Context.php ➔ phptal_unravel_closure() - Code Metrics - Inspection of "Merge pull request #54 from Slamdunk/patch-1" - phptal/PHPTAL - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b0df54...0c9057 )

by Ben

created 2016-08-02 18:40 UTC

Context.php ➔ phptal_unravel_closure() A

↳ Parent: Project

Complexity

Conditions	3
Paths	2

Size

Total Lines	7
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	3
eloc	4
nc	2
nop	1
dl	0
loc	7
rs	9.4285
c	2
b	0
f	0

<?php
/**
 * PHPTAL templating engine
 *
 * PHP Version 5
 *
 * @category HTML
 * @package  PHPTAL
 * @author   Laurent Bedubourg <[email protected]>
 * @author   Kornel Lesiński <[email protected]>
 * @license  http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
 * @version  SVN: $Id$
 * @link     http://phptal.org/
 */

/**
 * This class handles template execution context.
 * Holds template variables and carries state/scope across macro executions.
 *
 */
class PHPTAL_Context
namespace YourVendor;

class YourClass { }
{
    public $repeat;
    public $_xmlDeclaration;
    public $_docType;
    private $_nothrow;
    private $_slots = array();
    private $_slotsStack = array();
    private $_parentContext = null;
    private $_globalContext = null;
    private $_echoDeclarations = false;

    public function __construct()
    {
        $this->repeat = new stdClass();
    }

    public function __clone()
    {
        $this->repeat = clone $this->repeat;
    }

    /**
     * will switch to this context when popContext() is called
     *
     * @return void
     */
    public function setParent(PHPTAL_Context $parent)
    {
        $this->_parentContext = $parent;
    }

    /**
     * set stdClass object which has property of every global variable
     * It can use __isset() and __get() [none of them or both]
     *
     * @return void
     */
    public function setGlobal(stdClass $globalContext)
    {
        $this->_globalContext = $globalContext;
    }

    /**
     * save current execution context
     *
     * @return Context (new)
     */
    public function pushContext()
    {
        $res = clone $this;
        $res->setParent($this);
        return $res;
    }

    /**
     * get previously saved execution context
     *
     * @return Context (old)
     */
    public function popContext()
    {
        return $this->_parentContext;
    }

    /**
     * @param bool $tf true if DOCTYPE and XML declaration should be echoed immediately, false if buffered
     */
    public function echoDeclarations($tf)
    {
        $this->_echoDeclarations = $tf;
    }

    /**
     * Set output document type if not already set.
     *
     * This method ensure PHPTAL uses the first DOCTYPE encountered (main
     * template or any macro template source containing a DOCTYPE.
     *
     * @param bool $called_from_macro will do nothing if _echoDeclarations is also set
     *
     * @return void
     */
    public function setDocType($doctype,$called_from_macro)

    {
        // FIXME: this is temporary workaround for problem of DOCTYPE disappearing in cloned PHPTAL object (because clone keeps _parentContext)
        if (!$this->_docType) {
            $this->_docType = $doctype;
        }

        if ($this->_parentContext) {
            $this->_parentContext->setDocType($doctype, $called_from_macro);
        } else if ($this->_echoDeclarations) {
            if (!$called_from_macro) {
                echo $doctype;
            } else {
                throw new PHPTAL_ConfigurationException("Executed macro in file with DOCTYPE when using echoExecute(). This is not supported yet. Remove DOCTYPE or use PHPTAL->execute().");
            }
        }
        else if (!$this->_docType) {
            $this->_docType = $doctype;
        }
    }

    /**
     * Set output document xml declaration.
     *
     * This method ensure PHPTAL uses the first xml declaration encountered
     * (main template or any macro template source containing an xml
     * declaration)
     *
     * @param bool $called_from_macro will do nothing if _echoDeclarations is also set
     *
     * @return void
     */
    public function setXmlDeclaration($xmldec, $called_from_macro)

