| 1 | #!/usr/bin/env python
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| 2 | from __future__ import print_function
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| 3 | """
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| 4 | arith_ast_test.py: Tests for arith_ast.py
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| 5 | """
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| 6 |
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| 7 | import cStringIO
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| 8 | import unittest
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| 9 |
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| 10 | from asdl import py_meta
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| 11 | from asdl import asdl_
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| 12 | from asdl import const
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| 13 | from asdl import encode
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| 14 |
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| 15 | from asdl import arith_ast # module under test
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| 16 |
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| 17 | # Sanity check. Doesn't pass because this unit test exposes implementation
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| 18 | # details, like the concrete classes.
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| 19 | #from _tmp import arith_ast_asdl as arith_ast
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| 20 |
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| 21 |
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| 22 | ArithVar = arith_ast.ArithVar
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| 23 | ArithUnary = arith_ast.ArithUnary
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| 24 | ArithBinary = arith_ast.ArithBinary
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| 25 | Const = arith_ast.Const
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| 26 | Slice = arith_ast.Slice
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| 27 | arith_expr = arith_ast.arith_expr
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| 28 | source_location = arith_ast.source_location
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| 29 | op_id_e = arith_ast.op_id_e
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| 30 |
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| 31 | cflow_e = arith_ast.cflow_e
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| 32 | #cflow_t = arith_ast.cflow_t
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| 33 |
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| 34 |
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| 35 | class ArithAstTest(unittest.TestCase):
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| 36 |
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| 37 | def testFieldDefaults(self):
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| 38 | s = arith_ast.Slice()
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| 39 | s.a = ArithVar('foo')
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| 40 | self.assertEqual(None, s.begin)
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| 41 | self.assertEqual(None, s.end)
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| 42 | self.assertEqual(None, s.stride)
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| 43 | print(s)
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| 44 |
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| 45 | func = arith_ast.FuncCall()
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| 46 | func.name = 'f'
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| 47 | self.assertEqual([], func.args)
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| 48 | print(func)
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| 49 |
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| 50 | t = arith_ast.token(5, 'x')
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| 51 | self.assertEqual(5, t.id)
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| 52 | self.assertEqual('x', t.value)
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| 53 | self.assertEqual(const.NO_INTEGER, t.span_id)
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| 54 |
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| 55 | def testTypeCheck(self):
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| 56 | v = ArithVar('name')
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| 57 | # Integer is not allowed
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| 58 | self.assertRaises(AssertionError, ArithVar, 1)
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| 59 |
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| 60 | v = ArithUnary(op_id_e.Minus, Const(99))
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| 61 | # Raw integer is not allowed
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| 62 | self.assertRaises(AssertionError, ArithUnary, op_id_e.Minus, 99)
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| 63 |
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| 64 | v = ArithUnary(op_id_e.Minus, Const(99))
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| 65 | # Raw integer is not allowed
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| 66 | #self.assertRaises(AssertionError, ArithUnary, op_id_e.Minus, op_id_e.Plus)
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| 67 |
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| 68 | def testExtraFields(self):
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| 69 | v = ArithVar('z')
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| 70 |
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| 71 | # TODO: Attach this to EVERY non-simple constructor? Those are subclasses
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| 72 | # of Sum types.
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| 73 | # What about product types?
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| 74 | #print(v.xspans)
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| 75 |
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| 76 | def testEncode(self):
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| 77 | obj = arith_ast.Const(99)
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| 78 | print('Encoding into binary:')
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| 79 | print(obj)
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| 80 |
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| 81 | enc = encode.Params()
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| 82 | f = cStringIO.StringIO()
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| 83 | out = encode.BinOutput(f)
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| 84 | encode.EncodeRoot(obj, enc, out)
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| 85 | e = f.getvalue()
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| 86 |
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| 87 | #print(repr(e))
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| 88 | #print(e[0:4], e[4:8], e[8:])
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| 89 |
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| 90 | # Header is OHP version 1
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| 91 | self.assertEqual(b'OHP\x01', e[0:4])
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| 92 |
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| 93 | self.assertEqual(b'\x04', e[4:5]) # alignment 4
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| 94 |
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| 95 | # TODO: Fix after spids
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| 96 | return
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| 97 | self.assertEqual(b'\x02\x00\x00', e[5:8]) # root ref 2
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| 98 |
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| 99 | self.assertEqual(b'\x01', e[8:9]) # tag 1 is const
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| 100 | self.assertEqual(b'\x63\x00\x00', e[9:12]) # 0x63 = 99
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| 101 |
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| 102 | def testConstructorType(self):
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| 103 | n1 = ArithVar('x')
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| 104 | n2 = ArithVar(name='y')
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| 105 | print(n1)
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| 106 | print(n2)
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| 107 |
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| 108 | # Not good because not assigned?
