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PEAR/FunctionDeclaration: examine arrow function declarations + fix fixer conflict #3661

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PEAR/FunctionDeclaration: examine arrow function declarations + fix fixer conflict #3661

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PEAR/FunctionDeclaration: examine arrow function declarations
jrfnl Sep 9, 2022
db548df
Squiz/MultiLineFunctionDeclaration: add tests for arrow function decl…
jrfnl Sep 11, 2022
d479811
PEAR/FunctionDeclaration: prevent fixer conflict
jrfnl Sep 11, 2022
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136 changes: 86 additions & 50 deletions src/Standards/PEAR/Sniffs/Functions/FunctionDeclarationSniff.php
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Expand Up @@ -46,6 +46,7 @@ public function register()
return [
T_FUNCTION,
T_CLOSURE,
T_FN,
];

}//end register()
Expand Down Expand Up @@ -75,7 +76,9 @@ public function process(File $phpcsFile, $stackPtr)
$openBracket = $tokens[$stackPtr]['parenthesis_opener'];
$closeBracket = $tokens[$stackPtr]['parenthesis_closer'];

if (strtolower($tokens[$stackPtr]['content']) === 'function') {
if (strtolower($tokens[$stackPtr]['content']) === 'function'
|| strtolower($tokens[$stackPtr]['content']) === 'fn'
) {
// Must be one space after the FUNCTION keyword.
if ($tokens[($stackPtr + 1)]['content'] === $phpcsFile->eolChar) {
$spaces = 'newline';
Expand All @@ -86,9 +89,13 @@ public function process(File $phpcsFile, $stackPtr)
}

if ($spaces !== 1) {
$error = 'Expected 1 space after FUNCTION keyword; %s found';
$data = [$spaces];
$fix = $phpcsFile->addFixableError($error, $stackPtr, 'SpaceAfterFunction', $data);
$error = 'Expected 1 space after %s keyword; %s found';
$data = [
strtoupper($tokens[$stackPtr]['content']),
$spaces,
];

$fix = $phpcsFile->addFixableError($error, $stackPtr, 'SpaceAfterFunction', $data);
if ($fix === true) {
if ($spaces === 0) {
$phpcsFile->fixer->addContent($stackPtr, ' ');
Expand All @@ -99,9 +106,9 @@ public function process(File $phpcsFile, $stackPtr)
}
}//end if

// Must be no space before the opening parenthesis. For closures, this is
// enforced by the previous check because there is no content between the keywords
// and the opening parenthesis.
// Must be no space before the opening parenthesis. For closures and arrow functions,
// this is enforced by the previous check because there is no content between
// the keywords and the opening parenthesis.
// Unfinished closures are tokenized as T_FUNCTION however, and can be excluded
// by checking for the scope_opener.
if ($tokens[$stackPtr]['code'] === T_FUNCTION
Expand Down Expand Up @@ -257,6 +264,10 @@ public function isMultiLineDeclaration($phpcsFile, $stackPtr, $openBracket, $tok
*/
public function processSingleLineDeclaration($phpcsFile, $stackPtr, $tokens)
{
if ($tokens[$stackPtr]['code'] === T_FN) {
return;
}

if ($tokens[$stackPtr]['code'] === T_CLOSURE) {
$sniff = new OpeningFunctionBraceKernighanRitchieSniff();
} else {
Expand Down Expand Up @@ -297,61 +308,86 @@ public function processMultiLineDeclaration($phpcsFile, $stackPtr, $tokens)
return;
}

// The opening brace needs to be one space away from the closing parenthesis.
// The opening brace needs to be on the same line as the closing parenthesis.
// There should only be one space between the closing parenthesis - or the end of the
// return type - and the opening brace.
$opener = $tokens[$stackPtr]['scope_opener'];
if ($tokens[$opener]['line'] !== $tokens[$closeBracket]['line']) {
$error = 'The closing parenthesis and the opening brace of a multi-line function declaration must be on the same line';
$fix = $phpcsFile->addFixableError($error, $opener, 'NewlineBeforeOpenBrace');
if ($fix === true) {
$prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($opener - 1), $closeBracket, true);
$phpcsFile->fixer->beginChangeset();
$phpcsFile->fixer->addContent($prev, ' {');
$error = 'The closing parenthesis and the %s of a multi-line function declaration must be on the same line';
$code = 'NewlineBeforeOpenBrace';
$data = ['opening brace'];

