65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
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from Cython.TestUtils import CythonTest
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from Cython.Compiler.TreeFragment import *
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from Cython.Compiler.Nodes import *
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from Cython.Compiler.UtilNodes import *
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import Cython.Compiler.Naming as Naming
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class TestTreeFragments(CythonTest):
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def test_basic(self):
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F = self.fragment(u"x = 4")
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T = F.copy()
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self.assertCode(u"x = 4", T)
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def test_copy_is_taken(self):
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F = self.fragment(u"if True: x = 4")
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T1 = F.root
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T2 = F.copy()
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self.assertEqual("x", T2.stats[0].if_clauses[0].body.lhs.name)
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T2.stats[0].if_clauses[0].body.lhs.name = "other"
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self.assertEqual("x", T1.stats[0].if_clauses[0].body.lhs.name)
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def test_substitutions_are_copied(self):
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T = self.fragment(u"y + y").substitute({"y": NameNode(pos=None, name="x")})
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self.assertEqual("x", T.stats[0].expr.operand1.name)
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self.assertEqual("x", T.stats[0].expr.operand2.name)
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self.assertTrue(T.stats[0].expr.operand1 is not T.stats[0].expr.operand2)
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def test_substitution(self):
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F = self.fragment(u"x = 4")
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y = NameNode(pos=None, name=u"y")
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T = F.substitute({"x" : y})
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self.assertCode(u"y = 4", T)
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def test_exprstat(self):
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F = self.fragment(u"PASS")
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pass_stat = PassStatNode(pos=None)
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T = F.substitute({"PASS" : pass_stat})
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self.assertTrue(isinstance(T.stats[0], PassStatNode), T)
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def test_pos_is_transferred(self):
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F = self.fragment(u"""
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x = y
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x = u * v ** w
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""")
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T = F.substitute({"v" : NameNode(pos=None, name="a")})
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v = F.root.stats[1].rhs.operand2.operand1
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a = T.stats[1].rhs.operand2.operand1
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self.assertEqual(v.pos, a.pos)
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def test_temps(self):
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TemplateTransform.temp_name_counter = 0
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F = self.fragment(u"""
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TMP
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x = TMP
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""")
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T = F.substitute(temps=[u"TMP"])
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s = T.body.stats
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self.assertTrue(isinstance(s[0].expr, TempRefNode))
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self.assertTrue(isinstance(s[1].rhs, TempRefNode))
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self.assertTrue(s[0].expr.handle is s[1].rhs.handle)
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if __name__ == "__main__":
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import unittest
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unittest.main()
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