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name : objective.py
 """
    pygments.lexers.objective
    ~~~~~~~~~~~~~~~~~~~~~~~~~

    Lexers for Objective-C family languages.

    :copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import re

from pygments.lexer import RegexLexer, include, bygroups, using, this, words, \
    inherit, default
from pygments.token import Text, Keyword, Name, String, Operator, \
    Number, Punctuation, Literal, Comment

from pygments.lexers.c_cpp import CLexer, CppLexer

__all__ = ['ObjectiveCLexer', 'ObjectiveCppLexer', 'LogosLexer', 'SwiftLexer']


def objective(baselexer):
    """
    Generate a subclass of baselexer that accepts the Objective-C syntax
    extensions.
    """

    # Have to be careful not to accidentally match JavaDoc/Doxygen syntax here,
    # since that's quite common in ordinary C/C++ files.  It's OK to match
    # JavaDoc/Doxygen keywords that only apply to Objective-C, mind.
    #
    # The upshot of this is that we CANNOT match @class or @interface
    _oc_keywords = re.compile(r'@(?:end|implementation|protocol)')

    # Matches [ <ws>? identifier <ws> ( identifier <ws>? ] |  identifier? : )
    # (note the identifier is *optional* when there is a ':'!)
    _oc_message = re.compile(r'\[\s*[a-zA-Z_]\w*\s+'
                             r'(?:[a-zA-Z_]\w*\s*\]|'
                             r'(?:[a-zA-Z_]\w*)?:)')

    class GeneratedObjectiveCVariant(baselexer):
        """
        Implements Objective-C syntax on top of an existing C family lexer.
        """

