summaryrefslogtreecommitdiff
path: root/src/compiler/scala/tools/nsc/doc/html/page/Template.scala
blob: 5f4950187e4181955c6d7317eca435c53bc6d13f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
/* NSC -- new Scala compiler
 * Copyright 2007-2011 LAMP/EPFL
 * @author  David Bernard, Manohar Jonnalagedda
 */

package scala.tools.nsc
package doc
package html
package page

import model._
import scala.xml.{ NodeSeq, Text, XML, UnprefixedAttribute }

class Template(tpl: DocTemplateEntity) extends HtmlPage {

  val path =
    templateToPath(tpl)

  val title =
    tpl.qualifiedName

  val headers =
    <xml:group>
      <link href={ relativeLinkTo{List("template.css", "lib")} } media="screen" type="text/css" rel="stylesheet"/>
      <script type="text/javascript" src={ relativeLinkTo{List("jquery.js", "lib")} }></script>
      <script type="text/javascript" src={ relativeLinkTo{List("jquery-ui.js", "lib")} }></script>
      <script type="text/javascript" src={ relativeLinkTo{List("template.js", "lib")} }></script>
      <script type="text/javascript" src={ relativeLinkTo{List("tools.tooltip.js", "lib")} }></script>
    </xml:group>

  val valueMembers =
    tpl.methods.filterNot(_.isBridge) ++ tpl.values ++ tpl.templates.filter(x => x.isObject || x.isPackage) sorted

  val (absValueMembers, nonAbsValueMembers) =
    valueMembers partition (_.isAbstract)

  val (deprValueMembers, concValueMembers) =
    nonAbsValueMembers partition (_.deprecation.isDefined)

  val typeMembers =
    tpl.abstractTypes ++ tpl.aliasTypes ++ tpl.templates.filter(x => x.isTrait || x.isClass) sorted

  val constructors = (tpl match {
    case cls: Class => (cls.constructors: List[MemberEntity]).sorted
    case _ => Nil
  })

  /* for body, there is a special case for AnyRef, otherwise AnyRef appears
   * like a package/object this problem should be fixed, this implementation
   * is just a patch. */
  val body = {
    val templateName = if (tpl.isRootPackage) "root package" else tpl.name
    val displayName = tpl.companion match {
      case Some(companion) if (companion.visibility.isPublic && companion.inSource != None) =>
        <a href={relativeLinkTo(companion)} title="Go to companion">{ templateName }</a>
      case _ =>
        templateName
    }
    val owner = {
      if (tpl.isRootPackage || tpl.inTemplate.isRootPackage)
        NodeSeq.Empty
      else
        <p id="owner">{ templatesToHtml(tpl.inTemplate.toRoot.reverse.tail, xml.Text(".")) }</p>
    }

    val bodyClass = if (tpl.isTrait || tpl.isClass || tpl.qualifiedName == "scala.AnyRef") "type" else "value"

    val icon = tpl.companion match {
      case Some(companion) if (companion.visibility.isPublic && companion.inSource != None) =>
        <a href={relativeLinkTo(companion)} title="Go to companion"><img src={ relativeLinkTo(List(docEntityKindToBigImage(tpl), "lib")) }/></a>
      case _ =>
        <img src={ relativeLinkTo(List(docEntityKindToBigImage(tpl), "lib")) }/>
    }

    val b = <body onload={ "sh_highlightDocument('../lib/', '.min.js');" }>
    </body>

    val order = if (tpl.linearizationTemplates.isEmpty) NodeSeq.Empty else
      <div id="order">
        <span class="filtertype">Ordering</span>
        <ol><li class="alpha in"><span>Alphabetic</span></li><li class="inherit out"><span>By inheritance</span></li></ol>
      </div>

