Mercurial > hg
annotate mercurial/dagparser.py @ 36265:b44fac3a49fb
py3: factor out byterepr() which returns an asciified value on py3
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 17 Feb 2018 18:09:56 +0900 |
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1 # dagparser.py - parser and generator for concise description of DAGs |
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2 # |
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3 # Copyright 2010 Peter Arrenbrecht <peter@arrenbrecht.ch> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import re |
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11 import string |
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12 |
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13 from .i18n import _ |
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14 from . import ( |
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15 error, |
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16 pycompat, |
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17 util, |
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18 ) |
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19 |
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20 def parsedag(desc): |
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21 '''parses a DAG from a concise textual description; generates events |
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22 |
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23 "+n" is a linear run of n nodes based on the current default parent |
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24 "." is a single node based on the current default parent |
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25 "$" resets the default parent to -1 (implied at the start); |
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26 otherwise the default parent is always the last node created |
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27 "<p" sets the default parent to the backref p |
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28 "*p" is a fork at parent p, where p is a backref |
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29 "*p1/p2/.../pn" is a merge of parents p1..pn, where the pi are backrefs |
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30 "/p2/.../pn" is a merge of the preceding node and p2..pn |
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31 ":name" defines a label for the preceding node; labels can be redefined |
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32 "@text" emits an annotation event for text |
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33 "!command" emits an action event for the current node |
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34 "!!my command\n" is like "!", but to the end of the line |
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35 "#...\n" is a comment up to the end of the line |
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36 |
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37 Whitespace between the above elements is ignored. |
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38 |
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39 A backref is either |
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40 * a number n, which references the node curr-n, where curr is the current |
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41 node, or |
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42 * the name of a label you placed earlier using ":name", or |
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43 * empty to denote the default parent. |
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44 |
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45 All string valued-elements are either strictly alphanumeric, or must |
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46 be enclosed in double quotes ("..."), with "\" as escape character. |
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47 |
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48 Generates sequence of |
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49 |
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50 ('n', (id, [parentids])) for node creation |
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51 ('l', (id, labelname)) for labels on nodes |
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52 ('a', text) for annotations |
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53 ('c', command) for actions (!) |
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54 ('C', command) for line actions (!!) |
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55 |
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56 Examples |
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57 -------- |
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58 |
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59 Example of a complex graph (output not shown for brevity): |
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60 |
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61 >>> len(list(parsedag(b""" |
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62 ... |
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63 ... +3 # 3 nodes in linear run |
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64 ... :forkhere # a label for the last of the 3 nodes from above |
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65 ... +5 # 5 more nodes on one branch |
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66 ... :mergethis # label again |
17500 | 67 ... <forkhere # set default parent to labeled fork node |
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68 ... +10 # 10 more nodes on a parallel branch |
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69 ... @stable # following nodes will be annotated as "stable" |
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70 ... +5 # 5 nodes in stable |
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71 ... !addfile # custom command; could trigger new file in next node |
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72 ... +2 # two more nodes |
17500 | 73 ... /mergethis # merge last node with labeled node |
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74 ... +4 # 4 more nodes descending from merge node |
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75 ... |
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76 ... """))) |
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77 34 |
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78 |
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79 Empty list: |
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80 |
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81 >>> list(parsedag(b"")) |
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82 [] |
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83 |
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84 A simple linear run: |
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85 |
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86 >>> list(parsedag(b"+3")) |
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87 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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88 |
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89 Some non-standard ways to define such runs: |
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90 |
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91 >>> list(parsedag(b"+1+2")) |
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92 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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93 |
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94 >>> list(parsedag(b"+1*1*")) |
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95 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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96 |
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97 >>> list(parsedag(b"*")) |
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98 [('n', (0, [-1]))] |
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99 |
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100 >>> list(parsedag(b"...")) |
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101 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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102 |