        tokens = {
            'statements': [
                (r'@"', String, 'string'),
                (r'@(YES|NO)', Number),
                (r"@'(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])'", String.Char),
                (r'@(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[lL]?', Number.Float),
                (r'@(\d+\.\d*|\.\d+|\d+[fF])[fF]?', Number.Float),
                (r'@0x[0-9a-fA-F]+[Ll]?', Number.Hex),
                (r'@0[0-7]+[Ll]?', Number.Oct),
                (r'@\d+[Ll]?', Number.Integer),
                (r'@\(', Literal, 'literal_number'),
                (r'@\[', Literal, 'literal_array'),
                (r'@\{', Literal, 'literal_dictionary'),
                (words((
                    '@selector', '@private', '@protected', '@public', '@encode',
                    '@synchronized', '@try', '@throw', '@catch', '@finally',
                    '@end', '@property', '@synthesize', '__bridge', '__bridge_transfer',
                    '__autoreleasing', '__block', '__weak', '__strong', 'weak', 'strong',
                    'copy', 'retain', 'assign', 'unsafe_unretained', 'atomic', 'nonatomic',
                    'readonly', 'readwrite', 'setter', 'getter', 'typeof', 'in',
                    'out', 'inout', 'release', 'class', '@dynamic', '@optional',
                    '@required', '@autoreleasepool', '@import'), suffix=r'\b'),
                 Keyword),
                (words(('id', 'instancetype', 'Class', 'IMP', 'SEL', 'BOOL',
                        'IBOutlet', 'IBAction', 'unichar'), suffix=r'\b'),
                 Keyword.Type),
                (r'@(true|false|YES|NO)\n', Name.Builtin),
                (r'(YES|NO|nil|self|super)\b', Name.Builtin),
                # Carbon types
                (r'(Boolean|UInt8|SInt8|UInt16|SInt16|UInt32|SInt32)\b', Keyword.Type),
                # Carbon built-ins
                (r'(TRUE|FALSE)\b', Name.Builtin),
                (r'(@interface|@implementation)(\s+)', bygroups(Keyword, Text),
                 ('#pop', 'oc_classname')),
                (r'(@class|@protocol)(\s+)', bygroups(Keyword, Text),
                 ('#pop', 'oc_forward_classname')),
                # @ can also prefix other expressions like @{...} or @(...)
                (r'@', Punctuation),
                inherit,
            ],
            'oc_classname': [
                # interface definition that inherits
                (r'([a-zA-Z$_][\w$]*)(\s*:\s*)([a-zA-Z$_][\w$]*)?(\s*)(\{)',
                 bygroups(Name.Class, Text, Name.Class, Text, Punctuation),
                 ('#pop', 'oc_ivars')),
                (r'([a-zA-Z$_][\w$]*)(\s*:\s*)([a-zA-Z$_][\w$]*)?',
                 bygroups(Name.Class, Text, Name.Class), '#pop'),
                # interface definition for a category
                (r'([a-zA-Z$_][\w$]*)(\s*)(\([a-zA-Z$_][\w$]*\))(\s*)(\{)',
                 bygroups(Name.Class, Text, Name.Label, Text, Punctuation),
                 ('#pop', 'oc_ivars')),
                (r'([a-zA-Z$_][\w$]*)(\s*)(\([a-zA-Z$_][\w$]*\))',
                 bygroups(Name.Class, Text, Name.Label), '#pop'),
                # simple interface / implementation
                (r'([a-zA-Z$_][\w$]*)(\s*)(\{)',
                 bygroups(Name.Class, Text, Punctuation), ('#pop', 'oc_ivars')),
                (r'([a-zA-Z$_][\w$]*)', Name.Class, '#pop')
            ],
            'oc_forward_classname': [
                (r'([a-zA-Z$_][\w$]*)(\s*,\s*)',
                 bygroups(Name.Class, Text), 'oc_forward_classname'),
                (r'([a-zA-Z$_][\w$]*)(\s*;?)',
                 bygroups(Name.Class, Text), '#pop')
            ],
            'oc_ivars': [
                include('whitespace'),
                include('statements'),
                (';', Punctuation),
                (r'\{', Punctuation, '#push'),
                (r'\}', Punctuation, '#pop'),
            ],
            'root': [
                # methods
                (r'^([-+])(\s*)'                         # method marker
                 r'(\(.*?\))?(\s*)'                      # return type
                 r'([a-zA-Z$_][\w$]*:?)',        # begin of method name
                 bygroups(Punctuation, Text, using(this),
                          Text, Name.Function),
                 'method'),
                inherit,
            ],
            'method': [
                include('whitespace'),
                # TODO unsure if ellipses are allowed elsewhere, see
                # discussion in Issue 789
                (r',', Punctuation),
                (r'\.\.\.', Punctuation),
                (r'(\(.*?\))(\s*)([a-zA-Z$_][\w$]*)',
                 bygroups(using(this), Text, Name.Variable)),
                (r'[a-zA-Z$_][\w$]*:', Name.Function),
                (';', Punctuation, '#pop'),
                (r'\{', Punctuation, 'function'),
                default('#pop'),
            ],
            'literal_number': [
                (r'\(', Punctuation, 'literal_number_inner'),
                (r'\)', Literal, '#pop'),
                include('statement'),
            ],
            'literal_number_inner': [
                (r'\(', Punctuation, '#push'),
                (r'\)', Punctuation, '#pop'),
                include('statement'),
            ],
            'literal_array': [
                (r'\[', Punctuation, 'literal_array_inner'),
                (r'\]', Literal, '#pop'),
                include('statement'),
            ],
            'literal_array_inner': [
                (r'\[', Punctuation, '#push'),
                (r'\]', Punctuation, '#pop'),
                include('statement'),
            ],
            'literal_dictionary': [
                (r'\}', Literal, '#pop'),
                include('statement'),
            ],
        }

        def analyse_text(text):
            if _oc_keywords.search(text):
                return 1.0
            elif '@"' in text:  # strings
                return 0.8
            elif re.search('@[0-9]+', text):
                return 0.7
            elif _oc_message.search(text):
                return 0.8
            return 0

        def get_tokens_unprocessed(self, text, stack=('root',)):
            from pygments.lexers._cocoa_builtins import COCOA_INTERFACES, \
                COCOA_PROTOCOLS, COCOA_PRIMITIVES

            for index, token, value in \
                    baselexer.get_tokens_unprocessed(self, text, stack):
                if token is Name or token is Name.Class:
                    if value in COCOA_INTERFACES or value in COCOA_PROTOCOLS \
                       or value in COCOA_PRIMITIVES:
                        token = Name.Builtin.Pseudo

