
.into_iter()
.filter(|x| !x.is_stripped() && !x.is_keyword())
.map(|i| self.id_from_item(&i))
.collect()
}
fn ids_keeping_stripped(
&self,
items: impl IntoIterator<Item = clean::Item>,
) -> Vec<Option<Id>> {
items
.into_iter()
.map(|i| (!i.is_stripped() && !i.is_keyword()).then(|| self.id_from_item(&i)))
.collect()
}
}
pub(crate) trait FromClean<T> {
fn from_clean(f: T, renderer: &JsonRenderer<'_>) -> Self;
}
pub(crate) trait IntoJson<T> {
fn into_json(self, renderer: &JsonRenderer<'_>) -> T;
}
impl<T, U> IntoJson<U> for T
where
U: FromClean<T>,
{
fn into_json(self, renderer: &JsonRenderer<'_>) -> U {
U::from_clean(self, renderer)
}
}
impl<I, T, U> FromClean<I> for Vec<U>
where
I: IntoIterator<Item = T>,
U: FromClean<T>,
{
fn from_clean(f: I, renderer: &JsonRenderer<'_>) -> Vec<U> {
f.into_iter().map(|x| x.into_json(renderer)).collect()
}
}
pub(crate) fn from_deprecation(deprecation: rustc_attr_parsing::Deprecation) -> Deprecation {
let rustc_attr_parsing::Deprecation { since, note, suggestion: _ } = deprecation;
let since = match since {
DeprecatedSince::RustcVersion(version) => Some(version.to_string()),
DeprecatedSince::Future => Some("TBD".to_owned()),
DeprecatedSince::NonStandard(since) => Some(since.to_string()),
DeprecatedSince::Unspecified | DeprecatedSince::Err => None,
};
Deprecation { since, note: note.map(|s| s.to_string()) }
}
impl FromClean<clean::GenericArgs> for GenericArgs {
fn from_clean(args: clean::GenericArgs, renderer: &JsonRenderer<'_>) -> Self {
use clean::GenericArgs::*;
match args {
AngleBracketed { args, constraints } => GenericArgs::AngleBracketed {
args: args.into_vec().into_json(renderer),
constraints: constraints.into_json(renderer),
},
Parenthesized { inputs, output } => GenericArgs::Parenthesized {
inputs: inputs.into_vec().into_json(renderer),
output: output.map(|a| (*a).into_json(renderer)),
},
}
}
}
impl FromClean<clean::GenericArg> for GenericArg {
fn from_clean(arg: clean::GenericArg, renderer: &JsonRenderer<'_>) -> Self {
use clean::GenericArg::*;
match arg {
Lifetime(l) => GenericArg::Lifetime(convert_lifetime(l)),
Type(t) => GenericArg::Type(t.into_json(renderer)),
Const(box c) => GenericArg::Const(c.into_json(renderer)),
Infer => GenericArg::Infer,
}
}
}
impl FromClean<clean::Constant> for Constant {
fn from_clean(constant: clean::Constant, renderer: &JsonRenderer<'_>) -> Self {
let tcx = renderer.tcx;
let expr = constant.expr(tcx);
let value = constant.value(tcx);
let is_literal = constant.is_literal(tcx);
Constant { expr, value, is_literal }
}
}
impl FromClean<clean::ConstantKind> for Constant {
fn from_clean(constant: clean::ConstantKind, renderer: &JsonRenderer<'_>) -> Self {
let tcx = renderer.tcx;
let expr = constant.expr(tcx);
let value = constant.value(tcx);
let is_literal = constant.is_literal(tcx);
Constant { expr, value, is_literal }
}
}
impl FromClean<clean::AssocItemConstraint> for AssocItemConstraint {
fn from_clean(constraint: clean::AssocItemConstraint, renderer: &JsonRenderer<'_>) -> Self {
AssocItemConstraint {
name: constraint.assoc.name.to_string(),
args: constraint.assoc.args.into_json(renderer),
binding: constraint.kind.into_json(renderer),
}
}
}
impl FromClean<clean::AssocItemConstraintKind> for AssocItemConstraintKind {
fn from_clean(kind: clean::AssocItemConstraintKind, renderer: &JsonRenderer<'_>) -> Self {
use clean::AssocItemConstraintKind::*;
match kind {
Equality { term } => AssocItemConstraintKind::Equality(term.into_json(renderer)),
