protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local oldValue = ctx.GetLocalWithValue(expectedType, valueFrom))
using (Compiler.Local token = new Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))))
using (Compiler.Local field = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("StartSubItem"));
ctx.StoreValue(token);
Compiler.CodeLabel next = ctx.DefineLabel(), processField = ctx.DefineLabel(), end = ctx.DefineLabel();
ctx.MarkLabel(next);
ctx.EmitBasicRead("ReadFieldHeader", ctx.MapType(typeof(int)));
ctx.CopyValue();
ctx.StoreValue(field);
ctx.LoadValue(Tag); // = 1 - process
ctx.BranchIfEqual(processField, true);
ctx.LoadValue(field);
ctx.LoadValue(1); // < 1 - exit
ctx.BranchIfLess(end, false);
// default: skip
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("SkipField"));
ctx.Branch(next, true);
// process
ctx.MarkLabel(processField);
if (Tail.RequiresOldValue)
{
if (Helpers.IsValueType(expectedType))
{
ctx.LoadAddress(oldValue, expectedType);
ctx.EmitCall(expectedType.GetMethod("GetValueOrDefault", Helpers.EmptyTypes));
}
else
{
ctx.LoadValue(oldValue);
}
}
Tail.EmitRead(ctx, null);
// note we demanded always returns a value
if (Helpers.IsValueType(expectedType))
{
ctx.EmitCtor(expectedType, Tail.ExpectedType); // re-nullable<T> it
}
ctx.StoreValue(oldValue);
ctx.Branch(next, false);
// outro
ctx.MarkLabel(end);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("EndSubItem"));
ctx.LoadValue(oldValue); // load the old value
}
}
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;
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
bool writeValue;
SanityCheck(property, Tail, out writeValue, ctx.NonPublic);
if (ExpectedType.IsValueType && valueFrom == null)
{
throw new InvalidOperationException("Attempt to mutate struct on the head of the stack; changes would be lost");
}
ctx.LoadAddress(valueFrom, ExpectedType); // stack is: old-addr
if (writeValue && Tail.RequiresOldValue)
{ // need to read and write
ctx.CopyValue();
}
// stack is: [old-addr]|old-addr
if (Tail.RequiresOldValue)
{
ctx.LoadValue(property); // stack is: [old-addr]|old-value
}
ctx.ReadNullCheckedTail(property.PropertyType, Tail, null); // stack is [old-addr]|[new-value]
if (writeValue)
{ // stack is old-addr|new-value
ctx.StoreValue(property);
}
else
{ // don't want return value; drop it if anything there
// stack is [new-value]
if (Tail.ReturnsValue) { ctx.DiscardValue(); }
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom))
{
ctx.LoadAddress(loc, ExpectedType);
if (Tail.RequiresOldValue)
{
ctx.CopyValue();
ctx.LoadValue(field);
}
// value is either now on the stack or not needed
ctx.ReadNullCheckedTail(field.FieldType, Tail, null);
if (Tail.ReturnsValue)
{
if (field.FieldType.IsValueType)
{
// stack is now the return value
ctx.StoreValue(field);
}
else
{
Compiler.CodeLabel hasValue = ctx.DefineLabel(), allDone = ctx.DefineLabel();
ctx.CopyValue();
ctx.BranchIfTrue(hasValue, true); // interpret null as "don't assign"
// no value, discard
ctx.DiscardValue();
ctx.DiscardValue();
ctx.Branch(allDone, true);
ctx.MarkLabel(hasValue);
ctx.StoreValue(field);
ctx.MarkLabel(allDone);
}
}
else
{
ctx.DiscardValue();
}
}
}
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);
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom))
{
ctx.LoadAddress(loc, ExpectedType);
if (Tail.RequiresOldValue)
{
ctx.CopyValue();
ctx.LoadValue(field);
}
// value is either now on the stack or not needed
ctx.ReadNullCheckedTail(field.FieldType, Tail, null);
// stack is now the return value
ctx.StoreValue(field);
}
}
