From: Ariel Miculas <amiculas@cisco.com>
To: rust-for-linux@vger.kernel.org
Cc: Miguel Ojeda <ojeda@kernel.org>
Subject: [PATCH 24/80] rust: quote: import crate
Date: Fri, 9 Jun 2023 09:30:22 +0300 [thread overview]
Message-ID: <20230609063118.24852-25-amiculas@cisco.com> (raw)
In-Reply-To: <20230609063118.24852-1-amiculas@cisco.com>
From: Miguel Ojeda <ojeda@kernel.org>
This is a subset of the Rust `quote` crate,
version 1.0.21, licensed under "Apache-2.0 OR MIT", from:
https://github.com/dtolnay/quote/raw/1.0.21/src
The files are copied as-is, with no modifications whatsoever
(not even adding the SPDX identifiers).
For copyright details, please see:
https://github.com/dtolnay/quote/blob/1.0.21/README.md#license
https://github.com/dtolnay/quote/blob/1.0.21/LICENSE-APACHE
https://github.com/dtolnay/quote/blob/1.0.21/LICENSE-MIT
The next patch modifies these files as needed for use within
the kernel. This patch split allows reviewers to double-check
the import and to clearly see the differences introduced.
The following script may be used to verify the contents:
for path in $(cd rust/quote/ && find . -type f -name '*.rs'); do
curl --silent --show-error --location \
https://github.com/dtolnay/quote/raw/1.0.21/src/$path \
| diff --unified rust/quote/$path - && echo $path: OK
done
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
rust/quote/ext.rs | 110 +++
rust/quote/format.rs | 168 ++++
rust/quote/ident_fragment.rs | 86 ++
rust/quote/lib.rs | 1434 ++++++++++++++++++++++++++++++++++
rust/quote/runtime.rs | 438 +++++++++++
rust/quote/spanned.rs | 43 +
rust/quote/to_tokens.rs | 209 +++++
7 files changed, 2488 insertions(+)
create mode 100644 rust/quote/ext.rs
create mode 100644 rust/quote/format.rs
create mode 100644 rust/quote/ident_fragment.rs
create mode 100644 rust/quote/lib.rs
create mode 100644 rust/quote/runtime.rs
create mode 100644 rust/quote/spanned.rs
create mode 100644 rust/quote/to_tokens.rs
diff --git a/rust/quote/ext.rs b/rust/quote/ext.rs
new file mode 100644
index 000000000000..92c2315b182d
--- /dev/null
+++ b/rust/quote/ext.rs
@@ -0,0 +1,110 @@
+use super::ToTokens;
+use core::iter;
+use proc_macro2::{TokenStream, TokenTree};
+
+/// TokenStream extension trait with methods for appending tokens.
+///
+/// This trait is sealed and cannot be implemented outside of the `quote` crate.
+pub trait TokenStreamExt: private::Sealed {
+ /// For use by `ToTokens` implementations.
+ ///
+ /// Appends the token specified to this list of tokens.
+ fn append<U>(&mut self, token: U)
+ where
+ U: Into<TokenTree>;
+
+ /// For use by `ToTokens` implementations.
+ ///
+ /// ```
+ /// # use quote::{quote, TokenStreamExt, ToTokens};
+ /// # use proc_macro2::TokenStream;
+ /// #
+ /// struct X;
+ ///
+ /// impl ToTokens for X {
+ /// fn to_tokens(&self, tokens: &mut TokenStream) {
+ /// tokens.append_all(&[true, false]);
+ /// }
+ /// }
+ ///
+ /// let tokens = quote!(#X);
+ /// assert_eq!(tokens.to_string(), "true false");
+ /// ```
+ fn append_all<I>(&mut self, iter: I)
+ where
+ I: IntoIterator,
+ I::Item: ToTokens;
+
+ /// For use by `ToTokens` implementations.
+ ///
+ /// Appends all of the items in the iterator `I`, separated by the tokens
+ /// `U`.
+ fn append_separated<I, U>(&mut self, iter: I, op: U)
+ where
+ I: IntoIterator,
+ I::Item: ToTokens,
+ U: ToTokens;
+
+ /// For use by `ToTokens` implementations.
+ ///
+ /// Appends all tokens in the iterator `I`, appending `U` after each
+ /// element, including after the last element of the iterator.
+ fn append_terminated<I, U>(&mut self, iter: I, term: U)
+ where
+ I: IntoIterator,
+ I::Item: ToTokens,
+ U: ToTokens;
+}
+
+impl TokenStreamExt for TokenStream {
+ fn append<U>(&mut self, token: U)
+ where
+ U: Into<TokenTree>,
+ {
+ self.extend(iter::once(token.into()));
+ }
+
+ fn append_all<I>(&mut self, iter: I)
+ where
+ I: IntoIterator,
+ I::Item: ToTokens,
+ {
+ for token in iter {
+ token.to_tokens(self);
+ }
+ }
+
+ fn append_separated<I, U>(&mut self, iter: I, op: U)
+ where
+ I: IntoIterator,
+ I::Item: ToTokens,
+ U: ToTokens,
+ {
+ for (i, token) in iter.into_iter().enumerate() {
+ if i > 0 {
+ op.to_tokens(self);
+ }
+ token.to_tokens(self);
+ }
+ }
+
+ fn append_terminated<I, U>(&mut self, iter: I, term: U)
+ where
+ I: IntoIterator,
+ I::Item: ToTokens,
+ U: ToTokens,
+ {
+ for token in iter {
+ token.to_tokens(self);
+ term.to_tokens(self);
+ }
+ }
+}
+
+mod private {
+ use proc_macro2::TokenStream;
+
+ pub trait Sealed {}
+
+ impl Sealed for TokenStream {}
+}
diff --git a/rust/quote/format.rs b/rust/quote/format.rs
new file mode 100644
index 000000000000..3cddbd2819d6
--- /dev/null
+++ b/rust/quote/format.rs
@@ -0,0 +1,168 @@
+/// Formatting macro for constructing `Ident`s.
+///
+/// <br>
+///
+/// # Syntax
+///
+/// Syntax is copied from the [`format!`] macro, supporting both positional and
+/// named arguments.
+///
+/// Only a limited set of formatting traits are supported. The current mapping
+/// of format types to traits is:
+///
+/// * `{}` ⇒ [`IdentFragment`]
+/// * `{:o}` ⇒ [`Octal`](std::fmt::Octal)
+/// * `{:x}` ⇒ [`LowerHex`](std::fmt::LowerHex)
+/// * `{:X}` ⇒ [`UpperHex`](std::fmt::UpperHex)
+/// * `{:b}` ⇒ [`Binary`](std::fmt::Binary)
+///
+/// See [`std::fmt`] for more information.
+///
+/// <br>
+///
+/// # IdentFragment
+///
+/// Unlike `format!`, this macro uses the [`IdentFragment`] formatting trait by
+/// default. This trait is like `Display`, with a few differences:
+///
+/// * `IdentFragment` is only implemented for a limited set of types, such as
+/// unsigned integers and strings.
+/// * [`Ident`] arguments will have their `r#` prefixes stripped, if present.
+///
+/// [`IdentFragment`]: crate::IdentFragment
+/// [`Ident`]: proc_macro2::Ident
+///
+/// <br>
+///
+/// # Hygiene
+///
+/// The [`Span`] of the first `Ident` argument is used as the span of the final
+/// identifier, falling back to [`Span::call_site`] when no identifiers are
+/// provided.
+///
+/// ```
+/// # use quote::format_ident;
+/// # let ident = format_ident!("Ident");
+/// // If `ident` is an Ident, the span of `my_ident` will be inherited from it.
+/// let my_ident = format_ident!("My{}{}", ident, "IsCool");
+/// assert_eq!(my_ident, "MyIdentIsCool");
+/// ```
+///
+/// Alternatively, the span can be overridden by passing the `span` named
+/// argument.
+///
+/// ```
+/// # use quote::format_ident;
+/// # const IGNORE_TOKENS: &'static str = stringify! {
+/// let my_span = /* ... */;
+/// # };
+/// # let my_span = proc_macro2::Span::call_site();
+/// format_ident!("MyIdent", span = my_span);
+/// ```
+///
+/// [`Span`]: proc_macro2::Span
+/// [`Span::call_site`]: proc_macro2::Span::call_site
+///
+/// <p><br></p>
+///
+/// # Panics
+///
+/// This method will panic if the resulting formatted string is not a valid
+/// identifier.
+///
+/// <br>
+///
+/// # Examples
+///
+/// Composing raw and non-raw identifiers:
+/// ```
+/// # use quote::format_ident;
+/// let my_ident = format_ident!("My{}", "Ident");
+/// assert_eq!(my_ident, "MyIdent");
+///
+/// let raw = format_ident!("r#Raw");
+/// assert_eq!(raw, "r#Raw");
+///
+/// let my_ident_raw = format_ident!("{}Is{}", my_ident, raw);
+/// assert_eq!(my_ident_raw, "MyIdentIsRaw");
+/// ```
+///
+/// Integer formatting options:
+/// ```
+/// # use quote::format_ident;
+/// let num: u32 = 10;
+///
+/// let decimal = format_ident!("Id_{}", num);
+/// assert_eq!(decimal, "Id_10");
+///
+/// let octal = format_ident!("Id_{:o}", num);
+/// assert_eq!(octal, "Id_12");
+///
+/// let binary = format_ident!("Id_{:b}", num);
+/// assert_eq!(binary, "Id_1010");
+///
+/// let lower_hex = format_ident!("Id_{:x}", num);
+/// assert_eq!(lower_hex, "Id_a");
+///
+/// let upper_hex = format_ident!("Id_{:X}", num);
+/// assert_eq!(upper_hex, "Id_A");
+/// ```
+#[macro_export]
+macro_rules! format_ident {
+ ($fmt:expr) => {
+ $crate::format_ident_impl!([
+ $crate::__private::Option::None,
+ $fmt
+ ])
+ };
+
+ ($fmt:expr, $($rest:tt)*) => {
+ $crate::format_ident_impl!([
+ $crate::__private::Option::None,
+ $fmt
+ ] $($rest)*)
+ };
+}
+
+#[macro_export]
+#[doc(hidden)]
+macro_rules! format_ident_impl {
+ // Final state
+ ([$span:expr, $($fmt:tt)*]) => {
+ $crate::__private::mk_ident(
+ &$crate::__private::format!($($fmt)*),
+ $span,
+ )
+ };
+
+ // Span argument
+ ([$old:expr, $($fmt:tt)*] span = $span:expr) => {
+ $crate::format_ident_impl!([$old, $($fmt)*] span = $span,)
+ };
+ ([$old:expr, $($fmt:tt)*] span = $span:expr, $($rest:tt)*) => {
+ $crate::format_ident_impl!([
+ $crate::__private::Option::Some::<$crate::__private::Span>($span),
+ $($fmt)*
+ ] $($rest)*)
+ };
+
+ // Named argument
+ ([$span:expr, $($fmt:tt)*] $name:ident = $arg:expr) => {
+ $crate::format_ident_impl!([$span, $($fmt)*] $name = $arg,)
+ };
+ ([$span:expr, $($fmt:tt)*] $name:ident = $arg:expr, $($rest:tt)*) => {
+ match $crate::__private::IdentFragmentAdapter(&$arg) {
+ arg => $crate::format_ident_impl!([$span.or(arg.span()), $($fmt)*, $name = arg] $($rest)*),
+ }
+ };
+
+ // Positional argument
+ ([$span:expr, $($fmt:tt)*] $arg:expr) => {
+ $crate::format_ident_impl!([$span, $($fmt)*] $arg,)
+ };
+ ([$span:expr, $($fmt:tt)*] $arg:expr, $($rest:tt)*) => {
+ match $crate::__private::IdentFragmentAdapter(&$arg) {
+ arg => $crate::format_ident_impl!([$span.or(arg.span()), $($fmt)*, arg] $($rest)*),
+ }
+ };
+}
diff --git a/rust/quote/ident_fragment.rs b/rust/quote/ident_fragment.rs
new file mode 100644
index 000000000000..cf74024b4825
--- /dev/null
+++ b/rust/quote/ident_fragment.rs
@@ -0,0 +1,86 @@
+use core::fmt;
+use proc_macro2::{Ident, Span};
+use std::borrow::Cow;
+
+/// Specialized formatting trait used by `format_ident!`.
+///
+/// [`Ident`] arguments formatted using this trait will have their `r#` prefix
+/// stripped, if present.
+///
+/// See [`format_ident!`] for more information.
+pub trait IdentFragment {
+ /// Format this value as an identifier fragment.
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result;
+
+ /// Span associated with this `IdentFragment`.
