lexer

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

	// Identifiers and literals
	IDENT  = "IDENT"
	INT    = "INT"
	FLOAT  = "FLOAT"
	STRING = "STRING"

	// Operators
	ASSIGN   = "="
	PLUS     = "+"
	MINUS    = "-"
	BANG     = "!"
	ASTERISK = "*"
	SLASH    = "/"
	LT       = "<"
	GT       = ">"
	EQ       = "=="
	NOT_EQ   = "!="

	// Delimiters
	COMMA     = ","
	SEMICOLON = ";"
	COLON     = ":"
	LPAREN    = "("
	RPAREN    = ")"
	LBRACE    = "{"
	RBRACE    = "}"
	LBRACKET  = "["
	RBRACKET  = "]"

	// Keywords
	FUNCTION = "FUNCTION"
	LET      = "LET"
	VAR      = "VAR"
	TRUE     = "TRUE"
	FALSE    = "FALSE"
	IF       = "IF"
	ELSE     = "ELSE"
	ELSEIF   = "ELSEIF"
	FOR      = "FOR"
	WHILE    = "WHILE"
	CLASS    = "CLASS"
	EXTENDS  = "EXTENDS"
	SUPER    = "SUPER"
	RETURN   = "RETURN"
)