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Vendor dependencies for 0.3.0 release

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Robert Garrett
2025-09-27 10:29:08 -05:00
parent 0c8d39d483
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{"files":{"Cargo.toml":"b639e399e32159609ed573ffdb1a4edf06fba8aee208d9259e9dba031834aaaa","LICENSE-APACHE":"62c7a1e35f56406896d7aa7ca52d0cc0d272ac022b5d2796e7d6905db8a3636a","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"cd8f304fa9cca9566dff0bb3492beae55f47f3972ddfb8f1fa38c3da1068b4a8","build.rs":"dba46ae4291317fb644ba2143f44eaf54a8ab946ba1367a33d055d694715f68a","src/attr.rs":"e8301f019e107ef9f5d8a3bbed355ffa9c0fd73396646d7fedbba333d341b7bc","src/error.rs":"be08d9d48b4cb9984b5141b12f21c31bd7293942c18b3ce25754723930cf54f5","src/lib.rs":"12a0578bb1d011ae759a94aa4850e970fc1c74102d1ede62b9f405675d7e182e","src/segment.rs":"462be04eea3ad48028d0841e8000c13205eb049522b8003bcc2926f21e93cb78","tests/compiletest.rs":"022a8e400ef813d7ea1875b944549cee5125f6a995dc33e93b48cba3e1b57bd1","tests/test_attr.rs":"39a55dcce5a127b2f85e9127a810b4aa3318e408cac93ff678301a2120aac5b5","tests/test_doc.rs":"7afb22427cb1c54fcf75a581fec5503404d8e93274027040b4d901f8caa597bb","tests/test_expr.rs":"d25ff118a78bd8e7d38ff532f0b9abb046bd0fbe61db8080b973bff67743af4e","tests/test_item.rs":"ee373a6658b384d1b2a0053653ac18e19d4053bbd04c8024980340894c04dcdc","tests/ui/case-warning.rs":"6b7cb803527911fe698e7fbe080160bc5d07c0da36fac0ec29d599753ce8bd10","tests/ui/case-warning.stderr":"7b7d470edc2a11b0864534099b360e0c42d423e068f49cea7858e0b340c2ef3d","tests/ui/env-empty.rs":"093fb0844475f4710580b5e4cad162918896d4fb48d1516bae04eb39dddd265a","tests/ui/env-empty.stderr":"3462f06f6f21130a81efff3be3bc838b395f6107bfbf753e479ec5a60e09b15d","tests/ui/env-non-string.rs":"516460860e7790b412b0fcd203289720a155dfba2498616967e4d7e6e6ab4990","tests/ui/env-non-string.stderr":"fea08d588a238e0f4c06de5c5ae97ac195bb2bcfc070040fb8087bdf4d1f4eee","tests/ui/env-suffix.rs":"0f1756608efc7a6c5810b8b21528092546ac95371e048c6060064e747c1b0a27","tests/ui/env-suffix.stderr":"287fecb2a91abc61501e0bd71d7f111670a526960ab18a554f4d16ed83d940b5","tests/ui/env-unexpected.rs":"18f06317e72ea16dae6ebe7c20bf5ef26b46e01a5c54fd31dc2a351ba68e8ca5","tests/ui/env-unexpected.stderr":"14d9a40160daf0191efc2b53be5fdde5b066674053e76af170e58af08f4022aa","tests/ui/invalid-ident.rs":"c3f375cac04d56684e427834076128b6e77eeeb9e99067a06307e27693b0ff51","tests/ui/invalid-ident.stderr":"b56d1c26253dec71ba1f97ffa01602b3a4429fc85a6b5c87f5290aab0568ea30","tests/ui/missing-paren-on-env.rs":"05cafef972e8c99f82834e164e7713f6056ac1a24b1f31d0320ac4fe361a53bd","tests/ui/missing-paren-on-env.stderr":"baf7b420d201f033e2113eaebd85376047397d991c35c441f07e5c6f1ec2b685","tests/ui/no-env-var.rs":"330bb71f2f3d98d23176acc5aeb1c0b66443af14c0857bb5bc92bfd130eb4a62","tests/ui/no-env-var.stderr":"68af072d3ccb2537bca9a5cd6d5796bb5ab5408f59564c8e8c66b1590ac7c5a5","tests/ui/no-ident-after-colon.rs":"a5af9548ab8d7f5b6130e1410c90f2cc589c595eb99f6939e6deb3f54e7262a2","tests/ui/no-ident-after-colon.stderr":"efac036a78f077c9c10a1ed048d69531293dcb97784ed784af0b24788ecbab54","tests/ui/unexpected-group.rs":"6b2e398a9ad3e077ea49c68b7c134ec3268e398723f4d9d5ef7b4d7b8513ac44","tests/ui/unexpected-group.stderr":"1260b5a4c295639958e3dd0da475c385184f0a916f5fdc4f1f2bfe232688f43c","tests/ui/unexpected-modifier.rs":"8b7e4c93f06fe7e7be469375e8bbaf19fec5fdffe688a0c29d2de2944a420337","tests/ui/unexpected-modifier.stderr":"581212b89358ac6bd38632bfd4322c25c171046875711fd639cfb498e01629c8","tests/ui/unexpected-punct.rs":"430e98bc03abdcc46f72cea01264c278a9c25f3d1d63064a6d78f4ae71b6a2d9","tests/ui/unexpected-punct.stderr":"24ab2e32d2da8dad93ef04dc05a2ecf6fdeb11bdebeae9454ad4759cc2b16551","tests/ui/unsupported-literal.rs":"1b2d3634fba5dc35d5ac9012d488aa93e329d1fa4489df1eadee65613a010e59","tests/ui/unsupported-literal.stderr":"6b137ccd6bc2a341aeb1e0d5321a896aa6c8db9a4e2571f4e41bd744511760bf","tests/ui/unsupported-modifier.rs":"03bb0239880070e8b470a6072c06094e1483ea91256e7cb4b9f2e8761696fa5a","tests/ui/unsupported-modifier.stderr":"890d7f484fdbd46da72923db4d7aba0ac3eaece253bb7195b7a36ae9a918027e"},"package":"57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"}

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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"
rust-version = "1.31"
name = "paste"
version = "1.0.15"
authors = ["David Tolnay <dtolnay@gmail.com>"]
build = "build.rs"
autobins = false
autoexamples = false
autotests = false
autobenches = false
description = "Macros for all your token pasting needs"
documentation = "https://docs.rs/paste"
readme = "README.md"
keywords = ["macros"]
categories = [
"development-tools",
"no-std",
"no-std::no-alloc",
]
license = "MIT OR Apache-2.0"
repository = "https://github.com/dtolnay/paste"
[package.metadata.docs.rs]
rustdoc-args = ["--generate-link-to-definition"]
targets = ["x86_64-unknown-linux-gnu"]
[lib]
name = "paste"
path = "src/lib.rs"
proc-macro = true
[[test]]
name = "test_item"
path = "tests/test_item.rs"
[[test]]
name = "test_attr"
path = "tests/test_attr.rs"
[[test]]
name = "compiletest"
path = "tests/compiletest.rs"
[[test]]
name = "test_doc"
path = "tests/test_doc.rs"
[[test]]
name = "test_expr"
path = "tests/test_expr.rs"
[dev-dependencies.paste-test-suite]
version = "0"
[dev-dependencies.rustversion]
version = "1.0"
[dev-dependencies.trybuild]
version = "1.0.49"
features = ["diff"]

