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Initial vendor packages

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Signed-off-by: Valentin Popov <valentin@popov.link>
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Valentin Popov
2024-01-08 01:21:28 +04:00
parent 5ecd8cf2cb
commit 1b6a04ca55
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1
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{"files":{"Cargo.toml":"12129d19d241f8b8041854ed140f6bdfb05ec43742d0f80779e40b1b24365c79","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"0b28172679e0009b655da42797c03fd163a3379d5cfa67ba1f1655e974a2a1a9","README.md":"a01127c37308457e8d396b176fb790846be0978c173be3f13260b62efcef011b","benches/bench.rs":"d82015eae942ee5cf74ace8c3c260ee2c6b5bcbeeb87254d2c72622c747a708a","debug_metadata/README.md":"4d7f1c1b2c25ce2231ef71864d06e54323867459035b53bc9e00f66a0a44f82e","debug_metadata/smallvec.natvis":"3092ddebd8fffc3486536d7f27f8c5eae3a8a093d45cd8eeb3946ea2b0c35a15","scripts/run_miri.sh":"74a9f9adc43f986e81977b03846f7dd00122a0150bd8ec3fe4842a1a787e0f07","src/arbitrary.rs":"22e55cfbf60374945b30e6d0855129eff67cd8b878cef6fa997e1f4be67b9e3d","src/lib.rs":"fbae23a885178a0a8e1372e81e85fd9d65f4416f53ab489b1bde65854396ff48","src/specialization.rs":"46433586203399251cba496d67b88d34e1be3c2b591986b77463513da1c66471","src/tests.rs":"11c951cb4da40e13de1f7058e023cd29e857216e1e3243111a63ae79e931dbc6","tests/debugger_visualizer.rs":"185456ad253957fc0c9e904ff8a1135397ac991c29fa3c60f75d8d81f7463022","tests/macro.rs":"22ad4f6f104a599fdcba19cad8834105b8656b212fb6c7573a427d447f5db14f"},"package":"4dccd0940a2dcdf68d092b8cbab7dc0ad8fa938bf95787e1b916b0e3d0e8e970"}

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
edition = "2018"
name = "smallvec"
version = "1.11.2"
authors = ["The Servo Project Developers"]
description = "'Small vector' optimization: store up to a small number of items on the stack"
documentation = "https://docs.rs/smallvec/"
readme = "README.md"
keywords = [
"small",
"vec",
"vector",
"stack",
"no_std",
]
categories = ["data-structures"]
license = "MIT OR Apache-2.0"
repository = "https://github.com/servo/rust-smallvec"
[package.metadata.docs.rs]
all-features = true
rustdoc-args = [
"--cfg",
"docsrs",
"--generate-link-to-definition",
]
[[test]]
name = "debugger_visualizer"
path = "tests/debugger_visualizer.rs"
test = false
required-features = ["debugger_visualizer"]
[dependencies.arbitrary]
version = "1"
optional = true
[dependencies.serde]
version = "1"
optional = true
default-features = false
[dev-dependencies.bincode]
version = "1.0.1"
[dev-dependencies.debugger_test]
version = "0.1.0"
[dev-dependencies.debugger_test_parser]
version = "0.1.0"
[features]
const_generics = []
const_new = ["const_generics"]
debugger_visualizer = []
drain_filter = []
drain_keep_rest = ["drain_filter"]
may_dangle = []
specialization = []
union = []
write = []

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Apache License
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Copyright (c) 2018 The Servo Project Developers
Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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rust-smallvec
=============
[Documentation](https://docs.rs/smallvec/)
[Release notes](https://github.com/servo/rust-smallvec/releases)
"Small vector" optimization for Rust: store up to a small number of items on the stack
## Example
```rust
use smallvec::{SmallVec, smallvec};
// This SmallVec can hold up to 4 items on the stack:
let mut v: SmallVec<[i32; 4]> = smallvec![1, 2, 3, 4];
// It will automatically move its contents to the heap if
// contains more than four items:
v.push(5);
// SmallVec points to a slice, so you can use normal slice
// indexing and other methods to access its contents:
v[0] = v[1] + v[2];
v.sort();
```