// If the opener is on a line by itself, removing it will create
// an empty line, so just remove the entire line instead.
$prev = $phpcsFile->findPrevious(T_WHITESPACE, ($opener - 1), $closeBracket, true);
$next = $phpcsFile->findNext(T_WHITESPACE, ($opener + 1), null, true);
if ($tokens[$stackPtr]['code'] === T_FN) {
$code = 'NewlineBeforeArrow';
$data = ['arrow'];
}

if ($tokens[$prev]['line'] < $tokens[$opener]['line']
&& $tokens[$next]['line'] > $tokens[$opener]['line']
) {
// Clear the whole line.
for ($i = ($prev + 1); $i < $next; $i++) {
if ($tokens[$i]['line'] === $tokens[$opener]['line']) {
$phpcsFile->fixer->replaceToken($i, '');
$prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($opener - 1), $closeBracket, true);
if ($tokens[$prev]['line'] === $tokens[$opener]['line']) {
// End of the return type is not on the same line as the close parenthesis.
$phpcsFile->addError($error, $opener, $code, $data);
} else {
$fix = $phpcsFile->addFixableError($error, $opener, $code, $data);
if ($fix === true) {
$phpcsFile->fixer->beginChangeset();
$phpcsFile->fixer->addContent($prev, ' '.$tokens[$opener]['content']);

// If the opener is on a line by itself, removing it will create
// an empty line, so just remove the entire line instead.
$prev = $phpcsFile->findPrevious(T_WHITESPACE, ($opener - 1), $closeBracket, true);
$next = $phpcsFile->findNext(T_WHITESPACE, ($opener + 1), null, true);

if ($tokens[$prev]['line'] < $tokens[$opener]['line']
&& $tokens[$next]['line'] > $tokens[$opener]['line']
) {
// Clear the whole line.
for ($i = ($prev + 1); $i < $next; $i++) {
if ($tokens[$i]['line'] === $tokens[$opener]['line']) {
$phpcsFile->fixer->replaceToken($i, '');
}
}
} else {
// Just remove the opener.
$phpcsFile->fixer->replaceToken($opener, '');
if ($tokens[$next]['line'] === $tokens[$opener]['line']) {
$phpcsFile->fixer->replaceToken(($opener + 1), '');
}
}
} else {
// Just remove the opener.
$phpcsFile->fixer->replaceToken($opener, '');
if ($tokens[$next]['line'] === $tokens[$opener]['line']) {
$phpcsFile->fixer->replaceToken(($opener + 1), '');
}
}

$phpcsFile->fixer->endChangeset();
$phpcsFile->fixer->endChangeset();
}//end if

return;
}//end if
}//end if

$prev = $tokens[($opener - 1)];
if ($prev['code'] !== T_WHITESPACE) {
$length = 0;
} else {
$prev = $tokens[($opener - 1)];
if ($prev['code'] !== T_WHITESPACE) {
$length = 0;
} else {
$length = strlen($prev['content']);
$length = strlen($prev['content']);
}

if ($length !== 1) {
$error = 'There must be a single space before the %s of a multi-line function declaration; found %s spaces';
$code = 'SpaceBeforeOpenBrace';
$data = ['opening brace'];

if ($tokens[$stackPtr]['code'] === T_FN) {
$code = 'SpaceBeforeArrow';
$data = ['arrow'];
}

if ($length !== 1) {
$error = 'There must be a single space between the closing parenthesis and the opening brace of a multi-line function declaration; found %s spaces';
$fix = $phpcsFile->addFixableError($error, ($opener - 1), 'SpaceBeforeOpenBrace', [$length]);
if ($fix === true) {
if ($length === 0) {
$phpcsFile->fixer->addContentBefore($opener, ' ');
} else {
$phpcsFile->fixer->replaceToken(($opener - 1), ' ');
}
}
$data[] = $length;

return;
}//end if
$fix = $phpcsFile->addFixableError($error, ($opener - 1), $code, $data);
if ($fix === true) {
if ($length === 0) {
$phpcsFile->fixer->addContentBefore($opener, ' ');
} else {
$phpcsFile->fixer->replaceToken(($opener - 1), ' ');
}
}
}//end if