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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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,
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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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Macros for all your token pasting needs
=======================================
[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/paste-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/paste)
[<img alt="crates.io" src="https://img.shields.io/crates/v/paste.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/paste)
[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-paste-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/paste)
[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/paste/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/paste/actions?query=branch%3Amaster)
The nightly-only [`concat_idents!`] macro in the Rust standard library is
notoriously underpowered in that its concatenated identifiers can only refer to
existing items, they can never be used to define something new.
[`concat_idents!`]: https://doc.rust-lang.org/std/macro.concat_idents.html
This crate provides a flexible way to paste together identifiers in a macro,
including using pasted identifiers to define new items.
```toml
[dependencies]
paste = "1.0"
```
This approach works with any Rust compiler 1.31+.
<br>
## Pasting identifiers
Within the `paste!` macro, identifiers inside `[<`...`>]` are pasted together to
form a single identifier.
```rust
use paste::paste;
paste! {
// Defines a const called `QRST`.
const [<Q R S T>]: &str = "success!";
}
fn main() {
assert_eq!(
paste! { [<Q R S T>].len() },
8,
);
}
```
<br>
## More elaborate example
The next example shows a macro that generates accessor methods for some struct
fields. It demonstrates how you might find it useful to bundle a paste
invocation inside of a macro\_rules macro.
```rust
use paste::paste;
macro_rules! make_a_struct_and_getters {
($name:ident { $($field:ident),* }) => {
// Define a struct. This expands to:
//
// pub struct S {
// a: String,
// b: String,
// c: String,
// }
pub struct $name {
$(
$field: String,
)*
}
// Build an impl block with getters. This expands to:
//
// impl S {
// pub fn get_a(&self) -> &str { &self.a }
// pub fn get_b(&self) -> &str { &self.b }
// pub fn get_c(&self) -> &str { &self.c }
// }
paste! {
impl $name {
$(
pub fn [<get_ $field>](&self) -> &str {
&self.$field
}
)*
}
}
}
}
make_a_struct_and_getters!(S { a, b, c });
fn call_some_getters(s: &S) -> bool {
s.get_a() == s.get_b() && s.get_c().is_empty()
}
```
<br>
## Case conversion
Use `$var:lower` or `$var:upper` in the segment list to convert an interpolated
segment to lower- or uppercase as part of the paste. For example, `[<ld_
$reg:lower _expr>]` would paste to `ld_bc_expr` if invoked with $reg=`Bc`.
Use `$var:snake` to convert CamelCase input to snake\_case.
Use `$var:camel` to convert snake\_case to CamelCase.
These compose, so for example `$var:snake:upper` would give you SCREAMING\_CASE.
The precise Unicode conversions are as defined by [`str::to_lowercase`] and
[`str::to_uppercase`].
[`str::to_lowercase`]: https://doc.rust-lang.org/std/primitive.str.html#method.to_lowercase
[`str::to_uppercase`]: https://doc.rust-lang.org/std/primitive.str.html#method.to_uppercase
<br>
## Pasting documentation strings
Within the `paste!` macro, arguments to a #\[doc ...\] attribute are implicitly
concatenated together to form a coherent documentation string.
```rust
use paste::paste;
macro_rules! method_new {
($ret:ident) => {
paste! {
#[doc = "Create a new `" $ret "` object."]
pub fn new() -> $ret { todo!() }
}
};
}
pub struct Paste {}
method_new!(Paste); // expands to #[doc = "Create a new `Paste` object"]
```
<br>
#### License
<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>
<br>
<sub>
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
</sub>

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use std::env;
use std::process::Command;
use std::str;
fn main() {
println!("cargo:rerun-if-changed=build.rs");
let version = match rustc_version() {
Some(version) => version,
None => return,
};
if version.minor >= 80 {
println!("cargo:rustc-check-cfg=cfg(no_literal_fromstr)");
println!("cargo:rustc-check-cfg=cfg(feature, values(\"protocol_feature_paste\"))");
}
if version.minor < 54 {
// https://github.com/rust-lang/rust/pull/84717
println!("cargo:rustc-cfg=no_literal_fromstr");
}
}
struct RustcVersion {
minor: u32,
}
fn rustc_version() -> Option<RustcVersion> {
let rustc = env::var_os("RUSTC")?;
let output = Command::new(rustc).arg("--version").output().ok()?;
let version = str::from_utf8(&output.stdout).ok()?;
let mut pieces = version.split('.');
if pieces.next() != Some("rustc 1") {
return None;
}
let minor = pieces.next()?.parse().ok()?;
Some(RustcVersion { minor })
}

