in src/dotnet-svcutil/lib/src/FrameworkFork/Microsoft.Xml/Xml/Serialization/XmlSerializationWriterILGen.cs [355:552]
private string GenerateMembersElement(XmlMembersMapping xmlMembersMapping)
{
ElementAccessor element = xmlMembersMapping.Accessor;
MembersMapping mapping = (MembersMapping)element.Mapping;
bool hasWrapperElement = mapping.HasWrapperElement;
bool writeAccessors = mapping.WriteAccessors;
string methodName = NextMethodName(element.Name);
ilg = new CodeGenerator(this.typeBuilder);
ilg.BeginMethod(
typeof(void),
methodName,
new Type[] { typeof(object[]) },
new string[] { "p" },
CodeGenerator.PublicMethodAttributes
);
MethodInfo XmlSerializationWriter_WriteStartDocument = typeof(XmlSerializationWriter).GetMethod(
"WriteStartDocument",
CodeGenerator.InstanceBindingFlags,
null,
CodeGenerator.EmptyTypeArray,
null
);
ilg.Ldarg(0);
ilg.Call(XmlSerializationWriter_WriteStartDocument);
MethodInfo XmlSerializationWriter_TopLevelElement = typeof(XmlSerializationWriter).GetMethod(
"TopLevelElement",
CodeGenerator.InstanceBindingFlags,
null,
CodeGenerator.EmptyTypeArray,
null
);
ilg.Ldarg(0);
ilg.Call(XmlSerializationWriter_TopLevelElement);
// in the top-level method add check for the parameters length,
// because visual basic does not have a concept of an <out> parameter it uses <ByRef> instead
// so sometime we think that we have more parameters then supplied
LocalBuilder pLengthLoc = ilg.DeclareLocal(typeof(int), "pLength");
ilg.Ldarg("p");
ilg.Ldlen();
ilg.Stloc(pLengthLoc);
if (hasWrapperElement)
{
WriteStartElement(element.Name, (element.Form == XmlSchemaForm.Qualified ? element.Namespace : ""), false);
int xmlnsMember = FindXmlnsIndex(mapping.Members);
if (xmlnsMember >= 0)
{
MemberMapping member = mapping.Members[xmlnsMember];
string source = "((" + typeof(XmlSerializerNamespaces).FullName + ")p[" + xmlnsMember.ToString() + "])";
ilg.Ldloc(pLengthLoc);
ilg.Ldc(xmlnsMember);
ilg.If(Cmp.GreaterThan);
WriteNamespaces(source);
ilg.EndIf();
}
for (int i = 0; i < mapping.Members.Length; i++)
{
MemberMapping member = mapping.Members[i];
if (member.Attribute != null && !member.Ignore)
{
SourceInfo source = new SourceInfo("p[" + i.ToString() + "]", null, null, pLengthLoc.LocalType.GetElementType(), ilg);
SourceInfo specifiedSource = null;
int specifiedPosition = 0;
if (member.CheckSpecified != SpecifiedAccessor.None)
{
string memberNameSpecified = member.Name + "Specified";
for (int j = 0; j < mapping.Members.Length; j++)
{
if (mapping.Members[j].Name == memberNameSpecified)
{
specifiedSource = new SourceInfo("((bool)p[" + j.ToString() + "])", null, null, typeof(bool), ilg);
specifiedPosition = j;
break;
}
}
}
ilg.Ldloc(pLengthLoc);
ilg.Ldc(i);
ilg.If(Cmp.GreaterThan);
if (specifiedSource != null)
{
Label labelTrue = ilg.DefineLabel();
Label labelEnd = ilg.DefineLabel();
ilg.Ldloc(pLengthLoc);
ilg.Ldc(specifiedPosition);
ilg.Ble(labelTrue);
specifiedSource.Load(typeof(bool));
ilg.Br_S(labelEnd);
ilg.MarkLabel(labelTrue);
ilg.Ldc(true);
ilg.MarkLabel(labelEnd);
ilg.If();
}
WriteMember(source, member.Attribute, member.TypeDesc, "p");
if (specifiedSource != null)
{
ilg.EndIf();
}
ilg.EndIf();
}
}
}
for (int i = 0; i < mapping.Members.Length; i++)
{
MemberMapping member = mapping.Members[i];
if (member.Xmlns != null)
continue;
if (member.Ignore)
continue;
SourceInfo specifiedSource = null;
int specifiedPosition = 0;
if (member.CheckSpecified != SpecifiedAccessor.None)
{
string memberNameSpecified = member.Name + "Specified";
for (int j = 0; j < mapping.Members.Length; j++)
{
if (mapping.Members[j].Name == memberNameSpecified)
{
specifiedSource = new SourceInfo("((bool)p[" + j.ToString() + "])", null, null, typeof(bool), ilg);
specifiedPosition = j;
break;
}
}
}
ilg.Ldloc(pLengthLoc);
ilg.Ldc(i);
ilg.If(Cmp.GreaterThan);
if (specifiedSource != null)
{
Label labelTrue = ilg.DefineLabel();
Label labelEnd = ilg.DefineLabel();
ilg.Ldloc(pLengthLoc);
ilg.Ldc(specifiedPosition);
ilg.Ble(labelTrue);
specifiedSource.Load(typeof(bool));
ilg.Br_S(labelEnd);
ilg.MarkLabel(labelTrue);
ilg.Ldc(true);
ilg.MarkLabel(labelEnd);
ilg.If();
}
string source = "p[" + i.ToString() + "]";
string enumSource = null;
if (member.ChoiceIdentifier != null)
{
for (int j = 0; j < mapping.Members.Length; j++)
{
if (mapping.Members[j].Name == member.ChoiceIdentifier.MemberName)
{
enumSource = "((" + mapping.Members[j].TypeDesc.CSharpName + ")p[" + j.ToString() + "]" + ")";
break;
}
}
#if DEBUG
// use exception in the place of Debug.Assert to avoid throwing asserts from a server process such as aspnet_ewp.exe
if (enumSource == null) throw new InvalidOperationException(string.Format(ResXml.XmlInternalErrorDetails, "Can not find " + member.ChoiceIdentifier.MemberName + " in the members mapping."));
#endif
}
// override writeAccessors choice when we've written a wrapper element
WriteMember(new SourceInfo(source, source, null, null, ilg), enumSource, member.ElementsSortedByDerivation, member.Text, member.ChoiceIdentifier, member.TypeDesc, writeAccessors || hasWrapperElement);
if (specifiedSource != null)
{
ilg.EndIf();
}
ilg.EndIf();
}
if (hasWrapperElement)
{
WriteEndElement();
}
ilg.EndMethod();
return methodName;
}