get real type for doc values; tests

src/Utils/Business/LuDocParser.php

                         $constraint->setMethod($methodName);
                         $args = [];
                         $argMatches = [];
-                        if (preg_match_all('/ *(-?(?:\d*\.\d+|\d+|true|false|"[^"]*"|\'[^\']*\'))/', $line, $argMatches) !== false) {
+                        if (preg_match_all('/ *(-?(?:\d*\.\d+|\d+|true|false|null|"[^"]*"|\'[^\']*\'))/', $line, $argMatches) !== false) {
                             $args = $argMatches[1];
                             foreach ($args as $key => $arg) {
+                                $argLower = strtolower($arg);
                                 if ($arg[0] == '"' || $arg[0] == "'") {
                                     $args[$key] = substr($arg, 1, count($arg) - 2);
                                 }
+                                else if ($argLower == "true") {
+                                    $args[$key] = true;
+                                }
+                                else if ($argLower == "false") {
+                                    $args[$key] = false;
+                                }
+                                else if ($argLower == "null") {
+                                    $args[$key] = null;
+                                }
+                                else if (strpos($arg, ".") !== false) {
+                                    $args[$key] = floatval($arg);
+                                }
+                                else {
+                                    $args[$key] = intval($arg);
+                                }
                             }
                         }
                         $constraint->setArguments($args);

src/Utils/Dbo/LuStringDbo.php

     {
         return "sample string";
     }
+    
+    protected function getLength($trim)
+    {
+        return strlen($trim ? trim($this->_value) : $this->_value);
+    }
+
+    public function between($min, $max, $trim = true)
+    {
+        $len = self::getLength($trim);
+        if ($len < $min || $len > $max) {
+            throw new LuDboConstraintException("String length must be between ${min} and ${max} inclusive");
+        }
+    }
+
+    public function min($min, $trim = true)
+    {
+        if (self::getLength($trim) < $min) {
+            throw new LuDboConstraintException("String length must be greater or equal to ${min}");
+        }
+    }
+
+    public function max($max, $trim = true)
+    {
+        if (self::getLength($trim) > $max) {
+            throw new LuDboConstraintException("String length must be smaller or equal to ${max}");
+        }
+    }
 }

tests/LuDocParserTest.php

                 "Constraints" => []],
             'myvar2' => ["Name" => 'myvar2', "Type" => "MyType", "Summary" => "some other doc\non another line\nand another\n",
                 "Constraints" => [
-                    ["Method" => "min", "Arguments" => ["42"]],
-                    ["Method" => "max", "Arguments" => ["42"]],
-                    ["Method" => "between", "Arguments" => ["0", "42"]],
-                    ["Method" => "another", "Arguments" => ["1", "2", "42.42", "true", "false", "a string", "string"]]
+                    ["Method" => "min", "Arguments" => [42]],
+                    ["Method" => "max", "Arguments" => [42]],
+                    ["Method" => "between", "Arguments" => [0, 42]],
+                    ["Method" => "another", "Arguments" => [1, 2, 42.42, true, false, "a string", "string"]]
                 ]
             ]
         ];