1 import unittest 2 from Cython.Compiler.Visitor import PrintTree 3 from Cython.TestUtils import TransformTest 4 from Cython.Compiler.TreePath import find_first, find_all 5 from Cython.Compiler import Nodes, ExprNodes 6 7 class TestTreePath(TransformTest): 8 _tree = None 9 10 def _build_tree(self): 11 if self._tree is None: 12 self._tree = self.run_pipeline([], u""" 13 def decorator(fun): # DefNode 14 return fun # ReturnStatNode, NameNode 15 @decorator # NameNode 16 def decorated(): # DefNode 17 pass 18 """) 19 return self._tree 20 21 def test_node_path(self): 22 t = self._build_tree() 23 self.assertEquals(2, len(find_all(t, "//DefNode"))) 24 self.assertEquals(2, len(find_all(t, "//NameNode"))) 25 self.assertEquals(1, len(find_all(t, "//ReturnStatNode"))) 26 self.assertEquals(1, len(find_all(t, "//DefNode//ReturnStatNode"))) 27 28 def test_node_path_star(self): 29 t = self._build_tree() 30 self.assertEquals(10, len(find_all(t, "//*"))) 31 self.assertEquals(8, len(find_all(t, "//DefNode//*"))) 32 self.assertEquals(0, len(find_all(t, "//NameNode//*"))) 33 34 def test_node_path_attribute(self): 35 t = self._build_tree() 36 self.assertEquals(2, len(find_all(t, "//NameNode/@name"))) 37 self.assertEquals(['fun', 'decorator'], find_all(t, "//NameNode/@name")) 38 39 def test_node_path_attribute_dotted(self): 40 t = self._build_tree() 41 self.assertEquals(1, len(find_all(t, "//ReturnStatNode/@value.name"))) 42 self.assertEquals(['fun'], find_all(t, "//ReturnStatNode/@value.name")) 43 44 def test_node_path_child(self): 45 t = self._build_tree() 46 self.assertEquals(1, len(find_all(t, "//DefNode/ReturnStatNode/NameNode"))) 47 self.assertEquals(1, len(find_all(t, "//ReturnStatNode/NameNode"))) 48 49 def test_node_path_node_predicate(self): 50 t = self._build_tree() 51 self.assertEquals(0, len(find_all(t, "//DefNode[.//ForInStatNode]"))) 52 self.assertEquals(2, len(find_all(t, "//DefNode[.//NameNode]"))) 53 self.assertEquals(1, len(find_all(t, "//ReturnStatNode[./NameNode]"))) 54 self.assertEquals(Nodes.ReturnStatNode, 55 type(find_first(t, "//ReturnStatNode[./NameNode]"))) 56 57 def test_node_path_node_predicate_step(self): 58 t = self._build_tree() 59 self.assertEquals(2, len(find_all(t, "//DefNode[.//NameNode]"))) 60 self.assertEquals(8, len(find_all(t, "//DefNode[.//NameNode]//*"))) 61 self.assertEquals(1, len(find_all(t, "//DefNode[.//NameNode]//ReturnStatNode"))) 62 self.assertEquals(Nodes.ReturnStatNode, 63 type(find_first(t, "//DefNode[.//NameNode]//ReturnStatNode"))) 64 65 def test_node_path_attribute_exists(self): 66 t = self._build_tree() 67 self.assertEquals(2, len(find_all(t, "//NameNode[@name]"))) 68 self.assertEquals(ExprNodes.NameNode, 69 type(find_first(t, "//NameNode[@name]"))) 70 71 def test_node_path_attribute_exists_not(self): 72 t = self._build_tree() 73 self.assertEquals(0, len(find_all(t, "//NameNode[not(@name)]"))) 74 self.assertEquals(2, len(find_all(t, "//NameNode[not(@honking)]"))) 75 76 def test_node_path_and(self): 77 t = self._build_tree() 78 self.assertEquals(1, len(find_all(t, "//DefNode[.//ReturnStatNode and .//NameNode]"))) 79 self.assertEquals(0, len(find_all(t, "//NameNode[@honking and @name]"))) 80 self.assertEquals(0, len(find_all(t, "//NameNode[@name and @honking]"))) 81 self.assertEquals(2, len(find_all(t, "//DefNode[.//NameNode[@name] and @name]"))) 82 83 def test_node_path_attribute_string_predicate(self): 84 t = self._build_tree() 85 self.assertEquals(1, len(find_all(t, "//NameNode[@name = 'decorator']"))) 86 87 def test_node_path_recursive_predicate(self): 88 t = self._build_tree() 89 self.assertEquals(2, len(find_all(t, "//DefNode[.//NameNode[@name]]"))) 90 self.assertEquals(1, len(find_all(t, "//DefNode[.//NameNode[@name = 'decorator']]"))) 91 self.assertEquals(1, len(find_all(t, "//DefNode[.//ReturnStatNode[./NameNode[@name = 'fun']]/NameNode]"))) 92 93 if __name__ == '__main__': 94 unittest.main() 95
