- optimization {foreach} compiler and processing

change_log.txt

@@ -1,4 +1,7 @@
  ===== 3.1.30-dev ===== (xx.xx.xx)
+ 16.05.2016
+  - optimization {foreach} compiler and processing
+  
  15.05.2016
   - optimization and cleanup of resource code
 

libs/Smarty.class.php

@@ -121,7 +121,7 @@ class Smarty extends Smarty_Internal_TemplateBase
     /**
      * smarty version
      */
-    const SMARTY_VERSION = '3.1.30-dev/69';
+    const SMARTY_VERSION = '3.1.30-dev/70';
 
     /**
      * define variable scopes

libs/sysplugins/smarty_internal_compile_foreach.php

@@ -169,20 +169,28 @@ class Smarty_Internal_Compile_Foreach extends Smarty_Internal_Compile_Private_Fo
             $itemAttr[ 'iteration' ] = true;
             $itemAttr[ 'total' ] = true;
         }
+        if (isset($namedAttr[ 'show' ])) {
+            $namedAttr[ 'total' ] = true;
+        }
+        if (isset($itemAttr[ 'show' ])) {
+            $itemAttr[ 'total' ] = true;
+        }
         $keyTerm = '';
         if (isset($itemAttr[ 'key' ])) {
             $keyTerm = "{$itemVar}->key => ";
+            unset($itemAttr[ 'key' ]);
         } elseif (isset($attributes[ 'key' ])) {
             $keyTerm = "\$_smarty_tpl->tpl_vars['{$key}']->value => ";
         }
         if ($this->isNamed) {
             $foreachVar = "\$_smarty_tpl->tpl_vars['__smarty_foreach_{$attributes['name']}']";
         }
-        $this->openTag($compiler, 'foreach', array('foreach', $compiler->nocache, $local, $itemVar, true));
+        $needTotal = isset($itemAttr[ 'total' ]);
+        // Register tag
+        $this->openTag($compiler, 'foreach',
+                       array('foreach', $compiler->nocache, $local, $itemVar, empty($itemAttr) ? 1 : 2));
         // maybe nocache because of nocache variables
         $compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
-        $needTotal = isset($itemAttr[ 'show' ]) || isset($itemAttr[ 'total' ]) || isset($namedAttr[ 'total' ]) ||
-                     isset($namedAttr[ 'show' ]) || isset($itemAttr[ 'last' ]) || isset($namedAttr[ 'last' ]);
         // generate output code
         $output = "<?php\n";
         $output .= "\$_from = \$_smarty_tpl->smarty->ext->_foreach->init(\$_smarty_tpl, $from, " .
@@ -206,8 +214,8 @@ class Smarty_Internal_Compile_Foreach extends Smarty_Internal_Compile_Private_Fo
         if (isset($itemAttr[ 'index' ])) {
             $output .= "{$itemVar}->index = -1;\n";
         }
+        $output .= "if (\$_from !== null) {\n";
         $output .= "foreach (\$_from as {$keyTerm}{$itemVar}->value) {\n";
-        $output .= "{$itemVar}->_loop = true;\n";
         if (isset($attributes[ 'key' ]) && isset($itemAttr[ 'key' ])) {
             $output .= "\$_smarty_tpl->tpl_vars['{$key}']->value = {$itemVar}->key;\n";
         }
@@ -237,7 +245,9 @@ class Smarty_Internal_Compile_Foreach extends Smarty_Internal_Compile_Private_Fo
                 $output .= "{$foreachVar}->value['last'] = {$foreachVar}->value['iteration'] == {$foreachVar}->value['total'];\n";
             }
         }
-        $output .= "{$local}saved = {$itemVar};\n";
+        if (!empty($itemAttr)) {
+            $output .= "{$local}saved = {$itemVar};\n";
+        }
         $output .= "?>";
 
         return $output;
@@ -266,12 +276,13 @@ class Smarty_Internal_Compile_Foreachelse extends Smarty_Internal_CompileBase
         // check and get attributes
         $_attr = $this->getAttributes($compiler, $args);
 
