public Sequence(List <ContentList> elementContentLists, SequenceType sequenceType)
{
this.sequenceType = sequenceType;
this.sequenceElements = new List <Parsed.Object> ();
foreach (var elementContentList in elementContentLists)
{
var contentObjs = elementContentList.content;
Parsed.Object seqElObject = null;
// Don't attempt to create a weave for the sequence element
// if the content list is empty. Weaves don't like it!
if (contentObjs == null || contentObjs.Count == 0)
{
seqElObject = elementContentList;
}
else
{
seqElObject = new Weave(contentObjs);
}
this.sequenceElements.Add(seqElObject);
AddContent(seqElObject);
}
}
List<Parsed.Object> SplitWeaveAndSubFlowContent(List<Parsed.Object> contentObjs)
{
var weaveObjs = new List<Parsed.Object> ();
var subFlowObjs = new List<Parsed.Object> ();
_subFlowsByName = new Dictionary<string, FlowBase> ();
foreach (var obj in contentObjs) {
var subFlow = obj as FlowBase;
if (subFlow) {
if (_firstChildFlow == null)
_firstChildFlow = subFlow;
subFlowObjs.Add (obj);
_subFlowsByName [subFlow.name] = subFlow;
} else {
weaveObjs.Add (obj);
}
}
var finalContent = new List<Parsed.Object> ();
if (weaveObjs.Count > 0) {
_rootWeave = new Weave (weaveObjs, 0);
finalContent.Add (_rootWeave);
}
if (subFlowObjs.Count > 0) {
finalContent.AddRange (subFlowObjs);
}
return finalContent;
}
List <Parsed.Object> SplitWeaveAndSubFlowContent(List <Parsed.Object> contentObjs)
{
var weaveObjs = new List <Parsed.Object> ();
var subFlowObjs = new List <Parsed.Object> ();
_subFlowsByName = new Dictionary <string, FlowBase> ();
foreach (var obj in contentObjs)
{
var subFlow = obj as FlowBase;
if (subFlow)
{
subFlowObjs.Add(obj);
_subFlowsByName [subFlow.name] = subFlow;
}
else
{
weaveObjs.Add(obj);
}
}
var finalContent = new List <Parsed.Object> ();
if (weaveObjs.Count > 0)
{
_rootWeave = new Weave(weaveObjs, 0);
finalContent.Add(_rootWeave);
}
if (subFlowObjs.Count > 0)
{
finalContent.AddRange(subFlowObjs);
}
return(finalContent);
}
public ConditionalSingleBranch(List<Parsed.Object> content)
{
// Branches are allowed to be empty
if (content != null) {
_innerWeave = new Weave (content);
AddContent (_innerWeave);
}
}
public ConditionalSingleBranch(List <Parsed.Object> content)
{
// Branches are allowed to be empty
if (content != null)
{
_innerWeave = new Weave(content);
AddContent(_innerWeave);
}
}
void ConstructWeaveHierarchyFromIndentation()
{
// Find nested indentation and convert to a proper object hierarchy
// (i.e. indented content is replaced with a Weave object that contains
// that nested content)
int contentIdx = 0;
while (contentIdx < content.Count)
{
Parsed.Object obj = content [contentIdx];
// Choice or Gather
if (obj is IWeavePoint)
{
var weavePoint = (IWeavePoint)obj;
var weaveIndentIdx = weavePoint.indentationDepth - 1;
// Inner level indentation - recurse
if (weaveIndentIdx > baseIndentIndex)
{
// Step through content until indent jumps out again
int innerWeaveStartIdx = contentIdx;
while (contentIdx < content.Count)
{
var innerWeaveObj = content [contentIdx] as IWeavePoint;
if (innerWeaveObj != null)
{
var innerIndentIdx = innerWeaveObj.indentationDepth - 1;
if (innerIndentIdx <= baseIndentIndex)
{
break;
}
}
contentIdx++;
}
int weaveContentCount = contentIdx - innerWeaveStartIdx;
var weaveContent = content.GetRange(innerWeaveStartIdx, weaveContentCount);
content.RemoveRange(innerWeaveStartIdx, weaveContentCount);
var weave = new Weave(weaveContent, weaveIndentIdx);
InsertContent(innerWeaveStartIdx, weave);
// Continue iteration from this point
contentIdx = innerWeaveStartIdx;
}
}
contentIdx++;
}
}
// Add nested block at a greater indentation level
public void AddRuntimeForNestedWeave(Weave nestedResult)
{
// Add this inner block to current container
// (i.e. within the main container, or within the last defined Choice/Gather)
AddGeneralRuntimeContent(nestedResult.rootContainer);
// Now there's a deeper indentation level, the previous weave point doesn't
// count as a loose end (since it will have content to go to)
if (previousWeavePoint != null)
{
looseEnds.Remove(previousWeavePoint);
addContentToPreviousWeavePoint = false;
}
}
List <Parsed.Object> SplitWeaveAndSubFlowContent(List <Parsed.Object> contentObjs, bool isRootStory)
{
var weaveObjs = new List <Parsed.Object> ();
var subFlowObjs = new List <Parsed.Object> ();
_subFlowsByName = new Dictionary <string, FlowBase> ();
foreach (var obj in contentObjs)
{
var subFlow = obj as FlowBase;
if (subFlow)
{
if (_firstChildFlow == null)
{
_firstChildFlow = subFlow;
}
subFlowObjs.Add(obj);
_subFlowsByName [subFlow.identifier?.name] = subFlow;
}
else
{
weaveObjs.Add(obj);
}
}
// Implicit final gather in top level story for ending without warning that you run out of content
if (isRootStory)
{
weaveObjs.Add(new Gather(null, 1));
weaveObjs.Add(new Divert(new Path(Identifier.Done)));
}
var finalContent = new List <Parsed.Object> ();
if (weaveObjs.Count > 0)
{
_rootWeave = new Weave(weaveObjs, 0);
finalContent.Add(_rootWeave);
}
if (subFlowObjs.Count > 0)
{
finalContent.AddRange(subFlowObjs);
}
return(finalContent);
}
void PassLooseEndsToAncestors()
{
if (looseEnds.Count == 0)
{
return;
}
// Search for Weave ancestor to pass loose ends to for gathering.
