bool EmitDedicatedMethod(Compiler.CompilerContext ctx, Compiler.Local valueFrom, bool read)
{
System.Reflection.Emit.MethodBuilder method = ctx.GetDedicatedMethod(key, read);
if (method == null) return false;
using (Compiler.Local token = new ProtoBuf.Compiler.Local(ctx, typeof(SubItemToken)))
{
Type rwType = read ? typeof(ProtoReader) : typeof(ProtoWriter);
ctx.LoadValue(valueFrom);
if (!read) // write requires the object for StartSubItem; read doesn't
{
if (type.IsValueType) { ctx.LoadNullRef(); }
else { ctx.CopyValue(); }
}
ctx.LoadReaderWriter();
ctx.EmitCall(rwType.GetMethod("StartSubItem"));
ctx.StoreValue(token);
// note: value already on the stack
ctx.LoadReaderWriter();
ctx.EmitCall(method);
// handle inheritance (we will be calling the *base* version of things,
// but we expect Read to return the "type" type)
if (read && type != method.ReturnType) ctx.Cast(this.type);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(rwType.GetMethod("EndSubItem"));
}
return true;
}
public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.LoadValue(valueFrom);
ctx.CastToObject(type);
ctx.LoadReaderWriter();
ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(key));
if (type == ctx.MapType(typeof(object))) ctx.LoadNullRef();
else ctx.LoadValue(type);
ctx.LoadValue((int)options);
ctx.EmitCall(ctx.MapType(typeof(BclHelpers)).GetMethod("ReadNetObject"));
ctx.CastFromObject(type);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
if (overwriteList)
{
ctx.LoadNullRef();
}
else
{
ctx.LoadValue(valueFrom);
}
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("AppendBytes"));
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Tail.EmitRead(ctx, valueFrom);
ctx.CopyValue();
Compiler.CodeLabel @nonEmpty = ctx.DefineLabel(), @end = ctx.DefineLabel();
ctx.LoadValue(typeof(string).GetProperty("Length"));
ctx.BranchIfTrue(@nonEmpty, true);
ctx.DiscardValue();
ctx.LoadNullRef();
ctx.Branch(@end, true);
ctx.MarkLabel(@nonEmpty);
ctx.EmitCtor(typeof(Uri), typeof(string));
ctx.MarkLabel(@end);
}
public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.LoadValue(valueFrom);
ctx.CastToObject(type);
ctx.LoadReaderWriter();
ctx.LoadValue(key);
if (type == typeof(object))
{
ctx.LoadNullRef();
}
else
{
ctx.LoadValue(type);
}
ctx.LoadValue((int)options);
ctx.EmitCall(typeof(BclHelpers).GetMethod("ReadNetObject"));
ctx.CastFromObject(type);
}
public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local incoming)
{
using (Compiler.Local objValue = ctx.GetLocalWithValue(ExpectedType, incoming))
{
Compiler.Local[] locals = new Compiler.Local[members.Length];
try
{
for (int i = 0; i < locals.Length; i++)
{
Type type = GetMemberType(i);
bool store = true;
locals[i] = new Compiler.Local(ctx, type);
if (!Helpers.IsValueType(ExpectedType))
{
// value-types always read the old value
if (Helpers.IsValueType(type))
{
switch (Helpers.GetTypeCode(type))
{
case ProtoTypeCode.Boolean:
case ProtoTypeCode.Byte:
case ProtoTypeCode.Int16:
case ProtoTypeCode.Int32:
case ProtoTypeCode.SByte:
case ProtoTypeCode.UInt16:
case ProtoTypeCode.UInt32:
ctx.LoadValue(0);
break;
case ProtoTypeCode.Int64:
case ProtoTypeCode.UInt64:
ctx.LoadValue(0L);
break;
case ProtoTypeCode.Single:
ctx.LoadValue(0.0F);
break;
case ProtoTypeCode.Double:
ctx.LoadValue(0.0D);
break;
case ProtoTypeCode.Decimal:
ctx.LoadValue(0M);
