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      1 // This file is automatically generated by scheme2js, except for the
      2 // benchmark harness code at the beginning and end of the file.
      3 
      4 /************* GENERATED FILE - DO NOT EDIT *************/
      5 /************* GENERATED FILE - DO NOT EDIT *************/
      6 /************* GENERATED FILE - DO NOT EDIT *************/
      7 /************* GENERATED FILE - DO NOT EDIT *************/
      8 /************* GENERATED FILE - DO NOT EDIT *************/
      9 /************* GENERATED FILE - DO NOT EDIT *************/
     10 /************* GENERATED FILE - DO NOT EDIT *************/
     11 /************* GENERATED FILE - DO NOT EDIT *************/
     12 /*
     13  * To use write/prints/... the default-output port has to be set first.
     14  * Simply setting SC_DEFAULT_OUT and SC_ERROR_OUT to the desired values
     15  * should do the trick.
     16  * In the following example the std-out and error-port are redirected to
     17  * a DIV.
     18 function initRuntime() {
     19     function escapeHTML(s) {
     20 	var tmp = s;
     21 	tmp = tmp.replace(/&/g, "&");
     22 	tmp = tmp.replace(/</g, "&lt;");
     23 	tmp = tmp.replace(/>/g, "&gt;");
     24 	tmp = tmp.replace(/ /g, "&nbsp;");
     25 	tmp = tmp.replace(/\n/g, "<br />");
     26 	tmp = tmp.replace(/\t/g, "&nbsp;&nbsp;&nbsp;&nbsp");
     27 	return tmp;
     28 	
     29     }
     30 
     31     document.write("<div id='stdout'></div>");
     32     SC_DEFAULT_OUT = new sc_GenericOutputPort(
     33 	function(s) {
     34 	    var stdout = document.getElementById('stdout');
     35 	    stdout.innerHTML = stdout.innerHTML + escapeHTML(s);
     36 	});
     37     SC_ERROR_OUT = SC_DEFAULT_OUT;
     38 }
     39 */
     40 
     41 
     42 function sc_print_debug() {
     43     sc_print.apply(null, arguments);
     44 }
     45 /*** META ((export *js*)) */
     46 var sc_JS_GLOBALS = this;
     47 
     48 var __sc_LINE=-1;
     49 var __sc_FILE="";
     50 
     51 /*** META ((export #t)) */
     52 function sc_alert() {
     53    var len = arguments.length;
     54    var s = "";
     55    var i;
     56 
     57    for( i = 0; i < len; i++ ) {
     58        s += sc_toDisplayString(arguments[ i ]);
     59    }
     60 
     61    return alert( s );
     62 }
     63 
     64 /*** META ((export #t)) */
     65 function sc_typeof( x ) {
     66    return typeof x;
     67 }
     68 
     69 /*** META ((export #t)) */
     70 function sc_error() {
     71     var a = [sc_jsstring2symbol("*error*")];
     72     for (var i = 0; i < arguments.length; i++) {
     73 	a[i+1] = arguments[i];
     74     }
     75     throw a;
     76 }
     77 
     78 /*** META ((export #t)
     79            (peephole (prefix "throw ")))
     80 */
     81 function sc_raise(obj) {
     82     throw obj;
     83 }
     84 
     85 /*** META ((export with-handler-lambda)) */
     86 function sc_withHandlerLambda(handler, body) {
     87     try {
     88 	return body();
     89     } catch(e) {
     90 	if (!e._internalException)
     91 	    return handler(e);
     92 	else
     93 	    throw e;
     94     }
     95 }
     96 
     97 var sc_properties = new Object();
     98 
     99 /*** META ((export #t)) */
    100 function sc_putpropBang(sym, key, val) {
    101     var ht = sc_properties[sym];
    102     if (!ht) {
    103 	ht = new Object();
    104 	sc_properties[sym] = ht;
    105     }
    106     ht[key] = val;
    107 }
    108 
    109 /*** META ((export #t)) */
    110 function sc_getprop(sym, key) {
    111     var ht = sc_properties[sym];
    112     if (ht) {
    113 	if (key in ht)
    114 	    return ht[key];
    115 	else
    116 	    return false;
    117     } else
    118 	return false;
    119 }
    120 
    121 /*** META ((export #t)) */
    122 function sc_rempropBang(sym, key) {
    123     var ht = sc_properties[sym];
    124     if (ht)
    125 	delete ht[key];
    126 }
    127 
    128 /*** META ((export #t)) */
    129 function sc_any2String(o) {
    130     return jsstring2string(sc_toDisplayString(o));
    131 }    
    132 
    133 /*** META ((export #t)
    134            (peephole (infix 2 2 "==="))
    135            (type bool))
    136 */
    137 function sc_isEqv(o1, o2) {
    138     return (o1 === o2);
    139 }
    140 
    141 /*** META ((export #t)
    142            (peephole (infix 2 2 "==="))
    143            (type bool))
    144 */
    145 function sc_isEq(o1, o2) {
    146     return (o1 === o2);
    147 }
    148 
    149 /*** META ((export #t)
    150            (type bool))
    151 */
    152 function sc_isNumber(n) {
    153     return (typeof n === "number");
    154 }
    155 
    156 /*** META ((export #t)
    157            (type bool))
    158 */
    159 function sc_isComplex(n) {
    160     return sc_isNumber(n);
    161 }
    162 
    163 /*** META ((export #t)
    164            (type bool))
    165 */
    166 function sc_isReal(n) {
    167     return sc_isNumber(n);
    168 }
    169 
    170 /*** META ((export #t)
    171            (type bool))
    172 */
    173 function sc_isRational(n) {
    174     return sc_isReal(n);
    175 }
    176 
    177 /*** META ((export #t)
    178            (type bool))
    179 */
    180 function sc_isInteger(n) {
    181     return (parseInt(n) === n);
    182 }
    183 
    184 /*** META ((export #t)
    185            (type bool)
    186            (peephole (postfix ", false")))
    187 */
    188 // we don't have exact numbers...
    189 function sc_isExact(n) {
    190     return false;
    191 }
    192 
    193 /*** META ((export #t)
    194            (peephole (postfix ", true"))
    195 	   (type bool))
    196 */
    197 function sc_isInexact(n) {
    198     return true;
    199 }
    200 
    201 /*** META ((export = =fx =fl)
    202            (type bool)
    203            (peephole (infix 2 2 "===")))
    204 */
    205 function sc_equal(x) {
    206     for (var i = 1; i < arguments.length; i++)
    207 	if (x !== arguments[i])
    208 	    return false;
    209     return true;
    210 }
    211 
    212 /*** META ((export < <fx <fl)
    213            (type bool)
    214            (peephole (infix 2 2 "<")))
    215 */
    216 function sc_less(x) {
    217     for (var i = 1; i < arguments.length; i++) {
    218 	if (x >= arguments[i])
    219 	    return false;
    220 	x = arguments[i];
    221     }
    222     return true;
    223 }
    224 
    225 /*** META ((export > >fx >fl)
    226            (type bool)
    227            (peephole (infix 2 2 ">")))
    228 */
    229 function sc_greater(x, y) {
    230     for (var i = 1; i < arguments.length; i++) {
    231 	if (x <= arguments[i])
    232 	    return false;
    233 	x = arguments[i];
    234     }
    235     return true;
    236 }
    237 
    238 /*** META ((export <= <=fx <=fl)
    239            (type bool)
    240            (peephole (infix 2 2 "<=")))
    241 */
    242 function sc_lessEqual(x, y) {
    243     for (var i = 1; i < arguments.length; i++) {
    244 	if (x > arguments[i])
    245 	    return false;
    246 	x = arguments[i];
    247     }
    248     return true;
    249 }
    250 
    251 /*** META ((export >= >=fl >=fx)
    252            (type bool)
    253            (peephole (infix 2 2 ">=")))
    254 */
    255 function sc_greaterEqual(x, y) {
    256     for (var i = 1; i < arguments.length; i++) {
    257 	if (x < arguments[i])
    258 	    return false;
    259 	x = arguments[i];
    260     }
    261     return true;
    262 }
    263 
    264 /*** META ((export #t)
    265            (type bool)
    266            (peephole (postfix "=== 0")))
    267 */
    268 function sc_isZero(x) {
    269     return (x === 0);
    270 }
    271 
    272 /*** META ((export #t)
    273            (type bool)
    274            (peephole (postfix "> 0")))
    275 */
    276 function sc_isPositive(x) {
    277     return (x > 0);
    278 }
    279 
    280 /*** META ((export #t)
    281            (type bool)
    282            (peephole (postfix "< 0")))
    283 */
    284 function sc_isNegative(x) {
    285     return (x < 0);
    286 }
    287 
    288 /*** META ((export #t)
    289            (type bool)
    290            (peephole (postfix "%2===1")))
    291 */
    292 function sc_isOdd(x) {
    293     return (x % 2 === 1);
    294 }
    295 
    296 /*** META ((export #t)
    297            (type bool)
    298            (peephole (postfix "%2===0")))
    299 */
    300 function sc_isEven(x) {
    301     return (x % 2 === 0);
    302 }
    303 
    304 /*** META ((export #t)) */
    305 var sc_max = Math.max;
    306 /*** META ((export #t)) */
    307 var sc_min = Math.min;
    308 
    309 /*** META ((export + +fx +fl)
    310            (peephole (infix 0 #f "+" "0")))
    311 */
    312 function sc_plus() {
    313     var sum = 0;
    314     for (var i = 0; i < arguments.length; i++)
    315 	sum += arguments[i];
    316     return sum;
    317 }
    318 
    319 /*** META ((export * *fx *fl)
    320            (peephole (infix 0 #f "*" "1")))
    321 */
    322 function sc_multi() {
    323     var product = 1;
    324     for (var i = 0; i < arguments.length; i++)
    325 	product *= arguments[i];
    326     return product;
    327 }
    328 
    329 /*** META ((export - -fx -fl)
    330            (peephole (minus)))
    331 */
    332 function sc_minus(x) {
    333     if (arguments.length === 1)
    334 	return -x;
    335     else {
    336 	var res = x;
    337 	for (var i = 1; i < arguments.length; i++)
    338 	    res -= arguments[i];
    339 	return res;
    340     }
    341 }
    342 
    343 /*** META ((export / /fl)
    344            (peephole (div)))
    345 */
    346 function sc_div(x) {
    347     if (arguments.length === 1)
    348 	return 1/x;
    349     else {
    350 	var res = x;
    351 	for (var i = 1; i < arguments.length; i++)
    352 	    res /= arguments[i];
    353 	return res;
    354     }
    355 }
    356 
    357 /*** META ((export #t)) */
    358 var sc_abs = Math.abs;
    359 
    360 /*** META ((export quotient /fx)
    361            (peephole (hole 2 "parseInt(" x "/" y ")")))
    362 */
    363 function sc_quotient(x, y) {
    364     return parseInt(x / y);
    365 }
    366 
    367 /*** META ((export #t)
    368            (peephole (infix 2 2 "%")))
    369 */
    370 function sc_remainder(x, y) {
    371     return x % y;
    372 }
    373 
    374 /*** META ((export #t)
    375            (peephole (modulo)))
    376 */
    377 function sc_modulo(x, y) {
    378     var remainder = x % y;
    379     // if they don't have the same sign
    380     if ((remainder * y) < 0)
    381 	return remainder + y;
    382     else
    383 	return remainder;
    384 }
    385 
    386 function sc_euclid_gcd(a, b) {
    387     var temp;
    388     if (a === 0) return b;
    389     if (b === 0) return a;
    390     if (a < 0) {a = -a;};
    391     if (b < 0) {b = -b;};
    392     if (b > a) {temp = a; a = b; b = temp;};
    393     while (true) {
    394 	a %= b;
    395 	if(a === 0) {return b;};
    396 	b %= a;
    397 	if(b === 0) {return a;};
    398     };
    399     return b;
    400 }
    401 
    402 /*** META ((export #t)) */
    403 function sc_gcd() {
    404     var gcd = 0;
    405     for (var i = 0; i < arguments.length; i++)
    406 	gcd = sc_euclid_gcd(gcd, arguments[i]);
    407     return gcd;
    408 }
    409 
    410 /*** META ((export #t)) */
    411 function sc_lcm() {
    412     var lcm = 1;
    413     for (var i = 0; i < arguments.length; i++) {
    414 	var f = Math.round(arguments[i] / sc_euclid_gcd(arguments[i], lcm));
    415 	lcm *= Math.abs(f);
    416     }
    417     return lcm;
    418 }
    419 
    420 // LIMITATION: numerator and denominator don't make sense in floating point world.
    421 //var SC_MAX_DECIMALS = 1000000
    422 //
    423 // function sc_numerator(x) {
    424 //     var rounded = Math.round(x * SC_MAX_DECIMALS);
    425 //     return Math.round(rounded / sc_euclid_gcd(rounded, SC_MAX_DECIMALS));
    426 // }
    427 
    428 // function sc_denominator(x) {
    429 //     var rounded = Math.round(x * SC_MAX_DECIMALS);
    430 //     return Math.round(SC_MAX_DECIMALS / sc_euclid_gcd(rounded, SC_MAX_DECIMALS));
    431 // }
    432 
    433 /*** META ((export #t)) */
    434 var sc_floor = Math.floor;
    435 /*** META ((export #t)) */
    436 var sc_ceiling = Math.ceil;
    437 /*** META ((export #t)) */
    438 var sc_truncate = parseInt;
    439 /*** META ((export #t)) */
    440 var sc_round = Math.round;
    441 
    442 // LIMITATION: sc_rationalize doesn't make sense in a floating point world.