                yield index, token, value

    return GeneratedObjectiveCVariant


class ObjectiveCLexer(objective(CLexer)):
    """
    For Objective-C source code with preprocessor directives.
    """

    name = 'Objective-C'
    url = 'https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/Introduction/Introduction.html'
    aliases = ['objective-c', 'objectivec', 'obj-c', 'objc']
    filenames = ['*.m', '*.h']
    mimetypes = ['text/x-objective-c']
    priority = 0.05    # Lower than C


class ObjectiveCppLexer(objective(CppLexer)):
    """
    For Objective-C++ source code with preprocessor directives.
    """

    name = 'Objective-C++'
    aliases = ['objective-c++', 'objectivec++', 'obj-c++', 'objc++']
    filenames = ['*.mm', '*.hh']
    mimetypes = ['text/x-objective-c++']
    priority = 0.05    # Lower than C++


class LogosLexer(ObjectiveCppLexer):
    """
    For Logos + Objective-C source code with preprocessor directives.

    .. versionadded:: 1.6
    """

    name = 'Logos'
    aliases = ['logos']
    filenames = ['*.x', '*.xi', '*.xm', '*.xmi']
    mimetypes = ['text/x-logos']
    priority = 0.25

    tokens = {
        'statements': [
            (r'(%orig|%log)\b', Keyword),
            (r'(%c)\b(\()(\s*)([a-zA-Z$_][\w$]*)(\s*)(\))',
             bygroups(Keyword, Punctuation, Text, Name.Class, Text, Punctuation)),
            (r'(%init)\b(\()',
             bygroups(Keyword, Punctuation), 'logos_init_directive'),
            (r'(%init)(?=\s*;)', bygroups(Keyword)),
            (r'(%hook|%group)(\s+)([a-zA-Z$_][\w$]+)',
             bygroups(Keyword, Text, Name.Class), '#pop'),
            (r'(%subclass)(\s+)', bygroups(Keyword, Text),
             ('#pop', 'logos_classname')),
            inherit,
        ],
        'logos_init_directive': [
            (r'\s+', Text),
            (',', Punctuation, ('logos_init_directive', '#pop')),
            (r'([a-zA-Z$_][\w$]*)(\s*)(=)(\s*)([^);]*)',
             bygroups(Name.Class, Text, Punctuation, Text, Text)),
            (r'([a-zA-Z$_][\w$]*)', Name.Class),
            (r'\)', Punctuation, '#pop'),
        ],
        'logos_classname': [
            (r'([a-zA-Z$_][\w$]*)(\s*:\s*)([a-zA-Z$_][\w$]*)?',
             bygroups(Name.Class, Text, Name.Class), '#pop'),
            (r'([a-zA-Z$_][\w$]*)', Name.Class, '#pop')
        ],
        'root': [
            (r'(%subclass)(\s+)', bygroups(Keyword, Text),
             'logos_classname'),
            (r'(%hook|%group)(\s+)([a-zA-Z$_][\w$]+)',
             bygroups(Keyword, Text, Name.Class)),
            (r'(%config)(\s*\(\s*)(\w+)(\s*=)(.*?)(\)\s*)',
             bygroups(Keyword, Text, Name.Variable, Text, String, Text)),
            (r'(%ctor)(\s*)(\{)', bygroups(Keyword, Text, Punctuation),
             'function'),
            (r'(%new)(\s*)(\()(.*?)(\))',
             bygroups(Keyword, Text, Keyword, String, Keyword)),
            (r'(\s*)(%end)(\s*)', bygroups(Text, Keyword, Text)),
            inherit,
        ],
    }

    _logos_keywords = re.compile(r'%(?:hook|ctor|init|c\()')

    def analyse_text(text):
        if LogosLexer._logos_keywords.search(text):
            return 1.0
        return 0


class SwiftLexer(RegexLexer):
    """
    For Swift source.

