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aurelien |
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<?php
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/**
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* Tokenizes PHP code.
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*
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* PHP version 5
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*
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* @category PHP
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* @package PHP_CodeSniffer
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
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* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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* @version CVS: $Id: PHP.php,v 1.6 2009/01/20 23:55:15 squiz Exp $
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* @link http://pear.php.net/package/PHP_CodeSniffer
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*/
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/**
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* Tokenizes PHP code.
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*
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* @category PHP
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* @package PHP_CodeSniffer
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
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* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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* @version Release: 1.2.0RC1
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* @link http://pear.php.net/package/PHP_CodeSniffer
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*/
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class PHP_CodeSniffer_Tokenizers_PHP
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{
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/**
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* A list of tokens that are allowed to open a scope.
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*
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* This array also contains information about what kind of token the scope
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* opener uses to open and close the scope, if the token strictly requires
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* an opener, if the token can share a scope closer, and who it can be shared
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* with. An example of a token that shares a scope closer is a CASE scope.
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*
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* @var array
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*/
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public $scopeOpeners = array(
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T_IF => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_TRY => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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T_CATCH => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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T_ELSE => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_ELSEIF => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_FOR => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_FOREACH => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_INTERFACE => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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T_FUNCTION => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_CLASS => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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T_WHILE => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => false,
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'shared' => false,
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'with' => array(),
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),
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T_DO => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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T_SWITCH => array(
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'start' => T_OPEN_CURLY_BRACKET,
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'end' => T_CLOSE_CURLY_BRACKET,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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T_CASE => array(
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'start' => T_COLON,
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'end' => T_BREAK,
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'strict' => true,
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'shared' => true,
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'with' => array(
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T_DEFAULT,
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T_CASE,
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T_SWITCH,
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),
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),
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T_DEFAULT => array(
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'start' => T_COLON,
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'end' => T_BREAK,
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'strict' => true,
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'shared' => true,
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'with' => array(
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T_CASE,
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T_SWITCH,
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),
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),
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T_START_HEREDOC => array(
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'start' => T_START_HEREDOC,
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'end' => T_END_HEREDOC,
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'strict' => true,
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'shared' => false,
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'with' => array(),
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),
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);
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/**
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* A list of tokens that end the scope.
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*
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* This array is just a unique collection of the end tokens
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* from the _scopeOpeners array. The data is duplicated here to
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* save time during parsing of the file.
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*
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* @var array
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*/
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public $endScopeTokens = array(
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T_CLOSE_CURLY_BRACKET,
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T_BREAK,
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T_END_HEREDOC,
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);
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/**
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* Creates an array of tokens when given some PHP code.
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*
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* Starts by using token_get_all() but does a lot of extra processing
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* to insert information about the context of the token.
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*
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* @param string $string The string to tokenize.
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* @param string $eolChar The EOL character to use for splitting strings.
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*
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* @return array
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*/
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public function tokenizeString($string, $eolChar='\n')
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{
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$tokens = @token_get_all($string);
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$finalTokens = array();
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$newStackPtr = 0;
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$numTokens = count($tokens);
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for ($stackPtr = 0; $stackPtr < $numTokens; $stackPtr++) {
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$token = $tokens[$stackPtr];
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$tokenIsArray = is_array($token);
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/*
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If we are using \r\n newline characters, the \r and \n are sometimes
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split over two tokens. This normally occurs after comments. We need
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to merge these two characters together so that our line endings are
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consistent for all lines.
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*/
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if ($tokenIsArray === true && substr($token[1], -1) === "\r") {
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if (isset($tokens[($stackPtr + 1)]) === true
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&& is_array($tokens[($stackPtr + 1)]) === true
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&& $tokens[($stackPtr + 1)][1][0] === "\n"
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) {
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$token[1] .= "\n";
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if ($tokens[($stackPtr + 1)][1] === "\n") {
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// The next token's content has been merged into this token,
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// so we can skip it.
