author | immler@in.tum.de |
Wed, 08 Jul 2009 13:29:43 +0200 | |
changeset 34649 | 70759ca6bb87 |
parent 34648 | 8213a350fd45 |
child 34653 | 2e033aaf128e |
permissions | -rw-r--r-- |
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/* |
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* Document as list of commands, consisting of lists of tokens |
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* |
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* @author Johannes Hölzl, TU Munich |
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* @author Fabian Immler, TU Munich |
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* @author Makarius |
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*/ |
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package isabelle.proofdocument |
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import scala.collection.mutable.ListBuffer |
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import scala.actors.Actor |
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import scala.actors.Actor._ |
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import java.util.regex.Pattern |
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import isabelle.prover.{Prover, Command} |
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import isabelle.utils.LinearSet |
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case class StructureChange( |
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val before_change: Option[Command], |
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val added_commands: List[Command], |
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val removed_commands: List[Command]) |
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object ProofDocument |
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{ |
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// Be careful when changing this regex. Not only must it handle the |
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// spurious end of a token but also: |
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// Bug ID: 5050507 Pattern.matches throws StackOverflow Error |
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// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5050507 |
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val token_pattern = |
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Pattern.compile( |
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"\\{\\*([^*]|\\*[^}]|\\*\\z)*(\\z|\\*\\})|" + |
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"\\(\\*([^*]|\\*[^)]|\\*\\z)*(\\z|\\*\\))|" + |
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"(\\?'?|')[A-Za-z_0-9.]*|" + |
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"[A-Za-z_0-9.]+|" + |
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"[!#$%&*+-/<=>?@^_|~]+|" + |
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"\"([^\\\\\"]?(\\\\(.|\\z))?)*+(\"|\\z)|" + |
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"`([^\\\\`]?(\\\\(.|\\z))?)*+(`|\\z)|" + |
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"[()\\[\\]{}:;]", Pattern.MULTILINE) |
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val empty = |
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new ProofDocument(isabelle.jedit.Isabelle.system.id(), |
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LinearSet(), Map(), LinearSet(), _ => false) |
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} |
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class ProofDocument( |
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val id: String, |
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val tokens: LinearSet[Token], |
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val token_start: Map[Token, Int], |
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val commands: LinearSet[Command], |
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is_command_keyword: String => Boolean) |
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{ |
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def set_command_keyword(f: String => Boolean): ProofDocument = |
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new ProofDocument(id, tokens, token_start, commands, f) |
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def content = Token.string_from_tokens(Nil ++ tokens, token_start) |
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/** token view **/ |
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def text_changed(change: Text.Change): (ProofDocument, StructureChange) = |
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{ |
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//indices of tokens |
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var start: Map[Token, Int] = token_start |
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def stop(t: Token) = start(t) + t.length |
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// split old token lists |
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val tokens = Nil ++ this.tokens |
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val (begin, remaining) = tokens.span(stop(_) < change.start) |
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val (removed, end) = remaining.span(token_start(_) <= change.start + change.removed.length) |
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// update indices |
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start = end.foldLeft(start)((s, t) => |
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s + (t -> (s(t) + change.added.length - change.removed.length))) |
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val split_begin = removed.takeWhile(start(_) < change.start). |
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map (t => { |
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val split_tok = new Token(t.content.substring(0, change.start - start(t)), t.kind) |
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start += (split_tok -> start(t)) |
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split_tok |
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}) |
