Mercurial > hg
annotate mercurial/dagparser.py @ 25764:22049b565d57
localrepo: provide workingctx by integer revision
This allows us to use the integer representation in revset. None doesn't
work well while computing revset because revset heavily depends on and
optimized for integer revisions.
Still repo[wdirrev].rev() is None, which means the canonical form of the
working-directory revision is None.
This patch doesn't add the case for the wdirid because we can't handle short
and ambiguous identifiers here. Perhaps, the wdirid will have to be handled
in the changelog layer.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 16 Aug 2014 13:25:45 +0900 |
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1 # dagparser.py - parser and generator for concise description of DAGs |
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2 # |
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3 # Copyright 2010 Peter Arrenbrecht <peter@arrenbrecht.ch> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 import re, string |
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9 import util |
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10 from i18n import _ |
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11 |
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12 def parsedag(desc): |
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13 '''parses a DAG from a concise textual description; generates events |
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14 |
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15 "+n" is a linear run of n nodes based on the current default parent |
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16 "." is a single node based on the current default parent |
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17 "$" resets the default parent to -1 (implied at the start); |
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18 otherwise the default parent is always the last node created |
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19 "<p" sets the default parent to the backref p |
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20 "*p" is a fork at parent p, where p is a backref |
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21 "*p1/p2/.../pn" is a merge of parents p1..pn, where the pi are backrefs |
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22 "/p2/.../pn" is a merge of the preceding node and p2..pn |
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23 ":name" defines a label for the preceding node; labels can be redefined |
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24 "@text" emits an annotation event for text |
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25 "!command" emits an action event for the current node |
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26 "!!my command\n" is like "!", but to the end of the line |
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27 "#...\n" is a comment up to the end of the line |
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28 |
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29 Whitespace between the above elements is ignored. |
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30 |
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31 A backref is either |
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32 * a number n, which references the node curr-n, where curr is the current |
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33 node, or |
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34 * the name of a label you placed earlier using ":name", or |
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35 * empty to denote the default parent. |
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36 |
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37 All string valued-elements are either strictly alphanumeric, or must |
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38 be enclosed in double quotes ("..."), with "\" as escape character. |
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39 |
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40 Generates sequence of |
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41 |
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42 ('n', (id, [parentids])) for node creation |
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43 ('l', (id, labelname)) for labels on nodes |
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44 ('a', text) for annotations |
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45 ('c', command) for actions (!) |
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46 ('C', command) for line actions (!!) |
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47 |
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48 Examples |
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49 -------- |
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50 |
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51 Example of a complex graph (output not shown for brevity): |
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52 |
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53 >>> len(list(parsedag(""" |
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54 ... |
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55 ... +3 # 3 nodes in linear run |
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56 ... :forkhere # a label for the last of the 3 nodes from above |
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57 ... +5 # 5 more nodes on one branch |
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58 ... :mergethis # label again |
17500 | 59 ... <forkhere # set default parent to labeled fork node |
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60 ... +10 # 10 more nodes on a parallel branch |
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61 ... @stable # following nodes will be annotated as "stable" |
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62 ... +5 # 5 nodes in stable |
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63 ... !addfile # custom command; could trigger new file in next node |
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64 ... +2 # two more nodes |
17500 | 65 ... /mergethis # merge last node with labeled node |
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66 ... +4 # 4 more nodes descending from merge node |
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67 ... |
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68 ... """))) |
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69 34 |
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70 |
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71 Empty list: |
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72 |
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73 >>> list(parsedag("")) |
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74 [] |
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75 |
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76 A simple linear run: |
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77 |
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78 >>> list(parsedag("+3")) |
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79 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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80 |
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81 Some non-standard ways to define such runs: |
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82 |
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83 >>> list(parsedag("+1+2")) |
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84 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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85 |
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86 >>> list(parsedag("+1*1*")) |
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87 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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88 |
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89 >>> list(parsedag("*")) |
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90 [('n', (0, [-1]))] |
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91 |
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92 >>> list(parsedag("...")) |
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93 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [1]))] |
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94 |
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95 A fork and a join, using numeric back references: |
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96 |
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97 >>> list(parsedag("+2*2*/2")) |
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98 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [0])), ('n', (3, [2, 1]))] |
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99 |
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100 >>> list(parsedag("+2<2+1/2")) |
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101 [('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [0])), ('n', (3, [2, 1]))] |
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102 |
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103 Placing a label: |
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104 |
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105 >>> list(parsedag("+1 :mylabel +1")) |
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106 [('n', (0, [-1])), ('l', (0, 'mylabel')), ('n', (1, [0]))] |
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107 |
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108 An empty label (silly, really): |
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109 |
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110 >>> list(parsedag("+1:+1")) |
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111 [('n', (0, [-1])), ('l', (0, '')), ('n', (1, [0]))] |
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112 |
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113 Fork and join, but with labels instead of numeric back references: |
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114 |
