public void BuildTraveller()
{
if (_classBuilder.IsSealed) throw new InvalidOperationException("Class builder is sealed");
var target = _typeProvider.GetOrCreate(_type);
var members = _dtContext.Members;
var factoryArgument = new MethodArgILCodeVariable(1, members.VisitArgsFactoryType);
var childTravellers = new Dictionary<Type, ChildTravellerInfo>();
var argFields = new Dictionary<SerializableProperty, FieldInfo>();
var travellerIndex = 0;
foreach (var property in target.Properties) {
var argField = _classBuilder.DefinePrivateField("_arg" + property.Ref.Name, members.VisitArgsType);
var visitArgsCode = new CallMethodILCode(factoryArgument, members.ConstructVisitArgsMethod, property.Ref.Name);
_constructorBuilder.IL.SetField(argField, visitArgsCode);
argFields.Add(property, argField);
Type[] types;
if (!ReflectionAnalyzer.TryGetComplexTypes(property.Ext, out types)) continue;
foreach (var type in types) {
if (childTravellers.ContainsKey(type)) continue;
var dynamicTraveller = _dtContext.Get(type);
var interfaceType = typeof (IGraphTraveller<>).MakeGenericType(type);
var fieldBuilder = _classBuilder.DefinePrivateField(string.Concat("_traveller", type.Name, ++travellerIndex), interfaceType);
childTravellers.Add(type, new ChildTravellerInfo {
Field = fieldBuilder,
TravelWriteMethod = dynamicTraveller.TravelWriteMethod,
TravelReadMethod = dynamicTraveller.TravelReadMethod
});
var getFactoryCode = new CallMethodILCode(factoryArgument, members.ConstructVisitArgsWithTypeMethod, type);
var callConstructorCode = new CallConstructorILCode(dynamicTraveller.Constructor, getFactoryCode);
_constructorBuilder.IL.SetField(fieldBuilder, callConstructorCode);
//_constructorBuilder.IL.SetField(fieldBuilder, dynamicTraveller.Constructor);
}
}
_constructorBuilder.IL.Return();
var context = new TravellerContext(childTravellers, argFields);
BuildWriteMethods(target, context);
BuildReadMethods(target, context);
_classBuilder.Seal();
_dynamicTraveller.Complete(_classBuilder.Type);
}
private ILCodeParameter GenerateCollectionContent(ExtendedType target, string refName)
{
var collectionMembers = new CollectionMembers(target);
var isValueType = collectionMembers.ElementType.IsValueType;
var collectionLocal = _il.DeclareLocal("collection", collectionMembers.VariableType);
_il.Construct(collectionMembers.Constructor);
_il.Cast(collectionMembers.VariableType);
_il.Var.Set(collectionLocal);
var valueLocal = DeclareCollectionItemLocal("cv", collectionMembers.ElementType); ;
if (collectionMembers.ElementTypeExt.IsValueOrNullableOfValue()) {
_il.Snippets.WhileLoop(il => { // While condition
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisitValue[collectionMembers.ElementType], Members.VisitArgsCollectionItem, valueLocal);
var valueNotFoundLabel = _il.DefineLabel();
_il.TransferLongIfFalse(valueNotFoundLabel);
if (isValueType) {
_il.Snippets.InvokeMethod(valueLocal, Members.Nullable[collectionMembers.ElementType].GetHasValue);
}
else {
_il.Snippets.AreEqual(valueLocal, ILCodeParameter.Null);
_il.Negate();
}
var isNullLabel = _il.DefineLabel();
_il.TransferLong(isNullLabel);
_il.MarkLabel(valueNotFoundLabel);
_il.LoadValue(0);
_il.MarkLabel(isNullLabel);
}, il => {
_il.Var.Load(collectionLocal);
GenerateLoadParamValueCode(valueLocal);
_il.CallVirt(collectionMembers.Add);
});
}
else if (collectionMembers.ElementTypeExt.Class == TypeClass.Dictionary) {
_il.Snippets.WhileLoop(il => { // Condition
var callTryVisit = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsDictionaryInCollection);
_il.Snippets.AreEqual(callTryVisit, (int)ValueState.Found);
