Online PHP editor | perf for QSkf7

<?php interface ILexer { /** * return associative array containing tokens for parser * @param string $input code to tokenize * @return array */ public function tokenize($input); } interface INameValidator { /** * Checks if name is valid. In a case of failure trigger syntax error. * @param string $name * @return void */ public function validate($name); } interface IParser { /** * Sets array of keywords. * @param array $keywords associative array where key is keyword and value respective php instruction. * @return void */ public function setKeywords(array $keywords); /** * Parses code. Checks for syntax errors. * If no error occurs returns data for compiler to assemble php class * otherwise trigger syntax error. * @param string $input code to parse. * @return array IParserResult */ public function parse($input); } interface IParseResult { public function getDefinition(); public function getName(); public function getConstants(); } interface ICompiler { /** * Compiles enum into valid php class * @param string $input code to compile. * @return string */ public function compile($input); } interface IErrorManager { /** * Triggers fatal error. * @param string $message error message * @return void */ public function ariseFatal($message); /** * Triggers warning. * @param string $message error message * @return void */ public function ariseWarning($message); /** * Triggers notice. * @param string $message error message * @return void */ public function ariseNotice($message); } //I know this lexer sucks. class Lexer extends CompilerElement implements ILexer { // Potential hidden dependency private $specialChars = array( '{' => 'start_body', '}' => 'end_body' ); public function tokenize($input) { if (!is_string($input)) { $this->getErrorManager()->ariseFatal(get_class($this).'::parse expects parameter 1 to be string. '.gettype($input).' given.'); } $tokens = array(); $token = $this->getEmptyToken(); $tokenMetadata = $this->getDefaultTokenMetadata(); $inputLength = strlen($input); for ($i = 0; $i < $inputLength; $i++) { $current = $input[$i]; //check if special character if (isset($this->specialChars[$current])) { $token[$this->specialChars[$current]] = $current; if ($i !== $inputLength - 1) continue; } if (isset($token['end_body'])) { $tokens[] = $token; $token = $this->getEmptyToken(); $tokenMetadata = $this->getDefaultTokenMetadata(); if ($i === $inputLength - 1) continue; } $isWhitespace = ctype_space($current); if (isset($token['start_body'])) { //skip if whitespace if ($isWhitespace) { continue; } if ($current === ',') { $tokenMetadata['newItem'] = true; $tokenMetadata['newItemNameResolved'] = false; continue; } if ($current === '=') { $tokenMetadata['newItemNameResolved'] = true; continue; } if ($tokenMetadata['newItem']) { $token['e_'.$current] = null; $tokenMetadata['newItem'] = false; } else { end($token); $lastKey = key($token); if (!$tokenMetadata['newItemNameResolved']) { unset($token[$lastKey]); $token[$lastKey.