private void WriteFieldHandler(
Compiler.CompilerContext ctx, Type expected, Compiler.Local loc,
Compiler.CodeLabel handler, Compiler.CodeLabel @continue, IProtoSerializer serializer)
{
ctx.MarkLabel(handler);
Type serType = serializer.ExpectedType;
if (serType == forType)
{
EmitCreateIfNull(ctx, loc);
serializer.EmitRead(ctx, loc);
}
else
{
//RuntimeTypeModel rtm = (RuntimeTypeModel)ctx.Model;
if (((IProtoTypeSerializer)serializer).CanCreateInstance())
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.BranchIfFalse(allDone, false); // null is always ok
ctx.LoadValue(loc);
ctx.TryCast(serType);
ctx.BranchIfTrue(allDone, false); // not null, but of the correct type
// otherwise, need to convert it
ctx.LoadReaderWriter();
ctx.LoadValue(loc);
((IProtoTypeSerializer)serializer).EmitCreateInstance(ctx);
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("Merge"));
ctx.Cast(expected);
ctx.StoreValue(loc); // Merge always returns a value
// nothing needs doing
ctx.MarkLabel(allDone);
}
ctx.LoadValue(loc);
ctx.Cast(serType);
serializer.EmitRead(ctx, null);
}
if (serializer.ReturnsValue)
{ // update the variable
ctx.StoreValue(loc);
}
ctx.Branch(@continue, false); // "continue"
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Helpers.DebugAssert(valueFrom != null); // don't support stack-head for this
using (Compiler.Local converted = new Compiler.Local(ctx, declaredType)) // declare/re-use local
{
ctx.LoadValue(valueFrom); // load primary onto stack
ctx.EmitCall(toTail); // static convert op, primary-to-surrogate
ctx.StoreValue(converted); // store into surrogate local
rootTail.EmitRead(ctx, converted); // downstream processing against surrogate local
ctx.LoadValue(converted); // load from surrogate local
ctx.EmitCall(fromTail); // static convert op, surrogate-to-primary
ctx.StoreValue(valueFrom); // store back into primary
}
}
private static void WriteEnumValue(Compiler.CompilerContext ctx, ProtoTypeCode typeCode, Compiler.CodeLabel handler, Compiler.CodeLabel @continue, object value, Compiler.Local local)
{
ctx.MarkLabel(handler);
WriteEnumValue(ctx, typeCode, value);
ctx.StoreValue(local);
ctx.Branch(@continue, false); // "continue"
}
private void EmitCreateIfNull(Compiler.CompilerContext ctx, Compiler.Local storage)
{
Helpers.DebugAssert(storage != null);
if (!ExpectedType.IsValueType)
{
Compiler.CodeLabel afterNullCheck = ctx.DefineLabel();
ctx.LoadValue(storage);
ctx.BranchIfTrue(afterNullCheck, false);
((IProtoTypeSerializer)this).EmitCreateInstance(ctx);
if (callbacks != null)
{
EmitInvokeCallback(ctx, callbacks.BeforeDeserialize, true, null, forType);
}
ctx.StoreValue(storage);
ctx.MarkLabel(afterNullCheck);
}
}
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();
}
}
}
void IRuntimeProtoSerializerNode.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
// Debug.Assert(valueFrom is object, "surrogate value on stack-head"); // don't support stack-head for this
using Compiler.Local converted = rootTail.RequiresOldValue ? new Compiler.Local(ctx, declaredType) : null;
if (rootTail.RequiresOldValue)
{
ctx.LoadValue(valueFrom); // load primary onto stack
ctx.EmitCall(toTail); // static convert op, primary-to-surrogate
ctx.StoreValue(converted); // store into surrogate local
}
rootTail.EmitRead(ctx, converted); // downstream processing against surrogate local
ctx.LoadValue(converted); // load from surrogate local
ctx.EmitCall(fromTail); // static convert op, surrogate-to-primary