}//end processMultiLineDeclaration()
Expand Down
35 changes: 35 additions & 0 deletions src/Standards/PEAR/Tests/Functions/FunctionDeclarationUnitTest.inc
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Expand Up @@ -465,3 +465,38 @@ new ExceptionMessage(),
) {
}
}

$arrowNoArgs = fn () => $retrievedfromscope;

$arrowSingleLineArgs = fn (Type $param1, int $param2, string $param3): \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1,
$longerVar2,
&...$muchLongerVar3
) => $longVar1;

$arrowNoArgs = fn( )
=> $retrievedfromscope;

$arrowSingleLineArgs = fn( Type $param1 , int $param2, string $param3
) : \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1, $longerVar2,

& ... $muchLongerVar3) => $longVar1;

// Prevent fixer conflict with itself.
function foo(
$param1,
)
: \SomeClass
{
}

function foo(
$param1,
$param2
) : // comment.
\Package\Sub\SomeClass {}
34 changes: 34 additions & 0 deletions src/Standards/PEAR/Tests/Functions/FunctionDeclarationUnitTest.inc.fixed
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Expand Up @@ -463,3 +463,37 @@ new ExceptionMessage(),
) {
}
}

$arrowNoArgs = fn () => $retrievedfromscope;

$arrowSingleLineArgs = fn (Type $param1, int $param2, string $param3): \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1,
$longerVar2,
&...$muchLongerVar3
) => $longVar1;

$arrowNoArgs = fn ( )
=> $retrievedfromscope;

$arrowSingleLineArgs = fn ( Type $param1 , int $param2, string $param3
) : \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1, $longerVar2,
& ... $muchLongerVar3
) => $longVar1;

// Prevent fixer conflict with itself.
function foo(
$param1,
)
: \SomeClass {
}

function foo(
$param1,
$param2
) : // comment.
\Package\Sub\SomeClass {}
7 changes: 7 additions & 0 deletions src/Standards/PEAR/Tests/Functions/FunctionDeclarationUnitTest.php
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Expand Up @@ -99,6 +99,13 @@ public function getErrorList($testFile='FunctionDeclarationUnitTest.inc')
371 => 1,
402 => 1,
406 => 1,
479 => 1,
482 => 1,
483 => 2,
487 => 1,
488 => 2,
495 => 1,
502 => 2,
];
} else {
$errors = [
Expand Down
21 changes: 21 additions & 0 deletions src/Standards/Squiz/Tests/Functions/MultiLineFunctionDeclarationUnitTest.inc
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Expand Up @@ -302,3 +302,24 @@ new ExceptionMessage(),
) {
}
}

$arrowNoArgs = fn () => $retrievedfromscope;

$arrowSingleLineArgs = fn (Type $param1, int $param2, string $param3): \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1,
$longerVar2,
&...$muchLongerVar3
) => $longVar1;

$arrowNoArgs = fn( )
=> $retrievedfromscope;

$arrowSingleLineArgs = fn( Type $param1 , int $param2, string $param3
) : \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1, $longerVar2,

& ... $muchLongerVar3) => $longVar1;
21 changes: 21 additions & 0 deletions src/Standards/Squiz/Tests/Functions/MultiLineFunctionDeclarationUnitTest.inc.fixed
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Expand Up @@ -314,3 +314,24 @@ new ExceptionMessage(),
) {
}
}

$arrowNoArgs = fn () => $retrievedfromscope;

$arrowSingleLineArgs = fn (Type $param1, int $param2, string $param3): \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1,
$longerVar2,
&...$muchLongerVar3
) => $longVar1;

$arrowNoArgs = fn ( )
=> $retrievedfromscope;

$arrowSingleLineArgs = fn ( Type $param1 , int $param2, string $param3) : \ReturnType => $retrievedfromscope;

$arrowMultiLineArgs = fn (
$longVar1,
$longerVar2,
& ... $muchLongerVar3
) => $longVar1;
6 changes: 6 additions & 0 deletions src/Standards/Squiz/Tests/Functions/MultiLineFunctionDeclarationUnitTest.php
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Expand Up @@ -70,6 +70,12 @@ public function getErrorList($testFile='MultiLineFunctionDeclarationUnitTest.inc
252 => 1,
253 => 1,
254 => 1,
316 => 1,
319 => 1,
320 => 1,
323 => 1,
324 => 1,
325 => 2,
];
} else {
$errors = [
Expand Down