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Symbol Class Reference

List of all members.

Public Methods
	Symbol (int sym_num)
	Symbol (int id, int l, int r)
	Symbol (int id, int l, int r, Object o)
	Symbol (int id, Object o)
String	toString ()
Public Attributes
int	sym
int	parse_state
int	left
int	right
Object	value
Private Methods
	Symbol (int sym_num, int state)
Private Attributes
boolean	used_by_parser = false

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Detailed Description

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

Definition at line 56 of file Symbol.java.

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Member Data Documentation

int Symbol::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. Definition at line 69 of file Symbol.java.

int Symbol::sym

The symbol number of the terminal or non terminal being represented Definition at line 61 of file Symbol.java.

boolean Symbol::used_by_parser = false [private]

This allows us to catch some errors caused by scanners recycling symbols. For the use of the parser only. [CSA, 23-Jul-1999] Definition at line 72 of file Symbol.java.

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The documentation for this class was generated from the following file:

• Symbol.java

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