public static void GenerateDeserializeWithIDictionaryEmptyCtor()
{
/*
* var map = MapFormatterHelper.Deserialize(ref reader,ref context);
* if (map == null)
* return null;
* context.option.Security.DepthStep(ref reader);
* T t = new T();
* Deserialize(IEnumerable<KeyValuePair<TKey, TValue>> pair,(ICollection<KeyValuePair<TKey, TValue>>)t);
* reader = map.Reader; context = map.Context;
* reader.Seek(map.EndPos);
* context.Depth--;
* return t;
*/
ArrayPack <Expression> ary = new ArrayPack <Expression>(10);
Type t = typeof(T);
LabelTarget returnTarget = Expression.Label(t, "returnLable");
ParameterExpression map = Expression.Variable(typeof(IMapDataSource <,>).MakeGenericType(typeof(object), typeof(object)));
//map = MapFormatterHelper.Deserialize(ref reader,ref context);
ary.Add(Expression.Assign(map, CommonExpressionMeta.Call_MapFormatterHelper_Deserialize(typeof(object), typeof(object))));
//if (map == null)
// goto label;
ary.Add(Expression.IfThen(Expression.Equal(map, Expression.Constant(null, map.Type)), Expression.Return(returnTarget, Expression.Default(t))));
//context.option.Security.DepthStep(ref reader);
ary.Add(CommonExpressionMeta.Call_DeserializeContext_Option_Security_DepthStep);
//T t = new T();
ParameterExpression instance = Expression.Variable(t);
ary.Add(Expression.Assign(instance, Expression.New(t)));
//MapFormatterHelper.FillData(map,(IDictionary)t)
ary.Add(Expression.Call(null, typeof(MapFormatterHelper).GetMethod(nameof(MapFormatterHelper.FillIDictionaryData), BindingFlags.Public | BindingFlags.Static), map, Expression.Convert(instance, typeof(IDictionary))));
//reader = map.Reader; context = map.Context;
ary.Add(CommonExpressionMeta.Block_MapReaderAndContextAssignLocalReaderAndContext(map));
//reader.Seek(map.EndPos);
ary.Add(CommonExpressionMeta.Call_Reader_BufferSeek(Expression.Property(map, nameof(IMapDataSource <int, int> .EndPosition))));
//context.Depth--;
ary.Add(CommonExpressionMeta.Call_DeserializeContext_Depth_DecrementAssign);
//return t;
ary.Add(Expression.Return(returnTarget, instance));
//label default(T)
ary.Add(Expression.Label(returnTarget, instance));
BlockExpression block = Expression.Block(new ParameterExpression[] { map, instance }, ary.GetArray());
Deserialize = Expression.Lambda <Deserialize <T> >(block, CommonExpressionMeta.Par_Reader, CommonExpressionMeta.Par_DeserializeContext).Compile();
}
private static Expression BuildDeserializeCore(Type t, ObjectSerializationInfo serializationInfo)
{
List <Expression> ary = new List <Expression>();
LabelTarget returnTarget = Expression.Label(t, "returnLable");
//int num;
ParameterExpression num = Expression.Variable(typeof(int), "num");
//int for-i;
ParameterExpression forVariable = Expression.Variable(typeof(int), "i");
//context.option.Security.DepthStep(ref reader);
ary.Add(CommonExpressionMeta.Call_DeserializeContext_Option_Security_DepthStep);
//if(reader.TryReadNullWithEnsureBuildInType(BssomType.Array3))
// return default(t);
ary.Add(Expression.IfThen(CommonExpressionMeta.Call_Reader_TryReadNullWithEnsureBuildInType(BssomType.Array3),
Expression.Return(returnTarget, Expression.Default(t))));
//T t = new T();
ParameterExpression instance = Expression.Parameter(t, "instance");
if (serializationInfo.IsDefaultNoArgsCtor)
{
ary.Add(Expression.Assign(instance, Expression.New(t)));
}
else
{
ParameterInfo[] parInfos = serializationInfo.BestmatchConstructor.GetParameters();
Expression[] pars = new Expression[parInfos.Length];
if (serializationInfo.ConstructorParametersIsDefaultValue)
{
for (int i = 0; i < parInfos.Length; i++)
{
pars[i] = Expression.Default(parInfos[i].ParameterType);
}
ary.Add(Expression.Assign(instance, Expression.New(serializationInfo.BestmatchConstructor, pars)));
}
else
{
object[] cps = serializationInfo.ConstructorParameters;
for (int i = 0; i < parInfos.Length; i++)
{
pars[i] = Expression.Constant(cps[i], parInfos[i].ParameterType);
}
ary.Add(Expression.Assign(instance, Expression.New(serializationInfo.BestmatchConstructor, pars)));
}
}
//reader.SkipVariableNumber()
ary.Add(CommonExpressionMeta.Call_Reader_SkipVariableNumber);
//num = reader.ReadVariableNumber()
ary.Add(Expression.Assign(num, CommonExpressionMeta.Call_Reader_ReadVariableNumber));
//i = 0;
ary.Add(Expression.Assign(forVariable, Expression.Constant(0)));
var members = serializationInfo.SerializeMemberInfos;
if (members.Length > 0)
{
//reader.Buffer.Seek(offsetSegment, Current)
ary.Add(CommonExpressionMeta.Call_Reader_BufferSeek(Expression.Convert(Expression.Multiply(num, Expression.Constant(BssomBinaryPrimitives.FixUInt32NumberSize)), typeof(Int64)), BssomSeekOrgin.Current));
//switch(i)
// case 0: instance.Key0 = readValue();
// case 3: instance.Key1 = readValue();
// case 5: instance.Key2 = readValue();
// default: skipObj();
FieldInfo memFormatters = serializationInfo.StoreMemberFormatterInstances();
SwitchCase[] switchCases = new SwitchCase[members.Length];
for (int i = 0; i < members.Length; i++)
{
switchCases[i] = Expression.SwitchCase(SpecialCodeGenExpression.ReadValues(members[i], instance, memFormatters), Expression.Constant(members[i].KeyIndex));
}
Expression content = Expression.Switch(
typeof(void),
forVariable,
CommonExpressionMeta.Call_Reader_SkipObject,
null,
switchCases
);
ary.Add(For(forVariable, Expression.LessThan(forVariable, num), Expression.Assign(forVariable, Expression.Add(forVariable, Expression.Constant(1))), content));
}
//context.Depth--;
ary.Add(CommonExpressionMeta.Call_DeserializeContext_Depth_DecrementAssign);
ary.Add(Expression.Return(returnTarget, instance));
ary.Add(Expression.Label(returnTarget, instance));
return(Expression.Block(new ParameterExpression[] { instance, num, forVariable, }, ary));
}