ctx.StoreValue(valueFrom); // store back into primary
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (ctx.StartDebugBlockAuto(this, _field.Name))
{
using (Compiler.Local loc = ctx.GetLocalWithValueForEmitRead(this, valueFrom))
using (Compiler.Local newVal = new Compiler.Local(ctx, _field.FieldType))
{
Compiler.Local valueForTail;
if (Tail.RequiresOldValue)
{
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(_field);
if (!Tail.EmitReadReturnsValue)
{
ctx.StoreValue(newVal);
valueForTail = newVal;
}
else
{
valueForTail = null; // on stack
}
}
else
{
valueForTail = null;
}
Tail.EmitRead(ctx, valueForTail);
if (Tail.EmitReadReturnsValue)
{
ctx.StoreValue(newVal);
}
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(newVal);
ctx.StoreValue(_field);
if (EmitReadReturnsValue)
{
ctx.LoadValue(loc);
}
}
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom))
{
if (Tail.RequiresOldValue)
{
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(field);
}
// value is either now on the stack or not needed
ctx.ReadNullCheckedTail(field.FieldType, Tail, null, overrideType);
if (Tail.ReturnsValue)
{
var newType = overrideType != null ? overrideType : field.FieldType;
using (Compiler.Local newVal = new Compiler.Local(ctx, newType))
{
ctx.StoreValue(newVal);
if (Helpers.IsValueType(field.FieldType))
{
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(newVal);
ctx.StoreValue(field);
}
else
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.LoadValue(newVal);
ctx.BranchIfFalse(allDone, true); // interpret null as "don't assign"
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(newVal);
if (overrideType != null)
{
ctx.Cast(field.FieldType);
}
ctx.StoreValue(field);
ctx.MarkLabel(allDone);
}
}
}
}
}
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 (factory != null)
{
EmitInvokeCallback(ctx, factory, false);
}
else if (!useConstructor)
{ // DataContractSerializer style
ctx.LoadValue(constructType);
ctx.EmitCall(ctx.MapType(typeof(BclHelpers)).GetMethod("GetUninitializedObject"));
ctx.Cast(forType);
}
else if (constructType.IsClass && hasConstructor)
{ // XmlSerializer style
ctx.EmitCtor(constructType);
}
else
{
ctx.LoadValue(type);
ctx.EmitCall(ctx.MapType(typeof(TypeModel)).GetMethod("ThrowCannotCreateInstance",
BindingFlags.Static | BindingFlags.Public));
ctx.LoadNullRef();
callNoteObject = false;
}
if (callNoteObject)
{
// track root object creation
ctx.CopyValue();
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("NoteObject",
BindingFlags.Static | BindingFlags.Public));
}
if (baseCtorCallbacks != null)
{
for (int i = 0; i < baseCtorCallbacks.Length; i++)
{
EmitInvokeCallback(ctx, baseCtorCallbacks[i], true);
}
}
if (callbacks != null)
{
EmitInvokeCallback(ctx, callbacks.BeforeDeserialize, true);
}
ctx.StoreValue(storage);
ctx.MarkLabel(afterNullCheck);
}
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (ctx.StartDebugBlockAuto(this))
{
using (Compiler.Local value = ctx.GetLocalWithValueForEmitRead(this, valueFrom))
using (Compiler.Local converted = new Compiler.Local(ctx, _declaredType)) // declare/re-use local
using (Compiler.Local reservedTrap = new Compiler.Local(ctx, typeof(int)))
{
var g = ctx.G;
if (!ExpectedType.IsValueType)
{
g.Assign(reservedTrap, g.ReaderFunc.ReserveNoteObject_int());
}
ctx.LoadValue(value); // load primary onto stack
ctx.EmitCall(_toTail); // static convert op, primary-to-surrogate
ctx.StoreValue(converted); // store into surrogate local