    443 
    444 /*** META ((export #t)) */
    445 var sc_exp = Math.exp;
    446 /*** META ((export #t)) */
    447 var sc_log = Math.log;
    448 /*** META ((export #t)) */
    449 var sc_sin = Math.sin;
    450 /*** META ((export #t)) */
    451 var sc_cos = Math.cos;
    452 /*** META ((export #t)) */
    453 var sc_tan = Math.tan;
    454 /*** META ((export #t)) */
    455 var sc_asin = Math.asin;
    456 /*** META ((export #t)) */
    457 var sc_acos = Math.acos;
    458 /*** META ((export #t)) */
    459 var sc_atan = Math.atan;
    460 
    461 /*** META ((export #t)) */
    462 var sc_sqrt = Math.sqrt;
    463 /*** META ((export #t)) */
    464 var sc_expt = Math.pow;
    465 
    466 // LIMITATION: we don't have complex numbers.
    467 // LIMITATION: the following functions are hence not implemented.
    468 // LIMITATION: make-rectangular, make-polar, real-part, imag-part, magnitude, angle
    469 // LIMITATION: 2 argument atan
    470 
    471 /*** META ((export #t)
    472            (peephole (id)))
    473 */
    474 function sc_exact2inexact(x) {
    475     return x;
    476 }
    477 
    478 /*** META ((export #t)
    479            (peephole (id)))
    480 */
    481 function sc_inexact2exact(x) {
    482     return x;
    483 }
    484 
    485 function sc_number2jsstring(x, radix) {
    486     if (radix)
    487 	return x.toString(radix);
    488     else
    489 	return x.toString();
    490 }
    491 
    492 function sc_jsstring2number(s, radix) {
    493     if (s === "") return false;
    494 
    495     if (radix) {
    496 	var t = parseInt(s, radix);
    497 	if (!t && t !== 0) return false;
    498 	// verify that each char is in range. (parseInt ignores leading
    499 	// white and trailing chars)
    500 	var allowedChars = "01234567890abcdefghijklmnopqrstuvwxyz".substring(0, radix+1);
    501 	if ((new RegExp("^["+allowedChars+"]*$", "i")).test(s))
    502 	    return t;
    503 	else return false;
    504     } else {
    505 	var t = +s; // does not ignore trailing chars.
    506 	if (!t && t !== 0) return false;
    507 	// simply verify that first char is not whitespace.
    508 	var c = s.charAt(0);
    509 	// if +c is 0, but the char is not "0", then we have a whitespace.
    510 	if (+c === 0 && c !== "0") return false;
    511 	return t;
    512     }
    513 }
    514 
    515 /*** META ((export #t)
    516            (type bool)
    517            (peephole (not)))
    518 */
    519 function sc_not(b) {
    520     return b === false;
    521 }
    522 
    523 /*** META ((export #t)
    524            (type bool))
    525 */
    526 function sc_isBoolean(b) {
    527     return (b === true) || (b === false);
    528 }
    529 
    530 function sc_Pair(car, cdr) {
    531     this.car = car;
    532     this.cdr = cdr;
    533 }
    534 
    535 sc_Pair.prototype.toString = function() {
    536     return sc_toDisplayString(this);
    537 };
    538 sc_Pair.prototype.sc_toWriteOrDisplayString = function(writeOrDisplay) {
    539     var current = this;
    540 
    541     var res = "(";
    542 
    543     while(true) {
    544 	res += writeOrDisplay(current.car);
    545 	if (sc_isPair(current.cdr)) {
    546 	    res += " ";
    547 	    current = current.cdr;
    548 	} else if (current.cdr !== null) {
    549 	    res += " . " + writeOrDisplay(current.cdr);
    550 	    break;
    551 	} else // current.cdr == null
    552 	    break;
    553     }
    554 	
    555     res += ")";
    556 
    557     return res;
    558 };
    559 sc_Pair.prototype.sc_toDisplayString = function() {
    560     return this.sc_toWriteOrDisplayString(sc_toDisplayString);
    561 };
    562 sc_Pair.prototype.sc_toWriteString = function() {
    563     return this.sc_toWriteOrDisplayString(sc_toWriteString);
    564 };
    565 // sc_Pair.prototype.sc_toWriteCircleString in IO.js
    566 
    567 /*** META ((export #t)
    568            (type bool)
    569            (peephole (postfix " instanceof sc_Pair")))
    570 */
    571 function sc_isPair(p) {
    572     return (p instanceof sc_Pair);
    573 }
    574 
    575 function sc_isPairEqual(p1, p2, comp) {
    576     return (comp(p1.car, p2.car) && comp(p1.cdr, p2.cdr));
    577 }
    578 
    579 /*** META ((export #t)
    580            (peephole (hole 2 "new sc_Pair(" car ", " cdr ")")))
    581 */
    582 function sc_cons(car, cdr) {
    583     return new sc_Pair(car, cdr);
    584 }
    585 
    586 /*** META ((export cons*)) */
    587 function sc_consStar() {
    588     var res = arguments[arguments.length - 1];
    589     for (var i = arguments.length-2; i >= 0; i--)
    590 	res = new sc_Pair(arguments[i], res);
    591     return res;
    592 }
    593 
    594 /*** META ((export #t)
    595            (peephole (postfix ".car")))
    596 */
    597 function sc_car(p) {
    598     return p.car;
    599 }
    600 
    601 /*** META ((export #t)
    602            (peephole (postfix ".cdr")))
    603 */
    604 function sc_cdr(p) {
    605     return p.cdr;
    606 }
    607 
    608 /*** META ((export #t)
    609            (peephole (hole 2 p ".car = " val)))
    610 */
    611 function sc_setCarBang(p, val) {
    612     p.car = val;
    613 }
    614 
    615 /*** META ((export #t)
    616            (peephole (hole 2 p ".cdr = " val)))
    617 */
    618 function sc_setCdrBang(p, val) {
    619     p.cdr = val;
    620 }
    621 
    622 /*** META ((export #t)
    623            (peephole (postfix ".car.car")))
    624 */
    625 function sc_caar(p) { return p.car.car; }
    626 /*** META ((export #t)
    627            (peephole (postfix ".cdr.car")))
    628 */
    629 function sc_cadr(p) { return p.cdr.car; }
    630 /*** META ((export #t)
    631            (peephole (postfix ".car.cdr")))
    632 */
    633 function sc_cdar(p) { return p.car.cdr; }
    634 /*** META ((export #t)
    635            (peephole (postfix ".cdr.cdr")))
    636 */
    637 function sc_cddr(p) { return p.cdr.cdr; }
    638 /*** META ((export #t)
    639            (peephole (postfix ".car.car.car")))
    640 */
    641 function sc_caaar(p) { return p.car.car.car; }
    642 /*** META ((export #t)
    643            (peephole (postfix ".car.cdr.car")))
    644 */
    645 function sc_cadar(p) { return p.car.cdr.car; }
    646 /*** META ((export #t)
    647            (peephole (postfix ".cdr.car.car")))
    648 */
    649 function sc_caadr(p) { return p.cdr.car.car; }
    650 /*** META ((export #t)
    651            (peephole (postfix ".cdr.cdr.car")))
    652 */
    653 function sc_caddr(p) { return p.cdr.cdr.car; }
    654 /*** META ((export #t)
    655            (peephole (postfix ".car.car.cdr")))
    656 */
    657 function sc_cdaar(p) { return p.car.car.cdr; }
    658 /*** META ((export #t)
    659            (peephole (postfix ".cdr.car.cdr")))
    660 */
    661 function sc_cdadr(p) { return p.cdr.car.cdr; }
    662 /*** META ((export #t)
    663            (peephole (postfix ".car.cdr.cdr")))
    664 */
    665 function sc_cddar(p) { return p.car.cdr.cdr; }
    666 /*** META ((export #t)
    667            (peephole (postfix ".cdr.cdr.cdr")))
    668 */
    669 function sc_cdddr(p) { return p.cdr.cdr.cdr; }
    670 /*** META ((export #t)
    671            (peephole (postfix ".car.car.car.car")))
    672 */
    673 function sc_caaaar(p) { return p.car.car.car.car; }
    674 /*** META ((export #t)
    675            (peephole (postfix ".car.cdr.car.car")))
    676 */
    677 function sc_caadar(p) { return p.car.cdr.car.car; }
    678 /*** META ((export #t)
    679            (peephole (postfix ".cdr.car.car.car")))
    680 */
    681 function sc_caaadr(p) { return p.cdr.car.car.car; }
    682 /*** META ((export #t)
    683            (peephole (postfix ".cdr.cdr.car.car")))
    684 */
    685 function sc_caaddr(p) { return p.cdr.cdr.car.car; }
    686 /*** META ((export #t)
    687            (peephole (postfix ".car.car.car.cdr")))
    688 */
    689 function sc_cdaaar(p) { return p.car.car.car.cdr; }
    690 /*** META ((export #t)
    691            (peephole (postfix ".car.cdr.car.cdr")))
    692 */
    693 function sc_cdadar(p) { return p.car.cdr.car.cdr; }
    694 /*** META ((export #t)
    695            (peephole (postfix ".cdr.car.car.cdr")))
    696 */
    697 function sc_cdaadr(p) { return p.cdr.car.car.cdr; }
    698 /*** META ((export #t)
    699            (peephole (postfix ".cdr.cdr.car.cdr")))
    700 */
    701 function sc_cdaddr(p) { return p.cdr.cdr.car.cdr; }
    702 /*** META ((export #t)
    703            (peephole (postfix ".car.car.cdr.car")))
    704 */
    705 function sc_cadaar(p) { return p.car.car.cdr.car; }
    706 /*** META ((export #t)
    707            (peephole (postfix ".car.cdr.cdr.car")))
    708 */
    709 function sc_caddar(p) { return p.car.cdr.cdr.car; }
    710 /*** META ((export #t)
    711            (peephole (postfix ".cdr.car.cdr.car")))
    712 */
    713 function sc_cadadr(p) { return p.cdr.car.cdr.car; }
    714 /*** META ((export #t)
    715            (peephole (postfix ".cdr.cdr.cdr.car")))
    716 */
    717 function sc_cadddr(p) { return p.cdr.cdr.cdr.car; }
    718 /*** META ((export #t)
    719            (peephole (postfix ".car.car.cdr.cdr")))
    720 */
    721 function sc_cddaar(p) { return p.car.car.cdr.cdr; }
    722 /*** META ((export #t)
    723            (peephole (postfix ".car.cdr.cdr.cdr")))
    724 */
    725 function sc_cdddar(p) { return p.car.cdr.cdr.cdr; }
    726 /*** META ((export #t)
    727            (peephole (postfix ".cdr.car.cdr.cdr")))
    728 */
    729 function sc_cddadr(p) { return p.cdr.car.cdr.cdr; }
    730 /*** META ((export #t)
    731            (peephole (postfix ".cdr.cdr.cdr.cdr")))
    732 */
    733 function sc_cddddr(p) { return p.cdr.cdr.cdr.cdr; }
    734 
    735 /*** META ((export #t)) */
    736 function sc_lastPair(l) {
    737     if (!sc_isPair(l)) sc_error("sc_lastPair: pair expected");
    738     var res = l;
    739     var cdr = l.cdr;
    740     while (sc_isPair(cdr)) {
    741 	res = cdr;
    742 	cdr = res.cdr;
    743     }
    744     return res;
    745 }
    746 
    747 /*** META ((export #t)
    748            (type bool)
    749            (peephole (postfix " === null")))
    750 */
    751 function sc_isNull(o) {
    752     return (o === null);
    753 }
    754 
    755 /*** META ((export #t)
    756            (type bool))
    757 */
    758 function sc_isList(o) {
    759     var rabbit;
    760     var turtle;
    761 
    762     var rabbit = o;
    763     var turtle = o;
    764     while (true) {
    765 	if (rabbit === null ||
    766 	    (rabbit instanceof sc_Pair && rabbit.cdr === null))
    767 	    return true;  // end of list
    768 	else if ((rabbit instanceof sc_Pair) &&
    769 		 (rabbit.cdr instanceof sc_Pair)) {
    770 	    rabbit = rabbit.cdr.cdr;
    771 	    turtle = turtle.cdr;
    772 	    if (rabbit === turtle) return false; // cycle
    773 	} else
    774 	    return false; // not pair
    775     }
    776 }
    777 
    778 /*** META ((export #t)) */
    779 function sc_list() {
    780     var res = null;
    781     var a = arguments;
    782     for (var i = a.length-1; i >= 0; i--)
    783 	res = new sc_Pair(a[i], res);
    784     return res;
    785 }
    786 
    787 /*** META ((export #t)) */
    788 function sc_iota(num, init) {