    .. versionadded:: 2.0
    """
    name = 'Swift'
    url = 'https://www.swift.org/'
    filenames = ['*.swift']
    aliases = ['swift']
    mimetypes = ['text/x-swift']

    tokens = {
        'root': [
            # Whitespace and Comments
            (r'\n', Text),
            (r'\s+', Text),
            (r'//', Comment.Single, 'comment-single'),
            (r'/\*', Comment.Multiline, 'comment-multi'),
            (r'#(if|elseif|else|endif|available)\b', Comment.Preproc, 'preproc'),

            # Keywords
            include('keywords'),

            # Global Types
            (words((
                'Array', 'AutoreleasingUnsafeMutablePointer', 'BidirectionalReverseView',
                'Bit', 'Bool', 'CFunctionPointer', 'COpaquePointer', 'CVaListPointer',
                'Character', 'ClosedInterval', 'CollectionOfOne', 'ContiguousArray',
                'Dictionary', 'DictionaryGenerator', 'DictionaryIndex', 'Double',
                'EmptyCollection', 'EmptyGenerator', 'EnumerateGenerator',
                'EnumerateSequence', 'FilterCollectionView',
                'FilterCollectionViewIndex', 'FilterGenerator', 'FilterSequenceView',
                'Float', 'Float80', 'FloatingPointClassification', 'GeneratorOf',
                'GeneratorOfOne', 'GeneratorSequence', 'HalfOpenInterval', 'HeapBuffer',
                'HeapBufferStorage', 'ImplicitlyUnwrappedOptional', 'IndexingGenerator',
                'Int', 'Int16', 'Int32', 'Int64', 'Int8', 'LazyBidirectionalCollection',
                'LazyForwardCollection', 'LazyRandomAccessCollection',
                'LazySequence', 'MapCollectionView', 'MapSequenceGenerator',
                'MapSequenceView', 'MirrorDisposition', 'ObjectIdentifier', 'OnHeap',
                'Optional', 'PermutationGenerator', 'QuickLookObject',
                'RandomAccessReverseView', 'Range', 'RangeGenerator', 'RawByte', 'Repeat',
                'ReverseBidirectionalIndex', 'ReverseRandomAccessIndex', 'SequenceOf',
                'SinkOf', 'Slice', 'StaticString', 'StrideThrough', 'StrideThroughGenerator',
                'StrideTo', 'StrideToGenerator', 'String', 'UInt', 'UInt16', 'UInt32',
                'UInt64', 'UInt8', 'UTF16', 'UTF32', 'UTF8', 'UnicodeDecodingResult',
                'UnicodeScalar', 'Unmanaged', 'UnsafeBufferPointer',
                'UnsafeBufferPointerGenerator', 'UnsafeMutableBufferPointer',
                'UnsafeMutablePointer', 'UnsafePointer', 'Zip2', 'ZipGenerator2',
                # Protocols
                'AbsoluteValuable', 'AnyObject', 'ArrayLiteralConvertible',
                'BidirectionalIndexType', 'BitwiseOperationsType',
                'BooleanLiteralConvertible', 'BooleanType', 'CVarArgType',
                'CollectionType', 'Comparable', 'DebugPrintable',
                'DictionaryLiteralConvertible', 'Equatable',
                'ExtendedGraphemeClusterLiteralConvertible',
                'ExtensibleCollectionType', 'FloatLiteralConvertible',
                'FloatingPointType', 'ForwardIndexType', 'GeneratorType', 'Hashable',
                'IntegerArithmeticType', 'IntegerLiteralConvertible', 'IntegerType',
                'IntervalType', 'MirrorType', 'MutableCollectionType', 'MutableSliceable',
                'NilLiteralConvertible', 'OutputStreamType', 'Printable',