_rootTail.EmitRead(ctx, _rootTail.RequiresOldValue ? converted : null); // downstream processing against surrogate local
if (_rootTail.EmitReadReturnsValue)
{
ctx.StoreValue(converted);
}
ctx.LoadValue(converted); // load from surrogate local
ctx.EmitCall(_fromTail); // static convert op, surrogate-to-primary
ctx.StoreValue(value); // store back into primary
if (!ExpectedType.IsValueType)
{
g.Reader.NoteReservedTrappedObject(reservedTrap, value);
}
if (EmitReadReturnsValue)
{
ctx.LoadValue(value);
}
}
}
}
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)
{
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);
}
}
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 UcAsp.RPC.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 (Helpers.IsValueType(type) || !recursionCheck)
{
ctx.LoadNullRef();
}
else
{
ctx.CopyValue();
}
}
ctx.LoadReaderWriter();
ctx.EmitCall(Helpers.GetStaticMethod(rwType, "StartSubItem",
read ? new Type[] { rwType } : new Type[] { ctx.MapType(typeof(object)), rwType }));
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(Helpers.GetStaticMethod(rwType, "EndSubItem", new Type[] { ctx.MapType(typeof(SubItemToken)), rwType }));
}
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
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);
}
}
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 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);
}
public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (ctx.StartDebugBlockAuto(this))
{
var g = ctx.G;
using (var value = ctx.GetLocalWithValueForEmitRead(this, valueFrom))
{
_subTypeHelpers.EmitTryRead(
g,
value,
_model[_typeKey],
r =>
{
using (ctx.StartDebugBlockAuto(this, "returnGen"))
{
if (r == null)
{
g.If(value.AsOperand == null);
{
g.ThrowProtoException(CantCreateInstanceMessage);
}
g.End();
g.Reader.NoteObject(value);
}
else
{
r.Serializer.EmitCreateInstance(ctx);
ctx.StoreValue(value);
}
g.Reader.NoteLateReference(ctx.MapMetaKeyToCompiledKey(_baseTypeKey), value);
}
});
if (EmitReadReturnsValue)
{
ctx.LoadValue(value);
}
}
}
}
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 (expectedType.IsValueType)
{
ctx.LoadAddress(valOrNull, expectedType);
ctx.LoadValue(expectedType.GetProperty("HasValue"));
}
else
{
ctx.LoadValue(valOrNull);
}
Compiler.CodeLabel @end = ctx.DefineLabel();
ctx.BranchIfFalse(@end, false);
if (expectedType.IsValueType)
{
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 void WriteFieldHandler(
Compiler.CompilerContext ctx, Type expected, Compiler.Local loc,
Compiler.CodeLabel handler, Compiler.CodeLabel @continue, IProtoSerializer serializer)
{
ctx.MarkLabel(handler);
if (serializer.ExpectedType == forType)
{
EmitCreateIfNull(ctx, expected, loc);
serializer.EmitRead(ctx, loc);
}
else
{
ctx.LoadValue(loc);
ctx.Cast(serializer.ExpectedType);
serializer.EmitRead(ctx, null);
}
if (serializer.ReturnsValue)
{ // update the variable
ctx.StoreValue(loc);
}
ctx.Branch(@continue, false); // "continue"
}
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();
}
}
}
private static void EmitReadAndAddItem(Compiler.CompilerContext ctx, Compiler.Local list, IProtoSerializer tail, MethodInfo add, bool castListForAdd)
{
ctx.LoadAddress(list, list.Type); // needs to be the reference in case the list is value-type (static-call)
if (castListForAdd)
{
ctx.Cast(add.DeclaringType);
}
Type itemType = tail.ExpectedType;
bool tailReturnsValue = tail.ReturnsValue;
if (tail.RequiresOldValue)
{
if (itemType.IsValueType || !tailReturnsValue)
