ascii prototype

ASCII.swift

public struct ASCII: Equatable, Comparable {
    public var codePoint: UInt8
    @inlinable public init(_ v: UInt8) { self.codePoint = v }
}

extension ASCII {
    // Homogenous comparisons.
    @inlinable public static func < (lhs: ASCII, rhs: ASCII) -> Bool {
        lhs.codePoint < rhs.codePoint
    }

    // Heterogeneous equality.
    // - UInt8.
    @inlinable public static func == (lhs: UInt8, rhs: ASCII) -> Bool {
        lhs == rhs.codePoint
    }
    @inlinable public static func != (lhs: UInt8, rhs: ASCII) -> Bool {
        !(lhs == rhs)
    }
    @inlinable public static func ~= (pattern: UInt8, value: ASCII) -> Bool {
        pattern == value.codePoint
    }
    @inlinable public static func ~= (pattern: ASCII, value: UInt8) -> Bool {
        value == pattern.codePoint
    }
    // - Character.
    @inlinable public static func == (lhs: Character, rhs: ASCII) -> Bool {
        lhs.asciiValue.map { $0 == rhs } ?? false
    }
    @inlinable public static func != (lhs: Character, rhs: ASCII) -> Bool {
        !(lhs == rhs)
    }
    @inlinable public static func ~= (pattern: Character, value: ASCII) -> Bool {
        pattern == value
    }
    @inlinable public static func ~= (pattern: ASCII, value: Character) -> Bool {
        value == pattern
    }
    // - Character?
    @inlinable  public static func == (lhs: Character?, rhs: ASCII) -> Bool {
        lhs?.asciiValue.map { $0 == rhs } ?? false
    }
    @inlinable public static func != (lhs: Character?, rhs: ASCII) -> Bool {
        !(lhs == rhs)
    }
    @inlinable public static func ~= (pattern: Character?, value: ASCII) -> Bool {
        pattern == value
    }
    @inlinable public static func ~= (pattern: ASCII, value: Character?) -> Bool {
        value == pattern
    }
}

extension Character {
    @inlinable public init(_ ascii: ASCII) {
        self.init(Unicode.Scalar(ascii.codePoint))
    }
}

