2015-11-24 16:00:26 -06:00
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// the rustc crate store interface. This also includes types that
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// are *mostly* used as a part of that interface, but these should
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// probably get a better home if someone can find one.
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use back::svh::Svh;
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use front::map as hir_map;
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use middle::def;
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use middle::lang_items;
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use middle::ty::{self, Ty};
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use middle::def_id::{DefId, DefIndex};
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use session::Session;
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use session::search_paths::PathKind;
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use util::nodemap::{FnvHashMap, NodeMap, NodeSet};
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use std::any::Any;
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use std::cell::RefCell;
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use std::rc::Rc;
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use std::path::PathBuf;
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use syntax::ast;
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use syntax::ast_util::{IdVisitingOperation};
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use syntax::attr;
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use syntax::codemap::Span;
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use syntax::ptr::P;
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use rustc_back::target::Target;
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use rustc_front::hir;
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2015-11-25 09:02:59 -06:00
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use rustc_front::intravisit::Visitor;
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use rustc_front::util::IdVisitor;
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pub use self::DefLike::{DlDef, DlField, DlImpl};
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pub use self::NativeLibraryKind::{NativeStatic, NativeFramework, NativeUnknown};
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// lonely orphan structs and enums looking for a better home
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#[derive(Clone, Debug)]
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pub struct LinkMeta {
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pub crate_name: String,
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pub crate_hash: Svh,
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}
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// Where a crate came from on the local filesystem. One of these two options
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// must be non-None.
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#[derive(PartialEq, Clone, Debug)]
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pub struct CrateSource {
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pub dylib: Option<(PathBuf, PathKind)>,
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pub rlib: Option<(PathBuf, PathKind)>,
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pub cnum: ast::CrateNum,
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}
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#[derive(Copy, Debug, PartialEq, Clone)]
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pub enum LinkagePreference {
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RequireDynamic,
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RequireStatic,
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}
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enum_from_u32! {
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#[derive(Copy, Clone, PartialEq)]
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pub enum NativeLibraryKind {
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NativeStatic, // native static library (.a archive)
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NativeFramework, // OSX-specific
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NativeUnknown, // default way to specify a dynamic library
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}
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}
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// Something that a name can resolve to.
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#[derive(Copy, Clone, Debug)]
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pub enum DefLike {
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DlDef(def::Def),
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DlImpl(DefId),
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DlField
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}
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/// The data we save and restore about an inlined item or method. This is not
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/// part of the AST that we parse from a file, but it becomes part of the tree
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/// that we trans.
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#[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
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pub enum InlinedItem {
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Item(P<hir::Item>),
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TraitItem(DefId /* impl id */, P<hir::TraitItem>),
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ImplItem(DefId /* impl id */, P<hir::ImplItem>),
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Foreign(P<hir::ForeignItem>),
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}
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/// A borrowed version of `hir::InlinedItem`.
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pub enum InlinedItemRef<'a> {
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Item(&'a hir::Item),
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TraitItem(DefId, &'a hir::TraitItem),
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ImplItem(DefId, &'a hir::ImplItem),
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Foreign(&'a hir::ForeignItem)
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}
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/// Item definitions in the currently-compiled crate would have the CrateNum
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/// LOCAL_CRATE in their DefId.
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pub const LOCAL_CRATE: ast::CrateNum = 0;
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pub struct ChildItem {
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pub def: DefLike,
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pub name: ast::Name,
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pub vis: hir::Visibility
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}
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pub enum FoundAst<'ast> {
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Found(&'ast InlinedItem),
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FoundParent(DefId, &'ast InlinedItem),
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NotFound,
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}
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2015-11-25 09:02:59 -06:00
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/// A store of Rust crates, through with their metadata
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/// can be accessed.
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///
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/// The `: Any` bound is a temporary measure that allows access
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/// to the backing `rustc_metadata::cstore::CStore` object. It
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/// will be removed in the near future - if you need to access
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/// internal APIs, please tell us.
