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Switch to compiled regular expressions

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This introduces several advantages:

No longer rely on the cache to be able to contain as many as
needed. It works within relational but it is not assured to be so if it
is used within other projects.

Using compile flags allows slightly simpler expressions.
This commit is contained in:
Salvo 'LtWorf' Tomaselli 2015-09-09 15:17:17 +02:00
parent d8db1858ae
commit 9330090362
1 changed files with 9 additions and 6 deletions
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15
relational/rtypes.py
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@ -23,13 +23,17 @@
import datetime
import re
RELATION_NAME_REGEXP = r'^[_a-zA-Z]+[_a-zA-Z0-9]*$'
RELATION_NAME_REGEXP = re.compile(r'^[_a-z][_a-z0-9]*$', re.IGNORECASE)
class Rstring (str):
'''String subclass with some custom methods'''
int_regexp = re.compile(r'^[\+\-]{0,1}[0-9]+$')
float_regexp = re.compile(r'^[\+\-]{0,1}[0-9]+(\.([0-9])+)?$')
date_regexp = re.compile(r'^([0-9]{1,4})(\\|-|/)([0-9]{1,2})(\\|-|/)([0-9]{1,2})$')
def autocast(self):
'''
Returns the automatic cast for this
@ -56,7 +60,7 @@ class Rstring (str):
the following regexp:
r'^[\+\-]{0,1}[0-9]+$'
'''
if re.match(r'^[\+\-]{0,1}[0-9]+$', self) == None:
if Rstring.int_regexp.match(self) is None:
return False
else:
return True
@ -67,7 +71,7 @@ class Rstring (str):
the following regexp:
r'^[\+\-]{0,1}[0-9]+(\.([0-9])+)?$'
'''
if re.match(r'^[\+\-]{0,1}[0-9]+(\.([0-9])+)?$', self) == None:
if Rstring.float_regexp.match(self) is None:
return False
else:
return True
@ -83,9 +87,8 @@ class Rstring (str):
except:
pass
r = re.match(
r'^([0-9]{1,4})(\\|-|/)([0-9]{1,2})(\\|-|/)([0-9]{1,2})$', self)
if r == None:
r = Rstring.date_regexp.match(self)
if r is None:
self._isdate = False
self._date = None
return False