Complex classes like Runtime often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Runtime, and based on these observations, apply Extract Interface, too.
1 | <?php |
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27 | class Runtime extends Encoder |
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28 | { |
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29 | const DEBUG_ERROR_LOG = 1; |
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30 | const DEBUG_ERROR_EXCEPTION = 2; |
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31 | const DEBUG_TAGS = 4; |
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32 | const DEBUG_TAGS_ANSI = 12; |
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33 | const DEBUG_TAGS_HTML = 20; |
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34 | |||
35 | /** |
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36 | * Output debug info. |
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37 | * |
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38 | * @param string $v expression |
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39 | * @param string $f runtime function name |
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40 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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41 | * |
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42 | * @expect '{{123}}' when input '123', 'miss', array('flags' => array('debug' => Runtime::DEBUG_TAGS), 'runtime' => 'LightnCandy\\Runtime'), '' |
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43 | * @expect '<!--MISSED((-->{{#123}}<!--))--><!--SKIPPED--><!--MISSED((-->{{/123}}<!--))-->' when input '123', 'wi', array('flags' => array('debug' => Runtime::DEBUG_TAGS_HTML), 'runtime' => 'LightnCandy\\Runtime'), false, null, false, function () {return 'A';} |
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44 | */ |
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45 | 9 | public static function debug($v, $f, $cx) { |
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80 | |||
81 | /** |
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82 | * Handle error by error_log or throw exception. |
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83 | * |
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84 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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85 | * @param string $err error message |
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86 | * |
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87 | * @throws \Exception |
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88 | */ |
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89 | 12 | public static function err($cx, $err) { |
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98 | |||
99 | /** |
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100 | * Handle missing data error. |
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101 | * |
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102 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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103 | * @param string $v expression |
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104 | */ |
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105 | 5 | public static function miss($cx, $v) { |
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108 | |||
109 | /** |
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110 | * For {{log}} . |
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111 | * |
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112 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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113 | * @param string $v expression |
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114 | */ |
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115 | public static function lo($cx, $v) { |
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119 | |||
120 | /** |
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121 | * Resursive lookup variable and helpers. This is slow and will only be used for instance property or method detection or lambdas. |
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122 | * |
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123 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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124 | * @param array|string|boolean|integer|double|null $in current context |
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125 | * @param array<array|string|integer> $base current variable context |
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126 | * @param array<string|integer> $path array of names for path |
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127 | * @param array|null $args extra arguments for lambda |
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128 | * |
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129 | * @return null|string Return the value or null when not found |
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130 | * |
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131 | * @expect null when input array('scopes' => array(), 'flags' => array('prop' => 0, 'method' => 0, 'mustlok' => 0)), null, 0, array('a', 'b') |
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132 | * @expect 3 when input array('scopes' => array(), 'flags' => array('prop' => 0, 'method' => 0), 'mustlok' => 0), null, array('a' => array('b' => 3)), array('a', 'b') |
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133 | * @expect null when input array('scopes' => array(), 'flags' => array('prop' => 0, 'method' => 0, 'mustlok' => 0)), null, (Object) array('a' => array('b' => 3)), array('a', 'b') |
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134 | * @expect 3 when input array('scopes' => array(), 'flags' => array('prop' => 1, 'method' => 0, 'mustlok' => 0)), null, (Object) array('a' => array('b' => 3)), array('a', 'b') |
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135 | */ |
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136 | 387 | public static function v($cx, $in, $base, $path, $args = null) { |
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196 | |||
197 | /** |
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198 | * For {{#if}} . |
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199 | * |
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200 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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201 | * @param array<array|string|integer>|string|integer|null $v value to be tested |
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202 | * @param boolean $zero include zero as true |
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203 | * |
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204 | * @return boolean Return true when the value is not null nor false. |
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205 | * |
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206 | * @expect false when input array(), null, false |
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207 | * @expect false when input array(), 0, false |
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208 | * @expect true when input array(), 0, true |
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209 | * @expect false when input array(), false, false |
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210 | * @expect true when input array(), true, false |
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211 | * @expect true when input array(), 1, false |
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212 | * @expect false when input array(), '', false |
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213 | * @expect false when input array(), array(), false |
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214 | * @expect true when input array(), array(''), false |
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215 | * @expect true when input array(), array(0), false |
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216 | */ |
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217 | 74 | public static function ifvar($cx, $v, $zero) { |
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220 | |||
221 | /** |
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222 | * For {{^var}} . |
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223 | * |
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224 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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225 | * @param array<array|string|integer>|string|integer|null $v value to be tested |
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226 | * |
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227 | * @return boolean Return true when the value is not null nor false. |
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228 | * |
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229 | * @expect true when input array(), null |
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230 | * @expect false when input array(), 0 |
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231 | * @expect true when input array(), false |
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232 | * @expect false when input array(), 'false' |