    val ancestors = if (tpl.linearizationTemplates.isEmpty) NodeSeq.Empty else
      <div id="ancestors">
        <span class="filtertype">Inherited</span>
        <ol>
          <li class="hideall out"><span>Hide All</span></li>
          <li class="showall in"><span>Show all</span></li>
        </ol>
        <ol id="linearization">{
          (tpl :: tpl.linearizationTemplates) map { wte =>
            <li class="in" name={ wte.qualifiedName }><span>{
              wte.name
            }</span></li> }
        }</ol>
      </div>

    val constructorsElem = if (constructors.isEmpty) NodeSeq.Empty else
      <div id="constructors" class="members">
        <h3>Instance Constructors</h3>
        <ol>{ constructors map (memberToHtml(_)) }</ol>
      </div>

    val types = if (typeMembers.isEmpty) NodeSeq.Empty else
      <div id="types" class="types members">
        <h3>Type Members</h3>
        <ol>{ typeMembers map (memberToHtml(_)) }</ol>
      </div>

    val abstructValues = if (absValueMembers.isEmpty) NodeSeq.Empty else
      <div id="values" class="values members">
        <h3>Abstract Value Members</h3>
        <ol>{ absValueMembers map (memberToHtml(_)) }</ol>
      </div>

    val concreteValues = if (concValueMembers.isEmpty) NodeSeq.Empty else
      <div id="values" class="values members">
        <h3>{ if (absValueMembers.isEmpty) "Value Members" else "Concrete Value Members" }</h3>
        <ol>{ concValueMembers map (memberToHtml(_)) }</ol>
      </div>

    val deprecatedValues = if (deprValueMembers.isEmpty) NodeSeq.Empty else
      <div id="values" class="values members">
        <h3>Deprecated Value Members</h3>
        <ol>{ deprValueMembers map (memberToHtml(_)) }</ol>
      </div>

    val inheritedMembers = NodeSeq fromSeq (
      for ((superTpl, superType) <- (tpl.linearizationTemplates zip tpl.linearizationTypes)) yield
      <div class="parent" name={ superTpl.qualifiedName }>
        <h3>Inherited from {
          if (tpl.universe.settings.useStupidTypes.value)
            superTpl match {
              case dtpl: DocTemplateEntity =>
                val sig = signature(dtpl, false, true) \ "_"
              sig
              case tpl: TemplateEntity =>
                tpl.name
            }
          else
            typeToHtml(superType, true)
        }</h3>
      </div>
    )

    val footer = {
      val setting = tpl.universe.settings.docfooter.value
      if (Set("epfl", "EPFL").contains(setting)) {
        <div id="footer">Scala programming documentation. Copyright (c) 2003-2011 <a href="http://www.epfl.ch" target="_top">EPFL</a>, with contributions from <a href="http://typesafe.com" target="_top">Typesafe</a>.</div>
      } else {
        <div id="footer"> { setting } </div>
      }
    }

    val engine =
      new TemplateEngine(XML.load(resourceStream("template/template.html")))
    engine.render(
      "bodyClass" -> (if (tpl.isTrait || tpl.isClass || tpl.qualifiedName == "scala.AnyRef") "type" else "value"),
      "signature" -> signature(tpl, true),
      "comment" ->  memberToCommentHtml(tpl, true),
      "icon" -> icon,
      "owner" -> owner,
      "displayName" -> displayName,
      "order" -> order,
      "ancestors" -> ancestors,
      "constructors" -> constructorsElem,
      "types" -> types,
      "abstructValues" -> abstructValues,
      "concreteValues" -> concreteValues,
      "deprecatedValues" -> deprecatedValues,
      "comment" -> memberToCommentHtml(tpl, true),
      "footer" -> footer
    )
  }

  def boundsToString(hi: Option[TypeEntity], lo: Option[TypeEntity]): String = {
    def bound0(bnd: Option[TypeEntity], pre: String): String = bnd match {
      case None => ""
      case Some(tpe) => pre ++ tpe.toString
    }
    bound0(hi, "<:") ++ bound0(lo, ">:")
  }

