author | immler@in.tum.de |
Sun, 02 Nov 2008 14:31:18 +0100 | |
changeset 34348 | abea94120f4b |
parent 34318 | c13e168a8ae6 |
child 34388 | 23b8351ecbbe |
permissions | -rw-r--r-- |
34318
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1 |
package isabelle.prover |
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2 |
|
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3 |
import isabelle.proofdocument.{ ProofDocument, Token, Text } |
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4 |
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5 |
import isabelle.utils.EventSource |
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6 |
|
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7 |
object Document { |
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8 |
class StructureChange(val beforeChange : Command, |
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9 |
val addedCommands : List[Command], |
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10 |
val removedCommands : List[Command]) |
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11 |
} |
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12 |
|
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13 |
class Document(text : Text, prover : Prover) extends ProofDocument[Command](text) |
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14 |
{ |
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15 |
val structuralChanges = new EventSource[Document.StructureChange]() |
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16 |
|
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17 |
def isStartKeyword(s : String) = prover.commandKeywords.contains(s) |
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18 |
|
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19 |
def commands() = new Iterator[Command] { |
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20 |
var current = firstToken |
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21 |
def hasNext() = current != null |
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22 |
def next() = { try {val s = current.command ; current = s.last.next ; s} |
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23 |
catch { case error : NullPointerException => |
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24 |
System.err.println("NPE!") |
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25 |
throw error |
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26 |
} |
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27 |
} |
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28 |
} |
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29 |
|
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30 |
def getContent(cmd : Command) = text.content(cmd.properStart, cmd.properStop) |
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31 |
|
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32 |
def getNextCommandContaining(pos : Int) : Command = { |
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33 |
for( cmd <- commands()) { if (pos < cmd.stop) return cmd } |
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34 |
return null |
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35 |
} |
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36 |
|
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37 |
override def tokenChanged(start : Token[Command], stop : Token[Command], |
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38 |
removed : Token[Command]) { |
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39 |
var removedCommands : List[Command] = Nil |
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40 |
var first : Command = null |
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41 |
var last : Command = null |
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42 |
|
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43 |
for(t <- tokens(removed)) { |
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44 |
if (first == null) |
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45 |
first = t.command |
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46 |
if (t.command != last) |
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47 |
removedCommands = t.command :: removedCommands |
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48 |
last = t.command |
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49 |
} |
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50 |
|
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51 |
var before : Command = null |
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52 |
if (! removedCommands.isEmpty) { |
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53 |
if (first.first == removed) { |
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54 |
if (start == null) |
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55 |
before = null |
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56 |
else |
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57 |
before = start.command |
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58 |
} |
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59 |
else |
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60 |
before = first.previous |
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61 |
} |
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62 |
|
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63 |
var addedCommands : List[Command] = Nil |
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64 |
var scan : Token[Command] = null |
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65 |
if (start != null) { |
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66 |
val next = start.next |
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67 |
if (first != null && first.first != removed) { |
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68 |
scan = first.first |
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69 |
if (before == null) |
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70 |
before = first.previous |
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71 |
} |
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72 |
else if (next != null && next != stop) { |
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73 |
if (next.isCommandStart) { |
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74 |
before = start.command |
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75 |
scan = next |
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76 |
} |
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77 |
else if (first == null || first.first == removed) { |
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78 |
first = start.command |
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79 |
removedCommands = first :: removedCommands |
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80 |
scan = first.first |
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81 |
if (before == null) |
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82 |
before = first.previous |
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83 |
} |
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84 |
else { |
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85 |
scan = first.first |
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86 |
if (before == null) |
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87 |
before = first.previous |
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88 |
} |
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89 |
} |
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90 |
} |
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91 |
else |
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92 |
scan = firstToken |
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93 |
|
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94 |
var stopScan : Token[Command] = null |
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95 |
if (stop != null) { |
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original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
96 |
if (stop == stop.command.first) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
97 |
stopScan = stop |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
98 |
else |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
99 |
stopScan = stop.command.last.next |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
100 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
101 |
else if (last != null) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
102 |
stopScan = last.last.next |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
103 |
else |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
104 |
stopScan = null |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
105 |
|
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
106 |
var cmdStart : Token[Command] = null |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
107 |
var cmdStop : Token[Command] = null |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
108 |
var overrun = false |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
109 |
var finished = false |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
110 |
while (scan != null && !finished) { |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
111 |
if (scan == stopScan) { |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
112 |
if (scan.isCommandStart) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
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changeset
|
113 |
finished = true |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
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parents:
diff
changeset
|
114 |
else |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
115 |
overrun = true |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
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parents:
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changeset
|
116 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
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parents:
diff
changeset
|
117 |
|
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
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parents:
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changeset
|
118 |
if (scan.isCommandStart && cmdStart != null && !finished) { |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
119 |
if (! overrun) { |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
120 |
addedCommands = new Command(cmdStart, cmdStop) :: addedCommands |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
121 |
cmdStart = scan |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
122 |
cmdStop = scan |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
123 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
124 |
else |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
125 |
finished = true |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
126 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
127 |
else if (! finished) { |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
128 |
if (cmdStart == null) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
129 |
cmdStart = scan |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
130 |
cmdStop = scan |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
131 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
132 |
if (overrun && !finished) { |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
133 |
if (scan.command != last) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
134 |
removedCommands = scan.command :: removedCommands |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
135 |
last = scan.command |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
136 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
137 |
|
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
138 |
if (!finished) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
139 |
scan = scan.next |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
140 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
141 |
|
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
142 |
if (cmdStart != null) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
143 |
addedCommands = new Command(cmdStart, cmdStop) :: addedCommands |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
144 |
|
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
145 |
// relink commands |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
146 |
addedCommands = addedCommands.reverse |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
147 |
removedCommands = removedCommands.reverse |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
148 |
|
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
149 |
structuralChanges.fire(new Document.StructureChange(before, addedCommands, |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
150 |
removedCommands)) |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
151 |
} |
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
152 |
} |