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115 >>> list(parsedag("+1:f +1:p2 *f */p2")) |
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116 [('n', (0, [-1])), ('l', (0, 'f')), ('n', (1, [0])), ('l', (1, 'p2')), |
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117 ('n', (2, [0])), ('n', (3, [2, 1]))] |
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118 |
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119 >>> list(parsedag("+1:f +1:p2 <f +1 /p2")) |
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120 [('n', (0, [-1])), ('l', (0, 'f')), ('n', (1, [0])), ('l', (1, 'p2')), |
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121 ('n', (2, [0])), ('n', (3, [2, 1]))] |
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122 |
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123 Restarting from the root: |
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124 |
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125 >>> list(parsedag("+1 $ +1")) |
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126 [('n', (0, [-1])), ('n', (1, [-1]))] |
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127 |
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128 Annotations, which are meant to introduce sticky state for subsequent nodes: |
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129 |
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130 >>> list(parsedag("+1 @ann +1")) |
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131 [('n', (0, [-1])), ('a', 'ann'), ('n', (1, [0]))] |
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132 |
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133 >>> list(parsedag('+1 @"my annotation" +1')) |
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134 [('n', (0, [-1])), ('a', 'my annotation'), ('n', (1, [0]))] |
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135 |
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136 Commands, which are meant to operate on the most recently created node: |
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137 |
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138 >>> list(parsedag("+1 !cmd +1")) |
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139 [('n', (0, [-1])), ('c', 'cmd'), ('n', (1, [0]))] |
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140 |
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141 >>> list(parsedag('+1 !"my command" +1')) |
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142 [('n', (0, [-1])), ('c', 'my command'), ('n', (1, [0]))] |
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143 |
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144 >>> list(parsedag('+1 !!my command line\\n +1')) |
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145 [('n', (0, [-1])), ('C', 'my command line'), ('n', (1, [0]))] |
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146 |
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147 Comments, which extend to the end of the line: |
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148 |
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149 >>> list(parsedag('+1 # comment\\n+1')) |
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150 [('n', (0, [-1])), ('n', (1, [0]))] |
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151 |
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152 Error: |
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153 |
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154 >>> try: list(parsedag('+1 bad')) |
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155 ... except Exception, e: print e |
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156 invalid character in dag description: bad... |
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157 |
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158 ''' |
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159 if not desc: |
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160 return |
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161 |
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162 wordchars = string.ascii_letters + string.digits |
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163 |
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164 labels = {} |
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165 p1 = -1 |
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166 r = 0 |
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167 |
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168 def resolve(ref): |
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169 if not ref: |
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170 return p1 |
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171 elif ref[0] in string.digits: |
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172 return r - int(ref) |
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173 else: |
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174 return labels[ref] |
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175 |
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176 chiter = (c for c in desc) |
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177 |
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178 def nextch(): |
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179 return next(chiter, '\0') |
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180 |
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181 def nextrun(c, allow): |
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182 s = '' |
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183 while c in allow: |
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184 s += c |
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185 c = nextch() |
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186 return c, s |
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187 |
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188 def nextdelimited(c, limit, escape): |
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189 s = '' |
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190 while c != limit: |
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191 if c == escape: |
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192 c = nextch() |
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193 s += c |
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194 c = nextch() |
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195 return nextch(), s |
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196 |
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197 def nextstring(c): |
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198 if c == '"': |
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199 return nextdelimited(nextch(), '"', '\\') |
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200 else: |
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201 return nextrun(c, wordchars) |
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202 |
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203 c = nextch() |
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204 while c != '\0': |
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205 while c in string.whitespace: |
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206 c = nextch() |
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207 if c == '.': |
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208 yield 'n', (r, [p1]) |
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209 p1 = r |
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210 r += 1 |
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211 c = nextch() |
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212 elif c == '+': |
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213 c, digs = nextrun(nextch(), string.digits) |
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214 n = int(digs) |
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215 for i in xrange(0, n): |
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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 elif c in '*/': |
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220 if c == '*': |
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221 c = nextch() |
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222 c, pref = nextstring(c) |
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223 prefs = [pref] |
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224 while c == '/': |
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225 c, pref = nextstring(nextch()) |
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226 prefs.append(pref) |
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227 ps = [resolve(ref) for ref in prefs] |
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228 yield 'n', (r, ps) |
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229 p1 = r |
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230 r += 1 |
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231 elif c == '<': |
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232 c, ref = nextstring(nextch()) |
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233 p1 = resolve(ref) |
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234 elif c == ':': |
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235 c, name = nextstring(nextch()) |
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236 labels[name] = p1 |
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237 yield 'l', (p1, name) |
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238 elif c == '@': |
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239 c, text = nextstring(nextch()) |
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240 yield 'a', text |
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241 elif c == '!': |
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242 c = nextch() |
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243 if c == '!': |
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244 cmd = '' |
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245 c = nextch() |
