author | wenzelm |
Thu, 27 Sep 2012 19:34:31 +0200 | |
changeset 49614 | 0009a6ebc83b |
parent 49608 | ce1c34c98eeb |
child 49650 | 9fad6480300d |
permissions | -rw-r--r-- |
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/* Title: Pure/PIDE/markup_tree.scala |
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Module: PIDE |
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Author: Fabian Immler, TU Munich |
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Author: Makarius |
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Markup trees over nested / non-overlapping text ranges. |
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*/ |
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package isabelle |
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import java.lang.System |
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import javax.swing.tree.DefaultMutableTreeNode |
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import scala.collection.immutable.SortedMap |
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import scala.collection.mutable |
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import scala.annotation.tailrec |
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object Markup_Tree |
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{ |
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val empty: Markup_Tree = new Markup_Tree(Branches.empty) |
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def merge_disjoint(trees: List[Markup_Tree]): Markup_Tree = |
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trees match { |
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case Nil => empty |
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case head :: tail => |
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new Markup_Tree( |
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(head.branches /: tail) { |
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case (branches, tree) => |
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(branches /: tree.branches) { |
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case (bs, (r, entry)) => |
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require(!bs.isDefinedAt(r)) |
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bs + (r -> entry) |
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} |
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}) |
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} |
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object Entry |
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{ |
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def apply(markup: Text.Markup, subtree: Markup_Tree): Entry = |
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Entry(markup.range, List(markup.info), Set(markup.info.markup.name), subtree) |
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def apply(range: Text.Range, rev_markups: List[XML.Elem], subtree: Markup_Tree): Entry = |
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Entry(range, rev_markups, Set.empty ++ rev_markups.iterator.map(_.markup.name), subtree) |
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} |
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sealed case class Entry( |
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range: Text.Range, |
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rev_markup: List[XML.Elem], |
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elements: Set[String], |
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subtree: Markup_Tree) |
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{ |
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def + (info: XML.Elem): Entry = |
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if (elements(info.markup.name)) copy(rev_markup = info :: rev_markup) |
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else copy(rev_markup = info :: rev_markup, elements = elements + info.markup.name) |
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def markup: List[XML.Elem] = rev_markup.reverse |
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} |
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object Branches |
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{ |
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type T = SortedMap[Text.Range, Entry] |
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val empty: T = SortedMap.empty(Text.Range.Ordering) |
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} |
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/* XML representation */ |
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// FIXME decode markup body |
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@tailrec private def strip_elems(markups: List[Markup], body: XML.Body): (List[Markup], XML.Body) = |
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body match { |
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case List(XML.Elem(markup1, body1)) => strip_elems(markup1 :: markups, body1) |
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case _ => (markups, body) |
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} |
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private def make_trees(acc: (Int, List[Markup_Tree]), tree: XML.Tree): (Int, List[Markup_Tree]) = |
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{ |
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val (offset, markup_trees) = acc |
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strip_elems(Nil, List(tree)) match { |
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case (Nil, body) => |
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(offset + XML.text_length(body), markup_trees) |
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case (elems, body) => |
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val (end_offset, subtrees) = ((offset, Nil: List[Markup_Tree]) /: body)(make_trees) |
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val range = Text.Range(offset, end_offset) |
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val entry = Entry(range, elems.map(XML.Elem(_, Nil)), merge_disjoint(subtrees)) |
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(end_offset, new Markup_Tree(Branches.empty, entry) :: markup_trees) |
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} |
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} |
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def from_XML(body: XML.Body): Markup_Tree = |
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merge_disjoint(((0, Nil: List[Markup_Tree]) /: body)(make_trees)._2) |
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} |
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final class Markup_Tree private(private val branches: Markup_Tree.Branches.T) |
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{ |
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import Markup_Tree._ |
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private def this(branches: Markup_Tree.Branches.T, entry: Markup_Tree.Entry) = |
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this(branches + (entry.range -> entry)) |
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override def toString = |
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branches.toList.map(_._2) match { |
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case Nil => "Empty" |
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case list => list.mkString("Tree(", ",", ")") |
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} |
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private def overlapping(range: Text.Range): Branches.T = |
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{ |
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val start = Text.Range(range.start) |
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val stop = Text.Range(range.stop) |
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val bs = branches.range(start, stop) |
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branches.get(stop) match { |
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case Some(end) if range overlaps end.range => bs + (end.range -> end) |
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case _ => bs |
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} |
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} |
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def + (new_markup: Text.Markup): Markup_Tree = |
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{ |
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val new_range = new_markup.range |
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branches.get(new_range) match { |
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case None => new Markup_Tree(branches, Entry(new_markup, empty)) |
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case Some(entry) => |
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if (entry.range == new_range) |
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new Markup_Tree(branches, entry + new_markup.info) |
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else if (entry.range.contains(new_range)) |