public extension ASCII {
    // Control Characters.
    @inlinable static var null                  : ASCII { ASCII(0x00) }
    @inlinable static var startOfHeading        : ASCII { ASCII(0x01) }
    @inlinable static var startOfText           : ASCII { ASCII(0x02) }
    @inlinable static var endOfText             : ASCII { ASCII(0x03) }
    @inlinable static var endOfTransmission     : ASCII { ASCII(0x04) }
    @inlinable static var enquiry               : ASCII { ASCII(0x05) }
    @inlinable static var acknowledge           : ASCII { ASCII(0x06) }
    @inlinable static var bell                  : ASCII { ASCII(0x07) }
    @inlinable static var backspace             : ASCII { ASCII(0x08) }
    @inlinable static var horizontalTab         : ASCII { ASCII(0x09) }
    @inlinable static var lineFeed              : ASCII { ASCII(0x0A) }
    @inlinable static var verticalTab           : ASCII { ASCII(0x0B) }
    @inlinable static var formFeed              : ASCII { ASCII(0x0C) }
    @inlinable static var carriageReturn        : ASCII { ASCII(0x0D) }
    @inlinable static var shiftOut              : ASCII { ASCII(0x0E) }
    @inlinable static var shiftIn               : ASCII { ASCII(0x0F) }
    @inlinable static var dataLinkEscape        : ASCII { ASCII(0x10) }
    @inlinable static var deviceControl1        : ASCII { ASCII(0x11) }
    @inlinable static var deviceControl2        : ASCII { ASCII(0x12) }
    @inlinable static var deviceControl3        : ASCII { ASCII(0x13) }
    @inlinable static var deviceControl4        : ASCII { ASCII(0x14) }
    @inlinable static var negativeAcknowledge   : ASCII { ASCII(0x15) }
    @inlinable static var synchronousIdle       : ASCII { ASCII(0x16) }
    @inlinable static var endOfTransmissionBlock: ASCII { ASCII(0x17) }
    @inlinable static var cancel                : ASCII { ASCII(0x18) }
    @inlinable static var endOfMedium           : ASCII { ASCII(0x19) }
    @inlinable static var substitute            : ASCII { ASCII(0x1A) }
    @inlinable static var escape                : ASCII { ASCII(0x1B) }
    @inlinable static var fileSeparator         : ASCII { ASCII(0x1C) }
    @inlinable static var groupSeparator        : ASCII { ASCII(0x1D) }
    @inlinable static var recordSeparator       : ASCII { ASCII(0x1E) }
    @inlinable static var unitSeparator         : ASCII { ASCII(0x1F) }
    // Special Characters.
    @inlinable static var space              : ASCII { ASCII(0x20) }
    @inlinable static var exclamationMark    : ASCII { ASCII(0x21) }
    @inlinable static var doubleQuotationMark: ASCII { ASCII(0x22) }
    @inlinable static var numberSign         : ASCII { ASCII(0x23) }
    @inlinable static var dollarSign         : ASCII { ASCII(0x24) }
    @inlinable static var percentSign        : ASCII { ASCII(0x25) }
    @inlinable static var ampersand          : ASCII { ASCII(0x26) }
    @inlinable static var apostrophe         : ASCII { ASCII(0x27) }
    @inlinable static var leftParenthesis    : ASCII { ASCII(0x28) }
    @inlinable static var rightParenthesis   : ASCII { ASCII(0x29) }
    @inlinable static var asterisk           : ASCII { ASCII(0x2A) }
    @inlinable static var plus               : ASCII { ASCII(0x2B) }
    @inlinable static var comma              : ASCII { ASCII(0x2C) }
    @inlinable static var minus              : ASCII { ASCII(0x2D) }
    @inlinable static var period             : ASCII { ASCII(0x2E) }
    @inlinable static var forwardSlash       : ASCII { ASCII(0x2F) }
    // Numbers.
    @inlinable static var n0: ASCII { ASCII(0x30) }
    @inlinable static var n1: ASCII { ASCII(0x31) }
    @inlinable static var n2: ASCII { ASCII(0x32) }
    @inlinable static var n3: ASCII { ASCII(0x33) }
    @inlinable static var n4: ASCII { ASCII(0x34) }
    @inlinable static var n5: ASCII { ASCII(0x35) }
    @inlinable static var n6: ASCII { ASCII(0x36) }
    @inlinable static var n7: ASCII { ASCII(0x37) }
    @inlinable static var n8: ASCII { ASCII(0x38) }
    @inlinable static var n9: ASCII { ASCII(0x39) }
    // Some punctuation.
    @inlinable static var colon          : ASCII { ASCII(0x3A) }
    @inlinable static var semicolon      : ASCII { ASCII(0x3B) }
    @inlinable static var lessThanSign   : ASCII { ASCII(0x3C) }
    @inlinable static var equalSign      : ASCII { ASCII(0x3D) }
    @inlinable static var greaterThanSign: ASCII { ASCII(0x3E) }
    @inlinable static var questionMark   : ASCII { ASCII(0x3F) }
    @inlinable static var commercialAt   : ASCII { ASCII(0x40) }
    // Upper-case letters.