    {
        // FIXME
        if (!$this->_xmlDeclaration) {
            $this->_xmlDeclaration = $xmldec;
        }

        if ($this->_parentContext) {
            $this->_parentContext->setXmlDeclaration($xmldec, $called_from_macro);
        } else if ($this->_echoDeclarations) {
            if (!$called_from_macro) {
                echo $xmldec."\n";
            } else {
                throw new PHPTAL_ConfigurationException("Executed macro in file with XML declaration when using echoExecute(). This is not supported yet. Remove XML declaration or use PHPTAL->execute().");
            }
        } else if (!$this->_xmlDeclaration) {
            $this->_xmlDeclaration = $xmldec;
        }
    }

    /**
     * Activate or deactivate exception throwing during unknown path
     * resolution.
     *
     * @return void
     */
    public function noThrow($bool)
    {
        $this->_nothrow = $bool;
    }

    /**
     * Returns true if specified slot is filled.
     *
     * @return bool
     */
    public function hasSlot($key)
    {
        return isset($this->_slots[$key]) || ($this->_parentContext && $this->_parentContext->hasSlot($key));
    }

    /**
     * Returns the content of specified filled slot.
     *
     * Use echoSlot() whenever you just want to output the slot
     *
     * @return string
     */
    public function getSlot($key)
    {
        if (isset($this->_slots[$key])) {
            if (is_string($this->_slots[$key])) {
                return $this->_slots[$key];
            }
            ob_start();
            call_user_func($this->_slots[$key][0], $this->_slots[$key][1], $this->_slots[$key][2]);
            return ob_get_clean();
        } else if ($this->_parentContext) {
            return $this->_parentContext->getSlot($key);
        }
    }

    /**
     * Immediately echoes content of specified filled slot.
     *
     * Equivalent of echo $this->getSlot();
     *
     * @return string
     */
    public function echoSlot($key)
    {
        if (isset($this->_slots[$key])) {
            if (is_string($this->_slots[$key])) {
                echo $this->_slots[$key];
            } else {
                call_user_func($this->_slots[$key][0], $this->_slots[$key][1], $this->_slots[$key][2]);
            }
        } else if ($this->_parentContext) {
            return $this->_parentContext->echoSlot($key);
        }
    }

    /**
     * Fill a macro slot.
     *
     * @return void
     */
    public function fillSlot($key, $content)
    {
        $this->_slots[$key] = $content;
        if ($this->_parentContext) {
            // Works around bug with tal:define popping context after fillslot
            $this->_parentContext->_slots[$key] = $content;
        }
    }

    public function fillSlotCallback($key, $callback, $_thistpl, $tpl)
    {
        assert('is_callable($callback)');
        $this->_slots[$key] = array($callback, $_thistpl, $tpl);
        if ($this->_parentContext) {
            // Works around bug with tal:define popping context after fillslot
            $this->_parentContext->_slots[$key] = array($callback, $_thistpl, $tpl);
        }
    }

    /**
     * Push current filled slots on stack.
     *
     * @return void
     */
    public function pushSlots()
    {
        $this->_slotsStack[] =  $this->_slots;
        $this->_slots = array();
    }

    /**
     * Restore filled slots stack.
     *
     * @return void
     */
    public function popSlots()
    {
        $this->_slots = array_pop($this->_slotsStack);
    }

    /**
     * Context setter.
     *
     * @return void
     */
    public function __set($varname, $value)
    {
        if (preg_match('/^_|\s/', $varname)) {
            throw new PHPTAL_InvalidVariableNameException('Template variable error \''.$varname.'\' must not begin with underscore or contain spaces');
        }
        $this->$varname = $value;
    }

    /**
     * @return bool
     */
    public function __isset($varname)
    {
        // it doesn't need to check isset($this->$varname), because PHP does that _before_ calling __isset()
        return isset($this->_globalContext->$varname) || defined($varname);
    }

    /**
     * Context getter.
     * If variable doesn't exist, it will throw an exception, unless noThrow(true) has been called
     *
     * @return mixed
     */
    public function __get($varname)
    {
        // PHP checks public properties first, there's no need to support them here