Bound { bounds } => AssocItemConstraintKind::Constraint(bounds.into_json(renderer)),
}
}
}
fn from_clean_item(item: clean::Item, renderer: &JsonRenderer<'_>) -> ItemEnum {
use clean::ItemKind::*;
let name = item.name;
let is_crate = item.is_crate();
let header = item.fn_header(renderer.tcx);
match item.inner.kind {
ModuleItem(m) => {
ItemEnum::Module(Module { is_crate, items: renderer.ids(m.items), is_stripped: false })
}
ImportItem(i) => ItemEnum::Use(i.into_json(renderer)),
StructItem(s) => ItemEnum::Struct(s.into_json(renderer)),
UnionItem(u) => ItemEnum::Union(u.into_json(renderer)),
StructFieldItem(f) => ItemEnum::StructField(f.into_json(renderer)),
EnumItem(e) => ItemEnum::Enum(e.into_json(renderer)),
VariantItem(v) => ItemEnum::Variant(v.into_json(renderer)),
FunctionItem(f) => ItemEnum::Function(from_function(f, true, header.unwrap(), renderer)),
ForeignFunctionItem(f, _) => {
ItemEnum::Function(from_function(f, false, header.unwrap(), renderer))
}
TraitItem(t) => ItemEnum::Trait((*t).into_json(renderer)),
TraitAliasItem(t) => ItemEnum::TraitAlias(t.into_json(renderer)),
MethodItem(m, _) => ItemEnum::Function(from_function(m, true, header.unwrap(), renderer)),
RequiredMethodItem(m) => {
ItemEnum::Function(from_function(m, false, header.unwrap(), renderer))
}
ImplItem(i) => ItemEnum::Impl((*i).into_json(renderer)),
StaticItem(s) => ItemEnum::Static(convert_static(s, rustc_hir::Safety::Safe, renderer)),
ForeignStaticItem(s, safety) => ItemEnum::Static(convert_static(s, safety, renderer)),
ForeignTypeItem => ItemEnum::ExternType,
TypeAliasItem(t) => ItemEnum::TypeAlias(t.into_json(renderer)),
ConstantItem(ci) => ItemEnum::Constant {
type_: ci.type_.into_json(renderer),
const_: ci.kind.into_json(renderer),
},
MacroItem(m) => ItemEnum::Macro(m.source),
ProcMacroItem(m) => ItemEnum::ProcMacro(m.into_json(renderer)),
PrimitiveItem(p) => {
ItemEnum::Primitive(Primitive {
name: p.as_sym().to_string(),
impls: Vec::new(), })
}
RequiredAssocConstItem(_generics, ty) => {
ItemEnum::AssocConst { type_: (*ty).into_json(renderer), value: None }
}
ProvidedAssocConstItem(ci) | ImplAssocConstItem(ci) => ItemEnum::AssocConst {
type_: ci.type_.into_json(renderer),
value: Some(ci.kind.expr(renderer.tcx)),
},
RequiredAssocTypeItem(g, b) => ItemEnum::AssocType {
generics: g.into_json(renderer),
bounds: b.into_json(renderer),
type_: None,
},
AssocTypeItem(t, b) => ItemEnum::AssocType {
generics: t.generics.into_json(renderer),
bounds: b.into_json(renderer),
type_: Some(t.item_type.unwrap_or(t.type_).into_json(renderer)),
},
KeywordItem => unreachable!(),
StrippedItem(inner) => {
match *inner {
ModuleItem(m) => ItemEnum::Module(Module {
is_crate,
items: renderer.ids(m.items),
is_stripped: true,
}),
_ => unreachable!(),
}
}
ExternCrateItem { ref src } => ItemEnum::ExternCrate {
name: name.as_ref().unwrap().to_string(),
rename: src.map(|x| x.to_string()),
},
}
}
impl FromClean<clean::Struct> for Struct {
fn from_clean(struct_: clean::Struct, renderer: &JsonRenderer<'_>) -> Self {
let has_stripped_fields = struct_.has_stripped_entries();
let clean::Struct { ctor_kind, generics, fields } = struct_;
let kind = match ctor_kind {
Some(CtorKind::Fn) => StructKind::Tuple(renderer.ids_keeping_stripped(fields)),
Some(CtorKind::Const) => {
assert!(fields.is_empty());
StructKind::Unit
}
None => StructKind::Plain { fields: renderer.ids(fields), has_stripped_fields },
};
Struct {
kind,
generics: generics.into_json(renderer),
impls: Vec::new(), }
