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/*
Language: Swift
Description: Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns.
Author: Chris Eidhof <chris@eidhof.nl>
Contributors: Nate Cook <natecook@gmail.com>, Alexander Lichter <manniL@gmx.net>
Website: https://swift.org
Category: common, system
*/
function swift(hljs) {
var SWIFT_KEYWORDS = {
// override the pattern since the default of of /\w+/ is not sufficient to
// capture the keywords that start with the character "#"
$pattern: /[\w#]+/,
keyword: '#available #colorLiteral #column #else #elseif #endif #file ' +
'#fileLiteral #function #if #imageLiteral #line #selector #sourceLocation ' +
'_ __COLUMN__ __FILE__ __FUNCTION__ __LINE__ Any as as! as? associatedtype ' +
'associativity break case catch class continue convenience default defer deinit didSet do ' +
'dynamic dynamicType else enum extension fallthrough false fileprivate final for func ' +
'get guard if import in indirect infix init inout internal is lazy left let ' +
'mutating nil none nonmutating open operator optional override postfix precedence ' +
'prefix private protocol Protocol public repeat required rethrows return ' +
'right self Self set some static struct subscript super switch throw throws true ' +
'try try! try? Type typealias unowned var weak where while willSet',
literal: 'true false nil',
built_in: 'abs advance alignof alignofValue anyGenerator assert assertionFailure ' +
'bridgeFromObjectiveC bridgeFromObjectiveCUnconditional bridgeToObjectiveC ' +
'bridgeToObjectiveCUnconditional c compactMap contains count countElements countLeadingZeros ' +
'debugPrint debugPrintln distance dropFirst dropLast dump encodeBitsAsWords ' +
'enumerate equal fatalError filter find getBridgedObjectiveCType getVaList ' +
'indices insertionSort isBridgedToObjectiveC isBridgedVerbatimToObjectiveC ' +
'isUniquelyReferenced isUniquelyReferencedNonObjC join lazy lexicographicalCompare ' +
'map max maxElement min minElement numericCast overlaps partition posix ' +
'precondition preconditionFailure print println quickSort readLine reduce reflect ' +
'reinterpretCast reverse roundUpToAlignment sizeof sizeofValue sort split ' +
'startsWith stride strideof strideofValue swap toString transcode ' +
'underestimateCount unsafeAddressOf unsafeBitCast unsafeDowncast unsafeUnwrap ' +
'unsafeReflect withExtendedLifetime withObjectAtPlusZero withUnsafePointer ' +
'withUnsafePointerToObject withUnsafeMutablePointer withUnsafeMutablePointers ' +
'withUnsafePointer withUnsafePointers withVaList zip'
};
var TYPE = {
className: 'type',
begin: '\\b[A-Z][\\w\u00C0-\u02B8\']*',
relevance: 0
};
// slightly more special to swift
var OPTIONAL_USING_TYPE = {
className: 'type',
begin: '\\b[A-Z][\\w\u00C0-\u02B8\']*[!?]'
};
var BLOCK_COMMENT = hljs.COMMENT(
'/\\*',
'\\*/',
{
contains: ['self']
}
);
var SUBST = {
className: 'subst',
begin: /\\\(/, end: '\\)',
keywords: SWIFT_KEYWORDS,
contains: [] // assigned later
};
var STRING = {
className: 'string',
contains: [hljs.BACKSLASH_ESCAPE, SUBST],
variants: [
{begin: /"""/, end: /"""/},
{begin: /"/, end: /"/},
]
};
// https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#grammar_numeric-literal
// TODO: Update for leading `-` after lookbehind is supported everywhere
var decimalDigits = '([0-9]_*)+';
var hexDigits = '([0-9a-fA-F]_*)+';
var NUMBER = {
className: 'number',
relevance: 0,
variants: [
// decimal floating-point-literal (subsumes decimal-literal)
{ begin: `\\b(${decimalDigits})(\\.(${decimalDigits}))?` +
`([eE][+-]?(${decimalDigits}))?\\b` },
// hexadecimal floating-point-literal (subsumes hexadecimal-literal)
{ begin: `\\b0x(${hexDigits})(\\.(${hexDigits}))?` +
`([pP][+-]?(${decimalDigits}))?\\b` },
// octal-literal
{ begin: /\b0o([0-7]_*)+\b/ },
// binary-literal
{ begin: /\b0b([01]_*)+\b/ },
]
};
SUBST.contains = [NUMBER];
return {
name: 'Swift',
keywords: SWIFT_KEYWORDS,
contains: [
STRING,
hljs.C_LINE_COMMENT_MODE,
BLOCK_COMMENT,
OPTIONAL_USING_TYPE,
TYPE,
NUMBER,
{
className: 'function',
beginKeywords: 'func', end: /\{/, excludeEnd: true,
contains: [
hljs.inherit(hljs.TITLE_MODE, {
begin: /[A-Za-z$_][0-9A-Za-z$_]*/
}),
{
begin: /</, end: />/
},
{
className: 'params',
begin: /\(/, end: /\)/, endsParent: true,
keywords: SWIFT_KEYWORDS,
contains: [
'self',
NUMBER,
STRING,
hljs.C_BLOCK_COMMENT_MODE,
{begin: ':'} // relevance booster
],
illegal: /["']/
}
],
illegal: /\[|%/
},
{
className: 'class',
beginKeywords: 'struct protocol class extension enum',
keywords: SWIFT_KEYWORDS,
end: '\\{',
excludeEnd: true,
contains: [
hljs.inherit(hljs.TITLE_MODE, {begin: /[A-Za-z$_][\u00C0-\u02B80-9A-Za-z$_]*/})
]
},
{
className: 'meta', // @attributes
begin: '(@discardableResult|@warn_unused_result|@exported|@lazy|@noescape|' +
'@NSCopying|@NSManaged|@objc|@objcMembers|@convention|@required|' +
'@noreturn|@IBAction|@IBDesignable|@IBInspectable|@IBOutlet|' +
'@infix|@prefix|@postfix|@autoclosure|@testable|@available|' +
'@nonobjc|@NSApplicationMain|@UIApplicationMain|@dynamicMemberLookup|' +
'@propertyWrapper|@main)\\b'
},
{
beginKeywords: 'import', end: /$/,
contains: [hljs.C_LINE_COMMENT_MODE, BLOCK_COMMENT],
relevance: 0
}
]
};
}
module.exports = swift;