break;
case ProtoTypeCode.Guid:
ctx.LoadValue(Guid.Empty);
break;
default:
ctx.LoadAddress(locals[i], type);
ctx.EmitCtor(type);
store = false;
break;
}
}
else
{
ctx.LoadNullRef();
}
if (store)
{
ctx.StoreValue(locals[i]);
}
}
}
Compiler.CodeLabel skipOld = Helpers.IsValueType(ExpectedType)
? new Compiler.CodeLabel()
: ctx.DefineLabel();
if (!Helpers.IsValueType(ExpectedType))
{
ctx.LoadAddress(objValue, ExpectedType);
ctx.BranchIfFalse(skipOld, false);
}
for (int i = 0; i < members.Length; i++)
{
ctx.LoadAddress(objValue, ExpectedType);
if (members[i] is FieldInfo)
{
ctx.LoadValue((FieldInfo)members[i]);
}
else if (members[i] is PropertyInfo)
{
ctx.LoadValue((PropertyInfo)members[i]);
}
ctx.StoreValue(locals[i]);
}
if (!Helpers.IsValueType(ExpectedType)) ctx.MarkLabel(skipOld);
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
Compiler.CodeLabel @continue = ctx.DefineLabel(),
processField = ctx.DefineLabel(),
notRecognised = ctx.DefineLabel();
ctx.Branch(@continue, false);
Compiler.CodeLabel[] handlers = new Compiler.CodeLabel[members.Length];
for (int i = 0; i < members.Length; i++)
{
handlers[i] = ctx.DefineLabel();
}
ctx.MarkLabel(processField);
ctx.LoadValue(fieldNumber);
ctx.LoadValue(1);
ctx.Subtract(); // jump-table is zero-based
ctx.Switch(handlers);
// and the default:
ctx.Branch(notRecognised, false);
for (int i = 0; i < handlers.Length; i++)
{
ctx.MarkLabel(handlers[i]);
IProtoSerializer tail = tails[i];
Compiler.Local oldValIfNeeded = tail.RequiresOldValue ? locals[i] : null;
ctx.ReadNullCheckedTail(locals[i].Type, tail, oldValIfNeeded);
if (tail.ReturnsValue)
{
if (Helpers.IsValueType(locals[i].Type))
{
ctx.StoreValue(locals[i]);
}
else
{
Compiler.CodeLabel hasValue = ctx.DefineLabel(), allDone = ctx.DefineLabel();
ctx.CopyValue();
ctx.BranchIfTrue(hasValue, true); // interpret null as "don't assign"
ctx.DiscardValue();
ctx.Branch(allDone, true);
ctx.MarkLabel(hasValue);
ctx.StoreValue(locals[i]);
ctx.MarkLabel(allDone);
}
}
ctx.Branch(@continue, false);
}
ctx.MarkLabel(notRecognised);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("SkipField"));
ctx.MarkLabel(@continue);
ctx.EmitBasicRead("ReadFieldHeader", ctx.MapType(typeof(int)));
ctx.CopyValue();
ctx.StoreValue(fieldNumber);
ctx.LoadValue(0);
ctx.BranchIfGreater(processField, false);
}
for (int i = 0; i < locals.Length; i++)
{
ctx.LoadValue(locals[i]);
}
ctx.EmitCtor(ctor);
ctx.StoreValue(objValue);
}
finally
{
for (int i = 0; i < locals.Length; i++)
{
if (locals[i] != null)
locals[i].Dispose(); // release for re-use
}
}
}
}
protected override void EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using(Compiler.Local valOrNull = ctx.GetLocalWithValue(expectedType, valueFrom))
using(Compiler.Local token = new Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))))
{
ctx.LoadNullRef();
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("StartSubItem"));
ctx.StoreValue(token);
if (Helpers.IsValueType(expectedType))
{
ctx.LoadAddress(valOrNull, expectedType);
ctx.LoadValue(expectedType.GetProperty("HasValue"));
}
else
{
ctx.LoadValue(valOrNull);
}
Compiler.CodeLabel @end = ctx.DefineLabel();
ctx.BranchIfFalse(@end, false);
if (Helpers.IsValueType(expectedType))
{
ctx.LoadAddress(valOrNull, expectedType);
ctx.EmitCall(expectedType.GetMethod("GetValueOrDefault", Helpers.EmptyTypes));