}
}
impl FromClean<clean::Union> for Union {
fn from_clean(union_: clean::Union, renderer: &JsonRenderer<'_>) -> Self {
let has_stripped_fields = union_.has_stripped_entries();
let clean::Union { generics, fields } = union_;
Union {
generics: generics.into_json(renderer),
has_stripped_fields,
fields: renderer.ids(fields),
impls: Vec::new(), }
}
}
pub(crate) fn from_fn_header(header: &rustc_hir::FnHeader) -> FunctionHeader {
FunctionHeader {
is_async: header.is_async(),
is_const: header.is_const(),
is_unsafe: header.is_unsafe(),
abi: convert_abi(header.abi),
}
}
fn convert_abi(a: ExternAbi) -> Abi {
match a {
ExternAbi::Rust => Abi::Rust,
ExternAbi::C { unwind } => Abi::C { unwind },
ExternAbi::Cdecl { unwind } => Abi::Cdecl { unwind },
ExternAbi::Stdcall { unwind } => Abi::Stdcall { unwind },
ExternAbi::Fastcall { unwind } => Abi::Fastcall { unwind },
ExternAbi::Aapcs { unwind } => Abi::Aapcs { unwind },
ExternAbi::Win64 { unwind } => Abi::Win64 { unwind },
ExternAbi::SysV64 { unwind } => Abi::SysV64 { unwind },
ExternAbi::System { unwind } => Abi::System { unwind },
_ => Abi::Other(a.to_string()),
}
}
fn convert_lifetime(l: clean::Lifetime) -> String {
l.0.to_string()
}
impl FromClean<clean::Generics> for Generics {
fn from_clean(generics: clean::Generics, renderer: &JsonRenderer<'_>) -> Self {
Generics {
params: generics.params.into_json(renderer),
where_predicates: generics.where_predicates.into_json(renderer),
}
}
}
impl FromClean<clean::GenericParamDef> for GenericParamDef {
fn from_clean(generic_param: clean::GenericParamDef, renderer: &JsonRenderer<'_>) -> Self {
GenericParamDef {
name: generic_param.name.to_string(),
kind: generic_param.kind.into_json(renderer),
}
}
}
impl FromClean<clean::GenericParamDefKind> for GenericParamDefKind {
fn from_clean(kind: clean::GenericParamDefKind, renderer: &JsonRenderer<'_>) -> Self {
use clean::GenericParamDefKind::*;
match kind {
Lifetime { outlives } => GenericParamDefKind::Lifetime {
outlives: outlives.into_iter().map(convert_lifetime).collect(),
},
Type { bounds, default, synthetic } => GenericParamDefKind::Type {
bounds: bounds.into_json(renderer),
default: default.map(|x| (*x).into_json(renderer)),
is_synthetic: synthetic,
},
Const { ty, default, synthetic: _ } => GenericParamDefKind::Const {
type_: (*ty).into_json(renderer),
default: default.map(|x| *x),
},
}
}
}
impl FromClean<clean::WherePredicate> for WherePredicate {
fn from_clean(predicate: clean::WherePredicate, renderer: &JsonRenderer<'_>) -> Self {
use clean::WherePredicate::*;
match predicate {
BoundPredicate { ty, bounds, bound_params } => WherePredicate::BoundPredicate {
type_: ty.into_json(renderer),
bounds: bounds.into_json(renderer),
generic_params: bound_params
.into_iter()
.map(|x| {
let name = x.name.to_string();
let kind = match x.kind {
clean::GenericParamDefKind::Lifetime { outlives } => {
GenericParamDefKind::Lifetime {
outlives: outlives.iter().map(|lt| lt.0.to_string()).collect(),
}
}
clean::GenericParamDefKind::Type { bounds, default, synthetic } => {
GenericParamDefKind::Type {
bounds: bounds
.into_iter()
.map(|bound| bound.into_json(renderer))
.collect(),
default: default.map(|ty| (*ty).into_json(renderer)),
is_synthetic: synthetic,
}
}
clean::GenericParamDefKind::Const { ty, default, synthetic: _ } => {
GenericParamDefKind::Const {
type_: (*ty).into_json(renderer),
default: default.map(|d| *d),
}
}
};
GenericParamDef { name, kind }
})
.collect(),
},