$current] = null; } else { $token[$lastKey] .= $current; } } continue; } if (!$tokenMetadata['typeResolved']) { if ($isWhitespace) { if (strlen($token['type']) === 0) { continue; } else { $tokenMetadata['typeResolved'] = true; } } else { $token['type'] .= $current; } } else if (!$tokenMetadata['nameResolved']) { if ($isWhitespace) { if (strlen($token['name']) === 0) { continue; } else { $tokenMetadata['nameResolved'] = true; } } else { $token['name'] .= $current; } } } return $tokens; } private function getEmptyToken() { return array( 'type' => '', 'name' => '' ); } private function getDefaultTokenMetadata() { return array( 'typeResolved' => false, 'nameResolved' => false, 'newItem' => true, 'newItemNameResolved' => false ); } public function __construct(IErrorManager $errorManager) { parent::__construct($errorManager); } } class NameValidator extends CompilerElement implements INameValidator { private $allowedChars; public function validate($name) { if (!is_string($name)) { $this->getErrorManager()->ariseFatal(get_class($this).'::validate expects parameter 1 to be string. '.gettype($name).' given.'); } $nameLength = strlen($name); for ($i = 0; $i < $nameLength; $i++) { $current = $name[$i]; if ($i === 0 && !ctype_alpha($current)) { $this->getErrorManager()->ariseFatal('Name should start with alphabetic characters. Given name '.$name.' starts with: '.$current); } if (!in_array(strtolower($current), $this->allowedChars, true)) { $this->getErrorManager()->ariseFatal('Unexpected character '.$current.' in name '.$name.'.'); } } } public function __construct(IErrorManager $errorManager) { parent::__construct($errorManager); // Yes, I hate that everything is allowed as name in php. $this->allowedChars = str_split('abcdefghijklmnopqrstuvwxyz0123456789'); } } class Parser extends CompilerElement implements IParser { private $lexer; private $nameValidator; private $keywords = array(); public function setKeywords(array $keywords) { $this->keywords = $keywords; } public function parse($input) { if (!is_string($input)) { $this->getErrorManager()->ariseFatal(get_class($this).'::parse expects parameter 1 to be string. '.gettype($input).' given.'); } $input = $this->cleanUp($input); $errorManager = $this->getErrorManager(); $allTokens = $this->lexer->tokenize($input); $result = array(); $currentResult = null; $processingBody = false; foreach ($allTokens as $tokens) { foreach ($tokens as $token => $tokenValue) { switch ($token) { case 'type': if ($currentResult !== null || !isset($this->keywords[$tokenValue])) { $errorManager->ariseFatal('Syntax error. Unexpected '.$tokenValue); } $currentResult = new ParseResult($this->keywords[$tokenValue], $errorManager); break; case 'name': if ($currentResult === null) { $errorManager->ariseFatal('Syntax error. Unexpected '.$tokenValue); } $this->nameValidator->validate($tokenValue); $currentResult->setName($tokenValue); break; case 'start_body': if ($currentResult === null || $currentResult->getName() === null) { $errorManager->ariseFatal('Syntax error. Unexpected '.