{
// 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 (!tailReturnsValue)
{
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 (tailReturnsValue)
{ // 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 == ctx.MapType(typeof(object)))
{
ctx.CastToObject(itemType);
}
else if (Helpers.GetUnderlyingType(addParamType) == itemType)
{ // list is nullable
ConstructorInfo ctor = Helpers.GetConstructor(addParamType, new Type[] { itemType }, false);
ctx.EmitCtor(ctor); // the itemType on the stack is now a Nullable<ItemType>
}
else
{
throw new InvalidOperationException("Conflicting item/add type");
}
}
ctx.EmitCall(add);
if (add.ReturnType != ctx.MapType(typeof(void)))
{
ctx.DiscardValue();
}
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ProtoTypeCode typeCode = GetTypeCode();
if (map == null)
{
ctx.EmitBasicRead("ReadInt32", ctx.MapType(typeof(int)));
ctx.ConvertFromInt32(typeCode, false);
}
else
{
int[] wireValues = new int[map.Length];
object[] values = new object[map.Length];
for (int i = 0; i < map.Length; i++)
{
wireValues[i] = map[i].WireValue;
values[i] = map[i].RawValue;
}
using (Compiler.Local result = new Compiler.Local(ctx, ExpectedType))
using (Compiler.Local wireValue = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
ctx.EmitBasicRead("ReadInt32", ctx.MapType(typeof(int)));
ctx.StoreValue(wireValue);
Compiler.CodeLabel @continue = ctx.DefineLabel();
foreach (BasicList.Group group in BasicList.GetContiguousGroups(wireValues, values))
{
Compiler.CodeLabel tryNextGroup = ctx.DefineLabel();
int groupItemCount = group.Items.Count;
if (groupItemCount == 1)
{
// discreet group; use an equality test
ctx.LoadValue(wireValue);
ctx.LoadValue(group.First);
Compiler.CodeLabel processThisValue = ctx.DefineLabel();
ctx.BranchIfEqual(processThisValue, true);
ctx.Branch(tryNextGroup, false);
WriteEnumValue(ctx, typeCode, processThisValue, @continue, group.Items[0], @result);
}
else
{
// implement as a jump-table-based switch
ctx.LoadValue(wireValue);
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(tryNextGroup, false);
for (int i = 0; i < groupItemCount; i++)
{
WriteEnumValue(ctx, typeCode, jmp[i], @continue, group.Items[i], @result);
}
}
ctx.MarkLabel(tryNextGroup);
}
// throw source.CreateEnumException(ExpectedType, wireValue);
ctx.LoadReaderWriter();
ctx.LoadValue(ExpectedType);
ctx.LoadValue(wireValue);
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("ThrowEnumException"));
ctx.MarkLabel(@continue);
ctx.LoadValue(result);
}
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (ctx.StartDebugBlockAuto(this))
{
Type voidType = ctx.MapType(typeof(void));
using (Compiler.Local value = ctx.GetLocalWithValueForEmitRead(this, valueFrom))
using (Compiler.Local builderInstance = new Compiler.Local(ctx, _builderFactory.ReturnType))
using (Compiler.Local trappedKey = new Compiler.Local(ctx, typeof(int)))
{
ctx.G.Assign(trappedKey, ctx.G.ReaderFunc.ReserveNoteObject_int());
ctx.EmitCall(_builderFactory);
ctx.StoreValue(builderInstance);
if (AppendToCollection)
{
Compiler.CodeLabel done = ctx.DefineLabel();
if (!ExpectedType.IsValueType)
{
ctx.LoadValue(value);
ctx.BranchIfFalse(done, false); // old value null; nothing to add
}
PropertyInfo prop = Helpers.GetProperty(ExpectedType, "Length", false) ?? Helpers.GetProperty(ExpectedType, "Count", false);
#if !NO_GENERICS
if (prop == null)
{
prop = Helpers.GetProperty(ResolveIReadOnlyCollection(ExpectedType, Tail.ExpectedType), "Count", false);