}, il => {
var contentParam = GenerateDictionaryEnumerateCode(collectionMembers.ElementType, refName);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsDictionaryInCollection);
_il.Snippets.InvokeMethod(collectionLocal, collectionMembers.Add, contentParam);
});
}
else if (collectionMembers.ElementTypeExt.Class == TypeClass.Collection) {
_il.Snippets.WhileLoop(il => { // Condition
var callTryVisit = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsCollectionInCollection);
_il.Snippets.AreEqual(callTryVisit, (int)ValueState.Found);
}, il => {
var contentParam = GenerateCollectionContent(collectionMembers.ElementTypeExt, refName);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsCollectionInCollection);
_il.Snippets.InvokeMethod(collectionLocal, collectionMembers.Add, contentParam);
});
}
else {
_il.Snippets.WhileLoop(il => {
var callTryVisit = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsCollectionItem);
_il.Snippets.AreEqual(callTryVisit, (int)ValueState.Found);
}, il => {
GenerateCreateAndChildCallCode(valueLocal);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsCollectionItem);
_il.Snippets.InvokeMethod(collectionLocal, collectionMembers.Add, valueLocal);
});
}
if (target.Ref.IsArray)
return new CallMethodILCode(collectionMembers.ToArray, collectionLocal);
return collectionLocal;
}
private LocalILCodeVariable GenerateDictionaryEnumerateCode(Type type, string refName)
{
var extType = _il.TypeCache.Extend(type);
var dictionaryMembers = new DictionaryMembers(extType);
var local = _il.DeclareLocal("dictionary", dictionaryMembers.VariableType);
_il.Construct(dictionaryMembers.Constructor);
_il.Var.Set(local);
NullableMembers keyNullableMembers;
ILCodeParameter keyParam;
var conditionLabel = _il.DefineLabel();
var bodyLabel = _il.DefineLabel();
var keyType = Members.Nullable.TryGetValue(dictionaryMembers.KeyType, out keyNullableMembers) ? keyNullableMembers.NullableType : dictionaryMembers.KeyType;
var keyTypeExt = _il.TypeCache.Extend(keyType);
// First of all, transfer to the condition part
_il.TransferLong(conditionLabel);
// Mark that we enter the body of the loop
_il.MarkLabel(bodyLabel);
if (keyTypeExt.IsValueOrNullableOfValue()) {
keyParam = _il.DeclareLocal("ck", keyType);
}
else if (keyTypeExt.Class == TypeClass.Dictionary) {
keyParam = GenerateDictionaryEnumerateCode(keyType, refName);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsDictionaryInDictionaryKey);
}
else if (keyTypeExt.Class == TypeClass.Collection) {
keyParam = GenerateCollectionContent(keyTypeExt, refName);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsCollectionInDictionaryKey);
}
else {
var keyLocal = _il.DeclareLocal("ck", keyType);
GenerateCreateAndChildCallCode(keyLocal);
keyParam = keyLocal;
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsDictionaryKey);
}
var throwExceptionLabel = _il.DefineLabel();
ILCodeParameter valueParam;
NullableMembers valueNullableMembers;
var hasNullableMembers = Members.Nullable.TryGetValue(dictionaryMembers.ValueType, out valueNullableMembers);
var valueType = dictionaryMembers.ValueType;
var extValueType = valueType.Extend();
if (extValueType.IsValueOrNullableOfValue()) {
var loadTrueLabel = _il.DefineLabel();
var checkIfErrorLabel = _il.DefineLabel();
valueParam = _il.DeclareLocal("cv", hasNullableMembers ? valueNullableMembers.NullableType : dictionaryMembers.ValueType);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisitValue[dictionaryMembers.ValueType], Members.VisitArgsDictionaryValue, valueParam);
_il.TransferLongIfFalse(loadTrueLabel);