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val split_end = removed.dropWhile(stop(_) < change.start + change.removed.length). |
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map (t => { |
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val split_tok = |
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new Token(t.content.substring(change.start + change.removed.length - start(t)), t.kind) |
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start += (split_tok -> start(t)) |
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split_tok |
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}) |
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// update indices |
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start = removed.foldLeft (start) ((s, t) => s - t) |
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start = split_end.foldLeft (start) ((s, t) => |
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s + (t -> (change.start + change.added.length))) |
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val ins = new Token(change.added, Token.Kind.OTHER) |
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start += (ins -> change.start) |
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var invalid_tokens = split_begin ::: ins :: split_end ::: end |
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var new_tokens: List[Token] = Nil |
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var old_suffix: List[Token] = Nil |
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val match_start = invalid_tokens.firstOption.map(start(_)).getOrElse(0) |
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val matcher = |
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ProofDocument.token_pattern.matcher(Token.string_from_tokens(invalid_tokens, start)) |
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while (matcher.find() && invalid_tokens != Nil) { |
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val kind = |
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if (is_command_keyword(matcher.group)) |
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Token.Kind.COMMAND_START |
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else if (matcher.end - matcher.start > 2 && matcher.group.substring(0, 2) == "(*") |
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Token.Kind.COMMENT |
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else |
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Token.Kind.OTHER |
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val new_token = new Token(matcher.group, kind) |
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start += (new_token -> (match_start + matcher.start)) |
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new_tokens ::= new_token |
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invalid_tokens = invalid_tokens dropWhile (stop(_) < stop(new_token)) |
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invalid_tokens match { |
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case t :: ts => |
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if (start(t) == start(new_token) && |
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start(t) > change.start + change.added.length) { |
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old_suffix = t :: ts |
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new_tokens = new_tokens.tail |
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invalid_tokens = Nil |
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} |
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case _ => |
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} |
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} |
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val insert = new_tokens.reverse |
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val new_token_list = begin ::: insert ::: old_suffix |
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token_changed(change.id, begin.lastOption, insert, |
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old_suffix.firstOption, new_token_list, start) |
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} |
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/** command view **/ |
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private def token_changed( |
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new_id: String, |
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before_change: Option[Token], |
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inserted_tokens: List[Token], |
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after_change: Option[Token], |
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new_tokens: List[Token], |
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new_token_start: Map[Token, Int]): (ProofDocument, StructureChange) = |
34485 | 144 |
{ |
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val new_tokenset = (LinearSet() ++ new_tokens).asInstanceOf[LinearSet[Token]] |
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val cmd_before_change = before_change match { |
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case None => None |
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148 |
case Some(bc) => |
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val cmd_with_bc = commands.find(_.contains(bc)).get |
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if (cmd_with_bc.tokens.last == bc) { |
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151 |
if (new_tokenset.next(bc).map(_.is_start).getOrElse(true)) |
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152 |
Some(cmd_with_bc) |
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else commands.prev(cmd_with_bc) |
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} |
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else commands.prev(cmd_with_bc) |
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} |
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val cmd_after_change = after_change match { |
159 |
case None => None |
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160 |