    789    var res = null;
    790    if (!init) init = 0;
    791    for (var i = num - 1; i >= 0; i--)
    792       res = new sc_Pair(i + init, res);
    793    return res;
    794 }
    795 
    796 /*** META ((export #t)) */
    797 function sc_makeList(nbEls, fill) {
    798     var res = null;
    799     for (var i = 0; i < nbEls; i++)
    800 	res = new sc_Pair(fill, res);
    801     return res;
    802 }
    803 
    804 /*** META ((export #t)) */
    805 function sc_length(l) {
    806     var res = 0;
    807     while (l !== null) {
    808 	res++;
    809 	l = l.cdr;
    810     }
    811     return res;
    812 }
    813 
    814 /*** META ((export #t)) */
    815 function sc_remq(o, l) {
    816     var dummy = { cdr : null };
    817     var tail = dummy;
    818     while (l !== null) {
    819 	if (l.car !== o) {
    820 	    tail.cdr = sc_cons(l.car, null);
    821 	    tail = tail.cdr;
    822 	}
    823 	l = l.cdr;
    824     }
    825     return dummy.cdr;
    826 }
    827 
    828 /*** META ((export #t)) */
    829 function sc_remqBang(o, l) {
    830     var dummy = { cdr : null };
    831     var tail = dummy;
    832     var needsAssig = true;
    833     while (l !== null) {
    834 	if (l.car === o) {
    835 	    needsAssig = true;
    836 	} else {
    837 	    if (needsAssig) {
    838 		tail.cdr = l;
    839 		needsAssig = false;
    840 	    }
    841 	    tail = l;
    842 	}
    843 	l = l.cdr;
    844     }
    845     tail.cdr = null;
    846     return dummy.cdr;
    847 }
    848 
    849 /*** META ((export #t)) */
    850 function sc_delete(o, l) {
    851     var dummy = { cdr : null };
    852     var tail = dummy;
    853     while (l !== null) {
    854 	if (!sc_isEqual(l.car, o)) {
    855 	    tail.cdr = sc_cons(l.car, null);
    856 	    tail = tail.cdr;
    857 	}
    858 	l = l.cdr;
    859     }
    860     return dummy.cdr;
    861 }
    862 
    863 /*** META ((export #t)) */
    864 function sc_deleteBang(o, l) {
    865     var dummy = { cdr : null };
    866     var tail = dummy;
    867     var needsAssig = true;
    868     while (l !== null) {
    869 	if (sc_isEqual(l.car, o)) {
    870 	    needsAssig = true;
    871 	} else {
    872 	    if (needsAssig) {
    873 		tail.cdr = l;
    874 		needsAssig = false;
    875 	    }
    876 	    tail = l;
    877 	}
    878 	l = l.cdr;
    879     }
    880     tail.cdr = null;
    881     return dummy.cdr;
    882 }
    883 
    884 function sc_reverseAppendBang(l1, l2) {
    885     var res = l2;
    886     while (l1 !== null) {
    887 	var tmp = res;
    888 	res = l1;
    889 	l1 = l1.cdr;
    890 	res.cdr = tmp;
    891     }
    892     return res;
    893 }
    894 	
    895 function sc_dualAppend(l1, l2) {
    896     if (l1 === null) return l2;
    897     if (l2 === null) return l1;
    898     var rev = sc_reverse(l1);
    899     return sc_reverseAppendBang(rev, l2);
    900 }
    901 
    902 /*** META ((export #t)) */
    903 function sc_append() {
    904     if (arguments.length === 0)
    905 	return null;
    906     var res = arguments[arguments.length - 1];
    907     for (var i = arguments.length - 2; i >= 0; i--)
    908 	res = sc_dualAppend(arguments[i], res);
    909     return res;
    910 }
    911 
    912 function sc_dualAppendBang(l1, l2) {
    913     if (l1 === null) return l2;
    914     if (l2 === null) return l1;
    915     var tmp = l1;
    916     while (tmp.cdr !== null) tmp=tmp.cdr;
    917     tmp.cdr = l2;
    918     return l1;
    919 }
    920     
    921 /*** META ((export #t)) */
    922 function sc_appendBang() {
    923     var res = null;
    924     for (var i = 0; i < arguments.length; i++)
    925 	res = sc_dualAppendBang(res, arguments[i]);
    926     return res;
    927 }
    928 
    929 /*** META ((export #t)) */
    930 function sc_reverse(l1) {
    931     var res = null;
    932     while (l1 !== null) {
    933 	res = sc_cons(l1.car, res);
    934 	l1 = l1.cdr;
    935     }
    936     return res;
    937 }
    938 
    939 /*** META ((export #t)) */
    940 function sc_reverseBang(l) {
    941     return sc_reverseAppendBang(l, null);
    942 }
    943 
    944 /*** META ((export #t)) */
    945 function sc_listTail(l, k) {
    946     var res = l;
    947     for (var i = 0; i < k; i++) {
    948 	res = res.cdr;
    949     }
    950     return res;
    951 }
    952 
    953 /*** META ((export #t)) */
    954 function sc_listRef(l, k) {
    955     return sc_listTail(l, k).car;
    956 }
    957 
    958 /* // unoptimized generic versions
    959 function sc_memX(o, l, comp) {
    960     while (l != null) {
    961 	if (comp(l.car, o))
    962 	    return l;
    963 	l = l.cdr;
    964     }
    965     return false;
    966 }
    967 function sc_memq(o, l) { return sc_memX(o, l, sc_isEq); }
    968 function sc_memv(o, l) { return sc_memX(o, l, sc_isEqv); }
    969 function sc_member(o, l) { return sc_memX(o, l, sc_isEqual); }
    970 */
    971 
    972 /* optimized versions */
    973 /*** META ((export #t)) */
    974 function sc_memq(o, l) {
    975     while (l !== null) {
    976 	if (l.car === o)
    977 	    return l;
    978 	l = l.cdr;
    979     }
    980     return false;
    981 }
    982 /*** META ((export #t)) */
    983 function sc_memv(o, l) {
    984     while (l !== null) {
    985 	if (l.car === o)
    986 	    return l;
    987 	l = l.cdr;
    988     }
    989     return false;
    990 }
    991 /*** META ((export #t)) */
    992 function sc_member(o, l) {
    993     while (l !== null) {
    994 	if (sc_isEqual(l.car,o))
    995 	    return l;
    996 	l = l.cdr;
    997     }
    998     return false;
    999 }
   1000 
   1001 /* // generic unoptimized versions
   1002 function sc_assX(o, al, comp) {
   1003     while (al != null) {
   1004 	if (comp(al.car.car, o))
   1005 	    return al.car;
   1006 	al = al.cdr;
   1007     }
   1008     return false;
   1009 }
   1010 function sc_assq(o, al) { return sc_assX(o, al, sc_isEq); }
   1011 function sc_assv(o, al) { return sc_assX(o, al, sc_isEqv); }
   1012 function sc_assoc(o, al) { return sc_assX(o, al, sc_isEqual); }
   1013 */
   1014 // optimized versions
   1015 /*** META ((export #t)) */
   1016 function sc_assq(o, al) {
   1017     while (al !== null) {
   1018 	if (al.car.car === o)
   1019 	    return al.car;
   1020 	al = al.cdr;
   1021     }
   1022     return false;
   1023 }
   1024 /*** META ((export #t)) */
   1025 function sc_assv(o, al) {
   1026     while (al !== null) {
   1027 	if (al.car.car === o)
   1028 	    return al.car;
   1029 	al = al.cdr;
   1030     }
   1031     return false;
   1032 }
   1033 /*** META ((export #t)) */
   1034 function sc_assoc(o, al) {
   1035     while (al !== null) {
   1036 	if (sc_isEqual(al.car.car, o))
   1037 	    return al.car;
   1038 	al = al.cdr;
   1039     }
   1040     return false;
   1041 }
   1042 
   1043 /* can be used for mutable strings and characters */
   1044 function sc_isCharStringEqual(cs1, cs2) { return cs1.val === cs2.val; }
   1045 function sc_isCharStringLess(cs1, cs2) { return cs1.val < cs2.val; }
   1046 function sc_isCharStringGreater(cs1, cs2) { return cs1.val > cs2.val; }
   1047 function sc_isCharStringLessEqual(cs1, cs2) { return cs1.val <= cs2.val; }
   1048 function sc_isCharStringGreaterEqual(cs1, cs2) { return cs1.val >= cs2.val; }
   1049 function sc_isCharStringCIEqual(cs1, cs2)
   1050     { return cs1.val.toLowerCase() === cs2.val.toLowerCase(); }
   1051 function sc_isCharStringCILess(cs1, cs2)
   1052     { return cs1.val.toLowerCase() < cs2.val.toLowerCase(); }
   1053 function sc_isCharStringCIGreater(cs1, cs2)
   1054     { return cs1.val.toLowerCase() > cs2.val.toLowerCase(); }
   1055 function sc_isCharStringCILessEqual(cs1, cs2)
   1056     { return cs1.val.toLowerCase() <= cs2.val.toLowerCase(); }
   1057 function sc_isCharStringCIGreaterEqual(cs1, cs2)
   1058     { return cs1.val.toLowerCase() >= cs2.val.toLowerCase(); }
   1059 
   1060 
   1061 
   1062 
   1063 function sc_Char(c) {
   1064     var cached = sc_Char.lazy[c];
   1065     if (cached)
   1066 	return cached;
   1067     this.val = c;
   1068     sc_Char.lazy[c] = this;
   1069     // add return, so FF does not complain.
   1070     return undefined;
   1071 }
   1072 sc_Char.lazy = new Object();
   1073 // thanks to Eric
   1074 sc_Char.char2readable = {
   1075     "\000": "#\\null",
   1076     "\007": "#\\bell",
   1077     "\010": "#\\backspace",
   1078     "\011": "#\\tab",
   1079     "\012": "#\\newline",
   1080     "\014": "#\\page",
   1081     "\015": "#\\return",
   1082     "\033": "#\\escape",
   1083     "\040": "#\\space",
   1084     "\177": "#\\delete",
   1085 
   1086   /* poeticless names */
   1087     "\001": "#\\soh",
   1088     "\002": "#\\stx",
   1089     "\003": "#\\etx",
   1090     "\004": "#\\eot",
   1091     "\005": "#\\enq",
   1092     "\006": "#\\ack",
   1093 
   1094     "\013": "#\\vt",
   1095     "\016": "#\\so",
   1096     "\017": "#\\si",
   1097 
   1098     "\020": "#\\dle",
   1099     "\021": "#\\dc1",
   1100     "\022": "#\\dc2",
   1101     "\023": "#\\dc3",
   1102     "\024": "#\\dc4",
   1103     "\025": "#\\nak",
   1104     "\026": "#\\syn",
   1105     "\027": "#\\etb",
   1106 
   1107     "\030": "#\\can",
   1108     "\031": "#\\em",
   1109     "\032": "#\\sub",
   1110     "\033": "#\\esc",
   1111     "\034": "#\\fs",
   1112     "\035": "#\\gs",
   1113     "\036": "#\\rs",
   1114     "\037": "#\\us"};
   1115 
   1116 sc_Char.readable2char = {
   1117     "null": "\000",
   1118     "bell": "\007",
   1119     "backspace": "\010",
   1120     "tab": "\011",
   1121     "newline": "\012",
   1122     "page": "\014",
   1123     "return": "\015",
   1124     "escape": "\033",
   1125     "space": "\040",
   1126     "delete": "\000",
   1127     "soh": "\001",
   1128     "stx": "\002",
   1129     "etx": "\003",
   1130     "eot": "\004",
   1131     "enq": "\005",
   1132     "ack": "\006",
   1133     "bel": "\007",
   1134     "bs": "\010",
   1135     "ht": "\011",
   1136     "nl": "\012",
   1137     "vt": "\013",
   1138     "np": "\014",
   1139     "cr": "\015",
   1140     "so": "\016",
   1141     "si": "\017",
   1142     "dle": "\020",
   1143     "dc1": "\021",
   1144     "dc2": "\022",
   1145     "dc3": "\023",
   1146     "dc4": "\024",
   1147     "nak": "\025",
   1148     "syn": "\026",
   1149     "etb": "\027",
   1150     "can": "\030",
   1151     "em": "\031",
   1152     "sub": "\032",
   1153     "esc": "\033",
   1154     "fs": "\034",
   1155     "gs": "\035",
   1156     "rs": "\036",
   1157     "us": "\037",
   1158     "sp": "\040",
   1159     "del": "\177"};
   1160     
   1161 sc_Char.prototype.toString = function() {
   1162     return this.val;
   1163 };
   1164 // sc_toDisplayString == toString
   1165 sc_Char.prototype.sc_toWriteString = function() {
   1166     var entry = sc_Char.char2readable[this.val];
   1167     if (entry)
   1168 	return entry;
   1169     else
   1170 	return "#\\" + this.val;
   1171 };
   1172 
   1173 /*** META ((export #t)
   1174            (type bool)
   1175            (peephole (postfix "instanceof sc_Char")))
   1176 */
   1177 function sc_isChar(c) {
   1178     return (c instanceof sc_Char);
   1179 }
   1180 
   1181 /*** META ((export char=?)
