Import from alloc to make remaining std dependencies clear

4 files changed, 7 insertions, 5 deletions

diff --git a/src/ident_fragment.rs b/src/ident_fragment.rs
index 4ce82a5..6c2a9a8 100644
--- a/src/ident_fragment.rs
+++ b/src/ident_fragment.rs
@@ -1,6 +1,6 @@
+use alloc::borrow::Cow;
 use core::fmt;
 use proc_macro2::{Ident, Span};
-use std::borrow::Cow;
 
 /// Specialized formatting trait used by `format_ident!`.
 ///
diff --git a/src/lib.rs b/src/lib.rs
index 03dd3fe..80bd6fe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -102,6 +102,8 @@
     clippy::wrong_self_convention,
 )]
 
+extern crate alloc;
+
 #[cfg(feature = "proc-macro")]
 extern crate proc_macro;
 
diff --git a/src/runtime.rs b/src/runtime.rs
index fff9951..ce893eb 100644
--- a/src/runtime.rs
+++ b/src/runtime.rs
@@ -5,9 +5,9 @@ use core::iter;
 use core::ops::BitOr;
 use proc_macro2::{Group, Ident, Punct, Spacing, TokenTree};
 
+pub use alloc::format;
 pub use core::option::Option;
 pub use proc_macro2::{Delimiter, Span, TokenStream};
-pub use std::format;
 
 pub struct HasIterator; // True
 pub struct ThereIsNoIteratorInRepetition; // False
@@ -50,8 +50,8 @@ pub mod ext {
     use super::RepInterp;
     use super::{HasIterator as HasIter, ThereIsNoIteratorInRepetition as DoesNotHaveIter};
     use crate::ToTokens;
+    use alloc::collections::btree_set::{self, BTreeSet};
     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 {
diff --git a/src/to_tokens.rs b/src/to_tokens.rs
index 5748721..23b6ec2 100644
--- a/src/to_tokens.rs
+++ b/src/to_tokens.rs
@@ -1,8 +1,8 @@
 use super::TokenStreamExt;
+use alloc::borrow::Cow;
+use alloc::rc::Rc;
 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.
 ///