protected override void EmitWrite(UcAsp.RPC.ProtoBuf.Compiler.CompilerContext ctx, UcAsp.RPC.ProtoBuf.Compiler.Local valueFrom)
{
// int i and T[] arr
using (Compiler.Local arr = ctx.GetLocalWithValue(arrayType, valueFrom))
using (Compiler.Local i = new UcAsp.RPC.ProtoBuf.Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
bool writePacked = (options & OPTIONS_WritePacked) != 0;
bool fixedLengthPacked = writePacked && CanUsePackedPrefix();
using (Compiler.Local token = (writePacked && !fixedLengthPacked) ? new Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))) : null)
{
Type mappedWriter = ctx.MapType(typeof(ProtoWriter));
if (writePacked)
{
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)WireType.String);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("WriteFieldHeader"));
if (fixedLengthPacked)
{
// write directly - no need for buffering
ctx.LoadLength(arr, false);
ctx.LoadValue((int)packedWireType);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("WritePackedPrefix"));
}
else
{
ctx.LoadValue(arr);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("StartSubItem"));
ctx.StoreValue(token);
}
ctx.LoadValue(fieldNumber);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("SetPackedField"));
}
EmitWriteArrayLoop(ctx, i, arr);
if (writePacked)
{
if (fixedLengthPacked)
{
ctx.LoadValue(fieldNumber);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("ClearPackedField"));
}
else
{
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("EndSubItem"));
}
}
}
}
}
protected override void EmitRead(UcAsp.RPC.ProtoBuf.Compiler.CompilerContext ctx, UcAsp.RPC.ProtoBuf.Compiler.Local valueFrom)
{
Type listType;
#if NO_GENERICS
listType = typeof(BasicList);
#else
listType = ctx.MapType(typeof(System.Collections.Generic.List <>)).MakeGenericType(itemType);
#endif
Type expected = ExpectedType;
using (Compiler.Local oldArr = AppendToCollection ? ctx.GetLocalWithValue(expected, valueFrom) : null)
using (Compiler.Local newArr = new Compiler.Local(ctx, expected))
using (Compiler.Local list = new Compiler.Local(ctx, listType))
{
ctx.EmitCtor(listType);
ctx.StoreValue(list);
ListDecorator.EmitReadList(ctx, list, Tail, listType.GetMethod("Add"), packedWireType, false);
// leave this "using" here, as it can share the "FieldNumber" local with EmitReadList
using (Compiler.Local oldLen = AppendToCollection ? new UcAsp.RPC.ProtoBuf.Compiler.Local(ctx, ctx.MapType(typeof(int))) : null) {
Type[] copyToArrayInt32Args = new Type[] { ctx.MapType(typeof(Array)), ctx.MapType(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(expected.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] = expected; // // prefer: CopyTo(T[], int)
MethodInfo copyTo = listType.GetMethod("CopyTo", copyToArrayInt32Args);
if (copyTo == null)
{ // fallback: CopyTo(Array, int)
copyToArrayInt32Args[1] = ctx.MapType(typeof(Array));
copyTo = listType.GetMethod("CopyTo", copyToArrayInt32Args);
}
ctx.EmitCall(copyTo);
}
ctx.LoadValue(newArr);
}
}