   1182            (type bool)
   1183            (peephole (hole 2 c1 ".val === " c2 ".val")))
   1184 */
   1185 var sc_isCharEqual = sc_isCharStringEqual;
   1186 /*** META ((export char<?)
   1187            (type bool)
   1188            (peephole (hole 2 c1 ".val < " c2 ".val")))
   1189 */
   1190 var sc_isCharLess = sc_isCharStringLess;
   1191 /*** META ((export char>?)
   1192            (type bool)
   1193            (peephole (hole 2 c1 ".val > " c2 ".val")))
   1194 */
   1195 var sc_isCharGreater = sc_isCharStringGreater;
   1196 /*** META ((export char<=?)
   1197            (type bool)
   1198            (peephole (hole 2 c1 ".val <= " c2 ".val")))
   1199 */
   1200 var sc_isCharLessEqual = sc_isCharStringLessEqual;
   1201 /*** META ((export char>=?)
   1202            (type bool)
   1203            (peephole (hole 2 c1 ".val >= " c2 ".val")))
   1204 */
   1205 var sc_isCharGreaterEqual = sc_isCharStringGreaterEqual;
   1206 /*** META ((export char-ci=?)
   1207            (type bool)
   1208            (peephole (hole 2 c1 ".val.toLowerCase() === " c2 ".val.toLowerCase()")))
   1209 */
   1210 var sc_isCharCIEqual = sc_isCharStringCIEqual;
   1211 /*** META ((export char-ci<?)
   1212            (type bool)
   1213            (peephole (hole 2 c1 ".val.toLowerCase() < " c2 ".val.toLowerCase()")))
   1214 */
   1215 var sc_isCharCILess = sc_isCharStringCILess;
   1216 /*** META ((export char-ci>?)
   1217            (type bool)
   1218            (peephole (hole 2 c1 ".val.toLowerCase() > " c2 ".val.toLowerCase()")))
   1219 */
   1220 var sc_isCharCIGreater = sc_isCharStringCIGreater;
   1221 /*** META ((export char-ci<=?)
   1222            (type bool)
   1223            (peephole (hole 2 c1 ".val.toLowerCase() <= " c2 ".val.toLowerCase()")))
   1224 */
   1225 var sc_isCharCILessEqual = sc_isCharStringCILessEqual;
   1226 /*** META ((export char-ci>=?)
   1227            (type bool)
   1228            (peephole (hole 2 c1 ".val.toLowerCase() >= " c2 ".val.toLowerCase()")))
   1229 */
   1230 var sc_isCharCIGreaterEqual = sc_isCharStringCIGreaterEqual;
   1231 
   1232 var SC_NUMBER_CLASS = "0123456789";
   1233 var SC_WHITESPACE_CLASS = ' \r\n\t\f';
   1234 var SC_LOWER_CLASS = 'abcdefghijklmnopqrstuvwxyz';
   1235 var SC_UPPER_CLASS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
   1236 
   1237 function sc_isCharOfClass(c, cl) { return (cl.indexOf(c) != -1); }
   1238 /*** META ((export #t)
   1239            (type bool))
   1240 */
   1241 function sc_isCharAlphabetic(c)
   1242     { return sc_isCharOfClass(c.val, SC_LOWER_CLASS) ||
   1243 	  sc_isCharOfClass(c.val, SC_UPPER_CLASS); }
   1244 /*** META ((export #t)
   1245            (type bool)
   1246            (peephole (hole 1 "SC_NUMBER_CLASS.indexOf(" c ".val) != -1")))
   1247 */
   1248 function sc_isCharNumeric(c)
   1249     { return sc_isCharOfClass(c.val, SC_NUMBER_CLASS); }
   1250 /*** META ((export #t)
   1251            (type bool))
   1252 */
   1253 function sc_isCharWhitespace(c) {
   1254     var tmp = c.val;
   1255     return tmp === " " || tmp === "\r" || tmp === "\n" || tmp === "\t" || tmp === "\f";
   1256 }
   1257 /*** META ((export #t)
   1258            (type bool)
   1259            (peephole (hole 1 "SC_UPPER_CLASS.indexOf(" c ".val) != -1")))
   1260 */
   1261 function sc_isCharUpperCase(c)
   1262     { return sc_isCharOfClass(c.val, SC_UPPER_CLASS); }
   1263 /*** META ((export #t)
   1264            (type bool)
   1265            (peephole (hole 1 "SC_LOWER_CLASS.indexOf(" c ".val) != -1")))
   1266 */
   1267 function sc_isCharLowerCase(c)
   1268     { return sc_isCharOfClass(c.val, SC_LOWER_CLASS); }
   1269 
   1270 /*** META ((export #t)
   1271            (peephole (postfix ".val.charCodeAt(0)")))
   1272 */
   1273 function sc_char2integer(c)
   1274     { return c.val.charCodeAt(0); }
   1275 /*** META ((export #t)
   1276            (peephole (hole 1 "new sc_Char(String.fromCharCode(" n "))")))
   1277 */
   1278 function sc_integer2char(n)
   1279     { return new sc_Char(String.fromCharCode(n)); }
   1280 
   1281 /*** META ((export #t)
   1282            (peephole (hole 1 "new sc_Char(" c ".val.toUpperCase())")))
   1283 */
   1284 function sc_charUpcase(c)
   1285     { return new sc_Char(c.val.toUpperCase()); }
   1286 /*** META ((export #t)
   1287            (peephole (hole 1 "new sc_Char(" c ".val.toLowerCase())")))
   1288 */
   1289 function sc_charDowncase(c)
   1290     { return new sc_Char(c.val.toLowerCase()); }
   1291 
   1292 function sc_makeJSStringOfLength(k, c) {
   1293     var fill;
   1294     if (c === undefined)
   1295 	fill = " ";
   1296     else
   1297 	fill = c;
   1298     var res = "";
   1299     var len = 1;
   1300     // every round doubles the size of fill.
   1301     while (k >= len) {
   1302 	if (k & len)
   1303 	    res = res.concat(fill);
   1304 	fill = fill.concat(fill);
   1305 	len *= 2;
   1306     }
   1307     return res;
   1308 }
   1309 
   1310 function sc_makejsString(k, c) {
   1311     var fill;
   1312     if (c)
   1313 	fill = c.val;
   1314     else
   1315 	fill = " ";
   1316     return sc_makeJSStringOfLength(k, fill);
   1317 }
   1318 
   1319 function sc_jsstring2list(s) {
   1320     var res = null;
   1321     for (var i = s.length - 1; i >= 0; i--)
   1322 	res = sc_cons(new sc_Char(s.charAt(i)), res);
   1323     return res;
   1324 }
   1325 
   1326 function sc_list2jsstring(l) {
   1327     var a = new Array();
   1328     while(l !== null) {
   1329 	a.push(l.car.val);
   1330 	l = l.cdr;
   1331     }
   1332     return "".concat.apply("", a);
   1333 }
   1334 
   1335 var sc_Vector = Array;
   1336 
   1337 sc_Vector.prototype.sc_toWriteOrDisplayString = function(writeOrDisplay) {
   1338     if (this.length === 0) return "#()";
   1339 
   1340     var res = "#(" + writeOrDisplay(this[0]);
   1341     for (var i = 1; i < this.length; i++)
   1342 	res += " " + writeOrDisplay(this[i]);
   1343     res += ")";
   1344     return res;
   1345 };
   1346 sc_Vector.prototype.sc_toDisplayString = function() {
   1347     return this.sc_toWriteOrDisplayString(sc_toDisplayString);
   1348 };
   1349 sc_Vector.prototype.sc_toWriteString = function() {
   1350     return this.sc_toWriteOrDisplayString(sc_toWriteString);
   1351 };
   1352 
   1353 /*** META ((export vector? array?)
   1354            (type bool)
   1355            (peephole (postfix " instanceof sc_Vector")))
   1356 */
   1357 function sc_isVector(v) {
   1358     return (v instanceof sc_Vector);
   1359 }
   1360 
   1361 // only applies to vectors
   1362 function sc_isVectorEqual(v1, v2, comp) {
   1363     if (v1.length !== v2.length) return false;
   1364     for (var i = 0; i < v1.length; i++)
   1365 	if (!comp(v1[i], v2[i])) return false;
   1366     return true;
   1367 }
   1368 
   1369 /*** META ((export make-vector make-array)) */
   1370 function sc_makeVector(size, fill) {
   1371     var a = new sc_Vector(size);
   1372     if (fill !== undefined)
   1373 	sc_vectorFillBang(a, fill);
   1374     return a;
   1375 }
   1376 
   1377 /*** META ((export vector array)
   1378            (peephole (vector)))
   1379 */
   1380 function sc_vector() {
   1381     var a = new sc_Vector();
   1382     for (var i = 0; i < arguments.length; i++)
   1383 	a.push(arguments[i]);
   1384     return a;
   1385 }
   1386 
   1387 /*** META ((export vector-length array-length)
   1388            (peephole (postfix ".length")))
   1389 */
   1390 function sc_vectorLength(v) {
   1391     return v.length;
   1392 }
   1393 
   1394 /*** META ((export vector-ref array-ref)
   1395            (peephole (hole 2 v "[" pos "]")))
   1396 */
   1397 function sc_vectorRef(v, pos) {
   1398     return v[pos];
   1399 }
   1400 
   1401 /*** META ((export vector-set! array-set!)
   1402            (peephole (hole 3 v "[" pos "] = " val)))
   1403 */
   1404 function sc_vectorSetBang(v, pos, val) {
   1405     v[pos] = val;
   1406 }
   1407 
   1408 /*** META ((export vector->list array->list)) */
   1409 function sc_vector2list(a) {
   1410     var res = null;
   1411     for (var i = a.length-1; i >= 0; i--)
   1412 	res = sc_cons(a[i], res);
   1413     return res;
   1414 }
   1415 
   1416 /*** META ((export list->vector list->array)) */
   1417 function sc_list2vector(l) {
   1418     var a = new sc_Vector();
   1419     while(l !== null) {
   1420 	a.push(l.car);
   1421 	l = l.cdr;
   1422     }
   1423     return a;
   1424 }
   1425 
   1426 /*** META ((export vector-fill! array-fill!)) */
   1427 function sc_vectorFillBang(a, fill) {
   1428     for (var i = 0; i < a.length; i++)
   1429 	a[i] = fill;
   1430 }
   1431 
   1432 
   1433 /*** META ((export #t)) */
   1434 function sc_copyVector(a, len) {
   1435     if (len <= a.length)
   1436 	return a.slice(0, len);
   1437     else {
   1438 	var tmp = a.concat();
   1439 	tmp.length = len;
   1440 	return tmp;
   1441     }
   1442 }
   1443 
   1444 /*** META ((export #t)
   1445            (peephole (hole 3 a ".slice(" start "," end ")")))
   1446 */
   1447 function sc_vectorCopy(a, start, end) {
   1448     return a.slice(start, end);
   1449 }
   1450 
   1451 /*** META ((export #t)) */
   1452 function sc_vectorCopyBang(target, tstart, source, sstart, send) {
   1453     if (!sstart) sstart = 0;
   1454     if (!send) send = source.length;
   1455 
   1456     // if target == source we don't want to overwrite not yet copied elements.
   1457     if (tstart <= sstart) {
   1458 	for (var i = tstart, j = sstart; j < send; i++, j++) {
   1459 	    target[i] = source[j];
   1460 	}
   1461     } else {
   1462 	var diff = send - sstart;
   1463 	for (var i = tstart + diff - 1, j = send - 1;
   1464 	     j >= sstart;
   1465 	     i--, j--) {
   1466 	    target[i] = source[j];
   1467 	}
   1468     }
   1469     return target;
   1470 }
   1471 
   1472 /*** META ((export #t)
   1473            (type bool)
   1474            (peephole (hole 1 "typeof " o " === 'function'")))
   1475 */
   1476 function sc_isProcedure(o) {
   1477     return (typeof o === "function");
   1478 }
   1479 
   1480 /*** META ((export #t)) */
   1481 function sc_apply(proc) {
   1482     var args = new Array();
   1483     // first part of arguments are not in list-form.
