package token type TokenType string type Token struct { Type TokenType Literal string } const ( ILLEGAL = "ILLEGAL" EOF = "EOF" IDENT = "IDENT" INT = "INT" ASSIGN = "=" PLUS = "+" COMMA = "," SEMICOLON = ";" LPAREN = "LPAREN" RPAREN = "RPAREN" LBRACE = "LBRACE" RBRACE = "RBRACE" FUNCTION = "FUNCTION" LET = "LET" )