build-system-toy/command_builder.h

#pragma once

#include <iostream>
#include <sstream>
#include <string>

#include "types.h"

namespace build {
  class command_builder {
  private:
    indent_t indent_;
    std::stringstream buffer_;

  public:
    command_builder(std::string const & cmd, int indent = 0);

    template <typename T> command_builder && operator<<(T const & value) &&;
    template <typename T> command_builder & operator<<(T const & value) &;
    template <typename T>
    command_builder & operator<<(std::vector<T> const & value) &;

    int execute() const;

  private:
    template <typename T> void write(T const & value) { buffer_ << value; }
    void write(version const & vers);
    void write(source_file const & file);
    void write(output_file const & file);
  };
}