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1<?php
2
3namespace GorillaClaw;
4
5class Hook
6{
7    public $function_key;
8    public $callback;
9    public $hook_name;
10    public $priority;
11    public $that;
12    public $original_callback;
13    
14    /**
15     * __construct
16     *
17     * @param  mixed $hook_name
18     * @param  mixed $callback
19     * @param  mixed $priority
20     * @param  mixed $function_key
21     * @return void
22     */
23    
24    function __construct($hook_name, $callback, $priority, $function_key)
25    {
26        global $wp_filter;
27
28        $this->function_key = $function_key;
29        $this->callback = $callback;
30        $this->hook_name = $hook_name;
31        $this->priority = $priority;
32        $this->that = null;
33        $this->original_callback = isset($wp_filter[$this->hook_name]) ? $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] : false;
34
35        if (is_array($callback['function'])) {
36            if (is_object($callback['function'][0])) { 
37                $this->that = &$callback['function'][0];
38            } else {
39                $this->that = $callback['function'][0];
40            }
41        }
42    }
43    
44    /**
45     * Remove and un-hook the handler
46     *
47     * @return bool `true` on success
48     */
49    
50    public function remove(): bool
51    {
52        return remove_filter($this->hook_name, $this->callback['function'], $this->priority);
53    }
54    
55    /**
56     * replace
57     *
58     * @param  mixed $callback
59     * @return bool 
60     */
61    
62    public function replace(callable $callback): bool
63    {
64        global $wp_filter;
65        if (
66            isset($wp_filter[$this->hook_name]) &&
67            isset($wp_filter[$this->hook_name]->callbacks[$this->priority]) &&
68            isset($wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key])
69        ) {
70
71            if (!is_null($this->that) && is_object($this->that)) {
72                // $this rebinding
73                $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] = (new HookProxy($callback, $this->that))->__cb;
74                $this->callback['function'] = [&$this->that, $callback];
75            } elseif (!is_null($this->that) && is_string($this->that)) {
76                // Static binding
77                $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] = $callback;
78                $this->callback['function'] =  $callback;
79            } elseif (is_null($this->that)) {
80                // No rescoping or binding
81                $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] = $callback;
82                $this->callback['function'] = $callback;
83            } 
84            
85            return true;
86        }
87
88        return false;
89    }
90        
91    /**
92     * rebind
93     *
94     * @param  mixed $hook_name
95     * @param  mixed $callback
96     * @param  mixed $priority
97     * @param  mixed $accepted_args
98     * @return void
99     */
100
101    public function rebind(string $hook_name, callable $callback, int $priority = 10, $accepted_args = 1) {
102        if(is_null($this->that)) {
103            throw new \ErrorException('Cannot rebind from a non-object hook');
104        }
105
106        add_filter($hook_name, (new HookProxy($callback, $this->that))->__cb, $priority, $accepted_args);
107    }
108
109    public function inject($before, $after = false) {
110        $original_callback = &$this->original_callback;
111
112        $this->replace(function(...$args) use ($before, $after, $original_callback) {
113            if($before) {
114                if(_is_callable_object($original_callback)) {
115                    $args[0] = (new HookProxy($before, $original_callback[0]))->__cb(...$args); 
116                } else {
117                    $args[0] = $before(...$args);
118                }
119            }
120                    
121            $args[0] = call_user_func_array($original_callback, $args);
122            
123            if($after) {
124                if(_is_callable_object($original_callback)) {
125                    $args[0] = (new HookProxy($after, $original_callback[0]))->__cb(...$args); 
126                } else {
127                    $args[0] = $after(...$args);
128                }
129            }
130
131            return $args[0];
132        });
133    }
134}

Branches

Below are the source code lines that represent each code branch as identified by Xdebug. Please note a branch is not necessarily coterminous with a line, a line may contain multiple branches and therefore show up more than once. Please also be aware that some branches may be implicit rather than explicit, e.g. an if statement always has an else as part of its logical flow even if you didn't write one.

