Mercurial > hg
annotate contrib/import-checker.py @ 26504:875e5d89dc86
merge with stable
author | Matt Mackall <mpm@selenic.com> |
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date | Wed, 07 Oct 2015 13:44:48 -0500 |
parents | ae65b1b4cb46 |
children | 1aee2ab0f902 |
rev | line source |
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20036 | 1 import ast |
2 import os | |
3 import sys | |
4 | |
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5 # Import a minimal set of stdlib modules needed for list_stdlib_modules() |
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6 # to work when run from a virtualenv. The modules were chosen empirically |
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7 # so that the return value matches the return value without virtualenv. |
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8 import BaseHTTPServer |
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9 import zlib |
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10 |
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11 # Whitelist of modules that symbols can be directly imported from. |
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12 allowsymbolimports = ( |
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13 '__future__', |
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14 'mercurial.i18n', |
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15 'mercurial.node', |
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16 ) |
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17 |
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18 # Modules that must be aliased because they are commonly confused with |
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19 # common variables and can create aliasing and readability issues. |
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20 requirealias = { |
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21 'ui': 'uimod', |
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22 } |
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23 |
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24 def usingabsolute(root): |
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25 """Whether absolute imports are being used.""" |
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26 if sys.version_info[0] >= 3: |
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27 return True |
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28 |
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29 for node in ast.walk(root): |
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30 if isinstance(node, ast.ImportFrom): |
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31 if node.module == '__future__': |
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32 for n in node.names: |
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33 if n.name == 'absolute_import': |
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34 return True |
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35 |
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36 return False |
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37 |
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38 def dotted_name_of_path(path, trimpure=False): |
20036 | 39 """Given a relative path to a source file, return its dotted module name. |
40 | |
41 >>> dotted_name_of_path('mercurial/error.py') | |
42 'mercurial.error' | |
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43 >>> dotted_name_of_path('mercurial/pure/parsers.py', trimpure=True) |
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44 'mercurial.parsers' |
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45 >>> dotted_name_of_path('zlibmodule.so') |
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46 'zlib' |
20036 | 47 """ |
48 parts = path.split('/') | |
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49 parts[-1] = parts[-1].split('.', 1)[0] # remove .py and .so and .ARCH.so |
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50 if parts[-1].endswith('module'): |
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51 parts[-1] = parts[-1][:-6] |
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52 if trimpure: |
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53 return '.'.join(p for p in parts if p != 'pure') |
20036 | 54 return '.'.join(parts) |
55 | |
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56 def fromlocalfunc(modulename, localmods): |
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57 """Get a function to examine which locally defined module the |
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58 target source imports via a specified name. |
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59 |
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60 `modulename` is an `dotted_name_of_path()`-ed source file path, |
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61 which may have `.__init__` at the end of it, of the target source. |
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62 |
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63 `localmods` is a dict (or set), of which key is an absolute |
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64 `dotted_name_of_path()`-ed source file path of locally defined (= |
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65 Mercurial specific) modules. |
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66 |
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67 This function assumes that module names not existing in |
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68 `localmods` are ones of Python standard libarary. |
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69 |
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70 This function returns the function, which takes `name` argument, |
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71 and returns `(absname, dottedpath, hassubmod)` tuple if `name` |
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72 matches against locally defined module. Otherwise, it returns |
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73 False. |
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74 |
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75 It is assumed that `name` doesn't have `.__init__`. |
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76 |
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77 `absname` is an absolute module name of specified `name` |
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78 (e.g. "hgext.convert"). This can be used to compose prefix for sub |
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79 modules or so. |
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80 |
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81 `dottedpath` is a `dotted_name_of_path()`-ed source file path |