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#![feature(test)]
#![allow(deprecated)]
extern crate test;
use self::test::Bencher;
use smallvec::{ExtendFromSlice, smallvec, SmallVec};
const VEC_SIZE: usize = 16;
const SPILLED_SIZE: usize = 100;
trait Vector<T>: for<'a> From<&'a [T]> + Extend<T> + ExtendFromSlice<T> {
fn new() -> Self;
fn push(&mut self, val: T);
fn pop(&mut self) -> Option<T>;
fn remove(&mut self, p: usize) -> T;
fn insert(&mut self, n: usize, val: T);
fn from_elem(val: T, n: usize) -> Self;
fn from_elems(val: &[T]) -> Self;
}
impl<T: Copy> Vector<T> for Vec<T> {
fn new() -> Self {
Self::with_capacity(VEC_SIZE)
}
fn push(&mut self, val: T) {
self.push(val)
}
fn pop(&mut self) -> Option<T> {
self.pop()
}
fn remove(&mut self, p: usize) -> T {
self.remove(p)
}
fn insert(&mut self, n: usize, val: T) {
self.insert(n, val)
}
fn from_elem(val: T, n: usize) -> Self {
vec![val; n]
}
fn from_elems(val: &[T]) -> Self {
val.to_owned()
}
}
impl<T: Copy> Vector<T> for SmallVec<[T; VEC_SIZE]> {
fn new() -> Self {
Self::new()
}
fn push(&mut self, val: T) {
self.push(val)
}
fn pop(&mut self) -> Option<T> {
self.pop()
}
fn remove(&mut self, p: usize) -> T {
self.remove(p)
}
fn insert(&mut self, n: usize, val: T) {
self.insert(n, val)
}
fn from_elem(val: T, n: usize) -> Self {
smallvec![val; n]
}
fn from_elems(val: &[T]) -> Self {
SmallVec::from_slice(val)
}
}
macro_rules! make_benches {
($typ:ty { $($b_name:ident => $g_name:ident($($args:expr),*),)* }) => {
$(
#[bench]
fn $b_name(b: &mut Bencher) {
$g_name::<$typ>($($args,)* b)
}
)*
}
}
make_benches! {
SmallVec<[u64; VEC_SIZE]> {
bench_push => gen_push(SPILLED_SIZE as _),
bench_push_small => gen_push(VEC_SIZE as _),
bench_insert_push => gen_insert_push(SPILLED_SIZE as _),
bench_insert_push_small => gen_insert_push(VEC_SIZE as _),
bench_insert => gen_insert(SPILLED_SIZE as _),
bench_insert_small => gen_insert(VEC_SIZE as _),
bench_remove => gen_remove(SPILLED_SIZE as _),
bench_remove_small => gen_remove(VEC_SIZE as _),
bench_extend => gen_extend(SPILLED_SIZE as _),
bench_extend_small => gen_extend(VEC_SIZE as _),
bench_from_iter => gen_from_iter(SPILLED_SIZE as _),
bench_from_iter_small => gen_from_iter(VEC_SIZE as _),
bench_from_slice => gen_from_slice(SPILLED_SIZE as _),
bench_from_slice_small => gen_from_slice(VEC_SIZE as _),
bench_extend_from_slice => gen_extend_from_slice(SPILLED_SIZE as _),
bench_extend_from_slice_small => gen_extend_from_slice(VEC_SIZE as _),
bench_macro_from_elem => gen_from_elem(SPILLED_SIZE as _),
bench_macro_from_elem_small => gen_from_elem(VEC_SIZE as _),
bench_pushpop => gen_pushpop(),
}
}
make_benches! {
Vec<u64> {
bench_push_vec => gen_push(SPILLED_SIZE as _),
bench_push_vec_small => gen_push(VEC_SIZE as _),
bench_insert_push_vec => gen_insert_push(SPILLED_SIZE as _),
bench_insert_push_vec_small => gen_insert_push(VEC_SIZE as _),
bench_insert_vec => gen_insert(SPILLED_SIZE as _),
bench_insert_vec_small => gen_insert(VEC_SIZE as _),
bench_remove_vec => gen_remove(SPILLED_SIZE as _),
bench_remove_vec_small => gen_remove(VEC_SIZE as _),
bench_extend_vec => gen_extend(SPILLED_SIZE as _),
bench_extend_vec_small => gen_extend(VEC_SIZE as _),
bench_from_iter_vec => gen_from_iter(SPILLED_SIZE as _),
bench_from_iter_vec_small => gen_from_iter(VEC_SIZE as _),
bench_from_slice_vec => gen_from_slice(SPILLED_SIZE as _),
bench_from_slice_vec_small => gen_from_slice(VEC_SIZE as _),
bench_extend_from_slice_vec => gen_extend_from_slice(SPILLED_SIZE as _),
bench_extend_from_slice_vec_small => gen_extend_from_slice(VEC_SIZE as _),