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use crate::error::Result;
use crate::segment::{self, Segment};
use proc_macro::{Delimiter, Group, Spacing, Span, TokenStream, TokenTree};
use std::iter;
use std::mem;
use std::str::FromStr;
pub fn expand_attr(
attr: TokenStream,
span: Span,
contains_paste: &mut bool,
) -> Result<TokenStream> {
let mut tokens = attr.clone().into_iter();
let mut leading_colons = 0; // $(::)?
let mut leading_path = 0; // $($ident)::+
let mut token;
let group = loop {
token = tokens.next();
match token {
// colon after `$(:)?`
Some(TokenTree::Punct(ref punct))
if punct.as_char() == ':' && leading_colons < 2 && leading_path == 0 =>
{
leading_colons += 1;
}
// ident after `$(::)? $($ident ::)*`
Some(TokenTree::Ident(_)) if leading_colons != 1 && leading_path % 3 == 0 => {
leading_path += 1;
}
// colon after `$(::)? $($ident ::)* $ident $(:)?`
Some(TokenTree::Punct(ref punct)) if punct.as_char() == ':' && leading_path % 3 > 0 => {
leading_path += 1;
}
// eq+value after `$(::)? $($ident)::+`
Some(TokenTree::Punct(ref punct))
if punct.as_char() == '=' && leading_path % 3 == 1 =>
{
let mut count = 0;
if tokens.inspect(|_| count += 1).all(|tt| is_stringlike(&tt)) && count > 1 {
*contains_paste = true;
let leading = leading_colons + leading_path;
return do_paste_name_value_attr(attr, span, leading);
}
return Ok(attr);
}
// parens after `$(::)? $($ident)::+`
Some(TokenTree::Group(ref group))
if group.delimiter() == Delimiter::Parenthesis && leading_path % 3 == 1 =>
{
break group;
}
// bail out
_ => return Ok(attr),
}
};
// There can't be anything else after the first group in a valid attribute.
if tokens.next().is_some() {
return Ok(attr);
}
let mut group_contains_paste = false;
let mut expanded = TokenStream::new();
let mut nested_attr = TokenStream::new();
for tt in group.stream() {
match &tt {
TokenTree::Punct(punct) if punct.as_char() == ',' => {
expanded.extend(expand_attr(
nested_attr,
group.span(),
&mut group_contains_paste,
)?);
expanded.extend(iter::once(tt));
nested_attr = TokenStream::new();
}
_ => nested_attr.extend(iter::once(tt)),
}
}
if !nested_attr.is_empty() {
expanded.extend(expand_attr(
nested_attr,
group.span(),
&mut group_contains_paste,
)?);
}
if group_contains_paste {
*contains_paste = true;
let mut group = Group::new(Delimiter::Parenthesis, expanded);
group.set_span(span);
Ok(attr
.into_iter()
// Just keep the initial ident in `#[ident(...)]`.
.take(leading_colons + leading_path)
.chain(iter::once(TokenTree::Group(group)))
.collect())
} else {
Ok(attr)
}
}
fn do_paste_name_value_attr(attr: TokenStream, span: Span, leading: usize) -> Result<TokenStream> {
let mut expanded = TokenStream::new();
let mut tokens = attr.into_iter().peekable();
expanded.extend(tokens.by_ref().take(leading + 1)); // `doc =`
let mut segments = segment::parse(&mut tokens)?;
for segment in &mut segments {
if let Segment::String(string) = segment {
if let Some(open_quote) = string.value.find('"') {
if open_quote == 0 {
string.value.truncate(string.value.len() - 1);
string.value.remove(0);
} else {
let begin = open_quote + 1;
let end = string.value.rfind('"').unwrap();
let raw_string = mem::replace(&mut string.value, String::new());
for ch in raw_string[begin..end].chars() {
string.value.extend(ch.escape_default());
}
}
}
}
}
let mut lit = segment::paste(&segments)?;
lit.insert(0, '"');
lit.push('"');
let mut lit = TokenStream::from_str(&lit)
.unwrap()
.into_iter()
.next()
.unwrap();
lit.set_span(span);
expanded.extend(iter::once(lit));
Ok(expanded)
}
fn is_stringlike(token: &TokenTree) -> bool {
match token {
TokenTree::Ident(_) => true,
TokenTree::Literal(literal) => {
let repr = literal.to_string();
!repr.starts_with('b') && !repr.starts_with('\'')
}
TokenTree::Group(group) => {
if group.delimiter() != Delimiter::None {
return false;
}
let mut inner = group.stream().into_iter();
match inner.next() {
Some(first) => inner.next().is_none() && is_stringlike(&first),
None => false,
}
}
TokenTree::Punct(punct) => {
punct.as_char() == '\'' || punct.as_char() == ':' && punct.spacing() == Spacing::Alone
}
}
}

47
vendor/paste/src/error.rs vendored Normal file
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use proc_macro::{Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
use std::iter::FromIterator;
pub type Result<T> = std::result::Result<T, Error>;
pub struct Error {
begin: Span,
end: Span,
msg: String,
}
impl Error {
pub fn new(span: Span, msg: &str) -> Self {
Self::new2(span, span, msg)
}
pub fn new2(begin: Span, end: Span, msg: &str) -> Self {
Error {
begin,
end,
msg: msg.to_owned(),
}
}
pub fn to_compile_error(&self) -> TokenStream {
// compile_error! { $msg }
TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("compile_error", self.begin)),
TokenTree::Punct({
let mut punct = Punct::new('!', Spacing::Alone);
punct.set_span(self.begin);
punct
}),
TokenTree::Group({
let mut group = Group::new(Delimiter::Brace, {
TokenStream::from_iter(vec![TokenTree::Literal({
let mut string = Literal::string(&self.msg);
string.set_span(self.end);
string
})])
});
group.set_span(self.end);
group
}),
])
}
}

