Approx_tokenstype token = | AMPERAMPER| AMPERSAND| AND| AS| ASSERT| BACKQUOTE| BANG| BAR| BARBAR| BARRBRACKET| BEGIN| CHAR of char overflow| CLASS| COLON| COLONCOLON| COLONEQUAL| COLONGREATER| CONSTRAINT| DO| DONE| DOT| DOTDOT| DOWNTO| ELSE| END| EOF| EQUAL| EXCEPTION| EXTERNAL| FALSE| FLOAT of string| FOR| FUN| FUNCTION| FUNCTOR| GREATER| GREATERRBRACE| GREATERRBRACKET| IF| IN| INCLUDE| INFIXOP0 of string| INFIXOP1 of string| INFIXOP2 of string| INFIXOP3 of string| INFIXOP4 of string| INHERIT| INITIALIZER| INT of int overflow| INT32 of int32 overflow| INT64 of int64 overflow| LABEL of string| LAZY| LBRACE| LBRACELESS| LBRACKET| LBRACKETBAR| LBRACKETLESS| LBRACKETGREATER| LBRACKETPERCENT| LBRACKETPERCENTPERCENT| LBRACKETAT| LBRACKETATAT| LBRACKETATATAT| LESS| LESSMINUS| LET| LIDENT of string| LINE_DIRECTIVE| LPAREN| MATCH| METHOD| MINUS| MINUSDOT| MINUSGREATER| MODULE| MUTABLE| NATIVEINT of nativeint overflow| NEW| OBJECT| OF| OPEN| OPTLABEL of string| OR| PLUS| PLUSDOT| PREFIXOP of string| PRIVATE| QUESTION| QUESTIONQUESTION| QUOTE| RBRACE| RBRACKET| REC| RPAREN| SEMI| SEMISEMI| SHARP| SIG| STAR| STRUCT| THEN| TILDE| TO| TRUE| TRY| TYPE| TYPEVAR| UIDENT of string| UNDERSCORE| VAL| VIRTUAL| WHEN| WHILE| WITH| ESCAPED_EOL| EOL| SPACES| ILLEGAL_CHAR of char| COMMA| COMMENT_OPEN_EOL| COMMENT_OPEN| COMMENT_OPEN_CLOSE| COMMENT_VERB_OPEN| COMMENT_CODE_OPEN| COMMENT_CONTENT| COMMENT_CLOSE| COMMENT_VERB_CLOSE| COMMENT_CODE_CLOSE| STRING_OPEN| STRING_CONTENT| STRING_CLOSE| PPX_QUOTATION_OPEN| PPX_QUOTATION_CONTENT| PPX_QUOTATION_CLOSE| P4_QUOTATION_OPEN| P4_QUOTATION_CONTENT| P4_QUOTATION_CLOSEval string_of_tok : token -> string