public static void PropagateLineInfo(XamlWriter targetWriter, IXamlLineInfo lineInfo)
{
if (lineInfo != null)
{
(targetWriter as IXamlLineInfoConsumer).SetLineInfo(lineInfo.LineNumber, lineInfo.LinePosition);
}
}
// This method is a workaround for TFS bug #788190, since XamlReader.ReadSubtree() should (but doesn't) preserve IXamlLineInfo on the subreader
public static void Transform(XamlReader reader, XamlWriter writer, IXamlLineInfo readerLineInfo, bool closeWriter)
{
IXamlLineInfoConsumer consumer = writer as IXamlLineInfoConsumer;
SharedFx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer");
bool shouldPassLineNumberInfo = false;
if (readerLineInfo != null)
{
shouldPassLineNumberInfo = true;
}
while (reader.Read())
{
if (shouldPassLineNumberInfo)
{
consumer.SetLineInfo(readerLineInfo.LineNumber, readerLineInfo.LinePosition);
}
writer.WriteNode(reader);
}
if (closeWriter)
{
writer.Close();
}
}
public static XamlWriter CreateBuilderWriter(XamlWriter innerWriter)
{
if (innerWriter == null)
{
throw FxTrace.Exception.ArgumentNull("innerWriter");
}
return new ActivityBuilderXamlWriter(innerWriter);
}
public static void PropagateLineInfo(XamlWriter targetWriter, IXamlLineInfo lineInfo)
{
if (lineInfo != null)
{
IXamlLineInfoConsumer consumer = targetWriter as IXamlLineInfoConsumer;
Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer");
consumer.SetLineInfo(lineInfo.LineNumber, lineInfo.LinePosition);
}
}
public XamlNodeQueue(XamlSchemaContext schemaContext)
{
if (schemaContext == null)
{
throw new ArgumentNullException("schemaContext");
}
this._nodeQueue = new Queue<XamlNode>();
this._endOfStreamNode = new XamlNode(XamlNode.InternalNodeType.EndOfStream);
this._writer = new WriterDelegate(new XamlNodeAddDelegate(this.Add), new XamlLineInfoAddDelegate(this.AddLineInfo), schemaContext);
}
public override void WriteTo(XamlWriter writer)
{
Log("GetObject");
writer.WriteGetObject();
Debug.Indent();
foreach (XamlNode node in this.Children)
node.WriteTo(writer);
Debug.Unindent();
Log("EndObject");
writer.WriteEndObject();
}
internal static void WriteNodeList(XamlWriter writer, XamlNodeList nodeList)
{
// We need to pass the ErrorNodes contents through as a NodeList, because XOW doesn't
// currently support unknown types, even inside a DeferLoad block.
// But if a NodeList is written to XOW as a Value, XOW will unpack, forcing us to re-buffer
// the nodes in our deferring loader. So we wrap the NodeList value inside a dummy StartObject.
writer.WriteStartObject(XamlLanguage.Object);
writer.WriteStartMember(XamlLanguage.Initialization);
writer.WriteValue(nodeList);
writer.WriteEndMember();
writer.WriteEndObject();
}
protected override void Dispose(bool disposing)
{
try
{
if ((disposing && !base.IsDisposed) && (this._deferredWriter != null))
{
this._deferredWriter.Close();
this._deferredWriter = null;
}
}
finally
{
base.Dispose(disposing);
}
}
}//end
//从[xaml]字串得到[ActivityBuilder]对象
public static string xamlFromActivityBuilder(ActivityBuilder activityBuilder)
{
string xamlString = "";
StringBuilder stringBuilder = new StringBuilder();
System.IO.StringWriter stringWriter = new System.IO.StringWriter(stringBuilder);
System.Xaml.XamlSchemaContext xamlSchemaContext = new System.Xaml.XamlSchemaContext();
System.Xaml.XamlXmlWriter xamlXmlWriter = new System.Xaml.XamlXmlWriter(stringWriter, xamlSchemaContext);
System.Xaml.XamlWriter xamlWriter = System.Activities.XamlIntegration.ActivityXamlServices.CreateBuilderWriter(xamlXmlWriter);
System.Xaml.XamlServices.Save(xamlWriter, activityBuilder);
xamlString = stringBuilder.ToString();
return(xamlString);
}
public static void Transform(XamlReader reader, XamlWriter writer, IXamlLineInfo readerLineInfo, bool closeWriter)
{
IXamlLineInfoConsumer consumer = writer as IXamlLineInfoConsumer;
