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<?php
/**
* Tokenizes JS code.
*
* PHP version 5
*
* @category PHP
* @package PHP_CodeSniffer
* @author Greg Sherwood <gsherwood@squiz.net>
* @author Marc McIntyre <mmcintyre@squiz.net>
* @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
/**
* Tokenizes JS code.
*
* @category PHP
* @package PHP_CodeSniffer
* @author Greg Sherwood <gsherwood@squiz.net>
* @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
* @version Release: 1.3.3
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
class PHP_CodeSniffer_Tokenizers_JS
{
/**
* A list of tokens that are allowed to open a scope.
*
* This array also contains information about what kind of token the scope
* opener uses to open and close the scope, if the token strictly requires
* an opener, if the token can share a scope closer, and who it can be shared
* with. An example of a token that shares a scope closer is a CASE scope.
*
* @var array
*/
public $scopeOpeners = array(
T_IF => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => false,
'shared' => false,
'with' => array(),
),
T_TRY => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => true,
'shared' => false,
'with' => array(),
),
T_CATCH => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => true,
'shared' => false,
'with' => array(),
),
T_ELSE => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => false,
'shared' => false,
'with' => array(),
),
T_FOR => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => false,
'shared' => false,
'with' => array(),
),
T_FUNCTION => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => false,
'shared' => false,
'with' => array(),
),
T_WHILE => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => false,
'shared' => false,
'with' => array(),
),
T_DO => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => true,
'shared' => false,
'with' => array(),
),
T_SWITCH => array(
'start' => array(T_OPEN_CURLY_BRACKET),
'end' => array(T_CLOSE_CURLY_BRACKET),
'strict' => true,
'shared' => false,
'with' => array(),
),
T_CASE => array(
'start' => array(T_COLON),
'end' => array(T_BREAK),
'strict' => true,
'shared' => true,
'with' => array(
T_DEFAULT,
T_CASE,
T_SWITCH,
),
),
T_DEFAULT => array(
'start' => array(T_COLON),
'end' => array(T_BREAK),
'strict' => true,
'shared' => true,
'with' => array(
T_CASE,
T_SWITCH,
),
),
);
/**
* A list of tokens that end the scope.
*
* This array is just a unique collection of the end tokens
* from the _scopeOpeners array. The data is duplicated here to
* save time during parsing of the file.
*
* @var array
*/
public $endScopeTokens = array(
T_CLOSE_CURLY_BRACKET,
T_BREAK,
);
/**
* A list of special JS tokens and their types.
*
* @var array
*/
protected $tokenValues = array(
'function' => 'T_FUNCTION',
'prototype' => 'T_PROTOTYPE',
'try' => 'T_TRY',
'catch' => 'T_CATCH',
'return' => 'T_RETURN',
'break' => 'T_BREAK',
'switch' => 'T_SWITCH',
'continue' => 'T_CONTINUE',
'if' => 'T_IF',
'else' => 'T_ELSE',
'do' => 'T_DO',
'while' => 'T_WHILE',
'for' => 'T_FOR',
'var' => 'T_VAR',
'case' => 'T_CASE',
'default' => 'T_DEFAULT',
'true' => 'T_TRUE',
'false' => 'T_FALSE',
'null' => 'T_NULL',
'this' => 'T_THIS',
'typeof' => 'T_TYPEOF',
'(' => 'T_OPEN_PARENTHESIS',
')' => 'T_CLOSE_PARENTHESIS',
'{' => 'T_OPEN_CURLY_BRACKET',
'}' => 'T_CLOSE_CURLY_BRACKET',
'[' => 'T_OPEN_SQUARE_BRACKET',
']' => 'T_CLOSE_SQUARE_BRACKET',
'?' => 'T_INLINE_THEN',
'.' => 'T_OBJECT_OPERATOR',
'+' => 'T_PLUS',
'-' => 'T_MINUS',
'*' => 'T_MULTIPLY',
'%' => 'T_MODULUS',
'/' => 'T_DIVIDE',
'^' => 'T_POWER',
',' => 'T_COMMA',
';' => 'T_SEMICOLON',
':' => 'T_COLON',
'<' => 'T_LESS_THAN',
'>' => 'T_GREATER_THAN',
'<=' => 'T_IS_SMALLER_OR_EQUAL',
'>=' => 'T_IS_GREATER_OR_EQUAL',
'!' => 'T_BOOLEAN_NOT',
'||' => 'T_BOOLEAN_OR',
'&&' => 'T_BOOLEAN_AND',
'|' => 'T_BITWISE_OR',
'&' => 'T_BITWISE_AND',
'!=' => 'T_IS_NOT_EQUAL',
'!==' => 'T_IS_NOT_IDENTICAL',
'=' => 'T_EQUAL',
'==' => 'T_IS_EQUAL',
'===' => 'T_IS_IDENTICAL',
'-=' => 'T_MINUS_EQUAL',
'+=' => 'T_PLUS_EQUAL',
'*=' => 'T_MUL_EQUAL',
'/=' => 'T_DIV_EQUAL',
'%=' => 'T_MOD_EQUAL',
'++' => 'T_INC',
'--' => 'T_DEC',
'//' => 'T_COMMENT',
'/*' => 'T_COMMENT',
'/**' => 'T_DOC_COMMENT',
'*/' => 'T_COMMENT',
);
/**
* A list string delimiters.
