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| 1 | <?php |
| 2 | /** |
| 3 | * Utility class with functions for processing doc blocks. |
| 4 | * |
| 5 | * @package automattic/jetpack-codesniffer |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Codesniffer\Utils; |
| 9 | |
| 10 | use PHP_CodeSniffer\Exceptions\RuntimeException; |
| 11 | use PHP_CodeSniffer\Files\File; |
| 12 | use PHP_CodeSniffer\Util\Tokens as PHPCS_Tokens; |
| 13 | |
| 14 | /** |
| 15 | * Utility class with functions for processing doc blocks. |
| 16 | */ |
| 17 | class DocBlocks { |
| 18 | |
| 19 | /** |
| 20 | * Find the doc block for a class, interface, trait, function, property, constant, or method declaration. |
| 21 | * |
| 22 | * @param File $phpcsFile The file where the token was found. |
| 23 | * @param int $stackPtr Token position. Must be a T_CLASS, T_INTERFACE, T_TRAIT, T_FUNCTION, T_VARIABLE, or T_CONST. |
| 24 | * @return int|false Position of the T_DOC_COMMENT_OPEN_TAG for the class, if any is found. |
| 25 | * @throws RuntimeException If $stackPtr is not a supported token. |
| 26 | */ |
| 27 | public static function findDocBlockForDeclaration( File $phpcsFile, $stackPtr ) { |
| 28 | $valid = Tokens::tokensPreceedingDeclaration( $phpcsFile, $stackPtr ); |
| 29 | return Navigation::findPreviousInRun( $phpcsFile, T_DOC_COMMENT_OPEN_TAG, $valid, $stackPtr - 1 ); |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * Find the token before which to insert a doc block for a declaration. |
| 34 | * |
| 35 | * Assumes no doc block already exists for the declaration. |
| 36 | * If one does exist, the returned insertion point may be before or after it. |
| 37 | * |
| 38 | * @param File $phpcsFile The file where the token was found. |
| 39 | * @param int $stackPtr Token position. Must be a T_CLASS, T_INTERFACE, T_TRAIT, T_FUNCTION, T_VARIABLE, or T_CONST. |
| 40 | * @return int Position to insert a doc block before. |
| 41 | * @throws RuntimeException If $stackPtr is not a supported token. |
| 42 | */ |
| 43 | public static function findDocBlockInsertionPointForDeclaration( File $phpcsFile, $stackPtr ) { |
| 44 | $valid = Tokens::tokensPreceedingDeclaration( $phpcsFile, $stackPtr ); |
| 45 | |
| 46 | // Find the start of the declaration. |
| 47 | $idx = Navigation::findStartOfRun( $phpcsFile, $valid, $stackPtr - 1 ); |
| 48 | if ( $idx === false ) { |
| 49 | // Nothing relevant before it, so insert before the declaration token itself. |
| 50 | return $stackPtr; |
| 51 | } |
| 52 | |
| 53 | // Move forward past any leading whitespace or comments. Probably not really part of the declaration. |
| 54 | $idx2 = $phpcsFile->findNext( PHPCS_Tokens::$emptyTokens, $idx, $stackPtr + 1, true ); |
| 55 | return $idx2 === false ? $idx : $idx2; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Get tags in a doc comment. |
| 60 | * |
| 61 | * @param File $phpcsFile The file where the token was found. |
| 62 | * @param int $stackPtr T_DOC_COMMENT_OPEN_TAG token position. |
| 63 | * @return array{name:string,content:string,ptr:int,startptr:int,endptr:int}[] Array of tags from the comment. |
| 64 | * - name: (string) Tag name, e.g. `@param`. |
| 65 | * - content: (string) Content of the tag, ignoring any T_DOC_COMMENT_STAR tokens. Whitespace is trimmed. |
| 66 | * - ptr: (int) Location of the T_DOC_COMMENT_TAG token for the tag. |
| 67 | * - startptr: (int) Location of the first token for the tag. |
