// parameters.h -- general parameters for a link using gold  -*- C++ -*-

#ifndef GOLD_PARAMETERS_H
#define GOLD_PARAMETERS_H

namespace gold
{

class General_options;

// Here we define the Parameters class which simply holds simple
// general parameters which apply to the entire link.  We use a global
// variable for this.  This is in contrast to the General_options
// class, which holds the complete state of position independent
// command line options.  The hope is that Parameters will stay fairly
// simple, so that if this turns into a library it will be clear how
// these parameters should be set.

class Parameters
{
 public:
  Parameters(const General_options*);

  // Whether we are generating a regular executable.
  bool
  output_is_executable() const
  { return this->output_file_type_ == OUTPUT_EXECUTABLE; }

  // Whether we are generating a shared library.
  bool
  output_is_shared() const
  { return this->output_file_type_ == OUTPUT_SHARED; }

  // Whether we are generating an object file.
  bool
  output_is_object() const
  { return this->output_file_type_ == OUTPUT_OBJECT; }

  // The general linker optimization level.
  int
  optimization_level() const
  { return this->optimization_level_; }

 private:
  // The types of output files.
  enum Output_file_type
    {
      // Generating executable.
      OUTPUT_EXECUTABLE,
      // Generating shared library.
      OUTPUT_SHARED,
      // Generating object file.
      OUTPUT_OBJECT
    };

  // The type of the output file.
  Output_file_type output_file_type_;
  // The optimization level.
  int optimization_level_;
};

// This is a global variable.
extern const Parameters* parameters;

// Initialize the global variable.
extern void initialize_parameters(const General_options*);

} // End namespace gold.

#endif // !defined(GOLD_PARAMATERS_H)