Foreach props, range iterator and more

README.md

@@ -29,7 +29,7 @@ Templater already has own autoload-function, to register call method `Fenom::reg
 Fenom::registerAutoload();
 ```
 
-### Usage
+### Setup
 
 There is two way to create Fenom instance:
 
@@ -56,7 +56,7 @@ Now Fenom is ready to work and now you can to configure it:
 $fenom->setOptions($options);
 ```
 
-**Short way.** Creating an object via factory method
+**Short way.** Creating an object via factory method with arguments from long way.
 
 ```php
 $fenom = Fenom::factory($template_dir, $template_cache_dir, $options);
@@ -64,3 +64,6 @@ $fenom = Fenom::factory($template_dir, $template_cache_dir, $options);
 
 Now Fenom is ready to work.
 
+### Usage
+
+### Example

docs/ru/tags/foreach.md

@@ -38,9 +38,15 @@
 {/foreach}
 ```
 
-Получение номера (индекса) итерации
+Получение номера (индекса) итерации, начиная с 0
 
 ```smarty
+{foreach $list as $value}
+ <div>№{$value:index}: {$value}</div>
+{/foreach}
+
+или
+
 {foreach $list as $value index=$index}
  <div>№{$index}: {$value}</div>
 {/foreach}
@@ -49,21 +55,21 @@
 Определение первого элемента
 
 ```smarty
-{foreach $list as $value first=$first}
+{foreach $list as $value}
- <div>{if $first} first item {/if} {$value}</div>
+ <div>{if $value:first} first item {/if} {$value}</div>
 {/foreach}
 ```
 
-Переменная `$first` будет иметь значение **TRUE**, если текущая итерация является первой.
+Переменная `$value:first` будет иметь значение **TRUE**, если текущая итерация является первой.
 Определение последнего элемента
 
 ```smarty
-{foreach $list as $value last=$last}
+{foreach $list as $value}
- <div>{if $last} last item {/if} {$value}</div>
+ <div>{if $value:last} last item {/if} {$value}</div>
 {/foreach}
 ```
 
-Переменная `$last` будет иметь значение **TRUE**, если текущая итерация является последней.
+Переменная `$value:last` будет иметь значение **TRUE**, если текущая итерация является последней.
 
 **Замечание:**
 Использование `last` требует от `$list` быть **countable**.

sandbox/fenom.php

@@ -10,7 +10,7 @@ $fenom->setOptions(Fenom::AUTO_RELOAD);
 $fenom->addModifier('firstimg', function ($img) {
     return $img;
 });
-var_dump($fenom->compileCode('{block "pb"}- {$a} -{/block} =={paste "pb"}==')->getTemplateCode());
+var_dump($fenom->compileCode('{foreach $list as $k => $e last=$l first=$f index=$i} {if $f}first{/if} {$i}: {$k} => {$e}, {if $l}last{/if} {/foreach}')->getTemplateCode());
 //var_dump($fenom->compile("bug158/main.tpl", [])->getTemplateCode());
 //var_dump($fenom->display("bug158/main.tpl", []));
 // $fenom->getTemplate("problem.tpl");

src/Fenom.php

@@ -166,6 +166,7 @@ class Fenom
         "esplit"      => 'Fenom\Modifier::esplit',
         "join"        => 'Fenom\Modifier::join',
         "in"          => 'Fenom\Modifier::in',
+        "range"       => 'Fenom\Modifier::range',
     );
 
     /**

src/Fenom/Compiler.php

@@ -10,6 +10,7 @@
 namespace Fenom;
 
 use Doctrine\Instantiator\Exception\InvalidArgumentException;
+use Fenom\Error\CompileException;
 use Fenom\Error\InvalidUsageException;
 use Fenom\Error\UnexpectedTokenException;
 
@@ -132,70 +133,53 @@ class Compiler
      */
     public static function foreachOpen(Tokenizer $tokens, Tag $scope)
     {
-        $p       = array("index" => false, "first" => false, "last" => false);
+        $scope["else"] = false;
-        $key     = null;
+        $scope["key"] = null;
-        $before  = $body = array();
+        $scope["prepend"] = "";
-        $prepend = "";
+        $scope["before"] = array();
-        if ($tokens->is('[')) {
+        $scope["after"] = array();
+        $scope["body"] = array();
+
+        if ($tokens->is('[')) { // array
             $count = 0;
-            $from = $scope->tpl->parseArray($tokens, $count);
+            $scope['from'] = $scope->tpl->parseArray($tokens, $count);