bench_macro_from_elem_vec => gen_from_elem(SPILLED_SIZE as _),
bench_macro_from_elem_vec_small => gen_from_elem(VEC_SIZE as _),
bench_pushpop_vec => gen_pushpop(),
}
}
fn gen_push<V: Vector<u64>>(n: u64, b: &mut Bencher) {
#[inline(never)]
fn push_noinline<V: Vector<u64>>(vec: &mut V, x: u64) {
vec.push(x);
}
b.iter(|| {
let mut vec = V::new();
for x in 0..n {
push_noinline(&mut vec, x);
}
vec
});
}
fn gen_insert_push<V: Vector<u64>>(n: u64, b: &mut Bencher) {
#[inline(never)]
fn insert_push_noinline<V: Vector<u64>>(vec: &mut V, x: u64) {
vec.insert(x as usize, x);
}
b.iter(|| {
let mut vec = V::new();
for x in 0..n {
insert_push_noinline(&mut vec, x);
}
vec
});
}
fn gen_insert<V: Vector<u64>>(n: u64, b: &mut Bencher) {
#[inline(never)]
fn insert_noinline<V: Vector<u64>>(vec: &mut V, p: usize, x: u64) {
vec.insert(p, x)
}
b.iter(|| {
let mut vec = V::new();
// Always insert at position 0 so that we are subject to shifts of
// many different lengths.
vec.push(0);
for x in 0..n {
insert_noinline(&mut vec, 0, x);
}
vec
});
}
fn gen_remove<V: Vector<u64>>(n: usize, b: &mut Bencher) {
#[inline(never)]
fn remove_noinline<V: Vector<u64>>(vec: &mut V, p: usize) -> u64 {
vec.remove(p)
}
b.iter(|| {
let mut vec = V::from_elem(0, n as _);
for _ in 0..n {
remove_noinline(&mut vec, 0);
}
});
}
fn gen_extend<V: Vector<u64>>(n: u64, b: &mut Bencher) {
b.iter(|| {
let mut vec = V::new();
vec.extend(0..n);
vec
});
}
fn gen_from_iter<V: Vector<u64>>(n: u64, b: &mut Bencher) {
let v: Vec<u64> = (0..n).collect();
b.iter(|| {
let vec = V::from(&v);
vec
});
}
fn gen_from_slice<V: Vector<u64>>(n: u64, b: &mut Bencher) {
let v: Vec<u64> = (0..n).collect();
b.iter(|| {
let vec = V::from_elems(&v);
vec
});
}
fn gen_extend_from_slice<V: Vector<u64>>(n: u64, b: &mut Bencher) {
let v: Vec<u64> = (0..n).collect();
b.iter(|| {
let mut vec = V::new();
vec.extend_from_slice(&v);
vec
});
}
fn gen_pushpop<V: Vector<u64>>(b: &mut Bencher) {
#[inline(never)]
fn pushpop_noinline<V: Vector<u64>>(vec: &mut V, x: u64) -> Option<u64> {
vec.push(x);
vec.pop()
}
b.iter(|| {
let mut vec = V::new();
for x in 0..SPILLED_SIZE as _ {
pushpop_noinline(&mut vec, x);
}
vec
});
}
fn gen_from_elem<V: Vector<u64>>(n: usize, b: &mut Bencher) {
b.iter(|| {
let vec = V::from_elem(42, n);
vec
});
}
#[bench]
fn bench_insert_many(b: &mut Bencher) {
#[inline(never)]
fn insert_many_noinline<I: IntoIterator<Item = u64>>(
vec: &mut SmallVec<[u64; VEC_SIZE]>,
index: usize,
iterable: I,
) {
vec.insert_many(index, iterable)
}
b.iter(|| {
let mut vec = SmallVec::<[u64; VEC_SIZE]>::new();
insert_many_noinline(&mut vec, 0, 0..SPILLED_SIZE as _);
insert_many_noinline(&mut vec, 0, 0..SPILLED_SIZE as _);
vec
});
}
#[bench]
fn bench_insert_from_slice(b: &mut Bencher) {
let v: Vec<u64> = (0..SPILLED_SIZE as _).collect();
b.iter(|| {
let mut vec = SmallVec::<[u64; VEC_SIZE]>::new();
vec.insert_from_slice(0, &v);
vec.insert_from_slice(0, &v);
vec
});
}
#[bench]
fn bench_macro_from_list(b: &mut Bencher) {
b.iter(|| {
let vec: SmallVec<[u64; 16]> = smallvec![
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20, 24, 32, 36, 0x40, 0x80,
0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000, 0x40000,
0x80000, 0x100000,
];
vec
});
}
#[bench]
fn bench_macro_from_list_vec(b: &mut Bencher) {
b.iter(|| {
let vec: Vec<u64> = vec![
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20, 24, 32, 36, 0x40, 0x80,
0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000, 0x40000,
0x80000, 0x100000,
];
vec
});
}