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103 A fork and a join, using numeric back references: |
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104 |
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105 >>> list(parsedag(b"+2*2*/2")) |
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106 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [0])), ('n', (3, [2, 1]))] |
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107 |
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108 >>> list(parsedag(b"+2<2+1/2")) |
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109 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [0])), ('n', (3, [2, 1]))] |
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110 |
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111 Placing a label: |
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112 |
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113 >>> list(parsedag(b"+1 :mylabel +1")) |
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114 [('n', (0, [-1])), ('l', (0, 'mylabel')), ('n', (1, [0]))] |
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115 |
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116 An empty label (silly, really): |
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117 |
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118 >>> list(parsedag(b"+1:+1")) |
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119 [('n', (0, [-1])), ('l', (0, '')), ('n', (1, [0]))] |
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120 |
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121 Fork and join, but with labels instead of numeric back references: |
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122 |
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123 >>> list(parsedag(b"+1:f +1:p2 *f */p2")) |
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124 [('n', (0, [-1])), ('l', (0, 'f')), ('n', (1, [0])), ('l', (1, 'p2')), |
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125 ('n', (2, [0])), ('n', (3, [2, 1]))] |
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126 |
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127 >>> list(parsedag(b"+1:f +1:p2 <f +1 /p2")) |
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128 [('n', (0, [-1])), ('l', (0, 'f')), ('n', (1, [0])), ('l', (1, 'p2')), |
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129 ('n', (2, [0])), ('n', (3, [2, 1]))] |
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130 |
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131 Restarting from the root: |
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132 |
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133 >>> list(parsedag(b"+1 $ +1")) |
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134 [('n', (0, [-1])), ('n', (1, [-1]))] |
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135 |
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136 Annotations, which are meant to introduce sticky state for subsequent nodes: |
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137 |
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138 >>> list(parsedag(b"+1 @ann +1")) |
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139 [('n', (0, [-1])), ('a', 'ann'), ('n', (1, [0]))] |
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140 |
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141 >>> list(parsedag(b'+1 @"my annotation" +1')) |
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142 [('n', (0, [-1])), ('a', 'my annotation'), ('n', (1, [0]))] |
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143 |
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144 Commands, which are meant to operate on the most recently created node: |
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145 |
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146 >>> list(parsedag(b"+1 !cmd +1")) |
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147 [('n', (0, [-1])), ('c', 'cmd'), ('n', (1, [0]))] |
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148 |
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149 >>> list(parsedag(b'+1 !"my command" +1')) |
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150 [('n', (0, [-1])), ('c', 'my command'), ('n', (1, [0]))] |
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151 |
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152 >>> list(parsedag(b'+1 !!my command line\\n +1')) |
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153 [('n', (0, [-1])), ('C', 'my command line'), ('n', (1, [0]))] |
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154 |
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155 Comments, which extend to the end of the line: |
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156 |
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157 >>> list(parsedag(b'+1 # comment\\n+1')) |
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158 [('n', (0, [-1])), ('n', (1, [0]))] |
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159 |
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160 Error: |
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161 |
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162 >>> try: list(parsedag(b'+1 bad')) |
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163 ... except Exception as e: print(pycompat.sysstr(bytes(e))) |
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164 invalid character in dag description: bad... |
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165 |
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166 ''' |
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167 if not desc: |
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168 return |
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169 |
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170 wordchars = pycompat.bytestr(string.ascii_letters + string.digits) |
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171 |
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172 labels = {} |
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173 p1 = -1 |
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174 r = 0 |
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175 |
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176 def resolve(ref): |
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177 if not ref: |
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178 return p1 |
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179 elif ref[0] in pycompat.bytestr(string.digits): |
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180 return r - int(ref) |
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181 else: |
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182 return labels[ref] |
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183 |
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184 chiter = pycompat.iterbytestr(desc) |
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185 |
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186 def nextch(): |
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187 return next(chiter, '\0') |
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188 |
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189 def nextrun(c, allow): |
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190 s = '' |
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191 while c in allow: |
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192 s += c |
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193 c = nextch() |
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194 return c, s |
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195 |
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196 def nextdelimited(c, limit, escape): |
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197 s = '' |
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198 while c != limit: |
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199 if c == escape: |
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200 c = nextch() |
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201 s += c |
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202 c = nextch() |
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203 return nextch(), s |
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204 |
