Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/checkappend.py @ 58765:2ba7677bfa95 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
testCopysign was defined twice in test_math; combine the definitions
author Mark Dickinson <dickinsm@gmail.com>
date Sat, 06 Feb 2010 23:11:25 +0000
parents 71a294bd7950
children 6b18a095c2e7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #! /usr/bin/env python
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2
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3 # Released to the public domain, by Tim Peters, 28 February 2000.
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4
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5 """checkappend.py -- search for multi-argument .append() calls.
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6
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7 Usage: specify one or more file or directory paths:
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8 checkappend [-v] file_or_dir [file_or_dir] ...
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9
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10 Each file_or_dir is checked for multi-argument .append() calls. When
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11 a directory, all .py files in the directory, and recursively in its
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12 subdirectories, are checked.
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13
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14 Use -v for status msgs. Use -vv for more status msgs.
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15
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16 In the absence of -v, the only output is pairs of the form
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17
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18 filename(linenumber):
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19 line containing the suspicious append
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20
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21 Note that this finds multi-argument append calls regardless of whether
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22 they're attached to list objects. If a module defines a class with an
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23 append method that takes more than one argument, calls to that method
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24 will be listed.
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25
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26 Note that this will not find multi-argument list.append calls made via a
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27 bound method object. For example, this is not caught:
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28
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29 somelist = []
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30 push = somelist.append
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31 push(1, 2, 3)
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32 """
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33
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34 __version__ = 1, 0, 0
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35
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36 import os
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37 import sys
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38 import getopt
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39 import tokenize
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40
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41 verbose = 0
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42
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43 def errprint(*args):
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44 msg = ' '.join(args)
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45 sys.stderr.write(msg)
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46 sys.stderr.write("\n")
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47
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48 def main():
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49 args = sys.argv[1:]
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50 global verbose
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51 try:
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52 opts, args = getopt.getopt(sys.argv[1:], "v")
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53 except getopt.error, msg:
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54 errprint(str(msg) + "\n\n" + __doc__)
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55 return
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56 for opt, optarg in opts:
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57 if opt == '-v':
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58 verbose = verbose + 1
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59 if not args:
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60 errprint(__doc__)
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61 return
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62 for arg in args:
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63 check(arg)
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64
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65 def check(file):
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66 if os.path.isdir(file) and not os.path.islink(file):
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67 if verbose:
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68 print "%r: listing directory" % (file,)
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69 names = os.listdir(file)
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70 for name in names:
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71 fullname = os.path.join(file, name)
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72 if ((os.path.isdir(fullname) and
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73 not os.path.islink(fullname))
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74 or os.path.normcase(name[-3:]) == ".py"):
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75 check(fullname)
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76 return
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77
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78 try:
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79 f = open(file)
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80 except IOError, msg:
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81 errprint("%r: I/O Error: %s" % (file, msg))
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82 return
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83
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84 if verbose > 1:
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85 print "checking %r ..." % (file,)
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86
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87 ok = AppendChecker(file, f).run()
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88 if verbose and ok:
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89 print "%r: Clean bill of health." % (file,)
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90
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91 [FIND_DOT,
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92 FIND_APPEND,
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93 FIND_LPAREN,
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94 FIND_COMMA,
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95 FIND_STMT] = range(5)
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96
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97 class AppendChecker:
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98 def __init__(self, fname, file):
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99 self.fname = fname
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100 self.file = file
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101 self.state = FIND_DOT
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102 self.nerrors = 0
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103
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104 def run(self):
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105 try:
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106 tokenize.tokenize(self.file.readline, self.tokeneater)
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107 except tokenize.TokenError, msg:
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108 errprint("%r: Token Error: %s" % (self.fname, msg))
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109 self.nerrors = self.nerrors + 1
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110 return self.nerrors == 0
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111
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112 def tokeneater(self, type, token, start, end, line,
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113 NEWLINE=tokenize.NEWLINE,
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114 JUNK=(tokenize.COMMENT, tokenize.NL),
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115 OP=tokenize.OP,
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116 NAME=tokenize.NAME):
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117
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118 state = self.state
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119
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120 if type in JUNK:
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121 pass
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122
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123 elif state is FIND_DOT:
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124 if type is OP and token == ".":
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125 state = FIND_APPEND
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126
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127 elif state is FIND_APPEND:
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128 if type is NAME and token == "append":
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129 self.line = line
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130 self.lineno = start[0]
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131 state = FIND_LPAREN
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132 else:
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133 state = FIND_DOT
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134
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135 elif state is FIND_LPAREN:
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136 if type is OP and token == "(":
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137 self.level = 1
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138 state = FIND_COMMA
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139 else:
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140 state = FIND_DOT
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141
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142 elif state is FIND_COMMA:
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143 if type is OP:
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144 if token in ("(", "{", "["):
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145 self.level = self.level + 1
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146 elif token in (")", "}", "]"):
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147 self.level = self.level - 1
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148 if self.level == 0:
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149 state = FIND_DOT
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150 elif token == "," and self.level == 1:
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151 self.nerrors = self.nerrors + 1
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152 print "%s(%d):\n%s" % (self.fname, self.lineno,
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153 self.line)
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154 # don't gripe about this stmt again
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155 state = FIND_STMT
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156
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157 elif state is FIND_STMT:
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158 if type is NEWLINE:
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159 state = FIND_DOT
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160
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161 else:
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71a294bd7950 Replace backticks with repr() or "%r"
Walter Dörwald <walter@livinglogic.de>
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162 raise SystemError("unknown internal state '%r'" % (state,))
11879
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163
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164 self.state = state
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165
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166 if __name__ == '__main__':
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167 main()