}
else
{
ctx.LoadValue(valOrNull);
}
Tail.EmitWrite(ctx, null);
ctx.MarkLabel(@end);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("EndSubItem"));
}
}
private static void EmitReadAndAddItem(Compiler.CompilerContext ctx, Compiler.Local list, IProtoSerializer tail, MethodInfo add)
{
ctx.LoadValue(list);
Type itemType = tail.ExpectedType;
if (tail.RequiresOldValue)
{
if (itemType.IsValueType || !tail.ReturnsValue)
{
// going to need a variable
using (Compiler.Local item = new Compiler.Local(ctx, itemType))
{
if (itemType.IsValueType)
{ // initialise the struct
ctx.LoadAddress(item, itemType);
ctx.EmitCtor(itemType);
}
else
{ // assign null
ctx.LoadNullRef();
ctx.StoreValue(item);
}
tail.EmitRead(ctx, item);
if (!tail.ReturnsValue) { ctx.LoadValue(item); }
}
}
else
{ // no variable; pass the null on the stack and take the value *off* the stack
ctx.LoadNullRef();
tail.EmitRead(ctx, null);
}
}
else
{
if (tail.ReturnsValue)
{ // out only (on the stack); just emit it
tail.EmitRead(ctx, null);
}
else
{ // doesn't take anything in nor return anything! WTF?
throw new InvalidOperationException();
}
}
// our "Add" is chosen either to take the correct type, or to take "object";
// we may need to box the value
Type addParamType = add.GetParameters()[0].ParameterType;
if(addParamType != itemType) {
if (addParamType == typeof(object))
{
ctx.CastToObject(itemType);
}
else
{
throw new InvalidOperationException("Conflicting item/add type");
}
}
ctx.EmitCall(add);
if (add.ReturnType != typeof(void))
{
ctx.DiscardValue();
}
}
private void EmitReadArray(Compiler.CompilerContext ctx, Compiler.Local list, Compiler.Local oldArr,
Compiler.Local newArr, IProtoSerializer tail, MethodInfo add, Type listType)
{
Compiler.CodeLabel readPacked = packedWireType == WireType.None ? new Compiler.CodeLabel() : ctx.DefineLabel();
Compiler.CodeLabel @end = ctx.DefineLabel();
if (packedWireType != WireType.None)
{
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("WireType"));
ctx.LoadValue((int)WireType.String);
ctx.BranchIfEqual(readPacked, false);
}
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, typeof(int)))
{
// int fieldNumber = source.FieldNumber;
ctx.LoadReaderWriter();
ctx.LoadValue(typeof (ProtoReader).GetProperty("FieldNumber"));
ctx.StoreValue(fieldNumber);
using (Compiler.Local readObject = new Compiler.Local(ctx, typeof (bool)))
using (Compiler.Local arrayKey = new Compiler.Local(ctx, typeof (int)))
{
// bool readObject = true;
ctx.LoadValue(true);
ctx.StoreValue(readObject);
// value = value ?? Array.CreateInstance(itemType, 0);
Compiler.CodeLabel @endCreateInstance = ctx.DefineLabel();
ctx.LoadValue(oldArr);
ctx.LoadNullRef();
ctx.TestEqual();
ctx.BranchIfFalse(@endCreateInstance, true);
ctx.LoadValue(itemType);
ctx.LoadValue(0);
ctx.EmitCall(typeof(Array).GetMethod("CreateInstance", new Type[] { typeof(Type), typeof(int) }));
ctx.StoreValue(oldArr);
ctx.MarkLabel(@endCreateInstance);
if (AsReference)
{
using (Compiler.Local objectKey = new Compiler.Local(ctx, typeof(int)))
{
//int objectKey = source.ReadInt32();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("ReadInt32"));
ctx.StoreValue(objectKey);
Compiler.CodeLabel @ifNotThere = ctx.DefineLabel();
Compiler.CodeLabel @endIf = ctx.DefineLabel();
//if (objectKey > 0)
ctx.LoadValue(objectKey);
