public void BuildTravelReadMethod()
{
var graphArgument = new MethodArgILCodeVariable(2, _target.Type);
foreach (var property in _target.Properties) {
GeneratePropertyCode(graphArgument, property);
}
_il.Return();
}
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 void GeneratePropertyCode(MethodArgILCodeVariable graphVariable, SerializableProperty target)
{
var extPropertyType = target.Ext;
var argsField = _context.GetArgsField(target);
var argsFieldVariable = _il.Var.Field(_il.Var.This(), argsField);
if (extPropertyType.IsValueOrNullableOfValue()) {
var isNullable = extPropertyType.Class == TypeClass.Nullable;
var isEnum = extPropertyType.IsEnum();
var isValueType = extPropertyType.Ref.IsValueType;
var mediatorPropertyType = isEnum ? extPropertyType.GetUnderlyingEnumType() : extPropertyType.Ref;
var valueType = !isNullable && isValueType ? Members.Nullable[mediatorPropertyType].NullableType : mediatorPropertyType;
var valueLocal = _il.DeclareLocal("value", valueType);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisitValue[valueType], argsFieldVariable, valueLocal);
if (isValueType && !isNullable) {
var labelValueNotFound = _il.DefineLabel();
_il.TransferLongIfFalse(labelValueNotFound);
_il.Snippets.InvokeMethod(valueLocal, Members.Nullable[mediatorPropertyType].GetHasValue);
_il.Negate();
var nullableHasValueLabel = _il.DefineLabel();
_il.TransferLong(nullableHasValueLabel);
_il.MarkLabel(labelValueNotFound);
_il.LoadValue(true);
_il.MarkLabel(nullableHasValueLabel);
}
else {
_il.Negate();
}
var skipSetValueLabel = _il.DefineLabel();
_il.TransferLongIfTrue(skipSetValueLabel);
var valueToAdd = (isValueType && !isNullable)
? new CallMethodILCode(valueLocal, Members.Nullable[mediatorPropertyType].GetValue)
: (ILCodeParameter)valueLocal;
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, valueToAdd);
_il.MarkLabel(skipSetValueLabel);
}
else if (extPropertyType.Class == TypeClass.Dictionary) {
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisit, argsFieldVariable);
var stateLocal = _il.DeclareLocal("state", typeof(ValueState));
_il.Var.Set(stateLocal);
_il.Snippets.AreEqual(stateLocal, (int)ValueState.NotFound);
var endLabel = _il.DefineLabel();
_il.TransferLongIfTrue(endLabel);
_il.Snippets.AreEqual(stateLocal, (int)ValueState.Found);
var nullLabel = _il.DefineLabel();
_il.TransferLongIfFalse(nullLabel);
var dictionaryLocal = GenerateDictionaryEnumerateCode(target.Ref.PropertyType, target.Ref.Name);
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, dictionaryLocal.Cast(target.Ref.PropertyType));
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, argsFieldVariable);
_il.TransferLong(endLabel);
_il.MarkLabel(nullLabel);
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, null);
_il.MarkLabel(endLabel);
}
else if (extPropertyType.Class == TypeClass.Collection) {
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisit, argsFieldVariable);
var stateLocal = _il.DeclareLocal("state", typeof(ValueState));
_il.Var.Set(stateLocal);
_il.Snippets.AreEqual(stateLocal, (int)ValueState.NotFound);
var endLabel = _il.DefineLabel();
_il.TransferLongIfTrue(endLabel);
_il.Snippets.AreEqual(stateLocal, (int)ValueState.Found);
var nullLabel = _il.DefineLabel();
_il.TransferLongIfFalse(nullLabel);
var collectionParam = GenerateCollectionContent(extPropertyType, target.Ref.Name);
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, collectionParam);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, argsFieldVariable);
_il.TransferLong(endLabel);
_il.MarkLabel(nullLabel);
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, null);
_il.MarkLabel(endLabel);
}
else {
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorTryVisit, argsFieldVariable);
var stateLocal = _il.DeclareLocal("state", typeof(ValueState));
_il.Var.Set(stateLocal);
_il.IfNotEqual(stateLocal, (int)ValueState.NotFound)
.Then(() => {
_il.IfEqual(stateLocal, (int)ValueState.Found)
.Then(() => {
var singleLocal = _il.DeclareLocal("single", extPropertyType.Ref);
GenerateCreateAndChildCallCode(singleLocal);
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, singleLocal);
_il.Snippets.InvokeMethod(_visitorVariable, Members.VisitorLeave, argsFieldVariable);
}).Else(() => {
_il.Snippets.SetPropertyValue(graphVariable, target.Ref, null);
}).End();
}).End();
}
}
