// For dynamic activity property, we needs to collect the source location of
// its default value when the value is inlined.
private KeyValuePair <string, SourceLocation> TransformDynamicActivityProperty(
XamlReader reader,
XamlObjectWriter objectWriter,
SourceTextScanner sourceTextScanner)
{
// (Number of SM -Number of EM) since SM DAP.Name is read.
// SO DAP ---nameReadingLevel=0
// SM NAME ---nameReadingLevel=1
// SO String ---nameReadingLevel=1
// SM Initialize ---nameReadingLevel=2
// VA StringValue ---nameReadingLevel=2
// EM ---nameReadingLevel=1
// SO ---nameReadingLevel=1
// EM ---nameReadingLevel=0
// EO ---nameReadingLevel=0
int nameReadingLevel = 0;
IXamlLineInfo lineInfo = (IXamlLineInfo)reader;
SourceLocation defaultValueLocation = null;
string propertyName = null;
while (reader.Read())
{
switch (reader.NodeType)
{
case XamlNodeType.StartMember:
if (nameReadingLevel > 0 ||
reader.Member == this.dynamicActivityPropertyNameMember)
{
++nameReadingLevel;
}
else if (reader.Member == this.dynamicActivityPropertyValueMember)
{
LineColumnPair startPoint = new LineColumnPair(lineInfo.LineNumber, lineInfo.LinePosition);
defaultValueLocation = GetInlineAttributeValueLocation(startPoint, sourceTextScanner);
}
break;
case XamlNodeType.EndMember:
if (nameReadingLevel > 0)
{
--nameReadingLevel;
}
break;
case XamlNodeType.Value:
if (nameReadingLevel > 0)
{
propertyName = reader.Value as string;
}
break;
}
objectWriter.WriteNode(reader);
}
if (propertyName != null && defaultValueLocation != null)
{
return(new KeyValuePair <string, SourceLocation>(propertyName, defaultValueLocation));
}
return(new KeyValuePair <string, SourceLocation>());
}
private object TransformAndGetPropertySourceLocation(XamlReader reader, SourceTextScanner sourceTextScanner, SourceLocationFoundCallback sourceLocationFoundCallback)
{
// <property name, value's start location>
Dictionary <string, SourceLocation> propertyValueLocationMapping = new Dictionary <string, SourceLocation>();
object deserializedObject = null;
object earlyResult = null;
UsingXamlWriter(
new XamlObjectWriter(reader.SchemaContext),
delegate(XamlObjectWriter objectWriter)
{
if (this.XamlSchemaContext.HasLocalAssembly)
{
this.CopyNamespacesAndAddLocalAssembly(reader, objectWriter);
}
if (!(reader is IXamlLineInfo))
{
XamlServices.Transform(reader, objectWriter);
earlyResult = objectWriter.Result;
return;
}
XamlType dynamicActivityPropertyType = this.XamlSchemaContext.GetXamlType(typeof(DynamicActivityProperty));
while (reader.Read())
{
// read SubTree will moves the reader pointed to
// element after its EO. So, we need to use a while
while (!reader.IsEof && reader.NodeType == XamlNodeType.StartObject &&
dynamicActivityPropertyType == reader.Type)
{
KeyValuePair <string, SourceLocation> nameSourceLocation = this.TransformDynamicActivityProperty(reader.ReadSubtree(), objectWriter, sourceTextScanner);
if (nameSourceLocation.Key != null && nameSourceLocation.Value != null && !propertyValueLocationMapping.ContainsKey(nameSourceLocation.Key))
{
propertyValueLocationMapping.Add(nameSourceLocation.Key, nameSourceLocation.Value);
}
}
if (!reader.IsEof)
{
objectWriter.WriteNode(reader);
}
}
deserializedObject = objectWriter.Result;
});
if (earlyResult != null)
{
return(earlyResult);
}
ActivityBuilder activityBuilder = deserializedObject as ActivityBuilder;
if (activityBuilder == null)
{
return(deserializedObject);
}
foreach (KeyValuePair <string, SourceLocation> propertyValueLocation in propertyValueLocationMapping)
{
string propertyName = propertyValueLocation.Key;
SourceLocation propertyLocation = propertyValueLocation.Value;
if (!activityBuilder.Properties.Contains(propertyName))
{
SharedFx.Assert(string.Format(CultureInfo.CurrentCulture, "no such property:{0}", propertyName));
continue;
}
DynamicActivityProperty property = activityBuilder.Properties[propertyName];
if (property == null || property.Value == null)
{
SharedFx.Assert(string.Format(CultureInfo.CurrentCulture, "no such property value:{0}", propertyName));
continue;
}
object expression = (property.Value is Argument) ? ((Argument)property.Value).Expression : null;
if (expression != null)
{
sourceLocationFoundCallback(expression, propertyLocation);
}
else
{
sourceLocationFoundCallback(property.Value, propertyLocation);
}
}
return(deserializedObject);
}
// there are two kind of attribute:
// 1) in lined : argument="some value"
// 2) <argument>
// <Expression ....../>
// </argument>
// here, for (1) return the source location of "some value".
// for (2) return null
private static SourceLocation GetInlineAttributeValueLocation(LineColumnPair startPoint, SourceTextScanner sourceTextScanner)
{
const char SingleQuote = '\'';
const char DoubleQuote = '"';
const char StartAngleBracket = '<';
Tuple <LineColumnPair, char> start = sourceTextScanner.SearchCharAfter(startPoint, SingleQuote, DoubleQuote, StartAngleBracket);
if (start == null)
{
return(null);
}
if (start.Item2 == StartAngleBracket)
{
return(null);
}
Tuple <LineColumnPair, char> end = sourceTextScanner.SearchCharAfter(start.Item1, start.Item2);
if (end == null)
{
SharedFx.Assert("end of SourceLocation is not found");
return(null);
}
return(new SourceLocation(null, start.Item1.LineNumber, start.Item1.ColumnNumber, end.Item1.LineNumber, end.Item1.ColumnNumber));
}