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2015-11-24 16:00:26 -06:00
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pub trait CrateStore<'tcx> : Any {
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// item info
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fn stability(&self, def: DefId) -> Option<attr::Stability>;
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fn closure_kind(&self, tcx: &ty::ctxt<'tcx>, def_id: DefId)
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-> ty::ClosureKind;
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fn closure_ty(&self, tcx: &ty::ctxt<'tcx>, def_id: DefId)
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-> ty::ClosureTy<'tcx>;
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fn item_variances(&self, def: DefId) -> ty::ItemVariances;
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fn repr_attrs(&self, def: DefId) -> Vec<attr::ReprAttr>;
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fn item_type(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::TypeScheme<'tcx>;
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fn item_path(&self, def: DefId) -> Vec<hir_map::PathElem>;
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fn item_name(&self, def: DefId) -> ast::Name;
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fn item_predicates(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::GenericPredicates<'tcx>;
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fn item_super_predicates(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::GenericPredicates<'tcx>;
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fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute>;
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fn item_symbol(&self, def: DefId) -> String;
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fn trait_def(&self, tcx: &ty::ctxt<'tcx>, def: DefId)-> ty::TraitDef<'tcx>;
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fn adt_def(&self, tcx: &ty::ctxt<'tcx>, def: DefId) -> ty::AdtDefMaster<'tcx>;
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fn method_arg_names(&self, did: DefId) -> Vec<String>;
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fn inherent_implementations_for_type(&self, def_id: DefId) -> Vec<DefId>;
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// trait info
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fn implementations_of_trait(&self, def_id: DefId) -> Vec<DefId>;
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fn provided_trait_methods(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> Vec<Rc<ty::Method<'tcx>>>;
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fn trait_item_def_ids(&self, def: DefId)
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-> Vec<ty::ImplOrTraitItemId>;
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// impl info
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fn impl_items(&self, impl_def_id: DefId) -> Vec<ty::ImplOrTraitItemId>;
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fn impl_trait_ref(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> Option<ty::TraitRef<'tcx>>;
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fn impl_polarity(&self, def: DefId) -> Option<hir::ImplPolarity>;
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fn custom_coerce_unsized_kind(&self, def: DefId)
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-> Option<ty::adjustment::CustomCoerceUnsized>;
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fn associated_consts(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> Vec<Rc<ty::AssociatedConst<'tcx>>>;
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// trait/impl-item info
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fn trait_of_item(&self, tcx: &ty::ctxt<'tcx>, def_id: DefId)
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-> Option<DefId>;
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fn impl_or_trait_item(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::ImplOrTraitItem<'tcx>;
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// flags
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fn is_const_fn(&self, did: DefId) -> bool;
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fn is_defaulted_trait(&self, did: DefId) -> bool;
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fn is_impl(&self, did: DefId) -> bool;
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fn is_default_impl(&self, impl_did: DefId) -> bool;
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fn is_extern_fn(&self, tcx: &ty::ctxt<'tcx>, did: DefId) -> bool;
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fn is_static(&self, did: DefId) -> bool;
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fn is_static_method(&self, did: DefId) -> bool;
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fn is_statically_included_foreign_item(&self, id: ast::NodeId) -> bool;
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fn is_typedef(&self, did: DefId) -> bool;
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// crate metadata
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fn dylib_dependency_formats(&self, cnum: ast::CrateNum)
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-> Vec<(ast::CrateNum, LinkagePreference)>;
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fn lang_items(&self, cnum: ast::CrateNum) -> Vec<(DefIndex, usize)>;
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fn missing_lang_items(&self, cnum: ast::CrateNum) -> Vec<lang_items::LangItem>;
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fn is_staged_api(&self, cnum: ast::CrateNum) -> bool;
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fn is_explicitly_linked(&self, cnum: ast::CrateNum) -> bool;
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fn is_allocator(&self, cnum: ast::CrateNum) -> bool;
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fn crate_attrs(&self, cnum: ast::CrateNum) -> Vec<ast::Attribute>;
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fn crate_name(&self, cnum: ast::CrateNum) -> String;
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fn crate_hash(&self, cnum: ast::CrateNum) -> Svh;
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fn crate_struct_field_attrs(&self, cnum: ast::CrateNum)
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-> FnvHashMap<DefId, Vec<ast::Attribute>>;
