vhdl.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/vhdl/vhdl.h"
 
#include <vector>
#include <string>
#include <memory>
 
#include "cerata/logging.h"
#include "cerata/utils.h"
 
#include "cerata/vhdl/defaults.h"
 
namespace cerata::vhdl {
 
void VHDLOutputGenerator::Generate() {
  // Make sure the subdirectory exists.
  CreateDir(root_dir_ + "/" + subdir());
  size_t num_graphs = 0;
  for (const auto &o : outputs_) {
    // Check if output spec is valid
    if (o.comp == nullptr) {
      CERATA_LOG(ERROR, "OutputSpec contained no component.");
      continue;
    }
 
    CERATA_LOG(DEBUG, "VHDL: Transforming Component " + o.comp->name() + " to VHDL-compatible version.");
    auto vhdl_design = Design(o.comp, notice_, DEFAULT_LIBS);
 
    CERATA_LOG(DEBUG, "VHDL: Generating sources for component " + o.comp->name());
    auto vhdl_source = vhdl_design.Generate().ToString();
    auto vhdl_path = root_dir_ + "/" + subdir() + "/" + o.comp->name() + ".gen.vhd";
 
    // Disable backup by default.
    bool backup = (o.meta.count(meta::BACKUP_EXISTING) > 0) && (o.meta.at(meta::BACKUP_EXISTING) == "true");
 
    CERATA_LOG(DEBUG, "VHDL: Saving design to: " + vhdl_path);
    if (!FileExists(vhdl_path) || !backup) {
      auto vhdl_file = std::ofstream(vhdl_path);
      vhdl_file << vhdl_source;
      vhdl_file.close();
    } else {
      CERATA_LOG(DEBUG, "VHDL: File exists, backing up and saving to " + vhdl_path + "t");
      // Copy the old file.
      auto original = std::ifstream(vhdl_path, std::ios::binary);
      auto copy = std::ofstream(vhdl_path + ".bak", std::ios::binary);
      copy << original.rdbuf();
      // Save the new file.
      auto vhdl_file = std::ofstream(vhdl_path);
      vhdl_file << vhdl_source;
    }
 
    num_graphs++;
  }
  CERATA_LOG(DEBUG, "VHDL: Generated output for " + std::to_string(num_graphs) + " graphs.");
}
 
}  // namespace cerata::vhdl