/// <summary>
/// Creates an expression reading the specified struct type.
/// </summary>
private static LambdaExpression CreateReaderForStruct(ThriftStruct thriftStruct)
{
var protocolParam = Expression.Parameter(typeof(IThriftProtocol));
var structType = thriftStruct.TypeInfo.AsType();
var structVar = Expression.Variable(structType);
var wireFields = thriftStruct.Fields.Select(f => ThriftWireField.Field(f, structVar)).ToList();
return(Expression.Lambda(
Expression.Block(
structType,
new[] { structVar },
Expression.Assign(
structVar,
Expression.New(structType)
),
CreateReaderForFields(protocolParam, wireFields),
// return value
structVar
),
protocolParam
));
}
/// <summary>
/// Creates an expression writing the specified struct type.
/// </summary>
private static LambdaExpression CreateWriterForStruct(ThriftStruct thriftStruct)
{
var valueParam = Expression.Parameter(thriftStruct.TypeInfo.AsType());
var protocolParam = Expression.Parameter(typeof(IThriftProtocol));
var methodContents = new List <Expression>
{
Expression.Call(
protocolParam,
Methods.IThriftProtocol_WriteStructHeader,
Expression.New(
Constructors.ThriftStructHeader,
Expression.Constant(thriftStruct.Header.Name)
)
)
};
foreach (var field in thriftStruct.Fields)
{
methodContents.Add(CreateWriterForField(protocolParam, ThriftWireField.Field(field, valueParam)));
}
methodContents.Add(Expression.Call(protocolParam, Methods.IThriftProtocol_WriteFieldStop));
methodContents.Add(Expression.Call(protocolParam, Methods.IThriftProtocol_WriteStructEnd));
return(Expression.Lambda(
Expression.Block(methodContents),
valueParam, protocolParam
));
}
