openharmony/third_party_rust_proc-macro2
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Remove description of old version support

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We only support rustc versions that have the full proc-macro API these
days.
This commit is contained in:
David Tolnay 2019-08-11 21:30:18 -07:00
parent 406e22d320
commit 07c6d289e2
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2 changed files with 2 additions and 17 deletions
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9
README.md
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@ -5,7 +5,7 @@
[![Rust Documentation](https://img.shields.io/badge/api-rustdoc-blue.svg)](https://docs.rs/proc-macro2)
A wrapper around the procedural macro API of the compiler's `proc_macro` crate.
This library serves three purposes:
This library serves two purposes:
- **Bring proc-macro-like functionality to other contexts like build.rs and
main.rs.** Types from `proc_macro` are entirely specific to procedural macros
@ -21,13 +21,6 @@ This library serves three purposes:
unit test. In order for helper libraries or components of a macro to be
testable in isolation, they must be implemented using `proc_macro2`.
- **Provide the latest and greatest APIs across all compiler versions.**
Procedural macros were first introduced to Rust in 1.15.0 with an extremely
minimal interface. Since then, many improvements have landed to make macros
more flexible and easier to write. This library tracks the procedural macro
API of the most recent stable compiler but employs a polyfill to provide that
API consistently across any compiler since 1.15.0.
[syn]: https://github.com/dtolnay/syn
[quote]: https://github.com/dtolnay/quote

10
src/lib.rs
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@ -1,5 +1,5 @@
//! A wrapper around the procedural macro API of the compiler's [`proc_macro`]
//! crate. This library serves three purposes:
//! crate. This library serves two purposes:
//!
//! [`proc_macro`]: https://doc.rust-lang.org/proc_macro/
//!
@ -18,14 +18,6 @@
//! a macro to be testable in isolation, they must be implemented using
//! `proc_macro2`.
//!
//! - **Provide the latest and greatest APIs across all compiler versions.**
//! Procedural macros were first introduced to Rust in 1.15.0 with an
//! extremely minimal interface. Since then, many improvements have landed to
//! make macros more flexible and easier to write. This library tracks the
//! procedural macro API of the most recent stable compiler but employs a
//! polyfill to provide that API consistently across any compiler since
//! 1.15.0.
//!
//! [syn]: https://github.com/dtolnay/syn
//! [quote]: https://github.com/dtolnay/quote
//!