Mercurial > hg
annotate mercurial/dagparser.py @ 51461:47752632b4fc
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We are about to have more similar function, we rename the existing one to a more
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author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 26 Feb 2024 15:12:20 +0100 |
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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 |
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9 import re |
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10 import string |
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11 |
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12 from .i18n import _ |
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13 from . import ( |
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14 error, |
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15 pycompat, |
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16 ) |
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17 from .utils import stringutil |
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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 |
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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 |
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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 # pytype: disable=wrong-arg-types |
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171 wordchars = pycompat.bytestr(string.ascii_letters + string.digits) |
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172 # pytype: enable=wrong-arg-types |
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173 |
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174 labels = {} |
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175 p1 = -1 |
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176 r = 0 |
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177 |
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178 def resolve(ref): |
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179 if not ref: |
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180 return p1 |
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181 # pytype: disable=wrong-arg-types |
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182 elif ref[0] in pycompat.bytestr(string.digits): |
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183 # pytype: enable=wrong-arg-types |
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184 return r - int(ref) |
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185 else: |
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186 return labels[ref] |
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187 |
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188 chiter = pycompat.iterbytestr(desc) |
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189 |
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190 def nextch(): |
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191 return next(chiter, b'\0') |
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192 |
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193 def nextrun(c, allow): |
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194 s = b'' |
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195 while c in allow: |
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196 s += c |
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197 c = nextch() |
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198 return c, s |
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199 |
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200 def nextdelimited(c, limit, escape): |
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201 s = b'' |
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202 while c != limit: |
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203 if c == escape: |
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204 c = nextch() |
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205 s += c |
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206 c = nextch() |
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207 return nextch(), s |
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208 |
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209 def nextstring(c): |
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210 if c == b'"': |
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211 return nextdelimited(nextch(), b'"', b'\\') |
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212 else: |
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213 return nextrun(c, wordchars) |
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214 |
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215 c = nextch() |
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216 while c != b'\0': |
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217 # pytype: disable=wrong-arg-types |
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218 while c in pycompat.bytestr(string.whitespace): |
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219 # pytype: enable=wrong-arg-types |
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220 c = nextch() |
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221 if c == b'.': |
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222 yield b'n', (r, [p1]) |
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223 p1 = r |
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224 r += 1 |
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225 c = nextch() |
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226 elif c == b'+': |
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227 # pytype: disable=wrong-arg-types |
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228 c, digs = nextrun(nextch(), pycompat.bytestr(string.digits)) |
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229 # pytype: enable=wrong-arg-types |
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230 n = int(digs) |
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231 for i in range(0, n): |
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232 yield b'n', (r, [p1]) |
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233 p1 = r |
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234 r += 1 |
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235 elif c in b'*/': |
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236 if c == b'*': |
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237 c = nextch() |
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238 c, pref = nextstring(c) |
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239 prefs = [pref] |
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240 while c == b'/': |
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241 c, pref = nextstring(nextch()) |
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242 prefs.append(pref) |
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243 ps = [resolve(ref) for ref in prefs] |
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244 yield b'n', (r, ps) |
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245 p1 = r |
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246 r += 1 |
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247 elif c == b'<': |
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248 c, ref = nextstring(nextch()) |
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249 p1 = resolve(ref) |
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250 elif c == b':': |
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251 c, name = nextstring(nextch()) |
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252 labels[name] = p1 |
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253 yield b'l', (p1, name) |
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254 elif c == b'@': |
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255 c, text = nextstring(nextch()) |
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256 yield b'a', text |
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257 elif c == b'!': |
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258 c = nextch() |
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259 if c == b'!': |
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260 cmd = b'' |
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261 c = nextch() |
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262 while c not in b'\n\r\0': |
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263 cmd += c |
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264 c = nextch() |
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265 yield b'C', cmd |
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266 else: |
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267 c, cmd = nextstring(c) |
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268 yield b'c', cmd |
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269 elif c == b'#': |
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270 while c not in b'\n\r\0': |
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271 c = nextch() |
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272 elif c == b'$': |
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273 p1 = -1 |
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274 c = nextch() |
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275 elif c == b'\0': |
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276 return # in case it was preceded by whitespace |
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277 else: |
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278 s = b'' |
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279 i = 0 |
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280 while c != b'\0' and i < 10: |
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281 s += c |
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282 i += 1 |
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283 c = nextch() |
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284 raise error.Abort( |
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285 _(b'invalid character in dag description: %s...') % s |
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286 ) |
