public void Emit(FieldInfo field, ref EmitHelper serializerEmit, ref EmitHelper deserializeEmit)
{
var fieldType = field.FieldType;
var writeIntMethod = typeof(BinaryWriter).GetMethod("Write", new[] { typeof(int) });
var dictNotNullLabel = serializerEmit.DefineLabel();
var dictNullLabel = serializerEmit.DefineLabel();
var keyType = fieldType.GetGenericArguments()[0];
if (!keyType.IsPrimitive && !(keyType == typeof(DateTime)) && !(keyType == typeof(string)) && !(keyType == typeof(decimal)))
{
throw new ArgumentException("Key type does not supported: " + keyType);
}
var valueType = fieldType.GetGenericArguments()[1];
if (!valueType.IsPrimitive && !(valueType == typeof(DateTime)) && !(valueType == typeof(string)) && !(valueType == typeof(decimal)))
{
throw new ArgumentException("Value type does not supported: " + valueType);
}
var dictLocal = serializerEmit.DeclareLocal(fieldType);
//construct ICollection<elementType> to call getCount method
var keyValuePairType = typeof(KeyValuePair<,>);
keyValuePairType = keyValuePairType.MakeGenericType(keyType, valueType);
var getKeyMethod = keyValuePairType.GetMethod("get_Key");
var getValueMethod = keyValuePairType.GetMethod("get_Value");
var icollectionType = typeof(ICollection<>).MakeGenericType(keyValuePairType);
var getCountMethod = icollectionType.GetMethod("get_Count");
var enumeratorType = typeof(IEnumerator<>).MakeGenericType(keyValuePairType);
var getEmumeratorMethod = typeof(IEnumerable<>).MakeGenericType(keyValuePairType).GetMethod("GetEnumerator");
var getCurrentElementMethod = enumeratorType.GetMethod("get_Current");
var keyValuePairLocal = serializerEmit.DeclareLocal(keyValuePairType);
var enumeratorLocal = serializerEmit.DeclareLocal(enumeratorType);
var startWhileLocal = serializerEmit.DefineLabel();
var startWhileBodyLocal = serializerEmit.DefineLabel();
var valueLocal = serializerEmit.DeclareLocal(valueType);
var endFinallyLabel = serializerEmit.DefineLabel();
serializerEmit
.ldarg_0
.ldfld(field)
.stloc(dictLocal)
.ldloc(dictLocal)
.brtrue(dictNotNullLabel)
.ldarg_1
.ldc_i4_m1
.call(writeIntMethod)
.br(dictNullLabel)
.MarkLabel(dictNotNullLabel);
var exTryCatchFinallyLabel = serializerEmit.BeginExceptionBlock();
serializerEmit
.ldloc(dictLocal)
.call(getEmumeratorMethod)
.stloc(enumeratorLocal)
.ldarg_1
.ldloc(dictLocal)
.call(getCountMethod)
.call(writeIntMethod)
.br(startWhileLocal)
.MarkLabel(startWhileBodyLocal)
.ldloc(enumeratorLocal)
.call(getCurrentElementMethod)
.stloc(keyValuePairLocal)
.ldarg_1
.ldloca(keyValuePairLocal)
.call(getKeyMethod)
.call(typeof(BinaryWriter).GetMethod("Write", new[] { keyType }));
if (valueType == typeof(string))
{
var valueLocalNotNullLabel = serializerEmit.DefineLabel();
var valueLocalNullLabel = serializerEmit.DefineLabel();
serializerEmit
.ldloca(keyValuePairLocal)
.call(getValueMethod)
.stloc(valueLocal)
.ldloc(valueLocal)
.brtrue(valueLocalNotNullLabel)
.ldarg_1
.ldc_i4_m1
.call(typeof(BinaryWriter).GetMethod("Write", new[] { typeof(int) }))
.br(valueLocalNullLabel)
.MarkLabel(valueLocalNotNullLabel)
.ldarg_1
.ldloc(valueLocal)
.call(typeof(string).GetMethod("get_Length"))
.call(typeof(BinaryWriter).GetMethod("Write", new[] { typeof(int) }))
.ldarg_1
.ldloc(valueLocal)
.call(typeof(BinaryWriter).GetMethod("Write", new[] { typeof(string) }))
.MarkLabel(valueLocalNullLabel);