  def tparamsToString(tpss: List[TypeParam]): String = {
    if (tpss.isEmpty) "" else {
      def tparam0(tp: TypeParam): String =
         tp.variance + tp.name + boundsToString(tp.hi, tp.lo)
      def tparams0(tpss: List[TypeParam]): String = (tpss: @unchecked) match {
        case tp :: Nil => tparam0(tp)
        case tp :: tps => tparam0(tp) ++ ", " ++ tparams0(tps)
      }
      "[" + tparams0(tpss) + "]"
    }
  }

  def defParamsToString(d: MemberEntity with Def): String = {
    val paramLists: List[String] =
      if (d.valueParams.isEmpty) Nil
      else d.valueParams map (ps => ps map (_.resultType.name) mkString ("(",",",")"))

    tparamsToString(d.typeParams) + paramLists.mkString
  }

  def memberToHtml(mbr: MemberEntity): NodeSeq = {
    val defParamsString = mbr match {
      case d:MemberEntity with Def => defParamsToString(d)
      case _ => ""
    }
    <li name={ mbr.definitionName } visbl={ if (mbr.visibility.isProtected) "prt" else "pub" }
      data-isabs={ mbr.isAbstract.toString }>
      <a id={ mbr.name +defParamsString +":"+ mbr.resultType.name}/>
      { signature(mbr, false) }
      { memberToCommentHtml(mbr, false) }
    </li>
  }

  def memberToCommentHtml(mbr: MemberEntity, isSelf: Boolean): NodeSeq = {
    mbr match {
      case dte: DocTemplateEntity if isSelf =>
        // comment of class itself
        <xml:group>
          <div id="comment" class="fullcommenttop">{ memberToCommentBodyHtml(mbr, isSelf = true) }</div>
        </xml:group>
      case dte: DocTemplateEntity if mbr.comment.isDefined =>
        // comment of inner, documented class (only short comment, full comment is on the class' own page)
        memberToInlineCommentHtml(mbr, isSelf)
      case _ =>
        // comment of non-class member or non-documentented inner class
        val commentBody = memberToCommentBodyHtml(mbr, isSelf = false)
        if (commentBody.isEmpty)
          NodeSeq.Empty
        else {
          val shortComment = memberToShortCommentHtml(mbr, isSelf)
          val longComment = memberToUseCaseCommentHtml(mbr, isSelf) ++ memberToCommentBodyHtml(mbr, isSelf)

          val includedLongComment = if (shortComment.text.trim == longComment.text.trim)
            NodeSeq.Empty
          else
            <div class="fullcomment">{ longComment }</div>

          shortComment ++ includedLongComment
        }
    }
  }

  def memberToUseCaseCommentHtml(mbr: MemberEntity, isSelf: Boolean): NodeSeq = {
    mbr match {
      case nte: NonTemplateMemberEntity if nte.isUseCase =>
        inlineToHtml(comment.Text("[use case] "))
      case _ => NodeSeq.Empty
    }
  }

  def memberToShortCommentHtml(mbr: MemberEntity, isSelf: Boolean): NodeSeq = {
    if (mbr.comment.isEmpty)
      NodeSeq.Empty
    else
      <p class="shortcomment cmt">{ memberToUseCaseCommentHtml(mbr, isSelf) }{ inlineToHtml(mbr.comment.get.short) }</p>
  }

  def memberToInlineCommentHtml(mbr: MemberEntity, isSelf: Boolean): NodeSeq =
    <p class="comment cmt">{ inlineToHtml(mbr.comment.get.short) }</p>

  def memberToCommentBodyHtml(mbr: MemberEntity, isSelf: Boolean, isReduced: Boolean = false): NodeSeq = {
    val memberComment =
      if (mbr.comment.isEmpty) NodeSeq.Empty
      else <div class="comment cmt">{ commentToHtml(mbr.comment) }</div>

    val paramComments = {
      val prs: List[ParameterEntity] = mbr match {
        case cls: Class => cls.typeParams ::: cls.valueParams.flatten
        case trt: Trait => trt.typeParams
        case dfe: Def => dfe.typeParams ::: dfe.valueParams.flatten
        case ctr: Constructor => ctr.valueParams.flatten
        case _ => Nil
      }