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287 |
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288 |
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289 def dagtextlines( |
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290 events, |
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291 addspaces=True, |
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292 wraplabels=False, |
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293 wrapannotations=False, |
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294 wrapcommands=False, |
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295 wrapnonlinear=False, |
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296 usedots=False, |
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297 maxlinewidth=70, |
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298 ): |
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299 '''generates single lines for dagtext()''' |
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300 |
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301 def wrapstring(text): |
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302 if re.match(b"^[0-9a-z]*$", text): |
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303 return text |
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304 return b'"' + text.replace(b'\\', b'\\\\').replace(b'"', b'\"') + b'"' |
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305 |
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306 def gen(): |
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307 labels = {} |
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308 run = 0 |
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309 wantr = 0 |
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310 needroot = False |
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311 for kind, data in events: |
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312 if kind == b'n': |
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313 r, ps = data |
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314 |
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315 # sanity check |
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316 if r != wantr: |
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317 raise error.Abort(_(b"expected id %i, got %i") % (wantr, r)) |
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318 if not ps: |
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319 ps = [-1] |
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320 else: |
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321 for p in ps: |
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322 if p >= r: |
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323 raise error.Abort( |
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324 _( |
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325 b"parent id %i is larger than " |
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326 b"current id %i" |
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327 ) |
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328 % (p, r) |
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329 ) |
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330 wantr += 1 |
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331 |
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332 # new root? |
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333 p1 = r - 1 |
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334 if len(ps) == 1 and ps[0] == -1: |
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335 if needroot: |
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336 if run: |
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337 yield b'+%d' % run |
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338 run = 0 |
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339 if wrapnonlinear: |
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340 yield b'\n' |
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341 yield b'$' |
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342 p1 = -1 |
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343 else: |
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344 needroot = True |
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parents:
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345 if len(ps) == 1 and ps[0] == p1: |
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346 if usedots: |
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347 yield b"." |
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348 else: |
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349 run += 1 |
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350 else: |
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351 if run: |
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352 yield b'+%d' % run |
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353 run = 0 |
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354 if wrapnonlinear: |
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355 yield b'\n' |
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356 prefs = [] |
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357 for p in ps: |
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358 if p == p1: |
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359 prefs.append(b'') |
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360 elif p in labels: |
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361 prefs.append(labels[p]) |
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362 else: |
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363 prefs.append(b'%d' % (r - p)) |
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364 yield b'*' + b'/'.join(prefs) |
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365 else: |
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parents:
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366 if run: |
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367 yield b'+%d' % run |
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368 run = 0 |
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369 if kind == b'l': |
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370 rid, name = data |
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parents:
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371 labels[rid] = name |
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372 yield b':' + name |
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373 if wraplabels: |
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374 yield b'\n' |
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375 elif kind == b'c': |
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376 yield b'!' + wrapstring(data) |
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parents:
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377 if wrapcommands: |
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378 yield b'\n' |
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379 elif kind == b'C': |
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380 yield b'!!' + data |
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381 yield b'\n' |
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parents:
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382 elif kind == b'a': |
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parents:
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383 if wrapannotations: |
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parents:
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|
384 yield b'\n' |
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formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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|
385 yield b'@' + wrapstring(data) |
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formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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386 elif kind == b'#': |
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parents:
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387 yield b'#' + data |
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parents:
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388 yield b'\n' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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389 else: |
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Augie Fackler <augie@google.com>
parents:
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|
390 raise error.Abort( |
43117
8ff1ecfadcd1
cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents:
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391 _(b"invalid event type in dag: ('%s', '%s')") |
43076
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parents:
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|
392 % ( |
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parents:
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393 stringutil.escapestr(kind), |
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parents:
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|
394 stringutil.escapestr(data), |
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parents:
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|
395 ) |
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|
396 ) |
11335
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parents:
diff
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|
397 if run: |
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parents:
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398 yield b'+%d' % run |
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parents:
diff
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|
399 |
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parents:
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400 line = b'' |
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parents:
diff
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|
401 for part in gen(): |
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parents:
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402 if part == b'\n': |
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parents:
diff
