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1 | <?php |
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2 | /** |
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3 | * Whoops - php errors for cool kids |
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4 | * @author Filipe Dobreira <http://github.com/filp> |
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5 | */ |
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6 | |||
7 | namespace Whoops\Exception; |
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8 | |||
9 | use ArrayAccess; |
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10 | use ArrayIterator; |
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11 | use Countable; |
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12 | use IteratorAggregate; |
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13 | use Serializable; |
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14 | use UnexpectedValueException; |
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15 | |||
16 | /** |
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17 | * Exposes a fluent interface for dealing with an ordered list |
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18 | * of stack-trace frames. |
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19 | */ |
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20 | class FrameCollection implements ArrayAccess, IteratorAggregate, Serializable, Countable |
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21 | { |
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22 | /** |
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23 | * @var array[] |
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24 | */ |
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25 | private $frames; |
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26 | |||
27 | /** |
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28 | * @param array $frames |
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29 | */ |
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30 | 1 | public function __construct(array $frames) |
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31 | { |
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32 | $this->frames = array_map(function ($frame) { |
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33 | 1 | return new Frame($frame); |
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34 | 1 | }, $frames); |
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35 | 1 | } |
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36 | |||
37 | /** |
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38 | * Filters frames using a callable, returns the same FrameCollection |
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39 | * |
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40 | * @param callable $callable |
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41 | * @return FrameCollection |
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42 | */ |
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43 | 1 | public function filter($callable) |
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44 | { |
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45 | 1 | $this->frames = array_values(array_filter($this->frames, $callable)); |
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0 ignored issues
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46 | 1 | return $this; |
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47 | } |
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48 | |||
49 | /** |
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50 | * Map the collection of frames |
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51 | * |
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52 | * @param callable $callable |
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53 | * @return FrameCollection |
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54 | */ |
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55 | 2 | public function map($callable) |
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56 | { |
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57 | // Contain the map within a higher-order callable |
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58 | // that enforces type-correctness for the $callable |
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59 | $this->frames = array_map(function ($frame) use ($callable) { |
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60 | 2 | $frame = call_user_func($callable, $frame); |
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61 | |||
62 | 2 | if (!$frame instanceof Frame) { |
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63 | 1 | throw new UnexpectedValueException( |
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64 | 1 | "Callable to " . __CLASS__ . "::map must return a Frame object" |
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65 | 1 | ); |
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66 | } |
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67 | |||
68 | 1 | return $frame; |
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69 | 2 | }, $this->frames); |
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70 | |||
71 | 1 | return $this; |
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72 | } |
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73 | |||
74 | /** |
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75 | * Returns an array with all frames, does not affect |
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76 | * the internal array. |
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77 | * |
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78 | * @todo If this gets any more complex than this, |
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79 | * have getIterator use this method. |
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80 | * @see FrameCollection::getIterator |
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81 | * @return array |
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82 | */ |
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83 | 2 | public function getArray() |
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84 | { |
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85 | 2 | return $this->frames; |
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86 | } |
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87 | |||
88 | /** |
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89 | * @see IteratorAggregate::getIterator |
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90 | * @return ArrayIterator |
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91 | */ |
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92 | 2 | public function getIterator() |
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93 | { |
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94 | 2 | return new ArrayIterator($this->frames); |
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95 | } |
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96 | |||
97 | /** |
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98 | * @see ArrayAccess::offsetExists |
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99 | * @param int $offset |
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100 | */ |
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101 | 1 | public function offsetExists($offset) |
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102 | { |
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103 | 1 | return isset($this->frames[$offset]); |
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104 | } |
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105 | |||
106 | /** |
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107 | * @see ArrayAccess::offsetGet |
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108 | * @param int $offset |
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109 | */ |
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110 | 1 | public function offsetGet($offset) |
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111 | { |
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112 | 1 | return $this->frames[$offset]; |
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113 | } |
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114 | |||
115 | /** |
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116 | * @see ArrayAccess::offsetSet |
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117 | * @param int $offset |
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118 | */ |
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119 | 1 | public function offsetSet($offset, $value) |
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120 | { |
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121 | 1 | throw new \Exception(__CLASS__ . ' is read only'); |
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122 | } |
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123 | |||
124 | /** |
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125 | * @see ArrayAccess::offsetUnset |
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126 | * @param int $offset |
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127 | */ |
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128 | 1 | public function offsetUnset($offset) |
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129 | { |
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130 | 1 | throw new \Exception(__CLASS__ . ' is read only'); |
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131 | } |
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132 | |||
133 | /** |
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134 | * @see Countable::count |
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135 | * @return int |
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136 | */ |
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137 | 2 | public function count() |
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138 | { |
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139 | 2 | return count($this->frames); |
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140 | } |
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141 | |||
142 | /** |
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143 | * Count the frames that belongs to the application. |
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144 | * |
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145 | * @return int |
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146 | */ |
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147 | public function countIsApplication() |
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148 | { |
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149 | return count(array_filter($this->frames, function (Frame $f) { |
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150 | return $f->isApplication(); |
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151 | })); |
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152 | } |
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153 | |||
154 | /** |
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155 | * @see Serializable::serialize |
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156 | * @return string |
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157 | */ |
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158 | 1 | public function serialize() |
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159 | { |
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160 | 1 | return serialize($this->frames); |
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161 | } |
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162 | |||
163 | /** |
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164 | * @see Serializable::unserialize |
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165 | * @param string $serializedFrames |
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166 | */ |
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167 | 1 | public function unserialize($serializedFrames) |
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168 | { |
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169 | 1 | $this->frames = unserialize($serializedFrames); |
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170 | 1 | } |
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171 | |||
172 | /** |
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173 | * @param Frame[] $frames Array of Frame instances, usually from $e->getPrevious() |
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174 | */ |
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175 | public function prependFrames(array $frames) |
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176 | { |
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177 | $this->frames = array_merge($frames, $this->frames); |
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178 | } |
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179 | |||
180 | /** |
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181 | * Gets the innermost part of stack trace that is not the same as that of outer exception |
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182 | * |
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183 | * @param FrameCollection $parentFrames Outer exception frames to compare tail against |
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184 | * @return Frame[] |
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185 | */ |
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186 | 1 | public function topDiff(FrameCollection $parentFrames) |
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187 | { |
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188 | 1 | $diff = $this->frames; |
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189 | |||
190 | 1 | $parentFrames = $parentFrames->getArray(); |
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191 | 1 | $p = count($parentFrames)-1; |
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192 | |||
193 | 1 | for ($i = count($diff)-1; $i >= 0 && $p >= 0; $i--) { |
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194 | /** @var Frame $tailFrame */ |
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195 | 1 | $tailFrame = $diff[$i]; |
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196 | 1 | if ($tailFrame->equals($parentFrames[$p])) { |
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197 | 1 | unset($diff[$i]); |
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198 | 1 | } |
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199 | 1 | $p--; |
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200 | 1 | } |
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201 | 1 | return $diff; |
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202 | } |
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203 | } |
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204 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..