| 68 | * - endptr: (int) Location of the last token for the tag. |
| 69 | * @throws RuntimeException If $stackPtr is not a T_DOC_COMMENT_OPEN_TAG. |
| 70 | */ |
| 71 | public static function getCommentTags( File $phpcsFile, $stackPtr ) { |
| 72 | $tokens = $phpcsFile->getTokens(); |
| 73 | if ( $tokens[ $stackPtr ]['code'] !== T_DOC_COMMENT_OPEN_TAG ) { |
| 74 | throw new RuntimeException( '$stackPtr must be of type T_DOC_COMMENT_OPEN_TAG' ); |
| 75 | } |
| 76 | |
| 77 | $ret = array(); |
| 78 | foreach ( $tokens[ $stackPtr ]['comment_tags'] as $i => $idx ) { |
| 79 | $name = $tokens[ $idx ]['content']; |
| 80 | $end = $tokens[ $stackPtr ]['comment_tags'][ $i + 1 ] ?? $tokens[ $stackPtr ]['comment_closer']; |
| 81 | $content = ''; |
| 82 | for ( $j = $idx + 1; $j < $end; $j++ ) { |
| 83 | if ( $tokens[ $j ]['code'] !== T_DOC_COMMENT_STAR ) { |
| 84 | $content .= trim( $tokens[ $j ]['content'], " \t" ); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | $idx2 = Navigation::findPreviousInRun( $phpcsFile, T_DOC_COMMENT_WHITESPACE, array( T_DOC_COMMENT_WHITESPACE, T_DOC_COMMENT_STAR ), $idx - 1, null, "\n" ); |
| 89 | $start = $idx2 === false ? $idx : $idx2 + 1; |
| 90 | |
| 91 | $idx2 = Navigation::findPreviousInRun( $phpcsFile, T_DOC_COMMENT_WHITESPACE, array( T_DOC_COMMENT_WHITESPACE, T_DOC_COMMENT_STAR ), $end - 1, null, "\n" ); |
| 92 | $end = $idx2 === false ? $end - 1 : $idx2; |
| 93 | |
| 94 | $ret[] = array( |
| 95 | 'name' => $name, |
| 96 | 'content' => trim( $content ), |
| 97 | 'ptr' => $idx, |
| 98 | 'startptr' => $start, |
| 99 | 'endptr' => $end, |
| 100 | ); |
| 101 | } |
| 102 | |
| 103 | return $ret; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Get a suggested indent for adding to the doc comment. |
| 108 | * |
| 109 | * Suggested indent includes the one space before the `*` leading a line. |
| 110 | * |
| 111 | * @param File $phpcsFile The file where the token was found. |
| 112 | * @param int $stackPtr T_DOC_COMMENT_OPEN_TAG token position. |
| 113 | * @return string Suggested indentation. |
| 114 | * @throws RuntimeException If $stackPtr is not a T_DOC_COMMENT_OPEN_TAG. |
| 115 | */ |
| 116 | public static function getIndent( File $phpcsFile, $stackPtr ) { |
| 117 | $tokens = $phpcsFile->getTokens(); |
| 118 | if ( $tokens[ $stackPtr ]['code'] !== T_DOC_COMMENT_OPEN_TAG ) { |
| 119 | throw new RuntimeException( '$stackPtr must be of type T_DOC_COMMENT_OPEN_TAG' ); |
| 120 | } |
| 121 | |
| 122 | // If we can, read the indent of the first T_DOC_COMMENT_STAR. Otherwise try reading the indent of the T_DOC_COMMENT_OPEN_TAG itself and add a space. |
| 123 | $idx = $phpcsFile->findNext( T_DOC_COMMENT_STAR, $stackPtr, $tokens[ $stackPtr ]['comment_closer'] ); |
| 124 | $extra = ''; |
| 125 | if ( $idx === false ) { |
| 126 | $idx = $stackPtr; |
| 127 | $extra = ' '; |
| 128 | } |
| 129 | |
| 130 | $line = $tokens[ $idx ]['line']; |
| 131 | $ret = ''; |
| 132 | while ( --$idx >= 0 && $tokens[ $idx ]['line'] === $line ) { |
| 133 | if ( $tokens[ $idx ]['code'] === T_DOC_COMMENT_WHITESPACE || $tokens[ $idx ]['code'] === T_WHITESPACE ) { |
| 134 | $ret = ( $tokens[ $idx ]['orig_content'] ?? $tokens[ $idx ]['content'] ) . $ret; |
| 135 | } else { |
| 136 | $ret = str_repeat( ' ', strlen( $tokens[ $idx ]['content'] ) ) . $ret; |
| 137 | } |
| 138 | } |
| 139 | return $ret . $extra; |
| 140 | } |
| 141 | } |