From e547de64c80b98d661999c0788c09210d9d4a37e Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Sat, 2 Feb 2019 12:47:28 +0100
Subject: Stage 1-1: Implement Function.prototype.toString revision proposal.

Tag #960
---
 js/src/frontend/TokenStream.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'js/src/frontend/TokenStream.h')

diff --git a/js/src/frontend/TokenStream.h b/js/src/frontend/TokenStream.h
index 5d6b4b795..77eea3d81 100644
--- a/js/src/frontend/TokenStream.h
+++ b/js/src/frontend/TokenStream.h
@@ -570,6 +570,13 @@ class MOZ_STACK_CLASS TokenStream
         return true;
     }
 
+    MOZ_MUST_USE bool peekOffset(uint32_t* offset, Modifier modifier = None) {
+        TokenPos pos;
+        if (!peekTokenPos(&pos, modifier))
+            return false;
+        *offset = pos.begin;
+        return true;
+    }
     // This is like peekToken(), with one exception:  if there is an EOL
     // between the end of the current token and the start of the next token, it
     // return true and store TOK_EOL in |*ttp|.  In that case, no token with
-- 
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