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## Debugger Visualizers
Many languages and debuggers enable developers to control how a type is
displayed in a debugger. These are called "debugger visualizations" or "debugger
views".
The Windows debuggers (WinDbg\CDB) support defining custom debugger visualizations using
the `Natvis` framework. To use Natvis, developers write XML documents using the natvis
schema that describe how debugger types should be displayed with the `.natvis` extension.
(See: https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2019)
The Natvis files provide patterns which match type names a description of how to display
those types.
The Natvis schema can be found either online (See: https://code.visualstudio.com/docs/cpp/natvis#_schema)
or locally at `<VS Installation Folder>\Xml\Schemas\1033\natvis.xsd`.
The GNU debugger (GDB) supports defining custom debugger views using Pretty Printers.
Pretty printers are written as python scripts that describe how a type should be displayed
when loaded up in GDB/LLDB. (See: https://sourceware.org/gdb/onlinedocs/gdb/Pretty-Printing.html#Pretty-Printing)
The pretty printers provide patterns, which match type names, and for matching
types, describe how to display those types. (For writing a pretty printer, see: https://sourceware.org/gdb/onlinedocs/gdb/Writing-a-Pretty_002dPrinter.html#Writing-a-Pretty_002dPrinter).
### Embedding Visualizers
Through the use of the currently unstable `#[debugger_visualizer]` attribute, the `smallvec`
crate can embed debugger visualizers into the crate metadata.
Currently the two types of visualizers supported are Natvis and Pretty printers.
For Natvis files, when linking an executable with a crate that includes Natvis files,
the MSVC linker will embed the contents of all Natvis files into the generated `PDB`.
For pretty printers, the compiler will encode the contents of the pretty printer
in the `.debug_gdb_scripts` section of the `ELF` generated.
### Testing Visualizers
The `smallvec` crate supports testing debugger visualizers defined for this crate. The entry point for
these tests are `tests/debugger_visualizer.rs`. These tests are defined using the `debugger_test` and
`debugger_test_parser` crates. The `debugger_test` crate is a proc macro crate which defines a
single proc macro attribute, `#[debugger_test]`. For more detailed information about this crate,
see https://crates.io/crates/debugger_test. The CI pipeline for the `smallvec` crate has been updated
to run the debugger visualizer tests to ensure debugger visualizers do not become broken/stale.
The `#[debugger_test]` proc macro attribute may only be used on test functions and will run the
function under the debugger specified by the `debugger` meta item.
This proc macro attribute has 3 required values:
1. The first required meta item, `debugger`, takes a string value which specifies the debugger to launch.
2. The second required meta item, `commands`, takes a string of new line (`\n`) separated list of debugger
commands to run.
3. The third required meta item, `expected_statements`, takes a string of new line (`\n`) separated list of
statements that must exist in the debugger output. Pattern matching through regular expressions is also
supported by using the `pattern:` prefix for each expected statement.
#### Example:
```rust
#[debugger_test(
debugger = "cdb",
commands = "command1\ncommand2\ncommand3",
expected_statements = "statement1\nstatement2\nstatement3")]
fn test() {
}
```
Using a multiline string is also supported, with a single debugger command/expected statement per line:
```rust
#[debugger_test(
debugger = "cdb",
commands = "
command1
command2
command3",
expected_statements = "
statement1
pattern:statement[0-9]+
statement3")]
fn test() {
}
```
In the example above, the second expected statement uses pattern matching through a regular expression
by using the `pattern:` prefix.
#### Testing Locally
Currently, only Natvis visualizations have been defined for the `smallvec` crate via `debug_metadata/smallvec.natvis`,
which means the `tests/debugger_visualizer.rs` tests need to be run on Windows using the `*-pc-windows-msvc` targets.
To run these tests locally, first ensure the debugging tools for Windows are installed or install them following
the steps listed here, [Debugging Tools for Windows](https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/).
Once the debugging tools have been installed, the tests can be run in the same manner as they are in the CI
pipeline.
#### Note
When running the debugger visualizer tests, `tests/debugger_visualizer.rs`, they need to be run consecutively
and not in parallel. This can be achieved by passing the flag `--test-threads=1` to rustc. This is due to
how the debugger tests are run. Each test marked with the `#[debugger_test]` attribute launches a debugger
and attaches it to the current test process. If tests are running in parallel, the test will try to attach
a debugger to the current process which may already have a debugger attached causing the test to fail.
For example:
```
cargo test --test debugger_visualizer --features debugger_visualizer -- --test-threads=1
```