bool flag = false;
if (readerLineInfo != null)
{
flag = true;
}
while (reader.Read())
{
if (flag)
{
consumer.SetLineInfo(readerLineInfo.LineNumber, readerLineInfo.LinePosition);
}
writer.WriteNode(reader);
}
if (closeWriter)
{
writer.Close();
}
}
public override void WriteTo(XamlWriter writer)
{
Log("NamespaceDeclaration {0}", this.Namespace);
Debug.Assert(this.Children.Count == 0);
writer.WriteNamespace(this.Namespace);
}
public override void WriteTo(XamlWriter writer)
{
Log("Value {0}", this.Value);
Debug.Assert(this.Children.Count == 0);
// requires XamlReaderSettings.ValuesMustBeString = true to work properly
writer.WriteValue(this.Value);
}
public override void WriteTo(XamlWriter writer)
{
Log("StartMember {0}", this.Member);
writer.WriteStartMember(this.Member);
Debug.Indent();
foreach (XamlNode node in this.Children)
node.WriteTo(writer);
Debug.Unindent();
Log("EndMember");
writer.WriteEndMember();
}
public viewStateXamlWriter(XamlWriter innerWriter)
{
this.InnerWriter = innerWriter;
this.MemberStack = new Stack<XamlMember>();
}
// Copy the root namespaces from a reader to a writer.
// DesignTimeXamlWriter follows proper XAML convention by omitting the assembly name from
// clr-namespaces in the local assembly. However, VB Expressions aren't local-assembly-aware,
// and require an assembly name. So for every clr-namespace with no assembly name, we add an
// additional namespace record with an assembly name, to support VB.
// We only do this at the root level, since the designer only writes out namespaces at the root level.
internal void CopyNamespacesAndAddLocalAssembly(System.Xaml.XamlReader activityBuilderReader, System.Xaml.XamlWriter objectWriter)
{
// Designer loads alwas provide line info
IXamlLineInfo lineInfo = (IXamlLineInfo)activityBuilderReader;
IXamlLineInfoConsumer lineInfoConsumer = (IXamlLineInfoConsumer)objectWriter;
HashSet <string> definedPrefixes = new HashSet <string>();
List <NamespaceDeclaration> localAsmNamespaces = null;
while (activityBuilderReader.Read())
{
lineInfoConsumer.SetLineInfo(lineInfo.LineNumber, lineInfo.LinePosition);
if (activityBuilderReader.NodeType == XamlNodeType.NamespaceDeclaration)
{
definedPrefixes.Add(activityBuilderReader.Namespace.Prefix);
if (this.XamlSchemaContext.IsClrNamespaceWithNoAssembly(activityBuilderReader.Namespace.Namespace))
{
if (localAsmNamespaces == null)
{
localAsmNamespaces = new List <NamespaceDeclaration>();
}
localAsmNamespaces.Add(activityBuilderReader.Namespace);
}
objectWriter.WriteNode(activityBuilderReader);
}
else
{
if (localAsmNamespaces != null)
{
foreach (NamespaceDeclaration ns in localAsmNamespaces)
{
string prefix = null;
int i = 0;
do
{
i++;
prefix = ns.Prefix + i.ToString(CultureInfo.InvariantCulture);
}while (definedPrefixes.Contains(prefix));
string fullNs = this.XamlSchemaContext.AddLocalAssembly(ns.Namespace);
objectWriter.WriteNamespace(new NamespaceDeclaration(fullNs, prefix));
definedPrefixes.Add(prefix);
}
}
objectWriter.WriteNode(activityBuilderReader);
return;
}
}
}
private void Process_KeyElementStart()
{
Int16 typeId = _binaryReader.ReadInt16();
byte flags = _binaryReader.ReadByte();
Int32 valuePosition = _binaryReader.ReadInt32();
bool isShared = _binaryReader.ReadBoolean();
bool isSharedSet = _binaryReader.ReadBoolean();
XamlType type = _context.SchemaContext.GetXamlType(typeId);
_context.PushScope();
_context.CurrentFrame.XamlType = type;
// Store a key record that can be accessed later.
// This is a complex scenario so we need to write to the keyList
KeyRecord key = new KeyRecord(isShared, isSharedSet, valuePosition, _context.SchemaContext);
key.Flags = flags;
key.KeyNodeList.Writer.WriteStartObject(type);
_context.InsideKeyRecord = true;
// Push the current writer onto a stack and add the KeyNodeList writer.
