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<?php
/**
* Generic_Sniffs_Whitespace_ScopeIndentSniff.
*
* 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
*/
/**
* Generic_Sniffs_Whitespace_ScopeIndentSniff.
*
* Checks that control structures are structured correctly, and their content
* is indented correctly. This sniff will throw errors if tabs are used
* for indentation rather than spaces.
*
* @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
* @version Release: 1.3.3
* @link http://pear.php.net/package/PHP_CodeSniffer
*/
class Generic_Sniffs_WhiteSpace_ScopeIndentSniff implements PHP_CodeSniffer_Sniff
{
/**
* The number of spaces code should be indented.
*
* @var int
*/
public $indent = 4;
/**
* Does the indent need to be exactly right.
*
* If TRUE, indent needs to be exactly $ident spaces. If FALSE,
* indent needs to be at least $ident spaces (but can be more).
*
* @var bool
*/
public $exact = false;
/**
* Any scope openers that should not cause an indent.
*
* @var array(int)
*/
protected $nonIndentingScopes = array();
/**
* Returns an array of tokens this test wants to listen for.
*
* @return array
*/
public function register()
{
return PHP_CodeSniffer_Tokens::$scopeOpeners;
}//end register()
/**
* Processes this test, when one of its tokens is encountered.
*
* @param PHP_CodeSniffer_File $phpcsFile All the tokens found in the document.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return void
*/
public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
{
$tokens = $phpcsFile->getTokens();
// If this is an inline condition (ie. there is no scope opener), then
// return, as this is not a new scope.
if (isset($tokens[$stackPtr]['scope_opener']) === false) {
return;
}
if ($tokens[$stackPtr]['code'] === T_ELSE) {
$next = $phpcsFile->findNext(
PHP_CodeSniffer_Tokens::$emptyTokens,
($stackPtr + 1),
null,
true
);
// We will handle the T_IF token in another call to process.
if ($tokens[$next]['code'] === T_IF) {
return;
}
}
// Find the first token on this line.
$firstToken = $stackPtr;
for ($i = $stackPtr; $i >= 0; $i--) {
// Record the first code token on the line.
if (in_array($tokens[$i]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === false) {
$firstToken = $i;
}
// It's the start of the line, so we've found our first php token.
if ($tokens[$i]['column'] === 1) {
break;
}
}
// Based on the conditions that surround this token, determine the
// indent that we expect this current content to be.
$expectedIndent = $this->calculateExpectedIndent($tokens, $firstToken);
// Don't process the first token if it is a closure because they have
// different indentation rules as they are often used as function arguments
// for multi-line function calls. But continue to process the content of the
// closure because it should be indented as normal.
if ($tokens[$firstToken]['code'] !== T_CLOSURE
&& $tokens[$firstToken]['column'] !== $expectedIndent
) {
$error = 'Line indented incorrectly; expected %s spaces, found %s';
$data = array(
($expectedIndent - 1),
($tokens[$firstToken]['column'] - 1),
);
$phpcsFile->addError($error, $stackPtr, 'Incorrect', $data);
}
$scopeOpener = $tokens[$stackPtr]['scope_opener'];
$scopeCloser = $tokens[$stackPtr]['scope_closer'];
// Some scopes are expected not to have indents.
if (in_array($tokens[$firstToken]['code'], $this->nonIndentingScopes) === false) {
$indent = ($expectedIndent + $this->indent);
} else {
$indent = $expectedIndent;
}
$newline = false;
$commentOpen = false;
$inHereDoc = false;
// Only loop over the content between the opening and closing brace, not
// the braces themselves.
for ($i = ($scopeOpener + 1); $i < $scopeCloser; $i++) {
// If this token is another scope, skip it as it will be handled by
// another call to this sniff.
if (in_array($tokens[$i]['code'], PHP_CodeSniffer_Tokens::$scopeOpeners) === true) {
if (isset($tokens[$i]['scope_opener']) === true) {
$i = $tokens[$i]['scope_closer'];
// If the scope closer is followed by a semi-colon, the semi-colon is part
// of the closer and should also be ignored. This most commonly happens with
// CASE statements that end with "break;", where we don't want to stop
// ignoring at the break, but rather at the semi-colon.
$nextToken = $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($i + 1), null, true);
if ($tokens[$nextToken]['code'] === T_SEMICOLON) {
$i = $nextToken;
}
} else {
// If this token does not have a scope_opener indice, then
// it's probably an inline scope, so let's skip to the next
// semicolon. Inline scopes include inline if's, abstract
// methods etc.
