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paulgoughbooks_old / trunk / system / ThirdParty / Kint / CallFinder.php
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<?php /* * The MIT License (MIT) * * Copyright (c) 2013 Jonathan Vollebregt (jnvsor@gmail.com), Rokas Šleinius (raveren@gmail.com) * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ namespace Kint; class CallFinder { private static $ignore = array( T_CLOSE_TAG => true, T_COMMENT => true, T_DOC_COMMENT => true, T_INLINE_HTML => true, T_OPEN_TAG => true, T_OPEN_TAG_WITH_ECHO => true, T_WHITESPACE => true, ); /** * Things we need to do specially for operator tokens: * - Refuse to strip spaces around them * - Wrap the access path in parentheses if there * are any of these in the final short parameter. */ private static $operator = array( T_AND_EQUAL => true, T_BOOLEAN_AND => true, T_BOOLEAN_OR => true, T_ARRAY_CAST => true, T_BOOL_CAST => true, T_CLONE => true, T_CONCAT_EQUAL => true, T_DEC => true, T_DIV_EQUAL => true, T_DOUBLE_CAST => true, T_INC => true, T_INCLUDE => true, T_INCLUDE_ONCE => true, T_INSTANCEOF => true, T_INT_CAST => true, T_IS_EQUAL => true, T_IS_GREATER_OR_EQUAL => true, T_IS_IDENTICAL => true, T_IS_NOT_EQUAL => true, T_IS_NOT_IDENTICAL => true, T_IS_SMALLER_OR_EQUAL => true, T_LOGICAL_AND => true, T_LOGICAL_OR => true, T_LOGICAL_XOR => true, T_MINUS_EQUAL => true, T_MOD_EQUAL => true, T_MUL_EQUAL => true, T_NEW => true, T_OBJECT_CAST => true, T_OR_EQUAL => true, T_PLUS_EQUAL => true, T_REQUIRE => true, T_REQUIRE_ONCE => true, T_SL => true, T_SL_EQUAL => true, T_SR => true, T_SR_EQUAL => true, T_STRING_CAST => true, T_UNSET_CAST => true, T_XOR_EQUAL => true, '!' => true, '%' => true, '&' => true, '*' => true, '+' => true, '-' => true, '.' => true, '/' => true, ':' => true, '<' => true, '=' => true, '>' => true, '?' => true, '^' => true, '|' => true, '~' => true, ); private static $strip = array( '(' => true, ')' => true, '[' => true, ']' => true, '{' => true, '}' => true, T_OBJECT_OPERATOR => true, T_DOUBLE_COLON => true, T_NS_SEPARATOR => true, ); public static function getFunctionCalls($source, $line, $function) { static $up = array( '(' => true, '[' => true, '{' => true, T_CURLY_OPEN => true, T_DOLLAR_OPEN_CURLY_BRACES => true, ); static $down = array( ')' => true, ']' => true, '}' => true, ); static $modifiers = array( '!' => true, '@' => true, '~' => true, '+' => true, '-' => true, ); static $identifier = array( T_DOUBLE_COLON => true, T_STRING => true, T_NS_SEPARATOR => true, ); if (KINT_PHP56) { self::$operator[T_POW] = true; self::$operator[T_POW_EQUAL] = true; } if (KINT_PHP70) { self::$operator[T_SPACESHIP] = true; } if (KINT_PHP74) { self::$operator[T_COALESCE_EQUAL] = true; } $tokens = \token_get_all($source); $cursor = 1; $function_calls = array(); /** @var array<int, null|array|string> Performance optimization preventing backwards loops */ $prev_tokens = array(null, null, null); if (\is_array($function)) { $class = \explode('\\', $function[0]); $class = \strtolower(\end($class)); $function = \strtolower($function[1]); } else { $class = null; $function = \strtolower($function); } // Loop through tokens foreach ($tokens as $index => $token) { if (!\is_array($token)) { continue; } // Count newlines for line number instead of using $token[2] // since certain situations (String tokens after whitespace) may // not have the correct line number unless you do this manually $cursor += \substr_count($token[1], "\n"); if ($cursor > $line) { break; } // Store the last real tokens for later if (isset(self::$ignore[$token[0]])) { continue; } $prev_tokens = array($prev_tokens[1], $prev_tokens[2], $token); // Check if it's the right type to be the function we're looking for if (T_STRING !== $token[0] || \strtolower($token[1]) !== $function) { continue; } // Check if it's a function call $nextReal = self::realTokenIndex($tokens, $index); if (!isset($nextReal, $tokens[$nextReal]) || '(' !== $tokens[$nextReal]) { continue; } // Check if it matches the signature if (null === $class) { if ($prev_tokens[1] && \in_array($prev_tokens[1][0], array(T_DOUBLE_COLON, T_OBJECT_OPERATOR), true)) { continue; } } else { if (!$prev_tokens[1] || T_DOUBLE_COLON !== $prev_tokens[1][0]) { continue; } if (!$prev_tokens[0] || T_STRING !== $prev_tokens[0][0] || \strtolower($prev_tokens[0][1]) !