stream.cc

// Copyright 2018-2019 Delft University of Technology
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#include "cerata/stream.h"
 
#include <utility>
 
#include "cerata/type.h"
 
namespace cerata {
 
Stream &Stream::SetElementType(std::shared_ptr<Type> type) {
  // Invalidate mappers that point to this type from the other side
  for (auto &mapper : mappers_) {
    mapper->b()->RemoveMappersTo(this);
  }
  // Invalidate all mappers from this type
  mappers_ = {};
  // Set the new element type
  fields_.back()->SetType(std::move(type));
 
  return *this;
}
 
Stream::Stream(const std::string &name,
               const std::string &data_name,
               const std::shared_ptr<Type> &data_type,
               const std::vector<std::shared_ptr<Field>> &control)
    : Record(name) {
  for (const auto &f : control) {
    AddField(f);
  }
  AddField(field(data_name, data_type));
}
 
std::shared_ptr<Type> Stream::valid() {
  static auto result = bit("valid");
  return result;
}
 
std::shared_ptr<Type> Stream::ready() {
  static auto result = bit("ready");
  return result;
}
 
std::shared_ptr<Stream> stream(const std::string &name,
                               const std::string &element_name,
                               const std::shared_ptr<Type> &element_type,
                               const std::vector<std::shared_ptr<Field>> &control) {
  return std::make_shared<Stream>(name, element_name, element_type, control);
}
 
std::shared_ptr<Stream> stream(const std::string &element_name, const std::shared_ptr<Type> &element_type) {
  return stream(element_name + "_stream", element_name, element_type);
}
 
std::shared_ptr<Stream> stream(const std::shared_ptr<Type> &element_type) {
  return stream(element_type->name(), element_type);
}
 
}  // namespace cerata