examples.basics.look_ahead Namespace Reference

Variables
string	title
string	abnf_syntax = 'S = &(A !bb) 1*aa B !cc\n'
	api = Api()
	grammar = api.generate(abnf_syntax)
	parser = Parser(grammar)
string	input_string = 'aaabbbccc'
	result = parser.parse(utils.string_to_tuple(input_string))

Variable Documentation

abnf_syntax

string examples.basics.look_ahead.abnf_syntax = 'S = &(A !bb) 1*aa B !cc\n'

Definition at line 32 of file look_ahead.py.

api

examples.basics.look_ahead.api = Api()

Definition at line 40 of file look_ahead.py.

grammar

examples.basics.look_ahead.grammar = api.generate(abnf_syntax)

Definition at line 41 of file look_ahead.py.

input_string

string examples.basics.look_ahead.input_string = 'aaabbbccc'

Definition at line 50 of file look_ahead.py.

parser

examples.basics.look_ahead.parser = Parser(grammar)

Definition at line 49 of file look_ahead.py.

result

examples.basics.look_ahead.result = parser.parse(utils.string_to_tuple(input_string))

Definition at line 51 of file look_ahead.py.

title

string examples.basics.look_ahead.title

Initial value:

=  '''Demonstrate the use of the look ahead operators.
& - the positive look ahead operator
  - succeeds on a specified phrase match
! - the negative look ahead operator
  - fails on a specified phrase match
'''

Definition at line 22 of file look_ahead.py.