Modified lex to allow rules to be attached to token strings

2016-09-12 14:24:03 -05:00 · 2016-09-12 14:24:03 -05:00 · dc08a1b466
commit dc08a1b466
parent 41ee4aff04
1 changed files with 5 additions and 1 deletions
--- a/sly/lex.py
+++ b/sly/lex.py
@ -74,7 +74,11 @@ class LexerMetaDict(OrderedDict):
    '''
    def __setitem__(self, key, value):
        if key in self and not isinstance(value, property):
-            raise AttributeError('Name %s redefined' % (key))
+            if isinstance(self[key], str) and callable(value):
+                value.pattern = self[key]
+            else:
+                raise AttributeError('Name %s redefined' % (key))
+            
        super().__setitem__(key, value)

 class LexerMeta(type):