}
#endif
ctx.LoadAddress(value, value.Type);
ctx.EmitCall(Helpers.GetGetMethod(prop, false, false));
ctx.BranchIfFalse(done, false); // old list is empty; nothing to add
if (_addRange != null)
{
ctx.LoadValue(builderInstance);
ctx.LoadValue(value);
ctx.EmitCall(_addRange);
if (_addRange.ReturnType != null && _add.ReturnType != voidType)
{
ctx.DiscardValue();
}
}
else
{
// loop and call Add repeatedly
MethodInfo moveNext, current, getEnumerator = GetEnumeratorInfo(ctx.Model, out moveNext, out current);
Helpers.DebugAssert(moveNext != null);
Helpers.DebugAssert(current != null);
Helpers.DebugAssert(getEnumerator != null);
Type enumeratorType = getEnumerator.ReturnType;
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
{
ctx.LoadAddress(value, ExpectedType);
ctx.EmitCall(getEnumerator);
ctx.StoreValue(iter);
using (ctx.Using(iter))
{
Compiler.CodeLabel body = ctx.DefineLabel(), next = ctx.DefineLabel();
ctx.Branch(next, false);
ctx.MarkLabel(body);
ctx.LoadAddress(builderInstance, builderInstance.Type);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(current);
ctx.EmitCall(_add);
if (_add.ReturnType != null && _add.ReturnType != voidType)
{
ctx.DiscardValue();
}
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext);
ctx.BranchIfTrue(body, false);
}
}
}
ctx.MarkLabel(done);
}
ListHelpers.EmitRead(
ctx.G,
null,
null,
o =>
{
using (ctx.StartDebugBlockAuto(this, "add"))
{
ctx.LoadAddress(builderInstance, builderInstance.Type);
ctx.LoadValue(o);
ctx.EmitCall(_add);
if (_add.ReturnType != null && _add.ReturnType != voidType)
{
ctx.DiscardValue();
}
}
});
ctx.LoadAddress(builderInstance, builderInstance.Type);
ctx.EmitCall(_finish);
if (ExpectedType != _finish.ReturnType)
{
ctx.Cast(ExpectedType);
}
ctx.StoreValue(value);
ctx.G.Reader.NoteReservedTrappedObject(trappedKey, value);
if (EmitReadReturnsValue)
{
ctx.LoadValue(value);
}
}
}
}
private void WriteFieldHandler(
Compiler.CompilerContext ctx, Type expected, Compiler.Local loc,
Compiler.CodeLabel handler, Compiler.CodeLabel @continue, IProtoSerializer serializer)
{
ctx.MarkLabel(handler);
Type serType = serializer.ExpectedType;
if (serType == ExpectedType)
{
EmitCreateIfNull(ctx, loc);
serializer.EmitRead(ctx, loc);
}
else
{
//RuntimeTypeModel rtm = (RuntimeTypeModel)ctx.Model;
if (((IProtoTypeSerializer)serializer).CanCreateInstance())
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.BranchIfFalse(allDone, false); // null is always ok
ctx.LoadValue(loc);
ctx.TryCast(serType);
ctx.BranchIfTrue(allDone, false); // not null, but of the correct type
// otherwise, need to convert it
ctx.LoadReader(false);
ctx.LoadValue(loc);
((IProtoTypeSerializer)serializer).EmitCreateInstance(ctx);
ctx.EmitCall(typeof(ProtoReader).GetMethod("Merge",
new[] { typeof(ProtoReader), typeof(object), typeof(object) }));
ctx.Cast(expected);
ctx.StoreValue(loc); // Merge always returns a value
// nothing needs doing
ctx.MarkLabel(allDone);
}
if (Helpers.IsValueType(serType))
{
Compiler.CodeLabel initValue = ctx.DefineLabel();
Compiler.CodeLabel hasValue = ctx.DefineLabel();
using (Compiler.Local emptyValue = new Compiler.Local(ctx, serType))
{
ctx.LoadValue(loc);
ctx.BranchIfFalse(initValue, false);
ctx.LoadValue(loc);
ctx.CastFromObject(serType);
ctx.Branch(hasValue, false);
ctx.MarkLabel(initValue);
ctx.InitLocal(serType, emptyValue);
ctx.LoadValue(emptyValue);
ctx.MarkLabel(hasValue);
}
}
else
{
ctx.LoadValue(loc);
ctx.Cast(serType);