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$stackPtr++;
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} else {
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$tokens[($stackPtr + 1)][1]
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= substr($tokens[($stackPtr + 1)][1], 1);
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}
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}
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}//end if
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/*
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If this is a double quoted string, PHP will tokenise the whole
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thing which causes problems with the scope map when braces are
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within the string. So we need to merge the tokens together to
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provide a single string.
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*/
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if ($tokenIsArray === false && $token === '"') {
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$tokenContent = '"';
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$nestedVars = array();
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for ($i = ($stackPtr + 1); $i < $numTokens; $i++) {
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$subTokenIsArray = is_array($tokens[$i]);
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if ($subTokenIsArray === true) {
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$tokenContent .= $tokens[$i][1];
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if ($tokens[$i][1] === '{'
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&& $tokens[$i][0] !== T_ENCAPSED_AND_WHITESPACE
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) {
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$nestedVars[] = $i;
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}
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} else {
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$tokenContent .= $tokens[$i];
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if ($tokens[$i] === '}') {
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array_pop($nestedVars);
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}
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}
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if ($subTokenIsArray === false
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&& $tokens[$i] === '"'
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&& empty($nestedVars) === true
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) {
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// We found the other end of the double quoted string.
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break;
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}
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}
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$stackPtr = $i;
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// Convert each line within the double quoted string to a
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// new token, so it conforms with other multiple line tokens.
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$tokenLines = explode($eolChar, $tokenContent);
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$numLines = count($tokenLines);
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$newToken = array();
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for ($j = 0; $j < $numLines; $j++) {
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$newToken['content'] = $tokenLines[$j];
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if ($j === ($numLines - 1)) {
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if ($tokenLines[$j] === '') {
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break;
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}
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} else {
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$newToken['content'] .= $eolChar;
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}
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$newToken['code'] = T_DOUBLE_QUOTED_STRING;
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$newToken['type'] = 'T_DOUBLE_QUOTED_STRING';
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$finalTokens[$newStackPtr] = $newToken;
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$newStackPtr++;
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}
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// Continue, as we're done with this token.
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continue;
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}//end if
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/*
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If this is a heredoc, PHP will tokenise the whole
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thing which causes problems when heredocs don't
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contain real PHP code, which is almost never.
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We want to leave the start and end heredoc tokens
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alone though.
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*/
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if ($tokenIsArray === true && $token[0] === T_START_HEREDOC) {
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// Add the start heredoc token to the final array.
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$finalTokens[$newStackPtr]
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= PHP_CodeSniffer::standardiseToken($token);
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$newStackPtr++;
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$tokenContent = '';
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for ($i = ($stackPtr + 1); $i < $numTokens; $i++) {
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$subTokenIsArray = is_array($tokens[$i]);
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if ($subTokenIsArray === true
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&& $tokens[$i][0] === T_END_HEREDOC
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) {
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// We found the other end of the heredoc.
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break;
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}
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if ($subTokenIsArray === true) {
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$tokenContent .= $tokens[$i][1];
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} else {
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$tokenContent .= $tokens[$i];
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}
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318 |
}
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319 |
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320 |
$stackPtr = $i;
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322 |
// Convert each line within the heredoc to a
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// new token, so it conforms with other multiple line tokens.
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324 |
$tokenLines = explode($eolChar, $tokenContent);
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325 |
$numLines = count($tokenLines);
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$newToken = array();
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327 |
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328 |
for ($j = 0; $j < $numLines; $j++) {
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$newToken['content'] = $tokenLines[$j];
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330 |
if ($j === ($numLines - 1)) {
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if ($tokenLines[$j] === '') {
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break;
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}
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334 |
} else {
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$newToken['content'] .= $eolChar;
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}
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$newToken['code'] = T_HEREDOC;
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$newToken['type'] = 'T_HEREDOC';
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$finalTokens[$newStackPtr] = $newToken;
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$newStackPtr++;
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}
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343 |
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344 |
// Add the end heredoc token to the final array.