   1484     for (var i = 1; i < arguments.length - 1; i++)
   1485 	args.push(arguments[i]);
   1486     var l = arguments[arguments.length - 1];
   1487     while (l !== null) {
   1488 	args.push(l.car);
   1489 	l = l.cdr;
   1490     }
   1491     return proc.apply(null, args);
   1492 }
   1493 
   1494 /*** META ((export #t)) */
   1495 function sc_map(proc, l1) {
   1496     if (l1 === undefined)
   1497 	return null;
   1498     // else
   1499     var nbApplyArgs = arguments.length - 1;
   1500     var applyArgs = new Array(nbApplyArgs);
   1501     var revres = null;
   1502     while (l1 !== null) {
   1503 	for (var i = 0; i < nbApplyArgs; i++) {
   1504 	    applyArgs[i] = arguments[i + 1].car;
   1505 	    arguments[i + 1] = arguments[i + 1].cdr;
   1506 	}
   1507 	revres = sc_cons(proc.apply(null, applyArgs), revres);
   1508     }
   1509     return sc_reverseAppendBang(revres, null);
   1510 }
   1511 
   1512 /*** META ((export #t)) */
   1513 function sc_mapBang(proc, l1) {
   1514     if (l1 === undefined)
   1515 	return null;
   1516     // else
   1517     var l1_orig = l1;
   1518     var nbApplyArgs = arguments.length - 1;
   1519     var applyArgs = new Array(nbApplyArgs);
   1520     while (l1 !== null) {
   1521 	var tmp = l1;
   1522 	for (var i = 0; i < nbApplyArgs; i++) {
   1523 	    applyArgs[i] = arguments[i + 1].car;
   1524 	    arguments[i + 1] = arguments[i + 1].cdr;
   1525 	}
   1526 	tmp.car = proc.apply(null, applyArgs);
   1527     }
   1528     return l1_orig;
   1529 }
   1530      
   1531 /*** META ((export #t)) */
   1532 function sc_forEach(proc, l1) {
   1533     if (l1 === undefined)
   1534 	return undefined;
   1535     // else
   1536     var nbApplyArgs = arguments.length - 1;
   1537     var applyArgs = new Array(nbApplyArgs);
   1538     while (l1 !== null) {
   1539 	for (var i = 0; i < nbApplyArgs; i++) {
   1540 	    applyArgs[i] = arguments[i + 1].car;
   1541 	    arguments[i + 1] = arguments[i + 1].cdr;
   1542 	}
   1543 	proc.apply(null, applyArgs);
   1544     }
   1545     // add return so FF does not complain.
   1546     return undefined;
   1547 }
   1548 
   1549 /*** META ((export #t)) */
   1550 function sc_filter(proc, l1) {
   1551     var dummy = { cdr : null };
   1552     var tail = dummy;
   1553     while (l1 !== null) {
   1554 	if (proc(l1.car) !== false) {
   1555 	    tail.cdr = sc_cons(l1.car, null);
   1556 	    tail = tail.cdr;
   1557 	}
   1558 	l1 = l1.cdr;
   1559     }
   1560     return dummy.cdr;
   1561 }
   1562 
   1563 /*** META ((export #t)) */
   1564 function sc_filterBang(proc, l1) {
   1565     var head = sc_cons("dummy", l1);
   1566     var it = head;
   1567     var next = l1;
   1568     while (next !== null) {
   1569         if (proc(next.car) !== false) {
   1570 	    it.cdr = next
   1571 	    it = next;
   1572 	}
   1573 	next = next.cdr;
   1574     }
   1575     it.cdr = null;
   1576     return head.cdr;
   1577 }
   1578 
   1579 function sc_filterMap1(proc, l1) {
   1580     var revres = null;
   1581     while (l1 !== null) {
   1582         var tmp = proc(l1.car)
   1583         if (tmp !== false) revres = sc_cons(tmp, revres);
   1584         l1 = l1.cdr;
   1585     }
   1586     return sc_reverseAppendBang(revres, null);
   1587 }
   1588 function sc_filterMap2(proc, l1, l2) {
   1589     var revres = null;
   1590     while (l1 !== null) {
   1591         var tmp = proc(l1.car, l2.car);
   1592         if(tmp !== false) revres = sc_cons(tmp, revres);
   1593 	l1 = l1.cdr;
   1594 	l2 = l2.cdr
   1595     }
   1596     return sc_reverseAppendBang(revres, null);
   1597 }
   1598 
   1599 /*** META ((export #t)) */
   1600 function sc_filterMap(proc, l1, l2, l3) {
   1601     if (l2 === undefined)
   1602 	return sc_filterMap1(proc, l1);
   1603     else if (l3 === undefined)
   1604 	return sc_filterMap2(proc, l1, l2);
   1605     // else
   1606     var nbApplyArgs = arguments.length - 1;
   1607     var applyArgs = new Array(nbApplyArgs);
   1608     var revres = null;
   1609     while (l1 !== null) {
   1610 	for (var i = 0; i < nbApplyArgs; i++) {
   1611 	    applyArgs[i] = arguments[i + 1].car;
   1612 	    arguments[i + 1] = arguments[i + 1].cdr;
   1613 	}
   1614 	var tmp = proc.apply(null, applyArgs);
   1615 	if(tmp !== false) revres = sc_cons(tmp, revres);
   1616     }
   1617     return sc_reverseAppendBang(revres, null);
   1618 }
   1619 
   1620 /*** META ((export #t)) */
   1621 function sc_any(proc, l) {
   1622     var revres = null;
   1623     while (l !== null) {
   1624         var tmp = proc(l.car);
   1625         if(tmp !== false) return tmp;
   1626 	l = l.cdr;
   1627     }
   1628     return false;
   1629 }
   1630 
   1631 /*** META ((export any?)
   1632            (peephole (hole 2 "sc_any(" proc "," l ") !== false")))
   1633 */
   1634 function sc_anyPred(proc, l) {
   1635     return sc_any(proc, l)!== false;
   1636 }
   1637 
   1638 /*** META ((export #t)) */
   1639 function sc_every(proc, l) {
   1640     var revres = null;
   1641     var tmp = true;
   1642     while (l !== null) {
   1643         tmp = proc(l.car);
   1644         if (tmp === false) return false;
   1645 	l = l.cdr;
   1646     }
   1647     return tmp;
   1648 }
   1649 
   1650 /*** META ((export every?)
   1651            (peephole (hole 2 "sc_every(" proc "," l ") !== false")))
   1652 */
   1653 function sc_everyPred(proc, l) {
   1654     var tmp = sc_every(proc, l);
   1655     if (tmp !== false) return true;
   1656     return false;
   1657 }
   1658 
   1659 /*** META ((export #t)
   1660            (peephole (postfix "()")))
   1661 */
   1662 function sc_force(o) {
   1663     return o();
   1664 }
   1665 
   1666 /*** META ((export #t)) */
   1667 function sc_makePromise(proc) {
   1668     var isResultReady = false;
   1669     var result = undefined;
   1670     return function() {
   1671 	if (!isResultReady) {
   1672 	    var tmp = proc();
   1673 	    if (!isResultReady) {
   1674 		isResultReady = true;
   1675 		result = tmp;
   1676 	    }
   1677 	}
   1678 	return result;
   1679     };
   1680 }
   1681 
   1682 function sc_Values(values) {
   1683     this.values = values;
   1684 }
   1685 
   1686 /*** META ((export #t)
   1687            (peephole (values)))
   1688 */
   1689 function sc_values() {
   1690     if (arguments.length === 1)
   1691 	return arguments[0];
   1692     else
   1693 	return new sc_Values(arguments);
   1694 }
   1695 
   1696 /*** META ((export #t)) */
   1697 function sc_callWithValues(producer, consumer) {
   1698     var produced = producer();
   1699     if (produced instanceof sc_Values)
   1700 	return consumer.apply(null, produced.values);
   1701     else
   1702 	return consumer(produced);
   1703 }
   1704 
   1705 /*** META ((export #t)) */
   1706 function sc_dynamicWind(before, thunk, after) {
   1707     before();
   1708     try {
   1709 	var res = thunk();
   1710 	return res;
   1711     } finally {
   1712 	after();
   1713     }
   1714 }
   1715 
   1716 
   1717 // TODO: eval/scheme-report-environment/null-environment/interaction-environment
   1718 
   1719 // LIMITATION: 'load' doesn't exist without files.
   1720 // LIMITATION: transcript-on/transcript-off doesn't exist without files.
   1721 
   1722 
   1723 function sc_Struct(name) {
   1724     this.name = name;
   1725 }
   1726 sc_Struct.prototype.sc_toDisplayString = function() {
   1727     return "#<struct" + sc_hash(this) + ">";
   1728 };
   1729 sc_Struct.prototype.sc_toWriteString = sc_Struct.prototype.sc_toDisplayString;
   1730 
   1731 /*** META ((export #t)
   1732            (peephole (hole 1 "new sc_Struct(" name ")")))
   1733 */
   1734 function sc_makeStruct(name) {
   1735     return new sc_Struct(name);
   1736 }
   1737 
   1738 /*** META ((export #t)
   1739            (type bool)
   1740            (peephole (postfix " instanceof sc_Struct")))
   1741 */
   1742 function sc_isStruct(o) {
   1743     return (o instanceof sc_Struct);
   1744 }
   1745 
   1746 /*** META ((export #t)
   1747            (type bool)
   1748            (peephole (hole 2 "(" 1 " instanceof sc_Struct) && ( " 1 ".name === " 0 ")")))
   1749 */
   1750 function sc_isStructNamed(name, s) {
   1751     return ((s instanceof sc_Struct) && (s.name === name));
   1752 }
   1753 
   1754 /*** META ((export struct-field)
   1755            (peephole (hole 3 0 "[" 2 "]")))
   1756 */
   1757 function sc_getStructField(s, name, field) {
   1758     return s[field];
   1759 }
   1760 
   1761 /*** META ((export struct-field-set!)
   1762            (peephole (hole 4 0 "[" 2 "] = " 3)))
   1763 */
   1764 function sc_setStructFieldBang(s, name, field, val) {
   1765     s[field] = val;
   1766 }
   1767 
   1768 /*** META ((export #t)
   1769            (peephole (prefix "~")))
   1770 */
   1771 function sc_bitNot(x) {
   1772     return ~x;
   1773 }
   1774 
   1775 /*** META ((export #t)
   1776            (peephole (infix 2 2 "&")))
   1777 */
   1778 function sc_bitAnd(x, y) {
   1779     return x & y;
   1780 }
   1781 
   1782 /*** META ((export #t)
   1783            (peephole (infix 2 2 "|")))
   1784 */
   1785 function sc_bitOr(x, y) {
   1786     return x | y;
   1787 }
   1788 
   1789 /*** META ((export #t)
   1790            (peephole (infix 2 2 "^")))
   1791 */
   1792 function sc_bitXor(x, y) {
   1793     return x ^ y;
   1794 }
   1795 
   1796 /*** META ((export #t)
   1797            (peephole (infix 2 2 "<<")))
   1798 */
   1799 function sc_bitLsh(x, y) {
   1800     return x << y;
   1801 }
   1802 
   1803 /*** META ((export #t)
   1804            (peephole (infix 2 2 ">>")))
   1805 */
   1806 function sc_bitRsh(x, y) {
   1807     return x >> y;
   1808 }
   1809 
   1810 /*** META ((export #t)
   1811            (peephole (infix 2 2 ">>>")))
   1812 */
   1813 function sc_bitUrsh(x, y) {
   1814     return x >>> y;
   1815 }
   1816 
   1817 /*** META ((export js-field js-property)
   1818            (peephole (hole 2 o "[" field "]")))
   1819 */
   1820 function sc_jsField(o, field) {
   1821     return o[field];
   1822 }
   1823 
   1824 /*** META ((export js-field-set! js-property-set!)
   1825            (peephole (hole 3 o "[" field "] = " val)))
   1826 */
   1827 function sc_setJsFieldBang(o, field, val) {
   1828     return o[field] = val;
   1829 }
   1830 
   1831 /*** META ((export js-field-delete! js-property-delete!)
   1832            (peephole (hole 2 "delete" o "[" field "]")))
   1833 */
   1834 function sc_deleteJsFieldBang(o, field) {
   1835     delete o[field];
   1836 }
   1837 
   1838 /*** META ((export #t)
   1839            (peephole (jsCall)))
   1840 */
   1841 function sc_jsCall(o, fun) {
   1842     var args = new Array();
   1843     for (var i = 2; i < arguments.length; i++)
   1844 	args[i-2] = arguments[i];
   1845     return fun.apply(o, args);
   1846 }
   1847 
   1848 /*** META ((export #t)
   1849            (peephole (jsMethodCall)))
   1850 */
   1851 function sc_jsMethodCall(o, field) {
   1852     var args = new Array();
   1853     for (var i = 2; i < arguments.length; i++)
   1854 	args[i-2] = arguments[i];
   1855     return o[field].apply(o, args);
   1856 }
   1857 
   1858 /*** META ((export new js-new)
   1859            (peephole (jsNew)))
   1860 */
   1861 function sc_jsNew(c) {
   1862     var evalStr = "new c(";
   1863     evalStr +=arguments.length > 1? "arguments[1]": "";
   1864     for (var i = 2; i < arguments.length; i++)
   1865 	evalStr += ", arguments[" + i + "]";
   1866     evalStr +=")";
   1867     return eval(evalStr);
   1868 }    
   1869 
   1870 // ======================== RegExp ====================
   1871 /*** META ((export #t)) */
   1872 function sc_pregexp(re) {
   1873     return new RegExp(sc_string2jsstring(re));
   1874 }
   1875 
   1876 /*** META ((export #t)) */
   1877 function sc_pregexpMatch(re, s) {
   1878     var reg = (re instanceof RegExp) ? re : sc_pregexp(re);
   1879     var tmp = reg.exec(sc_string2jsstring(s));
   1880     
   1881     if (tmp == null) return false;
   1882     
   1883     var res = null;
   1884     for (var i = tmp.length-1; i >= 0; i--) {
   1885 	if (tmp[i] !== null) {
   1886 	    res = sc_cons(sc_jsstring2string(tmp[i]), res);
   1887 	} else {
   1888 	    res = sc_cons(false, res);
   1889 	}
   1890     }
   1891     return res;
   1892 }
   1893    
   1894 /*** META ((export #t)) */
   1895 function sc_pregexpReplace(re, s1, s2) {
   1896    var reg;
   1897    var jss1 = sc_string2jsstring(s1);
   1898    var jss2 = sc_string2jsstring(s2);
   1899 
   1900    if (re instanceof RegExp) {
   1901        if (re.global)
   1902 	   reg = re;
   1903        else
   1904 	   reg = new RegExp(re.source);
   1905    } else {
   1906        reg = new RegExp(sc_string2jsstring(re));
   1907    }
   1908 
   1909    return jss1.replace(reg, jss2);
   1910 }
   1911    
   1912 /*** META ((export pregexp-replace*)) */
   1913 function sc_pregexpReplaceAll(re, s1, s2) {
   1914    var reg;
   1915    var jss1 = sc_string2jsstring(s1);
   1916    var jss2 = sc_string2jsstring(s2);
   1917 
   1918    if (re instanceof RegExp) {
   1919       if (re.global)
   1920 	  reg = re;
   1921       else
   1922 	  reg = new RegExp(re.source, "g");
   1923    } else {
   1924        reg = new RegExp(sc_string2jsstring(re), "g");
   1925    }
   1926 
   1927    return jss1.replace(reg, jss2);
   1928 }
   1929 
   1930 /*** META ((export #t)) */
   1931 function sc_pregexpSplit(re, s) {
   1932    var reg = ((re instanceof RegExp) ?