}
serializer.EmitRead(ctx, null);
}
if (serializer.ReturnsValue)
{ // update the variable
if (Helpers.IsValueType(serType))
{
// but box it first in case of value type
ctx.CastToObject(serType);
}
ctx.StoreValue(loc);
}
ctx.Branch(@continue, false); // "continue"
}
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 (!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, 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 (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(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)
{
using (Compiler.Local oldList = AppendToCollection ? ctx.GetLocalWithValue(ExpectedType, valueFrom) : null)
using (Compiler.Local builder = new Compiler.Local(ctx, builderFactory.ReturnType))
{
ctx.EmitCall(builderFactory);
ctx.StoreValue(builder);
if (AppendToCollection)
{
Compiler.CodeLabel done = ctx.DefineLabel();
if (!Helpers.IsValueType(ExpectedType))
{
ctx.LoadValue(oldList);
ctx.BranchIfFalse(done, false); // old value null; nothing to add
}
#if COREFX
TypeInfo typeInfo = ExpectedType.GetTypeInfo();
#else
Type typeInfo = ExpectedType;
#endif
PropertyInfo prop = Helpers.GetProperty(typeInfo, "Length", false);
if (prop == null)
{
prop = Helpers.GetProperty(typeInfo, "Count", false);
}
#if !NO_GENERICS
if (prop == null)
{
prop = Helpers.GetProperty(ResolveIReadOnlyCollection(ExpectedType, Tail.ExpectedType), "Count", false);
}
#endif
ctx.LoadAddress(oldList, oldList.Type);
ctx.EmitCall(Helpers.GetGetMethod(prop, false, false));
ctx.BranchIfFalse(done, false); // old list is empty; nothing to add
Type voidType = ctx.MapType(typeof(void));
if (addRange != null)
{
ctx.LoadValue(builder);
ctx.LoadValue(oldList);
ctx.EmitCall(addRange);
if (addRange.ReturnType != null && add.ReturnType != voidType)
{
ctx.DiscardValue();
}
}
else
{
// loop and call Add repeatedly
MethodInfo moveNext, current, getEnumerator = GetEnumeratorInfo(ctx.Model, out moveNext, out current);
Helpers.DebugAssert(moveNext != null);
Helpers.DebugAssert(current != null);
Helpers.DebugAssert(getEnumerator != null);
Type enumeratorType = getEnumerator.ReturnType;
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
{
ctx.LoadAddress(oldList, ExpectedType);
ctx.EmitCall(getEnumerator);
ctx.StoreValue(iter);
using (ctx.Using(iter))
{
Compiler.CodeLabel body = ctx.DefineLabel(), next = ctx.DefineLabel();
ctx.Branch(next, false);
ctx.MarkLabel(body);
ctx.LoadAddress(builder, builder.Type);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(current);
ctx.EmitCall(add);
if (add.ReturnType != null && add.ReturnType != voidType)
{
ctx.DiscardValue();
}
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext);
ctx.BranchIfTrue(body, false);
}
}
}
ctx.MarkLabel(done);
}
EmitReadList(ctx, builder, Tail, add, packedWireType, false);
ctx.LoadAddress(builder, builder.Type);
ctx.EmitCall(finish);
if (ExpectedType != finish.ReturnType)
{
ctx.Cast(ExpectedType);
}
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
SanityCheck(property, Tail, out bool writeValue, ctx.NonPublic, ctx.AllowInternal(property));
if (ExpectedType.IsValueType && valueFrom is null)
{
throw new InvalidOperationException("Attempt to mutate struct on the head of the stack; changes would be lost");
}
using Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom);
if (Tail.RequiresOldValue)
{
ctx.LoadAddress(loc, ExpectedType); // stack is: old-addr
ctx.LoadValue(property); // stack is: old-value
}
Type propertyType = property.PropertyType;
