protected function createHttpLink()
{
$title_char = PEG::subtract($this->lineChar, ']');
$title = PEG::choice(PEG::second(':title=', PEG::join(PEG::many1($title_char))), PEG::second(':title', ''));
$url_char = PEG::subtract($this->lineChar, ']', ':title');
$url = PEG::join(PEG::seq(PEG::choice('http://', 'https://'), PEG::many1($url_char)));
$parser = PEG::seq($url, PEG::optional($title));
return $this->nodeCreater('httplink', $parser, array('href', 'title'));
}
protected function createImageLink()
{
$ext = PEG::choice('.jpg', '.png', '.gif');
$src_char = PEG::pack('[', PEG::seq(PEG::many1(PEG::subtract($this->lineChar, ']', $ext)), $ext), ']');
$src = PEG::join($src_char);
$alt_char = PEG::pack('[', PEG::many1(PEG::subtract($this->lineChar, ']')), ']');
$alt = PEG::join($alt_char);
$parser = PEG::seq($src, PEG::optional($alt));
return $this->nodeCreater(OrgModeSyntax_Node::TYPE_IMAGELINK, $parser, array('src', 'alt'));
}
function __construct(PEG_IParser $lineelt)
{
$cellbody = PEG::many(PEG::subtract($lineelt, '|'));
$this->parser = PEG::many1(PEG::callbackAction(array($this, 'map'), PEG::anything()));
$this->line = PEG::second('|', PEG::many1(PEG::optional('*'), $cellbody, PEG::drop('|')), PEG::eos());
}
<?php
include_once dirname(__FILE__) . '/t/t.php';
$lime = new lime_test();
$optional = PEG::optional(PEG::token('hoge'));
$lime->is($optional->parse(PEG::context('fuga')), false);
$lime->is($optional->parse(PEG::context('hoge')), 'hoge');