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82 (e.g. "hgext.convert.__init__") of `name`. This is used to look |
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83 module up in `localmods` again. |
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84 |
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85 `hassubmod` is whether it may have sub modules under it (for |
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86 convenient, even though this is also equivalent to "absname != |
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87 dottednpath") |
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88 |
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89 >>> localmods = {'foo.__init__': True, 'foo.foo1': True, |
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90 ... 'foo.bar.__init__': True, 'foo.bar.bar1': True, |
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91 ... 'baz.__init__': True, 'baz.baz1': True } |
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92 >>> fromlocal = fromlocalfunc('foo.xxx', localmods) |
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93 >>> # relative |
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94 >>> fromlocal('foo1') |
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95 ('foo.foo1', 'foo.foo1', False) |
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96 >>> fromlocal('bar') |
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97 ('foo.bar', 'foo.bar.__init__', True) |
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98 >>> fromlocal('bar.bar1') |
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99 ('foo.bar.bar1', 'foo.bar.bar1', False) |
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100 >>> # absolute |
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101 >>> fromlocal('baz') |
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102 ('baz', 'baz.__init__', True) |
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103 >>> fromlocal('baz.baz1') |
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104 ('baz.baz1', 'baz.baz1', False) |
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105 >>> # unknown = maybe standard library |
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106 >>> fromlocal('os') |
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107 False |
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108 >>> fromlocal(None, 1) |
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109 ('foo', 'foo.__init__', True) |
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110 >>> fromlocal2 = fromlocalfunc('foo.xxx.yyy', localmods) |
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111 >>> fromlocal2(None, 2) |
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112 ('foo', 'foo.__init__', True) |
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113 """ |
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114 prefix = '.'.join(modulename.split('.')[:-1]) |
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115 if prefix: |
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116 prefix += '.' |
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117 def fromlocal(name, level=0): |
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118 # name is None when relative imports are used. |
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119 if name is None: |
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120 # If relative imports are used, level must not be absolute. |
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121 assert level > 0 |
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122 candidates = ['.'.join(modulename.split('.')[:-level])] |
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123 else: |
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124 # Check relative name first. |
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125 candidates = [prefix + name, name] |
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126 |
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127 for n in candidates: |
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128 if n in localmods: |
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129 return (n, n, False) |
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130 dottedpath = n + '.__init__' |
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131 if dottedpath in localmods: |
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132 return (n, dottedpath, True) |
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133 return False |
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134 return fromlocal |
20036 | 135 |
136 def list_stdlib_modules(): | |
137 """List the modules present in the stdlib. | |
138 | |
139 >>> mods = set(list_stdlib_modules()) | |
140 >>> 'BaseHTTPServer' in mods | |
141 True | |
142 | |
143 os.path isn't really a module, so it's missing: | |
144 | |
145 >>> 'os.path' in mods | |
146 False | |
147 | |
148 sys requires special treatment, because it's baked into the | |
149 interpreter, but it should still appear: | |
150 | |
151 >>> 'sys' in mods | |
152 True | |
153 | |
154 >>> 'collections' in mods | |
155 True | |
156 | |
157 >>> 'cStringIO' in mods | |
158 True | |
159 """ | |
160 for m in sys.builtin_module_names: | |
161 yield m | |
162 # These modules only exist on windows, but we should always | |
163 # consider them stdlib. | |
164 for m in ['msvcrt', '_winreg']: | |
165 yield m | |
166 # These get missed too | |
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167 for m in 'ctypes', 'email', 'multiprocessing': |
20036 | 168 yield m |
169 yield 'builtins' # python3 only | |
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170 for m in 'fcntl', 'grp', 'pwd', 'termios': # Unix only |
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171 yield m |
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172 stdlib_prefixes = set([sys.prefix, sys.exec_prefix]) |
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173 # We need to supplement the list of prefixes for the search to work |
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174 # when run from within a virtualenv. |
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175 for mod in (BaseHTTPServer, zlib): |
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176 try: |
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177 # Not all module objects have a __file__ attribute. |
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178 filename = mod.__file__ |
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179 except AttributeError: |
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180 continue |
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181 dirname = os.path.dirname(filename) |