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205 def nextstring(c): |
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206 if c == '"': |
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207 return nextdelimited(nextch(), '"', '\\') |
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208 else: |
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209 return nextrun(c, wordchars) |
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210 |
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211 c = nextch() |
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212 while c != '\0': |
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213 while c in pycompat.bytestr(string.whitespace): |
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214 c = nextch() |
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215 if c == '.': |
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216 yield 'n', (r, [p1]) |
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217 p1 = r |
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218 r += 1 |
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219 c = nextch() |
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220 elif c == '+': |
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221 c, digs = nextrun(nextch(), pycompat.bytestr(string.digits)) |
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222 n = int(digs) |
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223 for i in xrange(0, n): |
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224 yield 'n', (r, [p1]) |
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225 p1 = r |
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226 r += 1 |
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227 elif c in '*/': |
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228 if c == '*': |
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parents:
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229 c = nextch() |
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230 c, pref = nextstring(c) |
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231 prefs = [pref] |
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232 while c == '/': |
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233 c, pref = nextstring(nextch()) |
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234 prefs.append(pref) |
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235 ps = [resolve(ref) for ref in prefs] |
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|
236 yield 'n', (r, ps) |
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parents:
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237 p1 = r |
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238 r += 1 |
3201ff1459dd
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parents:
diff
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239 elif c == '<': |
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parents:
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240 c, ref = nextstring(nextch()) |
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parents:
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241 p1 = resolve(ref) |
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parents:
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242 elif c == ':': |
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parents:
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243 c, name = nextstring(nextch()) |
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parents:
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244 labels[name] = p1 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
245 yield 'l', (p1, name) |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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246 elif c == '@': |
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247 c, text = nextstring(nextch()) |
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parents:
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248 yield 'a', text |
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parents:
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249 elif c == '!': |
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parents:
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250 c = nextch() |
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parents:
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251 if c == '!': |
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parents:
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252 cmd = '' |
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parents:
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253 c = nextch() |
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parents:
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254 while c not in '\n\r\0': |
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255 cmd += c |
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parents:
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|
256 c = nextch() |
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parents:
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|
257 yield 'C', cmd |
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258 else: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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|
259 c, cmd = nextstring(c) |
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parents:
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260 yield 'c', cmd |
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parents:
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261 elif c == '#': |
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parents:
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262 while c not in '\n\r\0': |
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263 c = nextch() |
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parents:
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264 elif c == '$': |
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265 p1 = -1 |
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266 c = nextch() |
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parents:
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267 elif c == '\0': |
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268 return # in case it was preceded by whitespace |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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269 else: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
270 s = '' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
271 i = 0 |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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272 while c != '\0' and i < 10: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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273 s += c |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
274 i += 1 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
275 c = nextch() |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25941
diff
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|
276 raise error.Abort(_('invalid character in dag description: ' |
16683 | 277 '%s...') % s) |
11335
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|
278 |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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|
279 def dagtextlines(events, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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280 addspaces=True, |
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parents:
diff
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|
281 wraplabels=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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282 wrapannotations=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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283 wrapcommands=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
284 wrapnonlinear=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
285 usedots=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
286 maxlinewidth=70): |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
287 '''generates single lines for dagtext()''' |
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parents:
diff
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|