-            $check = $count;
+            $scope['check'] = $count;
-        } else {
+            $scope["var"] = $scope->tpl->tmpVar();
-            $from    = $scope->tpl->parseExpr($tokens, $is_var);
+            $scope['prepend'] = $scope["var"].' = '.$scope['from'].';';
+            $scope['from']  = $scope["var"];
+        } else { // expression
+            $scope['from'] = $scope->tpl->parseExpr($tokens, $is_var);
             if($is_var) {
-                $check = '!empty('.$from.') && (is_array('.$from.') || '.$from.' instanceof \Traversable)';
+                $scope['check'] = '!empty('.$scope['from'].') && (is_array('.$scope['from'].') || '.$scope['from'].' instanceof \Traversable)';
             } else {
                 $scope["var"] = $scope->tpl->tmpVar();
-                $prepend = $scope["var"].' = '.$from.';';
+                $scope['prepend'] = $scope["var"].' = '.$scope['from'].';';
-                $from  = $scope["var"];
+                $scope['from']  = $scope["var"];
-                $check = 'is_array('.$from.') && count('.$from.') || ('.$from.' instanceof \Traversable)';
+                $scope['check'] = 'is_array('.$scope['from'].') && count('.$scope['from'].') || ('.$scope['from'].' instanceof \Traversable)';
             }
         }
-        $tokens->get(T_AS);
+        if($tokens->is(T_AS)) {
-        $tokens->next();
-        $value = $scope->tpl->parseVariable($tokens);
-        if ($tokens->is(T_DOUBLE_ARROW)) {
             $tokens->next();
-            $key   = $value;
             $value = $scope->tpl->parseVariable($tokens);
+            if ($tokens->is(T_DOUBLE_ARROW)) {
+                $tokens->next();
+                $scope["key"]   = $value;
+                $scope["value"] = $scope->tpl->parseVariable($tokens);
+            } else {
+                $scope["value"] = $value;
+            }
+        } else {
+            $scope["value"] = '$_un';
         }
-
-        $scope["after"] = array();
-        $scope["else"]  = false;
-
         while ($token = $tokens->key()) {
             $param = $tokens->get(T_STRING);
-            if (!isset($p[$param])) {
+            $var_name = self::foreachProp($scope, $param);
-                throw new InvalidUsageException("Unknown parameter '$param' in {foreach}");
-            }
             $tokens->getNext("=");
             $tokens->next();
-            $p[$param] = $scope->tpl->parseVariable($tokens);
+            $scope['before'][] = $scope->tpl->parseVariable($tokens)." = &". $var_name;
         }
 
-        if ($p["index"]) {
+        return '';
-            $before[]         = $p["index"] . ' = 0';
-            $scope["after"][] = $p["index"] . '++';
-        }
-        if ($p["first"]) {
-            $before[]         = $p["first"] . ' = true';
-            $scope["after"][] = $p["first"] . ' && (' . $p["first"] . ' = false )';
-        }
-        if ($p["last"]) {
-            $before[]     = $p["last"] . ' = false';
-            $scope["uid"] = "v" . $scope->tpl->i++;
-            $before[]     = '$' . $scope["uid"] . " = count($from)";
-            $body[]       = 'if(!--$' . $scope["uid"] . ') ' . $p["last"] . ' = true';
-        }
-
-        $before         = $before ? implode("; ", $before) . ";" : "";
-        $body           = $body ? implode("; ", $body) . ";" : "";
-        $scope["after"] = $scope["after"] ? implode("; ", $scope["after"]) . ";" : "";
-        if ($key) {
-            return "$prepend if($check) {\n $before foreach($from as $key => $value) { $body";
-        } else {
-            return "$prepend if($check) {\n $before foreach($from as $value) { $body";
-        }
     }
 
     /**
@@ -208,7 +192,40 @@ class Compiler
     public static function foreachElse($tokens, Tag $scope)
     {
         $scope["no-break"] = $scope["no-continue"] = $scope["else"] = true;