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182 for prefix in stdlib_prefixes: |
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183 if dirname.startswith(prefix): |
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184 # Then this directory is redundant. |
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185 break |
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186 else: |
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187 stdlib_prefixes.add(dirname) |
20036 | 188 for libpath in sys.path: |
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189 # We want to walk everything in sys.path that starts with |
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190 # something in stdlib_prefixes. check-code suppressed because |
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191 # the ast module used by this script implies the availability |
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192 # of any(). |
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193 if not any(libpath.startswith(p) for p in stdlib_prefixes): # no-py24 |
20036 | 194 continue |
195 for top, dirs, files in os.walk(libpath): | |
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196 for i, d in reversed(list(enumerate(dirs))): |
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197 if (not os.path.exists(os.path.join(top, d, '__init__.py')) |
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198 or top == libpath and d in ('hgext', 'mercurial')): |
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199 del dirs[i] |
20036 | 200 for name in files: |
201 if name == '__init__.py': | |
202 continue | |
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203 if not name.endswith(('.py', '.so', '.pyc', '.pyo', '.pyd')): |
20036 | 204 continue |
205 full_path = os.path.join(top, name) | |
206 rel_path = full_path[len(libpath) + 1:] | |
207 mod = dotted_name_of_path(rel_path) | |
208 yield mod | |
209 | |
210 stdlib_modules = set(list_stdlib_modules()) | |
211 | |
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212 def imported_modules(source, modulename, localmods, ignore_nested=False): |
20036 | 213 """Given the source of a file as a string, yield the names |
214 imported by that file. | |
215 | |
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216 Args: |
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217 source: The python source to examine as a string. |
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218 modulename: of specified python source (may have `__init__`) |
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219 localmods: dict of locally defined module names (may have `__init__`) |
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220 ignore_nested: If true, import statements that do not start in |
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221 column zero will be ignored. |
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222 |
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223 Returns: |
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224 A list of absolute module names imported by the given source. |
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225 |
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226 >>> modulename = 'foo.xxx' |
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227 >>> localmods = {'foo.__init__': True, |
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228 ... 'foo.foo1': True, 'foo.foo2': True, |
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229 ... 'foo.bar.__init__': True, 'foo.bar.bar1': True, |
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230 ... 'baz.__init__': True, 'baz.baz1': True } |
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231 >>> # standard library (= not locally defined ones) |
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232 >>> sorted(imported_modules( |
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233 ... 'from stdlib1 import foo, bar; import stdlib2', |
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234 ... modulename, localmods)) |
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235 [] |
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236 >>> # relative importing |
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237 >>> sorted(imported_modules( |
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238 ... 'import foo1; from bar import bar1', |
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239 ... modulename, localmods)) |
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240 ['foo.bar.__init__', 'foo.bar.bar1', 'foo.foo1'] |
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241 >>> sorted(imported_modules( |
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242 ... 'from bar.bar1 import name1, name2, name3', |
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243 ... modulename, localmods)) |
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244 ['foo.bar.bar1'] |
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245 >>> # absolute importing |
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246 >>> sorted(imported_modules( |
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247 ... 'from baz import baz1, name1', |
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248 ... modulename, localmods)) |
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249 ['baz.__init__', 'baz.baz1'] |
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250 >>> # mixed importing, even though it shouldn't be recommended |
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251 >>> sorted(imported_modules( |
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252 ... 'import stdlib, foo1, baz', |
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253 ... modulename, localmods)) |
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254 ['baz.__init__', 'foo.foo1'] |
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255 >>> # ignore_nested |
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256 >>> sorted(imported_modules( |
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257 ... '''import foo |
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258 ... def wat(): |
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259 ... import bar |
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260 ... ''', modulename, localmods)) |
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261 ['foo.__init__', 'foo.bar.__init__'] |
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262 >>> sorted(imported_modules( |
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263 ... '''import foo |
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264 ... def wat(): |
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265 ... import bar |
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266 ... ''', modulename, localmods, ignore_nested=True)) |