   1933 	      re :
   1934 	      new RegExp(sc_string2jsstring(re)));
   1935    var jss = sc_string2jsstring(s);
   1936    var tmp = jss.split(reg);
   1937 
   1938    if (tmp == null) return false;
   1939 
   1940    return sc_vector2list(tmp);
   1941 }
   1942    
   1943 
   1944 /* =========================================================================== */
   1945 /* Other library stuff */
   1946 /* =========================================================================== */
   1947 
   1948 /*** META ((export #t)
   1949            (peephole (hole 1 "Math.floor(Math.random()*" 'n ")")))
   1950 */
   1951 function sc_random(n) {
   1952     return Math.floor(Math.random()*n);
   1953 }
   1954 
   1955 /*** META ((export current-date)
   1956            (peephole (hole 0 "new Date()")))
   1957 */
   1958 function sc_currentDate() {
   1959    return new Date();
   1960 }
   1961 
   1962 function sc_Hashtable() {
   1963 }
   1964 sc_Hashtable.prototype.toString = function() {
   1965     return "#{%hashtable}";
   1966 };
   1967 // sc_toWriteString == sc_toDisplayString == toString
   1968 
   1969 function sc_HashtableElement(key, val) {
   1970     this.key = key;
   1971     this.val = val;
   1972 }
   1973 
   1974 /*** META ((export #t)
   1975            (peephole (hole 0 "new sc_Hashtable()")))
   1976 */
   1977 function sc_makeHashtable() {
   1978     return new sc_Hashtable();
   1979 }
   1980 
   1981 /*** META ((export #t)) */
   1982 function sc_hashtablePutBang(ht, key, val) {
   1983     var hash = sc_hash(key);
   1984     ht[hash] = new sc_HashtableElement(key, val);
   1985 }
   1986 
   1987 /*** META ((export #t)) */
   1988 function sc_hashtableGet(ht, key) {
   1989     var hash = sc_hash(key);
   1990     if (hash in ht)
   1991 	return ht[hash].val;
   1992     else
   1993 	return false;
   1994 }
   1995 
   1996 /*** META ((export #t)) */
   1997 function sc_hashtableForEach(ht, f) {
   1998     for (var v in ht) {
   1999 	if (ht[v] instanceof sc_HashtableElement)
   2000 	    f(ht[v].key, ht[v].val);
   2001     }
   2002 }
   2003 
   2004 /*** META ((export hashtable-contains?)
   2005            (peephole (hole 2 "sc_hash(" 1 ") in " 0)))
   2006 */
   2007 function sc_hashtableContains(ht, key) {
   2008     var hash = sc_hash(key);
   2009     if (hash in ht)
   2010 	return true;
   2011     else
   2012 	return false;
   2013 }
   2014 
   2015 var SC_HASH_COUNTER = 0;
   2016 
   2017 function sc_hash(o) {
   2018     if (o === null)
   2019 	return "null";
   2020     else if (o === undefined)
   2021 	return "undefined";
   2022     else if (o === true)
   2023 	return "true";
   2024     else if (o === false)
   2025 	return "false";
   2026     else if (typeof o === "number")
   2027 	return "num-" + o;
   2028     else if (typeof o === "string")
   2029 	return "jsstr-" + o;
   2030     else if (o.sc_getHash)
   2031 	return o.sc_getHash();
   2032     else
   2033 	return sc_counterHash.call(o);
   2034 }
   2035 function sc_counterHash() {
   2036     if (!this.sc_hash) {
   2037 	this.sc_hash = "hash-" + SC_HASH_COUNTER;
   2038 	SC_HASH_COUNTER++;
   2039     }
   2040     return this.sc_hash;
   2041 }
   2042 
   2043 function sc_Trampoline(args, maxTailCalls) {
   2044     this['__trampoline return__'] = true;
   2045     this.args = args;
   2046     this.MAX_TAIL_CALLs = maxTailCalls;
   2047 }
   2048 // TODO: call/cc stuff
   2049 sc_Trampoline.prototype.restart = function() {
   2050     var o = this;
   2051     while (true) {
   2052 	// set both globals.
   2053 	SC_TAIL_OBJECT.calls = o.MAX_TAIL_CALLs-1;
   2054 	var fun = o.args.callee;
   2055 	var res = fun.apply(SC_TAIL_OBJECT, o.args);
   2056 	if (res instanceof sc_Trampoline)
   2057 	    o = res;
   2058 	else
   2059 	    return res;
   2060     }
   2061 }
   2062 
   2063 /*** META ((export bind-exit-lambda)) */
   2064 function sc_bindExitLambda(proc) {
   2065     var escape_obj = new sc_BindExitException();
   2066     var escape = function(res) {
   2067 	escape_obj.res = res;
   2068 	throw escape_obj;
   2069     };
   2070     try {
   2071 	return proc(escape);
   2072     } catch(e) {
   2073 	if (e === escape_obj) {
   2074 	    return e.res;
   2075 	}
   2076 	throw e;
   2077     }
   2078 }
   2079 function sc_BindExitException() {
   2080     this._internalException = true;
   2081 }
   2082 
   2083 var SC_SCM2JS_GLOBALS = new Object();
   2084 
   2085 // default tail-call depth.
   2086 // normally the program should set it again. but just in case...
   2087 var SC_TAIL_OBJECT = new Object();
   2088 SC_SCM2JS_GLOBALS.TAIL_OBJECT = SC_TAIL_OBJECT;
   2089 // ======================== I/O =======================
   2090 
   2091 /*------------------------------------------------------------------*/
   2092 
   2093 function sc_EOF() {
   2094 }
   2095 var SC_EOF_OBJECT = new sc_EOF();
   2096 
   2097 function sc_Port() {
   2098 }
   2099 
   2100 /* --------------- Input ports -------------------------------------*/
   2101 
   2102 function sc_InputPort() {
   2103 }
   2104 sc_InputPort.prototype = new sc_Port();
   2105 
   2106 sc_InputPort.prototype.peekChar = function() {
   2107     if (!("peeked" in this))
   2108 	this.peeked = this.getNextChar();
   2109     return this.peeked;
   2110 }
   2111 sc_InputPort.prototype.readChar = function() {
   2112     var tmp = this.peekChar();
   2113     delete this.peeked;
   2114     return tmp;
   2115 }
   2116 sc_InputPort.prototype.isCharReady = function() {
   2117     return true;
   2118 }
   2119 sc_InputPort.prototype.close = function() {
   2120     // do nothing
   2121 }
   2122 
   2123 /* .............. String port ..........................*/
   2124 function sc_ErrorInputPort() {
   2125 };
   2126 sc_ErrorInputPort.prototype = new sc_InputPort();
   2127 sc_ErrorInputPort.prototype.getNextChar = function() {
   2128     throw "can't read from error-port.";
   2129 };
   2130 sc_ErrorInputPort.prototype.isCharReady = function() {
   2131     return false;
   2132 };
   2133     
   2134 
   2135 /* .............. String port ..........................*/
   2136 
   2137 function sc_StringInputPort(jsStr) {
   2138     // we are going to do some charAts on the str.
   2139     // instead of recreating all the time a String-object, we
   2140     // create one in the beginning. (not sure, if this is really an optim)
   2141     this.str = new String(jsStr);
   2142     this.pos = 0;
   2143 }
   2144 sc_StringInputPort.prototype = new sc_InputPort();
   2145 sc_StringInputPort.prototype.getNextChar = function() {
   2146     if (this.pos >= this.str.length)
   2147 	return SC_EOF_OBJECT;
   2148     return this.str.charAt(this.pos++);
   2149 };
   2150 
   2151 /* ------------- Read and other lib-funs  -------------------------------*/
   2152 function sc_Token(type, val, pos) {
   2153     this.type = type;
   2154     this.val = val;
   2155     this.pos = pos;
   2156 }
   2157 sc_Token.EOF = 0/*EOF*/;
   2158 sc_Token.OPEN_PAR = 1/*OPEN_PAR*/;
   2159 sc_Token.CLOSE_PAR = 2/*CLOSE_PAR*/;
   2160 sc_Token.OPEN_BRACE = 3/*OPEN_BRACE*/;
   2161 sc_Token.CLOSE_BRACE = 4/*CLOSE_BRACE*/;
   2162 sc_Token.OPEN_BRACKET = 5/*OPEN_BRACKET*/;
   2163 sc_Token.CLOSE_BRACKET = 6/*CLOSE_BRACKET*/;
   2164 sc_Token.WHITESPACE = 7/*WHITESPACE*/;
   2165 sc_Token.QUOTE = 8/*QUOTE*/;
   2166 sc_Token.ID = 9/*ID*/;
   2167 sc_Token.DOT = 10/*DOT*/;
   2168 sc_Token.STRING = 11/*STRING*/;
   2169 sc_Token.NUMBER = 12/*NUMBER*/;
   2170 sc_Token.ERROR = 13/*ERROR*/;
   2171 sc_Token.VECTOR_BEGIN = 14/*VECTOR_BEGIN*/;
   2172 sc_Token.TRUE = 15/*TRUE*/;
   2173 sc_Token.FALSE = 16/*FALSE*/;
   2174 sc_Token.UNSPECIFIED = 17/*UNSPECIFIED*/;
   2175 sc_Token.REFERENCE = 18/*REFERENCE*/;
   2176 sc_Token.STORE = 19/*STORE*/;
   2177 sc_Token.CHAR = 20/*CHAR*/;
   2178 
   2179 var SC_ID_CLASS = SC_LOWER_CLASS + SC_UPPER_CLASS + "!$%*+-./:<=>?@^_~";
   2180 function sc_Tokenizer(port) {
   2181     this.port = port;
   2182 }
   2183 sc_Tokenizer.prototype.peekToken = function() {
   2184     if (this.peeked)
   2185 	return this.peeked;
   2186     var newToken = this.nextToken();
   2187     this.peeked = newToken;
   2188     return newToken;
   2189 };
   2190 sc_Tokenizer.prototype.readToken = function() {
   2191     var tmp = this.peekToken();
   2192     delete this.peeked;
   2193     return tmp;
   2194 };
   2195 sc_Tokenizer.prototype.nextToken = function() {
   2196     var port = this.port;
   2197     
   2198     function isNumberChar(c) {
   2199 	return (c >= "0" && c <= "9");
   2200     };
   2201     function isIdOrNumberChar(c) {
   2202 	return SC_ID_CLASS.indexOf(c) != -1 || // ID-char
   2203 	    (c >= "0" && c <= "9");
   2204     }
   2205     function isWhitespace(c) {
   2206 	return c === " " || c === "\r" || c === "\n" || c === "\t" || c === "\f";
   2207     };
   2208     function isWhitespaceOrEOF(c) {
   2209 	return isWhitespace(c) || c === SC_EOF_OBJECT;
   2210     };
   2211 
   2212     function readString() {
   2213 	res = "";
   2214 	while (true) {
   2215 	    var c = port.readChar();
   2216 	    switch (c) {
   2217 	    case '"':
   2218 		return new sc_Token(11/*STRING*/, res);
   2219 	    case "\\":
   2220 		var tmp = port.readChar();
   2221 		switch (tmp) {
   2222 		case '0': res += "\0"; break;
   2223 		case 'a': res += "\a"; break;
   2224 		case 'b': res += "\b"; break;
   2225 		case 'f': res += "\f"; break;
   2226 		case 'n': res += "\n"; break;
   2227 		case 'r': res += "\r"; break;
   2228 		case 't': res += "\t"; break;
   2229 		case 'v': res += "\v"; break;
   2230 		case '"': res += '"'; break;
   2231 		case '\\': res += '\\'; break;
   2232 		case 'x':
   2233 		    /* hexa-number */
   2234 		    var nb = 0;
   2235 		    while (true) {
   2236 			var hexC = port.peekChar();
   2237 			if (hexC >= '0' && hexC <= '9') {
   2238 			    port.readChar();
   2239 			    nb = nb * 16 + hexC.charCodeAt(0) - '0'.charCodeAt(0);
   2240 			} else if (hexC >= 'a' && hexC <= 'f') {
   2241 			    port.readChar();
   2242 			    nb = nb * 16 + hexC.charCodeAt(0) - 'a'.charCodeAt(0);
   2243 			} else if (hexC >= 'A' && hexC <= 'F') {
   2244 			    port.readChar();
   2245 			    nb = nb * 16 + hexC.charCodeAt(0) - 'A'.charCodeAt(0);
   2246 			} else {
   2247 			    // next char isn't part of hex.
