COLOGNE

What Cologne is:

Cologne is a LR(0) parser created in Python.

How to use cologne:

1. import Cologne.

import Cologne

2. create a parser.

parser = Cologne.parser

3. create your terminals.

# Terminals.
NUMBER = parser.add_terminal(Cologne.Terminal("NUMBER"))
PLUS = parser.add_terminal(Cologne.Terminal("PLUS"))
MINUS = parser.add_terminal(Cologne.Terminal("MINUS"))
TIMES = parser.add_terminal(Cologne.Terminal("TIMES"))
DIVIDE = parser.add_terminal(Cologne.Terminal("DIVIDE"))

4. create your non terminals.

expr = parser.add_non_terminal(Cologne.NonTerminal("expr"))

5. create your productions.

parser.add_productions(
	Cologne.Production( expr, (expr, PLUS, expr) ),
	Cologne.Production( expr, (expr, MINUS, expr) ),
	Cologne.Production( expr, (expr, TIMES, expr) ),
	Cologne.Production( expr, (expr, DIVIDE, expr) ),
	Cologne.Production( expr, (NUMBER, ) )
)

6. Generate the closures and the parse table.

parser.generate_closures()
parse_table = Cologne.ParseTable(parser)