288 |
3201ff1459dd
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parents:
diff
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|
289 def wrapstring(text): |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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290 if re.match("^[0-9a-z]*$", text): |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
291 return text |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
292 return '"' + text.replace('\\', '\\\\').replace('"', '\"') + '"' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
293 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
294 def gen(): |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
295 labels = {} |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
296 run = 0 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
297 wantr = 0 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
298 needroot = False |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
299 for kind, data in events: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
300 if kind == 'n': |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
301 r, ps = data |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
302 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
303 # sanity check |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
304 if r != wantr: |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25941
diff
changeset
|
305 raise error.Abort(_("expected id %i, got %i") % (wantr, r)) |
11335
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
306 if not ps: |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
307 ps = [-1] |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
308 else: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
309 for p in ps: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
310 if p >= r: |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25941
diff
changeset
|
311 raise error.Abort(_("parent id %i is larger than " |
12134
26d86a6cf2af
dagparser: translate and lowercase error messages
Martin Geisler <mg@aragost.com>
parents:
11879
diff
changeset
|
312 "current id %i") % (p, r)) |
11335
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
313 wantr += 1 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
314 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
315 # new root? |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
316 p1 = r - 1 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
317 if len(ps) == 1 and ps[0] == -1: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
318 if needroot: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
319 if run: |
34210
8927534cacbc
py3: drop use of str() in dagparser.py
Yuya Nishihara <yuya@tcha.org>
parents:
34209
diff
changeset
|
320 yield '+%d' % run |
11335
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
321 run = 0 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
322 if wrapnonlinear: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
323 yield '\n' |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
324 yield '$' |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
325 p1 = -1 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
326 else: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
327 needroot = True |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
328 if len(ps) == 1 and ps[0] == p1: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
329 if usedots: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
330 yield "." |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
331 else: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
332 run += 1 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
333 else: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
334 if run: |
34210
8927534cacbc
py3: drop use of str() in dagparser.py
Yuya Nishihara <yuya@tcha.org>
parents:
34209
diff
changeset
|
335 yield '+%d' % run |
11335
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
336 run = 0 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
337 if wrapnonlinear: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
338 yield '\n' |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
339 prefs = [] |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
340 for p in ps: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
341 if p == p1: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
342 prefs.append('') |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
343 elif p in labels: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
344 prefs.append(labels[p]) |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
345 else: |
34210
8927534cacbc
py3: drop use of str() in dagparser.py
Yuya Nishihara <yuya@tcha.org>
parents:
34209
diff
changeset
|
346 prefs.append('%d' % (r - p)) |
11335
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
347 yield '*' + '/'.join(prefs) |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
348 else: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
349 if run: |
34210
8927534cacbc
py3: drop use of str() in dagparser.py
Yuya Nishihara <yuya@tcha.org>
parents:
34209
diff
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|
350 yield '+%d' % run |
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351 run = 0 |
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352 if kind == 'l': |
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353 rid, name = data |
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354 labels[rid] = name |
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355 yield ':' + name |
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356 if wraplabels: |
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357 yield '\n' |
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358 elif kind == 'c': |
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359 yield '!' + wrapstring(data) |
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360 if wrapcommands: |
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361 yield '\n' |
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362 elif kind == 'C': |
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363 yield '!!' + data |
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364 yield '\n' |
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365 elif kind == 'a': |
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366 if wrapannotations: |
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367 yield '\n' |
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368 yield '@' + wrapstring(data) |
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369 elif kind == '#': |
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370 yield '#' + data |
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371 yield '\n' |
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372 else: |
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373 raise error.Abort(_("invalid event type in dag: " |
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374 "('%s', '%s')") |
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375 % (util.escapestr(kind), |
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376 util.escapestr(data))) |
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377 if run: |
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378 yield '+%d' % run |
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379 |
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380 line = '' |
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381 for part in gen(): |
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382 if part == '\n': |
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383 if line: |
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384 yield line |
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385 line = '' |
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386 else: |
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387 if len(line) + len(part) >= maxlinewidth: |
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388 yield line |
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389 line = '' |
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390 elif addspaces and line and part != '.': |
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391 line += ' ' |
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392 line += part |
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393 if line: |