      def mbrCmt = mbr.comment.get

      def paramCommentToHtml(prs: List[ParameterEntity]): NodeSeq = prs match {
        case Nil => NodeSeq.Empty

        case (tp: TypeParam) :: rest =>
          val paramEntry: NodeSeq = {
            <dt class="tparam">{ tp.name }</dt><dd class="cmt">{ bodyToHtml(mbrCmt.typeParams(tp.name)) }</dd>
          }
          paramEntry ++ paramCommentToHtml(rest)

        case (vp: ValueParam) :: rest  =>
          val paramEntry: NodeSeq = {
            <dt class="param">{ vp.name }</dt><dd class="cmt">{ bodyToHtml(mbrCmt.valueParams(vp.name)) }</dd>
          }
          paramEntry ++ paramCommentToHtml(rest)
      }

      if (mbr.comment.isEmpty) NodeSeq.Empty
      else {
        val cmtedPrs = prs filter {
          case tp: TypeParam => mbrCmt.typeParams isDefinedAt tp.name
          case vp: ValueParam => mbrCmt.valueParams isDefinedAt vp.name
        }
        if (cmtedPrs.isEmpty && mbrCmt.result.isEmpty) NodeSeq.Empty
        else {
          <dl class="paramcmts block">{
            paramCommentToHtml(cmtedPrs) ++ (
            mbrCmt.result match {
              case None => NodeSeq.Empty
              case Some(cmt) =>
                <dt>returns</dt><dd class="cmt">{ bodyToHtml(cmt) }</dd>
            })
          }</dl>
        }
      }
    }

    // --- start attributes block vals
    val attributes: Seq[scala.xml.Node] = {
      val fvs: List[comment.Paragraph] = visibility(mbr).toList
      if (fvs.isEmpty || isReduced) NodeSeq.Empty
      else {
        <dt>Attributes</dt>
        <dd>{ fvs map { fv => { inlineToHtml(fv.text) ++ xml.Text(" ") } } }</dd>
      }
    }

    val definitionClasses: Seq[scala.xml.Node] = {
      val inDefTpls = mbr.inDefinitionTemplates
      if ((inDefTpls.tail.isEmpty && (inDefTpls.head == mbr.inTemplate)) || isReduced) NodeSeq.Empty
      else {
        <dt>Definition Classes</dt>
        <dd>{ templatesToHtml(inDefTpls, xml.Text(" → ")) }</dd>
      }
    }

    val selfType: Seq[scala.xml.Node] = mbr match {
      case dtpl: DocTemplateEntity if (isSelf && !dtpl.selfType.isEmpty && !isReduced) =>
        <dt>Self Type</dt>
        <dd>{ typeToHtml(dtpl.selfType.get, hasLinks = true) }</dd>
      case _ => NodeSeq.Empty
    }

    val annotations: Seq[scala.xml.Node] = {
      // A list of annotations which don't show their arguments, e. g. because they are shown separately.
      val annotationsWithHiddenArguments = List("deprecated", "Deprecated", "migration")

      def showArguments(annotation: Annotation) =
        !(annotationsWithHiddenArguments.contains(annotation.qualifiedName))

      if (!mbr.annotations.isEmpty) {
        <dt>Annotations</dt>
        <dd>{
            mbr.annotations.map { annot =>
              <xml:group>
                <span class="name">@{ templateToHtml(annot.annotationClass) }</span>{
                  if (showArguments(annot)) argumentsToHtml(annot.arguments) else NodeSeq.Empty
                }
              </xml:group>
            }
          }
        </dd>
      } else NodeSeq.Empty
    }