+ ///
+ /// If non-`None`, may be inherited by formatted identifiers.
+ fn span(&self) -> Option<Span> {
+ None
+ }
+}
+
+impl<T: IdentFragment + ?Sized> IdentFragment for &T {
+ fn span(&self) -> Option<Span> {
+ <T as IdentFragment>::span(*self)
+ }
+
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ IdentFragment::fmt(*self, f)
+ }
+}
+
+impl<T: IdentFragment + ?Sized> IdentFragment for &mut T {
+ fn span(&self) -> Option<Span> {
+ <T as IdentFragment>::span(*self)
+ }
+
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ IdentFragment::fmt(*self, f)
+ }
+}
+
+impl IdentFragment for Ident {
+ fn span(&self) -> Option<Span> {
+ Some(self.span())
+ }
+
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ let id = self.to_string();
+ if id.starts_with("r#") {
+ fmt::Display::fmt(&id[2..], f)
+ } else {
+ fmt::Display::fmt(&id[..], f)
+ }
+ }
+}
+
+impl<T> IdentFragment for Cow<'_, T>
+where
+ T: IdentFragment + ToOwned + ?Sized,
+{
+ fn span(&self) -> Option<Span> {
+ T::span(self)
+ }
+
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ T::fmt(self, f)
+ }
+}
+
+// Limited set of types which this is implemented for, as we want to avoid types
+// which will often include non-identifier characters in their `Display` impl.
+macro_rules! ident_fragment_display {
+ ($($T:ty),*) => {
+ $(
+ impl IdentFragment for $T {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::Display::fmt(self, f)
+ }
+ }
+ )*
+ };
+}
+
+ident_fragment_display!(bool, str, String, char);
+ident_fragment_display!(u8, u16, u32, u64, u128, usize);
diff --git a/rust/quote/lib.rs b/rust/quote/lib.rs
new file mode 100644
index 000000000000..35594827f869
--- /dev/null
+++ b/rust/quote/lib.rs
@@ -0,0 +1,1434 @@
+//! [![github]](https://github.com/dtolnay/quote) [![crates-io]](https://crates.io/crates/quote) [![docs-rs]](https://docs.rs/quote)
+//!
+//! [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>
+//!
+//! This crate provides the [`quote!`] macro for turning Rust syntax tree data
+//! structures into tokens of source code.
+//!
+//! [`quote!`]: macro.quote.html
+//!
+//! Procedural macros in Rust receive a stream of tokens as input, execute
+//! arbitrary Rust code to determine how to manipulate those tokens, and produce
+//! a stream of tokens to hand back to the compiler to compile into the caller's
+//! crate. Quasi-quoting is a solution to one piece of that — producing
+//! tokens to return to the compiler.
+//!
+//! The idea of quasi-quoting is that we write *code* that we treat as *data*.
+//! Within the `quote!` macro, we can write what looks like code to our text
+//! editor or IDE. We get all the benefits of the editor's brace matching,
+//! syntax highlighting, indentation, and maybe autocompletion. But rather than
+//! compiling that as code into the current crate, we can treat it as data, pass
+//! it around, mutate it, and eventually hand it back to the compiler as tokens
+//! to compile into the macro caller's crate.
+//!
+//! This crate is motivated by the procedural macro use case, but is a
+//! general-purpose Rust quasi-quoting library and is not specific to procedural
+//! macros.
+//!
+//! ```toml
+//! [dependencies]
+//! quote = "1.0"
+//! ```
+//!
+//! <br>
+//!
+//! # Example
+//!
+//! The following quasi-quoted block of code is something you might find in [a]
+//! procedural macro having to do with data structure serialization. The `#var`
+//! syntax performs interpolation of runtime variables into the quoted tokens.
+//! Check out the documentation of the [`quote!`] macro for more detail about
+//! the syntax. See also the [`quote_spanned!`] macro which is important for
+//! implementing hygienic procedural macros.
+//!
+//! [a]: https://serde.rs/
+//! [`quote_spanned!`]: macro.quote_spanned.html
+//!
+//! ```
+//! # use quote::quote;
+//! #
+//! # let generics = "";
+//! # let where_clause = "";
+//! # let field_ty = "";
+//! # let item_ty = "";
+//! # let path = "";
+//! # let value = "";
+//! #
+//! let tokens = quote! {
+//! struct SerializeWith #generics #where_clause {
+//! value: &'a #field_ty,
+//! phantom: core::marker::PhantomData<#item_ty>,
+//! }
+//!
+//! impl #generics serde::Serialize for SerializeWith #generics #where_clause {
+//! fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+//! where
+//! S: serde::Serializer,
+//! {
+//! #path(self.value, serializer)
+//! }
+//! }
+//!
+//! SerializeWith {
+//! value: #value,
+//! phantom: core::marker::PhantomData::<#item_ty>,
+//! }
+//! };
+//! ```
+
+// Quote types in rustdoc of other crates get linked to here.
+#![doc(html_root_url = "https://docs.rs/quote/1.0.21")]
+#![allow(
+ clippy::doc_markdown,
+ clippy::missing_errors_doc,
+ clippy::missing_panics_doc,
+ clippy::module_name_repetitions,
+ // false positive https://github.com/rust-lang/rust-clippy/issues/6983
+ clippy::wrong_self_convention,
+)]
+
+#[cfg(all(
+ not(all(target_arch = "wasm32", target_os = "unknown")),
+ feature = "proc-macro"
+))]
+extern crate proc_macro;
+
+mod ext;
+mod format;
+mod ident_fragment;
+mod to_tokens;
+
+// Not public API.
+#[doc(hidden)]
+#[path = "runtime.rs"]
+pub mod __private;
+
+pub use crate::ext::TokenStreamExt;
+pub use crate::ident_fragment::IdentFragment;
+pub use crate::to_tokens::ToTokens;
+
+// Not public API.
+#[doc(hidden)]
+pub mod spanned;
+
+/// The whole point.
+///
+/// Performs variable interpolation against the input and produces it as
+/// [`proc_macro2::TokenStream`].
+///
+/// Note: for returning tokens to the compiler in a procedural macro, use
+/// `.into()` on the result to convert to [`proc_macro::TokenStream`].
+///
+/// [`TokenStream`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.TokenStream.html
+///
+/// <br>
+///
+/// # Interpolation
+///
+/// Variable interpolation is done with `#var` (similar to `$var` in
+/// `macro_rules!` macros). This grabs the `var` variable that is currently in
+/// scope and inserts it in that location in the output tokens. Any type
+/// implementing the [`ToTokens`] trait can be interpolated. This includes most
+/// Rust primitive types as well as most of the syntax tree types from the [Syn]
+/// crate.
+///
+/// [`ToTokens`]: trait.ToTokens.html
+/// [Syn]: https://github.com/dtolnay/syn
+///
+/// Repetition is done using `#(...)*` or `#(...),*` again similar to
+/// `macro_rules!`. This iterates through the elements of any variable
+/// interpolated within the repetition and inserts a copy of the repetition body
+/// for each one. The variables in an interpolation may be a `Vec`, slice,
+/// `BTreeSet`, or any `Iterator`.
+///
+/// - `#(#var)*` — no separators
+/// - `#(#var),*` — the character before the asterisk is used as a separator
+/// - `#( struct #var; )*` — the repetition can contain other tokens
+/// - `#( #k => println!("{}", #v), )*` — even multiple interpolations
+///
+/// <br>
+///
+/// # Hygiene
+///
+/// Any interpolated tokens preserve the `Span` information provided by their
+/// `ToTokens` implementation. Tokens that originate within the `quote!`
+/// invocation are spanned with [`Span::call_site()`].
+///
+/// [`Span::call_site()`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.Span.html#method.call_site
+///
+/// A different span can be provided through the [`quote_spanned!`] macro.
+///
+/// [`quote_spanned!`]: macro.quote_spanned.html
+///
+/// <br>
+///
+/// # Return type
+///
+/// The macro evaluates to an expression of type `proc_macro2::TokenStream`.
+/// Meanwhile Rust procedural macros are expected to return the type
+/// `proc_macro::TokenStream`.
+///
+/// The difference between the two types is that `proc_macro` types are entirely
+/// specific to procedural macros and cannot ever exist in code outside of a
+/// procedural macro, while `proc_macro2` types may exist anywhere including
+/// tests and non-macro code like main.rs and build.rs. This is why even the
+/// procedural macro ecosystem is largely built around `proc_macro2`, because
+/// that ensures the libraries are unit testable and accessible in non-macro
+/// contexts.
+///
+/// There is a [`From`]-conversion in both directions so returning the output of
+/// `quote!` from a procedural macro usually looks like `tokens.into()` or
+/// `proc_macro::TokenStream::from(tokens)`.
+///
+/// [`From`]: https://doc.rust-lang.org/std/convert/trait.From.html
+///
+/// <br>
+///
+/// # Examples
+///
+/// ### Procedural macro
+///
+/// The structure of a basic procedural macro is as follows. Refer to the [Syn]
+/// crate for further useful guidance on using `quote!` as part of a procedural
+/// macro.
+///
+/// [Syn]: https://github.com/dtolnay/syn
+///
+/// ```
+/// # #[cfg(any())]
+/// extern crate proc_macro;
+/// # extern crate proc_macro2;
+///
+/// # #[cfg(any())]
+/// use proc_macro::TokenStream;
+/// # use proc_macro2::TokenStream;
+/// use quote::quote;
+///
+/// # const IGNORE_TOKENS: &'static str = stringify! {
+/// #[proc_macro_derive(HeapSize)]
+/// # };
+/// pub fn derive_heap_size(input: TokenStream) -> TokenStream {
+/// // Parse the input and figure out what implementation to generate...
+/// # const IGNORE_TOKENS: &'static str = stringify! {
+/// let name = /* ... */;
+/// let expr = /* ... */;
+/// # };
+/// #
+/// # let name = 0;
+/// # let expr = 0;
+///
+/// let expanded = quote! {
+/// // The generated impl.
+/// impl heapsize::HeapSize for #name {
+/// fn heap_size_of_children(&self) -> usize {
+/// #expr
+/// }
+/// }
+/// };
+///
+/// // Hand the output tokens back to the compiler.
+/// TokenStream::from(expanded)
+/// }
+/// ```
+///
+/// <p><br></p>
+///
+/// ### Combining quoted fragments
+///
+/// Usually you don't end up constructing an entire final `TokenStream` in one
+/// piece. Different parts may come from different helper functions. The tokens
+/// produced by `quote!` themselves implement `ToTokens` and so can be
+/// interpolated into later `quote!` invocations to build up a final result.
+///
+/// ```
+/// # use quote::quote;
+/// #
+/// let type_definition = quote! {...};
+/// let methods = quote! {...};
+///
+/// let tokens = quote! {
+/// #type_definition
+/// #methods
+/// };
+/// ```
+///
+/// <p><br></p>
+///
+/// ### Constructing identifiers
+///
+/// Suppose we have an identifier `ident` which came from somewhere in a macro
+/// input and we need to modify it in some way for the macro output. Let's
+/// consider prepending the identifier with an underscore.
+///
+/// Simply interpolating the identifier next to an underscore will not have the
+/// behavior of concatenating them. The underscore and the identifier will
+/// continue to be two separate tokens as if you had written `_ x`.
+///
+/// ```
+/// # use proc_macro2::{self as syn, Span};
+/// # use quote::quote;
+/// #
+/// # let ident = syn::Ident::new("i", Span::call_site());
+/// #
+/// // incorrect
+/// quote! {
+/// let mut _#ident = 0;
+/// }
+/// # ;
+/// ```
+///
+/// The solution is to build a new identifier token with the correct value. As
+/// this is such a common case, the [`format_ident!`] macro provides a
+/// convenient utility for doing so correctly.
+///
+/// ```
+/// # use proc_macro2::{Ident, Span};
+/// # use quote::{format_ident, quote};
+/// #
+/// # let ident = Ident::new("i", Span::call_site());
+/// #
+/// let varname = format_ident!("_{}", ident);
+/// quote! {
+/// let mut #varname = 0;
+/// }
+/// # ;
+/// ```
+///
+/// Alternatively, the APIs provided by Syn and proc-macro2 can be used to
+/// directly build the identifier. This is roughly equivalent to the above, but
+/// will not handle `ident` being a raw identifier.