// All subsequent calls will be added to that writer.
_xamlWriterStack.Push(_xamlNodesWriter);
_xamlNodesWriter = key.KeyNodeList.Writer;
if (_context.PreviousFrame.IsDeferredContent)
{
_context.KeyList.Add(key);
}
else
{
_context.PreviousFrame.Key = key;
}
}
private void Transform(XamlReader reader, XamlWriter myWriter)
{
while (!reader.IsEof)
{
reader.Read();
myWriter.WriteNode(reader);
}
}
public static void Transform (XamlReader xamlReader, XamlWriter xamlWriter, bool closeWriter)
{
if (xamlReader == null)
throw new ArgumentNullException ("xamlReader");
if (xamlWriter == null)
throw new ArgumentNullException ("xamlWriter");
if (xamlReader.NodeType == XamlNodeType.None)
xamlReader.Read ();
while (!xamlReader.IsEof) {
xamlWriter.WriteNode (xamlReader);
xamlReader.Read ();
}
if (closeWriter)
xamlWriter.Close ();
}
public static void Transform(XamlReader xamlReader, XamlWriter xamlWriter, bool closeWriter)
{
if (xamlReader == null)
{
throw new ArgumentNullException("xamlReader");
}
if (xamlWriter == null)
{
throw new ArgumentNullException("xamlWriter");
}
IXamlLineInfo info = xamlReader as IXamlLineInfo;
IXamlLineInfoConsumer consumer = xamlWriter as IXamlLineInfoConsumer;
bool flag = false;
if (((info != null) && info.HasLineInfo) && ((consumer != null) && consumer.ShouldProvideLineInfo))
{
flag = true;
}
while (xamlReader.Read())
{
if (flag && (info.LineNumber != 0))
{
consumer.SetLineInfo(info.LineNumber, info.LinePosition);
}
xamlWriter.WriteNode(xamlReader);
}
if (closeWriter)
{
xamlWriter.Close();
}
}
private void StartSavingFirstItemInDictionary()
{
_lookingForAKeyOnAMarkupExtensionInADictionaryDepth = _context.CurrentFrame.Depth;
_lookingForAKeyOnAMarkupExtensionInADictionaryNodeList = new XamlNodeList(_xamlNodesWriter.SchemaContext);
_xamlWriterStack.Push(_xamlNodesWriter);
_xamlNodesWriter = _lookingForAKeyOnAMarkupExtensionInADictionaryNodeList.Writer;
}
private void InjectPropertyAndFrameIfNeeded(XamlType elementType, SByte flags)
{
// If we saved the Node stream for the first ME element of a dictionary to
// check if it had a key then process that now.
if (_lookingForAKeyOnAMarkupExtensionInADictionaryDepth == _context.CurrentFrame.Depth)
{
RestoreSavedFirstItemInDictionary();
}
XamlType parentType = _context.CurrentFrame.XamlType;
XamlMember parentProperty = _context.CurrentFrame.Member;
if (parentType != null)
{
if (parentProperty == null)
{
// We have got two consecutive ElementStart records
// We must insert an implicit content property between them
if (_context.CurrentFrame.ContentProperty != null)
{
_context.CurrentFrame.Member = parentProperty = _context.CurrentFrame.ContentProperty;
}
else if (parentType.ContentProperty != null)
{
_context.CurrentFrame.Member = parentProperty = parentType.ContentProperty;
}
else
{
if (parentType.IsCollection || parentType.IsDictionary)
{
_context.CurrentFrame.Member = parentProperty = XamlLanguage.Items;
}
else if (parentType.TypeConverter != null)
{
_context.CurrentFrame.Member = parentProperty = XamlLanguage.Initialization;
}
else
{
throw new XamlParseException(SR.Get(SRID.RecordOutOfOrder, parentType.Name));
}
}
_context.CurrentFrame.Flags = Baml2006ReaderFrameFlags.HasImplicitProperty;
_xamlNodesWriter.WriteStartMember(parentProperty);
// if we are NOT already spooling a template
if (_context.TemplateStartDepth < 0 && _isBinaryProvider)
{
if (parentProperty == BamlSchemaContext.FrameworkTemplateTemplateProperty)
{
// If this is a template then spool the template into a Node List.