ctx.LoadValue(0);
ctx.BranchIfLessOrEqual(@ifNotThere, true);
// value = source.NetCache.GetKeyedObject(objectKey);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(objectKey);
ctx.EmitCall(typeof(NetObjectCache).GetMethod("GetKeyedObject"));
ctx.StoreValue(oldArr);
//readObject = false;
ctx.LoadValue(false);
ctx.StoreValue(readObject);
//}
ctx.Branch(@endIf, true);
//else
ctx.MarkLabel(@ifNotThere);
//bool dummy;
//arrayKey = source.NetCache.AddObjectKey(value, out dummy);
using (Compiler.Local dummy = new Compiler.Local(ctx, typeof(bool)))
{
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(oldArr);
ctx.LoadAddress(dummy, typeof(bool));
ctx.EmitCall(typeof(NetObjectCache).GetMethod("AddObjectKey", new Type[] { typeof(object), typeof(bool).MakeByRefType() }));
ctx.StoreValue(arrayKey);
}
ctx.MarkLabel(@endIf);
}
}
else
{
using (Compiler.Local readValue = new Compiler.Local(ctx, typeof(int)))
{
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("ReadInt32"));
ctx.StoreValue(readValue);
Compiler.CodeLabel @codeContinues = ctx.DefineLabel();
ctx.LoadValue(readValue);
ctx.LoadValue(0);
ctx.BranchIfEqual(@codeContinues, true);
ctx.LoadValue(oldArr);
ctx.Branch(@end, false);
ctx.MarkLabel(@codeContinues);
}
}
/*
if (readObject)
{
while (source.TryReadFieldHeader(field))
{
list.Add(Tail.Read(null, source));
}
*/
Compiler.CodeLabel @finishRead = ctx.DefineLabel();
ctx.LoadValue(readObject);
ctx.BranchIfFalse(@finishRead, false);
Compiler.CodeLabel @beginWhileLoop = ctx.DefineLabel();
Compiler.CodeLabel @endWhileLoop = ctx.DefineLabel();
ctx.MarkLabel(@beginWhileLoop);
ctx.LoadReaderWriter();
ctx.LoadValue(fieldNumber);
ctx.EmitCall(typeof (ProtoReader).GetMethod("TryReadFieldHeader"));
ctx.BranchIfFalse(@endWhileLoop, false);
ListDecorator.EmitReadAndAddItem(ctx, list, tail, add, null);
ctx.Branch(@beginWhileLoop, false);
ctx.MarkLabel(@endWhileLoop);
// Array newArray = Array.CreateInstance(itemType, list.Count);
ctx.LoadValue(itemType);
ctx.LoadValue(list);
ctx.LoadValue(listType.GetProperty("Count"));
ctx.EmitCall(typeof(Array).GetMethod("CreateInstance", new Type[] { typeof(Type), typeof(int) }));
ctx.StoreValue(newArr);
// list.CopyTo(newArray, 0);
ctx.LoadValue(list);
ctx.LoadValue(newArr);
ctx.LoadValue(0);
ctx.EmitCall(listType.GetMethod("CopyTo", new Type[] { ExpectedType, typeof(int) }));
if (AsReference)
{
//source.NetCache.UpdateKeyedObject(arrayKey, value, newArray);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(arrayKey);
ctx.LoadValue(oldArr);
ctx.LoadValue(newArr);
ctx.EmitCall(typeof(NetObjectCache).GetMethod("UpdateKeyedObject"));
}
//value = newArray;
ctx.LoadValue(newArr);
ctx.StoreValue(oldArr);
ctx.MarkLabel(@finishRead);
ctx.LoadValue(oldArr);
ctx.MarkLabel(@end);
}
}
if (packedWireType != WireType.None)
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.Branch(allDone, false);
ctx.MarkLabel(readPacked);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("StartSubItem"));
Compiler.CodeLabel testForData = ctx.DefineLabel(), noMoreData = ctx.DefineLabel();
ctx.MarkLabel(testForData);
ctx.LoadValue((int) packedWireType);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("HasSubValue"));
ctx.BranchIfFalse(noMoreData, false);
ListDecorator.EmitReadAndAddItem(ctx, list, tail, add, null);
ctx.Branch(testForData, false);
