RuntimeLibrary.hh

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#ifndef RuntimeLibrary_HH
#define RuntimeLibrary_HH
 
#include <dlfcn.h>
 
#include <cstdlib>
#include <fstream>
#include <functional>
#include <iostream>
#include <string>
 
#include "casm/global/definitions.hh"
 
namespace CASM {
 
class runtime_lib_compile_error : public std::runtime_error {
 public:
  runtime_lib_compile_error(std::string _filename_base, std::string _cmd,
                            std::string _result, std::string _what);
 
  std::string filename_base;
  std::string cmd;
  std::string result;
 
  void print(std::ostream &sout) const;
};
 
class runtime_lib_shared_error : public std::runtime_error {
 public:
  runtime_lib_shared_error(std::string _filename_base, std::string _cmd,
                           std::string _result, std::string _what);
 
  std::string filename_base;
  std::string cmd;
  std::string result;
 
  void print(std::ostream &sout) const;
};
 
class RuntimeLibrary {
 public:
  RuntimeLibrary(std::string _filename_base, std::string _compile_options,
                 std::string _so_options);
 
  ~RuntimeLibrary();
 
  template <typename Signature>
  std::function<Signature> get_function(std::string function_name) const {
    std::function<Signature> func =
        reinterpret_cast<Signature *>(dlsym(m_handle, function_name.c_str()));
 
    const char *dlsym_error = dlerror();
    if (dlsym_error) {
      throw std::runtime_error(std::string(
          "Cannot load symbol " + function_name + " \n" + dlsym_error));
    }
 
    return func;
  }
 
  void rm();
 
  static std::pair<std::string, std::string> default_cxxflags();
 
  static std::pair<std::string, std::string> default_soflags();
 
  static std::pair<std::string, std::string> default_cxx();
 
  static std::pair<fs::path, std::string> default_casm_includedir();
 
  static std::pair<fs::path, std::string> default_casm_libdir();
 
  static std::pair<fs::path, std::string> default_boost_includedir();
 
  static std::pair<fs::path, std::string> default_boost_libdir();
 
 private:
  void _compile();
 
  void _load();
 
  void _close();
 
  std::string m_filename_base;
  std::string m_compile_options;
  std::string m_so_options;
 
  void *m_handle;
};
 
std::string include_path(const fs::path &dir);
 
std::string link_path(const fs::path &dir);
 
}  // namespace CASM
 
#endif