        // must use isset() to allow custom global contexts with __isset()/__get()
        if (isset($this->_globalContext->$varname)) {
            return $this->_globalContext->$varname;
        }

        if (defined($varname)) {
            return constant($varname);
        }

        if ($this->_nothrow) {
            return null;
        }

        throw new PHPTAL_VariableNotFoundException("Unable to find variable '$varname' in current scope");
    }

    /**
     * helper method for PHPTAL_Context::path()
     *
     * @access private
     */
    private static function pathError($base, $path, $current, $basename)
    {
        if ($current !== $path) {
            $pathinfo = " (in path '.../$path')";
        } else $pathinfo = '';

        if (!empty($basename)) {
            $basename = "'" . $basename . "' ";
        }

        if (is_array($base)) {
            throw new PHPTAL_VariableNotFoundException("Array {$basename}doesn't have key named '$current'$pathinfo");
        }
        if (is_object($base)) {
            throw new PHPTAL_VariableNotFoundException(ucfirst(get_class($base))." object {$basename}doesn't have method/property named '$current'$pathinfo");
        }
        throw new PHPTAL_VariableNotFoundException(trim("Attempt to read property '$current'$pathinfo from ".gettype($base)." value {$basename}"));
    }

    /**
     * Resolve TALES path starting from the first path element.
     * The TALES path : object/method1/10/method2
     * will call : $ctx->path($ctx->object, 'method1/10/method2')
     *
     * This function is very important for PHPTAL performance.
     *
     * This function will become non-static in the future
     *
     * @param mixed  $base    first element of the path ($ctx)
     * @param string $path    rest of the path
     * @param bool   $nothrow is used by phptal_exists(). Prevents this function from
     * throwing an exception when a part of the path cannot be resolved, null is
     * returned instead.
     *
     * @access private
     * @return mixed
     */
    public static function path($base, $path, $nothrow=false)
    {
        if ($base === null) {
            if ($nothrow) return null;
            PHPTAL_Context::pathError($base, $path, $path, $path);
        }

        $chunks  = explode('/', $path);
        $current = null;
        $prev    = null;
        for ($i = 0; $i < count($chunks); $i++) {
for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
            if ($current != $chunks[$i]) { // if not $i-- before continue;
                $prev    = $current;
                $current = $chunks[$i];
            }

            // object handling
            if (is_object($base)) {

                // look for method. Both method_exists and is_callable are required because of __call() and protected methods
                if (method_exists($base, $current) && is_callable(array($base, $current))) {
                    $base = $base->$current();
                    continue;
                }

                // look for property
                if (property_exists($base, $current)) {
                    $base = $base->$current;
                    continue;
                }

                if ($base instanceof ArrayAccess && $base->offsetExists($current)) {
                    $base = $base->offsetGet($current);
                    continue;
                }

                if (($current === 'length' || $current === 'size') && $base instanceof Countable) {
                    $base = count($base);
                    continue;
                }

                // look for isset (priority over __get)
                if (method_exists($base, '__isset')) {
                    if ($base->__isset($current)) {
                        $base = $base->$current;
                        continue;
                    }
                }
                // ask __get and discard if it returns null
                elseif (method_exists($base, '__get')) {
                    $tmp = $base->$current;
                    if (null !== $tmp) {
                        $base = $tmp;
                        continue;
                    }
                }

                // magic method call
                if (method_exists($base, '__call')) {
                    try
                    {
                        $base = $base->__call($current, array());
                        continue;
                    }
                    catch(BadMethodCallException $e) {}

                }

                if (is_callable($base)) {
                    $base = phptal_unravel_closure($base);
                    $i--;
                    continue;
                }

                if ($nothrow) {
                    return null;
                }

                PHPTAL_Context::pathError($base, $path, $current, $prev);
            }

            // array handling
            if (is_array($base)) {
                // key or index
                if (array_key_exists((string)$current, $base)) {
                    $base = $base[$current];
                    continue;
                }