RegionPredicate { lifetime, bounds } => WherePredicate::LifetimePredicate {
lifetime: convert_lifetime(lifetime),
outlives: bounds
.iter()
.map(|bound| match bound {
clean::GenericBound::Outlives(lt) => convert_lifetime(*lt),
_ => bug!("found non-outlives-bound on lifetime predicate"),
})
.collect(),
},
EqPredicate { lhs, rhs } => WherePredicate::EqPredicate {
lhs: lhs.into_json(renderer),
rhs: rhs.into_json(renderer),
},
}
}
}
impl FromClean<clean::GenericBound> for GenericBound {
fn from_clean(bound: clean::GenericBound, renderer: &JsonRenderer<'_>) -> Self {
use clean::GenericBound::*;
match bound {
TraitBound(clean::PolyTrait { trait_, generic_params }, modifier) => {
GenericBound::TraitBound {
trait_: trait_.into_json(renderer),
generic_params: generic_params.into_json(renderer),
modifier: from_trait_bound_modifier(modifier),
}
}
Outlives(lifetime) => GenericBound::Outlives(convert_lifetime(lifetime)),
Use(args) => GenericBound::Use(args.into_iter().map(|arg| arg.to_string()).collect()),
}
}
}
pub(crate) fn from_trait_bound_modifier(
modifiers: rustc_hir::TraitBoundModifiers,
) -> TraitBoundModifier {
use rustc_hir as hir;
let hir::TraitBoundModifiers { constness, polarity } = modifiers;
match (constness, polarity) {
(hir::BoundConstness::Never, hir::BoundPolarity::Positive) => TraitBoundModifier::None,
(hir::BoundConstness::Never, hir::BoundPolarity::Maybe(_)) => TraitBoundModifier::Maybe,
(hir::BoundConstness::Maybe(_), hir::BoundPolarity::Positive) => {
TraitBoundModifier::MaybeConst
}
_ => TraitBoundModifier::None,
}
}
impl FromClean<clean::Type> for Type {
fn from_clean(ty: clean::Type, renderer: &JsonRenderer<'_>) -> Self {
use clean::Type::{
Array, BareFunction, BorrowedRef, Generic, ImplTrait, Infer, Primitive, QPath,
RawPointer, SelfTy, Slice, Tuple,
};
match ty {
clean::Type::Path { path } => Type::ResolvedPath(path.into_json(renderer)),
clean::Type::DynTrait(bounds, lt) => Type::DynTrait(DynTrait {
lifetime: lt.map(convert_lifetime),
traits: bounds.into_json(renderer),
}),
Generic(s) => Type::Generic(s.to_string()),
SelfTy => Type::Generic("Self".to_owned()),
Primitive(p) => Type::Primitive(p.as_sym().to_string()),
BareFunction(f) => Type::FunctionPointer(Box::new((*f).into_json(renderer))),
Tuple(t) => Type::Tuple(t.into_json(renderer)),
Slice(t) => Type::Slice(Box::new((*t).into_json(renderer))),
Array(t, s) => {
Type::Array { type_: Box::new((*t).into_json(renderer)), len: s.to_string() }
}
clean::Type::Pat(t, p) => Type::Pat {
type_: Box::new((*t).into_json(renderer)),
__pat_unstable_do_not_use: p.to_string(),
},
ImplTrait(g) => Type::ImplTrait(g.into_json(renderer)),
Infer => Type::Infer,
RawPointer(mutability, type_) => Type::RawPointer {
is_mutable: mutability == ast::Mutability::Mut,
type_: Box::new((*type_).into_json(renderer)),
},
BorrowedRef { lifetime, mutability, type_ } => Type::BorrowedRef {
lifetime: lifetime.map(convert_lifetime),
is_mutable: mutability == ast::Mutability::Mut,
type_: Box::new((*type_).into_json(renderer)),
},
QPath(box clean::QPathData { assoc, self_type, trait_, .. }) => Type::QualifiedPath {
name: assoc.name.to_string(),
args: Box::new(assoc.args.into_json(renderer)),
self_type: Box::new(self_type.into_json(renderer)),
trait_: trait_.map(|trait_| trait_.into_json(renderer)),
},
}
}
}
impl FromClean<clean::Path> for Path {
fn from_clean(path: clean::Path, renderer: &JsonRenderer<'_>) -> Path {
Path {
name: path.whole_name(),
id: renderer.id_from_item_default(path.def_id().into()),