ctx.ReadNullCheckedTail(propertyType, Tail, null); // stack is [new-value]
if (writeValue)
{
var localType = ChooseReadLocalType(property.PropertyType, Tail.ExpectedType);
using Compiler.Local newVal = new Compiler.Local(ctx, localType);
ctx.StoreValue(newVal); // stack is empty
Compiler.CodeLabel allDone = new Compiler.CodeLabel(); // <=== default structs
if (!localType.IsValueType)
{ // if the tail returns a null, intepret that as *no assign*
allDone = ctx.DefineLabel();
ctx.LoadValue(newVal); // stack is: new-value
ctx.BranchIfFalse(@allDone, true); // stack is empty
}
// assign the value
ctx.LoadAddress(loc, ExpectedType); // parent-addr
ctx.LoadValue(newVal); // parent-obj|new-value
// cast if needed (this is mostly for ReadMap/ReadRepeated)
if (!property.PropertyType.IsValueType && !localType.IsValueType &&
!property.PropertyType.IsAssignableFrom(localType))
{
ctx.Cast(property.PropertyType);
}
if (shadowSetter is null)
{
ctx.StoreValue(property); // empty
}
else
{
ctx.EmitCall(shadowSetter); // empty
}
if (!propertyType.IsValueType)
{
ctx.MarkLabel(allDone);
}
}
else
{ // don't want return value; drop it if anything there
// stack is [new-value]
if (Tail.ReturnsValue)
{
ctx.DiscardValue();
}
}
}
} // updates field directly
#if FEAT_COMPILER
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];
Type serType = ser.ExpectedType;
if (serType != forType)
{
Compiler.CodeLabel ifMatch = ctx.DefineLabel(), nextTest = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.TryCast(serType);
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, ctx.MapType(typeof(System.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(ctx.MapType(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(ctx.MapType(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(ctx.MapType(typeof(object)).GetMethod("GetType"));
ctx.EmitCall(ctx.MapType(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(ctx.MapType(typeof(ProtoWriter)).GetMethod("AppendExtensionData"));
}
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterSerialize);
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local oldList = AppendToCollection ? ctx.GetLocalWithValue(ExpectedType, valueFrom) : null)
using (Compiler.Local builder = new Compiler.Local(ctx, builderFactory.ReturnType))
{
ctx.EmitCall(builderFactory);
ctx.StoreValue(builder);
if (AppendToCollection)
{
Compiler.CodeLabel done = ctx.DefineLabel();
if (!Helpers.IsValueType(ExpectedType))
{
ctx.LoadValue(oldList);
ctx.BranchIfFalse(done, false); // old value null; nothing to add
}
ctx.LoadAddress(oldList, oldList.Type);
if (isEmpty != null)
{
ctx.EmitCall(Helpers.GetGetMethod(isEmpty, false, false));
ctx.BranchIfTrue(done, false); // old list is empty; nothing to add
}
else
{
ctx.EmitCall(Helpers.GetGetMethod(length, false, false));
ctx.BranchIfFalse(done, false); // old list is empty; nothing to add
}
Type voidType = typeof(void);
if (addRange != null)
{
ctx.LoadValue(builder);
ctx.LoadValue(oldList);
ctx.EmitCall(addRange);
if (addRange.ReturnType != null && add.ReturnType != voidType)
{
ctx.DiscardValue();
}
}
else
{
// loop and call Add repeatedly
MethodInfo moveNext, current, getEnumerator = GetEnumeratorInfo(out moveNext, out current);
Helpers.DebugAssert(moveNext != null);
Helpers.DebugAssert(current != null);
Helpers.DebugAssert(getEnumerator != null);
Type enumeratorType = getEnumerator.ReturnType;
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
{