== $class) { continue; } } $inner_cursor = $cursor; $depth = 1; // The depth respective to the function call $offset = $nextReal + 1; // The start of the function call $instring = false; // Whether we're in a string or not $realtokens = false; // Whether the current scope contains anything meaningful or not $paramrealtokens = false; // Whether the current parameter contains anything meaningful $params = array(); // All our collected parameters $shortparam = array(); // The short version of the parameter $param_start = $offset; // The distance to the start of the parameter // Loop through the following tokens until the function call ends while (isset($tokens[$offset])) { $token = $tokens[$offset]; // Ensure that the $inner_cursor is correct and // that $token is either a T_ constant or a string if (\is_array($token)) { $inner_cursor += \substr_count($token[1], "\n"); } if (!isset(self::$ignore[$token[0]]) && !isset($down[$token[0]])) { $paramrealtokens = $realtokens = true; } // If it's a token that makes us to up a level, increase the depth if (isset($up[$token[0]])) { if (1 === $depth) { $shortparam[] = $token; $realtokens = false; } ++$depth; } elseif (isset($down[$token[0]])) { --$depth; // If this brings us down to the parameter level, and we've had // real tokens since going up, fill the $shortparam with an ellipsis if (1 === $depth) { if ($realtokens) { $shortparam[] = '...'; } $shortparam[] = $token; } } elseif ('"' === $token[0]) { // Strings use the same symbol for up and down, but we can // only ever be inside one string, so just use a bool for that if ($instring) { --$depth; if (1 === $depth) { $shortparam[] = '...'; } } else { ++$depth; } $instring = !$instring; $shortparam[] = '"'; } elseif (1 === $depth) { if (',' === $token[0]) { $params[] = array( 'full' => \array_slice($tokens, $param_start, $offset - $param_start), 'short' => $shortparam, ); $shortparam = array(); $paramrealtokens = false; $param_start = $offset + 1; } elseif (T_CONSTANT_ENCAPSED_STRING === $token[0] && \strlen($token[1]) > 2) { $shortparam[] = $token[1][0].'...'.$token[1][0]; } else { $shortparam[] = $token; } } // Depth has dropped to 0 (So we've hit the closing paren) if ($depth <= 0) { if ($paramrealtokens) { $params[] = array( 'full' => \array_slice($tokens, $param_start, $offset - $param_start), 'short' => $shortparam, ); } break; } ++$offset; } // If we're not passed (or at) the line at the end // of the function call, we're too early so skip it if ($inner_cursor < $line) { continue; } // Format the final output parameters foreach ($params as &$param) { $name = self::tokensFormatted($param['short']); $expression = false; foreach ($name as $token) { if (self::tokenIsOperator($token)) { $expression = true; break; } } $param = array( 'name' => self::tokensToString($name), 'path' => self::tokensToString(self::tokensTrim($param['full'])), 'expression' => $expression, ); } // Get the modifiers --$index; while (isset($tokens[$index])) { if (!isset(self::$ignore[$tokens[$index][0]]) && !isset($identifier[$tokens[$index][0]])) { break; } --$index; } $mods = array(); while (isset($tokens[$index])) { if (isset(self::$ignore[$tokens[$index][0]])) { --$index; continue; } if (isset($modifiers[$tokens[$index][0]])) { $mods[] = $tokens[$index]; --$index; continue; } break; } $function_calls[] = array( 'parameters' => $params, 'modifiers' => $mods, ); } return $function_calls; } private static function realTokenIndex(array $tokens, $index) { ++$index; while (isset($tokens[$index])) { if (!isset(self::$ignore[$tokens[$index][0]])) { return $index; } ++$index; } return null; } /** * We need a separate method to check if tokens are operators because we * occasionally add "..." to short parameter versions. If we simply check * for `$token[0]` then "..." will incorrectly match the "." operator. * * @param array|string $token The token to check * * @return bool */ private static function tokenIsOperator($token) { return '...' !== $token && isset(self::$operator[$token[0]]); } private static function tokensToString(array $tokens) { $out = ''; foreach ($tokens as $token) { if (\is_string($token)) { $out .= $token; } elseif (\is_array($token)) { $out .= $token[1]; } } return $out; } private static function tokensTrim(array $tokens) { foreach ($tokens as $index => $token) { if (isset(self::$ignore[$token[0]])) { unset($tokens[$index]); } else { break; } } $tokens = \array_reverse($tokens); foreach ($tokens as $index => $token) { if (isset(self::$ignore[$token[0]])) { unset($tokens[$index]); } else { break; } } return \array_reverse($tokens); } private static function tokensFormatted(array $tokens) { $space = false; $tokens = self::tokensTrim($tokens); $output = array(); $last = null; foreach ($tokens as $index => $token) { if (isset(self::$ignore[$token[0]])) { if ($space) { continue; } $next = $tokens[self::realTokenIndex($tokens, $index)]; if (isset(self::$strip[$last[0]]) && !self::tokenIsOperator($next)) { continue; } if (isset(self::$strip[$next[0]]) && $last && !self::tokenIsOperator($last)) { continue; } $token = ' '; $space = true; } else { $space = false; $last = $token; } $output[] = $token; } return $output; } } |
Commits for paulgoughbooks_old/trunk/system/ThirdParty/Kint/CallFinder.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Tue 03 Nov, 2020 08:50:21 +0000 | Migration of Paul Goughs Books site to Codeignitor 4 |