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smarty_internal_parsetree.php
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smarty_internal_parsetree.php
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<?php
/**
* Smarty Internal Plugin Templateparser Parsetrees
*
* These are classes to build parsetrees in the template parser
*
* @package Smarty
* @subpackage Compiler
* @author Thue Kristensen
* @author Uwe Tews
*/
/**
* @package Smarty
* @subpackage Compiler
* @ignore
*/
abstract class _smarty_parsetree {
/**
* Parser object
* @var object
*/
public $parser;
/**
* Buffer content
* @var mixed
*/
public $data;
/**
* Return buffer
*
* @return string buffer content
*/
abstract public function to_smarty_php();
}
/**
* A complete smarty tag.
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_tag extends _smarty_parsetree {
/**
* Saved block nesting level
* @var int
*/
public $saved_block_nesting;
/**
* Create parse tree buffer for Smarty tag
*
* @param object $parser parser object
* @param string $data content
*/
public function __construct($parser, $data)
{
$this->parser = $parser;
$this->data = $data;
$this->saved_block_nesting = $parser->block_nesting_level;
}
/**
* Return buffer content
*
* @return string content
*/
public function to_smarty_php()
{
return $this->data;
}
/**
* Return complied code that loads the evaluated outout of buffer content into a temporary variable
*
* @return string template code
*/
public function assign_to_var()
{
$var = sprintf('$_tmp%d', ++$this->parser->prefix_number);
$this->parser->compiler->prefix_code[] = sprintf('<?php ob_start();?>%s<?php %s=ob_get_clean();?>', $this->data, $var);
return $var;
}
}
/**
* Code fragment inside a tag.
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_code extends _smarty_parsetree {
/**
* Create parse tree buffer for code fragment
*
* @param object $parser parser object
* @param string $data content
*/
public function __construct($parser, $data)
{
$this->parser = $parser;
$this->data = $data;
}
/**
* Return buffer content in parentheses
*
* @return string content
*/
public function to_smarty_php()
{
return sprintf("(%s)", $this->data);
}
}
/**
* Double quoted string inside a tag.
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_doublequoted extends _smarty_parsetree {
/**
* Create parse tree buffer for double quoted string subtrees
*
* @param object $parser parser object
* @param _smarty_parsetree $subtree parsetree buffer
*/
public function __construct($parser, _smarty_parsetree $subtree)
{
$this->parser = $parser;
$this->subtrees[] = $subtree;
if ($subtree instanceof _smarty_tag) {
$this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);
}
}
/**
* Append buffer to subtree
*
* @param _smarty_parsetree $subtree parsetree buffer
*/
public function append_subtree(_smarty_parsetree $subtree)
{
$last_subtree = count($this->subtrees) - 1;
if ($last_subtree >= 0 && $this->subtrees[$last_subtree] instanceof _smarty_tag && $this->subtrees[$last_subtree]->saved_block_nesting < $this->parser->block_nesting_level) {
if ($subtree instanceof _smarty_code) {
$this->subtrees[$last_subtree]->data .= '<?php echo ' . $subtree->data . ';?>';
} elseif ($subtree instanceof _smarty_dq_content) {
$this->subtrees[$last_subtree]->data .= '<?php echo "' . $subtree->data . '";?>';
} else {
$this->subtrees[$last_subtree]->data .= $subtree->data;
}
} else {
$this->subtrees[] = $subtree;
}
if ($subtree instanceof _smarty_tag) {
$this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);
}
}
/**
* Merge subtree buffer content together
*
* @return string compiled template code
*/
public function to_smarty_php()
{
$code = '';
foreach ($this->subtrees as $subtree) {
if ($code !== "") {
$code .= ".";
}
if ($subtree instanceof _smarty_tag) {
$more_php = $subtree->assign_to_var();
} else {
$more_php = $subtree->to_smarty_php();
}
$code .= $more_php;
if (!$subtree instanceof _smarty_dq_content) {
$this->parser->compiler->has_variable_string = true;
}
}
return $code;
}
}
/**
* Raw chars as part of a double quoted string.
