package lang

type tokenKind string

const (
	tokenEOF       tokenKind = "EOF"
	tokenIdent     tokenKind = "IDENT"
	tokenInt       tokenKind = "INT"
	tokenString    tokenKind = "STRING"
	tokenTrue      tokenKind = "TRUE"
	tokenFalse     tokenKind = "FALSE"
	tokenNull      tokenKind = "NULL"
	tokenImport    tokenKind = "IMPORT"
	tokenPackage   tokenKind = "PACKAGE"
	tokenClass     tokenKind = "CLASS"
	tokenWorker    tokenKind = "WORKER"
	tokenInterface tokenKind = "INTERFACE"
	tokenFun       tokenKind = "FUN"
	tokenOverride  tokenKind = "OVERRIDE"
	tokenVal       tokenKind = "VAL"
	tokenVar       tokenKind = "VAR"
	tokenIf        tokenKind = "IF"
	tokenElse      tokenKind = "ELSE"
	tokenWhile     tokenKind = "WHILE"
	tokenSelect    tokenKind = "SELECT"
	tokenReturn    tokenKind = "RETURN"
	tokenGo        tokenKind = "GO"
	tokenTry       tokenKind = "TRY"
	tokenCatch     tokenKind = "CATCH"
	tokenThrow     tokenKind = "THROW"
	tokenLParen    tokenKind = "("
	tokenRParen    tokenKind = ")"
	tokenLBrace    tokenKind = "{"
	tokenRBrace    tokenKind = "}"
	tokenComma     tokenKind = ","
	tokenDot       tokenKind = "."
	tokenColon     tokenKind = ":"
	tokenSemicolon tokenKind = ";"
	tokenPlus      tokenKind = "+"
	tokenMinus     tokenKind = "-"
	tokenStar      tokenKind = "*"
	tokenSlash     tokenKind = "/"
	tokenPercent   tokenKind = "%"
	tokenBang      tokenKind = "!"
	tokenAssign    tokenKind = "="
	tokenPlusAssign tokenKind = "+="
	tokenEq        tokenKind = "=="
	tokenNeq       tokenKind = "!="
	tokenLt        tokenKind = "<"
	tokenLte       tokenKind = "<="
	tokenGt        tokenKind = ">"
	tokenGte       tokenKind = ">="
	tokenAnd       tokenKind = "&&"
	tokenOr        tokenKind = "||"
	tokenArrow     tokenKind = "->"
)

var keywords = map[string]tokenKind{
	"fun":       tokenFun,
	"import":    tokenImport,
	"package":   tokenPackage,
	"class":     tokenClass,
	"worker":    tokenWorker,
	"interface": tokenInterface,
	"val":       tokenVal,
	"var":       tokenVar,
	"override":  tokenOverride,
	"if":        tokenIf,
	"else":      tokenElse,
	"while":     tokenWhile,
	"select":    tokenSelect,
	"return":    tokenReturn,
	"go":        tokenGo,
	"try":       tokenTry,
	"catch":     tokenCatch,
	"throw":     tokenThrow,
	"true":      tokenTrue,
	"false":     tokenFalse,
	"null":      tokenNull,
}

type token struct {
	kind   tokenKind
	lexeme string
	pos    int
}