                // virtual methods provided by phptal
                if ($current == 'length' || $current == 'size') {
                    $base = count($base);
                    continue;
                }

                if ($nothrow)
                    return null;

                PHPTAL_Context::pathError($base, $path, $current, $prev);
            }

            // string handling
            if (is_string($base)) {
                // virtual methods provided by phptal
                if ($current == 'length' || $current == 'size') {
                    $base = strlen($base);
                    continue;
                }

                // access char at index
                if (is_numeric($current)) {
                    $base = $base[$current];
                    continue;
                }
            }

            // if this point is reached, then the part cannot be resolved

            if ($nothrow)
                return null;

            PHPTAL_Context::pathError($base, $path, $current, $prev);
        }

        return $base;
    }
}

/**
 * @see PHPTAL_Context::path()
 * @deprecated
 */
function phptal_path($base, $path, $nothrow=false)
{
    return PHPTAL_Context::path($base, $path, $nothrow);
}

/**
 * helper function for chained expressions
 *
 * @param mixed $var value to check
 * @return bool
 * @access private
 */
function phptal_isempty($var)
{
    return $var === null || $var === false || $var === ''
           || ((is_array($var) || $var instanceof Countable) && count($var)===0);
}

/**
 * helper function for conditional expressions
 *
 * @param mixed $var value to check
 * @return bool
 * @access private
 */
function phptal_true($var)
{
    $var = phptal_unravel_closure($var);
    return $var && (!$var instanceof Countable || count($var));
}

/**
 * convert to string and html-escape given value (of any type)
 *
 * @access private
 */
function phptal_escape($var, $encoding)
{
    if (is_string($var)) {
        return htmlspecialchars($var, ENT_QUOTES, $encoding);
    }
    return htmlspecialchars(phptal_tostring($var), ENT_QUOTES, $encoding);
}

/**
 * convert anything to string
 *
 * @access private
 */
function phptal_tostring($var)
{
    if (is_string($var)) {
        return $var;
    } elseif (is_bool($var)) {
        return (int)$var;
    } elseif (is_array($var)) {
        return implode(', ', array_map('phptal_tostring', $var));
    } elseif ($var instanceof SimpleXMLElement) {

        /* There is no sane way to tell apart element and attribute nodes
           in SimpleXML, so here's a guess that if something has no attributes
           or children, and doesn't output <, then it's an attribute */

        $xml = $var->asXML();
        if ($xml[0] === '<' || $var->attributes() || $var->children()) {
            return $xml;
        }
    }
    return (string)phptal_unravel_closure($var);
}

/**
 * unravel the provided expression if it is a closure
 *
 * This will call the base expression and its result
 * as long as it is a Closure.  Once the base (non-Closure)
 * value is found it is returned.
 *
 * This function has no effect on non-Closure expressions
 */
function phptal_unravel_closure($var)
{
    while (is_object($var) && is_callable($var)) {
        $var = call_user_func($var);
    }
    return $var;
}


