3 * Smarty Internal Plugin Templateparser Parsetrees
4 * These are classes to build parsetrees in the template parser
8 * @author Thue Kristensen
14 * @subpackage Compiler
17 abstract class _smarty_parsetree
37 public $subtrees = array();
42 * @return string buffer content
44 abstract public function to_smarty_php();
48 * A complete smarty tag.
51 * @subpackage Compiler
54 class _smarty_tag extends _smarty_parsetree
57 * Saved block nesting level
61 public $saved_block_nesting;
64 * Create parse tree buffer for Smarty tag
66 * @param object $parser parser object
67 * @param string $data content
69 public function __construct($parser, $data)
71 $this->parser = $parser;
73 $this->saved_block_nesting = $parser->block_nesting_level;
77 * Return buffer content
79 * @return string content
81 public function to_smarty_php()
87 * Return complied code that loads the evaluated output of buffer content into a temporary variable
89 * @return string template code
91 public function assign_to_var()
93 $var = sprintf('$_tmp%d', ++Smarty_Internal_Templateparser::$prefix_number);
94 $this->parser->compiler->prefix_code[] = sprintf('<?php ob_start();?>%s<?php %s=ob_get_clean();?>', $this->data, $var);
101 * Code fragment inside a tag.
104 * @subpackage Compiler
107 class _smarty_code extends _smarty_parsetree
110 * Create parse tree buffer for code fragment
112 * @param object $parser parser object
113 * @param string $data content
115 public function __construct($parser, $data)
117 $this->parser = $parser;
122 * Return buffer content in parentheses
124 * @return string content
126 public function to_smarty_php()
128 return sprintf("(%s)", $this->data);
133 * Double quoted string inside a tag.
136 * @subpackage Compiler
139 class _smarty_doublequoted extends _smarty_parsetree
142 * Create parse tree buffer for double quoted string subtrees
144 * @param object $parser parser object
145 * @param _smarty_parsetree $subtree parsetree buffer
147 public function __construct($parser, _smarty_parsetree $subtree)
149 $this->parser = $parser;
150 $this->subtrees[] = $subtree;
151 if ($subtree instanceof _smarty_tag) {
152 $this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);
157 * Append buffer to subtree
159 * @param _smarty_parsetree $subtree parsetree buffer
161 public function append_subtree(_smarty_parsetree $subtree)
163 $last_subtree = count($this->subtrees) - 1;
164 if ($last_subtree >= 0 && $this->subtrees[$last_subtree] instanceof _smarty_tag && $this->subtrees[$last_subtree]->saved_block_nesting < $this->parser->block_nesting_level) {
165 if ($subtree instanceof _smarty_code) {
166 $this->subtrees[$last_subtree]->data .= '<?php echo ' . $subtree->data . ';?>';
167 } elseif ($subtree instanceof _smarty_dq_content) {
168 $this->subtrees[$last_subtree]->data .= '<?php echo "' . $subtree->data . '";?>';
170 $this->subtrees[$last_subtree]->data .= $subtree->data;
173 $this->subtrees[] = $subtree;
175 if ($subtree instanceof _smarty_tag) {
176 $this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);
181 * Merge subtree buffer content together
183 * @return string compiled template code
185 public function to_smarty_php()
188 foreach ($this->subtrees as $subtree) {
192 if ($subtree instanceof _smarty_tag) {
193 $more_php = $subtree->assign_to_var();
195 $more_php = $subtree->to_smarty_php();
200 if (!$subtree instanceof _smarty_dq_content) {
201 $this->parser->compiler->has_variable_string = true;
210 * Raw chars as part of a double quoted string.
213 * @subpackage Compiler
216 class _smarty_dq_content extends _smarty_parsetree
219 * Create parse tree buffer with string content
221 * @param object $parser parser object
222 * @param string $data string section
224 public function __construct($parser, $data)
226 $this->parser = $parser;
231 * Return content as double quoted string
233 * @return string doubled quoted string
235 public function to_smarty_php()
237 return '"' . $this->data . '"';
245 * @subpackage Compiler
248 class _smarty_template_buffer extends _smarty_parsetree
251 * Array of template elements
255 public $subtrees = Array();
258 * Create root of parse tree for template elements
260 * @param object $parser parse object
262 public function __construct($parser)
264 $this->parser = $parser;
268 * Append buffer to subtree
270 * @param _smarty_parsetree $subtree
272 public function append_subtree(_smarty_parsetree $subtree)
274 $this->subtrees[] = $subtree;
278 * Sanitize and merge subtree buffers together
280 * @return string template code content
282 public function to_smarty_php()
285 for ($key = 0, $cnt = count($this->subtrees); $key < $cnt; $key ++) {
286 if ($key + 2 < $cnt) {
287 if ($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) {
291 if (substr($this->subtrees[$key]->data, - 1) == '<' && $this->subtrees[$key + 1]->data == '' && substr($this->subtrees[$key + 2]->data, - 1) == '?') {
296 if (substr($code, - 1) == '<') {
297 $subtree = $this->subtrees[$key]->to_smarty_php();
298 if (substr($subtree, 0, 1) == '?') {
299 $code = substr($code, 0, strlen($code) - 1) . '<<?php ?>?' . substr($subtree, 1);
300 } elseif ($this->parser->asp_tags && substr($subtree, 0, 1) == '%') {
301 $code = substr($code, 0, strlen($code) - 1) . '<<?php ?>%' . substr($subtree, 1);
307 if ($this->parser->asp_tags && substr($code, - 1) == '%') {
308 $subtree = $this->subtrees[$key]->to_smarty_php();
309 if (substr($subtree, 0, 1) == '>') {
310 $code = substr($code, 0, strlen($code) - 1) . '%<?php ?>>' . substr($subtree, 1);
316 if (substr($code, - 1) == '?') {
317 $subtree = $this->subtrees[$key]->to_smarty_php();
318 if (substr($subtree, 0, 1) == '>') {
319 $code = substr($code, 0, strlen($code) - 1) . '?<?php ?>>' . substr($subtree, 1);
325 $code .= $this->subtrees[$key]->to_smarty_php();
336 * @subpackage Compiler
339 class _smarty_text extends _smarty_parsetree
342 * Create template text buffer
344 * @param object $parser parser object
345 * @param string $data text
347 public function __construct($parser, $data)
349 $this->parser = $parser;
354 * Return buffer content
356 * @return strint text
358 public function to_smarty_php()
365 * template linebreaks
368 * @subpackage Compiler
371 class _smarty_linebreak extends _smarty_parsetree
374 * Create buffer with linebreak content
376 * @param object $parser parser object
377 * @param string $data linebreak string
379 public function __construct($parser, $data)
381 $this->parser = $parser;
388 * @return string linebreak
390 public function to_smarty_php()