case Some(ac) => |
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val cmd_with_ac = commands.find(_.contains(ac)).get |
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162 |
if (ac.is_start) |
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163 |
Some(cmd_with_ac) |
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164 |
else |
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commands.next(cmd_with_ac) |
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166 |
} |
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val removed_commands = commands.dropWhile(Some(_) != cmd_before_change).drop(1). |
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takeWhile(Some(_) != cmd_after_change) |
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// calculate inserted commands |
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def tokens_to_commands(tokens: List[Token]): List[Command]= { |
173 |
tokens match { |
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174 |
case Nil => Nil |
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case t :: ts => |
176 |
val (cmd, rest) = |
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177 |
ts.span(t => t.kind != Token.Kind.COMMAND_START && t.kind != Token.Kind.COMMENT) |
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new Command(t :: cmd, new_token_start) :: tokens_to_commands(rest) |
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34485 | 179 |
} |
180 |
} |
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181 |
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34593 | 182 |
val split_begin = |
183 |
if (before_change.isDefined) { |
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184 |
val changed = |
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185 |
if (cmd_before_change.isDefined) |
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34595 | 186 |
new_tokens.dropWhile(_ != cmd_before_change.get.tokens.last).drop(1) |
34593 | 187 |
else new_tokenset |
188 |
if (changed.exists(_ == before_change.get)) |
|
34597 | 189 |
changed.takeWhile(_ != before_change.get).toList ::: |
190 |
List(before_change.get) |
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34593 | 191 |
else Nil |
192 |
} else Nil |
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193 |
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34593 | 194 |
val split_end = |
195 |
if (after_change.isDefined && cmd_after_change.isDefined) { |
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34595 | 196 |
val unchanged = new_tokens.dropWhile(_ != after_change.get) |
34593 | 197 |
if (unchanged.exists(_ == cmd_after_change.get.tokens.first)) |
198 |
unchanged.takeWhile(_ != cmd_after_change.get.tokens.first).toList |
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199 |
else Nil |
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200 |
} else Nil |
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34597 | 202 |
val rescan_begin = |
203 |
split_begin ::: |
|
204 |
before_change.map(bc => new_tokens.dropWhile(_ != bc).drop(1)).getOrElse(new_tokens) |
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34582 | 205 |
val rescanning_tokens = |
34597 | 206 |
after_change.map(ac => rescan_begin.takeWhile(_ != ac)).getOrElse(rescan_begin) ::: |
207 |
split_end |
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val inserted_commands = tokens_to_commands(rescanning_tokens.toList) |
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val change = new StructureChange(cmd_before_change, inserted_commands, removed_commands.toList) |
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// build new document |
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immler@in.tum.de
parents:
34551
diff
changeset
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212 |
val new_commandset = commands.delete_between(cmd_before_change, cmd_after_change). |
7dc6c231da40
abs. stops, markup nodes depend on doc-version;
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parents:
34551
diff
changeset
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213 |
insert_after(cmd_before_change, inserted_commands) |
7dc6c231da40
abs. stops, markup nodes depend on doc-version;
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parents:
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diff
changeset
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214 |
|
34544
56217d219e27
proofdocument-versions get id from changes
immler@in.tum.de
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diff
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215 |
val doc = |
34582 | 216 |
new ProofDocument(new_id, new_tokenset, new_token_start, |
34649 | 217 |
new_commandset, is_command_keyword) |
34538
20bfcca24658
Prover as actor managing ProofDocument-versions (removed EventBus structural_changes);
immler@in.tum.de
parents:
34532
diff
changeset
|
218 |
return (doc, change) |
34485 | 219 |
} |
34596 | 220 |
|
221 |
val commands_offsets = { |
|
222 |
var last_stop = 0 |
|
223 |
(for (c <- commands) yield { |
|
224 |
val r = c -> (last_stop,c.stop(this)) |
|
225 |
last_stop = c.stop(this) |
|
226 |
r |
|
227 |
}).toArray |
|
228 |
} |
|
229 |
||
230 |
// use a binary search to find commands for a given offset |
|
231 |
def find_command_at(pos: Int): Command = find_command_at(pos, 0, commands_offsets.length) |
|
232 |
private def find_command_at(pos: Int, array_start: Int, array_stop: Int): Command = { |
|
233 |
val middle_index = (array_start + array_stop) / 2 |
|
234 |
if (middle_index >= commands_offsets.length) return null |
|
235 |
val (middle, (start, stop)) = commands_offsets(middle_index) |
|
236 |
// does middle contain pos? |
|
237 |
if (start <= pos && stop > pos) |
|
238 |
middle |
|
239 |
else if (start > pos) |
|
240 |
find_command_at(pos, array_start, middle_index) |
|
241 |
else if (stop <= pos) |
|
242 |
find_command_at(pos, middle_index + 1, array_stop) |
|
243 |
else error("can't be") |
|
244 |
} |
|
245 |
||
34318
c13e168a8ae6
original sources from Johannes Hölzl a48e0c6ab1aea77c52d596f7efc007a543d3d10c with minor modifications of directory layout;
wenzelm
parents:
diff
changeset
|
246 |
} |