1		<?php
2		/**
3		* PHPTAL templating engine
4		*
5		* PHP Version 5
6		*
7		* @category HTML
8		* @package PHPTAL
9		* @author Laurent Bedubourg <[email protected]>
10		* @author Kornel Lesiński <[email protected]>
11		* @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
12		* @version SVN: $Id$
13		* @link http://phptal.org/
14		*/
15
16		/**
17		* This class handles template execution context.
18		* Holds template variables and carries state/scope across macro executions.
19		*
20		*/
21		class PHPTAL_Context
		0 ignored issues – show Coding Style Compatibility introduced 2016-03-18 07:31 UTC by Report Bug Copy Issue Report PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions. You can fix this by adding a namespace to your class: namespace YourVendor; class YourClass { } When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries. Loading history...
22		{
23		public $repeat;
24		public $_xmlDeclaration;
25		public $_docType;
26		private $_nothrow;
27		private $_slots = array();
28		private $_slotsStack = array();
29		private $_parentContext = null;
30		private $_globalContext = null;
31		private $_echoDeclarations = false;
32
33		public function __construct()
34		{
35		$this->repeat = new stdClass();
36		}
37
38		public function __clone()
39		{
40		$this->repeat = clone $this->repeat;
41		}
42
43		/**
44		* will switch to this context when popContext() is called
45		*
46		* @return void
47		*/
48		public function setParent(PHPTAL_Context $parent)
49		{
50		$this->_parentContext = $parent;
51		}
52
53		/**
54		* set stdClass object which has property of every global variable
55		* It can use __isset() and __get() [none of them or both]
56		*
57		* @return void
58		*/
59		public function setGlobal(stdClass $globalContext)
60		{
61		$this->_globalContext = $globalContext;
62		}
63
64		/**
65		* save current execution context
66		*
67		* @return Context (new)
68		*/
69		public function pushContext()
70		{
71		$res = clone $this;
72		$res->setParent($this);
73		return $res;
74		}
75
76		/**
77		* get previously saved execution context
78		*
79		* @return Context (old)
80		*/
81		public function popContext()
82		{
83		return $this->_parentContext;
84		}
85
86		/**
87		* @param bool $tf true if DOCTYPE and XML declaration should be echoed immediately, false if buffered
88		*/
89		public function echoDeclarations($tf)
90		{
91		$this->_echoDeclarations = $tf;
92		}
93
94		/**
95		* Set output document type if not already set.
96		*
97		* This method ensure PHPTAL uses the first DOCTYPE encountered (main
98		* template or any macro template source containing a DOCTYPE.
99		*
100		* @param bool $called_from_macro will do nothing if _echoDeclarations is also set
101		*
102		* @return void
103		*/
104	View Code Duplication	public function setDocType($doctype,$called_from_macro)
		0 ignored issues – show Duplication introduced 2016-03-18 07:31 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
105		{
106		// FIXME: this is temporary workaround for problem of DOCTYPE disappearing in cloned PHPTAL object (because clone keeps _parentContext)
107		if (!$this->_docType) {
108		$this->_docType = $doctype;
109		}
110
111		if ($this->_parentContext) {
112		$this->_parentContext->setDocType($doctype, $called_from_macro);
113		} else if ($this->_echoDeclarations) {
114		if (!$called_from_macro) {
115		echo $doctype;
116		} else {
117		throw new PHPTAL_ConfigurationException("Executed macro in file with DOCTYPE when using echoExecute(). This is not supported yet. Remove DOCTYPE or use PHPTAL->execute().");
118		}
119		}
120		else if (!$this->_docType) {
121		$this->_docType = $doctype;
122		}
123		}
124
125		/**
126		* Set output document xml declaration.
127		*
128		* This method ensure PHPTAL uses the first xml declaration encountered
129		* (main template or any macro template source containing an xml
130		* declaration)
131		*
132		* @param bool $called_from_macro will do nothing if _echoDeclarations is also set
133		*
134		* @return void
135		*/
136	View Code Duplication	public function setXmlDeclaration($xmldec, $called_from_macro)
		0 ignored issues – show Duplication introduced 2016-03-18 07:31 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