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246 while c not in '\n\r\0': |
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247 cmd += c |
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248 c = nextch() |
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249 yield 'C', cmd |
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250 else: |
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251 c, cmd = nextstring(c) |
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252 yield 'c', cmd |
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253 elif c == '#': |
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254 while c not in '\n\r\0': |
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255 c = nextch() |
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256 elif c == '$': |
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257 p1 = -1 |
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258 c = nextch() |
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259 elif c == '\0': |
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260 return # in case it was preceded by whitespace |
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261 else: |
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262 s = '' |
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263 i = 0 |
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264 while c != '\0' and i < 10: |
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265 s += c |
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266 i += 1 |
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267 c = nextch() |
16683 | 268 raise util.Abort(_('invalid character in dag description: ' |
269 '%s...') % s) | |
11335
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270 |
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271 def dagtextlines(events, |
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272 addspaces=True, |
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273 wraplabels=False, |
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274 wrapannotations=False, |
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275 wrapcommands=False, |
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276 wrapnonlinear=False, |
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277 usedots=False, |
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278 maxlinewidth=70): |
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279 '''generates single lines for dagtext()''' |
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280 |
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281 def wrapstring(text): |
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282 if re.match("^[0-9a-z]*$", text): |
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283 return text |
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284 return '"' + text.replace('\\', '\\\\').replace('"', '\"') + '"' |
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285 |
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286 def gen(): |
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287 labels = {} |
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288 run = 0 |
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289 wantr = 0 |
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290 needroot = False |
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291 for kind, data in events: |
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292 if kind == 'n': |
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293 r, ps = data |
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294 |
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|
295 # sanity check |
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296 if r != wantr: |
12134
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Martin Geisler <mg@aragost.com>
parents:
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297 raise util.Abort(_("expected id %i, got %i") % (wantr, r)) |
11335
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298 if not ps: |
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299 ps = [-1] |
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300 else: |
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|
301 for p in ps: |
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|
302 if p >= r: |
12134
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Martin Geisler <mg@aragost.com>
parents:
11879
diff
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|
303 raise util.Abort(_("parent id %i is larger than " |
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Martin Geisler <mg@aragost.com>
parents:
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diff
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|
304 "current id %i") % (p, r)) |
11335
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305 wantr += 1 |
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|
306 |
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|
307 # new root? |
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308 p1 = r - 1 |
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309 if len(ps) == 1 and ps[0] == -1: |
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310 if needroot: |
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diff
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|
311 if run: |
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parents:
diff
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|
312 yield '+' + str(run) |
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parents:
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|
313 run = 0 |
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parents:
diff
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|
314 if wrapnonlinear: |
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parents:
diff
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|
315 yield '\n' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
316 yield '$' |
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parents:
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|
317 p1 = -1 |
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318 else: |
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parents:
diff
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|
319 needroot = True |
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320 if len(ps) == 1 and ps[0] == p1: |
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parents:
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|
321 if usedots: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
322 yield "." |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
323 else: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
324 run += 1 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
325 else: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
326 if run: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
327 yield '+' + str(run) |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
328 run = 0 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
329 if wrapnonlinear: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
330 yield '\n' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
331 prefs = [] |
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parents:
diff
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|
332 for p in ps: |
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parents:
diff
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|
333 if p == p1: |
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parents:
diff
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|
334 prefs.append('') |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
335 elif p in labels: |
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parents:
diff
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|
336 prefs.append(labels[p]) |
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parents:
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|
337 else: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
338 prefs.append(str(r - p)) |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
339 yield '*' + '/'.join(prefs) |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
340 else: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
341 if run: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
342 yield '+' + str(run) |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
343 run = 0 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
344 if kind == 'l': |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
345 rid, name = data |
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parents:
diff
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|
346 labels[rid] = name |
3201ff1459dd
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parents:
diff
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|
347 yield ':' + name |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
348 if wraplabels: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
349 yield '\n' |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
350 elif kind == 'c': |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
351 yield '!' + wrapstring(data) |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
352 if wrapcommands: |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
353 yield '\n' |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
354 elif kind == 'C': |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
355 yield '!!' + data |
3201ff1459dd
dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
356 yield '\n' |
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357 elif kind == 'a': |
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358 if wrapannotations: |
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359 yield '\n' |
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360 yield '@' + wrapstring(data) |
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361 elif kind == '#': |
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362 yield '#' + data |
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363 yield '\n' |
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364 else: |
