tests/rustdoc/type-layout.rs

   1 // compile-flags: --show-type-layout -Z unstable-options
   2
   3 // @hasraw type_layout/struct.Foo.html 'Size: '
   4 // @hasraw - ' bytes'
   5 // @has - '//*[@id="layout"]/a[@href="#layout"]' ''
   6 pub struct Foo {
   7     pub a: usize,
   8     b: Vec<String>,
   9 }
  10
  11 // @hasraw type_layout/enum.Bar.html 'Size: '
  12 // @hasraw - ' bytes'
  13 pub enum Bar<'a> {
  14     A(String),
  15     B(&'a str, (std::collections::HashMap<String, usize>, Foo)),
  16 }
  17
  18 // @hasraw type_layout/union.Baz.html 'Size: '
  19 // @hasraw - ' bytes'
  20 pub union Baz {
  21     a: &'static str,
  22     b: usize,
  23     c: &'static [u8],
  24 }
  25
  26 // @hasraw type_layout/struct.X.html 'Size: '
  27 // @hasraw - ' bytes'
  28 pub struct X(usize);
  29
  30 // @hasraw type_layout/struct.Y.html 'Size: '
  31 // @hasraw - '1 byte'
  32 // @!hasraw - ' bytes'
  33 pub struct Y(u8);
  34
  35 // @hasraw type_layout/struct.Z.html 'Size: '
  36 // @hasraw - '0 bytes'
  37 pub struct Z;
  38
  39 // We can't compute layout for generic types.
  40 // @hasraw type_layout/struct.Generic.html 'Unable to compute type layout, possibly due to this type having generic parameters'
  41 // @!hasraw - 'Size: '
  42 pub struct Generic<T>(T);
  43
  44 // We *can*, however, compute layout for types that are only generic over lifetimes,
  45 // because lifetimes are a type-system construct.
  46 // @hasraw type_layout/struct.GenericLifetimes.html 'Size: '
  47 // @hasraw - ' bytes'
  48 pub struct GenericLifetimes<'a>(&'a str);
  49
  50 // @hasraw type_layout/struct.Unsized.html 'Size: '
  51 // @hasraw - '(unsized)'
  52 pub struct Unsized([u8]);
  53
  54 // @hasraw type_layout/type.TypeAlias.html 'Size: '
  55 // @hasraw - ' bytes'
  56 pub type TypeAlias = X;
  57
  58 // @hasraw type_layout/type.GenericTypeAlias.html 'Size: '
  59 // @hasraw - '8 bytes'
  60 pub type GenericTypeAlias = (Generic<(u32, ())>, Generic<u32>);
  61
  62 // Regression test for the rustdoc equivalent of #85103.
  63 // @hasraw type_layout/type.Edges.html 'Encountered an error during type layout; the type failed to be normalized.'
  64 pub type Edges<'a, E> = std::borrow::Cow<'a, [E]>;
  65
  66 // @!hasraw type_layout/trait.MyTrait.html 'Size: '
  67 pub trait MyTrait {}
  68
  69 // @hasraw type_layout/enum.Variants.html 'Size: '
  70 // @hasraw - '2 bytes'
  71 // @hasraw - '<code>A</code>: 0 bytes'
  72 // @hasraw - '<code>B</code>: 1 byte'
  73 pub enum Variants {
  74     A,
  75     B(u8),
  76 }
  77
  78 // @hasraw type_layout/enum.WithNiche.html 'Size: '
  79 // @has - //p '4 bytes'
  80 // @hasraw - '<code>None</code>: 0 bytes'
  81 // @hasraw - '<code>Some</code>: 4 bytes'
  82 pub enum WithNiche {
  83     None,
  84     Some(std::num::NonZeroU32),
  85 }