                'RandomAccessIndexType', 'RangeReplaceableCollectionType',
                'RawOptionSetType', 'RawRepresentable', 'Reflectable', 'SequenceType',
                'SignedIntegerType', 'SignedNumberType', 'SinkType', 'Sliceable',
                'Streamable', 'Strideable', 'StringInterpolationConvertible',
                'StringLiteralConvertible', 'UnicodeCodecType',
                'UnicodeScalarLiteralConvertible', 'UnsignedIntegerType',
                '_ArrayBufferType', '_BidirectionalIndexType', '_CocoaStringType',
                '_CollectionType', '_Comparable', '_ExtensibleCollectionType',
                '_ForwardIndexType', '_Incrementable', '_IntegerArithmeticType',
                '_IntegerType', '_ObjectiveCBridgeable', '_RandomAccessIndexType',
                '_RawOptionSetType', '_SequenceType', '_Sequence_Type',
                '_SignedIntegerType', '_SignedNumberType', '_Sliceable', '_Strideable',
                '_SwiftNSArrayRequiredOverridesType', '_SwiftNSArrayType',
                '_SwiftNSCopyingType', '_SwiftNSDictionaryRequiredOverridesType',
                '_SwiftNSDictionaryType', '_SwiftNSEnumeratorType',
                '_SwiftNSFastEnumerationType', '_SwiftNSStringRequiredOverridesType',
                '_SwiftNSStringType', '_UnsignedIntegerType',
                # Variables
                'C_ARGC', 'C_ARGV', 'Process',
                # Typealiases
                'Any', 'AnyClass', 'BooleanLiteralType', 'CBool', 'CChar', 'CChar16',
                'CChar32', 'CDouble', 'CFloat', 'CInt', 'CLong', 'CLongLong', 'CShort',
                'CSignedChar', 'CUnsignedInt', 'CUnsignedLong', 'CUnsignedShort',
                'CWideChar', 'ExtendedGraphemeClusterType', 'Float32', 'Float64',
                'FloatLiteralType', 'IntMax', 'IntegerLiteralType', 'StringLiteralType',
                'UIntMax', 'UWord', 'UnicodeScalarType', 'Void', 'Word',
                # Foundation/Cocoa
                'NSErrorPointer', 'NSObjectProtocol', 'Selector'), suffix=r'\b'),
             Name.Builtin),
            # Functions
            (words((
                'abs', 'advance', 'alignof', 'alignofValue', 'assert', 'assertionFailure',
                'contains', 'count', 'countElements', 'debugPrint', 'debugPrintln',
                'distance', 'dropFirst', 'dropLast', 'dump', 'enumerate', 'equal',
                'extend', 'fatalError', 'filter', 'find', 'first', 'getVaList', 'indices',
                'insert', 'isEmpty', 'join', 'last', 'lazy', 'lexicographicalCompare',
                'map', 'max', 'maxElement', 'min', 'minElement', 'numericCast', 'overlaps',
                'partition', 'precondition', 'preconditionFailure', 'prefix', 'print',
                'println', 'reduce', 'reflect', 'removeAll', 'removeAtIndex', 'removeLast',
                'removeRange', 'reverse', 'sizeof', 'sizeofValue', 'sort', 'sorted',
                'splice', 'split', 'startsWith', 'stride', 'strideof', 'strideofValue',
                'suffix', 'swap', 'toDebugString', 'toString', 'transcode',
                'underestimateCount', 'unsafeAddressOf', 'unsafeBitCast', 'unsafeDowncast',
                'withExtendedLifetime', 'withUnsafeMutablePointer',
                'withUnsafeMutablePointers', 'withUnsafePointer', 'withUnsafePointers',
                'withVaList'), suffix=r'\b'),
             Name.Builtin.Pseudo),