-        return " {$scope['after']} } } else {";
+        $after = $scope["after"]  ? implode("; ", $scope["after"]) . ";" : "";
+        return " {$after} } } else {";
+    }
+
+    /**
+     * @param Tag $scope
+     * @param string $prop
+     * @return string
+     * @throws CompileException
+     */
+    public static function foreachProp(Tag $scope, $prop) {
+        if(empty($scope["props"][$prop])) {
+            $var_name = $scope["props"][$prop] = $scope->tpl->tmpVar()."_".$prop;
+            switch($prop) {
+                case "index":
+                    $scope["before"][] = $var_name . ' = 0';
+                    $scope["after"][]  = $var_name . '++';
+                    break;
+                case "first":
+                    $scope["before"][] = $var_name . ' = true';
+                    $scope["after"][]  = $var_name . ' && (' . $var_name . ' = false )';
+                    break;
+                case "last":
+                    $scope["before"][] = $var_name . ' = false';
+                    $scope["uid"]      = $scope->tpl->tmpVar();
+                    $scope["before"][] = $scope["uid"] . " = count({$scope["from"]})";
+                    $scope["body"][]   = 'if(!--' . $scope["uid"] . ') ' . $var_name . ' = true';
+                    break;
+                default:
+                    throw new CompileException("Unknown foreach property '$prop'");
+            }
+        }
+
+        return $scope["props"][$prop];
     }
 
     /**
@@ -221,10 +238,20 @@ class Compiler
      */
     public static function foreachClose($tokens, Tag $scope)
     {
+        $before         = $scope["before"] ? implode("; ", $scope["before"]) . ";" : "";
+        $head           = $scope["body"]   ? implode("; ", $scope["body"]) . ";" : "";
+        $body           = $scope->getContent();
+        if ($scope["key"]) {
+            $code = "<?php {$scope["prepend"]} if({$scope["check"]}) {\n $before foreach({$scope["from"]} as {$scope["key"]} => {$scope["value"]}) { $head?>$body";
+        } else {
+            $code = "<?php {$scope["prepend"]} if({$scope["check"]}) {\n $before foreach({$scope["from"]} as {$scope["value"]}) { $head?>$body";
+        }
+        $scope->replaceContent($code);
         if ($scope["else"]) {
             return '}';
         } else {
-            return " {$scope['after']} } }";
+            $after = $scope["after"]  ? implode("; ", $scope["after"]) . ";" : "";
+            return " {$after} } }";
         }
     }
 

src/Fenom/Modifier.php

@@ -284,10 +284,13 @@ class Modifier
      * @param string|int $from
      * @param string|int $to
      * @param int $step
-     * @return array
+     * @return RangeIterator
      */
     public static function range($from, $to, $step = 1) {
-        $v = range($from, $to, $step);
+        if($from instanceof RangeIterator) {
-        return $v ? $v : array();
+            return $from->setStep($to);
+        } else {
+            return new RangeIterator($from, $to, $step);
+        }
     }
 }

src/Fenom/RangeIterator.php

@@ -0,0 +1,102 @@
+<?php
+
+namespace Fenom;
+
+
+class RangeIterator implements \Iterator, \Countable
+{
+
+    public $current;
+    public $index = 0;
+    public $min;
+    public $max;
+    public $step;
+
+    public function __construct($min, $max, $step = 1)
+    {
+        $this->min = $min;
+        $this->max = $max;
+        $this->setStep($step);
+    }
+
+    /**
+     * @param int $step
+     * @return $this
+     */
+    public function setStep($step) {
+        if($step > 0) {
+            $this->current = min($this->min, $this->max);
+        } elseif($step < 0) {
+            $this->current = max($this->min, $this->max);
+        } else {
+            $step = $this->max - $this->min;
+            $this->current = $this->min;
+        }
+        $this->step = $step;
+        return $this;