+///
+/// ```
+/// # use proc_macro2::{self as syn, Span};
+/// # use quote::quote;
+/// #
+/// # let ident = syn::Ident::new("i", Span::call_site());
+/// #
+/// let concatenated = format!("_{}", ident);
+/// let varname = syn::Ident::new(&concatenated, ident.span());
+/// quote! {
+/// let mut #varname = 0;
+/// }
+/// # ;
+/// ```
+///
+/// <p><br></p>
+///
+/// ### Making method calls
+///
+/// Let's say our macro requires some type specified in the macro input to have
+/// a constructor called `new`. We have the type in a variable called
+/// `field_type` of type `syn::Type` and want to invoke the constructor.
+///
+/// ```
+/// # use quote::quote;
+/// #
+/// # let field_type = quote!(...);
+/// #
+/// // incorrect
+/// quote! {
+/// let value = #field_type::new();
+/// }
+/// # ;
+/// ```
+///
+/// This works only sometimes. If `field_type` is `String`, the expanded code
+/// contains `String::new()` which is fine. But if `field_type` is something
+/// like `Vec<i32>` then the expanded code is `Vec<i32>::new()` which is invalid
+/// syntax. Ordinarily in handwritten Rust we would write `Vec::<i32>::new()`
+/// but for macros often the following is more convenient.
+///
+/// ```
+/// # use quote::quote;
+/// #
+/// # let field_type = quote!(...);
+/// #
+/// quote! {
+/// let value = <#field_type>::new();
+/// }
+/// # ;
+/// ```
+///
+/// This expands to `<Vec<i32>>::new()` which behaves correctly.
+///
+/// A similar pattern is appropriate for trait methods.
+///
+/// ```
+/// # use quote::quote;
+/// #
+/// # let field_type = quote!(...);
+/// #
+/// quote! {
+/// let value = <#field_type as core::default::Default>::default();
+/// }
+/// # ;
+/// ```
+///
+/// <p><br></p>
+///
+/// ### Interpolating text inside of doc comments
+///
+/// Neither doc comments nor string literals get interpolation behavior in
+/// quote:
+///
+/// ```compile_fail
+/// quote! {
+/// /// try to interpolate: #ident
+/// ///
+/// /// ...
+/// }
+/// ```
+///
+/// ```compile_fail
+/// quote! {
+/// #[doc = "try to interpolate: #ident"]
+/// }
+/// ```
+///
+/// Instead the best way to build doc comments that involve variables is by
+/// formatting the doc string literal outside of quote.
+///
+/// ```rust
+/// # use proc_macro2::{Ident, Span};
+/// # use quote::quote;
+/// #
+/// # const IGNORE: &str = stringify! {
+/// let msg = format!(...);
+/// # };
+/// #
+/// # let ident = Ident::new("var", Span::call_site());
+/// # let msg = format!("try to interpolate: {}", ident);
+/// quote! {
+/// #[doc = #msg]
+/// ///
+/// /// ...
+/// }
+/// # ;
+/// ```
+///
+/// <p><br></p>
+///
+/// ### Indexing into a tuple struct
+///
+/// When interpolating indices of a tuple or tuple struct, we need them not to
+/// appears suffixed as integer literals by interpolating them as [`syn::Index`]
+/// instead.
+///
+/// [`syn::Index`]: https://docs.rs/syn/1.0/syn/struct.Index.html
+///
+/// ```compile_fail
+/// let i = 0usize..self.fields.len();
+///
+/// // expands to 0 + self.0usize.heap_size() + self.1usize.heap_size() + ...
+/// // which is not valid syntax
+/// quote! {
+/// 0 #( + self.#i.heap_size() )*
+/// }
+/// ```
+///
+/// ```
+/// # use proc_macro2::{Ident, TokenStream};
+/// # use quote::quote;
+/// #
+/// # mod syn {
+/// # use proc_macro2::{Literal, TokenStream};
+/// # use quote::{ToTokens, TokenStreamExt};
+/// #
+/// # pub struct Index(usize);
+/// #
+/// # impl From<usize> for Index {
+/// # fn from(i: usize) -> Self {
+/// # Index(i)
+/// # }
+/// # }
+/// #
+/// # impl ToTokens for Index {
+/// # fn to_tokens(&self, tokens: &mut TokenStream) {
+/// # tokens.append(Literal::usize_unsuffixed(self.0));
+/// # }
+/// # }
+/// # }
+/// #
+/// # struct Struct {
+/// # fields: Vec<Ident>,
+/// # }
+/// #
+/// # impl Struct {
+/// # fn example(&self) -> TokenStream {
+/// let i = (0..self.fields.len()).map(syn::Index::from);
+///
+/// // expands to 0 + self.0.heap_size() + self.1.heap_size() + ...
+/// quote! {
+/// 0 #( + self.#i.heap_size() )*
+/// }
+/// # }
+/// # }
+/// ```
+#[cfg(doc)]
+#[macro_export]
+macro_rules! quote {
+ ($($tt:tt)*) => {
+ ...
+ };
+}
+
+#[cfg(not(doc))]
+#[macro_export]
+macro_rules! quote {
+ () => {
+ $crate::__private::TokenStream::new()
+ };
+
+ // Special case rule for a single tt, for performance.
+ ($tt:tt) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ $crate::quote_token!{$tt _s}
+ _s
+ }};
+
+ // Special case rules for two tts, for performance.
+ (# $var:ident) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ $crate::ToTokens::to_tokens(&$var, &mut _s);
+ _s
+ }};
+ ($tt1:tt $tt2:tt) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ $crate::quote_token!{$tt1 _s}
+ $crate::quote_token!{$tt2 _s}
+ _s
+ }};
+
+ // Rule for any other number of tokens.
+ ($($tt:tt)*) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ $crate::quote_each_token!{_s $($tt)*}
+ _s
+ }};
+}
+
+/// Same as `quote!`, but applies a given span to all tokens originating within
+/// the macro invocation.
+///
+/// <br>
+///
+/// # Syntax
+///
+/// A span expression of type [`Span`], followed by `=>`, followed by the tokens
+/// to quote. The span expression should be brief — use a variable for
+/// anything more than a few characters. There should be no space before the
+/// `=>` token.
+///
+/// [`Span`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.Span.html
+///
+/// ```
+/// # use proc_macro2::Span;
+/// # use quote::quote_spanned;
+/// #
+/// # const IGNORE_TOKENS: &'static str = stringify! {
+/// let span = /* ... */;
+/// # };
+/// # let span = Span::call_site();
+/// # let init = 0;
+///
+/// // On one line, use parentheses.
+/// let tokens = quote_spanned!(span=> Box::into_raw(Box::new(#init)));
+///
+/// // On multiple lines, place the span at the top and use braces.
+/// let tokens = quote_spanned! {span=>
+/// Box::into_raw(Box::new(#init))
+/// };
+/// ```
+///
+/// The lack of space before the `=>` should look jarring to Rust programmers
+/// and this is intentional. The formatting is designed to be visibly
+/// off-balance and draw the eye a particular way, due to the span expression
+/// being evaluated in the context of the procedural macro and the remaining
+/// tokens being evaluated in the generated code.
+///
+/// <br>
+///
+/// # Hygiene
+///
+/// Any interpolated tokens preserve the `Span` information provided by their
+/// `ToTokens` implementation. Tokens that originate within the `quote_spanned!`
+/// invocation are spanned with the given span argument.
+///
+/// <br>
+///
+/// # Example
+///
+/// The following procedural macro code uses `quote_spanned!` to assert that a
+/// particular Rust type implements the [`Sync`] trait so that references can be
+/// safely shared between threads.
+///
+/// [`Sync`]: https://doc.rust-lang.org/std/marker/trait.Sync.html
+///
+/// ```
+/// # use quote::{quote_spanned, TokenStreamExt, ToTokens};
+/// # use proc_macro2::{Span, TokenStream};
+/// #
+/// # struct Type;
+/// #
+/// # impl Type {
+/// # fn span(&self) -> Span {
+/// # Span::call_site()
+/// # }
+/// # }
+/// #
+/// # impl ToTokens for Type {
+/// # fn to_tokens(&self, _tokens: &mut TokenStream) {}
+/// # }
+/// #
+/// # let ty = Type;
+/// # let call_site = Span::call_site();
+/// #
+/// let ty_span = ty.span();
+/// let assert_sync = quote_spanned! {ty_span=>
+/// struct _AssertSync where #ty: Sync;
+/// };
+/// ```
+///
+/// If the assertion fails, the user will see an error like the following. The
+/// input span of their type is highlighted in the error.
+///
+/// ```text
+/// error[E0277]: the trait bound `*const (): std::marker::Sync` is not satisfied
+/// --> src/main.rs:10:21
+/// |
+/// 10 | static ref PTR: *const () = &();
+/// | ^^^^^^^^^ `*const ()` cannot be shared between threads safely
+/// ```
+///
+/// In this example it is important for the where-clause to be spanned with the
+/// line/column information of the user's input type so that error messages are
+/// placed appropriately by the compiler.
+#[cfg(doc)]
+#[macro_export]
+macro_rules! quote_spanned {
+ ($span:expr=> $($tt:tt)*) => {
+ ...
+ };
+}
+
+#[cfg(not(doc))]
+#[macro_export]
+macro_rules! quote_spanned {
+ ($span:expr=>) => {{
+ let _: $crate::__private::Span = $span;
+ $crate::__private::TokenStream::new()
+ }};
+
+ // Special case rule for a single tt, for performance.
+ ($span:expr=> $tt:tt) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ let _span: $crate::__private::Span = $span;
+ $crate::quote_token_spanned!{$tt _s _span}
+ _s
+ }};
+
+ // Special case rules for two tts, for performance.
+ ($span:expr=> # $var:ident) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ let _: $crate::__private::Span = $span;
+ $crate::ToTokens::to_tokens(&$var, &mut _s);
+ _s
+ }};
+ ($span:expr=> $tt1:tt $tt2:tt) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ let _span: $crate::__private::Span = $span;
+ $crate::quote_token_spanned!{$tt1 _s _span}
+ $crate::quote_token_spanned!{$tt2 _s _span}
+ _s
+ }};
+
+ // Rule for any other number of tokens.
+ ($span:expr=> $($tt:tt)*) => {{
+ let mut _s = $crate::__private::TokenStream::new();
+ let _span: $crate::__private::Span = $span;
+ $crate::quote_each_token_spanned!{_s _span $($tt)*}
+ _s
+ }};
+}
+
+// Extract the names of all #metavariables and pass them to the $call macro.
+//
+// in: pounded_var_names!(then!(...) a #b c #( #d )* #e)
+// out: then!(... b);
+// then!(... d);
+// then!(... e);
+#[macro_export]
+#[doc(hidden)]
+macro_rules! pounded_var_names {
+ ($call:ident! $extra:tt $($tts:tt)*) => {
+ $crate::pounded_var_names_with_context!{$call! $extra
+ (@ $($tts)*)
+ ($($tts)* @)
+ }
+ };
+}
+
+#[macro_export]
+#[doc(hidden)]
+macro_rules! pounded_var_names_with_context {
+ ($call:ident! $extra:tt ($($b1:tt)*) ($($curr:tt)*)) => {
+ $(
+ $crate::pounded_var_with_context!{$call! $extra $b1 $curr}
+ )*
+ };
+}
+
+#[macro_export]
+#[doc(hidden)]
+macro_rules! pounded_var_with_context {
+ ($call:ident! $extra:tt $b1:tt ( $($inner:tt)* )) => {
+ $crate::pounded_var_names!{$call! $extra $($inner)*}
+ };
+
+ ($call:ident! $extra:tt $b1:tt [ $($inner:tt)* ]) => {
+ $crate::pounded_var_names!{$call! $extra $($inner)*}
+ };
+
+ ($call:ident! $extra:tt $b1:tt { $($inner:tt)* }) => {
+ $crate::pounded_var_names!{$call! $extra $($inner)*}
+ };
+
+ ($call:ident!($($extra:tt)*) # $var:ident) => {
+ $crate::$call!($($extra)* $var);
+ };
+
+ ($call:ident! $extra:tt $b1:tt $curr:tt) => {};
+}
+
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_bind_into_iter {
+ ($has_iter:ident $var:ident) => {
+ // `mut` may be unused if $var occurs multiple times in the list.
+ #[allow(unused_mut)]
+ let (mut $var, i) = $var.quote_into_iter();
+ let $has_iter = $has_iter | i;
+ };
+}
+
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_bind_next_or_break {
+ ($var:ident) => {
+ let $var = match $var.next() {
+ Some(_x) => $crate::__private::RepInterp(_x),
+ None => break,
+ };
+ };
+}
+
+// The obvious way to write this macro is as a tt muncher. This implementation
+// does something more complex for two reasons.
+//
+// - With a tt muncher it's easy to hit Rust's built-in recursion_limit, which
+// this implementation avoids because it isn't tail recursive.
