class ParserTests(unittest.TestCase):
def setUp(self):
self.parser = Parser()
def parse(self, s):
return self.parser.parse(SingleLineFeeder(s))
def check(self, expr1, expr2):
if isinstance(expr1, str):
expr1 = self.parse(expr1)
if isinstance(expr2, str):
expr2 = self.parse(expr2)
if expr1 is None:
self.assertIsNone(expr2)
else:
self.assertEqual(repr(expr1), repr(expr2))
self.assertEqual(expr1, expr2)
def scan_error(self, string):
self.assertRaises(ScanError, self.parse, string)
def incomplete_error(self, string):
self.assertRaises(IncompleteSyntaxError, self.parse, string)
def invalid_error(self, string):
self.assertRaises(InvalidSyntaxError, self.parse, string)
class ParserTests(unittest.TestCase):
def setUp(self):
self.parser = Parser()
def parse(self, s):
return self.parser.parse(SingleLineFeeder(s))
def check(self, expr1, expr2):
if isinstance(expr1, six.string_types):
expr1 = self.parse(expr1)
if isinstance(expr2, six.string_types):
expr2 = self.parse(expr2)
if expr1 is None:
self.assertIsNone(expr2)
else:
self.assertEqual(repr(expr1), repr(expr2))
self.assertEqual(expr1, expr2)
def scan_error(self, string):
self.assertRaises(ScanError, self.parse, string)
def incomplete_error(self, string):
self.assertRaises(IncompleteSyntaxError, self.parse, string)
def invalid_error(self, string):
self.assertRaises(InvalidSyntaxError, self.parse, string)
def setUp(self):
self.parser = Parser()
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from mathics.core.parser.parser import Parser
from mathics.core.parser.convert import convert
from mathics.core.parser.feed import SingleLineFeeder
from mathics.core.expression import ensure_context
parser = Parser()
def parse(definitions, feeder):
'''
Parse input (from the frontend, -e, input files, ToExpression etc).
Look up symbols according to the Definitions instance supplied.
Feeder must implement the feed and empty methods, see core/parser/feed.py.
'''
ast = parser.parse(feeder)
if ast is not None:
return convert(ast, definitions)
else:
return None
class SystemDefinitions(object):
"""
Dummy Definitions object that puts every unqualified symbol in
System`.
"""
def lookup_name(self, name):
def setUp(self):
self.parser = Parser()