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<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
<Type Name="smallvec::SmallVec&lt;array$&lt;*,*&gt;&gt;" Priority="Medium">
<Intrinsic Name="is_inline" Expression="$T2 &gt;= capacity" />
<Intrinsic Name="len" Expression="is_inline() ? capacity : data.variant1.value.len" />
<Intrinsic Name="data_ptr" Expression="is_inline() ? data.variant0.value.__0.value.value : data.variant1.value.ptr.pointer" />
<DisplayString>{{ len={len()} is_inline={is_inline()} }}</DisplayString>
<Expand>
<Item Name="[capacity]">is_inline() ? $T2 : capacity</Item>
<Item Name="[len]">len()</Item>
<Item Name="[data_ptr]">data_ptr()</Item>
<ArrayItems>
<Size>len()</Size>
<ValuePointer>data_ptr()</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<Type Name="smallvec::SmallVec&lt;array$&lt;*,*&gt;&gt;" Priority="MediumLow">
<Intrinsic Name="is_inline" Expression="$T2 &gt;= capacity" />
<Intrinsic Name="len" Expression="is_inline() ? capacity : data.heap.__1" />
<Intrinsic Name="data_ptr" Expression="is_inline() ? data.inline.value.value.value : data.heap.__0.pointer" />
<DisplayString>{{ len={len()} is_inline={is_inline()} }}</DisplayString>
<Expand>
<Item Name="[capacity]">is_inline() ? $T2 : capacity</Item>
<Item Name="[len]">len()</Item>
<ArrayItems>
<Size>len()</Size>
<ValuePointer>data_ptr()</ValuePointer>
</ArrayItems>
</Expand>
</Type>
</AutoVisualizer>