137		{
138		// FIXME
139		if (!$this->_xmlDeclaration) {
140		$this->_xmlDeclaration = $xmldec;
141		}
142
143		if ($this->_parentContext) {
144		$this->_parentContext->setXmlDeclaration($xmldec, $called_from_macro);
145		} else if ($this->_echoDeclarations) {
146		if (!$called_from_macro) {
147		echo $xmldec."\n";
148		} else {
149		throw new PHPTAL_ConfigurationException("Executed macro in file with XML declaration when using echoExecute(). This is not supported yet. Remove XML declaration or use PHPTAL->execute().");
150		}
151		} else if (!$this->_xmlDeclaration) {
152		$this->_xmlDeclaration = $xmldec;
153		}
154		}
155
156		/**
157		* Activate or deactivate exception throwing during unknown path
158		* resolution.
159		*
160		* @return void
161		*/
162		public function noThrow($bool)
163		{
164		$this->_nothrow = $bool;
165		}
166
167		/**
168		* Returns true if specified slot is filled.
169		*
170		* @return bool
171		*/
172		public function hasSlot($key)
173		{
174		return isset($this->_slots[$key]) \|\| ($this->_parentContext && $this->_parentContext->hasSlot($key));
175		}
176
177		/**
178		* Returns the content of specified filled slot.
179		*
180		* Use echoSlot() whenever you just want to output the slot
181		*
182		* @return string
183		*/
184		public function getSlot($key)
185		{
186		if (isset($this->_slots[$key])) {
187		if (is_string($this->_slots[$key])) {
188		return $this->_slots[$key];
189		}
190		ob_start();
191		call_user_func($this->_slots[$key][0], $this->_slots[$key][1], $this->_slots[$key][2]);
192		return ob_get_clean();
193		} else if ($this->_parentContext) {
194		return $this->_parentContext->getSlot($key);
195		}
196		}
197
198		/**
199		* Immediately echoes content of specified filled slot.
200		*
201		* Equivalent of echo $this->getSlot();
202		*
203		* @return string
204		*/
205		public function echoSlot($key)
206		{
207		if (isset($this->_slots[$key])) {
208		if (is_string($this->_slots[$key])) {
209		echo $this->_slots[$key];
210		} else {
211		call_user_func($this->_slots[$key][0], $this->_slots[$key][1], $this->_slots[$key][2]);
212		}
213		} else if ($this->_parentContext) {
214		return $this->_parentContext->echoSlot($key);
215		}
216		}
217
218		/**
219		* Fill a macro slot.
220		*
221		* @return void
222		*/
223		public function fillSlot($key, $content)
224		{
225		$this->_slots[$key] = $content;
226		if ($this->_parentContext) {
227		// Works around bug with tal:define popping context after fillslot
228		$this->_parentContext->_slots[$key] = $content;
229		}
230		}
231
232		public function fillSlotCallback($key, $callback, $_thistpl, $tpl)
233		{
234		assert('is_callable($callback)');
235		$this->_slots[$key] = array($callback, $_thistpl, $tpl);
236		if ($this->_parentContext) {
237		// Works around bug with tal:define popping context after fillslot
238		$this->_parentContext->_slots[$key] = array($callback, $_thistpl, $tpl);
239		}
240		}
241
242		/**
243		* Push current filled slots on stack.
244		*
245		* @return void
246		*/
247		public function pushSlots()
248		{
249		$this->_slotsStack[] = $this->_slots;
250		$this->_slots = array();
251		}
252
253		/**
254		* Restore filled slots stack.
255		*
256		* @return void
257		*/
258		public function popSlots()
259		{
260		$this->_slots = array_pop($this->_slotsStack);
261		}
262
263		/**
264		* Context setter.
265		*
266		* @return void
267		*/
268		public function __set($varname, $value)
269		{
270		if (preg_match('/^_\|\s/', $varname)) {
271		throw new PHPTAL_InvalidVariableNameException('Template variable error \''.$varname.'\' must not begin with underscore or contain spaces');
272		}
273		$this->$varname = $value;
274		}
275
276		/**
277		* @return bool
278		*/
279		public function __isset($varname)
280		{
281		// it doesn't need to check isset($this->$varname), because PHP does that _before_ calling __isset()
282		return isset($this->_globalContext->$varname) \|\| defined($varname);
283		}
284
285		/**
286		* Context getter.
287		* If variable doesn't exist, it will throw an exception, unless noThrow(true) has been called
288		*
289		* @return mixed
290		*/
291		public function __get($varname)
292		{
