Crate rustc_hir

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Expand description

HIR datatypes. See the rustc dev guide for more info.

Re-exports

Modules

  • arena 🔒
  • def
  • def_id
  • def_path_hash_map
  • definitions
    For each definition, we track the following data. A definition here is defined somewhat circularly as “something with a DefId”, but it generally corresponds to things like structs, enums, etc. There are also some rather random cases (like const initializer expressions) that are mostly just leftovers.
  • diagnostic_items
  • hir 🔒
  • hir_id
  • intravisit
    HIR walker for walking the contents of nodes.
  • lang_items
    Defines language items.
  • pat_util
  • stable_hash_impls 🔒
  • target 🔒
    This module implements some validity checks for attributes. In particular it verifies that #[inline] and #[repr] attributes are attached to items that actually support them and if there are conflicts between multiple such attributes attached to the same item.
  • weak_lang_items
    Validity checking for weak lang items

Macros

  • arena_types
    This higher-order macro declares a list of types which can be allocated by Arena. Note that all Copy types can be allocated by default and need not be specified here.

Structs

  • AnonConst
    A constant (expression) that’s not an item or associated item, but needs its own DefId for type-checking, const-eval, etc. These are usually found nested inside types (e.g., array lengths) or expressions (e.g., repeat counts), and also used to define explicit discriminant values for enum variants.
  • Arena
  • Arm
    Represents a single arm of a match expression, e.g. <pat> (if <guard>) => <body>.
  • AttributeMap
    Attributes owned by a HIR owner.
  • BareFnTy
  • BindingAnnotation
    Explicit binding annotations given in the HIR for a binding. Note that this is not the final binding mode that we infer after type inference.
  • Block
    A block of statements { .. }, which may have a label (in this case the targeted_by_break field will be true) and may be unsafe by means of the rules being anything but DefaultBlock.
  • Body
    The body of a function, closure, or constant value. In the case of a function, the body contains not only the function body itself (which is an expression), but also the argument patterns, since those are something that the caller doesn’t really care about.
  • BodyId
  • Closure
  • ConstArg
  • ConstBlock
    An inline constant expression const { something }.
  • Crate
    The top-level data structure that stores the entire contents of the crate currently being compiled.
  • Destination
  • DotDotPos
  • EnumDef
  • Expr
    An expression.
  • ExprField
  • FieldDef
  • FnDecl
    Represents the header (not the body) of a function declaration.
  • FnHeader
  • FnSig
    Represents a function’s signature in a trait declaration, trait implementation, or a free function.
  • ForeignItem
  • ForeignItemId
  • ForeignItemRef
    A reference from a foreign block to one of its items. This contains the item’s ID, naturally, but also the item’s name and some other high-level details (like whether it is an associated type or method, and whether it is public). This allows other passes to find the impl they want without loading the ID (which means fewer edges in the incremental compilation graph).
  • GenericArgs
  • GenericParam
  • GenericParamCount
  • Generics
    Represents lifetimes and type parameters attached to a declaration of a function, enum, trait, etc.
  • Impl
  • ImplItem
    Represents anything within an impl block.
  • ImplItemId
  • ImplItemRef
    A reference from an impl to one of its associated items. This contains the item’s ID, naturally, but also the item’s name and some other high-level details (like whether it is an associated type or method, and whether it is public). This allows other passes to find the impl they want without loading the ID (which means fewer edges in the incremental compilation graph).
  • InferArg
  • InlineAsm
  • Item
    An item
  • ItemId
  • Let
    Represents a let <pat>[: <ty>] = <expr> expression (not a Local), occurring in an if-let or let-else, evaluating to a boolean. Typically the pattern is refutable.
  • Lifetime
  • Local
    Represents a let statement (i.e., let <pat>:<ty> = <init>;).
  • Mod
  • ModSpans
  • MutTy
  • OpaqueTy
  • OwnerInfo
    Full information resulting from lowering an AST node.
  • OwnerNodes
    Map of all HIR nodes inside the current owner. These nodes are mapped by ItemLocalId alongside the index of their parent node. The HIR tree, including bodies, is pre-hashed.
  • Param
    Represents a parameter in a function header.
  • ParentedNode
    HIR node coupled with its parent’s id in the same HIR owner.
  • Pat
  • PatField
    A single field in a struct pattern.
  • Path
    A Path is essentially Rust’s notion of a name; for instance, std::cmp::PartialEq. It’s represented as a sequence of identifiers, along with a bunch of supporting information.
  • PathSegment
    A segment of a path: an identifier, an optional lifetime, and a set of types.
  • PolyTraitRef
  • Stmt
    A statement.
  • TraitCandidate
  • TraitItem
    Represents an item declaration within a trait declaration, possibly including a default implementation. A trait item is either required (meaning it doesn’t have an implementation, just a signature) or provided (meaning it has a default implementation).
  • TraitItemId
  • TraitItemRef
    A reference from an trait to one of its associated items. This contains the item’s id, naturally, but also the item’s name and some other high-level details (like whether it is an associated type or method, and whether it is public). This allows other passes to find the impl they want without loading the ID (which means fewer edges in the incremental compilation graph).
  • TraitRef
    References to traits in impls.
  • Ty
  • TypeBinding
    Bind a type to an associated type (i.e., A = Foo).
  • Upvar
    A variable captured by a closure.
  • Variant
  • WhereBoundPredicate
    A type bound (e.g., for<'c> Foo: Send + Clone + 'c).
  • WhereEqPredicate
    An equality predicate (e.g., T = int); currently unsupported.
  • WhereRegionPredicate
    A lifetime predicate (e.g., 'a: 'b + 'c).

Enums

Constants

Traits

  • ArenaAllocatable
  • HashStableContext
    Requirements for a StableHashingContext to be used in this crate. This is a hack to allow using the HashStable_Generic derive macro instead of implementing everything in rustc_middle.

Functions

  • is_range_literal
    Checks if the specified expression is a built-in range literal. (See: LoweringContext::lower_expr()).

Type Aliases