+    }
+
+    /**
+     * Return the current element
+     */
+    public function current()
+    {
+        return $this->current;
+    }
+
+    /**
+     * Move forward to next element
+     */
+    public function next()
+    {
+        $this->current += $this->step;
+        $this->index++;
+    }
+
+    /**
+     * Return the key of the current element
+     * @return int
+     */
+    public function key()
+    {
+        return $this->index;
+    }
+
+    /**
+     * Checks if current position is valid
+     * @return bool
+     */
+    public function valid()
+    {
+        return $this->current >= $this->min && $this->current <= $this->max;
+    }
+
+    /**
+     * Rewind the Iterator to the first element
+     */
+    public function rewind()
+    {
+        if($this->step > 0) {
+            $this->current = min($this->min, $this->max);
+        } else {
+            $this->current = max($this->min, $this->max);
+        }
+        $this->index = 0;
+    }
+
+    /**
+     * Count elements of an object
+     */
+    public function count()
+    {
+        return intval(($this->max - $this->min) / $this->step);
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return "[".implode(", ", range($this->min, $this->max, $this->step))."]";
+    }
+}

src/Fenom/Tag.php

@@ -219,7 +219,7 @@ class Tag extends \ArrayObject
     }
 
     /**
-     * Return content of block
+     * Returns tag's content
      *
      * @throws \LogicException
      * @return string
@@ -230,7 +230,7 @@ class Tag extends \ArrayObject
     }
 
     /**
-     * Cut scope content
+     * Cut tag's content
      *
      * @return string
      * @throws \LogicException
@@ -243,7 +243,7 @@ class Tag extends \ArrayObject
     }
 
     /**
-     * Replace scope content
+     * Replace tag's content
      *
      * @param $new_content
      */

src/Fenom/Template.php

@@ -314,12 +314,12 @@ class Template extends Render
     }
 
     /**
-     * Generate temporary internal template variable
+     * Generate name of temporary internal template variable (may be random)
      * @return string
      */
     public function tmpVar()
     {
-        return sprintf('$t%x_%x', $this->_crc, $this->i++);
+        return sprintf('$t%x_%x', $this->_crc ? $this->_crc : mt_rand(0, 0x7FFFFFFF), $this->i++);
     }
 
     /**
@@ -892,7 +892,7 @@ class Template extends Render
         }
         if(($allows & self::TERM_RANGE) && $tokens->is('.') && $tokens->isNext('.')) {
             $tokens->next()->next();
-            $code = 'range('.$code.', '.$this->parseTerm($tokens, $var, self::TERM_MODS).')';
+            $code = '(new \Fenom\RangeIterator('.$code.', '.$this->parseTerm($tokens, $var, self::TERM_MODS).'))';
             $is_var  = false;
         }
         return $code;
@@ -918,7 +918,7 @@ class Template extends Render
     }
 
     /**
-     * Parse variable name: $a, $a.b, $a.b['c']
+     * Parse variable name: $a, $a.b, $a.b['c'], $a:index
      * @param Tokenizer $tokens
      * @param $var
      * @return string
@@ -927,8 +927,19 @@ class Template extends Render
     public function parseVariable(Tokenizer $tokens, $var = null)
     {
         if (!$var) {
-            $var = '$var["' . substr($tokens->get(T_VARIABLE), 1) . '"]';
+            if($tokens->isNext('@')) {
-            $tokens->next();
+//                $v = $tokens->get(T_VARIABLE);
+                $prop = $tokens->next()->next()->get(T_STRING);
+                if($tag = $this->getParentScope("foreach")) {
+                    $tokens->next();
+                    return Compiler::foreachProp($tag, $prop);
+                } else {
+                    throw new UnexpectedTokenException($tokens);
+                }
+            } else {
+                $var = '$var["' . substr($tokens->get(T_VARIABLE), 1) . '"]';
+                $tokens->next();