if (hasNullableMembers) {
_il.Snippets.InvokeMethod(valueParam, valueNullableMembers.GetHasValue);
_il.Negate();
}
else {
_il.Snippets.AreEqual(valueParam, null);
}
_il.TransferLong(checkIfErrorLabel);
_il.MarkLabel(loadTrueLabel);
_il.LoadValue(true);
_il.MarkLabel(checkIfErrorLabel);
_il.TransferLongIfTrue(throwExceptionLabel);
}
else if (extValueType.Class == TypeClass.Dictionary) {
var callTryVisitValue = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsDictionaryInDictionaryValue);
_il.Snippets.AreEqual(callTryVisitValue, (int)ValueState.Found);
_il.TransferLongIfFalse(throwExceptionLabel);
valueParam = GenerateDictionaryEnumerateCode(valueType, refName);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsDictionaryInDictionaryValue);
}
else if (extValueType.Class == TypeClass.Collection) {
var callTryVisit = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsCollectionInDictionaryValue);
_il.Snippets.AreEqual(callTryVisit, (int)ValueState.Found);
_il.TransferLongIfFalse(throwExceptionLabel);
valueParam = GenerateCollectionContent(_il.TypeCache.Extend(valueType), refName);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsCollectionInDictionaryValue);
}
else {
var callTryVisit = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsDictionaryValue);
_il.Snippets.AreEqual(callTryVisit, (int)ValueState.Found);
_il.TransferLongIfFalse(throwExceptionLabel);
var valueLocal = _il.DeclareLocal("cv", hasNullableMembers ? valueNullableMembers.NullableType : dictionaryMembers.ValueType);
GenerateCreateAndChildCallCode(valueLocal);
valueParam = valueLocal;
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, Members.VisitArgsDictionaryValue);
}
_il.Var.Load(local);
GenerateLoadParamValueCode(keyParam);
GenerateLoadParamValueCode(valueParam);
_il.CallVirt(dictionaryMembers.Add);
_il.TransferLong(conditionLabel);
_il.MarkLabel(throwExceptionLabel);
_il.Snippets.Throw(new CallMethodILCode(Members.ExceptionNoDictionaryValue, refName));
_il.MarkLabel(conditionLabel);
if (keyTypeExt.IsValueOrNullableOfValue()) {
var loadZeroLabel = _il.DefineLabel();
var checkConditionLabel = _il.DefineLabel();
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisitValue[keyType], Members.VisitArgsDictionaryKey, keyParam);
_il.TransferLongIfFalse(loadZeroLabel);
if (keyType.IsValueType) {
_il.Snippets.InvokeMethod(keyParam, Members.Nullable[keyType].GetHasValue);
_il.TransferLong(checkConditionLabel);
}
else {
_il.Snippets.AreEqual(keyParam, ILCodeParameter.Null);
_il.Negate();
_il.TransferLong(checkConditionLabel);
}
_il.MarkLabel(loadZeroLabel);
_il.LoadValue(false);
_il.MarkLabel(checkConditionLabel);
_il.TransferLongIfTrue(bodyLabel);
}
else if (keyTypeExt.Class == TypeClass.Dictionary) {
var callTryVisitKey = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsDictionaryInDictionaryKey);
_il.Snippets.AreEqual(callTryVisitKey, (int)ValueState.Found);
_il.TransferLongIfTrue(bodyLabel);
}
else if (keyTypeExt.Class == TypeClass.Collection) {
var callTryVisitKey = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsCollectionInDictionaryKey);
_il.Snippets.AreEqual(callTryVisitKey, (int)ValueState.Found);
_il.TransferLongIfTrue(bodyLabel);
}
else {
var callTryVisit = new CallMethodILCode(_visitorVariable, Members.VisitorTryVisit, Members.VisitArgsDictionaryKey);
_il.Snippets.AreEqual(callTryVisit, (int)ValueState.Found);
_il.TransferLongIfTrue(bodyLabel);
}
return local;
}
public static ILCodeParameter Of(CallMethodILCode code)
{
return new ILCodeParameterDelegatable(code.ReturnType, il => il.Generate(code));
}