From cfc2f67f72a2f3fc8e0a3c880952d9f75a9cfb3b Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Wed, 5 Jan 2022 20:47:47 -0800
Subject: [PATCH] Expose original token reprsentation of syn::Lit

---
 src/lit.rs | 36 +++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

diff --git a/src/lit.rs b/src/lit.rs
index 31d0c7ec63..bb61ee26a8 100644
--- a/src/lit.rs
+++ b/src/lit.rs
@@ -3,9 +3,7 @@ use crate::lookahead;
 #[cfg(feature = "parsing")]
 use crate::parse::{Parse, Parser};
 use crate::{Error, Result};
-#[cfg(feature = "printing")]
-use proc_macro2::Ident;
-use proc_macro2::{Literal, Span};
+use proc_macro2::{Ident, Literal, Span};
 #[cfg(feature = "parsing")]
 use proc_macro2::{TokenStream, TokenTree};
 use std::fmt::{self, Display};
@@ -243,6 +241,10 @@ impl LitStr {
     pub fn suffix(&self) -> &str {
         &self.repr.suffix
     }
+
+    pub fn token(&self) -> Literal {
+        self.repr.token.clone()
+    }
 }
 
 impl LitByteStr {
@@ -274,6 +276,10 @@ impl LitByteStr {
     pub fn suffix(&self) -> &str {
         &self.repr.suffix
     }
+
+    pub fn token(&self) -> Literal {
+        self.repr.token.clone()
+    }
 }
 
 impl LitByte {
@@ -305,6 +311,10 @@ impl LitByte {
     pub fn suffix(&self) -> &str {
         &self.repr.suffix
     }
+
+    pub fn token(&self) -> Literal {
+        self.repr.token.clone()
+    }
 }
 
 impl LitChar {
@@ -336,6 +346,10 @@ impl LitChar {
     pub fn suffix(&self) -> &str {
         &self.repr.suffix
     }
+
+    pub fn token(&self) -> Literal {
+        self.repr.token.clone()
+    }
 }
 
 impl LitInt {
@@ -407,6 +421,10 @@ impl LitInt {
     pub fn set_span(&mut self, span: Span) {
         self.repr.token.set_span(span);
     }
+
+    pub fn token(&self) -> Literal {
+        self.repr.token.clone()
+    }
 }
 
 impl From<Literal> for LitInt {
@@ -479,6 +497,10 @@ impl LitFloat {
     pub fn set_span(&mut self, span: Span) {
         self.repr.token.set_span(span);
     }
+
+    pub fn token(&self) -> Literal {
+        self.repr.token.clone()
+    }
 }
 
 impl From<Literal> for LitFloat {
@@ -520,6 +542,11 @@ impl LitBool {
     pub fn set_span(&mut self, span: Span) {
         self.span = span;
     }
+
+    pub fn token(&self) -> Ident {
+        let s = if self.value { "true" } else { "false" };
+        Ident::new(s, self.span)
+    }
 }
 
 #[cfg(feature = "extra-traits")]
@@ -915,8 +942,7 @@ mod printing {
     #[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
     impl ToTokens for LitBool {
         fn to_tokens(&self, tokens: &mut TokenStream) {
-            let s = if self.value { "true" } else { "false" };
-            tokens.append(Ident::new(s, self.span));
+            tokens.append(self.token());
         }
     }
 }