293		// PHP checks public properties first, there's no need to support them here
294
295		// must use isset() to allow custom global contexts with __isset()/__get()
296		if (isset($this->_globalContext->$varname)) {
297		return $this->_globalContext->$varname;
298		}
299
300		if (defined($varname)) {
301		return constant($varname);
302		}
303
304		if ($this->_nothrow) {
305		return null;
306		}
307
308		throw new PHPTAL_VariableNotFoundException("Unable to find variable '$varname' in current scope");
309		}
310
311		/**
312		* helper method for PHPTAL_Context::path()
313		*
314		* @access private
315		*/
316		private static function pathError($base, $path, $current, $basename)
317		{
318		if ($current !== $path) {
319		$pathinfo = " (in path '.../$path')";
320		} else $pathinfo = '';
321
322		if (!empty($basename)) {
323		$basename = "'" . $basename . "' ";
324		}
325
326		if (is_array($base)) {
327		throw new PHPTAL_VariableNotFoundException("Array {$basename}doesn't have key named '$current'$pathinfo");
328		}
329		if (is_object($base)) {
330		throw new PHPTAL_VariableNotFoundException(ucfirst(get_class($base))." object {$basename}doesn't have method/property named '$current'$pathinfo");
331		}
332		throw new PHPTAL_VariableNotFoundException(trim("Attempt to read property '$current'$pathinfo from ".gettype($base)." value {$basename}"));
333		}
334
335		/**
336		* Resolve TALES path starting from the first path element.
337		* The TALES path : object/method1/10/method2
338		* will call : $ctx->path($ctx->object, 'method1/10/method2')
339		*
340		* This function is very important for PHPTAL performance.
341		*
342		* This function will become non-static in the future
343		*
344		* @param mixed $base first element of the path ($ctx)
345		* @param string $path rest of the path
346		* @param bool $nothrow is used by phptal_exists(). Prevents this function from
347		* throwing an exception when a part of the path cannot be resolved, null is
348		* returned instead.
349		*
350		* @access private
351		* @return mixed
352		*/
353		public static function path($base, $path, $nothrow=false)
354		{
355		if ($base === null) {
356		if ($nothrow) return null;
357		PHPTAL_Context::pathError($base, $path, $path, $path);
358		}
359
360		$chunks = explode('/', $path);
361		$current = null;
362		$prev = null;
363		for ($i = 0; $i < count($chunks); $i++) {
		0 ignored issues – show Performance Best Practice introduced 2016-03-18 07:31 UTC by Report Bug Copy Issue Report It seems like you are calling the size function `count()` as part of the test condition. You might want to compute the size beforehand, and not on each iteration. If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: for ($i=0; $i<count($array); $i++) { // calls count() on each iteration } // Better for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once } Loading history...
364		if ($current != $chunks[$i]) { // if not $i-- before continue;
365		$prev = $current;
366		$current = $chunks[$i];
367		}
368
369		// object handling
370		if (is_object($base)) {
371
372		// look for method. Both method_exists and is_callable are required because of __call() and protected methods
373		if (method_exists($base, $current) && is_callable(array($base, $current))) {
374		$base = $base->$current();
375		continue;
376		}
377
378		// look for property
379		if (property_exists($base, $current)) {
380		$base = $base->$current;
381		continue;
382		}
383
384		if ($base instanceof ArrayAccess && $base->offsetExists($current)) {
385		$base = $base->offsetGet($current);
386		continue;
387		}
388
389		if (($current === 'length' \|\| $current === 'size') && $base instanceof Countable) {
390		$base = count($base);
391		continue;
392		}
393
394		// look for isset (priority over __get)
395		if (method_exists($base, '__isset')) {
396		if ($base->__isset($current)) {
397		$base = $base->$current;
398		continue;
399		}
400		}
401		// ask __get and discard if it returns null
402		elseif (method_exists($base, '__get')) {
403		$tmp = $base->$current;
404		if (null !== $tmp) {
405		$base = $tmp;
406		continue;
407		}
408		}
409
410		// magic method call
411		if (method_exists($base, '__call')) {
412		try
413		{