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267 ['foo.__init__'] |
20036 | 268 """ |
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269 fromlocal = fromlocalfunc(modulename, localmods) |
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271 if ignore_nested and getattr(node, 'col_offset', 0) > 0: |
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272 continue |
20036 | 273 if isinstance(node, ast.Import): |
274 for n in node.names: | |
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275 found = fromlocal(n.name) |
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276 if not found: |
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277 # this should import standard library |
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278 continue |
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279 yield found[1] |
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281 found = fromlocal(node.module, node.level) |
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282 if not found: |
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283 # this should import standard library |
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284 continue |
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285 |
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286 absname, dottedpath, hassubmod = found |
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287 yield dottedpath |
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288 if not hassubmod: |
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289 # examination of "node.names" should be redundant |
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290 # e.g.: from mercurial.node import nullid, nullrev |
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291 continue |
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292 |
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293 prefix = absname + '.' |
20036 | 294 for n in node.names: |
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295 found = fromlocal(prefix + n.name) |
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296 if not found: |
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297 # this should be a function or a property of "node.module" |
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298 continue |
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299 yield found[1] |
20036 | 300 |
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301 def verify_import_convention(module, source): |
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302 """Verify imports match our established coding convention. |
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303 |
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304 We have 2 conventions: legacy and modern. The modern convention is in |
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305 effect when using absolute imports. |
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306 |
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307 The legacy convention only looks for mixed imports. The modern convention |
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308 is much more thorough. |
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309 """ |
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310 root = ast.parse(source) |
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311 absolute = usingabsolute(root) |
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312 |
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313 if absolute: |
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314 return verify_modern_convention(module, root) |
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315 else: |
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316 return verify_stdlib_on_own_line(root) |
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317 |
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318 def verify_modern_convention(module, root): |
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319 """Verify a file conforms to the modern import convention rules. |
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320 |
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321 The rules of the modern convention are: |
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322 |
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323 * Ordering is stdlib followed by local imports. Each group is lexically |
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324 sorted. |
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325 * Importing multiple modules via "import X, Y" is not allowed: use |
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326 separate import statements. |
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327 * Importing multiple modules via "from X import ..." is allowed if using |
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328 parenthesis and one entry per line. |
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329 * Only 1 relative import statement per import level ("from .", "from ..") |
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330 is allowed. |
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331 * Relative imports from higher levels must occur before lower levels. e.g. |
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332 "from .." must be before "from .". |
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333 * Imports from peer packages should use relative import (e.g. do not |
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334 "import mercurial.foo" from a "mercurial.*" module). |
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335 * Symbols can only be imported from specific modules (see |
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336 `allowsymbolimports`). For other modules, first import the module then |
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337 assign the symbol to a module-level variable. In addition, these imports |
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338 must be performed before other relative imports. This rule only |
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339 applies to import statements outside of any blocks. |
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340 * Relative imports from the standard library are not allowed. |
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341 * Certain modules must be aliased to alternate names to avoid aliasing |
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342 and readability problems. See `requirealias`. |
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343 """ |
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344 topmodule = module.split('.')[0] |
