/home/smartonegroup/www/veroserv/vendor/smarty/smarty/src/Runtime/InheritanceRuntime.php
<?php
namespace Smarty\Runtime;
use Smarty\Template;
use Smarty\Template\Source;
use Smarty\Exception;
/**
* Inheritance Runtime Methods processBlock, endChild, init
*
* @author Uwe Tews
**/
class InheritanceRuntime {
/**
* State machine
* - 0 idle next extends will create a new inheritance tree
* - 1 processing child template
* - 2 wait for next inheritance template
* - 3 assume parent template, if child will loaded goto state 1
* a call to a sub template resets the state to 0
*
* @var int
*/
private $state = 0;
/**
* Array of root child {block} objects
*
* @var \Smarty\Runtime\Block[]
*/
private $childRoot = [];
/**
* inheritance template nesting level
*
* @var int
*/
private $inheritanceLevel = 0;
/**
* inheritance template index
*
* @var int
*/
private $tplIndex = -1;
/**
* Array of template source objects
*
* @var Source[]
*/
private $sources = [];
/**
* Stack of source objects while executing block code
*
* @var Source[]
*/
private $sourceStack = [];
/**
* Initialize inheritance
*
* @param \Smarty\Template $tpl template object of caller
* @param bool $initChild if true init for child template
* @param array $blockNames outer level block name
*/
public function init(Template $tpl, $initChild, $blockNames = []) {
// if called while executing parent template it must be a sub-template with new inheritance root
if ($initChild && $this->state === 3 && (strpos($tpl->template_resource, 'extendsall') === false)) {
$tpl->setInheritance(clone $tpl->getSmarty()->getRuntime('Inheritance'));
$tpl->getInheritance()->init($tpl, $initChild, $blockNames);
return;
}
++$this->tplIndex;
$this->sources[$this->tplIndex] = $tpl->getSource();
// start of child sub template(s)
if ($initChild) {
$this->state = 1;
if (!$this->inheritanceLevel) {
//grab any output of child templates
ob_start();
}
++$this->inheritanceLevel;
}
// if state was waiting for parent change state to parent
if ($this->state === 2) {
$this->state = 3;
}
}
/**
* End of child template(s)
* - if outer level is reached flush output buffer and switch to wait for parent template state
*
* @param \Smarty\Template $tpl
* @param null|string $template optional name of inheritance parent template
*
* @throws \Exception
* @throws \Smarty\Exception
*/
public function endChild(Template $tpl, $template = null, ?string $currentDir = null) {
--$this->inheritanceLevel;
if (!$this->inheritanceLevel) {
ob_end_clean();
$this->state = 2;
}
if (isset($template)) {
$tpl->renderSubTemplate(
$template,
$tpl->cache_id,
$tpl->compile_id,
$tpl->caching ? \Smarty\Template::CACHING_NOCACHE_CODE : 0,
$tpl->cache_lifetime,
[],
null,
$currentDir
);
}
}
/**
* \Smarty\Runtime\Block constructor.
* - if outer level {block} of child template ($state === 1) save it as child root block
* - otherwise process inheritance and render
*
* @param \Smarty\Template $tpl
* @param $className
* @param string $name
* @param int|null $tplIndex index of outer level {block} if nested
*
* @throws \Smarty\Exception
*/
public function instanceBlock(Template $tpl, $className, $name, $tplIndex = null) {
$block = new $className($name, isset($tplIndex) ? $tplIndex : $this->tplIndex);
if (isset($this->childRoot[$name])) {
$block->child = $this->childRoot[$name];
}
if ($this->state === 1) {
$this->childRoot[$name] = $block;
return;
}
// make sure we got child block of child template of current block
while ($block->child && $block->child->child && $block->tplIndex <= $block->child->tplIndex) {
$block->child = $block->child->child;
}
$this->processBlock($tpl, $block);
}
/**
* Goto child block or render this
*
* @param Template $tpl
* @param \Smarty\Runtime\Block $block
* @param \Smarty\Runtime\Block|null $parent
*
* @throws Exception
*/
private function processBlock(
Template $tpl,
\Smarty\Runtime\Block $block,
?\Smarty\Runtime\Block $parent = null
) {
if ($block->hide && !isset($block->child)) {
return;
}
if (isset($block->child) && $block->child->hide && !isset($block->child->child)) {
$block->child = null;
}
$block->parent = $parent;
if ($block->append && !$block->prepend && isset($parent)) {
$this->callParent($tpl, $block, '\'{block append}\'');
}
if ($block->callsChild || !isset($block->child) || ($block->child->hide && !isset($block->child->child))) {
$this->callBlock($block, $tpl);
} else {
$this->processBlock($tpl, $block->child, $block);
}
if ($block->prepend && isset($parent)) {
$this->callParent($tpl, $block, '{block prepend}');
if ($block->append) {
if ($block->callsChild || !isset($block->child)
|| ($block->child->hide && !isset($block->child->child))
) {
$this->callBlock($block, $tpl);
} else {
$this->processBlock($tpl, $block->child, $block);
}
}
}
$block->parent = null;
}
/**
* Render child on \$smarty.block.child
*
* @param Template $tpl
* @param \Smarty\Runtime\Block $block
*
* @return null|string block content
* @throws Exception
*/
public function callChild(Template $tpl, \Smarty\Runtime\Block $block) {
if (isset($block->child)) {
$this->processBlock($tpl, $block->child, $block);
}
}
/**
* Render parent block on \$smarty.block.parent or {block append/prepend}
*
* @param Template $tpl
* @param \Smarty\Runtime\Block $block
* @param string $tag
*
* @return null|string block content
* @throws Exception
*/
public function callParent(Template $tpl, \Smarty\Runtime\Block $block) {
if (isset($block->parent)) {
$this->callBlock($block->parent, $tpl);
} else {
throw new Exception("inheritance: illegal '{\$smarty.block.parent}' used in child template '" .
"{$tpl->getInheritance()->sources[$block->tplIndex]->getResourceName()}' block '{$block->name}'");
}
}
/**
* render block
*
* @param \Smarty\Runtime\Block $block
* @param Template $tpl
*/
public function callBlock(\Smarty\Runtime\Block $block, Template $tpl) {
$this->sourceStack[] = $tpl->getSource();
$tpl->setSource($this->sources[$block->tplIndex]);
$block->callBlock($tpl);
$tpl->setSource(array_pop($this->sourceStack));
}
}