_context.TemplateStartDepth = _context.CurrentFrame.Depth;
_xamlTemplateNodeList = new XamlNodeList(_xamlNodesWriter.SchemaContext);
_xamlWriterStack.Push(_xamlNodesWriter);
_xamlNodesWriter = _xamlTemplateNodeList.Writer;
}
}
}
XamlType parentPropertyType = parentProperty.Type;
// Normally an error except for collections
if (parentPropertyType != null && (parentPropertyType.IsCollection || parentPropertyType.IsDictionary) &&
!parentProperty.IsDirective && (flags & ReaderFlags_AddedToTree) == 0)
{
bool emitPreamble = false;
// If the collection property is Readonly then "retrieve" the collection.
if (parentProperty.IsReadOnly)
{
emitPreamble = true;
}
// OR if the Value isn't assignable to the Collection emit the preable.
else if (!elementType.CanAssignTo(parentPropertyType))
{
// UNLESS: the Value is a Markup extension, then it is assumed that
// the ProvidValue type will be AssignableFrom.
if (!elementType.IsMarkupExtension)
{
emitPreamble = true;
}
// EXCEPT: if the BAML said it was Retrived
else if (_context.CurrentFrame.Flags == Baml2006ReaderFrameFlags.HasImplicitProperty)
{
emitPreamble = true;
}
// OR: the ME is Array
else if (elementType == XamlLanguage.Array)
{
emitPreamble = true;
}
}
if (emitPreamble)
{
EmitGoItemsPreamble(parentPropertyType);
}
// We may need to look for an x:Key on the ME in a dictionary.
// so save up the node stream for the whole element definition and check it
// for an x:Key later.
if (!emitPreamble && parentPropertyType.IsDictionary && elementType.IsMarkupExtension)
{
StartSavingFirstItemInDictionary();
}
}
}
}
private void RemoveImplicitFrame()
{
if (_context.CurrentFrame.Flags == Baml2006ReaderFrameFlags.IsImplict)
{
_xamlNodesWriter.WriteEndMember();
_xamlNodesWriter.WriteEndObject();
_context.PopScope();
}
if (_context.CurrentFrame.Flags == Baml2006ReaderFrameFlags.HasImplicitProperty)
{
// If we are encoding a template there is some extra checking.
if (_context.CurrentFrame.Depth == _context.TemplateStartDepth)
{
// If the template is done. Switch back to the previous writer.
// Write the spooled Template Node List as a single Value.
_xamlNodesWriter.Close();
_xamlNodesWriter = _xamlWriterStack.Pop();
_xamlNodesWriter.WriteValue(_xamlTemplateNodeList);
_xamlTemplateNodeList = null;
_context.TemplateStartDepth = -1;
}
_xamlNodesWriter.WriteEndMember();
_context.CurrentFrame.Member = null;
_context.CurrentFrame.Flags = Baml2006ReaderFrameFlags.None;
}
}
private void Process_KeyElementEnd()
{
KeyRecord key = null;
if (_context.PreviousFrame.IsDeferredContent)
{
key = _context.LastKey;
}
else
{
key = _context.PreviousFrame.Key;
}
key.KeyNodeList.Writer.WriteEndObject();
key.KeyNodeList.Writer.Close();
// Revert the writer
_xamlNodesWriter = _xamlWriterStack.Pop();
_context.InsideKeyRecord = false;
_context.PopScope();
}
public abstract void WriteTo(XamlWriter writer);
public static void Transform(XamlReader xamlReader, XamlWriter xamlWriter)
{
Transform(xamlReader, xamlWriter, true);
}
public static void Transform(XamlReader xamlReader, XamlWriter xamlWriter)
{
// arguments are validated by the callee here.
Transform(xamlReader, xamlWriter, true);
}
private void RestoreSavedFirstItemInDictionary()
{
// Restore the real (previous) output node stream.
_xamlNodesWriter.Close();
_xamlNodesWriter = _xamlWriterStack.Pop();
// Check in the saved nodes if the x:Key was set and if it was insert a "GO;SM _items"
if (NodeListHasAKeySetOnTheRoot(_lookingForAKeyOnAMarkupExtensionInADictionaryNodeList.GetReader()))
{
EmitGoItemsPreamble(_context.CurrentFrame.Member.Type);
}
// dump the saved nodes into the real (previous) output node stream.
