def testParseBinaryOperatorParenthesesPrecedence1(self):
string = "(3 + 4) * 5"
parser = self.makeStringParser(string)
result = parser.parse_expression()
self.assertIsNode('BinaryOperation', result)
self.assertIsNode('BinaryOperation', result.left)
self.assertIsNode('NumberLiteral', result.right)
def testParseCommaExpression(self):
testCases = [
'a, b, c',
]
for string in testCases:
parser = self.makeStringParser(string)
result = parser.parse_expression()
self.assertIsNode('BinaryOperation', result)
def testParseBinaryOperatorComparison(self):
string = "3 + 4 && 5 + 6"
parser = self.makeStringParser(string)
result = parser.parse_expression()
self.assertIsNode('BinaryOperation', result)
self.assertEquals('&&', result.op)
self.assertIsNode('BinaryOperation', result.left)
self.assertIsNode('BinaryOperation', result.right)
def testParseBinaryOperatorEqualPrecedence(self):
string = "a + b - c"
parser = self.makeStringParser(string)
result = parser.parse_expression()
self.assertIsNode('BinaryOperation', result)
self.assertEqual(u'-', result.op)
self.assertIsNode('BinaryOperation', result.left)
self.assertEqual(u'+', result.left.op)
def testParseBinaryOperatorParenthesesPrecedence2(self):
string = "a + (b - c)"
parser = self.makeStringParser(string)
result = parser.parse_expression()
self.assertIsNode('BinaryOperation', result)
self.assertEqual(u'+', result.op)
self.assertIsNode('BinaryOperation', result.right)
self.assertEqual(u'-', result.right.op)
def testParseExpression(self):
testCases = {
'call-functionexpression': ('(function() { return {};})();', 'CallExpression'),
}
for test_name, (string, expected) in testCases.iteritems():
parser = self.makeStringParser(string)
result = parser.parse_expression()
fmt_args = (test_name, expected, result.__class__.__name__)
msg = '%s did not parse an %s; got %s' % fmt_args
self.assertIsNode(expected, result, msg=msg)
def testParseBinaryOperatorMultiplePrecedence(self):
string = "3 + 4 * 5 + 6"
parser = self.makeStringParser(string)
result = parser.parse_expression()
self.assertIsNode('BinaryOperation', result)
self.assertIsNode('BinaryOperation', result.left)
self.assertIsNode('NumberLiteral', result.right)
self.assertEquals('+', result.left.op)
self.assertIsNode('BinaryOperation', result.left.right)
self.assertEquals('*', result.left.right.op)
