feat: switch to use third party regex library for extended support

Author: jayakishore709

.gitignore

@@ -27,3 +27,4 @@ venv/
 
 # Editors
 .vscode
+.idea

fastjsonschema/draft04.py

@@ -1,5 +1,5 @@
 import decimal
-import re
+import regex as re
 
 from .exceptions import JsonSchemaDefinitionException
 from .generator import CodeGenerator, enforce_list
@@ -271,7 +271,7 @@ def generate_format(self):
                 self._generate_format(format_, format_ + '_re_pattern', format_regex)
             # Format regex is used only in meta schemas.
             elif format_ == 'regex':
-                self._extra_imports_lines = ['import re'] 
+                self._extra_imports_lines = ['import regex as re'] 
                 with self.l('try:', optimize=False):
                     self.l('re.compile({variable})')
                 with self.l('except Exception:'):

fastjsonschema/exceptions.py

@@ -1,4 +1,4 @@
-import re
+import regex as re
 
 
 SPLIT_RE = re.compile(r'[\.\[\]]+')

fastjsonschema/generator.py

@@ -1,6 +1,6 @@
 from collections import OrderedDict
 from decimal import Decimal
-import re
+import regex as re
 
 from .exceptions import JsonSchemaValueException, JsonSchemaDefinitionException
 from .indent import indent
@@ -108,7 +108,7 @@ def global_state_code(self):
                 '',
             ])
         return '\n'.join(self._extra_imports_lines + [
-            'import re',
+            'import regex as re',
             'from fastjsonschema import JsonSchemaValueException',
             '',
             '',

fastjsonschema/ref_resolver.py

@@ -8,7 +8,7 @@
 
 import contextlib
 import json
-import re
+import regex as re
 from urllib import parse as urlparse
 from urllib.parse import unquote
 

setup.py

@@ -17,6 +17,9 @@
     name='fastjsonschema',
     version=VERSION,
     packages=['fastjsonschema'],
+    install_requires=[
+        'regex'
+    ],
     extras_require={
         'devel': [
             'colorama',

tests/test_format.py

@@ -1,5 +1,5 @@
 import datetime
-import re
+import regex as re
 
 import pytest
 

tests/test_pattern_serialization.py

@@ -1,4 +1,4 @@
-import re
+import regex as re
 
 from fastjsonschema.generator import serialize_regexes