src/librustdoc/doctree.rs

   1 //! This module is used to store stuff from Rust's AST in a more convenient
   2 //! manner (and with prettier names) before cleaning.
   3 pub use self::StructType::*;
   4
   5 use rustc_ast as ast;
   6 use rustc_span::hygiene::MacroKind;
   7 use rustc_span::{self, Span, Symbol};
   8
   9 use rustc_hir as hir;
  10 use rustc_hir::def_id::CrateNum;
  11
  12 pub struct Module<'hir> {
  13     pub name: Option<Symbol>,
  14     pub attrs: &'hir [ast::Attribute],
  15     pub where_outer: Span,
  16     pub where_inner: Span,
  17     pub extern_crates: Vec<ExternCrate<'hir>>,
  18     pub imports: Vec<Import<'hir>>,
  19     pub structs: Vec<Struct<'hir>>,
  20     pub unions: Vec<Union<'hir>>,
  21     pub enums: Vec<Enum<'hir>>,
  22     pub fns: Vec<Function<'hir>>,
  23     pub mods: Vec<Module<'hir>>,
  24     pub id: hir::HirId,
  25     pub typedefs: Vec<Typedef<'hir>>,
  26     pub opaque_tys: Vec<OpaqueTy<'hir>>,
  27     pub statics: Vec<Static<'hir>>,
  28     pub constants: Vec<Constant<'hir>>,
  29     pub traits: Vec<Trait<'hir>>,
  30     pub vis: &'hir hir::Visibility<'hir>,
  31     pub impls: Vec<Impl<'hir>>,
  32     pub foreigns: Vec<ForeignItem<'hir>>,
  33     pub macros: Vec<Macro<'hir>>,
  34     pub proc_macros: Vec<ProcMacro<'hir>>,
  35     pub trait_aliases: Vec<TraitAlias<'hir>>,
  36     pub is_crate: bool,
  37 }
  38
  39 impl Module<'hir> {
  40     pub fn new(
  41         name: Option<Symbol>,
  42         attrs: &'hir [ast::Attribute],
  43         vis: &'hir hir::Visibility<'hir>,
  44     ) -> Module<'hir> {
  45         Module {
  46             name,
  47             id: hir::CRATE_HIR_ID,
  48             vis,
  49             where_outer: rustc_span::DUMMY_SP,
  50             where_inner: rustc_span::DUMMY_SP,
  51             attrs,
  52             extern_crates: Vec::new(),
  53             imports: Vec::new(),
  54             structs: Vec::new(),
  55             unions: Vec::new(),
  56             enums: Vec::new(),
  57             fns: Vec::new(),
  58             mods: Vec::new(),
  59             typedefs: Vec::new(),
  60             opaque_tys: Vec::new(),
  61             statics: Vec::new(),
  62             constants: Vec::new(),
  63             traits: Vec::new(),
  64             impls: Vec::new(),
  65             foreigns: Vec::new(),
  66             macros: Vec::new(),
  67             proc_macros: Vec::new(),
  68             trait_aliases: Vec::new(),
  69             is_crate: false,
  70         }
  71     }
  72 }
  73
  74 #[derive(Debug, Clone, Copy)]
  75 pub enum StructType {
  76     /// A braced struct
  77     Plain,
  78     /// A tuple struct
  79     Tuple,
  80     /// A unit struct
  81     Unit,
  82 }
  83
  84 pub struct Struct<'hir> {
  85     pub vis: &'hir hir::Visibility<'hir>,
  86     pub id: hir::HirId,
  87     pub struct_type: StructType,
  88     pub name: Symbol,
  89     pub generics: &'hir hir::Generics<'hir>,
  90     pub attrs: &'hir [ast::Attribute],
  91     pub fields: &'hir [hir::StructField<'hir>],
  92     pub span: Span,
  93 }
  94
  95 pub struct Union<'hir> {
  96     pub vis: &'hir hir::Visibility<'hir>,
  97     pub id: hir::HirId,
  98     pub struct_type: StructType,
  99     pub name: Symbol,
 100     pub generics: &'hir hir::Generics<'hir>,
 101     pub attrs: &'hir [ast::Attribute],
 102     pub fields: &'hir [hir::StructField<'hir>],
 103     pub span: Span,
 104 }
 105
 106 pub struct Enum<'hir> {
 107     pub vis: &'hir hir::Visibility<'hir>,
 108     pub variants: Vec<Variant<'hir>>,
 109     pub generics: &'hir hir::Generics<'hir>,
 110     pub attrs: &'hir [ast::Attribute],
 111     pub id: hir::HirId,
 112     pub span: Span,
 113     pub name: Symbol,
 114 }
 115
 116 pub struct Variant<'hir> {
 117     pub name: Symbol,
 118     pub id: hir::HirId,
 119     pub attrs: &'hir [ast::Attribute],
 120     pub def: &'hir hir::VariantData<'hir>,
 121     pub span: Span,
 122 }
 123
 124 pub struct Function<'hir> {
 125     pub decl: &'hir hir::FnDecl<'hir>,
 126     pub attrs: &'hir [ast::Attribute],
 127     pub id: hir::HirId,
 128     pub name: Symbol,
 129     pub vis: &'hir hir::Visibility<'hir>,
 130     pub header: hir::FnHeader,
 131     pub span: Span,
 132     pub generics: &'hir hir::Generics<'hir>,
