Add option file for the CLI compiler itself

1 files changed, 328 insertions, 0 deletions

diff --git a/cli/options.cxx b/cli/options.cxx
new file mode 100644
index 0000000..6aba013
--- /dev/null
+++ b/cli/options.cxx
@@ -0,0 +1,328 @@
+// This code was generated by CLI, a command line interface
+// compiler for C++.
+//
+
+#include "options.hxx"
+
+// options
+//
+
+bool const& options::
+help () const
+{
+  return help_;
+}
+
+bool const& options::
+version () const
+{
+  return version_;
+}
+
+std::string const& options::
+output_dir () const
+{
+  return output_dir_;
+}
+
+#include <string>
+#include <vector>
+#include <ostream>
+#include <sstream>
+
+namespace cli
+{
+  // unknown_option
+  //
+  unknown_option::
+  ~unknown_option () throw ()
+  {
+  }
+
+  void unknown_option::
+  print (std::ostream& os) const
+  {
+    os << "unknown option '" << option () << "'";
+  }
+
+  const char* unknown_option::
+  what () const throw ()
+  {
+    return "unknown option";
+  }
+
+  // unknown_argument
+  //
+  unknown_argument::
+  ~unknown_argument () throw ()
+  {
+  }
+
+  void unknown_argument::
+  print (std::ostream& os) const
+  {
+    os << "unknown argument '" << argument () << "'";
+  }
+
+  const char* unknown_argument::
+  what () const throw ()
+  {
+    return "unknown argument";
+  }
+
+  // missing_value
+  //
+  missing_value::
+  ~missing_value () throw ()
+  {
+  }
+
+  void missing_value::
+  print (std::ostream& os) const
+  {
+    os << "missing value for option '" << option () << "'";
+  }
+
+  const char* missing_value::
+  what () const throw ()
+  {
+    return "missing option value";
+  }
+
+  // invalid_value
+  //
+  invalid_value::
+  ~invalid_value () throw ()
+  {
+  }
+
+  void invalid_value::
+  print (std::ostream& os) const
+  {
+    os << "invalid value '" << value () << "' for option '"
+       << option () << "'";
+  }
+
+  const char* invalid_value::
+  what () const throw ()
+  {
+    return "invalid option value";
+  }
+
+  template <typename X>
+  struct parser
+  {
+    static int
+    parse (X& x, char** argv, int n)
+    {
+      if (n > 1)
+      {
+        std::istringstream is (argv[1]);
+        if (!(is >> x && is.eof ()))
+          throw invalid_value (argv[0], argv[1]);
+        return 2;
+      }
+      else
+        throw missing_value (argv[0]);
+    }
+  };
+
+  template <>
+  struct parser<bool>
+  {
+    static int
+    parse (bool& x, char**, int)
+    {
+      x = true;
+      return 1;
+    }
+  };
+
+  template <>
+  struct parser<std::string>
+  {
+    static int
+    parse (std::string& x, char** argv, int n)
+    {
+      if (n > 1)
+      {
+        x = argv[1];
+        return 2;
+      }
+      else
+        throw missing_value (argv[0]);
+    }
+  };
+
+  template <typename X>
+  struct parser<std::vector<X> >
+  {
+    static int
+    parse (std::vector<X>& v, char** argv, int n)
+    {
+      X x;
+      int i (parser<X>::parse (x, argv, n));
+      v.push_back (x);
+      return i;
+    }
+  };
+
+  template <typename X, typename T, T X::*P>
+  int
+  thunk (X& x, char** argv, int n)
+  {
+    return parser<T>::parse (x.*P, argv, n);
+  }
+}
+
+#include <map>
+#include <cstring>
+
+// options
+//
+
+options::
+options (int argc,
+         char** argv,
+         ::cli::unknown_mode opt,
+         ::cli::unknown_mode arg)
+: help_ (),
+  version_ (),
+  output_dir_ ()
+{
+  _parse (1, argc, argv, opt, arg);
+}
+
+options::
+options (int start,
+         int argc,
+         char** argv,
+         ::cli::unknown_mode opt,
+         ::cli::unknown_mode arg)
+: help_ (),
+  version_ (),
+  output_dir_ ()
+{
+  _parse (start, argc, argv, opt, arg);
+}
+
+options::
+options (int argc,
+         char** argv,
+         int& end,
+         ::cli::unknown_mode opt,
+         ::cli::unknown_mode arg)
+: help_ (),
+  version_ (),
+  output_dir_ ()
+{
+  end = _parse (1, argc, argv, opt, arg);
+}
+
+options::
+options (int start,
+         int argc,
+         char** argv,
+         int& end,
+         ::cli::unknown_mode opt,
+         ::cli::unknown_mode arg)
+: help_ (),
+  version_ (),
+  output_dir_ ()
+{
+  end = _parse (start, argc, argv, opt, arg);
+}
+
+typedef
+std::map<std::string, int (*) (options&, char**, int)>
+_cli_options_map;
+
+static _cli_options_map _cli_options_map_;
+
+struct _cli_options_map_init
+{
+  _cli_options_map_init ()
+  {
+    _cli_options_map_["--help"] = 
+    &::cli::thunk<options, bool, &options::help_>;
+    _cli_options_map_["--version"] = 
+    &::cli::thunk<options, bool, &options::version_>;
+    _cli_options_map_["--output-dir"] = 
+    &::cli::thunk<options, std::string, &options::output_dir_>;
+  }
+} _cli_options_map_init_;
+
+int options::
+_parse (int start,
+        int argc,
+        char** argv,
+        ::cli::unknown_mode opt_mode,
+        ::cli::unknown_mode arg_mode)
+{
+  bool opt (true);
+
+  for (; start < argc;)
+  {
+    const char* s (argv[start]);
+
+    if (std::strcmp (s, "--") == 0)
+    {
+      start++;
+      opt = false;
+      continue;
+    }
+
+    _cli_options_map::const_iterator i (
+      opt ? _cli_options_map_.find (s) : _cli_options_map_.end ());
+
+    if (i != _cli_options_map_.end ())
+    {
+      start += (*(i->second)) (*this, argv + start, argc - start);
+    }
+    else if (opt && s[0] == '-' && s[1] != '\0')
+    {
+      switch (opt_mode)
+      {
+        case ::cli::unknown_mode::skip:
+        {
+          start++;
+          continue;
+        }
+        case ::cli::unknown_mode::stop:
+        {
+          break;
+        }
+        case ::cli::unknown_mode::fail:
+        {
+          throw ::cli::unknown_option (s);
+        }
+      }
+
+      break;
+    }
+    else
+    {
+      switch (arg_mode)
+      {
+        case ::cli::unknown_mode::skip:
+        {
+          start++;
+          continue;
+        }
+        case ::cli::unknown_mode::stop:
+        {
+          break;
+        }
+        case ::cli::unknown_mode::fail:
+        {
+          throw ::cli::unknown_argument (s);
+        }
+      }
+
+      break;
+    }
+  }
+
+  return start;
+}
+