bjoernager/rust
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rustdoc: use ThinVec for generic arg parts

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This reduces the size of both these args, and of path segments,
so should measurably help with memory use.
This commit is contained in:
Michael Howell 2025-01-29 15:14:10 -07:00
parent 0cc4f4f7b8
commit e90f129adf
3 changed files with 8 additions and 8 deletions
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10
src/librustdoc/clean/types.rs
View file

@ -2254,8 +2254,8 @@ impl GenericArg {
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
pub(crate) enum GenericArgs {
AngleBracketed { args: Box<[GenericArg]>, constraints: ThinVec<AssocItemConstraint> },
Parenthesized { inputs: Box<[Type]>, output: Option<Box<Type>> },
AngleBracketed { args: ThinVec<GenericArg>, constraints: ThinVec<AssocItemConstraint> },
Parenthesized { inputs: ThinVec<Type>, output: Option<Box<Type>> },
}
impl GenericArgs {
@ -2279,7 +2279,7 @@ impl GenericArgs {
assoc: PathSegment {
name: sym::Output,
args: GenericArgs::AngleBracketed {
args: Vec::new().into_boxed_slice(),
args: ThinVec::new(),
constraints: ThinVec::new(),
},
},
@ -2596,12 +2596,12 @@ mod size_asserts {
static_assert_size!(Crate, 56); // frequently moved by-value
static_assert_size!(DocFragment, 32);
static_assert_size!(GenericArg, 32);
static_assert_size!(GenericArgs, 32);
static_assert_size!(GenericArgs, 24);
static_assert_size!(GenericParamDef, 40);
static_assert_size!(Generics, 16);
static_assert_size!(Item, 48);
static_assert_size!(ItemKind, 48);
static_assert_size!(PathSegment, 40);
static_assert_size!(PathSegment, 32);
static_assert_size!(Type, 32);
// tidy-alphabetical-end
}

2
src/librustdoc/html/render/search_index.rs
View file

@ -821,7 +821,7 @@ pub(crate) fn get_function_type_for_search(
.map(|name| clean::PathSegment {
name: *name,
args: clean::GenericArgs::AngleBracketed {
args: Vec::new().into_boxed_slice(),
args: ThinVec::new(),
constraints: ThinVec::new(),
},
})

4
src/librustdoc/json/conversions.rs
View file

@ -231,11 +231,11 @@ impl FromClean<clean::GenericArgs> for GenericArgs {
use clean::GenericArgs::*;
match args {
AngleBracketed { args, constraints } => GenericArgs::AngleBracketed {
args: args.into_vec().into_json(renderer),
args: args.into_json(renderer),
constraints: constraints.into_json(renderer),
},
Parenthesized { inputs, output } => GenericArgs::Parenthesized {
inputs: inputs.into_vec().into_json(renderer),
inputs: inputs.into_json(renderer),
output: output.map(|a| (*a).into_json(renderer)),
},
}