function it_should_create_a_character_class_from_a_node()
{
$characterClassNode = new CharacterClassNode('a-z');
$characterClassCode = <<<EOS
if (preg_match('/^[a-z]\$/', substr(\$this->string, \$this->position, 1))) {
\$_success = true;
\$this->value = substr(\$this->string, \$this->position, 1);
\$this->position += 1;
} else {
\$_success = false;
}
EOS;
$characterClassNode->accept($this->getWrappedObject());
$this->getResult()->shouldBe($characterClassCode);
}
public function visitCharacterClass(CharacterClassNode $node)
{
$pattern = var_export("/^[{$node->getString()}]\$/", true);
$this->results[] = <<<EOS
if (preg_match({$pattern}, substr(\$this->string, \$this->position, 1))) {
\$_success = true;
\$this->value = substr(\$this->string, \$this->position, 1);
\$this->position += 1;
} else {
\$_success = false;
}
EOS;
}
