gi
Class Grammar

java.lang.Object
  gi.Lexicon
      gi.Grammar

Direct Known Subclasses:

LL1_Grammar, LR0_Grammar

public class Grammar

extends Lexicon

This class implements a Grammar.

Version:

1.2

Author:

© 1999-2004 Craig A. Rich <carich@csupomona.edu>

Method Summary

void	interpret(String[] arguments) Interprets by command-line arguments using this Grammar.

Methods inherited from class gi.Lexicon

interpret, interpret, interpret, interpret, interpret, interpret

Methods inherited from class java.lang.Object

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

Method Detail

interpret

public void interpret(String[] arguments)

Interprets by command-line arguments using this Grammar. When interpreting, the parser used will be (in order):

• The parser most recently constructed by preceding command-line arguments.
• The parser originally around this Grammar.
• An LR(1) parser.

The first I/O, lexical, syntax or semantic error that occurs when interpreting is printed to the standard error stream.

Overrides:

interpret in class Lexicon

Parameters:

arguments - the command-line arguments controlling the interpreter.

The following arguments may appear zero or more times, are processed in order, and have the following effects:

-t, --terminals

Print the set of terminals in this Grammar before subsequent syntax analyses.

-l, --lexical

Print terminals in this Grammar grabbed during subsequent syntax analyses.

-f, --firstfollow

Print first and follow sets precomputed during subsequent syntax analyses.

-s, --syntax

Print parsing decisions made during subsequent syntax analyses.

-c, --conflict

Print parsing conflicts encountered during subsequent syntax analyses.

-p, --parsetree, --tree

Print each ParseTree produced by subsequent syntax analyses.

-v, --verbose

Print maximum debugging. Equivalent to -tlfscp.

--ll1

Construct an LL(1) parser around this Grammar.

--lr0

Construct an LR(0) parser around this Grammar.

--slr1

Construct an SLR(1) parser around this Grammar.

--lr1

Construct an LR(1) parser around this Grammar.

-

Interpret the standard input stream using this Grammar.

filename

Interpret source file filename using this Grammar.

If no filename arguments are given, the standard input stream is interpreted.