public Expression Container(BondDataType?expectedType, ContainerHandler handler)
{
Debug.Assert(schema.IsContainer);
var count = Expression.Variable(typeof(int), "count");
var loop = handler(
new UntaggedParser <R>(this, schema.GetElementSchema()),
Expression.Constant(schema.TypeDef.element.id),
Expression.GreaterThan(Expression.PostDecrementAssign(count), Expression.Constant(0)),
count);
return(Expression.Block(
new[] { count },
Expression.Assign(count, reader.ReadContainerBegin()),
loop,
reader.ReadContainerEnd()));
}
Expression Map(IParser parser, RuntimeSchema schema)
{
var expectedValueType = schema.HasValue ? schema.TypeDef.element.id : (BondDataType?)null;
var expectedKeyType = schema.HasValue ? schema.TypeDef.key.id : (BondDataType?)null;
return(parser.Map(expectedKeyType, expectedValueType,
(keyParser, valueParser, keyType, valueType, nextKey, nextValue, count) =>
Expression.Block(
writer.WriteContainerBegin(count, keyType, valueType),
ControlExpression.While(nextKey,
Expression.Block(
writer.WriteItemBegin(),
schema.HasValue ?
Value(keyParser, keyType, schema.GetKeySchema()) :
Value(keyParser, keyType),
writer.WriteItemEnd(),
nextValue,
writer.WriteItemBegin(),
schema.HasValue ?
Value(valueParser, valueType, schema.GetElementSchema()) :
Value(valueParser, valueType),
writer.WriteItemEnd())),
writer.WriteContainerEnd())));
}
Expression Container(IParser parser, RuntimeSchema schema)
{
var expectedValueType = schema.HasValue ? schema.TypeDef.element.id : (BondDataType?)null;
return(parser.Container(expectedValueType,
(valueParser, elementType, next, count) =>
{
var body = ControlExpression.While(next,
Expression.Block(
writer.WriteItemBegin(),
schema.HasValue ?
Value(valueParser, elementType, schema.GetElementSchema()) :
Value(valueParser, elementType),
writer.WriteItemEnd()));
var blob = parser.Blob(count);
if (blob != null)
{
body = PrunedExpression.IfThenElse(
Expression.Equal(elementType, Expression.Constant(BondDataType.BT_INT8)),
writer.WriteBytes(blob),
body);
// For binary protocols we can write blob directly using protocols's WriteBytes
// even if the container is not a blob (blob is BT_LIST of BT_INT8).
if (binaryWriter)
{
body = PrunedExpression.IfThenElse(
Expression.Equal(elementType, Expression.Constant(BondDataType.BT_UINT8)),
writer.WriteBytes(blob),
body);
}
}
return Expression.Block(
writer.WriteContainerBegin(count, elementType),
body,
writer.WriteContainerEnd());
}));
}