            # Implicit Block Variables
            (r'\$\d+', Name.Variable),

            # Binary Literal
            (r'0b[01_]+', Number.Bin),
            # Octal Literal
            (r'0o[0-7_]+', Number.Oct),
            # Hexadecimal Literal
            (r'0x[0-9a-fA-F_]+', Number.Hex),
            # Decimal Literal
            (r'[0-9][0-9_]*(\.[0-9_]+[eE][+\-]?[0-9_]+|'
             r'\.[0-9_]*|[eE][+\-]?[0-9_]+)', Number.Float),
            (r'[0-9][0-9_]*', Number.Integer),
            # String Literal
            (r'"', String, 'string'),

            # Operators and Punctuation
            (r'[(){}\[\].,:;=@#`?]|->|[<&?](?=\w)|(?<=\w)[>!?]', Punctuation),
            (r'[/=\-+!*%<>&|^?~]+', Operator),

            # Identifier
            (r'[a-zA-Z_]\w*', Name)
        ],
        'keywords': [
            (words((
                'as', 'async', 'await', 'break', 'case', 'catch', 'continue', 'default', 'defer',
                'do', 'else', 'fallthrough', 'for', 'guard', 'if', 'in', 'is',
                'repeat', 'return', '#selector', 'switch', 'throw', 'try',
                'where', 'while'), suffix=r'\b'),
             Keyword),
            (r'@availability\([^)]+\)', Keyword.Reserved),
            (words((
                'associativity', 'convenience', 'dynamic', 'didSet', 'final',
                'get', 'indirect', 'infix', 'inout', 'lazy', 'left', 'mutating',
                'none', 'nonmutating', 'optional', 'override', 'postfix',
                'precedence', 'prefix', 'Protocol', 'required', 'rethrows',
                'right', 'set', 'throws', 'Type', 'unowned', 'weak', 'willSet',
                '@availability', '@autoclosure', '@noreturn',
                '@NSApplicationMain', '@NSCopying', '@NSManaged', '@objc',
                '@UIApplicationMain', '@IBAction', '@IBDesignable',
                '@IBInspectable', '@IBOutlet'), suffix=r'\b'),
             Keyword.Reserved),
            (r'(as|dynamicType|false|is|nil|self|Self|super|true|__COLUMN__'
             r'|__FILE__|__FUNCTION__|__LINE__|_'
             r'|#(?:file|line|column|function))\b', Keyword.Constant),
            (r'import\b', Keyword.Declaration, 'module'),
            (r'(class|enum|extension|struct|protocol)(\s+)([a-zA-Z_]\w*)',
             bygroups(Keyword.Declaration, Text, Name.Class)),
            (r'(func)(\s+)([a-zA-Z_]\w*)',
             bygroups(Keyword.Declaration, Text, Name.Function)),
            (r'(var|let)(\s+)([a-zA-Z_]\w*)', bygroups(Keyword.Declaration,
             Text, Name.Variable)),
            (words((
                'actor', 'associatedtype', 'class', 'deinit', 'enum', 'extension', 'func', 'import',
                'init', 'internal', 'let', 'operator', 'private', 'protocol', 'public',
                'static', 'struct', 'subscript', 'typealias', 'var'), suffix=r'\b'),
             Keyword.Declaration)
        ],
        'comment': [
            (r':param: [a-zA-Z_]\w*|:returns?:|(FIXME|MARK|TODO):',
             Comment.Special)
        ],

        # Nested
        'comment-single': [
            (r'\n', Text, '#pop'),
            include('comment'),
            (r'[^\n]', Comment.Single)
        ],
        'comment-multi': [
            include('comment'),
            (r'[^*/]', Comment.Multiline),
            (r'/\*', Comment.Multiline, '#push'),
            (r'\*/', Comment.Multiline, '#pop'),
            (r'[*/]', Comment.Multiline)
        ],
        'module': [
            (r'\n', Text, '#pop'),
            (r'[a-zA-Z_]\w*', Name.Class),
            include('root')
        ],
        'preproc': [
            (r'\n', Text, '#pop'),
            include('keywords'),
            (r'[A-Za-z]\w*', Comment.Preproc),
            include('root')
        ],
        'string': [
            (r'\\\(', String.Interpol, 'string-intp'),
            (r'"', String, '#pop'),
            (r"""\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\[0-7]{1,3}"""
             r"""|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}""", String.Escape),
            (r'[^\\"]+', String),
            (r'\\', String)
        ],
        'string-intp': [
            (r'\(', String.Interpol, '#push'),
            (r'\)', String.Interpol, '#pop'),
            include('root')
        ]
    }

    def get_tokens_unprocessed(self, text):
        from pygments.lexers._cocoa_builtins import COCOA_INTERFACES, \
            COCOA_PROTOCOLS, COCOA_PRIMITIVES

        for index, token, value in \
                RegexLexer.get_tokens_unprocessed(self, text):
            if token is Name or token is Name.Class:
                if value in COCOA_INTERFACES or value in COCOA_PROTOCOLS \
                   or value in COCOA_PRIMITIVES:
                    token = Name.Builtin.Pseudo

            yield index, token, value
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