Package weka.core.mathematicalexpression

Class Parser

java.lang.Object
java_cup.runtime.lr_parser
weka.core.mathematicalexpression.Parser
public class Parser extends java_cup.runtime.lr_parser
CUP v0.11a beta 20060608 generated parser.
Version:
Sun Jan 11 11:41:39 NZDT 2009

  • Field Summary

    Fields inherited from class java_cup.runtime.lr_parser

    symbolFactory

  • Constructor Summary

    Constructors
    Constructor
    Description
    Parser()
    Default constructor.
    Parser(java_cup.runtime.Scanner s)
    Constructor which sets the default scanner.
    Parser(java_cup.runtime.Scanner s, java_cup.runtime.SymbolFactory sf)
    Constructor which sets the default scanner.

  • Method Summary

    Modifier and Type
    Method
    Description
    short[][]
    action_table()
    Access to parse-action table.
    java_cup.runtime.Symbol
    do_action(int act_num, java_cup.runtime.lr_parser parser, Stack stack, int top)
    Invoke a user supplied parse action.
    int
    EOF_sym()
    EOF Symbol index.
    int
    error_sym()
    error Symbol index.
    Double
    getResult()
    Returns the result of the evaluation.
    HashMap
    getSymbols()
    Returns the current variable - value relation in use.
    static void
    main(String[] args)
    Runs the parser from commandline.
    short[][]
    production_table()
    Access to production table.
    short[][]
    reduce_table()
    Access to reduce_goto table.
    void
    setResult(Double value)
    Sets the result of the evaluation.
    void
    setSymbols(HashMap value)
    Sets the variable - value relation to use.
    int
    start_production()
    Indicates start production.
    int
    start_state()
    Indicates start state.

    Methods inherited from class java_cup.runtime.lr_parser

    debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, done_parsing, dump_stack, expected_token_ids, getScanner, getSymbolContainer, getSymbolFactory, parse, report_error, report_fatal_error, scan, setScanner, symbl_name_from_id, syntax_error, unrecovered_syntax_error, user_init

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Parser

      public Parser()
      Default constructor.

    • Parser

      public Parser(java_cup.runtime.Scanner s)
      Constructor which sets the default scanner.

    • Parser

      public Parser(java_cup.runtime.Scanner s, java_cup.runtime.SymbolFactory sf)
      Constructor which sets the default scanner.

  • Method Details

    • production_table

      public short[][] production_table()
      Access to production table.
      Specified by:
      production_table in class java_cup.runtime.lr_parser

    • action_table

      public short[][] action_table()
      Access to parse-action table.
      Specified by:
      action_table in class java_cup.runtime.lr_parser

    • reduce_table

      public short[][] reduce_table()
      Access to reduce_goto table.
      Specified by:
      reduce_table in class java_cup.runtime.lr_parser

    • do_action

      public java_cup.runtime.Symbol do_action(int act_num, java_cup.runtime.lr_parser parser, Stack stack, int top) throws Exception
      Invoke a user supplied parse action.
      Specified by:
      do_action in class java_cup.runtime.lr_parser
      Throws:
      Exception

    • start_state

      public int start_state()
      Indicates start state.
      Specified by:
      start_state in class java_cup.runtime.lr_parser

    • start_production

      public int start_production()
      Indicates start production.
      Specified by:
      start_production in class java_cup.runtime.lr_parser

    • EOF_sym

      public int EOF_sym()
      EOF Symbol index.
      Specified by:
      EOF_sym in class java_cup.runtime.lr_parser

    • error_sym

      public int error_sym()
      error Symbol index.
      Specified by:
      error_sym in class java_cup.runtime.lr_parser

    • setSymbols

      public void setSymbols(HashMap value)
      Sets the variable - value relation to use.
      Parameters:
      value - the variable-value relation

    • getSymbols

      public HashMap getSymbols()
      Returns the current variable - value relation in use.
      Returns:
      the variable-value relation

    • setResult

      public void setResult(Double value)
      Sets the result of the evaluation.
      Parameters:
      value - the result

    • getResult

      public Double getResult()
      Returns the result of the evaluation.
      Returns:
      the result

    • main

      public static void main(String[] args) throws Exception
      Runs the parser from commandline. Either reads lines from System.in or from a provided file (line by line). With -symbols <semi-colon separated list of variable/value pairs> as first parameter one can provide predefined variable values. E.g.: -symbols "Y=10;X=3" "X+Y"
      Parameters:
      args - the commandline arguments
      Throws:
      Exception - if something goes wrong