$tokenValue); } $processingBody = true; break; case 'end_body': if ($currentResult === null || $currentResult->getName() === null || $processingBody === false) { $errorManager->ariseFatal('Syntax error. Unexpected '.$tokenValue); } $result[] = $currentResult; $currentResult = null; $processingBody = false; break; default: if ($processingBody === true && $currentResult !== null) { $name = ltrim($token, 'e_'); $this->nameValidator->validate($name); if ($tokenValue === null) { $constants = $currentResult->getConstants(); $last = end($constants); $value = ($last !== false) ? $last + 1 : 0; } else { $value = $tokenValue; } $currentResult->setItem($name, $value); } else { $errorManager->ariseFatal('Syntax error. Unexpected '.$tokenValue); } break; } } } return $result; } private function cleanUp($input) { return trim($input); } public function __construct(ILexer $lexer, INameValidator $nameValidator, IErrorManager $errorManager) { parent::__construct($errorManager); $this->lexer = $lexer; $this->nameValidator = $nameValidator; } } class ParseResult extends CompilerElement implements IParseResult { private $definition; private $name; private $constants = array(); public function getDefinition() { return $this->definition; } public function getName() { return $this->name; } public function getConstants() { return $this->constants; } public function setItem($name, $value) { if (!is_string($name)) { $this->getErrorManager()->ariseFatal('Enumeration item name can only be string.'); } if (!is_numeric($value)) { $this->getErrorManager()->ariseFatal('Enumeration item can only hold numeric value.'); } $this->constants[$name] = (ctype_digit($value) === true) ? (int)$value : (double)$value; } public function setName($name) { if (!is_string($name)) { $this->getErrorManager()->ariseFatal(get_class($this).'::setName expects parameter 1 to be string. '.gettype($name).' given.'); } $this->name = $name; } public function __construct($definition, IErrorManager $errorManager) { parent::__construct($errorManager); if (!is_string($definition)) { $this->getErrorManager()->ariseFatal(get_class($this).'::__construct expects parameter 1 to be string. '.gettype($definition).' given.'); } $this->definition = $definition; } } abstract class CompilerElement { private $errorManager; protected function getErrorManager() { return $this->errorManager; } protected function __construct(IErrorManager $errorManager) { $this->errorManager = $errorManager; } } class Enum2PhpCompiler implements ICompiler { const INDENTATION_CHAR = "\t"; private $parser; public function compile($input) { $parseResult = $this->parser->parse($input); $return = ''; foreach ($parseResult as $result) { $return .= $this->generateClass($result); } return $return; } private function generateClass(IParseResult $parseResult) { $return = $parseResult->getDefinition().' '.$parseResult->getName().' {'.PHP_EOL; foreach ($parseResult->getConstants() as $name => $value) { $return .