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233 | * @expect true when input array(), array() |
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234 | * @expect false when input array(), array('1') |
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235 | */ |
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236 | 37 | public static function isec($cx, $v) { |
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239 | |||
240 | /** |
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241 | * For {{var}} . |
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242 | * |
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243 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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244 | * @param array<array|string|integer>|string|integer|null $var value to be htmlencoded |
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245 | * |
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246 | * @return string The htmlencoded value of the specified variable |
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247 | * |
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248 | * @expect 'a' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), 'a' |
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249 | * @expect 'a&b' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), 'a&b' |
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250 | * @expect 'a'b' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), 'a\'b' |
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251 | * @expect 'a&b' when input null, new \LightnCandy\SafeString('a&b') |
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252 | */ |
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253 | 46 | public static function enc($cx, $var) { |
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260 | |||
261 | /** |
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262 | * For {{var}} , do html encode just like handlebars.js . |
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263 | * |
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264 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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265 | * @param array<array|string|integer>|string|integer|null $var value to be htmlencoded |
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266 | * |
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267 | * @return string The htmlencoded value of the specified variable |
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268 | * |
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269 | * @expect 'a' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), 'a' |
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270 | * @expect 'a&b' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), 'a&b' |
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271 | * @expect 'a'b' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), 'a\'b' |
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272 | * @expect '`a'b' when input array('flags' => array('mustlam' => 0, 'lambda' => 0)), '`a\'b' |
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273 | */ |
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274 | 335 | public static function encq($cx, $var) { |
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281 | |||
282 | /** |
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283 | * For {{#var}} or {{#each}} . |
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284 | * |
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285 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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286 | * @param array<array|string|integer>|string|integer|null $v value for the section |
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287 | * @param array<string>|null $bp block parameters |
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288 | * @param array<array|string|integer>|string|integer|null $in input data with current scope |
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289 | * @param boolean $each true when rendering #each |
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290 | * @param Closure $cb callback function to render child context |
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291 | * @param Closure|null $else callback function to render child context when {{else}} |
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292 | * |
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293 | * @return string The rendered string of the section |
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294 | * |
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295 | * @expect '' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), false, null, false, false, function () {return 'A';} |
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296 | * @expect '' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), null, null, null, false, function () {return 'A';} |
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297 | * @expect 'A' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), true, null, true, false, function () {return 'A';} |
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298 | * @expect 'A' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), 0, null, 0, false, function () {return 'A';} |
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299 | * @expect '-a=' when input array('scopes' => array(), 'flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), array('a'), null, array('a'), false, function ($c, $i) {return "-$i=";} |
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300 | * @expect '-a=-b=' when input array('scopes' => array(), 'flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), array('a','b'), null, array('a','b'), false, function ($c, $i) {return "-$i=";} |
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301 | * @expect '' when input array('scopes' => array(), 'flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), 'abc', null, 'abc', true, function ($c, $i) {return "-$i=";} |
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302 | * @expect '-b=' when input array('scopes' => array(), 'flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), array('a' => 'b'), null, array('a' => 'b'), true, function ($c, $i) {return "-$i=";} |
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303 | * @expect '1' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), 'b', null, 'b', false, function ($c, $i) {return count($i);} |
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304 | * @expect '1' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), 1, null, 1, false, function ($c, $i) {return print_r($i, true);} |
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305 | * @expect '0' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), 0, null, 0, false, function ($c, $i) {return print_r($i, true);} |
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306 | * @expect '{"b":"c"}' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), array('b' => 'c'), null, array('b' => 'c'), false, function ($c, $i) {return json_encode($i);} |
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307 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), array(), null, 0, true, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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308 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), array(), null, 0, false, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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309 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), false, null, 0, true, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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310 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), false, null, 0, false, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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311 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), '', null, 0, true, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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312 | * @expect 'cb' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), '', null, 0, false, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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313 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), 0, null, 0, true, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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314 | * @expect 'cb' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), 0, null, 0, false, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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315 | * @expect 'inv' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'lambda' => 0)), new stdClass, null, 0, true, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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316 | * @expect 'cb' when input array('flags' => array('spvar' => 0, 'mustlam' => 0, 'mustsec' => 0, 'lambda' => 0)), new stdClass, null, 0, false, function ($c, $i) {return 'cb';}, function ($c, $i) {return 'inv';} |
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317 | * @expect '268' when input array('scopes' => array(), 'flags' => array('spvar' => 1, 'mustlam' => 0, 'lambda' => 0), 'sp_vars'=>array('root' => 0)), array(1,3,4), null, 0, false, function ($c, $i) {return $i * 2;} |
