Index: pkg/compiler/lib/src/util/characters.dart |
diff --git a/pkg/compiler/lib/src/util/characters.dart b/pkg/compiler/lib/src/util/characters.dart |
index 5961d0764a0d78de9abba943782c89a4e971725a..0168e0b37bec082d11651e1923b636dfdefafd68 100644 |
--- a/pkg/compiler/lib/src/util/characters.dart |
+++ b/pkg/compiler/lib/src/util/characters.dart |
@@ -141,3 +141,7 @@ bool isUtf16LeadSurrogate(int value) { |
bool isUtf16TrailSurrogate(int value) { |
return value >= 0xdc00 && value <= 0xdfff; |
} |
+ |
+bool isDigit(int characterCode) { |
+ return $0 <= characterCode && characterCode <= $9; |
+} |