    val sourceLink: Seq[scala.xml.Node] = mbr match {
      case dtpl: DocTemplateEntity if (isSelf && dtpl.sourceUrl.isDefined && dtpl.inSource.isDefined && !isReduced) =>
        val (absFile, line) = dtpl.inSource.get
        <dt>Source</dt>
        <dd>{ <a href={ dtpl.sourceUrl.get.toString }>{ Text(absFile.file.getName) }</a> }</dd>
      case _ => NodeSeq.Empty
    }

    val deprecation: Seq[scala.xml.Node] =
      if (mbr.deprecation.isEmpty || isReduced) NodeSeq.Empty
      else {
        <dt>Deprecated</dt>
        <dd class="cmt">{ bodyToHtml(mbr.deprecation.get) }</dd>
      }

    val migration: Seq[scala.xml.Node] =
      if(mbr.migration.isEmpty || isReduced) NodeSeq.Empty
      else {
          <dt>Migration</dt>
          <dd class="cmt">{ bodyToHtml(mbr.migration.get) }</dd>
      }

    val mainComment: Seq[scala.xml.Node] = mbr.comment match {
      case Some(comment) if (! isReduced) =>
        val example =
          if(!comment.example.isEmpty)
            <div class="block">Example{ if (comment.example.length > 1) "s" else ""}:
                <ol>{
                val exampleXml: List[scala.xml.NodeSeq] =
                  for(example <- comment.example ) yield
                    <li class="cmt">{ bodyToHtml(example) }</li>
                exampleXml.reduceLeft(_ ++ Text(", ") ++ _)
              }</ol>
              </div>
          else NodeSeq.Empty

        val version: Seq[scala.xml.Node] =
          if(!comment.version.isEmpty) {
            <dt>Version</dt>
            <dd>{ for(body <- comment.version.toList) yield {bodyToHtml(body)} }</dd>
          } else NodeSeq.Empty

        val sinceVersion: Seq[scala.xml.Node] =
          if(!comment.since.isEmpty) {
            <dt>Since</dt>
            <dd>{ for(body <- comment.since.toList) yield {bodyToHtml(body)} }</dd>
          } else NodeSeq.Empty

        val note: Seq[scala.xml.Node] =
          if(!comment.note.isEmpty) {
            <dt>Note</dt>
            <dd>{
              val noteXml: List[scala.xml.NodeSeq] = (for(note <- comment.note ) yield <span class="cmt">{bodyToHtml(note)}</span> )
              noteXml.reduceLeft(_ ++ Text(", ") ++ _)
            }</dd>
          } else NodeSeq.Empty

        val seeAlso: Seq[scala.xml.Node] =
          if(!comment.see.isEmpty) {
            <dt>See also</dt>
            <dd>{
              val seeXml:List[scala.xml.NodeSeq]=(for(see <- comment.see ) yield <span class="cmt">{bodyToHtml(see)}</span> )
              seeXml.reduceLeft(_ ++ Text(", ") ++ _)
            }</dd>
          } else NodeSeq.Empty

        val exceptions: Seq[scala.xml.Node] =
          if(!comment.throws.isEmpty) {
            <dt>Exceptions thrown</dt>
            <dd>{
              val exceptionsXml: Iterable[scala.xml.NodeSeq] = (for(exception <- comment.throws ) yield <span class="cmt">{Text(exception._1) ++ bodyToHtml(exception._2)}</span> )
              exceptionsXml.reduceLeft(_ ++ Text("") ++ _)
            }</dd>
          } else NodeSeq.Empty

        val todo: Seq[scala.xml.Node] =
          if(!comment.todo.isEmpty) {
            <dt>To do</dt>
            <dd>{
              val todoXml: List[scala.xml.NodeSeq] = (for(todo <- comment.todo ) yield <span class="cmt">{bodyToHtml(todo)}</span> )
              todoXml.reduceLeft(_ ++ Text(", ") ++ _)
            }</dd>
          } else NodeSeq.Empty