454
vendor/paste/src/lib.rs vendored Normal file
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//! [![github]](https://github.com/dtolnay/paste)&ensp;[![crates-io]](https://crates.io/crates/paste)&ensp;[![docs-rs]](https://docs.rs/paste)
//!
//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
//!
//! <br>
//!
//! The nightly-only [`concat_idents!`] macro in the Rust standard library is
//! notoriously underpowered in that its concatenated identifiers can only refer to
//! existing items, they can never be used to define something new.
//!
//! [`concat_idents!`]: https://doc.rust-lang.org/std/macro.concat_idents.html
//!
//! This crate provides a flexible way to paste together identifiers in a macro,
//! including using pasted identifiers to define new items.
//!
//! This approach works with any Rust compiler 1.31+.
//!
//! <br>
//!
//! # Pasting identifiers
//!
//! Within the `paste!` macro, identifiers inside `[<`...`>]` are pasted
//! together to form a single identifier.
//!
//! ```
//! use paste::paste;
//!
//! paste! {
//! // Defines a const called `QRST`.
//! const [<Q R S T>]: &str = "success!";
//! }
//!
//! fn main() {
//! assert_eq!(
//! paste! { [<Q R S T>].len() },
//! 8,
//! );
//! }
//! ```
//!
//! <br><br>
//!
//! # More elaborate example
//!
//! The next example shows a macro that generates accessor methods for some
//! struct fields. It demonstrates how you might find it useful to bundle a
//! paste invocation inside of a macro\_rules macro.
//!
//! ```
//! use paste::paste;
//!
//! macro_rules! make_a_struct_and_getters {
//! ($name:ident { $($field:ident),* }) => {
//! // Define a struct. This expands to:
//! //
//! // pub struct S {
//! // a: String,
//! // b: String,
//! // c: String,
//! // }
//! pub struct $name {
//! $(
//! $field: String,
//! )*
//! }
//!
//! // Build an impl block with getters. This expands to:
//! //
//! // impl S {
//! // pub fn get_a(&self) -> &str { &self.a }
//! // pub fn get_b(&self) -> &str { &self.b }
//! // pub fn get_c(&self) -> &str { &self.c }
//! // }
//! paste! {
//! impl $name {
//! $(
//! pub fn [<get_ $field>](&self) -> &str {
//! &self.$field
//! }
//! )*
//! }
//! }
//! }
//! }
//!
//! make_a_struct_and_getters!(S { a, b, c });
//!
//! fn call_some_getters(s: &S) -> bool {
//! s.get_a() == s.get_b() && s.get_c().is_empty()
//! }
//! #
//! # fn main() {}
//! ```
//!
//! <br><br>
//!
//! # Case conversion
//!
//! Use `$var:lower` or `$var:upper` in the segment list to convert an
//! interpolated segment to lower- or uppercase as part of the paste. For
//! example, `[<ld_ $reg:lower _expr>]` would paste to `ld_bc_expr` if invoked
//! with $reg=`Bc`.
//!
//! Use `$var:snake` to convert CamelCase input to snake\_case.
//! Use `$var:camel` to convert snake\_case to CamelCase.
//! These compose, so for example `$var:snake:upper` would give you SCREAMING\_CASE.
//!
//! The precise Unicode conversions are as defined by [`str::to_lowercase`] and
//! [`str::to_uppercase`].
//!
//! [`str::to_lowercase`]: https://doc.rust-lang.org/std/primitive.str.html#method.to_lowercase
//! [`str::to_uppercase`]: https://doc.rust-lang.org/std/primitive.str.html#method.to_uppercase
//!
//! <br>
//!
//! # Pasting documentation strings
//!
//! Within the `paste!` macro, arguments to a #\[doc ...\] attribute are
//! implicitly concatenated together to form a coherent documentation string.
//!
//! ```
//! use paste::paste;
//!
//! macro_rules! method_new {
//! ($ret:ident) => {
//! paste! {
//! #[doc = "Create a new `" $ret "` object."]
//! pub fn new() -> $ret { todo!() }
//! }
//! };
//! }
//!
//! pub struct Paste {}
//!
//! method_new!(Paste); // expands to #[doc = "Create a new `Paste` object"]
//! ```
#![doc(html_root_url = "https://docs.rs/paste/1.0.15")]
#![allow(
clippy::derive_partial_eq_without_eq,
clippy::doc_markdown,
clippy::match_same_arms,
clippy::module_name_repetitions,
clippy::needless_doctest_main,
clippy::too_many_lines
)]
extern crate proc_macro;
mod attr;
mod error;
mod segment;
use crate::attr::expand_attr;
use crate::error::{Error, Result};
use crate::segment::Segment;
use proc_macro::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
use std::char;
use std::iter;
use std::panic;
#[proc_macro]
pub fn paste(input: TokenStream) -> TokenStream {
let mut contains_paste = false;
let flatten_single_interpolation = true;
match expand(
input.clone(),
&mut contains_paste,
flatten_single_interpolation,
) {
Ok(expanded) => {
if contains_paste {
expanded
} else {
input
}
}
Err(err) => err.to_compile_error(),
}
}
#[doc(hidden)]
#[proc_macro]
pub fn item(input: TokenStream) -> TokenStream {
paste(input)
}
#[doc(hidden)]
#[proc_macro]
pub fn expr(input: TokenStream) -> TokenStream {
paste(input)
}
fn expand(
input: TokenStream,
contains_paste: &mut bool,
flatten_single_interpolation: bool,
) -> Result<TokenStream> {
let mut expanded = TokenStream::new();
let mut lookbehind = Lookbehind::Other;
let mut prev_none_group = None::<Group>;
let mut tokens = input.into_iter().peekable();
loop {
let token = tokens.next();
if let Some(group) = prev_none_group.take() {
if match (&token, tokens.peek()) {
(Some(TokenTree::Punct(fst)), Some(TokenTree::Punct(snd))) => {
fst.as_char() == ':' && snd.as_char() == ':' && fst.spacing() == Spacing::Joint
}
_ => false,
} {
expanded.extend(group.stream());
*contains_paste = true;
} else {
expanded.extend(iter::once(TokenTree::Group(group)));
}
}
match token {
Some(TokenTree::Group(group)) => {
let delimiter = group.delimiter();
let content = group.stream();
let span = group.span();
if delimiter == Delimiter::Bracket && is_paste_operation(&content) {
let segments = parse_bracket_as_segments(content, span)?;
let pasted = segment::paste(&segments)?;
let tokens = pasted_to_tokens(pasted, span)?;
expanded.extend(tokens);
*contains_paste = true;
} else if flatten_single_interpolation
&& delimiter == Delimiter::None
&& is_single_interpolation_group(&content)
{
expanded.extend(content);
*contains_paste = true;
} else {
let mut group_contains_paste = false;
let is_attribute = delimiter == Delimiter::Bracket
&& (lookbehind == Lookbehind::Pound || lookbehind == Lookbehind::PoundBang);
let mut nested = expand(
content,
&mut group_contains_paste,
flatten_single_interpolation && !is_attribute,
)?;
if is_attribute {
nested = expand_attr(nested, span, &mut group_contains_paste)?;
}
let group = if group_contains_paste {
let mut group = Group::new(delimiter, nested);
group.set_span(span);
*contains_paste = true;
group
} else {
group.clone()
};
if delimiter != Delimiter::None {
expanded.extend(iter::once(TokenTree::Group(group)));
} else if lookbehind == Lookbehind::DoubleColon {
expanded.extend(group.stream());
*contains_paste = true;
} else {
prev_none_group = Some(group);
}
}
lookbehind = Lookbehind::Other;
}
Some(TokenTree::Punct(punct)) => {
lookbehind = match punct.as_char() {
':' if lookbehind == Lookbehind::JointColon => Lookbehind::DoubleColon,
':' if punct.spacing() == Spacing::Joint => Lookbehind::JointColon,
'#' => Lookbehind::Pound,
'!' if lookbehind == Lookbehind::Pound => Lookbehind::PoundBang,
_ => Lookbehind::Other,
};
expanded.extend(iter::once(TokenTree::Punct(punct)));
}
Some(other) => {
lookbehind = Lookbehind::Other;
expanded.extend(iter::once(other));
}
None => return Ok(expanded),
}
}
}
#[derive(PartialEq)]
enum Lookbehind {
JointColon,
DoubleColon,
Pound,
PoundBang,
Other,
}
// https://github.com/dtolnay/paste/issues/26
fn is_single_interpolation_group(input: &TokenStream) -> bool {
#[derive(PartialEq)]
enum State {
Init,
Ident,
Literal,
Apostrophe,
Lifetime,
Colon1,
Colon2,
}
let mut state = State::Init;
for tt in input.clone() {
state = match (state, &tt) {
(State::Init, TokenTree::Ident(_)) => State::Ident,
(State::Init, TokenTree::Literal(_)) => State::Literal,
(State::Init, TokenTree::Punct(punct)) if punct.as_char() == '\'' => State::Apostrophe,
(State::Apostrophe, TokenTree::Ident(_)) => State::Lifetime,
(State::Ident, TokenTree::Punct(punct))
if punct.as_char() == ':' && punct.spacing() == Spacing::Joint =>
{
State::Colon1
}
(State::Colon1, TokenTree::Punct(punct))
if punct.as_char() == ':' && punct.spacing() == Spacing::Alone =>
{
State::Colon2
}
(State::Colon2, TokenTree::Ident(_)) => State::Ident,
_ => return false,
};
}
state == State::Ident || state == State::Literal || state == State::Lifetime
}
fn is_paste_operation(input: &TokenStream) -> bool {
let mut tokens = input.clone().into_iter();
match &tokens.next() {
Some(TokenTree::Punct(punct)) if punct.as_char() == '<' => {}
_ => return false,
}
let mut has_token = false;
loop {
match &tokens.next() {
Some(TokenTree::Punct(punct)) if punct.as_char() == '>' => {
return has_token && tokens.next().is_none();
}
Some(_) => has_token = true,
None => return false,
}
}
}
fn parse_bracket_as_segments(input: TokenStream, scope: Span) -> Result<Vec<Segment>> {
let mut tokens = input.into_iter().peekable();
match &tokens.next() {
Some(TokenTree::Punct(punct)) if punct.as_char() == '<' => {}
Some(wrong) => return Err(Error::new(wrong.span(), "expected `<`")),
None => return Err(Error::new(scope, "expected `[< ... >]`")),
}
let mut segments = segment::parse(&mut tokens)?;
match &tokens.next() {
Some(TokenTree::Punct(punct)) if punct.as_char() == '>' => {}
Some(wrong) => return Err(Error::new(wrong.span(), "expected `>`")),
None => return Err(Error::new(scope, "expected `[< ... >]`")),
}
if let Some(unexpected) = tokens.next() {
return Err(Error::new(
unexpected.span(),
"unexpected input, expected `[< ... >]`",
));
}
for segment in &mut segments {
if let Segment::String(string) = segment {
if string.value.starts_with("'\\u{") {
let hex = &string.value[4..string.value.len() - 2];
if let Ok(unsigned) = u32::from_str_radix(hex, 16) {
if let Some(ch) = char::from_u32(unsigned) {
string.value.clear();
string.value.push(ch);
continue;
}
}
}
if string.value.contains(&['#', '\\', '.', '+'][..])
|| string.value.starts_with("b'")
|| string.value.starts_with("b\"")
|| string.value.starts_with("br\"")
{
return Err(Error::new(string.span, "unsupported literal"));
}
let mut range = 0..string.value.len();
if string.value.starts_with("r\"") {
range.start += 2;
range.end -= 1;
} else if string.value.starts_with(&['"', '\''][..]) {
range.start += 1;
range.end -= 1;
}
string.value = string.value[range].replace('-', "_");
}
}
Ok(segments)
}
fn pasted_to_tokens(mut pasted: String, span: Span) -> Result<TokenStream> {
let mut tokens = TokenStream::new();
#[cfg(not(no_literal_fromstr))]
{
use proc_macro::{LexError, Literal};
use std::str::FromStr;
if pasted.starts_with(|ch: char| ch.is_ascii_digit()) {
let literal = match panic::catch_unwind(|| Literal::from_str(&pasted)) {
Ok(Ok(literal)) => TokenTree::Literal(literal),
Ok(Err(LexError { .. })) | Err(_) => {
return Err(Error::new(
span,
&format!("`{:?}` is not a valid literal", pasted),
));
}
};
tokens.extend(iter::once(literal));
return Ok(tokens);
}
}
if pasted.starts_with('\'') {
let mut apostrophe = TokenTree::Punct(Punct::new('\'', Spacing::Joint));
apostrophe.set_span(span);
tokens.extend(iter::once(apostrophe));
pasted.remove(0);
}
let ident = match panic::catch_unwind(|| Ident::new(&pasted, span)) {
Ok(ident) => TokenTree::Ident(ident),
Err(_) => {
return Err(Error::new(
span,
&format!("`{:?}` is not a valid identifier", pasted),
));
}
};
tokens.extend(iter::once(ident));
Ok(tokens)
}