   2248 			    res += String.fromCharCode(nb);
   2249 			    break;
   2250 			}
   2251 		    }
   2252 		    break;
   2253 		default:
   2254 		    if (tmp === SC_EOF_OBJECT) {
   2255 			return new sc_Token(13/*ERROR*/, "unclosed string-literal" + res);
   2256 		    }
   2257 		    res += tmp;
   2258 		}
   2259 		break;
   2260 	    default:
   2261 		if (c === SC_EOF_OBJECT) {
   2262 		    return new sc_Token(13/*ERROR*/, "unclosed string-literal" + res);
   2263 		}
   2264 		res += c;
   2265 	    }
   2266 	}
   2267     };
   2268     function readIdOrNumber(firstChar) {
   2269 	var res = firstChar;
   2270 	while (isIdOrNumberChar(port.peekChar()))
   2271 	    res += port.readChar();
   2272 	if (isNaN(res))
   2273 	    return new sc_Token(9/*ID*/, res);
   2274 	else
   2275 	    return new sc_Token(12/*NUMBER*/, res - 0);
   2276     };
   2277     
   2278     function skipWhitespaceAndComments() {
   2279 	var done = false;
   2280 	while (!done) {
   2281 	    done = true;
   2282 	    while (isWhitespace(port.peekChar()))
   2283 		port.readChar();
   2284 	    if (port.peekChar() === ';') {
   2285 		port.readChar();
   2286 		done = false;
   2287 		while (true) {
   2288 		    curChar = port.readChar();
   2289 		    if (curChar === SC_EOF_OBJECT ||
   2290 			curChar === '\n')
   2291 			break;
   2292 		}
   2293 	    }
   2294 	}
   2295     };
   2296     
   2297     function readDot() {
   2298 	if (isWhitespace(port.peekChar()))
   2299 	    return new sc_Token(10/*DOT*/);
   2300 	else
   2301 	    return readIdOrNumber(".");
   2302     };
   2303 
   2304     function readSharp() {
   2305 	var c = port.readChar();
   2306 	if (isWhitespace(c))
   2307 	    return new sc_Token(13/*ERROR*/, "bad #-pattern0.");
   2308 
   2309 	// reference
   2310 	if (isNumberChar(c)) {
   2311 	    var nb = c - 0;
   2312 	    while (isNumberChar(port.peekChar()))
   2313 		nb = nb*10 + (port.readChar() - 0);
   2314 	    switch (port.readChar()) {
   2315 	    case '#':
   2316 		return new sc_Token(18/*REFERENCE*/, nb);
   2317 	    case '=':
   2318 		return new sc_Token(19/*STORE*/, nb);
   2319 	    default:
   2320 		return new sc_Token(13/*ERROR*/, "bad #-pattern1." + nb);
   2321 	    }
   2322 	}
   2323 
   2324 	if (c === "(")
   2325 	    return new sc_Token(14/*VECTOR_BEGIN*/);
   2326 	
   2327 	if (c === "\\") { // character
   2328 	    var tmp = ""
   2329 	    while (!isWhitespaceOrEOF(port.peekChar()))
   2330 		tmp += port.readChar();
   2331 	    switch (tmp.length) {
   2332 	    case 0: // it's escaping a whitespace char:
   2333 		if (sc_isEOFObject(port.peekChar))
   2334 		    return new sc_Token(13/*ERROR*/, "bad #-pattern2.");
   2335 		else
   2336 		    return new sc_Token(20/*CHAR*/, port.readChar());
   2337 	    case 1:
   2338 		return new sc_Token(20/*CHAR*/, tmp);
   2339 	    default:
   2340 		var entry = sc_Char.readable2char[tmp.toLowerCase()];
   2341 		if (entry)
   2342 		    return new sc_Token(20/*CHAR*/, entry);
   2343 		else
   2344 		    return new sc_Token(13/*ERROR*/, "unknown character description: #\\" + tmp);
   2345 	    }
   2346 	}
   2347 
   2348 	// some constants (#t, #f, #unspecified)
   2349 	var res;
   2350 	var needing;
   2351 	switch (c) {
   2352 	case 't': res = new sc_Token(15/*TRUE*/, true); needing = ""; break;
   2353 	case 'f': res = new sc_Token(16/*FALSE*/, false); needing = ""; break;
   2354 	case 'u': res = new sc_Token(17/*UNSPECIFIED*/, undefined); needing = "nspecified"; break;
   2355 	default:
   2356 	    return new sc_Token(13/*ERROR*/, "bad #-pattern3: " + c);
   2357 	}
   2358 	while(true) {
   2359 	    c = port.peekChar();
   2360 	    if ((isWhitespaceOrEOF(c) || c === ')') &&
   2361 		needing == "")
   2362 		return res;
   2363 	    else if (isWhitespace(c) || needing == "")
   2364 		return new sc_Token(13/*ERROR*/, "bad #-pattern4 " + c + " " + needing);
   2365 	    else if (needing.charAt(0) == c) {
   2366 		port.readChar(); // consume
   2367 		needing = needing.slice(1);
   2368 	    } else
   2369 		return new sc_Token(13/*ERROR*/, "bad #-pattern5");
   2370 	}
   2371 	
   2372     };
   2373 
   2374     skipWhitespaceAndComments();
   2375     var curChar = port.readChar();
   2376     if (curChar === SC_EOF_OBJECT)
   2377 	return new sc_Token(0/*EOF*/, curChar);
   2378     switch (curChar)
   2379     {
   2380     case " ":
   2381     case "\n":
   2382     case "\t":
   2383 	return readWhitespace();
   2384     case "(":
   2385 	return new sc_Token(1/*OPEN_PAR*/);
   2386     case ")":
   2387 	return new sc_Token(2/*CLOSE_PAR*/);
   2388     case "{":
   2389 	return new sc_Token(3/*OPEN_BRACE*/);
   2390     case "}":
   2391 	return new sc_Token(4/*CLOSE_BRACE*/);
   2392     case "[":
   2393 	return new sc_Token(5/*OPEN_BRACKET*/);
   2394     case "]":
   2395 	return new sc_Token(6/*CLOSE_BRACKET*/);
   2396     case "'":
   2397 	return new sc_Token(8/*QUOTE*/);
   2398     case "#":
   2399 	return readSharp();
   2400     case ".":
   2401 	return readDot();
   2402     case '"':
   2403 	return readString();
   2404     default:
   2405 	if (isIdOrNumberChar(curChar))
   2406 	    return readIdOrNumber(curChar);
   2407 	throw "unexpected character: " + curChar;
   2408     }
   2409 };
   2410 
   2411 function sc_Reader(tokenizer) {
   2412     this.tokenizer = tokenizer;
   2413     this.backref = new Array();
   2414 }
   2415 sc_Reader.prototype.read = function() {
   2416     function readList(listBeginType) {
   2417 	function matchesPeer(open, close) {
   2418 	    return open === 1/*OPEN_PAR*/ && close === 2/*CLOSE_PAR*/
   2419 	    	|| open === 3/*OPEN_BRACE*/ && close === 4/*CLOSE_BRACE*/
   2420 		|| open === 5/*OPEN_BRACKET*/ && close === 6/*CLOSE_BRACKET*/;
   2421 	};
   2422 	var res = null;
   2423 
   2424 	while (true) {
   2425 	    var token = tokenizer.peekToken();
   2426 	    
   2427 	    switch (token.type) {
   2428 	    case 2/*CLOSE_PAR*/:
   2429 	    case 4/*CLOSE_BRACE*/:
   2430 	    case 6/*CLOSE_BRACKET*/:
   2431 		if (matchesPeer(listBeginType, token.type)) {
   2432 		    tokenizer.readToken(); // consume token
   2433 		    return sc_reverseBang(res);
   2434 		} else
   2435 		    throw "closing par doesn't match: " + listBeginType
   2436 			+ " " + listEndType;
   2437 
   2438 	    case 0/*EOF*/:
   2439 		throw "unexpected end of file";
   2440 
   2441 	    case 10/*DOT*/:
   2442 		tokenizer.readToken(); // consume token
   2443 		var cdr = this.read();
   2444 		var par = tokenizer.readToken();
   2445 		if (!matchesPeer(listBeginType, par.type))
   2446 		    throw "closing par doesn't match: " + listBeginType
   2447 			+ " " + par.type;
   2448 		else
   2449 		    return sc_reverseAppendBang(res, cdr);
   2450 		
   2451 
   2452 	    default:
   2453 		res = sc_cons(this.read(), res);
   2454 	    }
   2455 	}
   2456     };
   2457     function readQuote() {
   2458 	return sc_cons("quote", sc_cons(this.read(), null));
   2459     };
   2460     function readVector() {
   2461 	// opening-parenthesis is already consumed
   2462 	var a = new Array();
   2463 	while (true) {
   2464 	    var token = tokenizer.peekToken();
   2465 	    switch (token.type) {
   2466 	    case 2/*CLOSE_PAR*/:
   2467 		tokenizer.readToken();
   2468 		return a;
   2469 		
   2470 	    default:
   2471 		a.push(this.read());
   2472 	    }
   2473 	}
   2474     };
   2475 
   2476     function storeRefence(nb) {
   2477 	var tmp = this.read();
   2478 	this.backref[nb] = tmp;
   2479 	return tmp;
   2480     };
   2481 	
   2482     function readReference(nb) {
   2483 	if (nb in this.backref)
   2484 	    return this.backref[nb];
   2485 	else
   2486 	    throw "bad reference: " + nb;
   2487     };
   2488     
   2489     var tokenizer = this.tokenizer;
   2490 
   2491     var token = tokenizer.readToken();
   2492 
   2493     // handle error
   2494     if (token.type === 13/*ERROR*/)
   2495 	throw token.val;
   2496     
   2497     switch (token.type) {
   2498     case 1/*OPEN_PAR*/:
   2499     case 3/*OPEN_BRACE*/:
   2500     case 5/*OPEN_BRACKET*/:
   2501 	return readList.call(this, token.type);
   2502     case 8/*QUOTE*/:
   2503 	return readQuote.call(this);
   2504     case 11/*STRING*/:
   2505 	return sc_jsstring2string(token.val);
   2506     case 20/*CHAR*/:
   2507 	return new sc_Char(token.val);
   2508     case 14/*VECTOR_BEGIN*/:
   2509 	return readVector.call(this);
   2510     case 18/*REFERENCE*/:
   2511 	return readReference.call(this, token.val);
   2512     case 19/*STORE*/:
   2513 	return storeRefence.call(this, token.val);
   2514     case 9/*ID*/:
   2515 	return sc_jsstring2symbol(token.val);
   2516     case 0/*EOF*/:
   2517     case 12/*NUMBER*/:
   2518     case 15/*TRUE*/:
   2519     case 16/*FALSE*/:
   2520     case 17/*UNSPECIFIED*/:
   2521 	return token.val;
   2522     default:
   2523 	throw "unexpected token " + token.type + " " + token.val;
   2524     }
   2525 };
   2526 
   2527 /*** META ((export #t)) */
   2528 function sc_read(port) {
   2529     if (port === undefined) // we assume the port hasn't been given.
   2530 	port = SC_DEFAULT_IN; // THREAD: shared var...
   2531     var reader = new sc_Reader(new sc_Tokenizer(port));
   2532     return reader.read();
   2533 }
   2534 /*** META ((export #t)) */
   2535 function sc_readChar(port) {
   2536     if (port === undefined) // we assume the port hasn't been given.
   2537 	port = SC_DEFAULT_IN; // THREAD: shared var...
   2538     var t = port.readChar();
   2539     return t === SC_EOF_OBJECT? t: new sc_Char(t);
   2540 }
   2541 /*** META ((export #t)) */
   2542 function sc_peekChar(port) {
   2543     if (port === undefined) // we assume the port hasn't been given.
   2544 	port = SC_DEFAULT_IN; // THREAD: shared var...
   2545     var t = port.peekChar();
   2546     return t === SC_EOF_OBJECT? t: new sc_Char(t);
   2547 }    
   2548 /*** META ((export #t)
   2549            (type bool))
   2550 */
   2551 function sc_isCharReady(port) {
   2552     if (port === undefined) // we assume the port hasn't been given.
   2553 	port = SC_DEFAULT_IN; // THREAD: shared var...
