/**
* Appends an else control structure to the current body and returns $this.
*
* Note: This can only called directly after a call to {@link self::_if() if ()} or {@link self::_elseif() _elseif()}.
*
* The $body parameter can either be an ezcTemplateBodyAstNode element or
* an ezcTemplateAstBuilder object in which case the body is taken from
* the builder.
*
* Usually you will call body() and use the result as the $body parameter,
* this allows you to specify the statements for the body of the else.
* <code>
* $cb->_else( $cb->body()
* ->assign( "a", 5 ) );
* </code>
* This represents the code:
* <code>
* else
* {
* $a = 5;
* }
* </code>
*
* @param mixed $body The body of the 'else' structure.
* @return ezcTemplateAstBuilder
*/
public function _else($body)
{
$if = $this->currentBody->getLastStatement();
if (!$if instanceof ezcTemplateIfAstNode) {
throw new ezcTemplateInternalException("An 'else' control structure can only be appended right after an 'if' or 'elseif', last statement was <" . get_class($if) . ">");
}
$lastCondition = $if->getLastCondition();
if ($lastCondition !== null && $lastCondition->condition === null) {
throw new ezcTemplateInternalException("An 'else' control structure can only be appended right after an 'if' or 'elseif', tried placing it after an 'else' control structure.");
}
if ($body instanceof ezcTemplateAstBuilder) {
$body = $body->getAstNode();
}
$conditionBody = new ezcTemplateConditionBodyAstNode(null, $body);
$if->appendCondition($conditionBody);
return $this;
}