        example ++ version ++ sinceVersion ++ exceptions ++ todo ++ note ++ seeAlso

      case _ => NodeSeq.Empty
    }
    // end attributes block vals ---

    val attributesInfo = attributes ++ definitionClasses ++ selfType ++ annotations ++ deprecation ++ migration ++ sourceLink ++ mainComment
    val attributesBlock =
      if (attributesInfo.isEmpty)
        NodeSeq.Empty
      else
        <dl class="attributes block"> { attributesInfo }</dl>

    val linearization = mbr match {
      case dtpl: DocTemplateEntity if isSelf && !isReduced && dtpl.linearizationTemplates.nonEmpty =>
        <div class="toggleContainer block">
          <span class="toggle">Linear Supertypes</span>
          <div class="superTypes hiddenContent">{
            typesToHtml(dtpl.linearizationTypes, hasLinks = true, sep = xml.Text(", "))
          }</div>
        </div>
      case _ => NodeSeq.Empty
    }

    val subclasses = mbr match {
      case dtpl: DocTemplateEntity if isSelf && !isReduced && dtpl.subClasses.nonEmpty =>
        <div class="toggleContainer block">
          <span class="toggle">Known Subclasses</span>
          <div class="subClasses hiddenContent">{
            templatesToHtml(dtpl.subClasses.sortBy(_.name), xml.Text(", "))
          }</div>
        </div>
      case _ => NodeSeq.Empty
    }

    memberComment ++ paramComments ++ attributesBlock ++ linearization ++ subclasses
  }

  def kindToString(mbr: MemberEntity): String = {
    mbr match {
      case tpl: DocTemplateEntity => docEntityKindToString(tpl)
      case ctor: Constructor => "new"
      case tme: MemberEntity =>
        ( if (tme.isDef) "def"
          else if (tme.isVal) "val"
          else if (tme.isLazyVal) "lazy val"
          else if (tme.isVar) "var"
          else "type")
    }
  }

  def boundsToHtml(hi: Option[TypeEntity], lo: Option[TypeEntity], hasLinks: Boolean): NodeSeq = {
    def bound0(bnd: Option[TypeEntity], pre: String): NodeSeq = bnd match {
      case None => NodeSeq.Empty
      case Some(tpe) => xml.Text(pre) ++ typeToHtml(tpe, hasLinks)
    }
    bound0(lo, " >: ") ++ bound0(hi, " <: ")
  }

  def visibility(mbr: MemberEntity): Option[comment.Paragraph] = {
    import comment._
    import comment.{ Text => CText }
    mbr.visibility match {
      case PrivateInInstance() =>
        Some(Paragraph(CText("private[this]")))
      case PrivateInTemplate(owner) if (owner == mbr.inTemplate) =>
        Some(Paragraph(CText("private")))
      case PrivateInTemplate(owner) =>
        Some(Paragraph(Chain(List(CText("private["), EntityLink(owner), CText("]")))))
      case ProtectedInInstance() =>
        Some(Paragraph(CText("protected[this]")))
      case ProtectedInTemplate(owner) if (owner == mbr.inTemplate) =>
        Some(Paragraph(CText("protected")))
      case ProtectedInTemplate(owner) =>
        Some(Paragraph(Chain(List(CText("protected["), EntityLink(owner), CText("]")))))
      case Public() =>
        None
    }
  }