$nextToken = $phpcsFile->findNext(T_SEMICOLON, $i, $scopeCloser);
if ($nextToken !== false) {
$i = $nextToken;
}
}
continue;
}//end if
// If this is a HEREDOC then we need to ignore it as the
// whitespace before the contents within the HEREDOC are
// considered part of the content.
if ($tokens[$i]['code'] === T_START_HEREDOC) {
$inHereDoc = true;
continue;
} else if ($inHereDoc === true) {
if ($tokens[$i]['code'] === T_END_HEREDOC) {
$inHereDoc = false;
}
continue;
}
if ($tokens[$i]['column'] === 1) {
// We started a newline.
$newline = true;
}
if ($newline === true && $tokens[$i]['code'] !== T_WHITESPACE) {
// If we started a newline and we find a token that is not
// whitespace, then this must be the first token on the line that
// must be indented.
$newline = false;
$firstToken = $i;
$column = $tokens[$firstToken]['column'];
// Special case for non-PHP code.
if ($tokens[$firstToken]['code'] === T_INLINE_HTML) {
$trimmedContentLength
= strlen(ltrim($tokens[$firstToken]['content']));
if ($trimmedContentLength === 0) {
continue;
}
$contentLength = strlen($tokens[$firstToken]['content']);
$column = ($contentLength - $trimmedContentLength + 1);
}
// Check to see if this constant string spans multiple lines.
// If so, then make sure that the strings on lines other than the
// first line are indented appropriately, based on their whitespace.
if (in_array($tokens[$firstToken]['code'], PHP_CodeSniffer_Tokens::$stringTokens) === true) {
if (in_array($tokens[($firstToken - 1)]['code'], PHP_CodeSniffer_Tokens::$stringTokens) === true) {
// If we find a string that directly follows another string
// then its just a string that spans multiple lines, so we
// don't need to check for indenting.
continue;
}
}
// This is a special condition for T_DOC_COMMENT and C-style
// comments, which contain whitespace between each line.
$comments = array(
T_COMMENT,
T_DOC_COMMENT
);
if (in_array($tokens[$firstToken]['code'], $comments) === true) {
$content = trim($tokens[$firstToken]['content']);
if (preg_match('|^/\*|', $content) !== 0) {
// Check to see if the end of the comment is on the same line
// as the start of the comment. If it is, then we don't
// have to worry about opening a comment.
if (preg_match('|\*/$|', $content) === 0) {
// We don't have to calculate the column for the
// start of the comment as there is a whitespace
// token before it.
$commentOpen = true;
}
} else if ($commentOpen === true) {
if ($content === '') {
// We are in a comment, but this line has nothing on it
// so let's skip it.
continue;
}
$contentLength = strlen($tokens[$firstToken]['content']);
$trimmedContentLength
= strlen(ltrim($tokens[$firstToken]['content']));
$column = ($contentLength - $trimmedContentLength + 1);
if (preg_match('|\*/$|', $content) !== 0) {
$commentOpen = false;
}
}//end if
}//end if
// The token at the start of the line, needs to have its' column
// greater than the relative indent we set above. If it is less,
// an error should be shown.
if ($column !== $indent) {
if ($this->exact === true || $column < $indent) {
$type = 'IncorrectExact';
$error = 'Line indented incorrectly; expected ';
if ($this->exact === false) {
$error .= 'at least ';
$type = 'Incorrect';
}
$error .= '%s spaces, found %s';
$data = array(
($indent - 1),
($column - 1),
);
$phpcsFile->addError($error, $firstToken, $type, $data);
}
}//end if
}//end if
}//end for
}//end process()
/**
* Calculates the expected indent of a token.
*
* Returns the column at which the token should be indented to, so 1 means
* that the token should not be indented at all.
*
* @param array $tokens The stack of tokens for this file.
* @param int $stackPtr The position of the token to get indent for.
*
* @return int
*/
protected function calculateExpectedIndent(array $tokens, $stackPtr)
{
$conditionStack = array();
// Empty conditions array (top level structure).
if (empty($tokens[$stackPtr]['conditions']) === true) {
if (isset($tokens[$stackPtr]['nested_parenthesis']) === true
&& empty($tokens[$stackPtr]['nested_parenthesis']) === false
) {
// Wrapped in parenthesis means it is probably in a
// function call (like a closure) so we have to assume indent
// is correct here and someone else will check it more
// carefully in another sniff.
return $tokens[$stackPtr]['column'];
} else {
return 1;
}
}
$tokenConditions = $tokens[$stackPtr]['conditions'];
foreach ($tokenConditions as $id => $condition) {
// If it's an indenting scope ie. it's not in our array of
// scopes that don't indent, add it to our condition stack.
if (in_array($condition, $this->nonIndentingScopes) === false) {
$conditionStack[$id] = $condition;
}
}
$indent = ((count($conditionStack) * $this->indent) + 1);
return $indent;
}//end calculateExpectedIndent()
}//end class
?>
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