protected override void EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Compiler.CodeLabel done = ctx.DefineLabel();
if (valueFrom == null)
{
ctx.CopyValue(); // on the stack
Compiler.CodeLabel needToPop = ctx.DefineLabel();
EmitBranchIfDefaultValue(ctx, needToPop);
Tail.EmitWrite(ctx, null);
ctx.Branch(done, true);
ctx.MarkLabel(needToPop);
ctx.DiscardValue();
}
else
{
ctx.LoadValue(valueFrom); // variable/parameter
EmitBranchIfDefaultValue(ctx, done);
Tail.EmitWrite(ctx, valueFrom);
}
ctx.MarkLabel(done);
}
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 EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
bool writeValue;
SanityCheck(ctx.Model, property, Tail, out writeValue, ctx.NonPublic, ctx.AllowInternal(property));
if (ExpectedType.IsValueType && valueFrom == null)
{
throw new InvalidOperationException("Attempt to mutate struct on the head of the stack; changes would be lost");
}
ctx.LoadAddress(valueFrom, ExpectedType); // stack is: old-addr
if (writeValue && Tail.RequiresOldValue)
{ // need to read and write
ctx.CopyValue();
}
// stack is: [old-addr]|old-addr
if (Tail.RequiresOldValue)
{
ctx.LoadValue(property); // stack is: [old-addr]|old-value
}
Type propertyType = property.PropertyType;
ctx.ReadNullCheckedTail(propertyType, Tail, null); // stack is [old-addr]|[new-value]
if (writeValue)
{
// stack is old-addr|new-value
Compiler.CodeLabel @skip = new Compiler.CodeLabel(), allDone = new Compiler.CodeLabel(); // <=== default structs
if (!propertyType.IsValueType)
{ // if the tail returns a null, intepret that as *no assign*
ctx.CopyValue(); // old-addr|new-value|new-value
@skip = ctx.DefineLabel();
allDone = ctx.DefineLabel();
ctx.BranchIfFalse(@skip, true); // old-addr|new-value
}
if (shadowSetter == null)
{
ctx.StoreValue(property);
}
else
{
ctx.EmitCall(shadowSetter);
}
if (!propertyType.IsValueType)
{
ctx.Branch(allDone, true);
ctx.MarkLabel(@skip); // old-addr|new-value
ctx.DiscardValue();
ctx.DiscardValue();
ctx.MarkLabel(allDone);
}
}
else
{ // don't want return value; drop it if anything there
// stack is [new-value]
if (Tail.ReturnsValue) { ctx.DiscardValue(); }
}
}
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
}
}
}
}
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
}
void IProtoTypeSerializer.EmitCallback(Compiler.CompilerContext ctx, Compiler.Local valueFrom, TypeModel.CallbackType callbackType)
{
Helpers.DebugAssert(((IProtoTypeSerializer)this).HasCallbacks(callbackType), "Shouldn't be calling this if there is nothing to do");
MethodInfo method = callbacks == null ? null : callbacks[callbackType];
ctx.LoadValue(valueFrom);
EmitInvokeCallback(ctx, method);
Compiler.CodeLabel @break = ctx.DefineLabel();
if (CanHaveInheritance)
{
for (int i = 0; i < serializers.Length; i++)
{
IProtoSerializer ser = serializers[i];
IProtoTypeSerializer typeser;
if (ser.ExpectedType != forType && (typeser = (IProtoTypeSerializer)ser).HasCallbacks(callbackType))
{
Compiler.CodeLabel ifMatch = ctx.DefineLabel(), nextTest = ctx.DefineLabel();
ctx.CopyValue();
ctx.TryCast(ser.ExpectedType);
ctx.CopyValue();
ctx.BranchIfTrue(ifMatch, true);
ctx.DiscardValue();
ctx.Branch(nextTest, false);
ctx.MarkLabel(ifMatch);
typeser.EmitCallback(ctx, null, callbackType);
ctx.Branch(@break, false);
ctx.MarkLabel(nextTest);
}
}
}
ctx.MarkLabel(@break);
ctx.DiscardValue();
}
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Type expected = ExpectedType;
using (Compiler.Local loc = ctx.GetLocalWithValue(expected, valueFrom))
{
// pre-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.BeforeSerialize);
Compiler.CodeLabel startFields = ctx.DefineLabel();
// inheritance