XamlReader lookAheadNodesReader = _lookingForAKeyOnAMarkupExtensionInADictionaryNodeList.GetReader();
XamlServices.Transform(lookAheadNodesReader, _xamlNodesWriter, false);
_lookingForAKeyOnAMarkupExtensionInADictionaryDepth = -1;
}
private void Initialize(Stream stream,
Baml2006SchemaContext schemaContext,
Baml2006ReaderSettings settings)
{
schemaContext.Settings = settings;
_settings = settings;
_context = new Baml2006ReaderContext(schemaContext);
_xamlMainNodeQueue = new XamlNodeQueue(schemaContext);
_xamlNodesReader = _xamlMainNodeQueue.Reader;
_xamlNodesWriter = _xamlMainNodeQueue.Writer;
_lookingForAKeyOnAMarkupExtensionInADictionaryDepth = -1;
_isBinaryProvider = !settings.ValuesMustBeString;
// Since the reader owns the stream and is responsible for its lifetime
// it can safely hand out shared streams.
if (_settings.OwnsStream)
{
stream = new SharedStream(stream);
}
_binaryReader = new BamlBinaryReader(stream);
_context.TemplateStartDepth = -1;
if (!_settings.IsBamlFragment)
{
Process_Header();
}
}
public static void Transform (XamlReader xamlReader, XamlWriter xamlWriter)
{
Transform (xamlReader, xamlWriter, true);
}
internal XamlReader ReadObject(KeyRecord record)
{
// This means we're at the end of the Deferred Content
// Break out and return null
if (record.ValuePosition == _binaryReader.BaseStream.Length)
{
return null;
}
_binaryReader.BaseStream.Seek(record.ValuePosition, SeekOrigin.Begin);
_context.CurrentKey = _context.KeyList.IndexOf(record);
if (_xamlMainNodeQueue.Count > 0)
{
//
throw new XamlParseException();
}
if (Read_RecordType() != Baml2006RecordType.ElementStart)
{
throw new XamlParseException();
}
XamlWriter oldQueueWriter = _xamlNodesWriter;
// estimates from statistical examiniation of Theme Resource Data.
// small RD entries appear to have about a 2.2 bytes to XamlNode ration.
// larger RD entries are less dense (due to data) at about 4.25.
// Presizing the XamlNodeLists save upto 50% in memory useage for same.
int initialSizeOfNodeList = (record.ValueSize < 800)
? (int)(record.ValueSize / 2.2)
: (int)(record.ValueSize / 4.25);
initialSizeOfNodeList = (initialSizeOfNodeList < 8) ? 8 : initialSizeOfNodeList;
var result = new XamlNodeList(_xamlNodesReader.SchemaContext, initialSizeOfNodeList);
_xamlNodesWriter = result.Writer;
Baml2006ReaderFrame baseFrame = _context.CurrentFrame;
Process_ElementStart();
while (baseFrame != _context.CurrentFrame)
{
Process_OneBamlRecord();
}
_xamlNodesWriter.Close();
_xamlNodesWriter = oldQueueWriter;
return result.GetReader();
}
public static void Save (XamlWriter xamlWriter, object instance)
{
if (xamlWriter == null)
throw new ArgumentNullException ("xamlWriter");
var r = new XamlObjectReader (instance, xamlWriter.SchemaContext);
Transform (r, xamlWriter);
}
private void Process_StaticResourceEnd()
{
XamlWriter writer = GetLastStaticResource().ResourceNodeList.Writer;
writer.WriteEndObject();
writer.Close();
_context.InsideStaticResource = false;
_xamlNodesWriter = _xamlWriterStack.Pop();
_context.PopScope();
}
public ActivityTemplateFactoryBuilderWriter(XamlWriter underlyingWriter, XamlSchemaContext schemaContext)
{
this.schemaContext = schemaContext;
this.underlyingWriter = underlyingWriter;
}
private void Process_StaticResourceStart()
{
XamlType type = BamlSchemaContext.GetXamlType(_binaryReader.ReadInt16());
byte flags = _binaryReader.ReadByte();
//
StaticResource staticResource = new StaticResource(type, BamlSchemaContext);
_context.LastKey.StaticResources.Add(staticResource);
_context.InsideStaticResource = true;
_xamlWriterStack.Push(_xamlNodesWriter);
_xamlNodesWriter = staticResource.ResourceNodeList.Writer;
_context.PushScope();
_context.CurrentFrame.XamlType = type;
}