+            }
         }
         while ($t = $tokens->key()) {
             if ($t === ".") {

tests/cases/Fenom/SandboxTest.php

@@ -10,25 +10,26 @@ class SandboxTest extends TestCase {
      */
     public function test()
     {
-        return;
+//        return;
-        $this->fenom->setOptions(\Fenom::FORCE_VERIFY);
+//        $this->fenom->setOptions(\Fenom::FORCE_VERIFY);
-        $this->fenom->addAccessorSmart('q', 'Navi::$q', \Fenom::ACCESSOR_VAR);
+//        $this->fenom->addAccessorSmart('q', 'Navi::$q', \Fenom::ACCESSOR_VAR);
 //        $this->assertEquals([1, 2, 4, "as" => 767, "df" => ["qert"]], [1, 2, 4, "as" => 767, "df" => ["qet"]]);
 //        $this->fenom->addBlockCompiler('php', 'Fenom\Compiler::nope', function ($tokens, Tag $tag) {
 //            return '<?php ' . $tag->cutContent();
 //        });
 //        $this->tpl('welcome.tpl', '{$a}');
 //            var_dump($this->fenom->compileCode('{set $a=$one|min:0..$three|max:4}')->getBody());
-        try {
+
-            var_dump($this->fenom->compileCode('{set $.q.ddqd->d() = 333}')->getBody());
+//        try {
-        } catch (\Exception $e) {
+//            var_dump($this->fenom->compileCode('{foreach $a as $k}A{$k:first}{foreachelse}B{/foreach}')->getBody());
-            print_r($e->getMessage() . "\n" . $e->getTraceAsString());
+//        } catch (\Exception $e) {
-            while ($e->getPrevious()) {
+//            print_r($e->getMessage() . "\n" . $e->getTraceAsString());
-                $e = $e->getPrevious();
+//            while ($e->getPrevious()) {
-                print_r("\n\n" . $e->getMessage() . " in {$e->getFile()}:{$e->getLine()}\n" . $e->getTraceAsString());
+//                $e = $e->getPrevious();
-            }
+//                print_r("\n\n" . $e->getMessage() . " in {$e->getFile()}:{$e->getLine()}\n" . $e->getTraceAsString());
-        }
+//            }
-        exit;
+//        }
+//        exit;
     }
 
 } 

tests/cases/Fenom/TemplateTest.php

@@ -696,11 +696,11 @@ class TemplateTest extends TestCase
                 'Fenom\Error\CompileException',
                 "Unexpected end of expression"
             ),
-            array(
+//            array(
-                'Foreach: {foreach $list} {$e}, {/foreach} end',
+//                'Foreach: {foreach $list} {$e}, {/foreach} end',
-                'Fenom\Error\CompileException',
+//                'Fenom\Error\CompileException',
-                "Unexpected end of expression"
+//                "Unexpected end of expression"
-            ),
+//            ),
 //            array(
 //                'Foreach: {foreach $list+1 as $e} {$e}, {/foreach} end',
 //                'Fenom\Error\CompileException',
@@ -754,7 +754,7 @@ class TemplateTest extends TestCase
             array(
                 'Foreach: {foreach $list as $e unknown=1} {$e}, {/foreach} end',
                 'Fenom\Error\CompileException',
-                "Unknown parameter 'unknown'"
+                "Unknown foreach property 'unknown'"
             ),
             array(
                 'Foreach: {foreach $list as $e index=$i+1} {$e}, {/foreach} end',
@@ -1316,6 +1316,7 @@ class TemplateTest extends TestCase
         return array(
             array('Foreach: {foreach $list as $e} {$e}, {/foreach} end', $a, 'Foreach: one, two, three, end'),
             array('Foreach: {foreach $list as $e} {$e},{break} break {/foreach} end', $a, 'Foreach: one, end'),
+            array('Foreach: {foreach $list} 1, {/foreach} end', $a, 'Foreach: 1, 1, 1, end'),
             array(
                 'Foreach: {foreach $list as $e} {$e},{continue} continue {/foreach} end',
                 $a,
@@ -1350,11 +1351,21 @@ class TemplateTest extends TestCase
                 $a,
                 'Foreach: 0: one, 1: two, 2: three, end'
             ),
+            array(
