Use JS regex syntax

Note that js_regex.compile has a cache, just like re.compile, so calling it in loops does a lot of dict lookups but very little work.

1 files changed, 3 insertions, 3 deletions

diff --git a/jsonschema/_validators.py b/jsonschema/_validators.py
index 179fec0..39ff905 100644
--- a/jsonschema/_validators.py
+++ b/jsonschema/_validators.py
@@ -1,4 +1,4 @@
-import re
+import js_regex
 
 from jsonschema._utils import (
     ensure_list,
@@ -19,7 +19,7 @@ def patternProperties(validator, patternProperties, instance, schema):
 
     for pattern, subschema in iteritems(patternProperties):
         for k, v in iteritems(instance):
-            if re.search(pattern, k):
+            if js_regex.compile(pattern).search(k):
                 for error in validator.descend(
                     v, subschema, path=k, schema_path=pattern,
                 ):
@@ -197,7 +197,7 @@ def uniqueItems(validator, uI, instance, schema):
 def pattern(validator, patrn, instance, schema):
     if (
         validator.is_type(instance, "string") and
-        not re.search(patrn, instance)
+        not js_regex.compile(patrn).search(instance)
     ):
         yield ValidationError("%r does not match %r" % (instance, patrn))