args: path.segments.last().map(|args| Box::new(args.clone().args.into_json(renderer))),
}
}
}
impl FromClean<clean::Term> for Term {
fn from_clean(term: clean::Term, renderer: &JsonRenderer<'_>) -> Term {
match term {
clean::Term::Type(ty) => Term::Type(ty.into_json(renderer)),
clean::Term::Constant(c) => Term::Constant(c.into_json(renderer)),
}
}
}
impl FromClean<clean::BareFunctionDecl> for FunctionPointer {
fn from_clean(bare_decl: clean::BareFunctionDecl, renderer: &JsonRenderer<'_>) -> Self {
let clean::BareFunctionDecl { safety, generic_params, decl, abi } = bare_decl;
FunctionPointer {
header: FunctionHeader {
is_unsafe: safety.is_unsafe(),
is_const: false,
is_async: false,
abi: convert_abi(abi),
},
generic_params: generic_params.into_json(renderer),
sig: decl.into_json(renderer),
}
}
}
impl FromClean<clean::FnDecl> for FunctionSignature {
fn from_clean(decl: clean::FnDecl, renderer: &JsonRenderer<'_>) -> Self {
let clean::FnDecl { inputs, output, c_variadic } = decl;
FunctionSignature {
inputs: inputs
.values
.into_iter()
.map(|arg| (arg.name.to_string(), arg.type_.into_json(renderer)))
.collect(),
output: if output.is_unit() { None } else { Some(output.into_json(renderer)) },
is_c_variadic: c_variadic,
}
}
}
impl FromClean<clean::Trait> for Trait {
fn from_clean(trait_: clean::Trait, renderer: &JsonRenderer<'_>) -> Self {
let tcx = renderer.tcx;
let is_auto = trait_.is_auto(tcx);
let is_unsafe = trait_.safety(tcx).is_unsafe();
let is_dyn_compatible = trait_.is_dyn_compatible(tcx);
let clean::Trait { items, generics, bounds, .. } = trait_;
Trait {
is_auto,
is_unsafe,
is_dyn_compatible,
items: renderer.ids(items),
generics: generics.into_json(renderer),
bounds: bounds.into_json(renderer),
implementations: Vec::new(), }
}
}
impl FromClean<clean::PolyTrait> for PolyTrait {
fn from_clean(
clean::PolyTrait { trait_, generic_params }: clean::PolyTrait,
renderer: &JsonRenderer<'_>,
) -> Self {
PolyTrait {
trait_: trait_.into_json(renderer),
generic_params: generic_params.into_json(renderer),
}
}
}
impl FromClean<clean::Impl> for Impl {
fn from_clean(impl_: clean::Impl, renderer: &JsonRenderer<'_>) -> Self {
let provided_trait_methods = impl_.provided_trait_methods(renderer.tcx);
let clean::Impl { safety, generics, trait_, for_, items, polarity, kind } = impl_;
let (is_synthetic, blanket_impl) = match kind {
clean::ImplKind::Normal | clean::ImplKind::FakeVariadic => (false, None),
clean::ImplKind::Auto => (true, None),
clean::ImplKind::Blanket(ty) => (false, Some(*ty)),
};
let is_negative = match polarity {
ty::ImplPolarity::Positive | ty::ImplPolarity::Reservation => false,
ty::ImplPolarity::Negative => true,
};
Impl {
is_unsafe: safety.is_unsafe(),
generics: generics.into_json(renderer),
provided_trait_methods: provided_trait_methods
.into_iter()
.map(|x| x.to_string())
.collect(),
trait_: trait_.map(|path| path.into_json(renderer)),
for_: for_.into_json(renderer),
items: renderer.ids(items),
is_negative,
is_synthetic,
blanket_impl: blanket_impl.map(|x| x.into_json(renderer)),
}
}
}
pub(crate) fn from_function(
function: Box<clean::Function>,
has_body: bool,
header: rustc_hir::FnHeader,
renderer: &JsonRenderer<'_>,
) -> Function {
let clean::Function { decl, generics } = *function;
Function {
sig: decl.into_json(renderer),
generics: generics.into_json(renderer),
header: from_fn_header(&header),
has_body,
}
}
impl FromClean<clean::Enum> for Enum {
fn from_clean(enum_: clean::Enum, renderer: &JsonRenderer<'_>) -> Self {