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new Markup_Tree(branches, entry.copy(subtree = entry.subtree + new_markup)) |
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else if (new_range.contains(branches.head._1) && new_range.contains(branches.last._1)) |
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new Markup_Tree(Branches.empty, Entry(new_markup, this)) |
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else { |
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val body = overlapping(new_range) |
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if (body.forall(e => new_range.contains(e._1))) |
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new Markup_Tree(branches -- body.keys, Entry(new_markup, new Markup_Tree(body))) |
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else { |
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java.lang.System.err.println("Ignored overlapping markup information: " + new_markup + |
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body.filter(e => !new_range.contains(e._1)).mkString("\n")) |
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this |
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} |
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} |
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} |
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} |
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def to_XML(root_range: Text.Range, text: CharSequence, filter: XML.Elem => Boolean): XML.Body = |
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{ |
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def make_text(start: Text.Offset, stop: Text.Offset): XML.Body = |
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if (start == stop) Nil |
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else List(XML.Text(text.subSequence(start, stop).toString)) |
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def make_elems(rev_markups: List[XML.Elem], body: XML.Body): XML.Body = |
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(body /: rev_markups) { |
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case (b, elem) => // FIXME encode markup body |
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if (filter(elem)) List(XML.Elem(elem.markup, b)) else b |
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} |
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def make_body(elem_range: Text.Range, elem_markup: List[XML.Elem], entries: Branches.T) |
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: XML.Body = |
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{ |
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val body = new mutable.ListBuffer[XML.Tree] |
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var last = elem_range.start |
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for ((range, entry) <- entries) { |
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val subrange = range.restrict(elem_range) |
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body ++= make_text(last, subrange.start) |
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body ++= make_body(subrange, entry.rev_markup, entry.subtree.overlapping(subrange)) |
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last = subrange.stop |
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} |
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body ++= make_text(last, elem_range.stop) |
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make_elems(elem_markup, body.toList) |
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} |
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make_body(root_range, Nil, overlapping(root_range)) |
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} |
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def to_XML(text: CharSequence): XML.Body = |
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to_XML(Text.Range(0, text.length), text, (_: XML.Elem) => true) |
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def cumulate[A](root_range: Text.Range, root_info: A, result_elements: Option[Set[String]], |
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result: PartialFunction[(A, Text.Markup), A]): Stream[Text.Info[A]] = |
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{ |
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def results(x: A, entry: Entry): Option[A] = |
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if (result_elements match { case Some(es) => es.exists(entry.elements) case None => true }) { |
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val (y, changed) = |
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((x, false) /: entry.rev_markup)((res, info) => // FIXME proper order!? |
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{ |
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val (y, changed) = res |
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val arg = (y, Text.Info(entry.range, info)) |
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if (result.isDefinedAt(arg)) (result(arg), true) |
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else res |
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}) |
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if (changed) Some(y) else None |
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} |
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else None |
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def stream( |
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last: Text.Offset, |
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stack: List[(Text.Info[A], Stream[(Text.Range, Entry)])]): Stream[Text.Info[A]] = |
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{ |
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stack match { |
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case (parent, (range, entry) #:: more) :: rest => |
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val subrange = range.restrict(root_range) |
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val subtree = entry.subtree.overlapping(subrange).toStream |
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val start = subrange.start |
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results(parent.info, entry) match { |
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case Some(res) => |
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val next = Text.Info(subrange, res) |
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val nexts = stream(start, (next, subtree) :: (parent, more) :: rest) |
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if (last < start) parent.restrict(Text.Range(last, start)) #:: nexts |
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else nexts |
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case None => stream(last, (parent, subtree #::: more) :: rest) |
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} |
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case (parent, Stream.Empty) :: rest => |
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val stop = parent.range.stop |
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val nexts = stream(stop, rest) |
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if (last < stop) parent.restrict(Text.Range(last, stop)) #:: nexts |
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else nexts |
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case Nil => |
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val stop = root_range.stop |
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if (last < stop) Stream(Text.Info(Text.Range(last, stop), root_info)) |
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else Stream.empty |
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} |
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} |
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stream(root_range.start, |
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List((Text.Info(root_range, root_info), overlapping(root_range).toStream))) |
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} |
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def swing_tree(parent: DefaultMutableTreeNode, |
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swing_node: Text.Info[List[XML.Elem]] => DefaultMutableTreeNode) |
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{ |
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|
234 |
for ((_, entry) <- branches) { |
47539 | 235 |
val node = swing_node(Text.Info(entry.range, entry.markup)) |
49465 | 236 |
entry.subtree.swing_tree(node, swing_node) |
237 |
parent.add(node) |
|
34514
2104a836b415
renamed fields of MarkupNode; implemented flatten and leafs
immler@in.tum.de
parents:
34503
diff
changeset
|
238 |
} |
2104a836b415
renamed fields of MarkupNode; implemented flatten and leafs
immler@in.tum.de
parents:
34503
diff
changeset
|
239 |
} |
34717
3f32e08bbb6c
sidekick root data: set buffer length to avoid crash of initial caret move;
wenzelm
parents:
34708
diff
changeset
|
240 |
} |
34514
2104a836b415
renamed fields of MarkupNode; implemented flatten and leafs
immler@in.tum.de
parents:
34503
diff
changeset
|
241 |