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|
403 if line: |
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parents:
diff
changeset
|
404 yield line |
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Augie Fackler <augie@google.com>
parents:
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diff
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405 line = b'' |
11335
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parents:
diff
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|
406 else: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
407 if len(line) + len(part) >= maxlinewidth: |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
408 yield line |
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Augie Fackler <augie@google.com>
parents:
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|
409 line = b'' |
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parents:
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|
410 elif addspaces and line and part != b'.': |
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parents:
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411 line += b' ' |
11335
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parents:
diff
changeset
|
412 line += part |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
413 if line: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
414 yield line |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
415 |
43076
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formatting: blacken the codebase
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parents:
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|
416 |
2372284d9457
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parents:
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|
417 def dagtext( |
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|
418 dag, |
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parents:
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|
419 addspaces=True, |
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parents:
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|
420 wraplabels=False, |
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parents:
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diff
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|
421 wrapannotations=False, |
2372284d9457
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parents:
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diff
changeset
|
422 wrapcommands=False, |
2372284d9457
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
423 wrapnonlinear=False, |
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Augie Fackler <augie@google.com>
parents:
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diff
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|
424 usedots=False, |
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parents:
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diff
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|
425 maxlinewidth=70, |
2372284d9457
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
426 ): |
45942
89a2afe31e82
formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents:
43497
diff
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|
427 """generates lines of a textual representation for a dag event stream |
11335
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
428 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
429 events should generate what parsedag() does, so: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
430 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
431 ('n', (id, [parentids])) for node creation |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
432 ('l', (id, labelname)) for labels on nodes |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
433 ('a', text) for annotations |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
434 ('c', text) for commands |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
435 ('C', text) for line commands ('!!') |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
436 ('#', text) for comment lines |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
437 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
438 Parent nodes must come before child nodes. |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
439 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
440 Examples |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
441 -------- |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
442 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
443 Linear run: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
444 |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33716
diff
changeset
|
445 >>> dagtext([(b'n', (0, [-1])), (b'n', (1, [0]))]) |
11335
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
446 '+2' |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
447 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
448 Two roots: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
449 |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33716
diff
changeset
|
450 >>> dagtext([(b'n', (0, [-1])), (b'n', (1, [-1]))]) |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
451 '+1 $ +1' |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
452 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
453 Fork and join: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
454 |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33716
diff
changeset
|
455 >>> dagtext([(b'n', (0, [-1])), (b'n', (1, [0])), (b'n', (2, [0])), |
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33716
diff
changeset
|
456 ... (b'n', (3, [2, 1]))]) |
11335
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
457 '+2 *2 */2' |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
458 |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
459 Fork and join with labels: |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
460 |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33716
diff
changeset
|
461 >>> dagtext([(b'n', (0, [-1])), (b'l', (0, b'f')), (b'n', (1, [0])), |
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33716
diff
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462 ... (b'l', (1, b'p2')), (b'n', (2, [0])), (b'n', (3, [2, 1]))]) |
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463 '+1 :f +1 :p2 *f */p2' |
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464 |
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465 Annotations: |
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466 |
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467 >>> dagtext([(b'n', (0, [-1])), (b'a', b'ann'), (b'n', (1, [0]))]) |
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468 '+1 @ann +1' |
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469 |
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470 >>> dagtext([(b'n', (0, [-1])), |
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471 ... (b'a', b'my annotation'), |
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472 ... (b'n', (1, [0]))]) |
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473 '+1 @"my annotation" +1' |
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474 |
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475 Commands: |
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476 |
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477 >>> dagtext([(b'n', (0, [-1])), (b'c', b'cmd'), (b'n', (1, [0]))]) |
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478 '+1 !cmd +1' |
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479 |
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480 >>> dagtext([(b'n', (0, [-1])), |
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481 ... (b'c', b'my command'), |
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482 ... (b'n', (1, [0]))]) |
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483 '+1 !"my command" +1' |
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484 |
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485 >>> dagtext([(b'n', (0, [-1])), |
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486 ... (b'C', b'my command line'), |
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487 ... (b'n', (1, [0]))]) |
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488 '+1 !!my command line\\n+1' |
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489 |
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490 Comments: |
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491 |
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492 >>> dagtext([(b'n', (0, [-1])), (b'#', b' comment'), (b'n', (1, [0]))]) |
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493 '+1 # comment\\n+1' |
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494 |
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495 >>> dagtext([]) |
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496 '' |
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497 |
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498 Combining parsedag and dagtext: |
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499 |
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500 >>> dagtext(parsedag(b'+1 :f +1 :p2 *f */p2')) |
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501 '+1 :f +1 :p2 *f */p2' |
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502 |
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503 """ |
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504 return b"\n".join( |
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505 dagtextlines( |
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506 dag, |
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507 addspaces, |
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508 wraplabels, |
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509 wrapannotations, |
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510 wrapcommands, |
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511 wrapnonlinear, |
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512 usedots, |
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513 maxlinewidth, |
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514 ) |
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515 ) |