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fn plugin_registrar_fn(&self, cnum: ast::CrateNum) -> Option<DefId>;
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fn native_libraries(&self, cnum: ast::CrateNum) -> Vec<(NativeLibraryKind, String)>;
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fn reachable_ids(&self, cnum: ast::CrateNum) -> Vec<DefId>;
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// resolve
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fn def_path(&self, def: DefId) -> hir_map::DefPath;
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fn tuple_struct_definition_if_ctor(&self, did: DefId) -> Option<DefId>;
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fn struct_field_names(&self, def: DefId) -> Vec<ast::Name>;
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fn item_children(&self, did: DefId) -> Vec<ChildItem>;
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fn crate_top_level_items(&self, cnum: ast::CrateNum) -> Vec<ChildItem>;
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// misc. metadata
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fn maybe_get_item_ast(&'tcx self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> FoundAst<'tcx>;
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// This is basically a 1-based range of ints, which is a little
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// silly - I may fix that.
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fn crates(&self) -> Vec<ast::CrateNum>;
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fn used_libraries(&self) -> Vec<(String, NativeLibraryKind)>;
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fn used_link_args(&self) -> Vec<String>;
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// utility functions
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fn metadata_filename(&self) -> &str;
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fn metadata_section_name(&self, target: &Target) -> &str;
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fn encode_type(&self, tcx: &ty::ctxt<'tcx>, ty: Ty<'tcx>) -> Vec<u8>;
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fn used_crates(&self, prefer: LinkagePreference) -> Vec<(ast::CrateNum, Option<PathBuf>)>;
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fn used_crate_source(&self, cnum: ast::CrateNum) -> CrateSource;
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fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<ast::CrateNum>;
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fn encode_metadata(&self,
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tcx: &ty::ctxt<'tcx>,
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reexports: &def::ExportMap,
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item_symbols: &RefCell<NodeMap<String>>,
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link_meta: &LinkMeta,
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reachable: &NodeSet,
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krate: &hir::Crate) -> Vec<u8>;
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fn metadata_encoding_version(&self) -> &[u8];
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}
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impl InlinedItem {
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pub fn visit<'ast,V>(&'ast self, visitor: &mut V)
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where V: Visitor<'ast>
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{
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match *self {
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InlinedItem::Item(ref i) => visitor.visit_item(&**i),
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InlinedItem::Foreign(ref i) => visitor.visit_foreign_item(&**i),
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InlinedItem::TraitItem(_, ref ti) => visitor.visit_trait_item(ti),
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InlinedItem::ImplItem(_, ref ii) => visitor.visit_impl_item(ii),
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}
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}
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pub fn visit_ids<O: IdVisitingOperation>(&self, operation: &mut O) {
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let mut id_visitor = IdVisitor::new(operation);
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self.visit(&mut id_visitor);
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}
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}
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// FIXME: find a better place for this?
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pub fn validate_crate_name(sess: Option<&Session>, s: &str, sp: Option<Span>) {
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let say = |s: &str| {
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match (sp, sess) {
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(_, None) => panic!("{}", s),
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(Some(sp), Some(sess)) => sess.span_err(sp, s),
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(None, Some(sess)) => sess.err(s),
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}
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};
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if s.is_empty() {
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say("crate name must not be empty");
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}
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for c in s.chars() {
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if c.is_alphanumeric() { continue }
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if c == '_' { continue }
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say(&format!("invalid character `{}` in crate name: `{}`", c, s));
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}
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match sess {
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Some(sess) => sess.abort_if_errors(),
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None => {}
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}
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}
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/// A dummy crate store that does not support any non-local crates,
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/// for test purposes.