+//
+// - Compile times for a tt muncher are quadratic relative to the length of
+// the input. This implementation is linear, so it will be faster
+// (potentially much faster) for big inputs. However, the constant factors
+// of this implementation are higher than that of a tt muncher, so it is
+// somewhat slower than a tt muncher if there are many invocations with
+// short inputs.
+//
+// An invocation like this:
+//
+// quote_each_token!(_s a b c d e f g h i j);
+//
+// expands to this:
+//
+// quote_tokens_with_context!(_s
+// (@ @ @ @ @ @ a b c d e f g h i j)
+// (@ @ @ @ @ a b c d e f g h i j @)
+// (@ @ @ @ a b c d e f g h i j @ @)
+// (@ @ @ (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) @ @ @)
+// (@ @ a b c d e f g h i j @ @ @ @)
+// (@ a b c d e f g h i j @ @ @ @ @)
+// (a b c d e f g h i j @ @ @ @ @ @)
+// );
+//
+// which gets transposed and expanded to this:
+//
+// quote_token_with_context!(_s @ @ @ @ @ @ a);
+// quote_token_with_context!(_s @ @ @ @ @ a b);
+// quote_token_with_context!(_s @ @ @ @ a b c);
+// quote_token_with_context!(_s @ @ @ (a) b c d);
+// quote_token_with_context!(_s @ @ a (b) c d e);
+// quote_token_with_context!(_s @ a b (c) d e f);
+// quote_token_with_context!(_s a b c (d) e f g);
+// quote_token_with_context!(_s b c d (e) f g h);
+// quote_token_with_context!(_s c d e (f) g h i);
+// quote_token_with_context!(_s d e f (g) h i j);
+// quote_token_with_context!(_s e f g (h) i j @);
+// quote_token_with_context!(_s f g h (i) j @ @);
+// quote_token_with_context!(_s g h i (j) @ @ @);
+// quote_token_with_context!(_s h i j @ @ @ @);
+// quote_token_with_context!(_s i j @ @ @ @ @);
+// quote_token_with_context!(_s j @ @ @ @ @ @);
+//
+// Without having used muncher-style recursion, we get one invocation of
+// quote_token_with_context for each original tt, with three tts of context on
+// either side. This is enough for the longest possible interpolation form (a
+// repetition with separator, as in `# (#var) , *`) to be fully represented with
+// the first or last tt in the middle.
+//
+// The middle tt (surrounded by parentheses) is the tt being processed.
+//
+// - When it is a `#`, quote_token_with_context can do an interpolation. The
+// interpolation kind will depend on the three subsequent tts.
+//
+// - When it is within a later part of an interpolation, it can be ignored
+// because the interpolation has already been done.
+//
+// - When it is not part of an interpolation it can be pushed as a single
+// token into the output.
+//
+// - When the middle token is an unparenthesized `@`, that call is one of the
+// first 3 or last 3 calls of quote_token_with_context and does not
+// correspond to one of the original input tokens, so turns into nothing.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_each_token {
+ ($tokens:ident $($tts:tt)*) => {
+ $crate::quote_tokens_with_context!{$tokens
+ (@ @ @ @ @ @ $($tts)*)
+ (@ @ @ @ @ $($tts)* @)
+ (@ @ @ @ $($tts)* @ @)
+ (@ @ @ $(($tts))* @ @ @)
+ (@ @ $($tts)* @ @ @ @)
+ (@ $($tts)* @ @ @ @ @)
+ ($($tts)* @ @ @ @ @ @)
+ }
+ };
+}
+
+// See the explanation on quote_each_token.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_each_token_spanned {
+ ($tokens:ident $span:ident $($tts:tt)*) => {
+ $crate::quote_tokens_with_context_spanned!{$tokens $span
+ (@ @ @ @ @ @ $($tts)*)
+ (@ @ @ @ @ $($tts)* @)
+ (@ @ @ @ $($tts)* @ @)
+ (@ @ @ $(($tts))* @ @ @)
+ (@ @ $($tts)* @ @ @ @)
+ (@ $($tts)* @ @ @ @ @)
+ ($($tts)* @ @ @ @ @ @)
+ }
+ };
+}
+
+// See the explanation on quote_each_token.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_tokens_with_context {
+ ($tokens:ident
+ ($($b3:tt)*) ($($b2:tt)*) ($($b1:tt)*)
+ ($($curr:tt)*)
+ ($($a1:tt)*) ($($a2:tt)*) ($($a3:tt)*)
+ ) => {
+ $(
+ $crate::quote_token_with_context!{$tokens $b3 $b2 $b1 $curr $a1 $a2 $a3}
+ )*
+ };
+}
+
+// See the explanation on quote_each_token.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_tokens_with_context_spanned {
+ ($tokens:ident $span:ident
+ ($($b3:tt)*) ($($b2:tt)*) ($($b1:tt)*)
+ ($($curr:tt)*)
+ ($($a1:tt)*) ($($a2:tt)*) ($($a3:tt)*)
+ ) => {
+ $(
+ $crate::quote_token_with_context_spanned!{$tokens $span $b3 $b2 $b1 $curr $a1 $a2 $a3}
+ )*
+ };
+}
+
+// See the explanation on quote_each_token.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_token_with_context {
+ // Unparenthesized `@` indicates this call does not correspond to one of the
+ // original input tokens. Ignore it.
+ ($tokens:ident $b3:tt $b2:tt $b1:tt @ $a1:tt $a2:tt $a3:tt) => {};
+
+ // A repetition with no separator.
+ ($tokens:ident $b3:tt $b2:tt $b1:tt (#) ( $($inner:tt)* ) * $a3:tt) => {{
+ use $crate::__private::ext::*;
+ let has_iter = $crate::__private::ThereIsNoIteratorInRepetition;
+ $crate::pounded_var_names!{quote_bind_into_iter!(has_iter) () $($inner)*}
+ let _: $crate::__private::HasIterator = has_iter;
+ // This is `while true` instead of `loop` because if there are no
+ // iterators used inside of this repetition then the body would not
+ // contain any `break`, so the compiler would emit unreachable code
+ // warnings on anything below the loop. We use has_iter to detect and
+ // fail to compile when there are no iterators, so here we just work
+ // around the unneeded extra warning.
+ while true {
+ $crate::pounded_var_names!{quote_bind_next_or_break!() () $($inner)*}
+ $crate::quote_each_token!{$tokens $($inner)*}
+ }
+ }};
+ // ... and one step later.
+ ($tokens:ident $b3:tt $b2:tt # (( $($inner:tt)* )) * $a2:tt $a3:tt) => {};
+ // ... and one step later.
+ ($tokens:ident $b3:tt # ( $($inner:tt)* ) (*) $a1:tt $a2:tt $a3:tt) => {};
+
+ // A repetition with separator.
+ ($tokens:ident $b3:tt $b2:tt $b1:tt (#) ( $($inner:tt)* ) $sep:tt *) => {{
+ use $crate::__private::ext::*;
+ let mut _i = 0usize;
+ let has_iter = $crate::__private::ThereIsNoIteratorInRepetition;
+ $crate::pounded_var_names!{quote_bind_into_iter!(has_iter) () $($inner)*}
+ let _: $crate::__private::HasIterator = has_iter;
+ while true {
+ $crate::pounded_var_names!{quote_bind_next_or_break!() () $($inner)*}
+ if _i > 0 {
+ $crate::quote_token!{$sep $tokens}
+ }
+ _i += 1;
+ $crate::quote_each_token!{$tokens $($inner)*}
+ }
+ }};
+ // ... and one step later.
+ ($tokens:ident $b3:tt $b2:tt # (( $($inner:tt)* )) $sep:tt * $a3:tt) => {};
+ // ... and one step later.
+ ($tokens:ident $b3:tt # ( $($inner:tt)* ) ($sep:tt) * $a2:tt $a3:tt) => {};
+ // (A special case for `#(var)**`, where the first `*` is treated as the
+ // repetition symbol and the second `*` is treated as an ordinary token.)
+ ($tokens:ident # ( $($inner:tt)* ) * (*) $a1:tt $a2:tt $a3:tt) => {
+ // https://github.com/dtolnay/quote/issues/130
+ $crate::quote_token!{* $tokens}
+ };
+ // ... and one step later.
+ ($tokens:ident # ( $($inner:tt)* ) $sep:tt (*) $a1:tt $a2:tt $a3:tt) => {};
+
+ // A non-repetition interpolation.
+ ($tokens:ident $b3:tt $b2:tt $b1:tt (#) $var:ident $a2:tt $a3:tt) => {
+ $crate::ToTokens::to_tokens(&$var, &mut $tokens);
+ };
+ // ... and one step later.
+ ($tokens:ident $b3:tt $b2:tt # ($var:ident) $a1:tt $a2:tt $a3:tt) => {};
+
+ // An ordinary token, not part of any interpolation.
+ ($tokens:ident $b3:tt $b2:tt $b1:tt ($curr:tt) $a1:tt $a2:tt $a3:tt) => {
+ $crate::quote_token!{$curr $tokens}
+ };
+}
+
+// See the explanation on quote_each_token, and on the individual rules of
+// quote_token_with_context.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_token_with_context_spanned {
+ ($tokens:ident $span:ident $b3:tt $b2:tt $b1:tt @ $a1:tt $a2:tt $a3:tt) => {};
+
+ ($tokens:ident $span:ident $b3:tt $b2:tt $b1:tt (#) ( $($inner:tt)* ) * $a3:tt) => {{
+ use $crate::__private::ext::*;
+ let has_iter = $crate::__private::ThereIsNoIteratorInRepetition;
+ $crate::pounded_var_names!{quote_bind_into_iter!(has_iter) () $($inner)*}
+ let _: $crate::__private::HasIterator = has_iter;
+ while true {
+ $crate::pounded_var_names!{quote_bind_next_or_break!() () $($inner)*}
+ $crate::quote_each_token_spanned!{$tokens $span $($inner)*}
+ }
+ }};
+ ($tokens:ident $span:ident $b3:tt $b2:tt # (( $($inner:tt)* )) * $a2:tt $a3:tt) => {};
+ ($tokens:ident $span:ident $b3:tt # ( $($inner:tt)* ) (*) $a1:tt $a2:tt $a3:tt) => {};
+
+ ($tokens:ident $span:ident $b3:tt $b2:tt $b1:tt (#) ( $($inner:tt)* ) $sep:tt *) => {{
+ use $crate::__private::ext::*;
+ let mut _i = 0usize;
+ let has_iter = $crate::__private::ThereIsNoIteratorInRepetition;
+ $crate::pounded_var_names!{quote_bind_into_iter!(has_iter) () $($inner)*}
+ let _: $crate::__private::HasIterator = has_iter;
+ while true {
+ $crate::pounded_var_names!{quote_bind_next_or_break!() () $($inner)*}
+ if _i > 0 {
+ $crate::quote_token_spanned!{$sep $tokens $span}
+ }
+ _i += 1;
+ $crate::quote_each_token_spanned!{$tokens $span $($inner)*}
+ }
+ }};
+ ($tokens:ident $span:ident $b3:tt $b2:tt # (( $($inner:tt)* )) $sep:tt * $a3:tt) => {};
+ ($tokens:ident $span:ident $b3:tt # ( $($inner:tt)* ) ($sep:tt) * $a2:tt $a3:tt) => {};
+ ($tokens:ident $span:ident # ( $($inner:tt)* ) * (*) $a1:tt $a2:tt $a3:tt) => {
+ // https://github.com/dtolnay/quote/issues/130
+ $crate::quote_token_spanned!{* $tokens $span}
+ };
+ ($tokens:ident $span:ident # ( $($inner:tt)* ) $sep:tt (*) $a1:tt $a2:tt $a3:tt) => {};
+
+ ($tokens:ident $span:ident $b3:tt $b2:tt $b1:tt (#) $var:ident $a2:tt $a3:tt) => {
+ $crate::ToTokens::to_tokens(&$var, &mut $tokens);
+ };
+ ($tokens:ident $span:ident $b3:tt $b2:tt # ($var:ident) $a1:tt $a2:tt $a3:tt) => {};
+
+ ($tokens:ident $span:ident $b3:tt $b2:tt $b1:tt ($curr:tt) $a1:tt $a2:tt $a3:tt) => {
+ $crate::quote_token_spanned!{$curr $tokens $span}
+ };
+}
+
+// These rules are ordered by approximate token frequency, at least for the
+// first 10 or so, to improve compile times. Having `ident` first is by far the
+// most important because it's typically 2-3x more common than the next most
+// common token.