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345 |
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346 # Whether a local/non-stdlib import has been performed. |
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347 seenlocal = False |
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348 # Whether a relative, non-symbol import has been seen. |
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349 seennonsymbolrelative = False |
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350 # The last name to be imported (for sorting). |
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351 lastname = None |
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352 # Relative import levels encountered so far. |
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353 seenlevels = set() |
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354 |
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355 for node in ast.walk(root): |
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356 if isinstance(node, ast.Import): |
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357 # Disallow "import foo, bar" and require separate imports |
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358 # for each module. |
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359 if len(node.names) > 1: |
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360 yield 'multiple imported names: %s' % ', '.join( |
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361 n.name for n in node.names) |
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362 |
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363 name = node.names[0].name |
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364 asname = node.names[0].asname |
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365 |
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366 # Ignore sorting rules on imports inside blocks. |
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367 if node.col_offset == 0: |
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368 if lastname and name < lastname: |
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369 yield 'imports not lexically sorted: %s < %s' % ( |
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370 name, lastname) |
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371 |
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372 lastname = name |
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373 |
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374 # stdlib imports should be before local imports. |
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375 stdlib = name in stdlib_modules |
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376 if stdlib and seenlocal and node.col_offset == 0: |
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377 yield 'stdlib import follows local import: %s' % name |
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378 |
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379 if not stdlib: |
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380 seenlocal = True |
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381 |
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382 # Import of sibling modules should use relative imports. |
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383 topname = name.split('.')[0] |
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384 if topname == topmodule: |
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385 yield 'import should be relative: %s' % name |
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386 |
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387 if name in requirealias and asname != requirealias[name]: |
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388 yield '%s module must be "as" aliased to %s' % ( |
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389 name, requirealias[name]) |
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390 |
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391 elif isinstance(node, ast.ImportFrom): |
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392 # Resolve the full imported module name. |
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393 if node.level > 0: |
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394 fullname = '.'.join(module.split('.')[:-node.level]) |
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395 if node.module: |
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396 fullname += '.%s' % node.module |
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397 else: |
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398 assert node.module |
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399 fullname = node.module |
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400 |
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401 topname = fullname.split('.')[0] |
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402 if topname == topmodule: |
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403 yield 'import should be relative: %s' % fullname |
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404 |
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405 # __future__ is special since it needs to come first and use |
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406 # symbol import. |
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407 if fullname != '__future__': |
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408 if not fullname or fullname in stdlib_modules: |
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409 yield 'relative import of stdlib module' |
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410 else: |
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411 seenlocal = True |
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412 |
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413 # Direct symbol import is only allowed from certain modules and |
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414 # must occur before non-symbol imports. |
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415 if node.module and node.col_offset == 0: |
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416 if fullname not in allowsymbolimports: |
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417 yield 'direct symbol import from %s' % fullname |
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418 |
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419 if seennonsymbolrelative: |
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420 yield ('symbol import follows non-symbol import: %s' % |
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421 fullname) |
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422 |
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423 if not node.module: |