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pub struct DummyCrateStore;
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#[allow(unused_variables)]
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impl<'tcx> CrateStore<'tcx> for DummyCrateStore {
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// item info
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fn stability(&self, def: DefId) -> Option<attr::Stability> { unimplemented!() }
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fn closure_kind(&self, tcx: &ty::ctxt<'tcx>, def_id: DefId)
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-> ty::ClosureKind { unimplemented!() }
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fn closure_ty(&self, tcx: &ty::ctxt<'tcx>, def_id: DefId)
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-> ty::ClosureTy<'tcx> { unimplemented!() }
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fn item_variances(&self, def: DefId) -> ty::ItemVariances { unimplemented!() }
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fn repr_attrs(&self, def: DefId) -> Vec<attr::ReprAttr> { unimplemented!() }
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fn item_type(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::TypeScheme<'tcx> { unimplemented!() }
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fn item_path(&self, def: DefId) -> Vec<hir_map::PathElem> { unimplemented!() }
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fn item_name(&self, def: DefId) -> ast::Name { unimplemented!() }
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fn item_predicates(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::GenericPredicates<'tcx> { unimplemented!() }
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fn item_super_predicates(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::GenericPredicates<'tcx> { unimplemented!() }
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fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute> { unimplemented!() }
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fn item_symbol(&self, def: DefId) -> String { unimplemented!() }
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fn trait_def(&self, tcx: &ty::ctxt<'tcx>, def: DefId)-> ty::TraitDef<'tcx>
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{ unimplemented!() }
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fn adt_def(&self, tcx: &ty::ctxt<'tcx>, def: DefId) -> ty::AdtDefMaster<'tcx>
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{ unimplemented!() }
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fn method_arg_names(&self, did: DefId) -> Vec<String> { unimplemented!() }
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fn inherent_implementations_for_type(&self, def_id: DefId) -> Vec<DefId> { vec![] }
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// trait info
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fn implementations_of_trait(&self, def_id: DefId) -> Vec<DefId> { vec![] }
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fn provided_trait_methods(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> Vec<Rc<ty::Method<'tcx>>> { unimplemented!() }
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fn trait_item_def_ids(&self, def: DefId)
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-> Vec<ty::ImplOrTraitItemId> { unimplemented!() }
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// impl info
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fn impl_items(&self, impl_def_id: DefId) -> Vec<ty::ImplOrTraitItemId>
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{ unimplemented!() }
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fn impl_trait_ref(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> Option<ty::TraitRef<'tcx>> { unimplemented!() }
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fn impl_polarity(&self, def: DefId) -> Option<hir::ImplPolarity> { unimplemented!() }
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fn custom_coerce_unsized_kind(&self, def: DefId)
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-> Option<ty::adjustment::CustomCoerceUnsized>
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{ unimplemented!() }
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fn associated_consts(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> Vec<Rc<ty::AssociatedConst<'tcx>>> { unimplemented!() }
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// trait/impl-item info
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fn trait_of_item(&self, tcx: &ty::ctxt<'tcx>, def_id: DefId)
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-> Option<DefId> { unimplemented!() }
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fn impl_or_trait_item(&self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> ty::ImplOrTraitItem<'tcx> { unimplemented!() }
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// flags
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fn is_const_fn(&self, did: DefId) -> bool { unimplemented!() }
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fn is_defaulted_trait(&self, did: DefId) -> bool { unimplemented!() }
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fn is_impl(&self, did: DefId) -> bool { unimplemented!() }
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fn is_default_impl(&self, impl_did: DefId) -> bool { unimplemented!() }
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fn is_extern_fn(&self, tcx: &ty::ctxt<'tcx>, did: DefId) -> bool { unimplemented!() }
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fn is_static(&self, did: DefId) -> bool { unimplemented!() }
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fn is_static_method(&self, did: DefId) -> bool { unimplemented!() }
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fn is_statically_included_foreign_item(&self, id: ast::NodeId) -> bool { false }
