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1
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import sys |
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2
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import ast |
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3
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4
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5
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def add_imports(node): |
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6
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"""Provide context of imports Module""" |
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7
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return ImportTransformer().visit(node) |
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8
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9
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10
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def is_void_function(fun): |
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11
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finder = ReturnFinder() |
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12
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finder.visit(fun) |
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13
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return not finder.returns |
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14
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15
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if sys.version_info[0] >= 3: |
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16
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def get_id(var): |
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17
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if isinstance(var, ast.alias): |
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18
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return var.name |
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19
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elif isinstance(var, ast.Name): |
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20
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return var.id |
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21
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elif isinstance(var, ast.arg): |
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22
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return var.arg |
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23
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else: |
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24
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def get_id(var): |
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25
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if isinstance(var, ast.alias): |
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26
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return var.name |
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27
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elif isinstance(var, ast.Name): |
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28
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return var.id |
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29
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30
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31
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class ReturnFinder(ast.NodeVisitor): |
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32
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returns = False |
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33
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34
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def visit_Return(self, node): |
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35
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self.returns = True |
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36
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37
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38
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class FunctionTransformer(ast.NodeTransformer): |
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39
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"""Tracks defined functions in scope""" |
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40
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def visit_Module(self, node): |
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41
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node.defined_functions = [] |
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42
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self.generic_visit(node) |
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43
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return node |
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44
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45
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def visit_FunctionDef(self, node): |
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46
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node.defined_functions = [] |
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47
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node.scopes[-2].defined_functions.append(node) |
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48
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self.generic_visit(node) |
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49
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return node |
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50
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51
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def visit_ImportFrom(self, node): |
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52
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for name in node.names: |
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53
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node.scopes[-1].defined_functions.append(name) |
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54
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return node |
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55
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56
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57
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class CalledWithTransformer(ast.NodeTransformer): |
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58
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""" |
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59
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Tracks whether variables or functions get |
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60
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used as arguments of other functions |
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61
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""" |
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62
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def visit_Assign(self, node): |
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63
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for target in node.targets: |
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64
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target.called_with = [] |
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65
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return node |
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66
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67
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def visit_FunctionDef(self, node): |
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68
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node.called_with = [] |
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69
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self.generic_visit(node) |
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70
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return node |
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71
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72
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def visit_Call(self, node): |
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73
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for arg in node.args: |
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74
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if isinstance(arg, ast.Name): |
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75
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var = node.scopes.find(arg.id) |
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76
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var.called_with.append(node) |
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77
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self.generic_visit(node) |
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78
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return node |
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79
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80
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81
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class AttributeCallTransformer(ast.NodeTransformer): |
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82
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"""Tracks attribute function calls on variables""" |
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83
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def visit_Assign(self, node): |
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84
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for target in node.targets: |
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85
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target.calls = [] |
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86
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return node |
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87
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88
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def visit_Call(self, node): |
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89
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if isinstance(node.func, ast.Attribute): |
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90
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var = node.scopes.find(node.func.value.id) |
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91
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var.calls.append(node) |
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92
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return node |
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93
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94
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95
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class ImportTransformer(ast.NodeTransformer): |
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96
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"""Adds imports to scope block""" |
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97
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def visit_ImportFrom(self, node): |
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98
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for name in node.names: |
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99
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name.imported_from = node |
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100
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name.scopes[-1].imports.append(name) |
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101
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return node |
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102
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103
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def visit_Module(self, node): |
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104
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node.imports = [] |
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105
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self.generic_visit(node) |
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106
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return node |
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107
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lukasmartinelli /
py14
