Appendix: Token Reference

The following table lists every token kind recognized by the Rux lexer.

Literals

Token	Example
`IntLiteral`	`42`, `0xFF`, `0b1010`, `0o77`
`FloatLiteral`	`3.14`, `1.0e-9`
`StringLiteral`	`"hello"`
`CharLiteral`	`'A'`, `'\n'`
`BoolLiteral`	`true`, `false`

Identifiers

Token	Description
`Identifier`	Any non-keyword name

Keywords

Token	Spelling
`IfKeyword`	`if`
`ElseKeyword`	`else`
`WhileKeyword`	`while`
`ForKeyword`	`for`
`InKeyword`	`in`
`BreakKeyword`	`break`
`ContinueKeyword`	`continue`
`ReturnKeyword`	`return`
`MatchKeyword`	`match`
`FuncKeyword`	`func`
`LetKeyword`	`let`
`MutKeyword`	`mut`
`ConstKeyword`	`const`
`TypeKeyword`	`type`
`StructKeyword`	`struct`
`EnumKeyword`	`enum`
`UnionKeyword`	`union`
`InterfaceKeyword`	`interface`
`ImplKeyword`	`impl`
`ModKeyword`	`mod`
`UseKeyword`	`use`
`PubKeyword`	`pub`
`ExternKeyword`	`extern`
`AsKeyword`	`as`
`IsKeyword`	`is`
`NullKeyword`	`null`
`SelfKeyword`	`self`
`SuperKeyword`	`super`

Punctuation

Token	Symbol
`LeftParen`	`(`
`RightParen`	`)`
`LeftBrace`	`{`
`RightBrace`	`}`
`LeftBracket`	`[`
`RightBracket`	`]`
`Comma`	`,`
`Semicolon`	`;`
`Colon`	`:`
`ColonColon`	`::`
`Dot`	`.`
`DotDot`	`..`
`DotDotDot`	`...`
`Arrow`	`->`
`FatArrow`	`=>`
`At`	`@`
`Hash`	`#`
`Question`	`?`
`Tilde`	`~`

Operators

Token	Symbol
`Plus`	`+`
`Minus`	`-`
`Star`	`*`
`Slash`	`/`
`Percent`	`%`
`StarStar`	`**`
`Amp`	`&`
`Pipe`	`\|`
`Caret`	`^`
`LessLess`	`<<`
`GreaterGreater`	`>>`
`AmpAmp`	`&&`
`PipePipe`	`\|\|`
`Bang`	`!`
`Equal`	`==`
`BangEqual`	`!=`
`Less`	`<`
`LessEqual`	`<=`
`Greater`	`>`
`GreaterEqual`	`>=`
`Assign`	`=`
`PlusAssign`	`+=`
`MinusAssign`	`-=`
`StarAssign`	`*=`
`SlashAssign`	`/=`
`PercentAssign`	`%=`
`AmpAssign`	`&=`
`PipeAssign`	`\|=`
`CaretAssign`	`^=`
`LessLessAssign`	`<<=`
`GreaterGreaterAssign`	`>>=`

Special

Token	Description
`NewLine`	Significant newline (grammar-dependent)
`EndOfFile`	Marks the end of the source file
`Unknown`	Unrecognized character; preserved for error recovery