*
* @var array
*/
protected $stringTokens = array(
'\'',
'"',
);
/**
* A list tokens that start and end comments.
*
* @var array
*/
protected $commentTokens = array(
'//' => null,
'/*' => '*/',
'/**' => '*/',
);
/**
* Creates an array of tokens when given some PHP code.
*
* Starts by using token_get_all() but does a lot of extra processing
* to insert information about the context of the token.
*
* @param string $string The string to tokenize.
* @param string $eolChar The EOL character to use for splitting strings.
*
* @return array
*/
public function tokenizeString($string, $eolChar='\n')
{
$tokenTypes = array_keys($this->tokenValues);
$maxTokenLength = 0;
foreach ($tokenTypes as $token) {
if (strlen($token) > $maxTokenLength) {
$maxTokenLength = strlen($token);
}
}
$tokens = array();
$inString = '';
$stringChar = null;
$inComment = '';
$buffer = '';
$preStringBuffer = '';
$cleanBuffer = false;
$tokens[] = array(
'code' => T_OPEN_TAG,
'type' => 'T_OPEN_TAG',
'content' => '',
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t*** START TOKENIZING ***".PHP_EOL;
}
// Convert newlines to single characters for ease of
// processing. We will change them back later.
$string = str_replace($eolChar, "\n", $string);
$chars = str_split($string);
$numChars = count($chars);
for ($i = 0; $i < $numChars; $i++) {
$char = $chars[$i];
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $char);
$bufferContent = str_replace("\n", '\n', $buffer);
if ($inString !== '') {
echo "\t";
}
if ($inComment !== '') {
echo "\t";
}
echo "Process char $i => $content (buffer: $bufferContent)".PHP_EOL;
}
if ($inString === '' && $inComment === '' && $buffer !== '') {
// If the buffer only has whitespace and we are about to
// add a character, store the whitespace first.
if (trim($char) !== '' && trim($buffer) === '') {
$tokens[] = array(
'code' => T_WHITESPACE,
'type' => 'T_WHITESPACE',
'content' => str_replace("\n", $eolChar, $buffer),
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $buffer);
echo "=> Added token T_WHITESPACE ($content)".PHP_EOL;
}
$buffer = '';
}
// If the buffer is not whitespace and we are about to
// add a whitespace character, store the content first.
if ($inString === ''
&& $inComment === ''
&& trim($char) === ''
&& trim($buffer) !== ''
) {
$tokens[] = array(
'code' => T_STRING,
'type' => 'T_STRING',
'content' => str_replace("\n", $eolChar, $buffer),
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $buffer);
echo "=> Added token T_STRING ($content)".PHP_EOL;
}
$buffer = '';
}
}//end if
// Process strings.
if ($inComment === '' && in_array($char, $this->stringTokens) === true) {
if ($inString === $char) {
// This could be the end of the string, but make sure it
// is not escaped first.
$escapes = 0;
for ($x = ($i - 1); $x >= 0; $x--) {
if ($chars[$x] !== '\\') {
break;
}
$escapes++;
}
if ($escapes === 0 || ($escapes % 2) === 0) {
// There is an even number escape chars,
// so this is not escaped, it is the end of the string.