-        list($openTag, $nocache, $local, $itemVar, $foo) = $this->closeTag($compiler, array('foreach'));
+        list($openTag, $nocache, $local, $itemVar, $restore) = $this->closeTag($compiler, array('foreach'));
-        $this->openTag($compiler, 'foreachelse', array('foreachelse', $nocache, $local, $itemVar, false));
+        $this->openTag($compiler, 'foreachelse', array('foreachelse', $nocache, $local, $itemVar, 0));
         $output = "<?php\n";
-        $output .= "{$itemVar} = {$local}saved;\n";
+        if ($restore == 2) {
-        $output .= "}\n";
+            $output .= "{$itemVar} = {$local}saved;\n";
-        $output .= "if (!{$itemVar}->_loop) {\n?>";
+        }
+        $output .= "}\n} else {\n?>\n";
         return $output;
     }
 }
@@ -305,12 +316,15 @@ class Smarty_Internal_Compile_Foreachclose extends Smarty_Internal_CompileBase
             $this->closeTag($compiler, array('foreach', 'foreachelse'));
         $output = "<?php\n";
 
-        if ($restore) {
+        if ($restore == 2) {
             $output .= "{$itemVar} = {$local}saved;\n";
         }
+        if ($restore > 0) {
+            $output .= "}\n";
+        }
         $output .= "}\n";
         $output .= "\$_smarty_tpl->smarty->ext->_foreach->restore(\$_smarty_tpl);\n";
-        $output .= "?>";
+        $output .= "?>\n";
         return $output;
     }
 }

libs/sysplugins/smarty_internal_runtime_foreach.php

@@ -38,24 +38,35 @@ class Smarty_Internal_Runtime_Foreach
                          $properties = array())
     {
         $saveVars = array();
-        if (isset($tpl->tpl_vars[ $item ])) {
-            $saveVars[ $item ] = $tpl->tpl_vars[ $item ];
-        }
-        if ($key) {
-            if (isset($tpl->tpl_vars[ $key ])) {
-                $saveVars[ $key ] = $tpl->tpl_vars[ $key ];
-            }
-            $tpl->tpl_vars[ $key ] = new Smarty_Variable(null, $tpl->isRenderingCache);
-        }
         if (!is_array($from) && !is_object($from)) {
             settype($from, 'array');
         }
-        $total = $needTotal ? $this->count($from) : 1;
+        $total = ($needTotal || isset($properties[ 'total' ])) ? $this->count($from) : 1;
-        $tpl->tpl_vars[ $item ] = new Smarty_Variable(null, $tpl->isRenderingCache);
+        if (empty($from)) {
-        if ($needTotal) {
+            $from = null;
-            $tpl->tpl_vars[ $item ]->total = $total;
+            $total = 0;
+            if ($needTotal) {
+                if (isset($tpl->tpl_vars[ $item ])) {
+                    $saveVars[ $item ] = $tpl->tpl_vars[ $item ];
+                }
+                $tpl->tpl_vars[ $item ] = new Smarty_Variable(null, $tpl->isRenderingCache);
+                $tpl->tpl_vars[ $item ]->total = 0;
+            }
+        } else {
+            if (isset($tpl->tpl_vars[ $item ])) {
+                $saveVars[ $item ] = $tpl->tpl_vars[ $item ];
+            }
+            if ($key) {
+                if (isset($tpl->tpl_vars[ $key ])) {
+                    $saveVars[ $key ] = $tpl->tpl_vars[ $key ];
+                }
+                $tpl->tpl_vars[ $key ] = new Smarty_Variable(null, $tpl->isRenderingCache);
+            }
+            $tpl->tpl_vars[ $item ] = new Smarty_Variable(null, $tpl->isRenderingCache);
+            if ($needTotal) {
+                $tpl->tpl_vars[ $item ]->total = $total;
+            }
         }
-        $tpl->tpl_vars[ $item ]->_loop = false;
         if ($name) {
             $namedVar = "__smarty_foreach_{$name}";
             if (isset($tpl->tpl_vars[ $namedVar ])) {
@@ -77,7 +88,6 @@ class Smarty_Internal_Runtime_Foreach
             $tpl->tpl_vars[ $namedVar ] = new Smarty_Variable($namedProp);
         }
         $this->stack[] = $saveVars;
-
         return $from;
     }