// There are two types depending on whether the current weave
// is separated by a conditional or sequence.
// - An "inner" weave is one that is directly connected to the current
// weave - i.e. you don't have to pass through a conditional or
// sequence to get to it. We're allowed to pass all loose ends to
// one of these.
// - An "outer" weave is one that is outside of a conditional/sequence
// that the current weave is nested within. We're only allowed to
// pass gathers (i.e. 'normal flow') loose ends up there, not normal
// choices. The rule is that choices have to be diverted explicitly
// by the author since it's ambiguous where flow should go otherwise.
//
// e.g.:
//
// - top <- e.g. outer weave
// {true:
// * choice <- e.g. inner weave
// * * choice 2
// more content <- e.g. current weave
// * choice 2
// }
// - more of outer weave
//
Weave closestInnerWeaveAncestor = null;
Weave closestOuterWeaveAncestor = null;
// Find inner and outer ancestor weaves as defined above.
bool nested = false;
for (var ancestor = this.parent; ancestor != null; ancestor = ancestor.parent)
{
// Found ancestor?
var weaveAncestor = ancestor as Weave;
if (weaveAncestor != null)
{
if (!nested && closestInnerWeaveAncestor == null)
{
closestInnerWeaveAncestor = weaveAncestor;
}
if (nested && closestOuterWeaveAncestor == null)
{
closestOuterWeaveAncestor = weaveAncestor;
}
}
// Weaves nested within Sequences or Conditionals are
// "sealed" - any loose ends require explicit diverts.
if (ancestor is Sequence || ancestor is Conditional)
{
nested = true;
}
}
// No weave to pass loose ends to at all?
if (closestInnerWeaveAncestor == null && closestOuterWeaveAncestor == null)
{
return;
}
// Follow loose end passing logic as defined above
for (int i = looseEnds.Count - 1; i >= 0; i--)
{
var looseEnd = looseEnds[i];
bool received = false;
// This weave is nested within a conditional or sequence:
// - choices can only be passed up to direct ancestor ("inner") weaves
// - gathers can be passed up to either, but favour the closer (inner) weave
// if there is one
if (nested)
{
if (looseEnd is Choice && closestInnerWeaveAncestor != null)
{
closestInnerWeaveAncestor.ReceiveLooseEnd(looseEnd);
received = true;
}
else if (!(looseEnd is Choice))
{
var receivingWeave = closestInnerWeaveAncestor ?? closestOuterWeaveAncestor;
if (receivingWeave != null)
{
receivingWeave.ReceiveLooseEnd(looseEnd);
received = true;
}
}
}
// No nesting, all loose ends can be safely passed up
else
{
closestInnerWeaveAncestor.ReceiveLooseEnd(looseEnd);
received = true;
}
if (received)
{
looseEnds.RemoveAt(i);
}
}
}
void ConstructWeaveHierarchyFromIndentation()
{
// Find nested indentation and convert to a proper object hierarchy
// (i.e. indented content is replaced with a Weave object that contains
// that nested content)
int contentIdx = 0;
while (contentIdx < content.Count) {
Parsed.Object obj = content [contentIdx];
// Choice or Gather
if (obj is IWeavePoint) {
var weavePoint = (IWeavePoint)obj;
var weaveIndentIdx = weavePoint.indentationDepth - 1;
// Inner level indentation - recurse
if (weaveIndentIdx > baseIndentIndex) {
// Step through content until indent jumps out again
int innerWeaveStartIdx = contentIdx;
while (contentIdx < content.Count) {
var innerWeaveObj = content [contentIdx] as IWeavePoint;
if (innerWeaveObj != null) {
var innerIndentIdx = innerWeaveObj.indentationDepth - 1;
if (innerIndentIdx <= baseIndentIndex) {
break;
}
}
contentIdx++;
}
int weaveContentCount = contentIdx - innerWeaveStartIdx;
var weaveContent = content.GetRange (innerWeaveStartIdx, weaveContentCount);
content.RemoveRange (innerWeaveStartIdx, weaveContentCount);
var weave = new Weave (weaveContent, weaveIndentIdx);
InsertContent (innerWeaveStartIdx, weave);
// Continue iteration from this point
contentIdx = innerWeaveStartIdx;
}
}
contentIdx++;
}
}
// Add nested block at a greater indentation level
public void AddRuntimeForNestedWeave(Weave nestedResult)
{
// Add this inner block to current container
// (i.e. within the main container, or within the last defined Choice/Gather)
AddGeneralRuntimeContent (nestedResult.rootContainer);
// Now there's a deeper indentation level, the previous weave point doesn't
// count as a loose end (since it will have content to go to)
if (previousWeavePoint != null) {
looseEnds.Remove ((Parsed.Object)previousWeavePoint);
addContentToPreviousWeavePoint = false;
}
}