Backed out changeset 9bd59fccddea

issue9801002_40001.diff

@@ -0,0 +1,85 @@
+Index: trytond/trytond/tests/test_tools.py
+===================================================================
+
+--- a/trytond/trytond/tests/test_tools.py
++++ b/trytond/tests/test_tools.py
+@@ -3,12 +3,13 @@
+ #this repository contains the full copyright notices and license terms.
+
+ import unittest
++import doctest
+ import datetime
+ import sql
+ import sql.operators
+
+ from trytond.tools import reduce_ids, safe_eval, datetime_strftime, \
+-    reduce_domain
++    reduce_domain, decimal_
+
+
+ class ToolsTestCase(unittest.TestCase):
+@@ -117,4 +118,5 @@
+     suite = unittest.TestSuite()
+     for testcase in (ToolsTestCase,):
+         suite.addTests(func(testcase))
++    suite.addTest(doctest.DocTestSuite(decimal_))
+     return suite
+
+Index: trytond/trytond/tools/__init__.py
+===================================================================
+
+--- a/trytond/trytond/tools/__init__.py
++++ b/trytond/trytond/tools/__init__.py
+@@ -2,6 +2,7 @@
+ #this repository contains the full copyright notices and license terms.
+ from .misc import *
+ from .datetime_strftime import *
++from .decimal_ import *
+
+
+ class ClassProperty(property):
+
+Index: trytond/trytond/tools/decimal_.py
+===================================================================
+new file mode 100644
+
+--- /dev/null
++++ b/trytond/trytond/tools/decimal_.py
+@@ -0,0 +1,36 @@
++# This file is part of Tryton.  The COPYRIGHT file at the top level of
++# this repository contains the full copyright notices and license terms.
++import tokenize
++from io import StringIO
++
++# code snippet taken from http://docs.python.org/library/tokenize.html
++
++
++def decistmt(s):
++    """Substitute Decimals for floats in a string of statements.
++
++    >>> from decimal import Decimal
++    >>> s = 'print +21.3e-5*-.1234/81.7'
++    >>> decistmt(s)
++    u"print +Decimal (u'21.3e-5')*-Decimal (u'.1234')/Decimal (u'81.7')"
++
++    >>> exec(s)
++    -3.21716034272e-07
++    >>> exec(decistmt(s))
++    -3.217160342717258261933904529E-7
++    """
++    result = []
++    # tokenize the string
++    g = tokenize.generate_tokens(StringIO(s.decode('utf-8')).readline)
++    for toknum, tokval, _, _, _ in g:
++        # replace NUMBER tokens
++        if toknum == tokenize.NUMBER and '.' in tokval:
++            result.extend([
++                (tokenize.NAME, 'Decimal'),
++                (tokenize.OP, '('),
++                (tokenize.STRING, repr(tokval)),
++                (tokenize.OP, ')')
++            ])
++        else:
++            result.append((toknum, tokval))
++    return tokenize.untokenize(result)
+