 133     pub body: hir::BodyId,
 134 }
 135
 136 pub struct Typedef<'hir> {
 137     pub ty: &'hir hir::Ty<'hir>,
 138     pub gen: &'hir hir::Generics<'hir>,
 139     pub name: Symbol,
 140     pub id: hir::HirId,
 141     pub attrs: &'hir [ast::Attribute],
 142     pub span: Span,
 143     pub vis: &'hir hir::Visibility<'hir>,
 144 }
 145
 146 pub struct OpaqueTy<'hir> {
 147     pub opaque_ty: &'hir hir::OpaqueTy<'hir>,
 148     pub name: Symbol,
 149     pub id: hir::HirId,
 150     pub attrs: &'hir [ast::Attribute],
 151     pub span: Span,
 152     pub vis: &'hir hir::Visibility<'hir>,
 153 }
 154
 155 #[derive(Debug)]
 156 pub struct Static<'hir> {
 157     pub type_: &'hir hir::Ty<'hir>,
 158     pub mutability: hir::Mutability,
 159     pub expr: hir::BodyId,
 160     pub name: Symbol,
 161     pub attrs: &'hir [ast::Attribute],
 162     pub vis: &'hir hir::Visibility<'hir>,
 163     pub id: hir::HirId,
 164     pub span: Span,
 165 }
 166
 167 pub struct Constant<'hir> {
 168     pub type_: &'hir hir::Ty<'hir>,
 169     pub expr: hir::BodyId,
 170     pub name: Symbol,
 171     pub attrs: &'hir [ast::Attribute],
 172     pub vis: &'hir hir::Visibility<'hir>,
 173     pub id: hir::HirId,
 174     pub span: Span,
 175 }
 176
 177 pub struct Trait<'hir> {
 178     pub is_auto: hir::IsAuto,
 179     pub unsafety: hir::Unsafety,
 180     pub name: Symbol,
 181     pub items: Vec<&'hir hir::TraitItem<'hir>>,
 182     pub generics: &'hir hir::Generics<'hir>,
 183     pub bounds: &'hir [hir::GenericBound<'hir>],
 184     pub attrs: &'hir [ast::Attribute],
 185     pub id: hir::HirId,
 186     pub span: Span,
 187     pub vis: &'hir hir::Visibility<'hir>,
 188 }
 189
 190 pub struct TraitAlias<'hir> {
 191     pub name: Symbol,
 192     pub generics: &'hir hir::Generics<'hir>,
 193     pub bounds: &'hir [hir::GenericBound<'hir>],
 194     pub attrs: &'hir [ast::Attribute],
 195     pub id: hir::HirId,
 196     pub span: Span,
 197     pub vis: &'hir hir::Visibility<'hir>,
 198 }
 199
 200 #[derive(Debug)]
 201 pub struct Impl<'hir> {
 202     pub unsafety: hir::Unsafety,
 203     pub polarity: hir::ImplPolarity,
 204     pub defaultness: hir::Defaultness,
 205     pub constness: hir::Constness,
 206     pub generics: &'hir hir::Generics<'hir>,
 207     pub trait_: &'hir Option<hir::TraitRef<'hir>>,
 208     pub for_: &'hir hir::Ty<'hir>,
 209     pub items: Vec<&'hir hir::ImplItem<'hir>>,
 210     pub attrs: &'hir [ast::Attribute],
 211     pub span: Span,
 212     pub vis: &'hir hir::Visibility<'hir>,
 213     pub id: hir::HirId,
 214 }
 215
 216 pub struct ForeignItem<'hir> {
 217     pub vis: &'hir hir::Visibility<'hir>,
 218     pub id: hir::HirId,
 219     pub name: Symbol,
 220     pub kind: &'hir hir::ForeignItemKind<'hir>,
 221     pub attrs: &'hir [ast::Attribute],
 222     pub span: Span,
 223 }
 224
 225 // For Macro we store the DefId instead of the NodeId, since we also create
 226 // these imported macro_rules (which only have a DUMMY_NODE_ID).
 227 pub struct Macro<'hir> {
 228     pub name: Symbol,
 229     pub hid: hir::HirId,
 230     pub def_id: hir::def_id::DefId,
 231     pub attrs: &'hir [ast::Attribute],
 232     pub span: Span,
 233     pub matchers: Vec<Span>,
 234     pub imported_from: Option<Symbol>,
 235 }
 236
 237 pub struct ExternCrate<'hir> {
 238     pub name: Symbol,
 239     pub cnum: CrateNum,
 240     pub path: Option<String>,
 241     pub vis: &'hir hir::Visibility<'hir>,
 242     pub attrs: &'hir [ast::Attribute],
 243     pub span: Span,
 244 }
 245
 246 pub struct Import<'hir> {
 247     pub name: Symbol,
 248     pub id: hir::HirId,
 249     pub vis: &'hir hir::Visibility<'hir>,
 250     pub attrs: &'hir [ast::Attribute],
 251     pub path: &'hir hir::Path<'hir>,
 252     pub glob: bool,
 253     pub span: Span,
 254 }
 255
 256 pub struct ProcMacro<'hir> {
 257     pub name: Symbol,
 258     pub id: hir::HirId,
 259     pub kind: MacroKind,
 260     pub helpers: Vec<Symbol>,
 261     pub attrs: &'hir [ast::Attribute],
 262     pub span: Span,
 263 }
 264
 265 pub fn struct_type_from_def(vdata: &hir::VariantData<'_>) -> StructType {
 266     match *vdata {
 267         hir::VariantData::Struct(..) => Plain,
 268         hir::VariantData::Tuple(..) => Tuple,
 269         hir::VariantData::Unit(..) => Unit,
 270     }
 271 }