Splits the command buffers into common commands...

command_buffer/service/cross/cmd_parser.h

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 59 matching lines @@
   // Checks whether there are commands to process.
   bool IsEmpty() const { return put_ == get_; }
 
   // Processes one command, updating the get pointer. This will return an error
   // if there are no commands in the buffer.
   parse_error::ParseError ProcessCommand();
 
   // Processes all commands until get == put.
   parse_error::ParseError ProcessAllCommands();
 
+  // Reports an error.
+  void ReportError(unsigned int command_id, parse_error::ParseError result);
+
  private:
   CommandBufferOffset get_;
   CommandBufferOffset put_;
   CommandBufferEntry *buffer_;
   size_t entry_count_;
   AsyncAPIInterface *handler_;
 };
 
 // This class defines the interface for an asynchronous API handler, that
 // is responsible for de-multiplexing commands and their arguments.
 class AsyncAPIInterface {
  public:
   AsyncAPIInterface() {}
   virtual ~AsyncAPIInterface() {}
 
   // Executes a command.
   // Parameters:
   //    command: the command index.
   //    arg_count: the number of CommandBufferEntry arguments.
   //    cmd_data: the command data.
   // Returns:
   //   parse_error::NO_ERROR if no error was found, one of
   //   parse_error::ParseError otherwise.
   virtual parse_error::ParseError DoCommand(
       unsigned int command,
       unsigned int arg_count,
       const void* cmd_data) = 0;
+
+  // Returns a name for a command. Useful for logging / debuging.
+  virtual const char* GetCommandName(unsigned int command_id) const = 0;
 };
 
 }  // namespace command_buffer
 }  // namespace o3d
 
 #endif  // O3D_COMMAND_BUFFER_SERVICE_CROSS_CMD_PARSER_H_