lib/api/smarty/sysplugins/smarty_internal_compile_for.php

   1 <?php
   2 /**
   3  * Smarty Internal Plugin Compile For
   4  * Compiles the {for} {forelse} {/for} tags
   5  *
   6  * @package    Smarty
   7  * @subpackage Compiler
   8  * @author     Uwe Tews
   9  */
  10
  11 /**
  12  * Smarty Internal Plugin Compile For Class
  13  *
  14  * @package    Smarty
  15  * @subpackage Compiler
  16  */
  17 class Smarty_Internal_Compile_For extends Smarty_Internal_CompileBase
  18 {
  19     /**
  20      * Compiles code for the {for} tag
  21      * Smarty 3 does implement two different syntax's:
  22      * - {for $var in $array}
  23      * For looping over arrays or iterators
  24      * - {for $x=0; $x<$y; $x++}
  25      * For general loops
  26      * The parser is generating different sets of attribute by which this compiler can
  27      * determine which syntax is used.
  28      *
  29      * @param  array  $args      array with attributes from parser
  30      * @param  object $compiler  compiler object
  31      * @param  array  $parameter array with compilation parameter
  32      *
  33      * @return string compiled code
  34      */
  35     public function compile($args, $compiler, $parameter)
  36     {
  37         if ($parameter == 0) {
  38             $this->required_attributes = array('start', 'to');
  39             $this->optional_attributes = array('max', 'step');
  40         } else {
  41             $this->required_attributes = array('start', 'ifexp', 'var', 'step');
  42             $this->optional_attributes = array();
  43         }
  44         // check and get attributes
  45         $_attr = $this->getAttributes($compiler, $args);
  46
  47         $output = "<?php ";
  48         if ($parameter == 1) {
  49             foreach ($_attr['start'] as $_statement) {
  50                 $output .= " \$_smarty_tpl->tpl_vars[$_statement[var]] = new Smarty_Variable;";
  51                 $output .= " \$_smarty_tpl->tpl_vars[$_statement[var]]->value = $_statement[value];\n";
  52             }
  53             $output .= "  if ($_attr[ifexp]) { for (\$_foo=true;$_attr[ifexp]; \$_smarty_tpl->tpl_vars[$_attr[var]]->value$_attr[step]) {\n";
  54         } else {
  55             $_statement = $_attr['start'];
  56             $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]] = new Smarty_Variable;";
  57             if (isset($_attr['step'])) {
  58                 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->step = $_attr[step];";
  59             } else {
  60                 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->step = 1;";
  61             }
  62             if (isset($_attr['max'])) {
  63                 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->total = (int) min(ceil((\$_smarty_tpl->tpl_vars[$_statement[var]]->step > 0 ? $_attr[to]+1 - ($_statement[value]) : $_statement[value]-($_attr[to])+1)/abs(\$_smarty_tpl->tpl_vars[$_statement[var]]->step)),$_attr[max]);\n";
  64             } else {
  65                 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->total = (int) ceil((\$_smarty_tpl->tpl_vars[$_statement[var]]->step > 0 ? $_attr[to]+1 - ($_statement[value]) : $_statement[value]-($_attr[to])+1)/abs(\$_smarty_tpl->tpl_vars[$_statement[var]]->step));\n";
  66             }
  67             $output .= "if (\$_smarty_tpl->tpl_vars[$_statement[var]]->total > 0) {\n";
  68             $output .= "for (\$_smarty_tpl->tpl_vars[$_statement[var]]->value = $_statement[value], \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration = 1;\$_smarty_tpl->tpl_vars[$_statement[var]]->iteration <= \$_smarty_tpl->tpl_vars[$_statement[var]]->total;\$_smarty_tpl->tpl_vars[$_statement[var]]->value += \$_smarty_tpl->tpl_vars[$_statement[var]]->step, \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration++) {\n";
  69             $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->first = \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration == 1;";
  70             $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->last = \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration == \$_smarty_tpl->tpl_vars[$_statement[var]]->total;";
  71         }
  72         $output .= "?>";
  73
  74         $this->openTag($compiler, 'for', array('for', $compiler->nocache));
  75         // maybe nocache because of nocache variables
  76         $compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
  77         // return compiled code
  78         return $output;
  79     }
  80 }
  81
  82 /**
  83  * Smarty Internal Plugin Compile Forelse Class
  84  *
  85  * @package    Smarty
  86  * @subpackage Compiler
  87  */
  88 class Smarty_Internal_Compile_Forelse extends Smarty_Internal_CompileBase
  89 {
  90     /**
  91      * Compiles code for the {forelse} tag
  92      *
  93      * @param  array  $args      array with attributes from parser
  94      * @param  object $compiler  compiler object
  95      * @param  array  $parameter array with compilation parameter
  96      *
  97      * @return string compiled code
  98      */
  99     public function compile($args, $compiler, $parameter)
 100     {
 101         // check and get attributes
 102         $_attr = $this->getAttributes($compiler, $args);
 103
 104         list($openTag, $nocache) = $this->closeTag($compiler, array('for'));
 105         $this->openTag($compiler, 'forelse', array('forelse', $nocache));
 106
 107         return "<?php }} else { ?>";
 108     }
 109 }
 110
 111 /**
 112  * Smarty Internal Plugin Compile Forclose Class
 113  *
 114  * @package    Smarty
 115  * @subpackage Compiler
 116  */
 117 class Smarty_Internal_Compile_Forclose extends Smarty_Internal_CompileBase
 118 {
 119     /**
 120      * Compiles code for the {/for} tag
 121      *
 122      * @param  array  $args      array with attributes from parser
 123      * @param  object $compiler  compiler object
 124      * @param  array  $parameter array with compilation parameter
 125      *
 126      * @return string compiled code
 127      */
 128     public function compile($args, $compiler, $parameter)
 129     {
 130         // check and get attributes
 131         $_attr = $this->getAttributes($compiler, $args);
 132         // must endblock be nocache?
 133         if ($compiler->nocache) {
 134             $compiler->tag_nocache = true;
 135         }
 136
 137         list($openTag, $compiler->nocache) = $this->closeTag($compiler, array('for', 'forelse'));
 138
 139         if ($openTag == 'forelse') {
 140             return "<?php }  ?>";
 141         } else {
 142             return "<?php }} ?>";
 143         }
 144     }
 145 }