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fn is_typedef(&self, did: DefId) -> bool { unimplemented!() }
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// crate metadata
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fn dylib_dependency_formats(&self, cnum: ast::CrateNum)
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-> Vec<(ast::CrateNum, LinkagePreference)>
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{ unimplemented!() }
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fn lang_items(&self, cnum: ast::CrateNum) -> Vec<(DefIndex, usize)>
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{ unimplemented!() }
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fn missing_lang_items(&self, cnum: ast::CrateNum) -> Vec<lang_items::LangItem>
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{ unimplemented!() }
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fn is_staged_api(&self, cnum: ast::CrateNum) -> bool { unimplemented!() }
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fn is_explicitly_linked(&self, cnum: ast::CrateNum) -> bool { unimplemented!() }
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fn is_allocator(&self, cnum: ast::CrateNum) -> bool { unimplemented!() }
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fn crate_attrs(&self, cnum: ast::CrateNum) -> Vec<ast::Attribute>
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{ unimplemented!() }
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fn crate_name(&self, cnum: ast::CrateNum) -> String { unimplemented!() }
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fn crate_hash(&self, cnum: ast::CrateNum) -> Svh { unimplemented!() }
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fn crate_struct_field_attrs(&self, cnum: ast::CrateNum)
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-> FnvHashMap<DefId, Vec<ast::Attribute>>
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{ unimplemented!() }
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fn plugin_registrar_fn(&self, cnum: ast::CrateNum) -> Option<DefId>
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{ unimplemented!() }
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fn native_libraries(&self, cnum: ast::CrateNum) -> Vec<(NativeLibraryKind, String)>
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{ unimplemented!() }
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fn reachable_ids(&self, cnum: ast::CrateNum) -> Vec<DefId> { unimplemented!() }
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// resolve
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fn def_path(&self, def: DefId) -> hir_map::DefPath { unimplemented!() }
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fn tuple_struct_definition_if_ctor(&self, did: DefId) -> Option<DefId>
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{ unimplemented!() }
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fn struct_field_names(&self, def: DefId) -> Vec<ast::Name> { unimplemented!() }
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fn item_children(&self, did: DefId) -> Vec<ChildItem> { unimplemented!() }
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fn crate_top_level_items(&self, cnum: ast::CrateNum) -> Vec<ChildItem>
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{ unimplemented!() }
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// misc. metadata
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fn maybe_get_item_ast(&'tcx self, tcx: &ty::ctxt<'tcx>, def: DefId)
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-> FoundAst<'tcx> { unimplemented!() }
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|
// This is basically a 1-based range of ints, which is a little
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|
// silly - I may fix that.
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fn crates(&self) -> Vec<ast::CrateNum> { vec![] }
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fn used_libraries(&self) -> Vec<(String, NativeLibraryKind)> { vec![] }
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fn used_link_args(&self) -> Vec<String> { vec![] }
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// utility functions
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fn metadata_filename(&self) -> &str { unimplemented!() }
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fn metadata_section_name(&self, target: &Target) -> &str { unimplemented!() }
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fn encode_type(&self, tcx: &ty::ctxt<'tcx>, ty: Ty<'tcx>) -> Vec<u8>
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{ unimplemented!() }
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fn used_crates(&self, prefer: LinkagePreference) -> Vec<(ast::CrateNum, Option<PathBuf>)>
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|
{ vec![] }
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fn used_crate_source(&self, cnum: ast::CrateNum) -> CrateSource { unimplemented!() }
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fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<ast::CrateNum> { None }
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|
fn encode_metadata(&self,
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|
tcx: &ty::ctxt<'tcx>,
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|
reexports: &def::ExportMap,
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|
item_symbols: &RefCell<NodeMap<String>>,
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|
link_meta: &LinkMeta,
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|
reachable: &NodeSet,
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|
krate: &hir::Crate) -> Vec<u8> { vec![] }
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fn metadata_encoding_version(&self) -> &[u8] { unimplemented!() }
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|
}
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