protected override void EmitWrite(CompilerContext ctx, Local valueFrom)
{
Type itemType = typeof(KeyValuePair <TKey, TValue>);
MethodInfo moveNext, current, getEnumerator = ListDecorator.GetEnumeratorInfo(ctx.Model,
ExpectedType, itemType, out moveNext, out current);
Type enumeratorType = getEnumerator.ReturnType;
MethodInfo key = itemType.GetProperty(nameof(KeyValuePair <TKey, TValue> .Key)).GetGetMethod(),
@value = itemType.GetProperty(nameof(KeyValuePair <TKey, TValue> .Value)).GetGetMethod();
using (Compiler.Local list = ctx.GetLocalWithValue(ExpectedType, valueFrom))
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
using (Compiler.Local token = new Compiler.Local(ctx, typeof(SubItemToken)))
using (Compiler.Local kvp = new Compiler.Local(ctx, itemType))
{
ctx.LoadAddress(list, ExpectedType);
ctx.EmitCall(getEnumerator, ExpectedType);
ctx.StoreValue(iter);
using (ctx.Using(iter))
{
Compiler.CodeLabel body = ctx.DefineLabel(), next = ctx.DefineLabel();
ctx.Branch(next, false);
ctx.MarkLabel(body);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(current, enumeratorType);
if (itemType != ctx.MapType(typeof(object)) && current.ReturnType == ctx.MapType(typeof(object)))
{
ctx.CastFromObject(itemType);
}
ctx.StoreValue(kvp);
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)wireType);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("WriteFieldHeader"));
ctx.LoadNullRef();
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("StartSubItem"));
ctx.StoreValue(token);
ctx.LoadAddress(kvp, itemType);
ctx.EmitCall(key, itemType);
ctx.WriteNullCheckedTail(typeof(TKey), keyTail, null);
ctx.LoadAddress(kvp, itemType);
ctx.EmitCall(value, itemType);
ctx.WriteNullCheckedTail(typeof(TValue), Tail, null);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("EndSubItem"));
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext, enumeratorType);
ctx.BranchIfTrue(body, false);
}
}
}