= Enum2PhpCompiler::INDENTATION_CHAR.'const '.$name.' = '.$value.';'.PHP_EOL; } $return .= Enum2PhpCompiler::INDENTATION_CHAR.'private function __construct() {}'.PHP_EOL; $return .= '}'.PHP_EOL; return $return; } public function __construct(IParser $parser) { $this->parser = $parser; $this->parser->setKeywords(array('enum' => 'final class')); } } class ErrorManager implements IErrorManager { public function ariseFatal($message) { $this->triggerError($message, E_USER_ERROR); } public function ariseWarning($message) { $this->triggerError($message, E_USER_WARNING); } public function ariseNotice($message) { $this->triggerError($message, E_USER_NOTICE); } private function triggerError($message, $type) { trigger_error((string)$message, (int)$type); } } $errorManager = ErrorManager(); $nameValidator = NameValidator($errorManager); $lexer = new Lexer($errorManager); $parser = new Parser($lexer, $nameValidator, $errorManager); $compiler = new Enum2PhpCompiler($parser); $enum = <<<PHP enum MyEnum { Item1 = 1, Item2 = 5, Item3 } enum AnotherEnum { Item } PHP; eval($compiler->compile($enum)); var_dump(MyEnum::Item1, MyEnum::Item2, MyEnum::Item3, AnotherEnum::Item);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.3.6	0.009	0.009	16.63
8.3.5	0.009	0.009	21.92
8.3.4	0.012	0.003	18.92
8.3.3	0.017	0.003	19.20
8.3.2	0.004	0.004	20.34
8.3.1	0.000	0.008	23.48
8.3.0	0.008	0.000	20.84
8.2.18	0.010	0.010	16.63
8.2.17	0.007	0.011	22.96
8.2.16	0.007	0.013	20.37
8.2.15	0.003	0.005	24.18
8.2.14	0.000	0.008	24.66
8.2.13	0.009	0.009	26.16
8.2.12	0.004	0.004	22.08
8.2.11	0.007	0.003	22.30
8.2.10	0.004	0.008	18.03
8.2.9	0.003	0.005	19.17
8.2.8	0.005	0.003	18.05
8.2.7	0.004	0.008	17.63
8.2.6	0.006	0.003	18.05
8.2.5	0.003	0.006	18.07
8.2.4	0.004	0.004	18.34
8.2.3	0.004	0.004	18.09
8.2.2	0.004	0.004	17.92
8.2.1	0.005	0.003	17.77
8.2.0	0.000	0.008	17.77
8.1.28	0.022	0.000	25.92
8.1.27	0.009	0.000	23.76
8.1.26	0.004	0.004	26.35
8.1.25	0.000	0.009	28.09
8.1.24	0.006	0.003	23.66
8.1.23	0.007	0.007	19.20
8.1.22	0.005	0.003	17.79
8.1.21	0.005	0.003	18.77
8.1.20	0.007	0.003	17.35
8.1.19	0.003	0.006	17.66
8.1.18	0.004	0.004	18.10
8.1.17	0.003	0.007	18.77
8.1.16	0.005	0.002	22.16
8.1.15	0.008	0.000	18.60
8.1.14	0.004	0.004	17.48
8.1.13	0.000	0.007	17.92
8.1.12	0.000	0.007	17.52
8.1.11	0.003	0.005	17.48
8.1.10	0.000	0.008	17.55
8.1.9	0.008	0.003	17.52
8.1.8	0.000	0.008	17.51
8.1.7	0.000	0.007	17.52
8.1.6	0.009	0.000	17.58
8.1.5	0.000	0.009	17.57
8.1.4	0.000	0.009	17.62
8.1.3	0.008	0.000	17.67
8.1.2	0.003	0.005	17.67
8.1.1	0.004	0.004	17.65
8.1.0	0.003	0.006	17.49
8.0.30	0.008	0.000	18.77
8.0.29	0.009	0.000	17.05
8.0.28	0.004	0.004	18.60
8.0.27	0.007	0.000	17.30
8.0.26	0.003	0.003	17.03
8.0.25	0.007	0.000	17.21
8.0.24	0.004	0.004	17.13
8.0.23	0.000	0.007	17.17
8.0.22	0.004	0.004	17.09
8.0.21	0.000	0.007	17.15
8.0.20	0.003	0.005	17.19
8.0.19	0.009	0.000	17.10
8.0.18	0.004	0.004	17.16
8.0.17	0.003	0.005	17.21
8.0.16	0.003	0.005	17.07
