token

Documentation

Index

• Constants
• type Token
• type TokenPos
• type TokenType
  • func LookupIdent(ident string) TokenType

Constants

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

	// Identifiers + literals
	IDENT  = "IDENT" // add, foobar, x, y, ...
	INT    = "INT"   // 1343456
	STRING = "STRING"
	NIL    = "NIL"

	// Operators
	ASSIGN   = "="
	PLUS     = "+"
	MINUS    = "-"
	BANG     = "!"
	ASTERISK = "*"
	SLASH    = "/"
	POW      = "^"
	MOD      = "%"

	LT = "<"
	GT = ">"

	EQ     = "=="
	NOT_EQ = "!="

	LEQT = "<="
	GEQT = ">="

	// Delimiters
	COMMA     = ","
	SEMICOLON = ";"
	COLON     = ":"

	LPAREN   = "("
	RPAREN   = ")"
	LBRACE   = "{"
	RBRACE   = "}"
	LBRACKET = "["
	RBRACKET = "]"

	// Keywords
	FUNCTION = "FUNCTION"
	LET      = "LET"
	TRUE     = "TRUE"
	FALSE    = "FALSE"
	IF       = "IF"
	ELSE     = "ELSE"
	RETURN   = "RETURN"
)

Types

type Token

type Token struct {
	Type    TokenType `json:"type"`
	Literal string    `json:"literal"`
	Pos     TokenPos  `json:"pos"`
}

type TokenPos

type TokenPos struct {
	Line int `json:"line"`
	Col  int `json:"col"`
}

type TokenType

type TokenType string

func LookupIdent

func LookupIdent(ident string) TokenType