414		$base = $base->__call($current, array());
415		continue;
416		}
417		catch(BadMethodCallException $e) {}
		0 ignored issues – show Coding Style Comprehensibility introduced 2016-03-18 07:31 UTC by Report Bug Copy Issue Report Consider adding a comment why this CATCH block is empty. Loading history...
418		}
419
420		if (is_callable($base)) {
421		$base = phptal_unravel_closure($base);
422		$i--;
423		continue;
424		}
425
426		if ($nothrow) {
427		return null;
428		}
429
430		PHPTAL_Context::pathError($base, $path, $current, $prev);
431		}
432
433		// array handling
434		if (is_array($base)) {
435		// key or index
436		if (array_key_exists((string)$current, $base)) {
437		$base = $base[$current];
438		continue;
439		}
440
441		// virtual methods provided by phptal
442		if ($current == 'length' \|\| $current == 'size') {
443		$base = count($base);
444		continue;
445		}
446
447		if ($nothrow)
448		return null;
449
450		PHPTAL_Context::pathError($base, $path, $current, $prev);
451		}
452
453		// string handling
454		if (is_string($base)) {
455		// virtual methods provided by phptal
456		if ($current == 'length' \|\| $current == 'size') {
457		$base = strlen($base);
458		continue;
459		}
460
461		// access char at index
462		if (is_numeric($current)) {
463		$base = $base[$current];
464		continue;
465		}
466		}
467
468		// if this point is reached, then the part cannot be resolved
469
470		if ($nothrow)
471		return null;
472
473		PHPTAL_Context::pathError($base, $path, $current, $prev);
474		}
475
476		return $base;
477		}
478		}
479
480		/**
481		* @see PHPTAL_Context::path()
482		* @deprecated
483		*/
484		function phptal_path($base, $path, $nothrow=false)
485		{
486		return PHPTAL_Context::path($base, $path, $nothrow);
487		}
488
489		/**
490		* helper function for chained expressions
491		*
492		* @param mixed $var value to check
493		* @return bool
494		* @access private
495		*/
496		function phptal_isempty($var)
497		{
498		return $var === null \|\| $var === false \|\| $var === ''
499		\|\| ((is_array($var) \|\| $var instanceof Countable) && count($var)===0);
500		}
501
502		/**
503		* helper function for conditional expressions
504		*
505		* @param mixed $var value to check
506		* @return bool
507		* @access private
508		*/
509		function phptal_true($var)
510		{
511		$var = phptal_unravel_closure($var);
512		return $var && (!$var instanceof Countable \|\| count($var));
513		}
514
515		/**
516		* convert to string and html-escape given value (of any type)
517		*
518		* @access private
519		*/
520		function phptal_escape($var, $encoding)
521		{
522		if (is_string($var)) {
523		return htmlspecialchars($var, ENT_QUOTES, $encoding);
524		}
525		return htmlspecialchars(phptal_tostring($var), ENT_QUOTES, $encoding);
526		}
527
528		/**
529		* convert anything to string
530		*
531		* @access private
532		*/
533		function phptal_tostring($var)
534		{
535		if (is_string($var)) {
536		return $var;
537		} elseif (is_bool($var)) {
538		return (int)$var;
539		} elseif (is_array($var)) {
540		return implode(', ', array_map('phptal_tostring', $var));
541		} elseif ($var instanceof SimpleXMLElement) {
542
543		/* There is no sane way to tell apart element and attribute nodes
544		in SimpleXML, so here's a guess that if something has no attributes
545		or children, and doesn't output <, then it's an attribute */
546
547		$xml = $var->asXML();
548		if ($xml[0] === '<' \|\| $var->attributes() \|\| $var->children()) {
549		return $xml;
550		}
551		}
552		return (string)phptal_unravel_closure($var);
553		}
554
555		/**
556		* unravel the provided expression if it is a closure
557		*
558		* This will call the base expression and its result
559		* as long as it is a Closure. Once the base (non-Closure)
560		* value is found it is returned.
561		*
562		* This function has no effect on non-Closure expressions
563		*/
564		function phptal_unravel_closure($var)
565		{
566		while (is_object($var) && is_callable($var)) {
567		$var = call_user_func($var);
568		}
569		return $var;
570		}
571

phptal / PHPTAL

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Context.php ➔ phptal_unravel_closure() A

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