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365 raise util.Abort(_("invalid event type in dag: %s") |
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366 % str((type, data))) |
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367 if run: |
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368 yield '+' + str(run) |
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369 |
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370 line = '' |
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371 for part in gen(): |
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372 if part == '\n': |
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373 if line: |
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374 yield line |
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375 line = '' |
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376 else: |
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377 if len(line) + len(part) >= maxlinewidth: |
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378 yield line |
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379 line = '' |
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380 elif addspaces and line and part != '.': |
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381 line += ' ' |
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382 line += part |
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383 if line: |
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384 yield line |
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385 |
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386 def dagtext(dag, |
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387 addspaces=True, |
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388 wraplabels=False, |
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389 wrapannotations=False, |
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390 wrapcommands=False, |
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391 wrapnonlinear=False, |
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392 usedots=False, |
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393 maxlinewidth=70): |
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394 '''generates lines of a textual representation for a dag event stream |
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395 |
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396 events should generate what parsedag() does, so: |
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397 |
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398 ('n', (id, [parentids])) for node creation |
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399 ('l', (id, labelname)) for labels on nodes |
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400 ('a', text) for annotations |
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401 ('c', text) for commands |
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402 ('C', text) for line commands ('!!') |
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403 ('#', text) for comment lines |
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|
404 |
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405 Parent nodes must come before child nodes. |
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406 |
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407 Examples |
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408 -------- |
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409 |
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410 Linear run: |
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411 |
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412 >>> dagtext([('n', (0, [-1])), ('n', (1, [0]))]) |
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413 '+2' |
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414 |
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parents:
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415 Two roots: |
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416 |
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417 >>> dagtext([('n', (0, [-1])), ('n', (1, [-1]))]) |
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418 '+1 $ +1' |
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419 |
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420 Fork and join: |
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421 |
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parents:
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422 >>> dagtext([('n', (0, [-1])), ('n', (1, [0])), ('n', (2, [0])), |
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423 ... ('n', (3, [2, 1]))]) |
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424 '+2 *2 */2' |
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425 |
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426 Fork and join with labels: |
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427 |
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428 >>> dagtext([('n', (0, [-1])), ('l', (0, 'f')), ('n', (1, [0])), |
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429 ... ('l', (1, 'p2')), ('n', (2, [0])), ('n', (3, [2, 1]))]) |
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430 '+1 :f +1 :p2 *f */p2' |
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431 |
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parents:
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|
432 Annotations: |
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parents:
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|
433 |
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parents:
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|
434 >>> dagtext([('n', (0, [-1])), ('a', 'ann'), ('n', (1, [0]))]) |
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parents:
diff
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|
435 '+1 @ann +1' |
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parents:
diff
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|
436 |
16683 | 437 >>> dagtext([('n', (0, [-1])), |
438 ... ('a', 'my annotation'), | |
439 ... ('n', (1, [0]))]) | |
11335
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parents:
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|
440 '+1 @"my annotation" +1' |
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parents:
diff
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|
441 |
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parents:
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|
442 Commands: |
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parents:
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|
443 |
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parents:
diff
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|
444 >>> dagtext([('n', (0, [-1])), ('c', 'cmd'), ('n', (1, [0]))]) |
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parents:
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|
445 '+1 !cmd +1' |
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parents:
diff
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|
446 |
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parents:
diff
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|
447 >>> dagtext([('n', (0, [-1])), ('c', 'my command'), ('n', (1, [0]))]) |
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parents:
diff
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|
448 '+1 !"my command" +1' |
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parents:
diff
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|
449 |
16683 | 450 >>> dagtext([('n', (0, [-1])), |
451 ... ('C', 'my command line'), | |
452 ... ('n', (1, [0]))]) | |
11335
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parents:
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|
453 '+1 !!my command line\\n+1' |
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parents:
diff
changeset
|
454 |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
455 Comments: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
456 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
457 >>> dagtext([('n', (0, [-1])), ('#', ' comment'), ('n', (1, [0]))]) |
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parents:
diff
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|
458 '+1 # comment\\n+1' |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
459 |
3201ff1459dd
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
460 >>> dagtext([]) |
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parents:
diff
changeset
|
461 '' |
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parents:
diff
changeset
|
462 |
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parents:
diff
changeset
|
463 Combining parsedag and dagtext: |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
464 |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
465 >>> dagtext(parsedag('+1 :f +1 :p2 *f */p2')) |
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parents:
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|
466 '+1 :f +1 :p2 *f */p2' |
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parents:
diff
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|
467 |
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parents:
diff
changeset
|
468 ''' |
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parents:
diff
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|
469 return "\n".join(dagtextlines(dag, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
470 addspaces, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
471 wraplabels, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
472 wrapannotations, |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
473 wrapcommands, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
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|
474 wrapnonlinear, |
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
475 usedots, |
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dagparser: parses and formats DAGs as concise text
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff
changeset
|
476 maxlinewidth)) |