+//
+// Separately, we put the token being matched in the very front so that failing
+// rules may fail to match as quickly as possible.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_token {
+ ($ident:ident $tokens:ident) => {
+ $crate::__private::push_ident(&mut $tokens, stringify!($ident));
+ };
+
+ (:: $tokens:ident) => {
+ $crate::__private::push_colon2(&mut $tokens);
+ };
+
+ (( $($inner:tt)* ) $tokens:ident) => {
+ $crate::__private::push_group(
+ &mut $tokens,
+ $crate::__private::Delimiter::Parenthesis,
+ $crate::quote!($($inner)*),
+ );
+ };
+
+ ([ $($inner:tt)* ] $tokens:ident) => {
+ $crate::__private::push_group(
+ &mut $tokens,
+ $crate::__private::Delimiter::Bracket,
+ $crate::quote!($($inner)*),
+ );
+ };
+
+ ({ $($inner:tt)* } $tokens:ident) => {
+ $crate::__private::push_group(
+ &mut $tokens,
+ $crate::__private::Delimiter::Brace,
+ $crate::quote!($($inner)*),
+ );
+ };
+
+ (# $tokens:ident) => {
+ $crate::__private::push_pound(&mut $tokens);
+ };
+
+ (, $tokens:ident) => {
+ $crate::__private::push_comma(&mut $tokens);
+ };
+
+ (. $tokens:ident) => {
+ $crate::__private::push_dot(&mut $tokens);
+ };
+
+ (; $tokens:ident) => {
+ $crate::__private::push_semi(&mut $tokens);
+ };
+
+ (: $tokens:ident) => {
+ $crate::__private::push_colon(&mut $tokens);
+ };
+
+ (+ $tokens:ident) => {
+ $crate::__private::push_add(&mut $tokens);
+ };
+
+ (+= $tokens:ident) => {
+ $crate::__private::push_add_eq(&mut $tokens);
+ };
+
+ (& $tokens:ident) => {
+ $crate::__private::push_and(&mut $tokens);
+ };
+
+ (&& $tokens:ident) => {
+ $crate::__private::push_and_and(&mut $tokens);
+ };
+
+ (&= $tokens:ident) => {
+ $crate::__private::push_and_eq(&mut $tokens);
+ };
+
+ (@ $tokens:ident) => {
+ $crate::__private::push_at(&mut $tokens);
+ };
+
+ (! $tokens:ident) => {
+ $crate::__private::push_bang(&mut $tokens);
+ };
+
+ (^ $tokens:ident) => {
+ $crate::__private::push_caret(&mut $tokens);
+ };
+
+ (^= $tokens:ident) => {
+ $crate::__private::push_caret_eq(&mut $tokens);
+ };
+
+ (/ $tokens:ident) => {
+ $crate::__private::push_div(&mut $tokens);
+ };
+
+ (/= $tokens:ident) => {
+ $crate::__private::push_div_eq(&mut $tokens);
+ };
+
+ (.. $tokens:ident) => {
+ $crate::__private::push_dot2(&mut $tokens);
+ };
+
+ (... $tokens:ident) => {
+ $crate::__private::push_dot3(&mut $tokens);
+ };
+
+ (..= $tokens:ident) => {
+ $crate::__private::push_dot_dot_eq(&mut $tokens);
+ };
+
+ (= $tokens:ident) => {
+ $crate::__private::push_eq(&mut $tokens);
+ };
+
+ (== $tokens:ident) => {
+ $crate::__private::push_eq_eq(&mut $tokens);
+ };
+
+ (>= $tokens:ident) => {
+ $crate::__private::push_ge(&mut $tokens);
+ };
+
+ (> $tokens:ident) => {
+ $crate::__private::push_gt(&mut $tokens);
+ };
+
+ (<= $tokens:ident) => {
+ $crate::__private::push_le(&mut $tokens);
+ };
+
+ (< $tokens:ident) => {
+ $crate::__private::push_lt(&mut $tokens);
+ };
+
+ (*= $tokens:ident) => {
+ $crate::__private::push_mul_eq(&mut $tokens);
+ };
+
+ (!= $tokens:ident) => {
+ $crate::__private::push_ne(&mut $tokens);
+ };
+
+ (| $tokens:ident) => {
+ $crate::__private::push_or(&mut $tokens);
+ };
+
+ (|= $tokens:ident) => {
+ $crate::__private::push_or_eq(&mut $tokens);
+ };
+
+ (|| $tokens:ident) => {
+ $crate::__private::push_or_or(&mut $tokens);
+ };
+
+ (? $tokens:ident) => {
+ $crate::__private::push_question(&mut $tokens);
+ };
+
+ (-> $tokens:ident) => {
+ $crate::__private::push_rarrow(&mut $tokens);
+ };
+
+ (<- $tokens:ident) => {
+ $crate::__private::push_larrow(&mut $tokens);
+ };
+
+ (% $tokens:ident) => {
+ $crate::__private::push_rem(&mut $tokens);
+ };
+
+ (%= $tokens:ident) => {
+ $crate::__private::push_rem_eq(&mut $tokens);
+ };
+
+ (=> $tokens:ident) => {
+ $crate::__private::push_fat_arrow(&mut $tokens);
+ };
+
+ (<< $tokens:ident) => {
+ $crate::__private::push_shl(&mut $tokens);
+ };
+
+ (<<= $tokens:ident) => {
+ $crate::__private::push_shl_eq(&mut $tokens);
+ };
+
+ (>> $tokens:ident) => {
+ $crate::__private::push_shr(&mut $tokens);
+ };
+
+ (>>= $tokens:ident) => {
+ $crate::__private::push_shr_eq(&mut $tokens);
+ };
+
+ (* $tokens:ident) => {
+ $crate::__private::push_star(&mut $tokens);
+ };
+
+ (- $tokens:ident) => {
+ $crate::__private::push_sub(&mut $tokens);
+ };
+
+ (-= $tokens:ident) => {
+ $crate::__private::push_sub_eq(&mut $tokens);
+ };
+
+ ($lifetime:lifetime $tokens:ident) => {
+ $crate::__private::push_lifetime(&mut $tokens, stringify!($lifetime));
+ };
+
+ (_ $tokens:ident) => {
+ $crate::__private::push_underscore(&mut $tokens);
+ };
+
+ ($other:tt $tokens:ident) => {
+ $crate::__private::parse(&mut $tokens, stringify!($other));
+ };
+}
+
+// See the comment above `quote_token!` about the rule ordering.
+#[macro_export]
+#[doc(hidden)]
+macro_rules! quote_token_spanned {
+ ($ident:ident $tokens:ident $span:ident) => {
+ $crate::__private::push_ident_spanned(&mut $tokens, $span, stringify!($ident));
+ };
+
+ (:: $tokens:ident $span:ident) => {
+ $crate::__private::push_colon2_spanned(&mut $tokens, $span);
+ };
+
+ (( $($inner:tt)* ) $tokens:ident $span:ident) => {
+ $crate::__private::push_group_spanned(
+ &mut $tokens,
+ $span,
+ $crate::__private::Delimiter::Parenthesis,
+ $crate::quote_spanned!($span=> $($inner)*),
+ );
+ };
+
+ ([ $($inner:tt)* ] $tokens:ident $span:ident) => {
+ $crate::__private::push_group_spanned(
+ &mut $tokens,
+ $span,
+ $crate::__private::Delimiter::Bracket,
+ $crate::quote_spanned!($span=> $($inner)*),
+ );
+ };
+
+ ({ $($inner:tt)* } $tokens:ident $span:ident) => {
+ $crate::__private::push_group_spanned(
+ &mut $tokens,
+ $span,
+ $crate::__private::Delimiter::Brace,
+ $crate::quote_spanned!($span=> $($inner)*),
+ );
+ };
+
+ (# $tokens:ident $span:ident) => {
+ $crate::__private::push_pound_spanned(&mut $tokens, $span);
+ };
+
+ (, $tokens:ident $span:ident) => {
+ $crate::__private::push_comma_spanned(&mut $tokens, $span);
+ };
+
+ (. $tokens:ident $span:ident) => {
+ $crate::__private::push_dot_spanned(&mut $tokens, $span);
+ };
+
+ (; $tokens:ident $span:ident) => {
+ $crate::__private::push_semi_spanned(&mut $tokens, $span);
+ };
+
+ (: $tokens:ident $span:ident) => {
+ $crate::__private::push_colon_spanned(&mut $tokens, $span);
+ };
+
+ (+ $tokens:ident $span:ident) => {
+ $crate::__private::push_add_spanned(&mut $tokens, $span);
+ };
+
+ (+= $tokens:ident $span:ident) => {
+ $crate::__private::push_add_eq_spanned(&mut $tokens, $span);
+ };
+
+ (& $tokens:ident $span:ident) => {
+ $crate::__private::push_and_spanned(&mut $tokens, $span);
+ };
+
+ (&& $tokens:ident $span:ident) => {
+ $crate::__private::push_and_and_spanned(&mut $tokens, $span);
+ };
+
+ (&= $tokens:ident $span:ident) => {
+ $crate::__private::push_and_eq_spanned(&mut $tokens, $span);
+ };
+
+ (@ $tokens:ident $span:ident) => {
+ $crate::__private::push_at_spanned(&mut $tokens, $span);
+ };
+
+ (! $tokens:ident $span:ident) => {
+ $crate::__private::push_bang_spanned(&mut $tokens, $span);
+ };
+
+ (^ $tokens:ident $span:ident) => {
+ $crate::__private::push_caret_spanned(&mut $tokens, $span);
+ };
+
+ (^= $tokens:ident $span:ident) => {
+ $crate::__private::push_caret_eq_spanned(&mut $tokens, $span);
+ };
+
+ (/ $tokens:ident $span:ident) => {
+ $crate::__private::push_div_spanned(&mut $tokens, $span);
+ };
+
+ (/= $tokens:ident $span:ident) => {
+ $crate::__private::push_div_eq_spanned(&mut $tokens, $span);
+ };
+
+ (.. $tokens:ident $span:ident) => {
+ $crate::__private::push_dot2_spanned(&mut $tokens, $span);
+ };
+
+ (... $tokens:ident $span:ident) => {
+ $crate::__private::push_dot3_spanned(&mut $tokens, $span);
+ };
+
+ (..= $tokens:ident $span:ident) => {
+ $crate::__private::push_dot_dot_eq_spanned(&mut $tokens, $span);
+ };
+
+ (= $tokens:ident $span:ident) => {
+ $crate::__private::push_eq_spanned(&mut $tokens, $span);
+ };
+
+ (== $tokens:ident $span:ident) => {
+ $crate::__private::push_eq_eq_spanned(&mut $tokens, $span);
+ };
+
+ (>= $tokens:ident $span:ident) => {
+ $crate::__private::push_ge_spanned(&mut $tokens, $span);
+ };
+
+ (> $tokens:ident $span:ident) => {
+ $crate::__private::push_gt_spanned(&mut $tokens, $span);
+ };
+
+ (<= $tokens:ident $span:ident) => {
+ $crate::__private::push_le_spanned(&mut $tokens, $span);
+ };
+
+ (< $tokens:ident $span:ident) => {
+ $crate::__private::push_lt_spanned(&mut $tokens, $span);
+ };
+
+ (*= $tokens:ident $span:ident) => {
+ $crate::__private::push_mul_eq_spanned(&mut $tokens, $span);
+ };
+
+ (!= $tokens:ident $span:ident) => {
+ $crate::__private::push_ne_spanned(&mut $tokens, $span);
+ };
+
+ (| $tokens:ident $span:ident) => {
+ $crate::__private::push_or_spanned(&mut $tokens, $span);
+ };
+
+ (|= $tokens:ident $span:ident) => {
+ $crate::__private::push_or_eq_spanned(&mut $tokens, $span);
+ };
+
+ (|| $tokens:ident $span:ident) => {
+ $crate::__private::push_or_or_spanned(&mut $tokens, $span);
+ };
+
+ (? $tokens:ident $span:ident) => {
+ $crate::__private::push_question_spanned(&mut $tokens, $span);
+ };
+
+ (-> $tokens:ident $span:ident) => {
+ $crate::__private::push_rarrow_spanned(&mut $tokens, $span);
+ };
+
+ (<- $tokens:ident $span:ident) => {
+ $crate::__private::push_larrow_spanned(&mut $tokens, $span);
+ };
+
+ (% $tokens:ident $span:ident) => {
+ $crate::__private::push_rem_spanned(&mut $tokens, $span);
+ };
+
+ (%= $tokens:ident $span:ident) => {
+ $crate::__private::push_rem_eq_spanned(&mut $tokens, $span);
+ };
+
+ (=> $tokens:ident $span:ident) => {
+ $crate::__private::push_fat_arrow_spanned(&mut $tokens, $span);
+ };
+
+ (<< $tokens:ident $span:ident) => {
+ $crate::__private::push_shl_spanned(&mut $tokens, $span);
+ };
+
+ (<<= $tokens:ident $span:ident) => {
+ $crate::__private::push_shl_eq_spanned(&mut $tokens, $span);
+ };
+
+ (>> $tokens:ident $span:ident) => {
+ $crate::__private::push_shr_spanned(&mut $tokens, $span);
+ };
+
+ (>>= $tokens:ident $span:ident) => {
+ $crate::__private::push_shr_eq_spanned(&mut $tokens, $span);
+ };
+
+ (* $tokens:ident $span:ident) => {
+ $crate::__private::push_star_spanned(&mut $tokens, $span);
+ };
+
+ (- $tokens:ident $span:ident) => {
+ $crate::__private::push_sub_spanned(&mut $tokens, $span);
+ };
+
+ (-= $tokens:ident $span:ident) => {
+ $crate::__private::push_sub_eq_spanned(&mut $tokens, $span);
+ };
+
+ ($lifetime:lifetime $tokens:ident $span:ident) => {
+ $crate::__private::push_lifetime_spanned(&mut $tokens, $span, stringify!($lifetime));
+ };
+
+ (_ $tokens:ident $span:ident) => {
+ $crate::__private::push_underscore_spanned(&mut $tokens, $span);
+ };
+
+ ($other:tt $tokens:ident $span:ident) => {
+ $crate::__private::parse_spanned(&mut $tokens, $span, stringify!($other));
+ };
+}
diff --git a/rust/quote/runtime.rs b/rust/quote/runtime.rs
new file mode 100644
index 000000000000..f3cdded3afb2
--- /dev/null
+++ b/rust/quote/runtime.rs
@@ -0,0 +1,438 @@
+use crate::{IdentFragment, ToTokens, TokenStreamExt};
+use core::fmt;
+use core::iter;
+use core::ops::BitOr;
+
+pub use core::option::Option;
+pub use proc_macro2::*;
+pub use std::format;
+
+pub struct HasIterator; // True
+pub struct ThereIsNoIteratorInRepetition; // False
+
+impl BitOr<ThereIsNoIteratorInRepetition> for ThereIsNoIteratorInRepetition {
+ type Output = ThereIsNoIteratorInRepetition;
+ fn bitor(self, _rhs: ThereIsNoIteratorInRepetition) -> ThereIsNoIteratorInRepetition {
+ ThereIsNoIteratorInRepetition
+ }
+}
+
+impl BitOr<ThereIsNoIteratorInRepetition> for HasIterator {
+ type Output = HasIterator;
+ fn bitor(self, _rhs: ThereIsNoIteratorInRepetition) -> HasIterator {
+ HasIterator
+ }
+}
+
+impl BitOr<HasIterator> for ThereIsNoIteratorInRepetition {
+ type Output = HasIterator;
+ fn bitor(self, _rhs: HasIterator) -> HasIterator {
+ HasIterator
+ }
+}
+
+impl BitOr<HasIterator> for HasIterator {
+ type Output = HasIterator;
+ fn bitor(self, _rhs: HasIterator) -> HasIterator {
+ HasIterator
+ }
+}
+
+/// Extension traits used by the implementation of `quote!`. These are defined
+/// in separate traits, rather than as a single trait due to ambiguity issues.