233
vendor/paste/src/segment.rs vendored Normal file
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use crate::error::{Error, Result};
use proc_macro::{token_stream, Delimiter, Ident, Span, TokenTree};
use std::iter::Peekable;
pub(crate) enum Segment {
String(LitStr),
Apostrophe(Span),
Env(LitStr),
Modifier(Colon, Ident),
}
pub(crate) struct LitStr {
pub value: String,
pub span: Span,
}
pub(crate) struct Colon {
pub span: Span,
}
pub(crate) fn parse(tokens: &mut Peekable<token_stream::IntoIter>) -> Result<Vec<Segment>> {
let mut segments = Vec::new();
while match tokens.peek() {
None => false,
Some(TokenTree::Punct(punct)) => punct.as_char() != '>',
Some(_) => true,
} {
match tokens.next().unwrap() {
TokenTree::Ident(ident) => {
let mut fragment = ident.to_string();
if fragment.starts_with("r#") {
fragment = fragment.split_off(2);
}
if fragment == "env"
&& match tokens.peek() {
Some(TokenTree::Punct(punct)) => punct.as_char() == '!',
_ => false,
}
{
let bang = tokens.next().unwrap(); // `!`
let expect_group = tokens.next();
let parenthesized = match &expect_group {
Some(TokenTree::Group(group))
if group.delimiter() == Delimiter::Parenthesis =>
{
group
}
Some(wrong) => return Err(Error::new(wrong.span(), "expected `(`")),
None => {
return Err(Error::new2(
ident.span(),
bang.span(),
"expected `(` after `env!`",
));
}
};
let mut inner = parenthesized.stream().into_iter();
let lit = match inner.next() {
Some(TokenTree::Literal(lit)) => lit,
Some(wrong) => {
return Err(Error::new(wrong.span(), "expected string literal"))
}
None => {
return Err(Error::new2(
ident.span(),
parenthesized.span(),
"expected string literal as argument to env! macro",
))
}
};
let lit_string = lit.to_string();
if lit_string.starts_with('"')
&& lit_string.ends_with('"')
&& lit_string.len() >= 2
{
// TODO: maybe handle escape sequences in the string if
// someone has a use case.
segments.push(Segment::Env(LitStr {
value: lit_string[1..lit_string.len() - 1].to_owned(),
span: lit.span(),
}));
} else {
return Err(Error::new(lit.span(), "expected string literal"));
}
if let Some(unexpected) = inner.next() {
return Err(Error::new(
unexpected.span(),
"unexpected token in env! macro",
));
}
} else {
segments.push(Segment::String(LitStr {
value: fragment,
span: ident.span(),
}));
}
}
TokenTree::Literal(lit) => {
segments.push(Segment::String(LitStr {
value: lit.to_string(),
span: lit.span(),
}));
}
TokenTree::Punct(punct) => match punct.as_char() {
'_' => segments.push(Segment::String(LitStr {
value: "_".to_owned(),
span: punct.span(),
})),
'\'' => segments.push(Segment::Apostrophe(punct.span())),
':' => {
let colon_span = punct.span();
let colon = Colon { span: colon_span };
let ident = match tokens.next() {
Some(TokenTree::Ident(ident)) => ident,
wrong => {
let span = wrong.as_ref().map_or(colon_span, TokenTree::span);
return Err(Error::new(span, "expected identifier after `:`"));
}
};
segments.push(Segment::Modifier(colon, ident));
}
_ => return Err(Error::new(punct.span(), "unexpected punct")),
},
TokenTree::Group(group) => {
if group.delimiter() == Delimiter::None {
let mut inner = group.stream().into_iter().peekable();
let nested = parse(&mut inner)?;
if let Some(unexpected) = inner.next() {
return Err(Error::new(unexpected.span(), "unexpected token"));
}
segments.extend(nested);
} else {
return Err(Error::new(group.span(), "unexpected token"));
}
}
}
}
Ok(segments)
}
pub(crate) fn paste(segments: &[Segment]) -> Result<String> {
let mut evaluated = Vec::new();
let mut is_lifetime = false;
for segment in segments {
match segment {
Segment::String(segment) => {
evaluated.push(segment.value.clone());
}
Segment::Apostrophe(span) => {
if is_lifetime {
return Err(Error::new(*span, "unexpected lifetime"));
}
is_lifetime = true;
}
Segment::Env(var) => {
let resolved = match std::env::var(&var.value) {
Ok(resolved) => resolved,
Err(_) => {
return Err(Error::new(
var.span,
&format!("no such env var: {:?}", var.value),
));
}
};
let resolved = resolved.replace('-', "_");
evaluated.push(resolved);
}
Segment::Modifier(colon, ident) => {
let last = match evaluated.pop() {
Some(last) => last,
None => {
return Err(Error::new2(colon.span, ident.span(), "unexpected modifier"))
}
};
match ident.to_string().as_str() {
"lower" => {
evaluated.push(last.to_lowercase());
}
"upper" => {
evaluated.push(last.to_uppercase());
}
"snake" => {
let mut acc = String::new();
let mut prev = '_';
for ch in last.chars() {
if ch.is_uppercase() && prev != '_' {
acc.push('_');
}
acc.push(ch);
prev = ch;
}
evaluated.push(acc.to_lowercase());
}
"camel" => {
let mut acc = String::new();
let mut prev = '_';
for ch in last.chars() {
if ch != '_' {
if prev == '_' {
for chu in ch.to_uppercase() {
acc.push(chu);
}
} else if prev.is_uppercase() {
for chl in ch.to_lowercase() {
acc.push(chl);
}
} else {
acc.push(ch);
}
}
prev = ch;
}
evaluated.push(acc);
}
_ => {
return Err(Error::new2(
colon.span,
ident.span(),
"unsupported modifier",
));
}
}
}
}
}
let mut pasted = evaluated.into_iter().collect::<String>();
if is_lifetime {
pasted.insert(0, '\'');
}
Ok(pasted)
}