  /** name, tparams, params, result */
  def signature(mbr: MemberEntity, isSelf: Boolean, isReduced: Boolean = false): NodeSeq = {
    def inside(hasLinks: Boolean, nameLink: String = ""): NodeSeq =
      <xml:group>
      <span class="modifier_kind">
        <span class="modifier">{ mbr.flags.map(flag => inlineToHtml(flag.text) ++ xml.Text(" ")) }</span>
        <span class="kind">{ kindToString(mbr) }</span>
      </span>
      <span class="symbol">
        {
          val nameHtml = {
            val value = if (mbr.isConstructor) tpl.name else mbr.name
            val span = if (mbr.deprecation.isDefined)
              <span class={"name deprecated"} title={"Deprecated: "+bodyToStr(mbr.deprecation.get)}>{ value }</span>
            else
              <span class={"name"}>{ value }</span>
            val encoded = scala.reflect.NameTransformer.encode(value)
            if (encoded != value) {
              span % new UnprefixedAttribute("title",
                                             "gt4s: " + encoded +
                                             span.attribute("title").map(
                                               node => ". " + node
                                             ).getOrElse(""),
                                             scala.xml.Null)
            } else {
              span
            }
          }
          if (!nameLink.isEmpty)
            <a href={nameLink}>{nameHtml}</a>
          else nameHtml
        }
        {
          def tparamsToHtml(mbr: Entity): NodeSeq = mbr match {
            case hk: HigherKinded =>
              val tpss = hk.typeParams
              if (tpss.isEmpty) NodeSeq.Empty else {
                def tparam0(tp: TypeParam): NodeSeq =
                  <span name={ tp.name }>{ tp.variance + tp.name }{ tparamsToHtml(tp) }{ boundsToHtml(tp.hi, tp.lo, hasLinks)}</span>
                def tparams0(tpss: List[TypeParam]): NodeSeq = (tpss: @unchecked) match {
                  case tp :: Nil => tparam0(tp)
                  case tp :: tps => tparam0(tp) ++ Text(", ") ++ tparams0(tps)
                }
                <span class="tparams">[{ tparams0(tpss) }]</span>
              }
              case _ => NodeSeq.Empty
          }
          tparamsToHtml(mbr)
        }
        { if (isReduced) NodeSeq.Empty else {
            def paramsToHtml(vlsss: List[List[ValueParam]]): NodeSeq = {
              def param0(vl: ValueParam): NodeSeq =
                // notice the }{ in the next lines, they are necessary to avoid a undesired withspace in output
                <span name={ vl.name }>{
                  Text(vl.name)
                }{ Text(": ") ++ typeToHtml(vl.resultType, hasLinks) }{
                  vl.defaultValue match {
                    case Some(v) => Text(" = ") ++ treeToHtml(v)
                    case None => NodeSeq.Empty
                  }
                }</span>

              def params0(vlss: List[ValueParam]): NodeSeq = vlss match {
                case Nil => NodeSeq.Empty
                case vl :: Nil => param0(vl)
                case vl :: vls => param0(vl) ++ Text(", ") ++ params0(vls)
              }
              def implicitCheck(vlss: List[ValueParam]): NodeSeq = vlss match {
                case vl :: vls => if(vl.isImplicit) { <span class="implicit">implicit </span> } else Text("")
                case _ => Text("")
              }
              vlsss map { vlss => <span class="params">({implicitCheck(vlss) ++ params0(vlss) })</span> }
            }
            mbr match {
              case cls: Class => paramsToHtml(cls.valueParams)
              case ctr: Constructor => paramsToHtml(ctr.valueParams)
              case dfe: Def => paramsToHtml(dfe.valueParams)
              case _ => NodeSeq.Empty
            }
          }
        }{ if (isReduced) NodeSeq.Empty else {
          mbr match {
            case tpl: DocTemplateEntity if tpl.parentType.isDefined =>
              <span class="result"> extends { typeToHtml(tpl.parentType.get, hasLinks) }</span>

            case tme: MemberEntity if (tme.isDef || tme.isVal || tme.isLazyVal || tme.isVar) =>
              <span class="result">: { typeToHtml(tme.resultType, hasLinks) }</span>

            case abt: AbstractType =>
              val b2s = boundsToHtml(abt.hi, abt.lo, hasLinks)
              if (b2s != NodeSeq.Empty)
                <span class="result">{ b2s }</span>
              else NodeSeq.Empty

            case alt: AliasType =>
              <span class="result"> = { typeToHtml(alt.alias, hasLinks) }</span>
            case _ => NodeSeq.Empty
          }
        }}
      </span>
      </xml:group>
    mbr match {
      case dte: DocTemplateEntity if !isSelf =>
        <h4 class="signature">{ inside(hasLinks = false, nameLink = relativeLinkTo(dte)) }</h4>
      case _ if isSelf =>
        <h4 id="signature" class="signature">{ inside(hasLinks = true) }</h4>
      case _ =>
        <h4 class="signature">{ inside(hasLinks = true) }</h4>
    }

