From: Kevin Brown <kevin@kevin-brown.com>
Date: Fri, 15 May 2020 19:52:16 +0000 (-0400)
Subject: Add support for negative numbers
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d8ad01caeee807c873f209581ef609fce879ce2b;p=thirdparty%2Fjinja.git

Add support for negative numbers

This also fixes a bug where the exponent was not being properly
captured as well, just the sign of the number
---

diff --git a/grammar.ebnf b/grammar.ebnf
index 0f8a6ada..6d266108 100644
--- a/grammar.ebnf
+++ b/grammar.ebnf
@@ -535,12 +535,17 @@ INTEGER_LITERAL
     /[\d_]*\d+/
     ;
 
+SIGNED_INTEGER_LITERAL
+    =
+    /[+-]?[\d_]*\d+/
+    ;
+
 NUMBER_LITERAL
     =
     literal_type:`number`
-    whole:INTEGER_LITERAL
-    ["." fractional:INTEGER_LITERAL]
-    [ ( "e" | "E" ) exponent:[ ( "+" | "-" ) ] INTEGER_LITERAL ]
+    whole:SIGNED_INTEGER_LITERAL
+    [ "." fractional:INTEGER_LITERAL ]
+    [ ( "e" | "E" ) exponent:SIGNED_INTEGER_LITERAL ]
     ;
 
 STRING_LITERAL