ctx.MarkLabel(noMoreData);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("EndSubItem"));
EmitReadEndPacked(ctx, list, oldArr, newArr, listType);
ctx.MarkLabel(allDone);
}
}
bool EmitDedicatedMethod(Compiler.CompilerContext ctx, Compiler.Local valueFrom, bool read)
{
#if SILVERLIGHT
return false;
#else
MethodBuilder method = ctx.GetDedicatedMethod(key, read);
if (method == null) return false;
using (Compiler.Local token = new ProtoBuf.Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))))
{
Type rwType = ctx.MapType(read ? typeof(ProtoReader) : typeof(ProtoWriter));
ctx.LoadValue(valueFrom);
if (!read) // write requires the object for StartSubItem; read doesn't
{ // (if recursion-check is disabled [subtypes] then null is fine too)
if (type.IsValueType || !recursionCheck) { ctx.LoadNullRef(); }
else { ctx.CopyValue(); }
}
ctx.LoadReaderWriter();
ctx.EmitCall(rwType.GetMethod("StartSubItem"));
ctx.StoreValue(token);
// note: value already on the stack
ctx.LoadReaderWriter();
ctx.EmitCall(method);
// handle inheritance (we will be calling the *base* version of things,
// but we expect Read to return the "type" type)
if (read && type != method.ReturnType) ctx.Cast(this.type);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(rwType.GetMethod("EndSubItem"));
}
return true;
#endif
}
private void EmitCreateIfNull(Compiler.CompilerContext ctx, Type type, Compiler.Local storage)
{
Helpers.DebugAssert(storage != null);
if (!type.IsValueType)
{
Compiler.CodeLabel afterNullCheck = ctx.DefineLabel();
ctx.LoadValue(storage);
ctx.BranchIfTrue(afterNullCheck, true);
// different ways of creating a new instance
bool callNoteObject = true;
if (!useConstructor)
{ // DataContractSerializer style
ctx.LoadValue(constructType);
ctx.EmitCall(typeof(BclHelpers).GetMethod("GetUninitializedObject"));
ctx.Cast(forType);
}
else if (constructType.IsClass && hasConstructor)
{ // XmlSerializer style
ctx.EmitCtor(constructType);
}
else
{
ctx.LoadValue(type);
ctx.EmitCall(typeof(TypeModel).GetMethod("ThrowCannotCreateInstance",
BindingFlags.Static | BindingFlags.Public));
ctx.LoadNullRef();
callNoteObject = false;
}
if (callNoteObject)
{
// track root object creation
ctx.CopyValue();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("NoteObject",
BindingFlags.Static | BindingFlags.Public));
}
if (baseCtorCallbacks != null) {
for (int i = 0; i < baseCtorCallbacks.Length; i++) {
EmitInvokeCallback(ctx, baseCtorCallbacks[i]);
}
}
if (callbacks != null) EmitInvokeCallback(ctx, callbacks.BeforeDeserialize);
ctx.StoreValue(storage);
ctx.MarkLabel(afterNullCheck);
}
}
public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local incoming)
{
bool issueReferenceDirectives = !baseTupleAsReference && asReference;
Compiler.CodeLabel @end = ctx.DefineLabel();
using (Compiler.Local tupleKey = new Compiler.Local(ctx, typeof(int)))
using (Compiler.Local oldTuple = new Compiler.Local(ctx, typeof(object)))
using (Compiler.Local objValue = ctx.GetLocalWithValue(ExpectedType, incoming))
{
Compiler.Local[] locals = new Compiler.Local[members.Length];
try
{
if (issueReferenceDirectives)
{
//int tupleKey = 0;
ctx.LoadValue(0);
ctx.StoreValue(tupleKey);
//object oldTuple = null;
ctx.LoadNullRef();
ctx.StoreValue(oldTuple);
//tupleKey = (int)source.ReadUInt32();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("ReadUInt32"));