7
vendor/paste/tests/compiletest.rs vendored Normal file
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@@ -0,0 +1,7 @@
#[rustversion::attr(not(nightly), ignore)]
#[cfg_attr(miri, ignore)]
#[test]
fn ui() {
let t = trybuild::TestCases::new();
t.compile_fail("tests/ui/*.rs");
}

62
vendor/paste/tests/test_attr.rs vendored Normal file
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@@ -0,0 +1,62 @@
#![allow(clippy::let_underscore_untyped)]
use paste::paste;
use paste_test_suite::paste_test;
#[test]
fn test_attr() {
paste! {
#[paste_test(k = "val" "ue")]
struct A;
#[paste_test_suite::paste_test(k = "val" "ue")]
struct B;
#[::paste_test_suite::paste_test(k = "val" "ue")]
struct C;
#[paste_test(k = "va" [<l u>] e)]
struct D;
}
let _ = A;
let _ = B;
let _ = C;
let _ = D;
}
#[test]
fn test_paste_cfg() {
macro_rules! m {
($ret:ident, $width:expr) => {
paste! {
#[cfg(any(feature = "protocol_feature_" $ret:snake, target_pointer_width = "" $width))]
fn new() -> $ret { todo!() }
}
};
}
struct Paste;
#[cfg(target_pointer_width = "64")]
m!(Paste, 64);
#[cfg(target_pointer_width = "32")]
m!(Paste, 32);
let _ = new;
}
#[test]
fn test_path_in_attr() {
macro_rules! m {
(#[x = $x:ty]) => {
stringify!($x)
};
}
let ty = paste! {
m!(#[x = foo::Bar])
};
assert_eq!("foo::Bar", ty);
}

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#![allow(clippy::let_underscore_untyped)]
use paste::paste;
#[test]
fn test_paste_doc() {
macro_rules! m {
($ret:ident) => {
paste! {
#[doc = "Create a new [`" $ret "`] object."]
fn new() -> $ret { todo!() }
}
};
}
struct Paste;
m!(Paste);
let _ = new;
}
macro_rules! get_doc {
(#[doc = $literal:tt]) => {
$literal
};
}
#[test]
fn test_escaping() {
let doc = paste! {
get_doc!(#[doc = "s\"" r#"r#""#])
};
let expected = "s\"r#\"";
assert_eq!(doc, expected);
}
#[test]
fn test_literals() {
let doc = paste! {
get_doc!(#[doc = "int=" 0x1 " bool=" true " float=" 0.01])
};
let expected = "int=0x1 bool=true float=0.01";
assert_eq!(doc, expected);
}
#[test]
fn test_case() {
let doc = paste! {
get_doc!(#[doc = "HTTP " get:upper "!"])
};
let expected = "HTTP GET!";
assert_eq!(doc, expected);
}
// https://github.com/dtolnay/paste/issues/63
#[test]
fn test_stringify() {
macro_rules! create {
($doc:expr) => {
paste! {
#[doc = $doc]
pub struct Struct;
}
};
}
macro_rules! forward {
($name:ident) => {
create!(stringify!($name));
};
}
forward!(documentation);
let _ = Struct;
}

