| // This code exercises the surface area that we expect of Span's unstable API. |
| // If the current toolchain is able to compile it, then proc-macro2 is able to |
| // offer these APIs too. |
| |
| #![feature(proc_macro_span)] |
| |
| extern crate proc_macro; |
| |
| use core::ops::{Range, RangeBounds}; |
| use proc_macro::{Literal, Span}; |
| |
| pub fn byte_range(this: &Span) -> Range<usize> { |
| this.byte_range() |
| } |
| |
| pub fn join(this: &Span, other: Span) -> Option<Span> { |
| this.join(other) |
| } |
| |
| pub fn subspan<R: RangeBounds<usize>>(this: &Literal, range: R) -> Option<Span> { |
| this.subspan(range) |
| } |
| |
| // Include in sccache cache key. |
| const _: Option<&str> = option_env!("RUSTC_BOOTSTRAP"); |
