/// <summary> Is call to UpdateDataFrom is allowed? </summary>
internal bool CanUpdateDataFrom(AXmlObject source)
{
return
(this.GetType() == source.GetType() &&
this.StartOffset == source.StartOffset &&
(this.LastUpdatedFrom == source || !this.IsCached));
}
/// <summary> Copy all data from the 'source' to this object </summary>
/// <remarks> Returns true if any updates were done </remarks>
internal virtual bool UpdateDataFrom(AXmlObject source)
{
Assert(this.GetType() == source.GetType(), "Source has different type");
DebugAssert(this.StartOffset == source.StartOffset, "Source has different StartOffset");
if (this.LastUpdatedFrom == source)
{
DebugAssert(this.EndOffset == source.EndOffset, "Source has different EndOffset");
return(false);
}
Assert(!this.IsCached, "Can not update cached item");
Assert(source.IsCached, "Must update from cache");
this.LastUpdatedFrom = source;
this.StartOffset = source.StartOffset;
// In some cases we are just updating objects of that same
// type and position and hoping to be luckily right
this.EndOffset = source.EndOffset;
// Do not bother comparing - assume changed if non-null
if (this.syntaxErrors != null || source.syntaxErrors != null)
{
// May be called again in derived class - oh, well, does not matter
OnChanging();
this.Document.Parser.TrackedSegments.RemoveSyntaxErrorsOf(this);
if (source.syntaxErrors == null)
{
this.syntaxErrors = null;
}
else
{
this.syntaxErrors = new List <SyntaxError>();
foreach (var error in source.MySyntaxErrors)
{
// The object differs, so create our own copy
// The source still might need it in the future and we do not want to break it
this.AddSyntaxError(error.Clone(this));
}
}
this.Document.Parser.TrackedSegments.AddSyntaxErrorsOf(this);
OnChanged();
}
return(true);
}
/// <summary> Copy all data from the 'source' to this object </summary>
/// <remarks> Returns true if any updates were done </remarks>
internal virtual bool UpdateDataFrom(AXmlObject source)
{
Assert(this.GetType() == source.GetType(), "Source has different type");
DebugAssert(this.StartOffset == source.StartOffset, "Source has different StartOffset");
if (this.LastUpdatedFrom == source) {
DebugAssert(this.EndOffset == source.EndOffset, "Source has different EndOffset");
return false;
}
Assert(!this.IsCached, "Can not update cached item");
Assert(source.IsCached, "Must update from cache");
this.LastUpdatedFrom = source;
this.StartOffset = source.StartOffset;
// In some cases we are just updating objects of that same
// type and position and hoping to be luckily right
this.EndOffset = source.EndOffset;
// Do not bother comparing - assume changed if non-null
if (this.syntaxErrors != null || source.syntaxErrors != null) {
// May be called again in derived class - oh, well, does not matter
OnChanging();
this.Document.Parser.TrackedSegments.RemoveSyntaxErrorsOf(this);
if (source.syntaxErrors == null) {
this.syntaxErrors = null;
} else {
this.syntaxErrors = new List<SyntaxError>();
foreach(var error in source.MySyntaxErrors) {
// The object differs, so create our own copy
// The source still might need it in the future and we do not want to break it
this.AddSyntaxError(error.Clone(this));
}
}
this.Document.Parser.TrackedSegments.AddSyntaxErrorsOf(this);
OnChanged();
}
return true;
}
/// <summary> Is call to UpdateDataFrom is allowed? </summary>
internal bool CanUpdateDataFrom(AXmlObject source)
{
return
this.GetType() == source.GetType() &&
this.StartOffset == source.StartOffset &&
(this.LastUpdatedFrom == source || !this.IsCached);
}
/// <summary> Get posible configurations after considering fiven object </summary>
Configurations ProcessObject(Configurations oldConfigs, AXmlObject obj)
{
AXmlParser.Log("Processing {0}", obj);
AXmlTag tag = obj as AXmlTag;
AXmlParser.Assert(obj is AXmlTag || obj is AXmlText || obj is AXmlElement, obj.GetType().Name + " not expected");
if (obj is AXmlElement)
{
AXmlParser.Assert(((AXmlElement)obj).IsProperlyNested, "Element not proprly nested");
}
Configurations newConfigs = new Configurations();
foreach (var kvp in oldConfigs)
{
Configuration oldConfig = kvp.Value;
var oldStartTags = oldConfig.StartTags;
var oldDocument = oldConfig.Document;
int oldCost = oldConfig.Cost;
if (tag != null && tag.IsStartTag)
{
newConfigs.Add(new Configuration { // Push start-tag (cost 0)
StartTags = oldStartTags.Push(tag),
Document = oldDocument.Push(tag),
Cost = oldCost,
});
}
else if (tag != null && tag.IsEndTag)
{
newConfigs.Add(new Configuration { // Ignore (cost 1)
StartTags = oldStartTags,
Document = oldDocument.Push(StartTagPlaceholder).Push(tag),
Cost = oldCost + 1,
});
if (!oldStartTags.IsEmpty && oldStartTags.Peek().Name != tag.Name)
{
newConfigs.Add(new Configuration { // Pop 1 item (cost 1) - not mathcing
StartTags = oldStartTags.Pop(),
Document = oldDocument.Push(tag),
Cost = oldCost + 1,
});
}
int popedCount = 0;
var startTags = oldStartTags;
var doc = oldDocument;
foreach (AXmlTag poped in oldStartTags)
{
popedCount++;
if (poped.Name == tag.Name)
{
newConfigs.Add(new Configuration { // Pop 'x' items (cost x-1) - last one is matching
StartTags = startTags.Pop(),
Document = doc.Push(tag),
Cost = oldCost + popedCount - 1,
});
}
startTags = startTags.Pop();
doc = doc.Push(EndTagPlaceholder);
}
}
else
{
// Empty tag or other tag type or text or properly nested element
newConfigs.Add(new Configuration { // Ignore (cost 0)
StartTags = oldStartTags,
Document = oldDocument.Push(obj),
Cost = oldCost,
});
}
}
// Log("New configurations:" + newConfigs.ToString());
Configurations bestNewConfigurations = new Configurations(
newConfigs.Values.OrderBy(v => v.Cost).Take(maxConfigurationCount)
);
// AXmlParser.Log("Best new configurations:" + bestNewConfigurations.ToString());
return(bestNewConfigurations);
}
