Mercurial > hg
annotate mercurial/dagparser.py @ 36160:9fd8c2a3db5a
narrowspec: move module into core
Having support for parsing the narrow specification in core is
necessary for moving many other parts of narrow to core.
We do still want to harmonize the narrow spec with the sparse
spec. And the format needs to be documented. But this shouldn't
hold up the code moving to core.
Differential Revision: https://phab.mercurial-scm.org/D2201
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 12 Feb 2018 16:21:34 -0800 |
parents | dfd009e5f9f2 |
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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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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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228 if c == '*': |
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229 c = nextch() |
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230 c, pref = nextstring(c) |
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parents:
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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:
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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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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 |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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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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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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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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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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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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parents:
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263 c = nextch() |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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264 elif c == '$': |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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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:
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270 s = '' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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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:
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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:
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281 wraplabels=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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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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parents:
diff
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|
284 wrapnonlinear=False, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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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 |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
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 |
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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
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|
302 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
303 # sanity check |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
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
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|
306 if not ps: |
3201ff1459dd
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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
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349 if run: |
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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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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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472 >>> dagtext([]) |
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473 '' |
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474 |
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475 Combining parsedag and dagtext: |
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476 |
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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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480 ''' |
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481 return "\n".join(dagtextlines(dag, |
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482 addspaces, |
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483 wraplabels, |
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484 wrapannotations, |
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485 wrapcommands, |
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486 wrapnonlinear, |
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487 usedots, |
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488 maxlinewidth)) |