if (CanHaveInheritance)
{
for (int i = 0; i < serializers.Length; i++)
{
IProtoSerializer ser = serializers[i];
if (ser.ExpectedType != forType)
{
Compiler.CodeLabel ifMatch = ctx.DefineLabel(), nextTest = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.TryCast(ser.ExpectedType);
ctx.CopyValue();
ctx.BranchIfTrue(ifMatch, true);
ctx.DiscardValue();
ctx.Branch(nextTest, true);
ctx.MarkLabel(ifMatch);
ser.EmitWrite(ctx, null);
ctx.Branch(startFields, false);
ctx.MarkLabel(nextTest);
}
}
if (constructType != null && constructType != forType)
{
using(Compiler.Local actualType = new Compiler.Local(ctx, typeof(Type)))
{
// would have jumped to "fields" if an expected sub-type, so two options:
// a: *exactly* that type, b: an *unexpected* type
ctx.LoadValue(loc);
ctx.EmitCall(typeof(object).GetMethod("GetType"));
ctx.CopyValue();
ctx.StoreValue(actualType);
ctx.LoadValue(forType);
ctx.BranchIfEqual(startFields, true);
ctx.LoadValue(actualType);
ctx.LoadValue(constructType);
ctx.BranchIfEqual(startFields, true);
}
}
else
{
// would have jumped to "fields" if an expected sub-type, so two options:
// a: *exactly* that type, b: an *unexpected* type
ctx.LoadValue(loc);
ctx.EmitCall(typeof(object).GetMethod("GetType"));
ctx.LoadValue(forType);
ctx.BranchIfEqual(startFields, true);
}
// unexpected, then... note that this *might* be a proxy, which
// is handled by ThrowUnexpectedSubtype
ctx.LoadValue(forType);
ctx.LoadValue(loc);
ctx.EmitCall(typeof(object).GetMethod("GetType"));
ctx.EmitCall(typeof(TypeModel).GetMethod("ThrowUnexpectedSubtype",
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static));
}
// fields
ctx.MarkLabel(startFields);
for (int i = 0; i < serializers.Length; i++)
{
IProtoSerializer ser = serializers[i];
if (ser.ExpectedType == forType) ser.EmitWrite(ctx, loc);
}
// extension data
if (isExtensible)
{
ctx.LoadValue(loc);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("AppendExtensionData"));
}
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterSerialize);
}
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Type expected = ExpectedType;
Helpers.DebugAssert(valueFrom != null);
using (Compiler.Local loc = ctx.GetLocalWithValue(expected, valueFrom))
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, typeof(int)))
{
// pre-callbacks
if (HasCallbacks(TypeModel.CallbackType.BeforeDeserialize))
{
Compiler.CodeLabel callbacksDone = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.BranchIfFalse(callbacksDone, false);
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.BeforeDeserialize);
ctx.MarkLabel(callbacksDone);
}
Compiler.CodeLabel @continue = ctx.DefineLabel(), processField = ctx.DefineLabel();
ctx.Branch(@continue, false);
ctx.MarkLabel(processField);
foreach (BasicList.Group group in BasicList.GetContiguousGroups(fieldNumbers, serializers))
{
Compiler.CodeLabel tryNextField = ctx.DefineLabel();
int groupItemCount = group.Items.Count;
if (groupItemCount == 1)
{
// discreet group; use an equality test
ctx.LoadValue(fieldNumber);
ctx.LoadValue(group.First);
Compiler.CodeLabel processThisField = ctx.DefineLabel();
ctx.BranchIfEqual(processThisField, true);
ctx.Branch(tryNextField, false);
WriteFieldHandler(ctx, expected, loc, processThisField, @continue, (IProtoSerializer)group.Items[0]);
}
else
{ // implement as a jump-table-based switch
ctx.LoadValue(fieldNumber);
ctx.LoadValue(group.First);
ctx.Subtract(); // jump-tables are zero-based
Compiler.CodeLabel[] jmp = new Compiler.CodeLabel[groupItemCount];
for (int i = 0; i < groupItemCount; i++) {
jmp[i] = ctx.DefineLabel();
}
ctx.Switch(jmp);
// write the default...