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424 assert node.level |
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425 seennonsymbolrelative = True |
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426 |
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427 # Only allow 1 group per level. |
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428 if node.level in seenlevels and node.col_offset == 0: |
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429 yield 'multiple "from %s import" statements' % ( |
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430 '.' * node.level) |
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431 |
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432 # Higher-level groups come before lower-level groups. |
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433 if any(node.level > l for l in seenlevels): |
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434 yield 'higher-level import should come first: %s' % ( |
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435 fullname) |
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436 |
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437 seenlevels.add(node.level) |
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438 |
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439 # Entries in "from .X import ( ... )" lists must be lexically |
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440 # sorted. |
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441 lastentryname = None |
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442 |
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443 for n in node.names: |
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444 if lastentryname and n.name < lastentryname: |
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445 yield 'imports from %s not lexically sorted: %s < %s' % ( |
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446 fullname, n.name, lastentryname) |
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447 |
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448 lastentryname = n.name |
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449 |
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450 if n.name in requirealias and n.asname != requirealias[n.name]: |
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451 yield '%s from %s must be "as" aliased to %s' % ( |
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452 n.name, fullname, requirealias[n.name]) |
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453 |
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454 def verify_stdlib_on_own_line(root): |
20036 | 455 """Given some python source, verify that stdlib imports are done |
456 in separate statements from relative local module imports. | |
457 | |
458 Observing this limitation is important as it works around an | |
459 annoying lib2to3 bug in relative import rewrites: | |
460 http://bugs.python.org/issue19510. | |
461 | |
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462 >>> list(verify_stdlib_on_own_line(ast.parse('import sys, foo'))) |
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463 ['mixed imports\\n stdlib: sys\\n relative: foo'] |
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464 >>> list(verify_stdlib_on_own_line(ast.parse('import sys, os'))) |
20036 | 465 [] |
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466 >>> list(verify_stdlib_on_own_line(ast.parse('import foo, bar'))) |
20036 | 467 [] |
468 """ | |
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469 for node in ast.walk(root): |
20036 | 470 if isinstance(node, ast.Import): |
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471 from_stdlib = {False: [], True: []} |
20036 | 472 for n in node.names: |
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473 from_stdlib[n.name in stdlib_modules].append(n.name) |
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474 if from_stdlib[True] and from_stdlib[False]: |
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475 yield ('mixed imports\n stdlib: %s\n relative: %s' % |
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476 (', '.join(sorted(from_stdlib[True])), |
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477 ', '.join(sorted(from_stdlib[False])))) |
20036 | 478 |
479 class CircularImport(Exception): | |
480 pass | |
481 | |
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482 def checkmod(mod, imports): |
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483 shortest = {} |
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484 visit = [[mod]] |
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485 while visit: |
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486 path = visit.pop(0) |
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487 for i in sorted(imports.get(path[-1], [])): |
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488 if len(path) < shortest.get(i, 1000): |
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489 shortest[i] = len(path) |
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490 if i in path: |
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491 if i == path[0]: |
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492 raise CircularImport(path) |
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493 continue |
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494 visit.append(path + [i]) |
20036 | 495 |
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496 def rotatecycle(cycle): |
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497 """arrange a cycle so that the lexicographically first module listed first |
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498 |
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499 >>> rotatecycle(['foo', 'bar']) |
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500 ['bar', 'foo', 'bar'] |
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501 """ |
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502 lowest = min(cycle) |
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503 idx = cycle.index(lowest) |
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504 return cycle[idx:] + cycle[:idx] + [lowest] |
20036 | 505 |
506 def find_cycles(imports): | |
507 """Find cycles in an already-loaded import graph. | |
508 | |
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10e6c4b7121b
import-checker: don't treat modules as relative one if not found
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25174
diff
changeset
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509 All module names recorded in `imports` should be absolute one. |
10e6c4b7121b
import-checker: don't treat modules as relative one if not found
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25174
diff
changeset
|
510 |