Hook->__construct
24    function __construct($hook_name, $callback, $priority, $function_key)
25    {
26        global $wp_filter;
27
28        $this->function_key = $function_key;
29        $this->callback = $callback;
30        $this->hook_name = $hook_name;
31        $this->priority = $priority;
32        $this->that = null;
33        $this->original_callback = isset($wp_filter[$this->hook_name]) ? $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] : false;
33        $this->original_callback = isset($wp_filter[$this->hook_name]) ? $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] : false;
33        $this->original_callback = isset($wp_filter[$this->hook_name]) ? $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] : false;
33        $this->original_callback = isset($wp_filter[$this->hook_name]) ? $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] : false;
34
35        if (is_array($callback['function'])) {
36            if (is_object($callback['function'][0])) { 
37                $this->that = &$callback['function'][0];
39                $this->that = $callback['function'][0];
40            }
41        }
42    }
42    }
Hook->inject
109    public function inject($before, $after = false) {
110        $original_callback = &$this->original_callback;
111
112        $this->replace(function(...$args) use ($before, $after, $original_callback) {
113            if($before) {
114                if(_is_callable_object($original_callback)) {
115                    $args[0] = (new HookProxy($before, $original_callback[0]))->__cb(...$args); 
116                } else {
117                    $args[0] = $before(...$args);
118                }
119            }
120                    
121            $args[0] = call_user_func_array($original_callback, $args);
122            
123            if($after) {
124                if(_is_callable_object($original_callback)) {
125                    $args[0] = (new HookProxy($after, $original_callback[0]))->__cb(...$args); 
126                } else {
127                    $args[0] = $after(...$args);
128                }
129            }
130
131            return $args[0];
132        });
133    }
Hook->rebind
101    public function rebind(string $hook_name, callable $callback, int $priority = 10, $accepted_args = 1) {
102        if(is_null($this->that)) {
103            throw new \ErrorException('Cannot rebind from a non-object hook');
106        add_filter($hook_name, (new HookProxy($callback, $this->that))->__cb, $priority, $accepted_args);
107    }
Hook->remove
52        return remove_filter($this->hook_name, $this->callback['function'], $this->priority);
53    }
Hook->replace
62    public function replace(callable $callback): bool
63    {
64        global $wp_filter;
65        if (
66            isset($wp_filter[$this->hook_name]) &&
67            isset($wp_filter[$this->hook_name]->callbacks[$this->priority]) &&
67            isset($wp_filter[$this->hook_name]->callbacks[$this->priority]) &&
68            isset($wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key])
68            isset($wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key])
71            if (!is_null($this->that) && is_object($this->that)) {
71            if (!is_null($this->that) && is_object($this->that)) {
71            if (!is_null($this->that) && is_object($this->that)) {
73                $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] = (new HookProxy($callback, $this->that))->__cb;
74                $this->callback['function'] = [&$this->that, $callback];
75            } elseif (!is_null($this->that) && is_string($this->that)) {
75            } elseif (!is_null($this->that) && is_string($this->that)) {
75            } elseif (!is_null($this->that) && is_string($this->that)) {
77                $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] = $callback;
78                $this->callback['function'] =  $callback;
79            } elseif (is_null($this->that)) {
81                $wp_filter[$this->hook_name]->callbacks[$this->priority][$this->function_key]['function'] = $callback;
82                $this->callback['function'] = $callback;
83            } 
84            
85            return true;
85            return true;
88        return false;
89    }
GorillaClaw\{closure:/home/runner/work/gorilla-claw/gorilla-claw/src/class/Hook.php:112-132}
112        $this->replace(function(...$args) use ($before, $after, $original_callback) {
113            if($before) {
114                if(_is_callable_object($original_callback)) {
115                    $args[0] = (new HookProxy($before, $original_callback[0]))->__cb(...$args); 
117                    $args[0] = $before(...$args);
118                }
119            }
120                    
121            $args[0] = call_user_func_array($original_callback, $args);
121            $args[0] = call_user_func_array($original_callback, $args);
122            
123            if($after) {
124                if(_is_callable_object($original_callback)) {
125                    $args[0] = (new HookProxy($after, $original_callback[0]))->__cb(...$args); 
127                    $args[0] = $after(...$args);
128                }
129            }
130
131            return $args[0];
131            return $args[0];
132        });