//ctx.CastToObject(typeof (int));
ctx.StoreValue(tupleKey);
Compiler.CodeLabel @objectNotFound = ctx.DefineLabel();
ctx.LoadValue(tupleKey);
ctx.LoadValue(0);
ctx.BranchIfEqual(@objectNotFound, true);
//// return source.NetCache.GetKeyedObject(tupleKey);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof (ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(tupleKey);
ctx.EmitCall(typeof (NetObjectCache).GetMethod("GetKeyedObject"));
ctx.CastFromObject(ExpectedType);
ctx.StoreValue(objValue);
ctx.Branch(@end, false);
ctx.MarkLabel(@objectNotFound);
ctx.EmitCtor(typeof (object));
ctx.StoreValue(oldTuple);
// tupleKey = source.NetCache.AddObjectKey(oldTuple, out dummy);
using (Compiler.Local dummy = new Compiler.Local(ctx, typeof (bool)))
{
ctx.LoadReaderWriter();
ctx.LoadValue(typeof (ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(oldTuple);
ctx.LoadAddress(dummy, typeof (bool));
ctx.EmitCall(typeof (NetObjectCache).GetMethod("AddObjectKey", new Type[] { typeof(object), typeof(bool).MakeByRefType() }));
ctx.StoreValue(tupleKey);
}
}
for (int i = 0; i < locals.Length; i++)
{
Type type = GetMemberType(i);
bool store = true;
locals[i] = new Compiler.Local(ctx, type);
if (!ExpectedType.IsValueType)
{
// value-types always read the old value
if (type.IsValueType)
{
switch (Helpers.GetTypeCode(type))
{
case ProtoTypeCode.Boolean:
case ProtoTypeCode.Byte:
case ProtoTypeCode.Int16:
case ProtoTypeCode.Int32:
case ProtoTypeCode.SByte:
case ProtoTypeCode.UInt16:
case ProtoTypeCode.UInt32:
ctx.LoadValue(0);
break;
case ProtoTypeCode.Int64:
case ProtoTypeCode.UInt64:
ctx.LoadValue(0L);
break;
case ProtoTypeCode.Single:
ctx.LoadValue(0.0F);
break;
case ProtoTypeCode.Double:
ctx.LoadValue(0.0D);
break;
case ProtoTypeCode.Decimal:
ctx.LoadValue(0M);
break;
case ProtoTypeCode.Guid:
ctx.LoadValue(Guid.Empty);
break;
default:
ctx.LoadAddress(locals[i], type);
ctx.EmitCtor(type);
store = false;
break;
}
}
else
{
ctx.LoadNullRef();
}
if (store)
{
ctx.StoreValue(locals[i]);
}
}
}
Compiler.CodeLabel skipOld = ExpectedType.IsValueType
? new Compiler.CodeLabel()
: ctx.DefineLabel();
if (!ExpectedType.IsValueType)
{
ctx.LoadAddress(objValue, ExpectedType);
ctx.BranchIfFalse(skipOld, false);
}
for (int i = 0; i < members.Length; i++)
{
ctx.LoadAddress(objValue, ExpectedType);
switch (members[i].MemberType)
{
case MemberTypes.Field:
ctx.LoadValue((FieldInfo) members[i]);
break;
case MemberTypes.Property:
ctx.LoadValue((PropertyInfo) members[i]);
break;
}
ctx.StoreValue(locals[i]);
}
if (!ExpectedType.IsValueType) ctx.MarkLabel(skipOld);
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, typeof (int)))
using (Compiler.Local j = new Compiler.Local(ctx, typeof (int)))
{
// j = 0
ctx.LoadValue(0);
ctx.StoreValue(j);
Compiler.CodeLabel @continue = ctx.DefineLabel(),
processField = ctx.DefineLabel(),
notRecognised = ctx.DefineLabel(),
@endWhileLoop = ctx.DefineLabel();
ctx.Branch(@continue, false);
Compiler.CodeLabel[] handlers = new Compiler.CodeLabel[members.Length];
for (int i = 0; i < members.Length; i++)
{
handlers[i] = ctx.DefineLabel();
}
ctx.MarkLabel(processField);
ctx.LoadValue(fieldNumber);
ctx.LoadValue(1);
ctx.Subtract(); // jump-table is zero-based
ctx.Switch(handlers);
// and the default:
ctx.Branch(notRecognised, false);
for (int i = 0; i < handlers.Length; i++)