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_dq_content extends _smarty_parsetree {
/**
* Create parse tree buffer with string content
*
* @param object $parser parser object
* @param string $data string section
*/
public function __construct($parser, $data)
{
$this->parser = $parser;
$this->data = $data;
}
/**
* Return content as double quoted string
*
* @return string doubled quoted string
*/
public function to_smarty_php()
{
return '"' . $this->data . '"';
}
}
/**
* Template element
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_template_buffer extends _smarty_parsetree {
/**
* Array of template elements
*
* @var array
*/
public $subtrees = Array();
/**
* Create root of parse tree for template elements
*
* @param object $parser parse object
*/
public function __construct($parser)
{
$this->parser = $parser;
}
/**
* Append buffer to subtree
*
* @param _smarty_parsetree $subtree
*/
public function append_subtree(_smarty_parsetree $subtree)
{
$this->subtrees[] = $subtree;
}
/**
* Sanitize and merge subtree buffers together
*
* @return string template code content
*/
public function to_smarty_php()
{
$code = '';
for ($key = 0, $cnt = count($this->subtrees); $key < $cnt; $key++) {
if ($key + 2 < $cnt) {
if ($this->subtrees[$key] instanceof _smarty_linebreak && $this->subtrees[$key + 1] instanceof _smarty_tag && $this->subtrees[$key + 1]->data == '' && $this->subtrees[$key + 2] instanceof _smarty_linebreak) {
$key = $key + 1;
continue;
}
if (substr($this->subtrees[$key]->data, -1) == '<' && $this->subtrees[$key + 1]->data == '' && substr($this->subtrees[$key + 2]->data, -1) == '?') {
$key = $key + 2;
continue;
}
}
if (substr($code, -1) == '<') {
$subtree = $this->subtrees[$key]->to_smarty_php();
if (substr($subtree, 0, 1) == '?') {
$code = substr($code, 0, strlen($code) - 1) . '<<?php ?>?' . substr($subtree, 1);
} elseif ($this->parser->asp_tags && substr($subtree, 0, 1) == '%') {
$code = substr($code, 0, strlen($code) - 1) . '<<?php ?>%' . substr($subtree, 1);
} else {
$code .= $subtree;
}
continue;
}
if ($this->parser->asp_tags && substr($code, -1) == '%') {
$subtree = $this->subtrees[$key]->to_smarty_php();
if (substr($subtree, 0, 1) == '>') {
$code = substr($code, 0, strlen($code) - 1) . '%<?php ?>>' . substr($subtree, 1);
} else {
$code .= $subtree;
}
continue;
}
if (substr($code, -1) == '?') {
$subtree = $this->subtrees[$key]->to_smarty_php();
if (substr($subtree, 0, 1) == '>') {
$code = substr($code, 0, strlen($code) - 1) . '?<?php ?>>' . substr($subtree, 1);
} else {
$code .= $subtree;
}
continue;
}
$code .= $this->subtrees[$key]->to_smarty_php();
}
return $code;
}
}
/**
* template text
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_text extends _smarty_parsetree {
/**
* Create template text buffer
*
* @param object $parser parser object
* @param string $data text
*/
public function __construct($parser, $data)
{
$this->parser = $parser;
$this->data = $data;
}
/**
* Return buffer content
*
* @return strint text
*/
public function to_smarty_php()
{
return $this->data;
}
}
/**
* template linebreaks
*
* @package Smarty
* @subpackage Compiler
* @ignore
*/
class _smarty_linebreak extends _smarty_parsetree {
/**
* Create buffer with linebreak content
*
* @param object $parser parser object
* @param string $data linebreak string
*/
public function __construct($parser, $data)
{
$this->parser = $parser;
$this->data = $data;
}
/**
* Return linebrak
*
* @return string linebreak
*/
public function to_smarty_php()
{
return $this->data;
}
}
?>

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