8.0.15	0.004	0.007	16.95
8.0.14	0.003	0.006	16.96
8.0.13	0.000	0.009	13.61
8.0.12	0.004	0.004	16.99
8.0.11	0.004	0.004	17.00
8.0.10	0.008	0.000	17.05
8.0.9	0.004	0.004	17.14
8.0.8	0.015	0.005	17.05
8.0.7	0.000	0.008	17.09
8.0.6	0.005	0.003	16.96
8.0.5	0.000	0.008	17.00
8.0.3	0.008	0.011	17.38
8.0.2	0.010	0.009	17.40
8.0.1	0.000	0.008	17.22
8.0.0	0.009	0.010	16.84
7.4.33	0.005	0.000	15.00
7.4.32	0.000	0.007	16.63
7.4.30	0.004	0.004	16.68
7.4.29	0.007	0.000	16.50
7.4.28	0.000	0.008	16.60
7.4.27	0.000	0.007	16.53
7.4.26	0.004	0.004	16.48
7.4.25	0.004	0.004	16.46
7.4.24	0.004	0.004	16.57
7.4.23	0.004	0.004	16.71
7.4.22	0.010	0.010	16.54
7.4.21	0.003	0.012	16.71
7.4.20	0.008	0.000	16.71
7.4.19	0.003	0.005	16.55
7.4.16	0.009	0.009	16.52
7.4.15	0.020	0.000	17.40
7.4.14	0.005	0.012	17.86
7.4.13	0.009	0.011	16.66
7.4.12	0.008	0.013	16.51
7.4.11	0.012	0.009	16.77
7.4.10	0.011	0.007	16.66
7.4.9	0.019	0.003	16.63
7.4.8	0.016	0.008	19.39
7.4.7	0.010	0.007	16.63
7.4.6	0.011	0.007	16.51
7.4.5	0.000	0.005	16.59
7.4.4	0.003	0.009	22.77
7.4.3	0.010	0.007	16.64
7.4.0	0.017	0.000	15.35
7.3.33	0.000	0.006	13.24
7.3.32	0.003	0.003	13.31
7.3.31	0.004	0.004	16.35
7.3.30	0.003	0.005	16.34
7.3.29	0.009	0.006	16.42
7.3.28	0.008	0.012	16.48
7.3.27	0.011	0.007	17.40
7.3.26	0.012	0.012	16.54
7.3.25	0.009	0.009	16.54
7.3.24	0.010	0.010	16.75
7.3.23	0.010	0.007	16.67
7.3.21	0.009	0.017	16.43
7.3.20	0.015	0.004	19.39
7.3.19	0.012	0.012	16.59
7.3.18	0.006	0.010	16.63
7.3.17	0.011	0.006	16.57
7.3.16	0.010	0.007	16.54
7.3.12	0.007	0.007	14.82
7.3.1	0.010	0.007	16.69
7.3.0	0.006	0.008	16.69
7.2.33	0.003	0.015	16.60
7.2.32	0.011	0.006	16.82
7.2.31	0.010	0.013	16.60
7.2.30	0.014	0.007	16.73
7.2.29	0.010	0.007	16.59
7.2.13	0.000	0.010	16.57
7.2.12	0.007	0.010	16.83
7.2.11	0.000	0.014	16.89
7.2.10	0.004	0.007	16.52
7.2.9	0.008	0.004	16.98
7.2.8	0.000	0.014	16.70
7.2.7	0.008	0.004	16.71
7.2.6	0.006	0.009	16.83
7.2.5	0.006	0.009	16.73
7.2.4	0.003	0.013	16.84
7.2.3	0.009	0.003	16.87
7.2.2	0.004	0.011	16.47
7.2.1	0.000	0.015	16.59
7.2.0	0.007	0.007	17.78
7.1.25	0.003	0.007	15.51
7.1.20	0.000	0.013	15.50
7.1.10	0.007	0.003	18.22
7.1.7	0.011	0.000	16.84
7.1.6	0.010	0.014	19.29
7.1.5	0.007	0.011	16.88
7.1.0	0.003	0.077	22.45
7.0.20	0.006	0.009	16.43
7.0.14	0.003	0.077	22.09
7.0.10	0.003	0.077	19.98
7.0.9	0.007	0.077	20.22
7.0.8	0.007	0.080	20.10
7.0.7	0.013	0.083	19.98
7.0.6	0.027	0.073	20.01
7.0.5	0.010	0.077	20.21
7.0.4	0.010	0.067	19.91
7.0.3	0.013	0.080	20.08
7.0.2	0.017	0.043	20.07
7.0.1	0.010	0.070	20.18
7.0.0	0.010	0.077	20.03
5.6.28	0.010	0.070	20.97
5.6.25	0.003	0.077	20.88
5.6.24	0.007	0.037	20.74
5.6.23	0.003	0.063	20.63
5.6.22	0.003	0.080	20.55
5.6.21	0.010	0.083	20.63
5.6.20	0.017	0.073	21.17
5.6.19	0.010	0.057	21.09
5.6.18	0.010	0.080	21.00
5.6.17	0.013	0.077	21.19
5.6.16	0.017	0.070	21.20
5.6.15	0.010	0.083	21.02
5.6.14	0.013	0.073	21.16
5.6.13	0.007	0.087	21.09
5.6.12	0.013	0.080	21.13
5.6.11	0.013	0.083	21.02
5.6.10	0.010	0.080	21.14
5.6.9	0.007	0.073	21.11
5.6.8	0.007	0.060	20.50