+///
+/// These traits expose a `quote_into_iter` method which should allow calling
+/// whichever impl happens to be applicable. Calling that method repeatedly on
+/// the returned value should be idempotent.
+pub mod ext {
+ use super::RepInterp;
+ use super::{HasIterator as HasIter, ThereIsNoIteratorInRepetition as DoesNotHaveIter};
+ use crate::ToTokens;
+ use core::slice;
+ use std::collections::btree_set::{self, BTreeSet};
+
+ /// Extension trait providing the `quote_into_iter` method on iterators.
+ pub trait RepIteratorExt: Iterator + Sized {
+ fn quote_into_iter(self) -> (Self, HasIter) {
+ (self, HasIter)
+ }
+ }
+
+ impl<T: Iterator> RepIteratorExt for T {}
+
+ /// Extension trait providing the `quote_into_iter` method for
+ /// non-iterable types. These types interpolate the same value in each
+ /// iteration of the repetition.
+ pub trait RepToTokensExt {
+ /// Pretend to be an iterator for the purposes of `quote_into_iter`.
+ /// This allows repeated calls to `quote_into_iter` to continue
+ /// correctly returning DoesNotHaveIter.
+ fn next(&self) -> Option<&Self> {
+ Some(self)
+ }
+
+ fn quote_into_iter(&self) -> (&Self, DoesNotHaveIter) {
+ (self, DoesNotHaveIter)
+ }
+ }
+
+ impl<T: ToTokens + ?Sized> RepToTokensExt for T {}
+
+ /// Extension trait providing the `quote_into_iter` method for types that
+ /// can be referenced as an iterator.
+ pub trait RepAsIteratorExt<'q> {
+ type Iter: Iterator;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter);
+ }
+
+ impl<'q, 'a, T: RepAsIteratorExt<'q> + ?Sized> RepAsIteratorExt<'q> for &'a T {
+ type Iter = T::Iter;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter) {
+ <T as RepAsIteratorExt>::quote_into_iter(*self)
+ }
+ }
+
+ impl<'q, 'a, T: RepAsIteratorExt<'q> + ?Sized> RepAsIteratorExt<'q> for &'a mut T {
+ type Iter = T::Iter;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter) {
+ <T as RepAsIteratorExt>::quote_into_iter(*self)
+ }
+ }
+
+ impl<'q, T: 'q> RepAsIteratorExt<'q> for [T] {
+ type Iter = slice::Iter<'q, T>;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter) {
+ (self.iter(), HasIter)
+ }
+ }
+
+ impl<'q, T: 'q> RepAsIteratorExt<'q> for Vec<T> {
+ type Iter = slice::Iter<'q, T>;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter) {
+ (self.iter(), HasIter)
+ }
+ }
+
+ impl<'q, T: 'q> RepAsIteratorExt<'q> for BTreeSet<T> {
+ type Iter = btree_set::Iter<'q, T>;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter) {
+ (self.iter(), HasIter)
+ }
+ }
+
+ impl<'q, T: RepAsIteratorExt<'q>> RepAsIteratorExt<'q> for RepInterp<T> {
+ type Iter = T::Iter;
+
+ fn quote_into_iter(&'q self) -> (Self::Iter, HasIter) {
+ self.0.quote_into_iter()
+ }
+ }
+}
+
+// Helper type used within interpolations to allow for repeated binding names.
+// Implements the relevant traits, and exports a dummy `next()` method.
+#[derive(Copy, Clone)]
+pub struct RepInterp<T>(pub T);
+
+impl<T> RepInterp<T> {
+ // This method is intended to look like `Iterator::next`, and is called when
+ // a name is bound multiple times, as the previous binding will shadow the
+ // original `Iterator` object. This allows us to avoid advancing the
+ // iterator multiple times per iteration.
+ pub fn next(self) -> Option<T> {
+ Some(self.0)
+ }
+}
+
+impl<T: Iterator> Iterator for RepInterp<T> {
+ type Item = T::Item;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.0.next()
+ }
+}
+
+impl<T: ToTokens> ToTokens for RepInterp<T> {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ self.0.to_tokens(tokens);
+ }
+}
+
+pub fn push_group(tokens: &mut TokenStream, delimiter: Delimiter, inner: TokenStream) {
+ tokens.append(Group::new(delimiter, inner));
+}
+
+pub fn push_group_spanned(
+ tokens: &mut TokenStream,
+ span: Span,
+ delimiter: Delimiter,
+ inner: TokenStream,
+) {
+ let mut g = Group::new(delimiter, inner);
+ g.set_span(span);
+ tokens.append(g);
+}
+
+pub fn parse(tokens: &mut TokenStream, s: &str) {
+ let s: TokenStream = s.parse().expect("invalid token stream");
+ tokens.extend(iter::once(s));
+}
+
+pub fn parse_spanned(tokens: &mut TokenStream, span: Span, s: &str) {
+ let s: TokenStream = s.parse().expect("invalid token stream");
+ tokens.extend(s.into_iter().map(|t| respan_token_tree(t, span)));
+}
+
+// Token tree with every span replaced by the given one.
+fn respan_token_tree(mut token: TokenTree, span: Span) -> TokenTree {
+ match &mut token {
+ TokenTree::Group(g) => {
+ let stream = g
+ .stream()
+ .into_iter()
+ .map(|token| respan_token_tree(token, span))
+ .collect();
+ *g = Group::new(g.delimiter(), stream);
+ g.set_span(span);
+ }
+ other => other.set_span(span),
+ }
+ token
+}
+
+pub fn push_ident(tokens: &mut TokenStream, s: &str) {
+ let span = Span::call_site();
+ push_ident_spanned(tokens, span, s);
+}
+
+pub fn push_ident_spanned(tokens: &mut TokenStream, span: Span, s: &str) {
+ tokens.append(ident_maybe_raw(s, span));
+}
+
+pub fn push_lifetime(tokens: &mut TokenStream, lifetime: &str) {
+ struct Lifetime<'a> {
+ name: &'a str,
+ state: u8,
+ }
+
+ impl<'a> Iterator for Lifetime<'a> {
+ type Item = TokenTree;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ match self.state {
+ 0 => {
+ self.state = 1;
+ Some(TokenTree::Punct(Punct::new('\'', Spacing::Joint)))
+ }
+ 1 => {
+ self.state = 2;
+ Some(TokenTree::Ident(Ident::new(self.name, Span::call_site())))
+ }
+ _ => None,
+ }
+ }
+ }
+
+ tokens.extend(Lifetime {
+ name: &lifetime[1..],
+ state: 0,
+ });
+}
+
+pub fn push_lifetime_spanned(tokens: &mut TokenStream, span: Span, lifetime: &str) {
+ struct Lifetime<'a> {
+ name: &'a str,
+ span: Span,
+ state: u8,
+ }
+
+ impl<'a> Iterator for Lifetime<'a> {
+ type Item = TokenTree;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ match self.state {
+ 0 => {
+ self.state = 1;
+ let mut apostrophe = Punct::new('\'', Spacing::Joint);
+ apostrophe.set_span(self.span);
+ Some(TokenTree::Punct(apostrophe))
+ }
+ 1 => {
+ self.state = 2;
+ Some(TokenTree::Ident(Ident::new(self.name, self.span)))
+ }
+ _ => None,
+ }
+ }
+ }
+
+ tokens.extend(Lifetime {
+ name: &lifetime[1..],
+ span,
+ state: 0,
+ });
+}
+
+macro_rules! push_punct {
+ ($name:ident $spanned:ident $char1:tt) => {
+ pub fn $name(tokens: &mut TokenStream) {
+ tokens.append(Punct::new($char1, Spacing::Alone));
+ }
+ pub fn $spanned(tokens: &mut TokenStream, span: Span) {
+ let mut punct = Punct::new($char1, Spacing::Alone);
+ punct.set_span(span);
+ tokens.append(punct);
+ }
+ };
+ ($name:ident $spanned:ident $char1:tt $char2:tt) => {
+ pub fn $name(tokens: &mut TokenStream) {
+ tokens.append(Punct::new($char1, Spacing::Joint));
+ tokens.append(Punct::new($char2, Spacing::Alone));
+ }
+ pub fn $spanned(tokens: &mut TokenStream, span: Span) {
+ let mut punct = Punct::new($char1, Spacing::Joint);
+ punct.set_span(span);
+ tokens.append(punct);
+ let mut punct = Punct::new($char2, Spacing::Alone);
+ punct.set_span(span);
+ tokens.append(punct);
+ }
+ };
+ ($name:ident $spanned:ident $char1:tt $char2:tt $char3:tt) => {
+ pub fn $name(tokens: &mut TokenStream) {
+ tokens.append(Punct::new($char1, Spacing::Joint));
+ tokens.append(Punct::new($char2, Spacing::Joint));
+ tokens.append(Punct::new($char3, Spacing::Alone));
+ }
+ pub fn $spanned(tokens: &mut TokenStream, span: Span) {
+ let mut punct = Punct::new($char1, Spacing::Joint);
+ punct.set_span(span);
+ tokens.append(punct);
+ let mut punct = Punct::new($char2, Spacing::Joint);
+ punct.set_span(span);
+ tokens.append(punct);
+ let mut punct = Punct::new($char3, Spacing::Alone);
+ punct.set_span(span);
+ tokens.append(punct);
+ }
+ };
+}
+
+push_punct!(push_add push_add_spanned '+');
+push_punct!(push_add_eq push_add_eq_spanned '+' '=');
+push_punct!(push_and push_and_spanned '&');
+push_punct!(push_and_and push_and_and_spanned '&' '&');
+push_punct!(push_and_eq push_and_eq_spanned '&' '=');
+push_punct!(push_at push_at_spanned '@');
+push_punct!(push_bang push_bang_spanned '!');
+push_punct!(push_caret push_caret_spanned '^');
+push_punct!(push_caret_eq push_caret_eq_spanned '^' '=');
+push_punct!(push_colon push_colon_spanned ':');
+push_punct!(push_colon2 push_colon2_spanned ':' ':');
+push_punct!(push_comma push_comma_spanned ',');
+push_punct!(push_div push_div_spanned '/');
+push_punct!(push_div_eq push_div_eq_spanned '/' '=');
+push_punct!(push_dot push_dot_spanned '.');
+push_punct!(push_dot2 push_dot2_spanned '.' '.');
+push_punct!(push_dot3 push_dot3_spanned '.' '.' '.');
+push_punct!(push_dot_dot_eq push_dot_dot_eq_spanned '.' '.' '=');
+push_punct!(push_eq push_eq_spanned '=');
+push_punct!(push_eq_eq push_eq_eq_spanned '=' '=');
+push_punct!(push_ge push_ge_spanned '>' '=');
+push_punct!(push_gt push_gt_spanned '>');
+push_punct!(push_le push_le_spanned '<' '=');
+push_punct!(push_lt push_lt_spanned '<');
+push_punct!(push_mul_eq push_mul_eq_spanned '*' '=');
+push_punct!(push_ne push_ne_spanned '!' '=');
+push_punct!(push_or push_or_spanned '|');
+push_punct!(push_or_eq push_or_eq_spanned '|' '=');
+push_punct!(push_or_or push_or_or_spanned '|' '|');
+push_punct!(push_pound push_pound_spanned '#');
+push_punct!(push_question push_question_spanned '?');
+push_punct!(push_rarrow push_rarrow_spanned '-' '>');
+push_punct!(push_larrow push_larrow_spanned '<' '-');
+push_punct!(push_rem push_rem_spanned '%');
+push_punct!(push_rem_eq push_rem_eq_spanned '%' '=');
+push_punct!(push_fat_arrow push_fat_arrow_spanned '=' '>');
+push_punct!(push_semi push_semi_spanned ';');
+push_punct!(push_shl push_shl_spanned '<' '<');
+push_punct!(push_shl_eq push_shl_eq_spanned '<' '<' '=');
+push_punct!(push_shr push_shr_spanned '>' '>');
+push_punct!(push_shr_eq push_shr_eq_spanned '>' '>' '=');
+push_punct!(push_star push_star_spanned '*');
+push_punct!(push_sub push_sub_spanned '-');
+push_punct!(push_sub_eq push_sub_eq_spanned '-' '=');
+
+pub fn push_underscore(tokens: &mut TokenStream) {
+ push_underscore_spanned(tokens, Span::call_site());
+}
+
+pub fn push_underscore_spanned(tokens: &mut TokenStream, span: Span) {
+ tokens.append(Ident::new("_", span));
+}
+
+// Helper method for constructing identifiers from the `format_ident!` macro,
+// handling `r#` prefixes.