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#![allow(clippy::let_underscore_untyped)]
use paste::paste;
#[test]
fn test_shared_hygiene() {
paste! {
let [<a a>] = 1;
assert_eq!([<a a>], 1);
}
}
#[test]
fn test_repeat() {
const ROCKET_A: &str = "/a";
const ROCKET_B: &str = "/b";
macro_rules! routes {
($($route:ident),*) => {{
paste! {
vec![$( [<ROCKET_ $route>] ),*]
}
}}
}
let routes = routes!(A, B);
assert_eq!(routes, vec!["/a", "/b"]);
}
#[test]
fn test_literal_to_identifier() {
const CONST0: &str = "const0";
let pasted = paste!([<CONST 0>]);
assert_eq!(pasted, CONST0);
let pasted = paste!([<CONST '0'>]);
assert_eq!(pasted, CONST0);
let pasted = paste!([<CONST "0">]);
assert_eq!(pasted, CONST0);
let pasted = paste!([<CONST r"0">]);
assert_eq!(pasted, CONST0);
let pasted = paste!([<CONST '\u{30}'>]);
assert_eq!(pasted, CONST0);
}
#[test]
fn test_literal_suffix() {
macro_rules! literal {
($bit:tt) => {
paste!([<1_u $bit>])
};
}
assert_eq!(literal!(32), 1);
}
#[test]
fn test_underscore() {
paste! {
const A_B: usize = 0;
assert_eq!([<A _ B>], 0);
}
}
#[test]
fn test_lifetime() {
paste! {
#[allow(dead_code)]
struct S<[<'d e>]> {
q: &[<'d e>] str,
}
}
}
#[test]
fn test_keyword() {
paste! {
struct [<F move>];
let _ = Fmove;
}
}
#[test]
fn test_literal_str() {
paste! {
#[allow(non_camel_case_types)]
struct [<Foo "Bar-Baz">];
let _ = FooBar_Baz;
}
}
#[test]
fn test_env_literal() {
paste! {
struct [<Lib env bar>];
let _ = Libenvbar;
}
}
#[test]
fn test_env_present() {
paste! {
struct [<Lib env!("CARGO_PKG_NAME")>];
let _ = Libpaste;
}
}
#[test]
fn test_raw_identifier() {
paste! {
struct [<F r#move>];
let _ = Fmove;
}
}
#[test]
fn test_false_start() {
trait Trait {
fn f() -> usize;
}
struct S;
impl Trait for S {
fn f() -> usize {
0
}
}
paste! {
let x = [<S as Trait>::f()];
assert_eq!(x[0], 0);
}
}
#[test]
fn test_local_variable() {
let yy = 0;
paste! {
assert_eq!([<y y>], 0);
}
}
#[test]
fn test_empty() {
paste! {
assert_eq!(stringify!([<y y>]), "yy");
assert_eq!(stringify!([<>]).replace(' ', ""), "[<>]");
}
}
#[test]
fn test_env_to_lower() {
paste! {
struct [<Lib env!("CARGO_PKG_NAME"):lower>];
let _ = Libpaste;
}
}
#[test]
fn test_env_to_upper() {
paste! {
const [<LIB env!("CARGO_PKG_NAME"):upper>]: &str = "libpaste";
let _ = LIBPASTE;
}
}
#[test]
fn test_env_to_snake() {
paste! {
const [<LIB env!("CARGO_PKG_NAME"):snake:upper>]: &str = "libpaste";
let _ = LIBPASTE;
}
}
#[test]
fn test_env_to_camel() {
paste! {
#[allow(non_upper_case_globals)]
const [<LIB env!("CARGO_PKG_NAME"):camel>]: &str = "libpaste";
let _ = LIBPaste;
}
}
mod test_x86_feature_literal {
// work around https://github.com/rust-lang/rust/issues/72726
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
macro_rules! my_is_x86_feature_detected {
($feat:literal) => {
use paste::paste;
paste! {
#[test]
fn test() {
let _ = is_x86_feature_detected!($feat);
}
}
};
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
macro_rules! my_is_x86_feature_detected {
($feat:literal) => {
#[ignore]
#[test]
fn test() {}
};
}
my_is_x86_feature_detected!("mmx");
}
#[rustversion::since(1.46)]
mod test_local_setter {
// https://github.com/dtolnay/paste/issues/7
use paste::paste;
#[derive(Default)]
struct Test {
val: i32,
}
impl Test {
fn set_val(&mut self, arg: i32) {
self.val = arg;
}
}
macro_rules! setter {
($obj:expr, $field:ident, $value:expr) => {
paste! { $obj.[<set_ $field>]($value); }
};
($field:ident, $value:expr) => {{
let mut new = Test::default();
setter!(new, val, $value);
new
}};
}
#[test]
fn test_local_setter() {
let a = setter!(val, 42);
assert_eq!(a.val, 42);
}
}
// https://github.com/dtolnay/paste/issues/85
#[test]
fn test_top_level_none_delimiter() {
macro_rules! clone {
($val:expr) => {
paste! {
$val.clone()
}
};
}
#[derive(Clone)]
struct A;
impl A {
fn consume_self(self) {
let _ = self;
}
}
clone!(&A).consume_self();
}

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#![allow(clippy::let_underscore_untyped)]
mod test_basic {
use paste::paste;
struct Struct;
paste! {
impl Struct {
fn [<a b c>]() {}
}
}
#[test]
fn test() {
Struct::abc();
}
}
mod test_in_impl {
use paste::paste;
struct Struct;
impl Struct {
paste! {
fn [<a b c>]() {}
}
}
#[test]
fn test() {
Struct::abc();
}
}
mod test_none_delimited_single_ident {
use paste::paste;
macro_rules! m {
($id:ident) => {
paste! {
fn f() -> &'static str {
stringify!($id)
}
}
};
}
m!(i32x4);
#[test]
fn test() {
assert_eq!(f(), "i32x4");
}
}
mod test_none_delimited_single_lifetime {
use paste::paste;
macro_rules! m {
($life:lifetime) => {
paste! {
pub struct S<$life>(#[allow(dead_code)] pub &$life ());
impl<$life> S<$life> {
fn f() {}
}
}
};
}
m!('a);
#[test]
fn test() {
S::f();
}
}
mod test_to_lower {
use paste::paste;
macro_rules! m {
($id:ident) => {
paste! {
fn [<my_ $id:lower _here>](_arg: u8) -> &'static str {
stringify!([<$id:lower>])
}
}
};
}
m!(Test);
#[test]
fn test_to_lower() {
assert_eq!(my_test_here(0), "test");
}
}
mod test_to_upper {
use paste::paste;
macro_rules! m {
($id:ident) => {
paste! {
const [<MY_ $id:upper _HERE>]: &str = stringify!([<$id:upper>]);
}
};
}
m!(Test);
#[test]
fn test_to_upper() {
assert_eq!(MY_TEST_HERE, "TEST");
}
}
mod test_to_snake {
use paste::paste;
macro_rules! m {
($id:ident) => {
paste! {
const DEFAULT_SNAKE: &str = stringify!([<$id:snake>]);
const LOWER_SNAKE: &str = stringify!([<$id:snake:lower>]);
const UPPER_SNAKE: &str = stringify!([<$id:snake:upper>]);
}
};
}
m!(ThisIsButATest);
#[test]
fn test_to_snake() {
assert_eq!(DEFAULT_SNAKE, "this_is_but_a_test");
assert_eq!(LOWER_SNAKE, "this_is_but_a_test");
assert_eq!(UPPER_SNAKE, "THIS_IS_BUT_A_TEST");
}
}
mod test_to_camel {
use paste::paste;
macro_rules! m {
($id:ident) => {
paste! {
const DEFAULT_CAMEL: &str = stringify!([<$id:camel>]);
const LOWER_CAMEL: &str = stringify!([<$id:camel:lower>]);
const UPPER_CAMEL: &str = stringify!([<$id:camel:upper>]);
}
};
}
m!(this_is_but_a_test);
#[test]
fn test_to_camel() {
assert_eq!(DEFAULT_CAMEL, "ThisIsButATest");
assert_eq!(LOWER_CAMEL, "thisisbutatest");
assert_eq!(UPPER_CAMEL, "THISISBUTATEST");
}
}
mod test_doc_expr {
// https://github.com/dtolnay/paste/issues/29
use paste::paste;
macro_rules! doc_expr {
($doc:expr) => {
paste! {
#[doc = $doc]
pub struct S;
}
};
}
doc_expr!(stringify!(...));
#[test]
fn test_doc_expr() {
let _: S;
}
}
mod test_type_in_path {
// https://github.com/dtolnay/paste/issues/31
use paste::paste;
mod keys {
#[derive(Default)]
pub struct Mib<T = ()>(std::marker::PhantomData<T>);
}
macro_rules! types {
($mib:ty) => {
paste! {
#[derive(Default)]
pub struct S(pub keys::$mib);
}
};
}
macro_rules! write {
($fn:ident, $field:ty) => {
paste! {
pub fn $fn() -> $field {
$field::default()
}
}
};
}
types! {Mib<[usize; 2]>}
write! {get_a, keys::Mib}
write! {get_b, usize}
#[test]
fn test_type_in_path() {
let _: S;
let _ = get_a;
let _ = get_b;
}
}
mod test_type_in_fn_arg {
// https://github.com/dtolnay/paste/issues/38
use paste::paste;
fn _jit_address(_node: ()) {}
macro_rules! jit_reexport {
($fn:ident, $arg:ident : $typ:ty) => {
paste! {
pub fn $fn($arg: $typ) {
[<_jit_ $fn>]($arg);
}
}
};
}
jit_reexport!(address, node: ());
#[test]
fn test_type_in_fn_arg() {
let _ = address;
}
}
mod test_pat_in_expr_position {
// https://github.com/xiph/rav1e/pull/2324/files
use paste::paste;
macro_rules! rav1e_bad {
($e:pat) => {
paste! {
#[test]
fn test() {
let _ = $e;
}
}
};
}
rav1e_bad!(std::fmt::Error);
}