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394 yield line |
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395 |
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396 def dagtext(dag, |
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397 addspaces=True, |
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398 wraplabels=False, |
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399 wrapannotations=False, |
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400 wrapcommands=False, |
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401 wrapnonlinear=False, |
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402 usedots=False, |
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403 maxlinewidth=70): |
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404 '''generates lines of a textual representation for a dag event stream |
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405 |
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406 events should generate what parsedag() does, so: |
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407 |
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408 ('n', (id, [parentids])) for node creation |
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409 ('l', (id, labelname)) for labels on nodes |
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410 ('a', text) for annotations |
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411 ('c', text) for commands |
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412 ('C', text) for line commands ('!!') |
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413 ('#', text) for comment lines |
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414 |
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415 Parent nodes must come before child nodes. |
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416 |
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417 Examples |
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418 -------- |
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419 |
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420 Linear run: |
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421 |
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422 >>> dagtext([(b'n', (0, [-1])), (b'n', (1, [0]))]) |
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423 '+2' |
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424 |
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425 Two roots: |
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426 |
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427 >>> dagtext([(b'n', (0, [-1])), (b'n', (1, [-1]))]) |
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428 '+1 $ +1' |
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429 |
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430 Fork and join: |
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431 |
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432 >>> dagtext([(b'n', (0, [-1])), (b'n', (1, [0])), (b'n', (2, [0])), |
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433 ... (b'n', (3, [2, 1]))]) |
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434 '+2 *2 */2' |
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435 |
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436 Fork and join with labels: |
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437 |
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438 >>> dagtext([(b'n', (0, [-1])), (b'l', (0, b'f')), (b'n', (1, [0])), |
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439 ... (b'l', (1, b'p2')), (b'n', (2, [0])), (b'n', (3, [2, 1]))]) |
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440 '+1 :f +1 :p2 *f */p2' |
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441 |
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442 Annotations: |
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443 |
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444 >>> dagtext([(b'n', (0, [-1])), (b'a', b'ann'), (b'n', (1, [0]))]) |
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445 '+1 @ann +1' |
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446 |
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447 >>> dagtext([(b'n', (0, [-1])), |
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448 ... (b'a', b'my annotation'), |
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449 ... (b'n', (1, [0]))]) |
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450 '+1 @"my annotation" +1' |
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451 |
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452 Commands: |
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453 |
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454 >>> dagtext([(b'n', (0, [-1])), (b'c', b'cmd'), (b'n', (1, [0]))]) |
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455 '+1 !cmd +1' |
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456 |
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457 >>> dagtext([(b'n', (0, [-1])), |
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458 ... (b'c', b'my command'), |
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459 ... (b'n', (1, [0]))]) |
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460 '+1 !"my command" +1' |
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461 |
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462 >>> dagtext([(b'n', (0, [-1])), |
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463 ... (b'C', b'my command line'), |
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464 ... (b'n', (1, [0]))]) |
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465 '+1 !!my command line\\n+1' |
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466 |
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467 Comments: |
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468 |
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doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
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469 >>> dagtext([(b'n', (0, [-1])), (b'#', b' comment'), (b'n', (1, [0]))]) |
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470 '+1 # comment\\n+1' |
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471 |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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472 >>> dagtext([]) |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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473 '' |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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474 |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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475 Combining parsedag and dagtext: |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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476 |
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0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
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477 >>> dagtext(parsedag(b'+1 :f +1 :p2 *f */p2')) |
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478 '+1 :f +1 :p2 *f */p2' |
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479 |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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480 ''' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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481 return "\n".join(dagtextlines(dag, |
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482 addspaces, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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483 wraplabels, |
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dagparser: parses and formats DAGs as concise text
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484 wrapannotations, |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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485 wrapcommands, |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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486 wrapnonlinear, |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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487 usedots, |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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488 maxlinewidth)) |