+pub fn mk_ident(id: &str, span: Option<Span>) -> Ident {
+ let span = span.unwrap_or_else(Span::call_site);
+ ident_maybe_raw(id, span)
+}
+
+fn ident_maybe_raw(id: &str, span: Span) -> Ident {
+ if id.starts_with("r#") {
+ Ident::new_raw(&id[2..], span)
+ } else {
+ Ident::new(id, span)
+ }
+}
+
+// Adapts from `IdentFragment` to `fmt::Display` for use by the `format_ident!`
+// macro, and exposes span information from these fragments.
+//
+// This struct also has forwarding implementations of the formatting traits
+// `Octal`, `LowerHex`, `UpperHex`, and `Binary` to allow for their use within
+// `format_ident!`.
+#[derive(Copy, Clone)]
+pub struct IdentFragmentAdapter<T: IdentFragment>(pub T);
+
+impl<T: IdentFragment> IdentFragmentAdapter<T> {
+ pub fn span(&self) -> Option<Span> {
+ self.0.span()
+ }
+}
+
+impl<T: IdentFragment> fmt::Display for IdentFragmentAdapter<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ IdentFragment::fmt(&self.0, f)
+ }
+}
+
+impl<T: IdentFragment + fmt::Octal> fmt::Octal for IdentFragmentAdapter<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::Octal::fmt(&self.0, f)
+ }
+}
+
+impl<T: IdentFragment + fmt::LowerHex> fmt::LowerHex for IdentFragmentAdapter<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::LowerHex::fmt(&self.0, f)
+ }
+}
+
+impl<T: IdentFragment + fmt::UpperHex> fmt::UpperHex for IdentFragmentAdapter<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::UpperHex::fmt(&self.0, f)
+ }
+}
+
+impl<T: IdentFragment + fmt::Binary> fmt::Binary for IdentFragmentAdapter<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::Binary::fmt(&self.0, f)
+ }
+}
diff --git a/rust/quote/spanned.rs b/rust/quote/spanned.rs
new file mode 100644
index 000000000000..f64c8f5dfec7
--- /dev/null
+++ b/rust/quote/spanned.rs
@@ -0,0 +1,43 @@
+use crate::ToTokens;
+use proc_macro2::{Span, TokenStream};
+
+pub trait Spanned {
+ fn __span(&self) -> Span;
+}
+
+impl Spanned for Span {
+ fn __span(&self) -> Span {
+ *self
+ }
+}
+
+impl<T: ?Sized + ToTokens> Spanned for T {
+ fn __span(&self) -> Span {
+ join_spans(self.into_token_stream())
+ }
+}
+
+fn join_spans(tokens: TokenStream) -> Span {
+ #[cfg(not(needs_invalid_span_workaround))]
+ let mut iter = tokens.into_iter().map(|tt| tt.span());
+
+ #[cfg(needs_invalid_span_workaround)]
+ let mut iter = tokens.into_iter().filter_map(|tt| {
+ let span = tt.span();
+ let debug = format!("{:?}", span);
+ if debug.ends_with("bytes(0..0)") {
+ None
+ } else {
+ Some(span)
+ }
+ });
+
+ let first = match iter.next() {
+ Some(span) => span,
+ None => return Span::call_site(),
+ };
+
+ iter.fold(None, |_prev, next| Some(next))
+ .and_then(|last| first.join(last))
+ .unwrap_or(first)
+}
diff --git a/rust/quote/to_tokens.rs b/rust/quote/to_tokens.rs
new file mode 100644
index 000000000000..57487217eeae
--- /dev/null
+++ b/rust/quote/to_tokens.rs
@@ -0,0 +1,209 @@
+use super::TokenStreamExt;
+use core::iter;
+use proc_macro2::{Group, Ident, Literal, Punct, Span, TokenStream, TokenTree};
+use std::borrow::Cow;
+use std::rc::Rc;
+
+/// Types that can be interpolated inside a `quote!` invocation.
+///
+/// [`quote!`]: macro.quote.html
+pub trait ToTokens {
+ /// Write `self` to the given `TokenStream`.
+ ///
+ /// The token append methods provided by the [`TokenStreamExt`] extension
+ /// trait may be useful for implementing `ToTokens`.
+ ///
+ /// [`TokenStreamExt`]: trait.TokenStreamExt.html
+ ///
+ /// # Example
+ ///
+ /// Example implementation for a struct representing Rust paths like
+ /// `std::cmp::PartialEq`:
+ ///
+ /// ```
+ /// use proc_macro2::{TokenTree, Spacing, Span, Punct, TokenStream};
+ /// use quote::{TokenStreamExt, ToTokens};
+ ///
+ /// pub struct Path {
+ /// pub global: bool,
+ /// pub segments: Vec<PathSegment>,
+ /// }
+ ///
+ /// impl ToTokens for Path {
+ /// fn to_tokens(&self, tokens: &mut TokenStream) {
+ /// for (i, segment) in self.segments.iter().enumerate() {
+ /// if i > 0 || self.global {
+ /// // Double colon `::`
+ /// tokens.append(Punct::new(':', Spacing::Joint));
+ /// tokens.append(Punct::new(':', Spacing::Alone));
+ /// }
+ /// segment.to_tokens(tokens);
+ /// }
+ /// }
+ /// }
+ /// #
+ /// # pub struct PathSegment;
+ /// #
+ /// # impl ToTokens for PathSegment {
+ /// # fn to_tokens(&self, tokens: &mut TokenStream) {
+ /// # unimplemented!()
+ /// # }
+ /// # }
+ /// ```
+ fn to_tokens(&self, tokens: &mut TokenStream);
+
+ /// Convert `self` directly into a `TokenStream` object.
+ ///
+ /// This method is implicitly implemented using `to_tokens`, and acts as a
+ /// convenience method for consumers of the `ToTokens` trait.
+ fn to_token_stream(&self) -> TokenStream {
+ let mut tokens = TokenStream::new();
+ self.to_tokens(&mut tokens);
+ tokens
+ }
+
+ /// Convert `self` directly into a `TokenStream` object.
+ ///
+ /// This method is implicitly implemented using `to_tokens`, and acts as a
+ /// convenience method for consumers of the `ToTokens` trait.