}
else if (valueType.IsPrimitive)
{
serializerEmit
.ldarg_1
.ldloca(keyValuePairLocal)
.call(getValueMethod)
.call(typeof(BinaryWriter).GetMethod("Write", new[] { valueType }));
}
serializerEmit
.MarkLabel(startWhileLocal)
.ldloc(enumeratorLocal)
.call(typeof(IEnumerator).GetMethod("MoveNext"))
.brtrue(startWhileBodyLocal)
.leave(exTryCatchFinallyLabel)
.BeginFinallyBlock()
.ldloc(enumeratorLocal)
.brfalse(endFinallyLabel)
.ldloc(enumeratorLocal)
.call(typeof(IDisposable).GetMethod("Dispose"))
.MarkLabel(endFinallyLabel)
.EndExceptionBlock()
.MarkLabel(dictNullLabel);
var readIntMethod = typeof(BinaryReader).GetMethod("ReadInt32");
var addElementMethod = typeof(IDictionary<,>).MakeGenericType(keyType, valueType).GetMethod("Add", new[] { keyType, valueType });
var dictNotNullLabel2 = deserializeEmit.DefineLabel();
var dictNullLabel2 = deserializeEmit.DefineLabel();
var deserializeDictLocal = deserializeEmit.DeclareLocal(fieldType);
var len = deserializeEmit.DeclareLocal(typeof(int));
var i = deserializeEmit.DeclareLocal(typeof(int));
var beginForLabel = deserializeEmit.DefineLabel();
var beginForBodyLabel = deserializeEmit.DefineLabel();
var dictType = fieldType.IsInterface ? typeof(Dictionary<,>).MakeGenericType(keyType, valueType) : fieldType;
var keyLocal = deserializeEmit.DeclareLocal(keyType);
var valueLocal2 = deserializeEmit.DeclareLocal(valueType);
deserializeEmit = deserializeEmit
.ldarg_1
.call(readIntMethod)
.stloc(len)
.ldloc(len)
.ldc_i4_m1
.ceq
.brfalse(dictNotNullLabel2)
.ldarg_0
.ldnull
.stfld(field)
.br(dictNullLabel2)
.MarkLabel(dictNotNullLabel2)
.ldloc(len)
.newobj(dictType, typeof(int))
.stloc(deserializeDictLocal)
.ldc_i4_0
.stloc(i)
.br(beginForLabel)
.MarkLabel(beginForBodyLabel);
if (keyType.IsPrimitive || keyType == typeof(decimal))
{
deserializeEmit
.ldarg_1
.call(typeof(BinaryReader).GetMethod("Read" + keyType.Name))
.stloc(keyLocal);
}
else if (keyType == typeof(DateTime))
{
deserializeEmit
.ldarg_1
.call(typeof(BinaryReader).GetMethod("ReadInt64"))
.newobj(typeof(DateTime), typeof(long))
.stloc(keyLocal);
}
else if (keyType == typeof(string))
{
deserializeEmit
.ldloca(keyLocal)
.ldarg_1
.call(typeof(BinaryReader).GetMethod("ReadString"))
.stobj(typeof(string));
}
if (valueType.IsPrimitive || valueType == typeof(decimal))
{
deserializeEmit
.ldarg_1
.call(typeof(BinaryReader).GetMethod("Read" + keyType.Name))
.stloc(valueLocal2);
}
else if (valueType == typeof(DateTime))
{
deserializeEmit
.ldarg_1
.call(typeof(BinaryReader).GetMethod("ReadInt64"))
.newobj(typeof(DateTime), typeof(long))
.stloc(valueLocal2);
}
else if (valueType == typeof(string))
{
var strNullLabel = deserializeEmit.DefineLabel();
var strNotNullLabel = deserializeEmit.DefineLabel();
deserializeEmit
.ldarg_1
.call(readIntMethod)
.ldc_i4_m1
.ceq
.brfalse(strNotNullLabel)
.ldnull
.stloc(valueLocal2)
.br(strNullLabel)
.MarkLabel(strNotNullLabel)
.ldarg_1
.call(typeof(BinaryReader).GetMethod("ReadString"))
.stloc(valueLocal2)
.MarkLabel(strNullLabel);
}
deserializeEmit
.ldloc(deserializeDictLocal)
.ldloc(keyLocal)
.ldloc(valueLocal2)
.call(addElementMethod)
.ldloc(i)
.ldc_i4_1
.add
.stloc(i)
.MarkLabel(beginForLabel)
.ldloc(i)
.ldloc(len)
.clt
.brtrue(beginForBodyLabel)
.ldarg_0
.ldloc(deserializeDictLocal)
.stfld(field)
.MarkLabel(dictNullLabel2);
}