$tokens[] = array(
'code' => T_CONSTANT_ENCAPSED_STRING,
'type' => 'T_CONSTANT_ENCAPSED_STRING',
'content' => str_replace("\n", $eolChar, $buffer).$char,
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* found end of string *".PHP_EOL;
$content = str_replace("\n", '\n', $buffer.$char);
echo "=> Added token T_CONSTANT_ENCAPSED_STRING ($content)".PHP_EOL;
}
$buffer = '';
$preStringBuffer = '';
$inString = '';
$stringChar = null;
continue;
}
} else if ($inString === '') {
$inString = $char;
$stringChar = $i;
$preStringBuffer = $buffer;
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* looking for string closer *".PHP_EOL;
}
}//end if
}//end if
if ($inString !== '' && $char === "\n") {
// Unless this newline character is escaped, the string did not
// end before the end of the line, which means it probably
// wasn't a string at all (maybe a regex).
if ($chars[($i - 1)] !== '\\') {
$i = $stringChar;
$buffer = $preStringBuffer;
$preStringBuffer = '';
$inString = '';
$stringChar = null;
$char = $chars[$i];
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* found newline before end of string, bailing *".PHP_EOL;
}
}
}
$buffer .= $char;
// We don't look for special tokens inside strings,
// so if we are in a string, we can continue here now
// that the current char is in the buffer.
if ($inString !== '') {
continue;
}
// Special case for T_DIVIDE which can actually be
// the start of a regular expression.
if ($char === '/') {
$regex = $this->getRegexToken(
$i,
$string,
$chars,
$tokens,
$eolChar
);
if ($regex !== null) {
$tokens[] = array(
'code' => T_REGULAR_EXPRESSION,
'type' => 'T_REGULAR_EXPRESSION',
'content' => $regex['content'],
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $regex['content']);
echo '=> Added token T_REGULAR_EXPRESSION ('.$regex['content'].')'.PHP_EOL;
}
$i = $regex['end'];
$buffer = '';
$cleanBuffer = false;
continue;
}
}//end if
// Check for known tokens, but ignore tokens found that are not at
// the end of a string, like FOR and this.FORmat.
if (in_array(strtolower($buffer), $tokenTypes) === true
&& (preg_match('|[a-zA-z0-9_]|', $char) === 0
|| isset($chars[($i + 1)]) === false
|| preg_match('|[a-zA-z0-9_]|', $chars[($i + 1)]) === 0)
) {
$matchedToken = false;
$lookAheadLength = ($maxTokenLength - strlen($buffer));
if ($lookAheadLength > 0) {
// The buffer contains a token type, but we need
// to look ahead at the next chars to see if this is
// actually part of a larger token. For example,
// FOR and FOREACH.
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* buffer possibly contains token, looking ahead $lookAheadLength chars *".PHP_EOL;
}
$charBuffer = $buffer;
for ($x = 1; $x <= $lookAheadLength; $x++) {
if (isset($chars[($i + $x)]) === false) {
break;
}
$charBuffer .= $chars[($i + $x)];
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $charBuffer);
echo "\t=> Looking ahead $x chars => $content".PHP_EOL;
}
if (in_array(strtolower($charBuffer), $tokenTypes) === true) {
// We've found something larger that matches
// so we can ignore this char.
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$type = $this->tokenValues[strtolower($charBuffer)];
echo "\t* look ahead found more specific token ($type), ignoring $i *".PHP_EOL;
}
$matchedToken = true;
break;
}
}//end for
}//end if
if ($matchedToken === false) {
if (PHP_CODESNIFFER_VERBOSITY > 1 && $lookAheadLength > 0) {
echo "\t* look ahead found nothing *".PHP_EOL;
}
$value = $this->tokenValues[strtolower($buffer)];
$tokens[] = array(
'code' => constant($value),
'type' => $value,
'content' => $buffer,
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $buffer);
echo "=> Added token $value ($content)".PHP_EOL;
}
$cleanBuffer = true;
}//end if
} else if (in_array(strtolower($char), $tokenTypes) === true) {
// No matter what token we end up using, we don't
// need the content in the buffer any more because we have
// found a valid token.