+ fn into_token_stream(self) -> TokenStream
+ where
+ Self: Sized,
+ {
+ self.to_token_stream()
+ }
+}
+
+impl<'a, T: ?Sized + ToTokens> ToTokens for &'a T {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ (**self).to_tokens(tokens);
+ }
+}
+
+impl<'a, T: ?Sized + ToTokens> ToTokens for &'a mut T {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ (**self).to_tokens(tokens);
+ }
+}
+
+impl<'a, T: ?Sized + ToOwned + ToTokens> ToTokens for Cow<'a, T> {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ (**self).to_tokens(tokens);
+ }
+}
+
+impl<T: ?Sized + ToTokens> ToTokens for Box<T> {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ (**self).to_tokens(tokens);
+ }
+}
+
+impl<T: ?Sized + ToTokens> ToTokens for Rc<T> {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ (**self).to_tokens(tokens);
+ }
+}
+
+impl<T: ToTokens> ToTokens for Option<T> {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ if let Some(ref t) = *self {
+ t.to_tokens(tokens);
+ }
+ }
+}
+
+impl ToTokens for str {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(Literal::string(self));
+ }
+}
+
+impl ToTokens for String {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ self.as_str().to_tokens(tokens);
+ }
+}
+
+macro_rules! primitive {
+ ($($t:ident => $name:ident)*) => {
+ $(
+ impl ToTokens for $t {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(Literal::$name(*self));
+ }
+ }
+ )*
+ };
+}
+
+primitive! {
+ i8 => i8_suffixed
+ i16 => i16_suffixed
+ i32 => i32_suffixed
+ i64 => i64_suffixed
+ i128 => i128_suffixed
+ isize => isize_suffixed
+
+ u8 => u8_suffixed
+ u16 => u16_suffixed
+ u32 => u32_suffixed
+ u64 => u64_suffixed
+ u128 => u128_suffixed
+ usize => usize_suffixed
+
+ f32 => f32_suffixed
+ f64 => f64_suffixed
+}
+
+impl ToTokens for char {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(Literal::character(*self));
+ }
+}
+
+impl ToTokens for bool {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ let word = if *self { "true" } else { "false" };
+ tokens.append(Ident::new(word, Span::call_site()));
+ }
+}
+
+impl ToTokens for Group {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(self.clone());
+ }
+}
+
+impl ToTokens for Ident {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(self.clone());
+ }
+}
+
+impl ToTokens for Punct {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(self.clone());
+ }
+}
+
+impl ToTokens for Literal {
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ tokens.append(self.clone());
+ }
+}
+
+impl ToTokens for TokenTree {
+ fn to_tokens(&self, dst: &mut TokenStream) {
+ dst.append(self.clone());
+ }
+}
+
+impl ToTokens for TokenStream {
+ fn to_tokens(&self, dst: &mut TokenStream) {
+ dst.extend(iter::once(self.clone()));
+ }
+
+ fn into_token_stream(self) -> TokenStream {
+ self
+ }
+}
--
2.40.1
next prev parent reply other threads:[~2023-06-09 6:54 UTC|newest]
Thread overview: 134+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-09 6:29 [RFC PATCH 00/80] Rust PuzzleFS filesystem driver Ariel Miculas
2023-06-09 6:29 ` [PATCH 01/80] rust: add definitions for ref-counted inodes and dentries Ariel Miculas
2023-06-09 6:30 ` [PATCH 02/80] rust: add ability to register a file system Ariel Miculas
2023-06-09 9:23 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 03/80] rust: define fs context Ariel Miculas
2023-06-09 6:30 ` [PATCH 04/80] rust: add support for file system parameters Ariel Miculas
2023-06-09 6:30 ` [PATCH 05/80] rust: kernel: add libraries required by the filesystem abstractions Ariel Miculas
2023-06-09 9:46 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 06/80] rust: allow fs driver to initialise new superblocks Ariel Miculas
2023-06-09 6:30 ` [PATCH 07/80] rust: add `module_fs` macro Ariel Miculas
2023-06-09 6:30 ` [PATCH 08/80] WIP: rust: allow fs to be populated Ariel Miculas
2023-06-09 6:30 ` [PATCH 09/80] rust: kernel: backport the delay module from the rust branch Ariel Miculas
2023-06-09 9:29 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 10/80] rust: kernel: add container_of macro Ariel Miculas
2023-06-09 6:30 ` [PATCH 11/80] rust: kernel: add offset_of macro Ariel Miculas
2023-06-09 6:30 ` [PATCH 12/80] drop: Add crate::pr_warn declaration Ariel Miculas
2023-06-09 9:29 ` Miguel Ojeda
2023-06-09 10:46 ` Ariel Miculas (amiculas)
2023-06-09 6:30 ` [PATCH 13/80] rust: kernel: rename from_kernel_errno to from_errno Ariel Miculas
2023-06-09 9:56 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 14/80] rust: kernel: Rename from_pointer to from_foreing and into_pointer to into_foreign Ariel Miculas
2023-06-09 9:57 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 15/80] rust: kernel: add count_paren_items macro, needed by define_fs_params macro Ariel Miculas
2023-06-09 6:30 ` [PATCH 16/80] rust: helpers: add missing rust helper 'alloc_pages' Ariel Miculas
2023-06-09 9:57 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 17/80] kernel: configs: add qemu-busybox-min.config Ariel Miculas
2023-06-09 9:39 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 18/80] rust: kernel: format the rust code Ariel Miculas
2023-06-09 9:21 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 19/80] samples: puzzlefs: add initial puzzlefs sample, copied from rust_fs.rs Ariel Miculas
2023-06-09 6:30 ` [PATCH 20/80] kernel: configs: enable rust samples in rust.config Ariel Miculas
2023-06-09 9:25 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 22/80] rust: proc-macro2: add SPDX License Identifiers Ariel Miculas
2023-06-09 6:30 ` [PATCH 23/80] rust: proc-macro2: remove `unicode_ident` dependency Ariel Miculas
2023-06-09 6:30 ` Ariel Miculas [this message]
2023-06-09 6:30 ` [PATCH 25/80] rust: quote: add SPDX License Identifiers Ariel Miculas
2023-06-09 6:30 ` [PATCH 27/80] rust: syn: " Ariel Miculas
2023-06-09 6:30 ` [PATCH 28/80] rust: syn: remove `unicode-ident` dependency Ariel Miculas
2023-06-09 6:30 ` [PATCH 30/80] rust: serde: add `no_fp_fmt_parse` support Ariel Miculas
2023-06-09 6:30 ` [PATCH 31/80] rust: serde: add SPDX License Identifiers Ariel Miculas
2023-06-10 0:19 ` Kent Overstreet
2023-06-10 6:43 ` Greg KH
2023-06-10 13:18 ` Kent Overstreet
2023-06-10 15:28 ` Greg KH
2023-06-10 0:25 ` Kent Overstreet
2023-06-10 9:04 ` Andreas Hindborg (Samsung)
2023-06-10 13:20 ` Kent Overstreet
2023-06-12 8:56 ` Ariel Miculas
2023-06-10 9:33 ` Miguel Ojeda
2023-06-12 11:58 ` Ariel Miculas
2023-06-15 15:05 ` Ariel Miculas
2023-06-17 16:04 ` Kent Overstreet
2023-06-09 6:30 ` [PATCH 33/80] rust: serde_derive: " Ariel Miculas
2023-06-09 6:30 ` [PATCH 34/80] rust: Kbuild: enable `proc-macro2`, `quote`, `syn`, `serde` and `serde_derive` Ariel Miculas
2023-06-09 6:30 ` [PATCH 35/80] rust: test `serde` support Ariel Miculas
2023-06-09 6:30 ` [PATCH 36/80] Add SAMPLE_RUST_SERDE in rust.config Ariel Miculas
2023-06-09 6:30 ` [PATCH 37/80] rust: kernel: fix compile errors after rebase to rust-next Ariel Miculas
2023-06-09 9:38 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 39/80] rust: serde_cbor: add SPDX License Identifiers Ariel Miculas
2023-06-09 6:30 ` [PATCH 40/80] rust: serde_cbor: add no_fp_fmt_parse support Ariel Miculas
2023-06-09 6:30 ` [PATCH 41/80] rust: Kbuild: enable serde_cbor Ariel Miculas
2023-06-09 10:21 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 42/80] samples: rust: add cbor serialize/deserialize example Ariel Miculas
2023-06-09 6:30 ` [PATCH 43/80] rust: serde_cbor: add support for serde_cbor's from_slice method by using a custom alloc_kernel feature Ariel Miculas
2023-06-09 9:55 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 44/80] rust: serde: add support for deserializing Vec with kernel_alloc feature Ariel Miculas
2023-06-09 10:10 ` Miguel Ojeda
2023-06-09 6:30 ` [PATCH 45/80] rust: file: Replace UnsafeCell with Opaque for File Ariel Miculas
2023-06-09 6:30 ` [PATCH 46/80] rust: kernel: implement fmt::Debug for CString Ariel Miculas
2023-06-09 6:30 ` [PATCH 47/80] samples: puzzlefs: rename RustFs to PuzzleFs Ariel Miculas
2023-06-09 6:30 ` [PATCH 48/80] samples: puzzlefs: add basic deserializing support for the puzzlefs metadata Ariel Miculas
2023-06-09 6:30 ` [PATCH 49/80] rust: file: present the filesystem context to the open function Ariel Miculas
2023-06-09 6:30 ` [PATCH 50/80] rust: kernel: add an abstraction over vfsmount to allow cloning a new private mount Ariel Miculas
2023-06-09 6:30 ` [PATCH 51/80] rust: file: add from_path, from_path_in_root_mnt and read_with_offset methods to File Ariel Miculas
2023-06-09 6:30 ` [PATCH 52/80] samples: puzzlefs: pass the Vfsmount structure from open to read and return the contents of the data file inside /home/puzzlefs_oci Ariel Miculas
2023-06-09 6:30 ` [PATCH 53/80] rust: file: move from_path, from_path_in_root_mnt and read_with_offset methods to a RegularFile newtype Ariel Miculas
2023-06-09 6:30 ` [PATCH 54/80] rust: file: ensure RegularFile can only create regular files Ariel Miculas
2023-06-09 6:30 ` [PATCH 55/80] rust: file: add get_pos method to RegularFile Ariel Miculas
2023-06-09 6:30 ` [PATCH 56/80] rust: file: add methods read_to_end, get_file_size and update_pos " Ariel Miculas
2023-06-09 6:30 ` [PATCH 57/80] rust: file: define a minimal Read trait and implement it for RegularFile Ariel Miculas
2023-06-09 6:30 ` [PATCH 58/80] samples: puzzlefs: add cbor_get_array_size method Ariel Miculas
2023-06-09 6:30 ` [PATCH 59/80] samples: puzzlefs: add KernelError to WireFormatError and implement From conversion Ariel Miculas
2023-06-09 6:30 ` [PATCH 60/80] samples: puzzlefs: implement new for MetadataBlob Ariel Miculas
2023-06-09 6:30 ` [PATCH 61/80] samples: puzzlefs: build puzzlefs into the kernel, thus avoiding the need to export rust symbols Ariel Miculas
2023-06-09 6:31 ` [PATCH 62/80] rust: alloc: add try_clone for Vec<T> Ariel Miculas
2023-06-09 6:31 ` [PATCH 63/80] rust: alloc: add from_iter_fallible " Ariel Miculas
2023-06-09 10:06 ` Miguel Ojeda
2023-06-09 6:31 ` [PATCH 64/80] samples: puzzlefs: implement to_errno and from_errno for WireFormatError Ariel Miculas
2023-06-09 6:31 ` [PATCH 65/80] samples: puzzlefs: add TryReserveError (and from conversion) to WireFormatError Ariel Miculas
2023-06-09 6:31 ` [PATCH 66/80] samples: puzzlefs: add higher level inode related functionality Ariel Miculas
2023-06-09 6:31 ` [PATCH 67/80] samples: puzzlefs: populate the directory entries with the inodes from the puzzlefs metadata file Ariel Miculas
2023-06-09 6:31 ` [PATCH 68/80] rust: hex: import crate Ariel Miculas
2023-06-09 6:31 ` [PATCH 69/80] rust: hex: add SPDX license identifiers Ariel Miculas
2023-06-09 6:31 ` [PATCH 70/80] rust: Kbuild: enable `hex` Ariel Miculas
2023-06-09 6:31 ` [PATCH 71/80] rust: hex: implement FromHex trait and hex::decode using a custom kernel_alloc feature Ariel Miculas
2023-06-09 6:31 ` [PATCH 72/80] rust: hex: add encode_hex_iter and encode_hex_upper_iter methods Ariel Miculas
2023-06-09 6:31 ` [PATCH 73/80] rust: puzzlefs: add HexError to WireFormatError and implement the From conversion Ariel Miculas
2023-06-09 6:31 ` [PATCH 74/80] rust: puzzlefs: display the error value for WireFormatError::KernelError Ariel Miculas
2023-06-09 6:31 ` [PATCH 75/80] samples: puzzlefs: add Rootfs and Digest structs to types.rs Ariel Miculas
2023-06-09 6:31 ` [PATCH 76/80] samples: puzzlefs: implement the conversion from WireFormatError to kernel::error::Error Ariel Miculas
2023-06-09 6:31 ` [PATCH 77/80] rust: puzzlefs: read the puzzlefs image manifest instead of an individual metadata layer Ariel Miculas
2023-06-09 6:31 ` [PATCH 78/80] rust: puzzlefs: rename PuzzleFs to PuzzleFsModule to avoid confusion with the PuzzleFS struct Ariel Miculas
2023-06-09 6:31 ` [PATCH 79/80] rust: puzzlefs: add support for reading files Ariel Miculas
2023-06-09 6:31 ` [PATCH 80/80] rust: puzzlefs: add oci_root_dir and image_manifest filesystem parameters Ariel Miculas
2023-06-09 10:26 ` [RFC PATCH 00/80] Rust PuzzleFS filesystem driver Miguel Ojeda
2023-06-09 10:36 ` Christian Brauner
2023-06-09 11:42 ` Miguel Ojeda
[not found] ` <CH0PR11MB529981313ED5A1F815350E41CD51A@CH0PR11MB5299.namprd11.prod.outlook.com>
2023-06-09 11:45 ` Christian Brauner
2023-06-09 12:03 ` Ariel Miculas (amiculas)
2023-06-09 12:56 ` Gao Xiang
2023-06-09 12:07 ` Miguel Ojeda
2023-06-09 12:11 ` Ariel Miculas (amiculas)
2023-06-09 12:21 ` Greg KH
2023-06-09 13:05 ` Alice Ryhl
2023-06-09 12:20 ` Colin Walters
2023-06-09 12:42 ` Christian Brauner
2023-06-09 17:28 ` Serge Hallyn
2023-06-09 13:45 ` Ariel Miculas (amiculas)
2023-06-09 17:10 ` Trilok Soni
2023-06-09 17:16 ` Ariel Miculas (amiculas)
2023-06-09 17:41 ` Miguel Ojeda
2023-06-09 18:49 ` James Bottomley
2023-06-09 19:08 ` Miguel Ojeda
2023-06-09 19:11 ` Ariel Miculas
2023-06-09 20:01 ` James Bottomley
2023-06-10 9:34 ` Miguel Ojeda
2023-06-09 18:43 ` James Bottomley
2023-06-09 18:59 ` Ariel Miculas (amiculas)
2023-06-09 19:20 ` Ariel Miculas
2023-06-09 19:45 ` Trilok Soni
2023-06-09 19:53 ` Alice Ryhl
2023-06-09 23:52 ` Kent Overstreet
2023-06-10 9:40 ` Miguel Ojeda
2023-06-10 0:09 ` Kent Overstreet
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