Package org.acplt.oncrpc.apps.jrpcgen.cup_runtime

Class Symbol

java.lang.Object
org.acplt.oncrpc.apps.jrpcgen.cup_runtime.Symbol
public class Symbol extends Object
Defines the Symbol class, which is used to represent all terminals and nonterminals while parsing. The lexer should pass CUP Symbols and CUP returns a Symbol.
Version:
last updated: 7/3/96
Author:
Frank Flannery

  • Field Details

    • sym

      public int sym
      The symbol number of the terminal or non terminal being represented

    • parse_state

      public int parse_state
      The parse state to be recorded on the parse stack with this symbol. This field is for the convenience of the parser and shouldn't be modified except by the parser.

    • left

      public int left
      The data passed to parser

    • value

      public Object value

  • Constructor Details

    • Symbol

      public Symbol(int id, int l, int r, Object o)
      Parameters:
      id - Id of the symbol type
      l - Left position of the symbol in the original input file
      r - Right position of the symbol in the original input file
      o - Lexical value of the symbol

    • Symbol

      public Symbol(int id, Object o)
      Parameters:
      id - Id of the symbol type
      o - Lexical value of the symbol

    • Symbol

      public Symbol(int id, int l, int r)
      Parameters:
      id - Id of the symbool type
      l - Left position of the symbol in the original input file
      r - Right position of the symbol in the original input file

    • Symbol

      public Symbol(int sym_num)
      Parameters:
      sym_num - Number (aka Id) of the symbol type

  • Method Details

    • toString

      public String toString()
      Overrides:
      toString in class Object
      Returns:
      The string representation of the symbol.