$newContent = substr(str_replace("\n", $eolChar, $buffer), 0, -1);
if ($newContent !== '') {
$tokens[] = array(
'code' => T_STRING,
'type' => 'T_STRING',
'content' => $newContent,
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', substr($buffer, 0, -1));
echo "=> Added token T_STRING ($content)".PHP_EOL;
}
}
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* char is token, looking ahead ".($maxTokenLength - 1).' chars *'.PHP_EOL;
}
// The char is a token type, but we need to look ahead at the
// next chars to see if this is actually part of a larger token.
// For example, = and ===.
$charBuffer = $char;
$matchedToken = false;
for ($x = 1; $x <= $maxTokenLength; $x++) {
if (isset($chars[($i + $x)]) === false) {
break;
}
$charBuffer .= $chars[($i + $x)];
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $charBuffer);
echo "\t=> Looking ahead $x chars => $content".PHP_EOL;
}
if (in_array(strtolower($charBuffer), $tokenTypes) === true) {
// We've found something larger that matches
// so we can ignore this char.
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$type = $this->tokenValues[strtolower($charBuffer)];
echo "\t* look ahead found more specific token ($type), ignoring $i *".PHP_EOL;
}
$matchedToken = true;
break;
}
}//end for
if ($matchedToken === false) {
$value = $this->tokenValues[strtolower($char)];
$tokens[] = array(
'code' => constant($value),
'type' => $value,
'content' => $char,
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* look ahead found nothing *".PHP_EOL;
$content = str_replace("\n", '\n', $char);
echo "=> Added token $value ($content)".PHP_EOL;
}
$cleanBuffer = true;
} else {
$buffer = $char;
}
}//end if
// Keep track of content inside comments.
if ($inComment === ''
&& array_key_exists($buffer, $this->commentTokens) === true
) {
// This is not really a comment if the content
// looks like \// (i.e., it is escaped).
if (isset($chars[($i - 2)]) === true && $chars[($i - 2)] === '\\') {
$lastToken = array_pop($tokens);
$lastContent = $lastToken['content'];
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$value = $this->tokenValues[strtolower($lastContent)];
$content = str_replace("\n", '\n', $lastContent);
echo "=> Removed token $value ($content)".PHP_EOL;
}
$lastChars = str_split($lastContent);
$lastNumChars = count($lastChars);
for ($x = 0; $x < $lastNumChars; $x++) {
$lastChar = $lastChars[$x];
$value = $this->tokenValues[strtolower($lastChar)];
$tokens[] = array(
'code' => constant($value),
'type' => $value,
'content' => $lastChar,
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $lastChar);
echo "=> Added token $value ($content)".PHP_EOL;
}
}
} else {
// We have started a comment.
$inComment = $buffer;
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* looking for end of comment *".PHP_EOL;
}
}
} else if ($inComment !== '') {
if ($this->commentTokens[$inComment] === null) {
// Comment ends at the next newline.
if (strpos($buffer, "\n") !== false) {
$inComment = '';
}
} else {
if ($this->commentTokens[$inComment] === $buffer) {
$inComment = '';
}
}
if (PHP_CODESNIFFER_VERBOSITY > 1) {
if ($inComment === '') {
echo "\t* found end of comment *".PHP_EOL;
}
}
if ($inComment === '' && $cleanBuffer === false) {
$tokens[] = array(
'code' => T_STRING,
'type' => 'T_STRING',
'content' => str_replace("\n", $eolChar, $buffer),
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $buffer);
echo "=> Added token T_STRING ($content)".PHP_EOL;
}
$buffer = '';
}
}//end if
if ($cleanBuffer === true) {
$buffer = '';
$cleanBuffer = false;
}
}//end foreach
// Trim the last newline off the end of the buffer before
// adding it's contents to the token stack.
// This is so we don't count the very final newline of a file.
$buffer = substr($buffer, 0, -1);
if (empty($buffer) === false) {
// Buffer contians whitespace from the end of the file, and not
// just the final newline.