{
ctx.MarkLabel(handlers[i]);
IProtoSerializer tail = tails[i];
Compiler.Local oldValIfNeeded = tail.RequiresOldValue ? locals[i] : null;
ctx.ReadNullCheckedTail(locals[i].Type, tail, oldValIfNeeded);
if (tail.ReturnsValue)
{
if (locals[i].Type.IsValueType)
{
ctx.StoreValue(locals[i]);
}
else
{
Compiler.CodeLabel hasValue = ctx.DefineLabel(), allDone = ctx.DefineLabel();
ctx.CopyValue();
ctx.BranchIfTrue(hasValue, true); // interpret null as "don't assign"
ctx.DiscardValue();
ctx.Branch(allDone, true);
ctx.MarkLabel(hasValue);
ctx.StoreValue(locals[i]);
ctx.MarkLabel(allDone);
}
}
ctx.Branch(@continue, false);
}
ctx.MarkLabel(notRecognised);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("SkipField"));
ctx.MarkLabel(@continue);
// j < values.Length
ctx.LoadValue(j);
ctx.LoadValue(members.Length);
ctx.BranchIfGreaterOrEqual(@endWhileLoop, false);
//j++
ctx.LoadValue(j);
ctx.LoadValue(1);
ctx.Add();
ctx.StoreValue(j);
// source.ReadNextFieldHack() > 0
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("ReadNextFieldHack"));
ctx.LoadValue(0);
ctx.BranchIfLessOrEqual(@endWhileLoop, true);
// field = source.ReadFieldHeader();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("ReadFieldHeader"));
ctx.StoreValue(fieldNumber);
ctx.Branch(processField, false);
ctx.MarkLabel(@endWhileLoop);
}
for (int i = 0; i < locals.Length; i++)
{
ctx.LoadValue(locals[i]);
}
ctx.EmitCtor(ctor);
ctx.StoreValue(objValue);
if (issueReferenceDirectives)
{
//source.NetCache.UpdateKeyedObject(tupleKey, oldTuple, result);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof (ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(tupleKey);
ctx.LoadValue(oldTuple);
ctx.LoadValue(objValue);
ctx.CastToObject(ExpectedType);
ctx.EmitCall(typeof (NetObjectCache).GetMethod("UpdateKeyedObject"));
}
if (forceIssueFakeHeader)
{
//source.ReadEndGroupFieldHeaderHack();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("ReadEndGroupFieldHeaderHack"));
}
ctx.MarkLabel(@end);
ctx.LoadValue(objValue);
}
finally
{
for (int i = 0; i < locals.Length; i++)
{
if (locals[i] != null)
locals[i].Dispose(); // release for re-use
}
}
}
}
private void EmitCreateIfNull(Compiler.CompilerContext ctx, Type type, Compiler.Local storage)
{
Helpers.DebugAssert(storage != null);
if (!type.IsValueType)
{
Compiler.CodeLabel afterNullCheck = ctx.DefineLabel();
ctx.LoadValue(storage);
ctx.BranchIfTrue(afterNullCheck, true);
// different ways of creating a new instance
if (!useConstructor)
{ // DataContractSerializer style
ctx.LoadValue(forType);
ctx.EmitCall(typeof(BclHelpers).GetMethod("GetUninitializedObject"));
ctx.Cast(forType);
} else if (type.IsClass && !type.IsAbstract && (
(type.GetConstructor(
BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public,
null, Helpers.EmptyTypes, null)) != null))
{ // XmlSerializer style
ctx.EmitCtor(type);
}
else
{
ctx.LoadValue(type);
ctx.EmitCall(typeof(TypeModel).GetMethod("ThrowCannotCreateInstance",
BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic));
ctx.LoadNullRef();
}
if (baseCtorCallbacks != null) {
for (int i = 0; i < baseCtorCallbacks.Length; i++) {
EmitInvokeCallback(ctx, baseCtorCallbacks[i]);
}
}
if (callbacks != null) EmitInvokeCallback(ctx, callbacks.BeforeDeserialize);
ctx.StoreValue(storage);
ctx.MarkLabel(afterNullCheck);
}
}