  }

  /** */
  def treeToHtml(tree: TreeEntity): NodeSeq = {

    /** Makes text good looking in the html page : newlines and basic indentation,
     * You must change this function if you want to improve pretty printing of default Values
     */
    def codeStringToXml(text: String): NodeSeq = {
      var goodLookingXml: NodeSeq = NodeSeq.Empty
      var indent = 0
      for (c <- text) c match {
        case '{' => indent+=1
          goodLookingXml ++= Text("{")
        case '}' => indent-=1
          goodLookingXml ++= Text("}")
        case '\n' =>
          goodLookingXml++= <br/> ++ indentation
        case _ => goodLookingXml ++= Text(c.toString)
      }
      def indentation:NodeSeq = {
        var indentXml = NodeSeq.Empty
        for (x <- 1 to indent) indentXml ++= Text("&nbsp;&nbsp;")
        indentXml
      }
      goodLookingXml
    }

    var index = 0
    val str = tree.expression
    val length = str.length
    var myXml: NodeSeq = NodeSeq.Empty
    for ((from, (member, to)) <- tree.refEntity.toSeq) {
      if (index < from) {
        myXml ++= codeStringToXml(str.substring(index,from))
        index = from
      }
      if (index == from) {
        member match {
          case mbr: DocTemplateEntity =>
            val link = relativeLinkTo(mbr)
            myXml ++= <span class="name"><a href={link}>{str.substring(from, to)}</a></span>
          case mbr: MemberEntity =>
            val anchor = "#" + mbr.name + defParamsString(mbr) + ":" + mbr.resultType.name
            val link = relativeLinkTo(mbr.inTemplate)
            myXml ++= <span class="name"><a href={link ++ anchor}>{str.substring(from, to)}</a></span>
        }
        index = to
      }
    }
    // function used in the MemberEntity case above
    def defParamsString(mbr: Entity):String = mbr match {
      case d:MemberEntity with Def => defParamsToString(d)
      case _ => ""
    }

    if (index <= length-1)
      myXml ++= codeStringToXml(str.substring(index, length ))

    if (length < 36)
      <span class="symbol">{ myXml }</span>
    else
      <span class="defval" name={ myXml }>{ "..." }</span>
  }

  private def argumentsToHtml(argss: List[ValueArgument]): NodeSeq = {
    def argumentsToHtml0(argss: List[ValueArgument]): NodeSeq = argss match {
      case Nil         => NodeSeq.Empty
      case arg :: Nil  => argumentToHtml(arg)
      case arg :: args => argumentToHtml(arg) ++ xml.Text(", ") ++ argumentsToHtml0(args)
    }
    <span class="args">({ argumentsToHtml0(argss) })</span>
  }

  private def argumentToHtml(arg: ValueArgument): NodeSeq = {
    <span>
      {
        arg.parameter match {
          case Some(param) => Text(param.name + " = ")
          case None => NodeSeq.Empty
        }
      }
      { treeToHtml(arg.value) }
    </span>
  }

  private def bodyToStr(body: comment.Body): String =
    body.blocks flatMap (blockToStr(_)) mkString ""

  private def blockToStr(block: comment.Block): String = block match {
    case comment.Paragraph(in) => inlineToStr(in)
    case _ => block.toString
  }

  private def inlineToStr(inl: comment.Inline): String = inl match {
    case comment.Chain(items) => items flatMap (inlineToStr(_)) mkString ""
    case comment.Italic(in) => inlineToStr(in)
    case comment.Bold(in) => inlineToStr(in)
    case comment.Underline(in) => inlineToStr(in)
    case comment.Monospace(in) => inlineToStr(in)
    case comment.Text(text) => text
    case comment.Summary(in) => inlineToStr(in)
    case _ => inl.toString
  }

}