$tokens[] = array(
'code' => T_WHITESPACE,
'type' => 'T_WHITESPACE',
'content' => str_replace("\n", $eolChar, $buffer),
);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace($eolChar, '\n', $buffer);
echo "=> Added token T_WHITESPACE ($content)".PHP_EOL;
}
}
$tokens[] = array(
'code' => T_CLOSE_TAG,
'type' => 'T_CLOSE_TAG',
'content' => '',
);
/*
Now that we have done some basic tokenizing, we need to
modify the tokens to join some together and split some apart
so they match what the PHP tokenizer does.
*/
$finalTokens = array();
$newStackPtr = 0;
$numTokens = count($tokens);
for ($stackPtr = 0; $stackPtr < $numTokens; $stackPtr++) {
$token = $tokens[$stackPtr];
/*
Look for comments and join the tokens together.
*/
if (array_key_exists($token['content'], $this->commentTokens) === true) {
$newContent = '';
$tokenContent = $token['content'];
$endContent = $this->commentTokens[$tokenContent];
while ($tokenContent !== $endContent) {
if ($endContent === null
&& strpos($tokenContent, $eolChar) !== false
) {
// A null end token means the comment ends at the end of
// the line so we look for newlines and split the token.
$tokens[$stackPtr]['content'] = substr(
$tokenContent,
(strpos($tokenContent, $eolChar) + strlen($eolChar))
);
$tokenContent = substr(
$tokenContent,
0,
(strpos($tokenContent, $eolChar) + strlen($eolChar))
);
// If the substr failed, skip the token as the content
// will now be blank.
if ($tokens[$stackPtr]['content'] !== false) {
$stackPtr--;
}
break;
}//end if
$stackPtr++;
$newContent .= $tokenContent;
if (isset($tokens[$stackPtr]) === false) {
break;
}
$tokenContent = $tokens[$stackPtr]['content'];
}//end while
// Save the new content in the current token so
// the code below can chop it up on newlines.
$token['content'] = $newContent.$tokenContent;
}//end if
/*
If this token has newlines in its content, split each line up
and create a new token for each line. We do this so it's easier
to asertain where errors occur on a line.
Note that $token[1] is the token's content.
*/
if (strpos($token['content'], $eolChar) !== false) {
$tokenLines = explode($eolChar, $token['content']);
$numLines = count($tokenLines);
for ($i = 0; $i < $numLines; $i++) {
$newToken['content'] = $tokenLines[$i];
if ($i === ($numLines - 1)) {
if ($tokenLines[$i] === '') {
break;
}
} else {
$newToken['content'] .= $eolChar;
}
$newToken['type'] = $token['type'];
$newToken['code'] = $token['code'];
$finalTokens[$newStackPtr] = $newToken;
$newStackPtr++;
}
} else {
$finalTokens[$newStackPtr] = $token;
$newStackPtr++;
}//end if
// Convert numbers, including decimals.
if ($token['code'] === T_STRING
|| $token['code'] === T_OBJECT_OPERATOR
) {
$newContent = '';
$oldStackPtr = $stackPtr;
while (preg_match('|^[0-9\.]+$|', $tokens[$stackPtr]['content']) !== 0) {
$newContent .= $tokens[$stackPtr]['content'];
$stackPtr++;
}
if ($newContent !== '' && $newContent !== '.') {
$finalTokens[($newStackPtr - 1)]['content'] = $newContent;
if (ctype_digit($newContent) === true) {
$finalTokens[($newStackPtr - 1)]['code']
= constant('T_LNUMBER');
$finalTokens[($newStackPtr - 1)]['type'] = 'T_LNUMBER';
} else {
$finalTokens[($newStackPtr - 1)]['code']
= constant('T_DNUMBER');
$finalTokens[($newStackPtr - 1)]['type'] = 'T_DNUMBER';
}
$stackPtr--;
} else {
$stackPtr = $oldStackPtr;
}
}//end if
}//end for
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t*** END TOKENIZING ***".PHP_EOL;
}
return $finalTokens;
}//end tokenizeString()
/**
* Tokenizes a regular expression if one is found.
*
* If a regular expression is not found, NULL is returned.
*
* @param string $char The index of the possible regex start character.
* @param string $string The complete content of the string being tokenized.
* @param string $chars An array of characters being tokenized.
* @param string $tokens The current array of tokens found in the string.
* @param string $eolChar The EOL character to use for splitting strings.