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$finalTokens[$newStackPtr]
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= PHP_CodeSniffer::standardiseToken($tokens[$stackPtr]);
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$newStackPtr++;
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// Continue, as we're done with this token.
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continue;
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351 |
}//end if
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352 |
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/*
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354 |
If this token has newlines in its content, split each line up
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355 |
and create a new token for each line. We do this so it's easier
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356 |
to asertain where errors occur on a line.
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357 |
Note that $token[1] is the token's content.
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358 |
*/
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359 |
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360 |
if ($tokenIsArray === true && strpos($token[1], $eolChar) !== false) {
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361 |
$tokenLines = explode($eolChar, $token[1]);
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|
|
362 |
$numLines = count($tokenLines);
|
|
|
363 |
$tokenName = token_name($token[0]);
|
|
|
364 |
|
|
|
365 |
for ($i = 0; $i < $numLines; $i++) {
|
|
|
366 |
$newToken['content'] = $tokenLines[$i];
|
|
|
367 |
if ($i === ($numLines - 1)) {
|
|
|
368 |
if ($tokenLines[$i] === '') {
|
|
|
369 |
break;
|
|
|
370 |
}
|
|
|
371 |
} else {
|
|
|
372 |
$newToken['content'] .= $eolChar;
|
|
|
373 |
}
|
|
|
374 |
|
|
|
375 |
$newToken['type'] = $tokenName;
|
|
|
376 |
$newToken['code'] = $token[0];
|
|
|
377 |
$finalTokens[$newStackPtr] = $newToken;
|
|
|
378 |
$newStackPtr++;
|
|
|
379 |
}
|
|
|
380 |
} else {
|
|
|
381 |
$newToken = PHP_CodeSniffer::standardiseToken($token);
|
|
|
382 |
|
|
|
383 |
// This is a special condition for T_ARRAY tokens use to
|
|
|
384 |
// type hint function arguments as being arrays. We want to keep
|
|
|
385 |
// the parenthsis map clean, so let's tag these tokens as
|
|
|
386 |
// T_ARRAY_HINT.
|
|
|
387 |
if ($newToken['code'] === T_ARRAY) {
|
|
|
388 |
// Recalculate number of tokens.
|
|
|
389 |
$numTokens = count($tokens);
|
|
|
390 |
for ($i = $stackPtr; $i < $numTokens; $i++) {
|
|
|
391 |
if (is_array($tokens[$i]) === false) {
|
|
|
392 |
if ($tokens[$i] === '(') {
|
|
|
393 |
break;
|
|
|
394 |
}
|
|
|
395 |
} else if ($tokens[$i][0] === T_VARIABLE) {
|
|
|
396 |
$newToken['code'] = T_ARRAY_HINT;
|
|
|
397 |
$newToken['type'] = 'T_ARRAY_HINT';
|
|
|
398 |
break;
|
|
|
399 |
}
|
|
|
400 |
}
|
|
|
401 |
}
|
|
|
402 |
|
|
|
403 |
$finalTokens[$newStackPtr] = $newToken;
|
|
|
404 |
$newStackPtr++;
|
|
|
405 |
}//end if
|
|
|
406 |
}//end for
|
|
|
407 |
|
|
|
408 |
return $finalTokens;
|
|
|
409 |
|
|
|
410 |
}//end tokenizeString()
|
|
|
411 |
|
|
|
412 |
|
|
|
413 |
/**
|
|
|
414 |
* Performs additional processing after main tokenizing.
|
|
|
415 |
*
|
|
|
416 |
* @param array &$tokens The array of tokens to process.
|
|
|
417 |
* @param string $eolChar The EOL character to use for splitting strings.
|
|
|
418 |
*
|
|
|
419 |
* @return array
|
|
|
420 |
*/
|
|
|
421 |
public function processAdditional(&$tokens, $eolChar)
|
|
|
422 |
{
|
|
|
423 |
|
|
|
424 |
}//end processAdditional()
|
|
|
425 |
|
|
|
426 |
|
|
|
427 |
}//end class
|
|
|
428 |
|
|
|
429 |
?>
|