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#!/usr/bin/bash
set -ex
# Clean out our target dir, which may have artifacts compiled by a version of
# rust different from the one we're about to download.
cargo clean
# Install and run the latest version of nightly where miri built successfully.
# Taken from: https://github.com/rust-lang/miri#running-miri-on-ci
MIRI_NIGHTLY=nightly-$(curl -s https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/miri)
echo "Installing latest nightly with Miri: $MIRI_NIGHTLY"
rustup override unset
rustup default "$MIRI_NIGHTLY"
rustup component add miri
cargo miri setup
cargo miri test --verbose
cargo miri test --verbose --features union
cargo miri test --verbose --all-features
rustup override set nightly

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use crate::{Array, SmallVec};
use arbitrary::{Arbitrary, Unstructured};
impl<'a, A: Array> Arbitrary<'a> for SmallVec<A>
where
<A as Array>::Item: Arbitrary<'a>,
{
fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
u.arbitrary_iter()?.collect()
}
fn arbitrary_take_rest(u: Unstructured<'a>) -> arbitrary::Result<Self> {
u.arbitrary_take_rest_iter()?.collect()
}
fn size_hint(depth: usize) -> (usize, Option<usize>) {
arbitrary::size_hint::and(<usize as Arbitrary>::size_hint(depth), (0, None))
}
}

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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Implementations that require `default fn`.
use super::{Array, SmallVec, SpecFrom};
impl<'a, A: Array> SpecFrom<A, &'a [A::Item]> for SmallVec<A>
where
A::Item: Clone,
{
#[inline]
default fn spec_from(slice: &'a [A::Item]) -> SmallVec<A> {
slice.into_iter().cloned().collect()
}
}

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use debugger_test::debugger_test;
use smallvec::{smallvec, SmallVec};
#[inline(never)]
fn __break() {}
#[debugger_test(
debugger = "cdb",
commands = r#"
.nvlist
dx sv
g
dx sv
g
dx sv
"#,
expected_statements = r#"
sv : { len=0x2 is_inline=true } [Type: smallvec::SmallVec<array$<i32,4> >]
[<Raw View>] [Type: smallvec::SmallVec<array$<i32,4> >]
[capacity] : 4
[len] : 0x2 [Type: unsigned __int64]
[0] : 1 [Type: int]
[1] : 2 [Type: int]
sv : { len=0x5 is_inline=false } [Type: smallvec::SmallVec<array$<i32,4> >]
[<Raw View>] [Type: smallvec::SmallVec<array$<i32,4> >]
[capacity] : 0x8 [Type: unsigned __int64]
[len] : 0x5 [Type: unsigned __int64]
[0] : 5 [Type: int]
[1] : 2 [Type: int]
[2] : 3 [Type: int]
[3] : 4 [Type: int]
[4] : 5 [Type: int]
sv : { len=0x5 is_inline=false } [Type: smallvec::SmallVec<array$<i32,4> >]
[<Raw View>] [Type: smallvec::SmallVec<array$<i32,4> >]
[capacity] : 0x8 [Type: unsigned __int64]
[len] : 0x5 [Type: unsigned __int64]
[0] : 2 [Type: int]
[1] : 3 [Type: int]
[2] : 4 [Type: int]
[3] : 5 [Type: int]
[4] : 5 [Type: int]
"#
)]
#[inline(never)]
fn test_debugger_visualizer() {
// This SmallVec can hold up to 4 items on the stack:
let mut sv: SmallVec<[i32; 4]> = smallvec![1, 2];
__break();
// Overfill the SmallVec to move its contents to the heap
for i in 3..6 {
sv.push(i);
}
// Update the contents of the first value of the SmallVec.
sv[0] = sv[1] + sv[2];
__break();
// Sort the SmallVec in place.
sv.sort();
__break();
}

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/// This file tests `smallvec!` without actually having the macro in scope.
/// This forces any recursion to use a `$crate` prefix to reliably find itself.
#[test]
fn smallvec() {
let mut vec: smallvec::SmallVec<[i32; 2]>;
macro_rules! check {
($init:tt) => {
vec = smallvec::smallvec! $init;
assert_eq!(*vec, *vec! $init);
}
}
check!([0; 0]);
check!([1; 1]);
check!([2; 2]);
check!([3; 3]);
check!([]);
check!([1]);
check!([1, 2]);
check!([1, 2, 3]);
}