5.6.7	0.000	0.047	20.46
5.6.6	0.000	0.093	20.46
5.6.5	0.017	0.063	20.53
5.6.4	0.010	0.083	20.38
5.6.3	0.013	0.063	20.46
5.6.2	0.007	0.080	20.45
5.6.1	0.020	0.067	20.45
5.6.0	0.020	0.067	20.54
5.5.38	0.017	0.070	20.41
5.5.37	0.010	0.083	20.47
5.5.36	0.003	0.083	20.46
5.5.35	0.010	0.060	20.41
5.5.34	0.010	0.083	20.93
5.5.33	0.007	0.080	20.89
5.5.32	0.017	0.073	20.84
5.5.31	0.007	0.083	20.84
5.5.30	0.010	0.077	20.86
5.5.29	0.003	0.093	20.89
5.5.28	0.010	0.087	20.93
5.5.27	0.010	0.087	20.81
5.5.26	0.010	0.073	20.91
5.5.25	0.010	0.047	20.77
5.5.24	0.007	0.057	20.32
5.5.23	0.010	0.080	20.07
5.5.22	0.007	0.083	20.19
5.5.21	0.013	0.073	20.25
5.5.20	0.017	0.060	20.30
5.5.19	0.007	0.080	20.30
5.5.18	0.010	0.077	20.25
5.5.16	0.013	0.077	20.21
5.5.15	0.003	0.077	20.33
5.5.14	0.007	0.077	20.27
5.5.13	0.007	0.073	20.21
5.5.12	0.010	0.070	20.29
5.5.11	0.003	0.040	20.24
5.5.10	0.000	0.083	20.23
5.5.9	0.013	0.060	20.13
5.5.8	0.010	0.050	20.10
5.5.7	0.003	0.083	20.12
5.5.6	0.020	0.053	20.21
5.5.5	0.007	0.077	20.14
5.5.4	0.013	0.070	20.11
5.5.3	0.013	0.070	20.07
5.5.2	0.007	0.067	20.16
5.5.1	0.000	0.053	20.02
5.5.0	0.013	0.047	20.10
5.4.45	0.010	0.077	19.56
5.4.44	0.017	0.077	19.39
5.4.43	0.010	0.073	19.39
5.4.42	0.007	0.080	19.48
5.4.41	0.020	0.063	19.45
5.4.40	0.007	0.063	19.17
5.4.39	0.010	0.070	18.90
5.4.38	0.013	0.050	19.08
5.4.37	0.007	0.077	18.90
5.4.36	0.013	0.067	18.93
5.4.35	0.007	0.083	19.04
5.4.34	0.003	0.087	19.09
5.4.32	0.013	0.040	19.08
5.4.31	0.013	0.070	18.93
5.4.30	0.007	0.077	18.93
5.4.29	0.003	0.070	19.08
5.4.28	0.007	0.040	19.09
5.4.27	0.003	0.070	19.22
5.4.26	0.000	0.060	18.99
5.4.25	0.010	0.050	19.15
5.4.24	0.013	0.053	19.09
5.4.23	0.010	0.070	19.21
5.4.22	0.007	0.077	19.07
5.4.21	0.003	0.083	19.04
5.4.20	0.013	0.067	19.22
5.4.19	0.003	0.077	19.10
5.4.18	0.017	0.067	19.06
5.4.17	0.013	0.067	19.22
5.4.16	0.013	0.070	18.92
5.4.15	0.007	0.080	19.14
5.4.14	0.007	0.077	16.45
5.4.13	0.010	0.073	16.48
5.4.12	0.003	0.073	16.34
5.4.11	0.010	0.073	16.45
5.4.10	0.003	0.077	16.41
5.4.9	0.007	0.073	16.62
5.4.8	0.003	0.077	16.50
5.4.7	0.003	0.077	16.43
5.4.6	0.007	0.073	16.52
5.4.5	0.000	0.077	16.56
5.4.4	0.000	0.063	16.40
5.4.3	0.013	0.070	16.41
5.4.2	0.003	0.073	16.45
5.4.1	0.007	0.073	16.54
5.4.0	0.003	0.073	15.89
5.3.29	0.000	0.080	14.75
5.3.28	0.003	0.077	14.81
5.3.27	0.003	0.073	14.89
5.3.26	0.000	0.087	14.80
5.3.25	0.007	0.077	14.78
5.3.24	0.003	0.073	14.76
5.3.23	0.007	0.073	14.80
5.3.22	0.007	0.070	14.85
5.3.21	0.003	0.080	14.84
5.3.20	0.003	0.077	14.82
5.3.19	0.003	0.083	14.78
5.3.18	0.010	0.073	14.69
5.3.17	0.000	0.077	14.76
5.3.16	0.007	0.073	14.84
5.3.15	0.000	0.077	14.85
5.3.14	0.013	0.067	14.77
5.3.13	0.000	0.070	14.76
5.3.12	0.007	0.077	14.82
5.3.11	0.003	0.067	14.71
5.3.10	0.007	0.067	14.19
5.3.9	0.010	0.053	14.10
5.3.8	0.007	0.067	14.20
5.3.7	0.003	0.077	14.29
5.3.6	0.007	0.070	14.29
5.3.5	0.013	0.073	14.02
5.3.4	0.007	0.073	14.17
5.3.3	0.010	0.067	13.95
5.3.2	0.007	0.070	13.85
5.3.1	0.003	0.077	13.89
5.3.0	0.007	0.077	13.88