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| 109 | n3 = ArithVar()
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| 110 |
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| 111 | # NOTE: You cannot instantiate a product type directly? It's just used for
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| 112 | # type checking. What about OCaml?
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| 113 | # That means you just need to create classes for the records (Constructor).
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| 114 | # They all descend from Obj. They don't need
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| 115 |
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| 116 | n3 = ArithVar()
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| 117 | try:
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| 118 | n4 = ArithVar('x', name='X')
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| 119 | except TypeError as e:
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| 120 | pass
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| 121 | else:
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| 122 | raise AssertionError("Should have failed")
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| 123 |
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| 124 | def testProductType(self):
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| 125 | print()
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| 126 | print('-- PRODUCT --')
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| 127 | print()
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| 128 |
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| 129 | s = source_location()
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| 130 | s.path = 'hi'
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| 131 | s.line = 1
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| 132 | s.col = 2
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| 133 | s.length = 3
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| 134 | print(s)
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| 135 |
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| 136 | assert isinstance(s.ASDL_TYPE, asdl_.Product)
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| 137 |
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| 138 | # Implementation detail for dynamic type checking
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| 139 | assert isinstance(s, py_meta.CompoundObj)
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| 140 |
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| 141 | def testSimpleSumType(self):
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| 142 | # TODO: Should be op_id_i.Plus -- instance
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| 143 | # Should be op_id_s.Plus
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| 144 |
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| 145 | print()
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| 146 | print('-- SIMPLE SUM --')
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| 147 | print()
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| 148 |
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| 149 | o = op_id_e.Plus
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| 150 | assert isinstance(o, py_meta.SimpleObj)
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| 151 |
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| 152 | # Implementation detail for dynamic type checking
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| 153 | assert isinstance(o.ASDL_TYPE, asdl_.Sum)
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| 154 |
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| 155 | def testCompoundSumType(self):
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| 156 | print()
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| 157 | print('-- COMPOUND SUM --')
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| 158 | print()
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| 159 |
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| 160 | # TODO: Should be cflow_t.Break() and cflow_i.Break
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| 161 | c = arith_ast.Break()
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| 162 | assert isinstance(c, arith_ast.Break)
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| 163 | assert isinstance(c, arith_ast.cflow)
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| 164 | assert isinstance(c, py_meta.CompoundObj)
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| 165 |
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| 166 | # Implementation detail for dynamic type checking
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| 167 | assert isinstance(c.ASDL_TYPE, asdl_.Constructor), c.ASDL_TYPE
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| 168 |
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| 169 | def testOtherTypes(self):
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| 170 | c = Const(66)
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| 171 | print(c)
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| 172 |
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| 173 | print((Slice(Const(1), Const(5), Const(2))))
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| 174 |
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| 175 | print((op_id_e.Plus))
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| 176 |
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| 177 | # Class for sum type
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| 178 | print(arith_expr)
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| 179 |
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| 180 | # Invalid because only half were assigned
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| 181 | #print(ArithBinary(op_id_e.Plus, Const(5)))
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| 182 |
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| 183 | n = ArithBinary()
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| 184 | #n.CheckUnassigned()
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| 185 | n.op_id = op_id_e.Plus
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| 186 | n.left = Const(5)
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| 187 | #n.CheckUnassigned()
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| 188 | n.right = Const(6)
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| 189 | n.CheckUnassigned()
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| 190 |
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| 191 | arith_expr_e = arith_ast.arith_expr_e
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| 192 | self.assertEqual(arith_expr_e.Const, c.tag)
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| 193 | self.assertEqual(arith_expr_e.ArithBinary, n.tag)
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| 194 |
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| 195 |
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| 196 | if __name__ == '__main__':
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| 197 | unittest.main()
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