let has_stripped_variants = enum_.has_stripped_entries();
let clean::Enum { variants, generics } = enum_;
Enum {
generics: generics.into_json(renderer),
has_stripped_variants,
variants: renderer.ids(variants),
impls: Vec::new(), }
}
}
impl FromClean<clean::Variant> for Variant {
fn from_clean(variant: clean::Variant, renderer: &JsonRenderer<'_>) -> Self {
use clean::VariantKind::*;
let discriminant = variant.discriminant.map(|d| d.into_json(renderer));
let kind = match variant.kind {
CLike => VariantKind::Plain,
Tuple(fields) => VariantKind::Tuple(renderer.ids_keeping_stripped(fields)),
Struct(s) => VariantKind::Struct {
has_stripped_fields: s.has_stripped_entries(),
fields: renderer.ids(s.fields),
},
};
Variant { kind, discriminant }
}
}
impl FromClean<clean::Discriminant> for Discriminant {
fn from_clean(disr: clean::Discriminant, renderer: &JsonRenderer<'_>) -> Self {
let tcx = renderer.tcx;
Discriminant {
expr: disr.expr(tcx).unwrap(),
value: disr.value(tcx, false),
}
}
}
impl FromClean<clean::Import> for Use {
fn from_clean(import: clean::Import, renderer: &JsonRenderer<'_>) -> Self {
use clean::ImportKind::*;
let (name, is_glob) = match import.kind {
Simple(s) => (s.to_string(), false),
Glob => (
import.source.path.last_opt().unwrap_or_else(|| Symbol::intern("*")).to_string(),
true,
),
};
Use {
source: import.source.path.whole_name(),
name,
id: import.source.did.map(ItemId::from).map(|i| renderer.id_from_item_default(i)),
is_glob,
}
}
}
impl FromClean<clean::ProcMacro> for ProcMacro {
fn from_clean(mac: clean::ProcMacro, _renderer: &JsonRenderer<'_>) -> 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 FromClean<Box<clean::TypeAlias>> for TypeAlias {
fn from_clean(type_alias: Box<clean::TypeAlias>, renderer: &JsonRenderer<'_>) -> Self {
let clean::TypeAlias { type_, generics, item_type: _, inner_type: _ } = *type_alias;
TypeAlias { type_: type_.into_json(renderer), generics: generics.into_json(renderer) }
}
}
fn convert_static(
stat: clean::Static,
safety: rustc_hir::Safety,
renderer: &JsonRenderer<'_>,
) -> Static {
let tcx = renderer.tcx;
Static {
type_: (*stat.type_).into_json(renderer),
is_mutable: stat.mutability == ast::Mutability::Mut,
is_unsafe: safety.is_unsafe(),
expr: stat
.expr
.map(|e| rendered_const(tcx, tcx.hir().body(e), tcx.hir().body_owner_def_id(e)))
.unwrap_or_default(),
}
}
impl FromClean<clean::TraitAlias> for TraitAlias {
fn from_clean(alias: clean::TraitAlias, renderer: &JsonRenderer<'_>) -> Self {
TraitAlias {
generics: alias.generics.into_json(renderer),
params: alias.bounds.into_json(renderer),
}
}
}
impl FromClean<ItemType> for ItemKind {
fn from_clean(kind: ItemType, _renderer: &JsonRenderer<'_>) -> Self {
use ItemType::*;
match kind {
Module => ItemKind::Module,
ExternCrate => ItemKind::ExternCrate,
Import => ItemKind::Use,
Struct => ItemKind::Struct,
Union => ItemKind::Union,
Enum => ItemKind::Enum,
Function | TyMethod | Method => ItemKind::Function,
TypeAlias => ItemKind::TypeAlias,
Static => ItemKind::Static,
Constant => ItemKind::Constant,
Trait => ItemKind::Trait,
Impl => ItemKind::Impl,
StructField => ItemKind::StructField,
Variant => ItemKind::Variant,
Macro => ItemKind::Macro,
Primitive => ItemKind::Primitive,
AssocConst => ItemKind::AssocConst,
AssocType => ItemKind::AssocType,
ForeignType => ItemKind::ExternType,
Keyword => ItemKind::Keyword,
TraitAlias => ItemKind::TraitAlias,
ProcAttribute => ItemKind::ProcAttribute,
ProcDerive => ItemKind::ProcDerive,
}
}
}