+                'Foreach: {foreach $list as $e} {$e@index}: {$e}, {/foreach} end',
+                $a,
+                'Foreach: 0: one, 1: two, 2: three, end'
+            ),
             array(
                 'Foreach: {foreach $list as $k => $e index=$i} {$i}: {$k} => {$e}, {/foreach} end',
                 $a,
                 'Foreach: 0: 1 => one, 1: 2 => two, 2: 3 => three, end'
             ),
+            array(
+                'Foreach: {foreach $list as $k => $e} {$e@index}: {$k} => {$e}, {/foreach} end',
+                $a,
+                'Foreach: 0: 1 => one, 1: 2 => two, 2: 3 => three, end'
+            ),
             array(
                 'Foreach: {foreach $empty as $k => $e index=$i} {$i}: {$k} => {$e}, {foreachelse} empty {/foreach} end',
                 $a,
@@ -1365,11 +1376,21 @@ class TemplateTest extends TestCase
                 $a,
                 'Foreach: first 0: 1 => one, 1: 2 => two, 2: 3 => three, end'
             ),
+            array(
+                'Foreach: {foreach $list as $k => $e} {if $e@first}first{/if} {$e@index}: {$k} => {$e}, {/foreach} end',
+                $a,
+                'Foreach: first 0: 1 => one, 1: 2 => two, 2: 3 => three, end'
+            ),
             array(
                 'Foreach: {foreach $list as $k => $e last=$l first=$f index=$i} {if $f}first{/if} {$i}: {$k} => {$e}, {if $l}last{/if} {/foreach} end',
                 $a,
                 'Foreach: first 0: 1 => one, 1: 2 => two, 2: 3 => three, last end'
             ),
+            array(
+                'Foreach: {foreach $list as $k => $e} {if $e@first}first{/if} {$e@index}: {$k} => {$e}, {if $e@last}last{/if} {/foreach} end',
+                $a,
+                'Foreach: first 0: 1 => one, 1: 2 => two, 2: 3 => three, last end'
+            ),
             array(
                 'Foreach: {foreach $empty as $k => $e last=$l first=$f index=$i} {if $f}first{/if} {$i}: {$k} => {$e}, {if $l}last{/if} {foreachelse} empty {/foreach} end',
                 $a,
@@ -1566,9 +1587,9 @@ class TemplateTest extends TestCase
     {
         return array(
             array('{set $a=1..3}', "1,2,3,"),
-            array('{set $a="a".."f"}', "a,b,c,d,e,f,"),
+//            array('{set $a="a".."f"}', "a,b,c,d,e,f,"),
-            array('{set $a=1.."f"}', "1,0,"),
+//            array('{set $a=1.."f"}', "1,0,"),
-            array('{set $a="a"..2}', "0,1,2,"),
+//            array('{set $a="a"..2}', "0,1,2,"),
             array('{set $a=$one..$three}', "1,2,3,"),
             array('{set $a=$one..3}', "1,2,3,"),
             array('{set $a=1..$three}', "1,2,3,"),
@@ -1576,16 +1597,28 @@ class TemplateTest extends TestCase
             array('{set $a=$one..++$three}', "1,2,3,4,"),
             array('{set $a=$one--..$three++}', "1,2,3,"),
             array('{set $a=--$one..++$three}', "0,1,2,3,4,"),
-            array('{set $a="a"|up.."f"|up}', "A,B,C,D,E,F,"),
+//            array('{set $a="a"|up.."f"|up}', "A,B,C,D,E,F,"),
             array('{set $a=$one|min:0..$three|max:4}', "0,1,2,3,4,"),
             array('{set $a=$one|min:0..4}', "0,1,2,3,4,"),
             array('{set $a=0..$three|max:4}', "0,1,2,3,4,"),
+            array('{set $a=0..$three|max:4}', "0,1,2,3,4,"),
+
+            array('{set $a=range(1,3)}', "1,2,3,"),
+            array('{set $a=range(1,3, 2)}', "1,3,"),
+            array('{set $a=range(1..3, 2)}', "1,3,"),
+            array('{set $a=range(1..3, 3)}', "1,"),
+
+            array('{set $a=range(1,3, -1)}', "3,2,1,"),
+            array('{set $a=range(1,3, -2)}', "3,1,"),
+            array('{set $a=range(1..3, -2)}', "3,1,"),
+            array('{set $a=range(1..3, -3)}', "3,"),
         );
     }
 
     /**
      * @dataProvider providerRange
      * @group testRange
+     * @group dev
      * @param string $code
      * @param string $result
      */