Package java_cup

Class parser


public class parser extends lr_parser
  • Field Details

    • _production_table

      protected static final short[][] _production_table
      production table
    • _action_table

      protected static final short[][] _action_table
      parse action table
    • _reduce_table

      protected static final short[][] _reduce_table
      reduce_goto table
    • action_obj

      protected java_cup.CUP$actions action_obj
      instance of action encapsulation class
  • Constructor Details

    • parser

      public parser()
      constructor
  • Method Details

    • production_table

      public short[][] production_table()
      access to production table
      Specified by:
      production_table in class lr_parser
    • action_table

      public short[][] action_table()
      access to parse action table
      Specified by:
      action_table in class lr_parser
      See Also:
    • reduce_table

      public short[][] reduce_table()
      access to reduce_goto table
      Specified by:
      reduce_table in class lr_parser
      See Also:
    • init_actions

      protected void init_actions()
      action encapsulation object initializer
      Specified by:
      init_actions in class lr_parser
    • do_action

      public symbol do_action(int act_num, lr_parser parser, Stack stack, int top) throws Exception
      invoke a user supplied parse action
      Specified by:
      do_action in class lr_parser
      Parameters:
      act_num - the internal index of the action to be performed.
      parser - the parser object we are acting for.
      stack - the parse stack of that object.
      top - the index of the top element of the parse stack.
      Throws:
      Exception
    • start_state

      public int start_state()
      start state
      Specified by:
      start_state in class lr_parser
    • start_production

      public int start_production()
      start production
      Specified by:
      start_production in class lr_parser
    • EOF_sym

      public int EOF_sym()
      EOF symbol index
      Specified by:
      EOF_sym in class lr_parser
    • error_sym

      public int error_sym()
      error symbol index
      Specified by:
      error_sym in class lr_parser
    • user_init

      public void user_init() throws Exception
      user initialization
      Overrides:
      user_init in class lr_parser
      Throws:
      Exception
    • scan

      public token scan() throws Exception
      scan to get the next token
      Specified by:
      scan in class lr_parser
      Throws:
      Exception
    • report_fatal_error

      public void report_fatal_error(String message, Object info)
      Description copied from class: lr_parser
      Report a fatal error. This method takes a message string and an additional object (to be used by specializations implemented in subclasses). Here in the base class a very simple implementation is provided which reports the error then throws an exception.
      Overrides:
      report_fatal_error in class lr_parser
      Parameters:
      message - an error message.
      info - an extra object reserved for use by specialized subclasses.
    • report_error

      public void report_error(String message, Object info)
      Description copied from class: lr_parser
      Report a non fatal error (or warning). This method takes a message string and an additional object (to be used by specializations implemented in subclasses). Here in the base class a very simple implementation is provided which simply prints the message to System.err.
      Overrides:
      report_error in class lr_parser
      Parameters:
      message - an error message.
      info - an extra object reserved for use by specialized subclasses.