ctx.LoadAddress(oldList, ExpectedType);
ctx.EmitCall(getEnumerator);
ctx.StoreValue(iter);
using (ctx.Using(iter))
{
Compiler.CodeLabel body = ctx.DefineLabel(), next = ctx.DefineLabel();
ctx.Branch(next, false);
ctx.MarkLabel(body);
ctx.LoadAddress(builder, builder.Type);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(current);
ctx.EmitCall(add);
if (add.ReturnType != null && add.ReturnType != voidType)
{
ctx.DiscardValue();
}
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext);
ctx.BranchIfTrue(body, false);
}
}
}
ctx.MarkLabel(done);
}
EmitReadList(ctx, builder, Tail, add, packedWireType, false);
ctx.LoadAddress(builder, builder.Type);
ctx.EmitCall(finish);
if (ExpectedType != finish.ReturnType)
{
ctx.Cast(ExpectedType);
}
}
}
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, ctx.MapType(typeof(int))))
{
// pre-callbacks
if (HasCallbacks(TypeModel.CallbackType.BeforeDeserialize))
{
if (ExpectedType.IsValueType)
{
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.BeforeDeserialize);
}
else
{ // could be null
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, loc);
ctx.LoadReaderWriter();
if (isExtensible)
{
ctx.LoadValue(loc);
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("AppendExtensionData"));
}
else
{
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);
EmitCreateIfNull(ctx, loc);
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterDeserialize);
if (valueFrom != null && !loc.IsSame(valueFrom))
{
ctx.LoadValue(loc);
ctx.Cast(valueFrom.Type);
ctx.StoreValue(valueFrom);
}
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (ctx.StartDebugBlockAuto(this, _property.Name))
{
var g = ctx.G;
bool canSet;
SanityCheck(ctx.Model, _property, Tail, out canSet, ctx.NonPublic, ctx.AllowInternal(_property), true);
using (Compiler.Local loc = ctx.GetLocalWithValueForEmitRead(this, valueFrom))
using (Compiler.Local oldVal = canSet ? new Compiler.Local(ctx, _property.PropertyType) : null)
using (Compiler.Local newVal = new Compiler.Local(ctx, _property.PropertyType))
{
Compiler.Local valueForTail = null;
if (Tail.RequiresOldValue)
{
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(_property);
if (!oldVal.IsNullRef())
{
if (Tail.RequiresOldValue) // we need it later
{
ctx.CopyValue();
}
ctx.StoreValue(oldVal);
}
}
if (Tail.RequiresOldValue) // !here! <-- we need value again
{
if (!Tail.EmitReadReturnsValue)
{
ctx.StoreValue(newVal);
valueForTail = newVal;
} // otherwise valueForTail = null (leave value on stack)
}
Tail.EmitRead(ctx, valueForTail);
// otherwise newVal was passed to EmitRead so already has necessary data
if (Tail.EmitReadReturnsValue)
{
ctx.StoreValue(newVal);
}
// check-condition:
//(!Tail.RequiresOldValue // always set where can't check oldVal
// // and if it's value type or nullable with changed null/not null or ref
// || (Helpers.IsValueType(property.PropertyType) && oldVal != null && newVal != null)
// || !ReferenceEquals(oldVal, newVal)
// ))
if (canSet)
{
bool check = Tail.RequiresOldValue;
if (check)
{
var condition = !g.StaticFactory.InvokeReferenceEquals(oldVal, newVal);
if (Helpers.IsValueType(_property.PropertyType))
{
condition = (oldVal.AsOperand != null && newVal.AsOperand != null) || condition;
}
g.If(condition);
}
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(newVal);
if (_shadowSetter == null)
{
ctx.StoreValue(_property);
}
else
{
ctx.EmitCall(_shadowSetter);
}
if (check)
{
g.End();
}
}
if (EmitReadReturnsValue)
{
ctx.LoadValue(loc);
}
}
}
}