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318 | * @expect '038' when input array('scopes' => array(), 'flags' => array('spvar' => 1, 'mustlam' => 0, 'lambda' => 0), 'sp_vars'=>array('root' => 0)), array(1,3,'a'=>4), null, 0, true, function ($c, $i) {return $i * $c['sp_vars']['index'];} |
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319 | */ |
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320 | 165 | public static function sec($cx, $v, $bp, $in, $each, $cb, $else = null) { |
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432 | |||
433 | /** |
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434 | * For {{#with}} . |
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435 | * |
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436 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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437 | * @param array<array|string|integer>|string|integer|null $v value to be the new context |
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438 | * @param array<array|string|integer>|string|integer|null $in input data with current scope |
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439 | * @param array<string>|null $bp block parameters |
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440 | * @param Closure $cb callback function to render child context |
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441 | * @param Closure|null $else callback function to render child context when {{else}} |
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442 | * |
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443 | * @return string The rendered string of the token |
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444 | * |
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445 | * @expect '' when input array(), false, null, false, function () {return 'A';} |
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446 | * @expect '' when input array(), null, null, null, function () {return 'A';} |
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447 | * @expect '{"a":"b"}' when input array(), array('a'=>'b'), null, array('a'=>'c'), function ($c, $i) {return json_encode($i);} |
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448 | * @expect '-b=' when input array(), 'b', null, array('a'=>'b'), function ($c, $i) {return "-$i=";} |
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449 | */ |
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450 | 28 | public static function wi($cx, $v, $bp, $in, $cb, $else = null) { |
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466 | |||
467 | /** |
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468 | * Get merged context. |
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469 | * |
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470 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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471 | * @param array<array|string|integer>|string|integer|null $a the context to be merged |
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472 | * @param array<array|string|integer>|string|integer|null $b the new context to overwrite |
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473 | * |
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474 | * @return array<array|string|integer>|string|integer the merged context object |
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475 | * |
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476 | */ |
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477 | 93 | public static function m($cx, $a, $b) { |
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491 | |||
492 | /** |
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493 | * For {{> partial}} . |
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494 | * |
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495 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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496 | * @param string $p partial name |
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497 | * @param array<array|string|integer>|string|integer|null $v value to be the new context |
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498 | * |
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499 | * @return string The rendered string of the partial |
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500 | * |
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501 | */ |
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502 | 88 | public static function p($cx, $p, $v, $pid, $sp = '') { |
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514 | |||
515 | /** |
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516 | * For {{#* inlinepartial}} . |
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517 | * |
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518 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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519 | * @param string $p partial name |
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520 | * @param Closure $code the compiled partial code |
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521 | * |
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522 | */ |
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523 | 7 | public static function in(&$cx, $p, $code) { |
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526 | |||
527 | /* For single custom helpers. |
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528 | * |
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529 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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530 | * @param string $ch the name of custom helper to be executed |
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531 | * @param array<array|string|integer>|string|integer|null $vars variables for the helper |
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532 | * @param string $op the name of variable resolver. should be one of: 'raw', 'enc', or 'encq'. |
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533 | * @param array<string,array|string|integer> $_this current rendering context for the helper |
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534 | * |
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535 | * @return string The rendered string of the token |
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536 | */ |
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537 | 119 | public static function hbch($cx, $ch, $vars, $op, &$_this) { |
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556 | |||
557 | /** |
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558 | * For block custom helpers. |
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559 | * |
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560 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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561 | * @param string $ch the name of custom helper to be executed |
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562 | * @param array<array|string|integer>|string|integer|null $vars variables for the helper |
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563 | * @param array<string,array|string|integer> $_this current rendering context for the helper |
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564 | * @param boolean $inverted the logic will be inverted |
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565 | * @param Closure|null $cb callback function to render child context |
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566 | * @param Closure|null $else callback function to render child context when {{else}} |
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567 | * |
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568 | * @return string The rendered string of the token |
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569 | */ |
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570 | 56 | public static function hbbch($cx, $ch, $vars, &$_this, $inverted, $cb, $else = null) { |
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644 | |||
645 | /** |
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646 | * Execute custom helper with prepared options |
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647 | * |
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648 | * @param array<string,array|string|integer> $cx render time context for lightncandy |
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649 | * @param string $ch the name of custom helper to be executed |
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650 | * @param array<array|string|integer>|string|integer|null $vars variables for the helper |
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651 | * @param array<string,array|string|integer> $options the options object |
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652 | * |
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653 | * @return string The rendered string of the token |
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654 | */ |
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655 | 165 | public static function exch($cx, $ch, $vars, &$options) { |
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673 | } |
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674 |
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: