Initial CVS checkin of gold

1 files changed, 174 insertions, 0 deletions

diff --git a/gold/options.h b/gold/options.h
new file mode 100644
index 0000000..082927f
--- /dev/null
+++ b/gold/options.h
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+// options.h -- handle command line options for gold  -*- C++ -*-
+
+// Command_line
+//   Holds everything we get from the command line.
+// General_options (from Command_line::options())
+//   Options which are not position dependent.
+// Input_argument (from Command_line::inputs())
+//   The list of input files, including -l options.
+// Position_dependent_options (from Input_argument::options())
+//   Position dependent options which apply to this argument.
+
+#ifndef GOLD_OPTIONS_H
+#define GOLD_OPTIONS_H
+
+#include <list>
+
+#include "gold.h"
+
+namespace gold
+{
+
+class Command_line;
+
+namespace options {
+
+class Command_line_options;
+struct One_option;
+
+} // End namespace gold::options.
+
+// The position independent options which apply to the whole link.
+// There are a lot of them.
+
+class General_options
+{
+ public:
+  General_options();
+
+  // -L: Library search path.
+  typedef std::list<const char*> Dir_list;
+
+  const Dir_list&
+  search_path() const
+  { return this->search_path_; }
+
+  // -r: Whether we are doing a relocatable link.
+  bool
+  is_relocatable() const
+  { return this->is_relocatable_; }
+
+  // --static: Whether doing a static link.
+  bool
+  is_static() const
+  { return this->is_static_; }
+
+ private:
+  friend class Command_line;
+  friend class options::Command_line_options;
+
+  void
+  add_to_search_path(const char* arg)
+  { this->search_path_.push_back(arg); }
+
+  void
+  set_relocatable()
+  { this->is_relocatable_ = true; }
+
+  void
+  set_static()
+  { this->is_static_ = true; }
+
+  Dir_list search_path_;
+  bool is_relocatable_;
+  bool is_static_;
+
+  // Don't copy this structure.
+  General_options(const General_options&);
+  General_options& operator=(const General_options&);
+};
+
+// The current state of the position dependent options.
+
+class Position_dependent_options
+{
+ public:
+  Position_dependent_options();
+
+  // -Bstatic: Whether we are searching for a static archive rather
+  // -than a shared object.
+  bool
+  do_static_search()
+  { return this->do_static_search_; }
+
+ private:
+  friend class Command_line;
+  friend class options::Command_line_options;
+
+  void
+  set_static_search()
+  { this->do_static_search_ = true; }
+
+  void
+  set_dynamic_search()
+  { this->do_static_search_ = false; }
+
+  bool do_static_search_;
+};
+
+// A single file or library argument from the command line.
+
+class Input_argument
+{
+ public:
+  Input_argument(const char* name, const Position_dependent_options& options)
+    : name_(name), options_(options)
+  { }
+
+  const char*
+  name() const
+  { return this->name_; }
+
+  const Position_dependent_options&
+  options() const
+  { return this->options_; }
+
+  bool
+  is_lib() const
+  { return this->name_[0] == '-' && this->name_[1] == 'l'; }
+
+  const char*
+  lib_basename() const
+  { return this->name_ + 2; }
+
+ private:
+  const char* name_;
+  Position_dependent_options options_;
+};
+
+// All the information read from the command line.
+
+class Command_line
+{
+ public:
+  Command_line();
+
+  // Process the command line options.  This will exit with an
+  // appropriate error message if an unrecognized option is seen.
+  void
+  process(int argc, char** argv);
+
+  const General_options&
+  options() const
+  { return this->options_; }
+
+  typedef std::list<Input_argument> Input_argument_list;
+
+  const Input_argument_list&
+  inputs() const
+  { return this->inputs_; }
+
+ private:
+  void usage() ATTRIBUTE_NORETURN;
+  void usage(const char* msg, const char* opt) ATTRIBUTE_NORETURN;
+  void usage(const char* msg, char opt) ATTRIBUTE_NORETURN;
+  void apply_option(const gold::options::One_option&, const char*);
+
+  General_options options_;
+  Position_dependent_options position_options_;
+  Input_argument_list inputs_;
+};
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_OPTIONS_H)