10e6c4b7121b
import-checker: don't treat modules as relative one if not found
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25174
diff
changeset
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511 >>> imports = {'top.foo': ['top.bar', 'os.path', 'top.qux'], |
10e6c4b7121b
import-checker: don't treat modules as relative one if not found
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25174
diff
changeset
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512 ... 'top.bar': ['top.baz', 'sys'], |
10e6c4b7121b
import-checker: don't treat modules as relative one if not found
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25174
diff
changeset
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513 ... 'top.baz': ['top.foo'], |
10e6c4b7121b
import-checker: don't treat modules as relative one if not found
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25174
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changeset
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514 ... 'top.qux': ['top.foo']} |
20036 | 515 >>> print '\\n'.join(sorted(find_cycles(imports))) |
24487
642d245ff537
import-checker: fix rotatecycle
Matt Mackall <mpm@selenic.com>
parents:
22975
diff
changeset
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516 top.bar -> top.baz -> top.foo -> top.bar |
642d245ff537
import-checker: fix rotatecycle
Matt Mackall <mpm@selenic.com>
parents:
22975
diff
changeset
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517 top.foo -> top.qux -> top.foo |
20036 | 518 """ |
24491
784b278b349c
import-checker: rotatecycle is actually the canonical cycle key
Matt Mackall <mpm@selenic.com>
parents:
24490
diff
changeset
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519 cycles = set() |
20036 | 520 for mod in sorted(imports.iterkeys()): |
521 try: | |
24490
fb4639d5268e
import-checker: make search algorithm non-recursive breadth-first
Matt Mackall <mpm@selenic.com>
parents:
24489
diff
changeset
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522 checkmod(mod, imports) |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25175
diff
changeset
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523 except CircularImport as e: |
20036 | 524 cycle = e.args[0] |
24491
784b278b349c
import-checker: rotatecycle is actually the canonical cycle key
Matt Mackall <mpm@selenic.com>
parents:
24490
diff
changeset
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525 cycles.add(" -> ".join(rotatecycle(cycle))) |
784b278b349c
import-checker: rotatecycle is actually the canonical cycle key
Matt Mackall <mpm@selenic.com>
parents:
24490
diff
changeset
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526 return cycles |
20036 | 527 |
528 def _cycle_sortkey(c): | |
529 return len(c), c | |
530 | |
531 def main(argv): | |
25063
723e364488f4
import-checker: add xargs like mode
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
24669
diff
changeset
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532 if len(argv) < 2 or (argv[1] == '-' and len(argv) > 2): |
723e364488f4
import-checker: add xargs like mode
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
24669
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changeset
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533 print 'Usage: %s {-|file [file] [file] ...}' |
20036 | 534 return 1 |
25063
723e364488f4
import-checker: add xargs like mode
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
24669
diff
changeset
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535 if argv[1] == '-': |
723e364488f4
import-checker: add xargs like mode
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
24669
diff
changeset
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536 argv = argv[:1] |
723e364488f4
import-checker: add xargs like mode
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
24669
diff
changeset
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537 argv.extend(l.rstrip() for l in sys.stdin.readlines()) |
25064
3bbbadf69d0a
import-checker: loop to get list of locally defined modules at first
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25063
diff
changeset
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538 localmods = {} |
20036 | 539 used_imports = {} |
540 any_errors = False | |
541 for source_path in argv[1:]: | |
25064
3bbbadf69d0a
import-checker: loop to get list of locally defined modules at first
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25063
diff
changeset
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542 modname = dotted_name_of_path(source_path, trimpure=True) |
3bbbadf69d0a
import-checker: loop to get list of locally defined modules at first
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25063
diff
changeset
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543 localmods[modname] = source_path |
3bbbadf69d0a
import-checker: loop to get list of locally defined modules at first
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25063
diff
changeset
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544 for modname, source_path in sorted(localmods.iteritems()): |
20036 | 545 f = open(source_path) |
546 src = f.read() | |
20037
957b43371928
import-checker: ignore nested imports
Augie Fackler <raf@durin42.com>
parents:
20036
diff
changeset
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547 used_imports[modname] = sorted( |
25174
86298718b01c
import-checker: make imported_modules yield absolute dotted_name_of_path
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25173
diff
changeset
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548 imported_modules(src, modname, localmods, ignore_nested=True)) |
25702
ab2c5163900e
import-checker: establish new function for verifying import conventions
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25701
diff
changeset
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549 for error in verify_import_convention(modname, src): |
20036 | 550 any_errors = True |
551 print source_path, error | |
552 f.close() | |
553 cycles = find_cycles(used_imports) | |
554 if cycles: | |
555 firstmods = set() | |
556 for c in sorted(cycles, key=_cycle_sortkey): | |
557 first = c.split()[0] | |
558 # As a rough cut, ignore any cycle that starts with the | |
559 # same module as some other cycle. Otherwise we see lots | |
560 # of cycles that are effectively duplicates. | |
561 if first in firstmods: | |
562 continue | |
563 print 'Import cycle:', c | |
564 firstmods.add(first) | |
565 any_errors = True | |
25731
cd1daab5d036
import-checker.py: exit with code 0 if no error is detected
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
25703
diff
changeset
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566 return any_errors != 0 |
20036 | 567 |
568 if __name__ == '__main__': | |
569 sys.exit(int(main(sys.argv))) |