token

Documentation

Index

• Constants
• type Token
  • func CreateOperator(literal string, line int) Token
  • func CreateSeparator(literal string, line int) Token
• type Type
  • func LookupIdent(ident string) Type

Constants

const (
	Illegal = "ILLEGAL"
	EOF     = "EOF"

	Constant         = "CONSTANT"
	Ident            = "IDENT"
	InstanceVariable = "INSTANCE_VAR"
	Int              = "INT"
	Float            = "FLOAT"
	String           = "STRING"
	Comment          = "COMMENT"

	Assign   = "="
	Plus     = "+"
	PlusEq   = "+="
	Minus    = "-"
	MinusEq  = "-="
	Bang     = "!"
	Asterisk = "*"
	Pow      = "**"
	Slash    = "/"
	Dot      = "."
	And      = "&&"
	Or       = "||"
	OrEq     = "||="
	Modulo   = "%"

	LT   = "<"
	LTE  = "<="
	GT   = ">"
	GTE  = ">="
	COMP = "<=>"

	Comma     = ","
	Semicolon = ";"
	Colon     = ":"
	Bar       = "|"

	LParen   = "("
	RParen   = ")"
	LBrace   = "{"
	RBrace   = "}"
	LBracket = "["
	RBracket = "]"

	Eq    = "=="
	NotEq = "!="
	Range = ".."

	True     = "TRUE"
	False    = "FALSE"
	Null     = "Null"
	If       = "IF"
	ElsIf    = "ELSIF"
	Else     = "ELSE"
	Case     = "CASE"
	When     = "WHEN"
	Return   = "RETURN"
	Next     = "NEXT"
	Break    = "BREAK"
	Def      = "DEF"
	Self     = "SELF"
	End      = "END"
	While    = "WHILE"
	Do       = "DO"
	Yield    = "YIELD"
	GetBlock = "GET_BLOCK"
	Class    = "CLASS"
	Module   = "MODULE"

	ResolutionOperator = "::"
)

Literals

Types

type Token

type Token struct {
	Type    Type
	Literal string
	Line    int
}

Token is structure for identifying input stream of characters

func CreateOperator

func CreateOperator(literal string, line int) Token

CreateOperator - Factory method for creating operator types token from literal string

func CreateSeparator

func CreateSeparator(literal string, line int) Token

CreateSeparator - Factory method for creating separator types token from literal string

type Type

type Type string

Type is used to determine token type

func LookupIdent

func LookupIdent(ident string) Type

LookupIdent is used for keyword identification