NAME
Parse::EBNF::Rule - An EBNF production rule
SYNOPSIS
use Parse::EBNF::Rule;
my $input = "[1] MyRule ::= 'foo' | 'bar'";
# parse a rule
my $rule = Parse::EBNF::Rule->new();
$rule->parse($input);
..OR..
my $rule = Parse::EBNF::Rule->new($input);
# check if parsing succeed
die $rule->error() if $rule->has_error();
# get the root token for this rule
my $token = $rule->base_token();DESCRIPTION
This module parses a single EBNF production into a tree of Parse::EBNF::Token objects.
METHODS
new( [$input] )-
Creates a new rule object, and optionally parses the input.
parse( $input )-
Parses input into a token tree.
has_error()-
Returns 1 if an error occured during the last parse, 0 if not.
error()-
Returns the error string from the last parse failure.
base_token()-
Returns the root Parse::EBNF::Token object for the rule.
AUTHOR
Copyright (C) 2005, Cal Henderson <cal@iamcal.com>