ctx.Branch(tryNextField, false);
for (int i = 0; i < groupItemCount; i++)
{
WriteFieldHandler(ctx, expected, loc, jmp[i], @continue, (IProtoSerializer)group.Items[i]);
}
}
ctx.MarkLabel(tryNextField);
}
EmitCreateIfNull(ctx, expected, loc);
ctx.LoadReaderWriter();
if (isExtensible)
{
ctx.LoadValue(loc);
ctx.EmitCall(typeof(ProtoReader).GetMethod("AppendExtensionData"));
}
else
{
ctx.EmitCall(typeof(ProtoReader).GetMethod("SkipField"));
}
ctx.MarkLabel(@continue);
ctx.EmitBasicRead("ReadFieldHeader", typeof(int));
ctx.CopyValue();
ctx.StoreValue(fieldNumber);
ctx.LoadValue(0);
ctx.BranchIfGreater(processField, false);
EmitCreateIfNull(ctx, expected, loc);
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterDeserialize);
}
}
static void EmitInvokeCallback(Compiler.CompilerContext ctx, MethodInfo method)
{
if (method != null)
{
ctx.CopyValue(); // assumes the target is on the stack, and that we want to *retain* it on the stack
ParameterInfo[] parameters = method.GetParameters();
bool handled = false;
switch (parameters.Length)
{
case 0: handled = true; break;
case 1:
Type parameterType = parameters[0].ParameterType;
if (parameterType == typeof(SerializationContext))
{
ctx.LoadSerializationContext();
handled = true;
}
#if PLAT_BINARYFORMATTER
else if (parameterType == typeof(System.Runtime.Serialization.StreamingContext))
{
ctx.LoadSerializationContext();
MethodInfo op = typeof(SerializationContext).GetMethod("op_Implicit", new Type[] { typeof(SerializationContext) });
ctx.EmitCall(op);
handled = true;
}
#endif
break;
}
if (!handled)
{
throw Meta.CallbackSet.CreateInvalidCallbackSignature(method);
}
ctx.EmitCall(method);
}
}
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);
}
}
private void EmitReadEndPacked(Compiler.CompilerContext ctx, Compiler.Local list, Compiler.Local oldArr,
Compiler.Local newArr, Type listType)
{
// leave this "using" here, as it can share the "FieldNumber" local with EmitReadList
using(Compiler.Local oldLen = AppendToCollection ? new ProtoBuf.Compiler.Local(ctx, typeof(int)) : null) {
Type[] copyToArrayInt32Args = new Type[] { typeof(Array), typeof(int) };
if (AppendToCollection)
{
ctx.LoadLength(oldArr, true);
ctx.CopyValue();
ctx.StoreValue(oldLen);
ctx.LoadAddress(list, listType);
ctx.LoadValue(listType.GetProperty("Count"));
ctx.Add();
ctx.CreateArray(itemType, null); // length is on the stack
ctx.StoreValue(newArr);
ctx.LoadValue(oldLen);
Compiler.CodeLabel nothingToCopy = ctx.DefineLabel();
ctx.BranchIfFalse(nothingToCopy, true);
ctx.LoadValue(oldArr);
ctx.LoadValue(newArr);
ctx.LoadValue(0); // index in target
ctx.EmitCall(ExpectedType.GetMethod("CopyTo", copyToArrayInt32Args));
ctx.MarkLabel(nothingToCopy);
ctx.LoadValue(list);
ctx.LoadValue(newArr);
ctx.LoadValue(oldLen);
}
else
{
ctx.LoadAddress(list, listType);
ctx.LoadValue(listType.GetProperty("Count"));
ctx.CreateArray(itemType, null);
ctx.StoreValue(newArr);
ctx.LoadAddress(list, listType);
ctx.LoadValue(newArr);
ctx.LoadValue(0);
}
copyToArrayInt32Args[0] = ExpectedType; // // prefer: CopyTo(T[], int)
MethodInfo copyTo = listType.GetMethod("CopyTo", copyToArrayInt32Args);
if (copyTo == null)
{ // fallback: CopyTo(Array, int)
copyToArrayInt32Args[1] = typeof(Array);
copyTo = listType.GetMethod("CopyTo", copyToArrayInt32Args);
}
ctx.EmitCall(copyTo);
}
ctx.LoadValue(newArr);
}
static void EmitInvokeCallback(Compiler.CompilerContext ctx, MethodInfo method)
{
if (method != null)
{
ctx.CopyValue(); // assumes the target is on the stack, and that we want to *retain* it on the stack
#if PLAT_BINARYFORMATTER
if (method.GetParameters().Length == 1)
{
ctx.LoadValue((int)StreamingContextState);
ctx.EmitCtor(typeof(System.Runtime.Serialization.StreamingContext), new Type[] { typeof(System.Runtime.Serialization.StreamingContextStates) });
}
#endif
ctx.EmitCall(method);
}
}