typedef enum {
    TOK_EOF,
    TOK_ERROR,
    TOK_IDENT,
    TOK_KEYWORD,
    TOK_INT,
    TOK_FLOAT,
    TOK_CHAR,
    TOK_STRING,
    TOK_LPAREN,
    TOK_RPAREN,
    TOK_LBRACKET,
    TOK_RBRACKET,
    TOK_LBRACE,
    TOK_RBRACE,
    TOK_COMMA,
    TOK_DOT,
    TOK_ARROW,
    TOK_ELLIPSIS,
    TOK_COLON,
    TOK_SEMICOLON,
    TOK_QUESTION,
    TOK_HASH,
    TOK_HASHHASH,
    TOK_PLUS,
    TOK_MINUS,
    TOK_STAR,
    TOK_SLASH,
    TOK_PERCENT,
    TOK_INC,
    TOK_DEC,
    TOK_ASSIGN,
    TOK_PLUS_ASSIGN,
    TOK_MINUS_ASSIGN,
    TOK_MUL_ASSIGN,
    TOK_DIV_ASSIGN,
    TOK_MOD_ASSIGN,
    TOK_LSHIFT_ASSIGN,
    TOK_RSHIFT_ASSIGN,
    TOK_AND_ASSIGN,
    TOK_XOR_ASSIGN,
    TOK_OR_ASSIGN,
    TOK_EQ,
    TOK_NEQ,
    TOK_LT,
    TOK_LEQ,
    TOK_GT,
    TOK_GEQ,
    TOK_NOT,
    TOK_BITNOT,
    TOK_BITAND,
    TOK_BITOR,
    TOK_BITXOR,
    TOK_AND,
    TOK_OR,
    TOK_LSHIFT,
    TOK_RSHIFT,
} Token_Kind;
char *token_to_op[] = {
    [TOK_LPAREN] = "(",
    [TOK_RPAREN] = ")",
    [TOK_LBRACKET] = "[",
    [TOK_RBRACKET] = "]",
    [TOK_LBRACE] = "{",
    [TOK_RBRACE] = "}",
    [TOK_COMMA] = ",",
    [TOK_DOT] = ".",
    [TOK_ARROW] = "->",
    [TOK_ELLIPSIS] = "...",
    [TOK_COLON] = ":",
    [TOK_SEMICOLON] = ";",
    [TOK_QUESTION] = "?",
    [TOK_HASH] = "#",
    [TOK_HASHHASH] = "##",
    [TOK_PLUS] = "+",
    [TOK_MINUS] = "-",
    [TOK_STAR] = "*",
    [TOK_SLASH] = "/",
    [TOK_PERCENT] = "%",
    [TOK_INC] = "++",
    [TOK_DEC] = "--",
    [TOK_ASSIGN] = "=",
    [TOK_PLUS_ASSIGN] = "+=",
    [TOK_MINUS_ASSIGN] = "-=",
    [TOK_MUL_ASSIGN] = "*=",
    [TOK_DIV_ASSIGN] = "/=",
    [TOK_MOD_ASSIGN] = "%=",
    [TOK_LSHIFT_ASSIGN] = "<<=",
    [TOK_RSHIFT_ASSIGN] = ">>=",
    [TOK_AND_ASSIGN] = "&=",
    [TOK_XOR_ASSIGN] = "^=",
    [TOK_OR_ASSIGN] = "|=",
    [TOK_EQ] = "==",
    [TOK_NEQ] = "!=",
    [TOK_LT] = "<",
    [TOK_LEQ] = "<=",
    [TOK_GT] = ">",
    [TOK_GEQ] = ">=",
    [TOK_NOT] = "!",
    [TOK_BITNOT] = "~",
    [TOK_BITAND] = "&",
    [TOK_BITOR] = "|",
    [TOK_BITXOR] = "^",
    [TOK_AND] = "&&",
    [TOK_OR] = "||",
    [TOK_LSHIFT] = "<<",
    [TOK_RSHIFT] = ">>",
};