*
* @return void
*/
public function getRegexToken($char, $string, $chars, $tokens, $eolChar)
{
$beforeTokens = array(
T_EQUAL,
T_OPEN_PARENTHESIS,
T_RETURN,
T_BOOLEAN_OR,
T_BOOLEAN_AND,
T_BITWISE_OR,
T_BITWISE_AND,
T_COMMA,
T_COLON,
T_TYPEOF,
);
$afterTokens = array(
',',
')',
';',
' ',
'.',
$eolChar,
);
// Find the last non-whitespace token that was added
// to the tokens array.
$numTokens = count($tokens);
for ($prev = ($numTokens - 1); $prev >= 0; $prev--) {
if (in_array($tokens[$prev]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === false) {
break;
}
}
if (in_array($tokens[$prev]['code'], $beforeTokens) === false) {
return null;
}
// This is probably a regular expression, so look for the end of it.
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$content = str_replace("\n", '\n', $char);
echo "\t* token possibly starts a regular expression *".PHP_EOL;
}
$numChars = count($chars);
for ($next = ($char + 1); $next < $numChars; $next++) {
if ($chars[$next] === '/') {
// Just make sure this is not escaped first.
if ($chars[($next - 1)] !== '\\') {
// In the simple form: /.../ so we found the end.
break;
} else if ($chars[($next - 2)] === '\\') {
// In the form: /...\\/ so we found the end.
break;
}
} else {
$possibleEolChar = substr($string, $next, strlen($eolChar));
if ($possibleEolChar === $eolChar) {
// This is the last token on the line and regular
// expressions need to be defined on a single line,
// so this is not a regular expression.
break;
}
}
}
if ($chars[$next] !== '/') {
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* could not find end of regular expression *".PHP_EOL;
}
return null;
}
while (preg_match('|[a-zA-Z]|', $chars[($next + 1)]) !== 0) {
// The token directly after the end of the regex can
// be modifiers like global and case insensitive
// (.e.g, /pattern/gi).
$next++;
}
$regexEnd = $next;
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* found end of regular expression at token $regexEnd *".PHP_EOL;
}
for ($next = ($next + 1); $next < $numChars; $next++) {
if ($chars[$next] !== ' ') {
break;
} else {
$possibleEolChar = substr($string, $next, strlen($eolChar));
if ($possibleEolChar === $eolChar) {
// This is the last token on the line.
break;
}
}
}
if (in_array($chars[$next], $afterTokens) === false) {
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t* tokens after regular expression do not look correct *".PHP_EOL;
}
return null;
}
// This is a regular expression, so join all the tokens together.
$content = '';
for ($x = $char; $x <= $regexEnd; $x++) {
$content .= $chars[$x];
}
$token = array(
'start' => $char,
'end' => $regexEnd,
'content' => $content,
);
return $token;
}//end getRegexToken()
/**
* Performs additional processing after main tokenizing.
*
* This additional processing looks for properties, labels and objects.
*
* @param array &$tokens The array of tokens to process.
* @param string $eolChar The EOL character to use for splitting strings.
*
* @return void
*/
public function processAdditional(&$tokens, $eolChar)
{
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t*** START ADDITIONAL JS PROCESSING ***".PHP_EOL;
}
$numTokens = count($tokens);
$classStack = array();
for ($i = 0; $i < $numTokens; $i++) {
if (PHP_CODESNIFFER_VERBOSITY > 1) {
$type = $tokens[$i]['type'];
$content = str_replace($eolChar, '\n', $tokens[$i]['content']);
echo str_repeat("\t", count($classStack));
echo "\tProcess token $i: $type => $content".PHP_EOL;
}
if ($tokens[$i]['code'] === T_OPEN_CURLY_BRACKET
&& isset($tokens[$i]['scope_condition']) === false
) {
$classStack[] = $i;
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo str_repeat("\t", count($classStack));
echo "\t=> Found property opener".PHP_EOL;
}
// This could also be an object definition.
for ($x = ($i - 1); $x >= 0; $x--) {
if (in_array($tokens[$x]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === false) {
// Non-whitespace content.
break;
}
}
if ($tokens[$x]['code'] === T_EQUAL) {
for ($x--; $x >= 0; $x--) {
if (in_array($tokens[$x]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === false) {
break;
}
}
if ($tokens[$x]['code'] === T_STRING
|| $tokens[$x]['code'] === T_PROTOTYPE
) {
// Find the first string in this definition.