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#![deny(warnings)]
use paste::paste;
macro_rules! m {
($i:ident) => {
paste! {
pub fn [<foo $i>]() {}
}
};
}
m!(Bar);
fn main() {}

16
vendor/paste/tests/ui/case-warning.stderr vendored Normal file
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error: function `fooBar` should have a snake case name
--> tests/ui/case-warning.rs:8:20
|
8 | pub fn [<foo $i>]() {}
| ^^^^^^^^^^ help: convert the identifier to snake case: `foo_bar`
...
13 | m!(Bar);
| ------- in this macro invocation
|
note: the lint level is defined here
--> tests/ui/case-warning.rs:1:9
|
1 | #![deny(warnings)]
| ^^^^^^^^
= note: `#[deny(non_snake_case)]` implied by `#[deny(warnings)]`
= note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)

7
vendor/paste/tests/ui/env-empty.rs vendored Normal file
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use paste::paste;
paste! {
fn [<env!()>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/env-empty.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: expected string literal as argument to env! macro
--> tests/ui/env-empty.rs:4:10
|
4 | fn [<env!()>]() {}
| ^^^^^^

7
vendor/paste/tests/ui/env-non-string.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<env!(1.31)>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/env-non-string.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: expected string literal
--> tests/ui/env-non-string.rs:4:15
|
4 | fn [<env!(1.31)>]() {}
| ^^^^

7
vendor/paste/tests/ui/env-suffix.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<env!("VAR"suffix)>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/env-suffix.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: expected string literal
--> tests/ui/env-suffix.rs:4:15
|
4 | fn [<env!("VAR"suffix)>]() {}
| ^^^^^^^^^^^

7
vendor/paste/tests/ui/env-unexpected.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<env!("VAR" "VAR")>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/env-unexpected.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: unexpected token in env! macro
--> tests/ui/env-unexpected.rs:4:21
|
4 | fn [<env!("VAR" "VAR")>]() {}
| ^^^^^

15
vendor/paste/tests/ui/invalid-ident.rs vendored Normal file
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@@ -0,0 +1,15 @@
use paste::paste;
paste! {
fn [<0 f>]() {}
}
paste! {
fn [<f '"'>]() {}
}
paste! {
fn [<f "'">]() {}
}
fn main() {}

26
vendor/paste/tests/ui/invalid-ident.stderr vendored Normal file
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@@ -0,0 +1,26 @@
error: expected identifier, found `0f`
--> tests/ui/invalid-ident.rs:3:1
|
3 | / paste! {
4 | | fn [<0 f>]() {}
5 | | }
| |_^ expected identifier
|
help: identifiers cannot start with a number
--> tests/ui/invalid-ident.rs:3:1
|
3 | paste! {
| ^
= note: this error originates in the macro `paste` (in Nightly builds, run with -Z macro-backtrace for more info)
error: `"f\""` is not a valid identifier
--> tests/ui/invalid-ident.rs:8:8
|
8 | fn [<f '"'>]() {}
| ^^^^^^^^^
error: `"f'"` is not a valid identifier
--> tests/ui/invalid-ident.rs:12:8
|
12 | fn [<f "'">]() {}
| ^^^^^^^^^

7
vendor/paste/tests/ui/missing-paren-on-env.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<env! huh>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/missing-paren-on-env.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: expected `(`
--> tests/ui/missing-paren-on-env.rs:4:15
|
4 | fn [<env! huh>]() {}
| ^^^

7
vendor/paste/tests/ui/no-env-var.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<a env!("PASTE_UNKNOWN") b>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/no-env-var.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: no such env var: "PASTE_UNKNOWN"
--> tests/ui/no-env-var.rs:4:17
|
4 | fn [<a env!("PASTE_UNKNOWN") b>]() {}
| ^^^^^^^^^^^^^^^

7
vendor/paste/tests/ui/no-ident-after-colon.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<name:0>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/no-ident-after-colon.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: expected identifier after `:`
--> tests/ui/no-ident-after-colon.rs:4:15
|
4 | fn [<name:0>]() {}
| ^

7
vendor/paste/tests/ui/unexpected-group.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<a {} b>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/unexpected-group.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: unexpected token
--> tests/ui/unexpected-group.rs:4:12
|
4 | fn [<a {} b>]() {}
| ^^

7
vendor/paste/tests/ui/unexpected-modifier.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<:lower x>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/unexpected-modifier.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: unexpected modifier
--> tests/ui/unexpected-modifier.rs:4:10
|
4 | fn [<:lower x>]() {}
| ^^^^^^

7
vendor/paste/tests/ui/unexpected-punct.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<a + b>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/unexpected-punct.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: unexpected punct
--> tests/ui/unexpected-punct.rs:4:12
|
4 | fn [<a + b>]() {}
| ^

21
vendor/paste/tests/ui/unsupported-literal.rs vendored Normal file
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@@ -0,0 +1,21 @@
use paste::paste;
paste! {
fn [<x 1e+100 z>]() {}
}
paste! {
// `xyz` is not correct. `xbyz` is certainly not correct. Maybe `x121z`
// would be justifiable but for now don't accept this.
fn [<x b'y' z>]() {}
}
paste! {
fn [<x b"y" z>]() {}
}
paste! {
fn [<x br"y" z>]() {}
}
fn main() {}

23
vendor/paste/tests/ui/unsupported-literal.stderr vendored Normal file
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@@ -0,0 +1,23 @@
error: unsupported literal
--> tests/ui/unsupported-literal.rs:4:12
|
4 | fn [<x 1e+100 z>]() {}
| ^^^^^^
error: unsupported literal
--> tests/ui/unsupported-literal.rs:10:12
|
10 | fn [<x b'y' z>]() {}
| ^^^^
error: unsupported literal
--> tests/ui/unsupported-literal.rs:14:12
|
14 | fn [<x b"y" z>]() {}
| ^^^^
error: unsupported literal
--> tests/ui/unsupported-literal.rs:18:12
|
18 | fn [<x br"y" z>]() {}
| ^^^^^

7
vendor/paste/tests/ui/unsupported-modifier.rs vendored Normal file
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@@ -0,0 +1,7 @@
use paste::paste;
paste! {
fn [<a:pillow>]() {}
}
fn main() {}

5
vendor/paste/tests/ui/unsupported-modifier.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: unsupported modifier
--> tests/ui/unsupported-modifier.rs:4:11
|
4 | fn [<a:pillow>]() {}
| ^^^^^^^