    @inlinable static var A: ASCII { ASCII(0x41) }
    @inlinable static var B: ASCII { ASCII(0x42) }
    @inlinable static var C: ASCII { ASCII(0x43) }
    @inlinable static var D: ASCII { ASCII(0x44) }
    @inlinable static var E: ASCII { ASCII(0x45) }
    @inlinable static var F: ASCII { ASCII(0x46) }
    @inlinable static var G: ASCII { ASCII(0x47) }
    @inlinable static var H: ASCII { ASCII(0x48) }
    @inlinable static var I: ASCII { ASCII(0x49) }
    @inlinable static var J: ASCII { ASCII(0x4A) }
    @inlinable static var K: ASCII { ASCII(0x4B) }
    @inlinable static var L: ASCII { ASCII(0x4C) }
    @inlinable static var M: ASCII { ASCII(0x4D) }
    @inlinable static var N: ASCII { ASCII(0x4E) }
    @inlinable static var O: ASCII { ASCII(0x4F) }
    @inlinable static var P: ASCII { ASCII(0x50) }
    @inlinable static var Q: ASCII { ASCII(0x51) }
    @inlinable static var R: ASCII { ASCII(0x52) }
    @inlinable static var S: ASCII { ASCII(0x53) }
    @inlinable static var T: ASCII { ASCII(0x54) }
    @inlinable static var U: ASCII { ASCII(0x55) }
    @inlinable static var V: ASCII { ASCII(0x56) }
    @inlinable static var W: ASCII { ASCII(0x57) }
    @inlinable static var X: ASCII { ASCII(0x58) }
    @inlinable static var Y: ASCII { ASCII(0x59) }
    @inlinable static var Z: ASCII { ASCII(0x5A) }
    // More special characters.
    @inlinable static var leftSquareBracket : ASCII { ASCII(0x5B) }
    @inlinable static var backslash         : ASCII { ASCII(0x5C) }
    @inlinable static var rightSquareBracket: ASCII { ASCII(0x5D) }
    @inlinable static var circumflexAccent  : ASCII { ASCII(0x5E) }
    @inlinable static var underscore        : ASCII { ASCII(0x5F) }
    @inlinable static var backtick          : ASCII { ASCII(0x60) }
    // Lower-case letters.
    @inlinable static var a: ASCII { ASCII(0x61) }
    @inlinable static var b: ASCII { ASCII(0x62) }
    @inlinable static var c: ASCII { ASCII(0x63) }
    @inlinable static var d: ASCII { ASCII(0x64) }
    @inlinable static var e: ASCII { ASCII(0x65) }
    @inlinable static var f: ASCII { ASCII(0x66) }
    @inlinable static var g: ASCII { ASCII(0x67) }
    @inlinable static var h: ASCII { ASCII(0x68) }
    @inlinable static var i: ASCII { ASCII(0x69) }
    @inlinable static var j: ASCII { ASCII(0x6A) }
    @inlinable static var k: ASCII { ASCII(0x6B) }
    @inlinable static var l: ASCII { ASCII(0x6C) }
    @inlinable static var m: ASCII { ASCII(0x6D) }
    @inlinable static var n: ASCII { ASCII(0x6E) }
    @inlinable static var o: ASCII { ASCII(0x6F) }
    @inlinable static var p: ASCII { ASCII(0x70) }
    @inlinable static var q: ASCII { ASCII(0x71) }
    @inlinable static var r: ASCII { ASCII(0x72) }
    @inlinable static var s: ASCII { ASCII(0x73) }
    @inlinable static var t: ASCII { ASCII(0x74) }
    @inlinable static var u: ASCII { ASCII(0x75) }
    @inlinable static var v: ASCII { ASCII(0x76) }
    @inlinable static var w: ASCII { ASCII(0x77) }
    @inlinable static var x: ASCII { ASCII(0x78) }
    @inlinable static var y: ASCII { ASCII(0x79) }
    @inlinable static var z: ASCII { ASCII(0x7A) }
    // More special characters.
    @inlinable static var leftCurlyBracket : ASCII { ASCII(0x7B) }
    @inlinable static var verticalBar      : ASCII { ASCII(0x7C) }
    @inlinable static var rightCurlyBracket: ASCII { ASCII(0x7D) }
    @inlinable static var tilde            : ASCII { ASCII(0x7E) }
    @inlinable static var delete           : ASCII { ASCII(0x7F) }
}

extension ASCII {
    struct Ranges {
        var controlCharacters: Range<ASCII> { ASCII(0x00)..<ASCII(0x20) }
        var specialCharacters: Range<ASCII> { ASCII(0x20)..<ASCII(0x30) }
        var digits           : Range<ASCII> { ASCII(0x30)..<ASCII(0x3A) }
        var uppercaseAlpha   : Range<ASCII> { ASCII(0x41)..<ASCII(0x5B) }
        var lowercaseAlpha   : Range<ASCII> { ASCII(0x61)..<ASCII(0x7B) }

        func isAlpha(_ char: Character) -> Bool {
            uppercaseAlpha.contains(char) || lowercaseAlpha.contains(char) 
        }
        func isAlphaNumeric(_ char: Character) -> Bool {
            isAlpha(char) || digits.contains(char)
        }
    }

    static var ranges: Ranges { Ranges() }
}

extension Range where Bound == ASCII {
    public func contains(_ char: Character) -> Bool {
        char.asciiValue.map { self.contains(ASCII($0)) } ?? false
    }
}

extension ClosedRange where Bound == ASCII {
    public func contains(_ char: Character) -> Bool {
        char.asciiValue.map { self.contains(ASCII($0)) } ?? false
    }
}