// E.g., WantedString.DontWantThis.prototype
for ($x--; $x >= 0; $x--) {
$wantedTokens = array(
T_STRING,
T_PROTOTYPE,
T_OBJECT_OPERATOR,
);
if (in_array($tokens[$x]['code'], $wantedTokens) === false) {
$x++;
break;
}
}
$closer = $tokens[$i]['bracket_closer'];
$tokens[$i]['scope_condition'] = $x;
$tokens[$i]['scope_closer'] = $closer;
$tokens[$closer]['scope_condition'] = $x;
$tokens[$closer]['scope_opener'] = $i;
$tokens[$x]['scope_opener'] = $i;
$tokens[$x]['scope_closer'] = $closer;
$tokens[$x]['code'] = T_OBJECT;
$tokens[$x]['type'] = 'T_OBJECT';
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo str_repeat("\t", count($classStack));
echo "\t* token $x converted from T_STRING to T_OBJECT *".PHP_EOL;
echo str_repeat("\t", count($classStack));
echo "\t* set scope opener ($i) and closer ($closer) for token $x *".PHP_EOL;
}
}//end if
}//end if
} else if ($tokens[$i]['code'] === T_CLOSE_CURLY_BRACKET
&& (isset($tokens[$i]['scope_condition']) === false
|| $tokens[$tokens[$i]['scope_condition']]['code'] === T_OBJECT)
) {
$opener = array_pop($classStack);
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo str_repeat("\t", count($classStack));
echo "\t\t=> Found property closer for $opener".PHP_EOL;
}
} else if ($tokens[$i]['code'] === T_COLON) {
// If it is a scope opener, it belongs to a
// DEFAULT or CASE statement.
if (isset($tokens[$i]['scope_condition']) === true) {
continue;
}
// Make sure this is not part of an inline IF statement.
for ($x = ($i - 1); $x >= 0; $x--) {
if ($tokens[$x]['code'] === T_INLINE_THEN) {
continue(2);
} else if ($tokens[$x]['line'] < $tokens[$i]['line']) {
break;
}
}
// The string to the left of the colon is either a property or label.
for ($label = ($i - 1); $label >= 0; $label--) {
if (in_array($tokens[$label]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === false) {
break;
}
}
if ($tokens[$label]['code'] !== T_STRING) {
continue;
}
if (empty($classStack) === false) {
$tokens[$label]['code'] = T_PROPERTY;
$tokens[$label]['type'] = 'T_PROPERTY';
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo str_repeat("\t", count($classStack));
echo "\t* token $label converted from T_STRING to T_PROPERTY *".PHP_EOL;
}
// If the net token after the colon is a curly brace,
// this property is actually an object, so we can give it
// and opener and closer.
for ($x = ($i + 1); $x < $numTokens; $x++) {
if (in_array($tokens[$x]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === false) {
break;
}
}
if ($tokens[$x]['code'] === T_OPEN_CURLY_BRACKET) {
$closer = $tokens[$x]['bracket_closer'];
$tokens[$label]['scope_opener'] = $x;
$tokens[$label]['scope_closer'] = $closer;
$tokens[$x]['scope_condition'] = $label;
$tokens[$x]['scope_closer'] = $closer;
$tokens[$closer]['scope_condition'] = $label;
$tokens[$closer]['scope_opener'] = $x;
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo str_repeat("\t", count($classStack));
echo "\t* set scope opener ($x) and closer ($closer) for token $label *".PHP_EOL;
}
}
} else {
$tokens[$label]['code'] = T_LABEL;
$tokens[$label]['type'] = 'T_LABEL';
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo str_repeat("\t", count($classStack));
echo "\t* token $label converted from T_STRING to T_LABEL *".PHP_EOL;
}
}
}//end if
}//end for
if (PHP_CODESNIFFER_VERBOSITY > 1) {
echo "\t*** END ADDITIONAL JS PROCESSING ***".PHP_EOL;
}
}//end processAdditional()
}//end class
?>
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