   2554     return port.isCharReady();
   2555 }
   2556 /*** META ((export #t)
   2557            (peephole (postfix ".close()")))
   2558 */
   2559 function sc_closeInputPort(p) {
   2560     return p.close();
   2561 }
   2562 
   2563 /*** META ((export #t)
   2564            (type bool)
   2565            (peephole (postfix " instanceof sc_InputPort")))
   2566 */
   2567 function sc_isInputPort(o) {
   2568     return (o instanceof sc_InputPort);
   2569 }
   2570 
   2571 /*** META ((export eof-object?)
   2572            (type bool)
   2573            (peephole (postfix " === SC_EOF_OBJECT")))
   2574 */
   2575 function sc_isEOFObject(o) {
   2576     return o === SC_EOF_OBJECT;
   2577 }
   2578 
   2579 /*** META ((export #t)
   2580            (peephole (hole 0 "SC_DEFAULT_IN")))
   2581 */
   2582 function sc_currentInputPort() {
   2583     return SC_DEFAULT_IN;
   2584 }
   2585 
   2586 /* ------------ file operations are not supported -----------*/
   2587 /*** META ((export #t)) */
   2588 function sc_callWithInputFile(s, proc) {
   2589     throw "can't open " + s;
   2590 }
   2591 
   2592 /*** META ((export #t)) */
   2593 function sc_callWithOutputFile(s, proc) {
   2594     throw "can't open " + s;
   2595 }
   2596 
   2597 /*** META ((export #t)) */
   2598 function sc_withInputFromFile(s, thunk) {
   2599     throw "can't open " + s;
   2600 }
   2601 
   2602 /*** META ((export #t)) */
   2603 function sc_withOutputToFile(s, thunk) {
   2604     throw "can't open " + s;
   2605 }
   2606 
   2607 /*** META ((export #t)) */
   2608 function sc_openInputFile(s) {
   2609     throw "can't open " + s;
   2610 }
   2611 
   2612 /*** META ((export #t)) */
   2613 function sc_openOutputFile(s) {
   2614     throw "can't open " + s;
   2615 }
   2616 
   2617 /* ----------------------------------------------------------------------------*/
   2618 /*** META ((export #t)) */
   2619 function sc_basename(p) {
   2620    var i = p.lastIndexOf('/');
   2621 
   2622    if(i >= 0)
   2623       return p.substring(i + 1, p.length);
   2624    else
   2625       return '';
   2626 }
   2627 
   2628 /*** META ((export #t)) */
   2629 function sc_dirname(p) {
   2630    var i = p.lastIndexOf('/');
   2631 
   2632    if(i >= 0)
   2633       return p.substring(0, i);
   2634    else
   2635       return '';
   2636 }
   2637 
   2638 /* ----------------------------------------------------------------------------*/
   2639 
   2640 /*** META ((export #t)) */
   2641 function sc_withInputFromPort(p, thunk) {
   2642     try {
   2643 	var tmp = SC_DEFAULT_IN; // THREAD: shared var.
   2644 	SC_DEFAULT_IN = p;
   2645 	return thunk();
   2646     } finally {
   2647 	SC_DEFAULT_IN = tmp;
   2648     }
   2649 }
   2650 
   2651 /*** META ((export #t)) */
   2652 function sc_withInputFromString(s, thunk) {
   2653     return sc_withInputFromPort(new sc_StringInputPort(sc_string2jsstring(s)), thunk);
   2654 }
   2655 
   2656 /*** META ((export #t)) */
   2657 function sc_withOutputToPort(p, thunk) {
   2658     try {
   2659 	var tmp = SC_DEFAULT_OUT; // THREAD: shared var.
   2660 	SC_DEFAULT_OUT = p;
   2661 	return thunk();
   2662     } finally {
   2663 	SC_DEFAULT_OUT = tmp;
   2664     }
   2665 }
   2666 
   2667 /*** META ((export #t)) */
   2668 function sc_withOutputToString(thunk) {
   2669     var p = new sc_StringOutputPort();
   2670     sc_withOutputToPort(p, thunk);
   2671     return p.close();
   2672 }
   2673 
   2674 /*** META ((export #t)) */
   2675 function sc_withOutputToProcedure(proc, thunk) {
   2676     var t = function(s) { proc(sc_jsstring2string(s)); };
   2677     return sc_withOutputToPort(new sc_GenericOutputPort(t), thunk);
   2678 }
   2679 
   2680 /*** META ((export #t)
   2681            (peephole (hole 0 "new sc_StringOutputPort()")))
   2682 */
   2683 function sc_openOutputString() {
   2684     return new sc_StringOutputPort();
   2685 }
   2686 
   2687 /*** META ((export #t)) */
   2688 function sc_openInputString(str) {
   2689     return new sc_StringInputPort(sc_string2jsstring(str));
   2690 }
   2691 
   2692 /* ----------------------------------------------------------------------------*/
   2693 
   2694 function sc_OutputPort() {
   2695 }
   2696 sc_OutputPort.prototype = new sc_Port();
   2697 sc_OutputPort.prototype.appendJSString = function(obj) {
   2698     /* do nothing */
   2699 }
   2700 sc_OutputPort.prototype.close = function() {
   2701     /* do nothing */
   2702 }
   2703 
   2704 function sc_StringOutputPort() {
   2705     this.res = "";
   2706 }
   2707 sc_StringOutputPort.prototype = new sc_OutputPort();
   2708 sc_StringOutputPort.prototype.appendJSString = function(s) {
   2709     this.res += s;
   2710 }
   2711 sc_StringOutputPort.prototype.close = function() {
   2712     return sc_jsstring2string(this.res);
   2713 }
   2714 
   2715 /*** META ((export #t)) */
   2716 function sc_getOutputString(sp) {
   2717     return sc_jsstring2string(sp.res);
   2718 }
   2719     
   2720 
   2721 function sc_ErrorOutputPort() {
   2722 }
   2723 sc_ErrorOutputPort.prototype = new sc_OutputPort();
   2724 sc_ErrorOutputPort.prototype.appendJSString = function(s) {
   2725     throw "don't write on ErrorPort!";
   2726 }
   2727 sc_ErrorOutputPort.prototype.close = function() {
   2728     /* do nothing */
   2729 }
   2730 
   2731 function sc_GenericOutputPort(appendJSString, close) {
   2732     this.appendJSString = appendJSString;
   2733     if (close)
   2734 	this.close = close;
   2735 }
   2736 sc_GenericOutputPort.prototype = new sc_OutputPort();
   2737 
   2738 /*** META ((export #t)
   2739            (type bool)
   2740            (peephole (postfix " instanceof sc_OutputPort")))
   2741 */
   2742 function sc_isOutputPort(o) {
   2743     return (o instanceof sc_OutputPort);
   2744 }
   2745 
   2746 /*** META ((export #t)
   2747            (peephole (postfix ".close()")))
   2748 */
   2749 function sc_closeOutputPort(p) {
   2750     return p.close();
   2751 }
   2752 
   2753 /* ------------------ write ---------------------------------------------------*/
   2754 
   2755 /*** META ((export #t)) */
   2756 function sc_write(o, p) {
   2757     if (p === undefined) // we assume not given
   2758 	p = SC_DEFAULT_OUT;
   2759     p.appendJSString(sc_toWriteString(o));
   2760 }
   2761 
   2762 function sc_toWriteString(o) {
   2763     if (o === null)
   2764 	return "()";
   2765     else if (o === true)
   2766 	return "#t";
   2767     else if (o === false)
   2768 	return "#f";
   2769     else if (o === undefined)
   2770 	return "#unspecified";
   2771     else if (typeof o === 'function')
   2772 	return "#<procedure " + sc_hash(o) + ">";
   2773     else if (o.sc_toWriteString)
   2774 	return o.sc_toWriteString();
   2775     else
   2776 	return o.toString();
   2777 }
   2778 
   2779 function sc_escapeWriteString(s) {
   2780     var res = "";
   2781     var j = 0;
   2782     for (i = 0; i < s.length; i++) {
   2783 	switch (s.charAt(i)) {
   2784 	case "\0": res += s.substring(j, i) + "\\0"; j = i + 1; break;
   2785 	case "\b": res += s.substring(j, i) + "\\b"; j = i + 1; break;
   2786 	case "\f": res += s.substring(j, i) + "\\f"; j = i + 1; break;
   2787 	case "\n": res += s.substring(j, i) + "\\n"; j = i + 1; break;
   2788 	case "\r": res += s.substring(j, i) + "\\r"; j = i + 1; break;
   2789 	case "\t": res += s.substring(j, i) + "\\t"; j = i + 1; break;
   2790 	case "\v": res += s.substring(j, i) + "\\v"; j = i + 1; break;
   2791 	case '"': res += s.substring(j, i) + '\\"'; j = i + 1; break;
   2792 	case "\\": res += s.substring(j, i) + "\\\\"; j = i + 1; break;
   2793 	default:
   2794 	    var c = s.charAt(i);
   2795 	    if ("\a" !== "a" && c == "\a") {
   2796 		res += s.substring(j, i) + "\\a"; j = i + 1; continue;
   2797 	    }
   2798 	    if ("\v" !== "v" && c == "\v") {
   2799 		res += s.substring(j, i) + "\\v"; j = i + 1; continue;
   2800 	    }
   2801 	    //if (s.charAt(i) < ' ' || s.charCodeAt(i) > 127) {
   2802 	    // CARE: Manuel is this OK with HOP?
   2803 	    if (s.charAt(i) < ' ') {
   2804 		/* non printable character and special chars */
   2805 		res += s.substring(j, i) + "\\x" + s.charCodeAt(i).toString(16);
   2806 		j = i + 1;
   2807 	    }
   2808 	    // else just let i increase...
   2809 	}
   2810     }
   2811     res += s.substring(j, i);
   2812     return res;
   2813 }
   2814 
   2815 /* ------------------ display ---------------------------------------------------*/
   2816 
   2817 /*** META ((export #t)) */
   2818 function sc_display(o, p) {
   2819     if (p === undefined) // we assume not given
   2820 	p = SC_DEFAULT_OUT;
   2821     p.appendJSString(sc_toDisplayString(o));
   2822 }
   2823 
   2824 function sc_toDisplayString(o) {
   2825     if (o === null)
   2826 	return "()";
   2827     else if (o === true)
   2828 	return "#t";
   2829     else if (o === false)
   2830 	return "#f";
   2831     else if (o === undefined)
   2832 	return "#unspecified";
   2833     else if (typeof o === 'function')
   2834 	return "#<procedure " + sc_hash(o) + ">";
   2835     else if (o.sc_toDisplayString)
   2836 	return o.sc_toDisplayString();
   2837     else
   2838 	return o.toString();
   2839 }
   2840 
   2841 /* ------------------ newline ---------------------------------------------------*/
   2842 
   2843 /*** META ((export #t)) */
   2844 function sc_newline(p) {
   2845     if (p === undefined) // we assume not given
   2846 	p = SC_DEFAULT_OUT;
   2847     p.appendJSString("\n");
   2848 }
   2849     
   2850 /* ------------------ write-char ---------------------------------------------------*/
   2851 
   2852 /*** META ((export #t)) */
   2853 function sc_writeChar(c, p) {
   2854     if (p === undefined) // we assume not given
   2855 	p = SC_DEFAULT_OUT;
   2856     p.appendJSString(c.val);
   2857 }
   2858 
   2859 /* ------------------ write-circle ---------------------------------------------------*/
   2860 
   2861 /*** META ((export #t)) */
   2862 function sc_writeCircle(o, p) {
   2863     if (p === undefined) // we assume not given
   2864 	p = SC_DEFAULT_OUT;
   2865     p.appendJSString(sc_toWriteCircleString(o));
   2866 }
   2867 
   2868 function sc_toWriteCircleString(o) {
   2869     var symb = sc_gensym("writeCircle");
   2870     var nbPointer = new Object();
   2871     nbPointer.nb = 0;
   2872     sc_prepWriteCircle(o, symb, nbPointer);
   2873     return sc_genToWriteCircleString(o, symb);
   2874 }
   2875 
   2876 function sc_prepWriteCircle(o, symb, nbPointer) {
   2877     // TODO sc_Struct
   2878     if (o instanceof sc_Pair ||
   2879 	o instanceof sc_Vector) {
   2880 	if (o[symb] !== undefined) {
   2881 	    // not the first visit.
   2882 	    o[symb]++;
   2883 	    // unless there is already a number, assign one.
   2884 	    if (!o[symb + "nb"]) o[symb + "nb"] = nbPointer.nb++;
   2885 	    return;
   2886 	}
   2887 	o[symb] = 0;
   2888 	if (o instanceof sc_Pair) {
   2889 	    sc_prepWriteCircle(o.car, symb, nbPointer);
   2890 	    sc_prepWriteCircle(o.cdr, symb, nbPointer);
   2891 	} else {
   2892 	    for (var i = 0; i < o.length; i++)
   2893 		sc_prepWriteCircle(o[i], symb, nbPointer);
   2894 	}
   2895     }
   2896 }
   2897 
   2898 function sc_genToWriteCircleString(o, symb) {
   2899     if (!(o instanceof sc_Pair ||
   2900 	  o instanceof sc_Vector))
   2901 	return sc_toWriteString(o);
   2902     return o.sc_toWriteCircleString(symb);
   2903 }
   2904 sc_Pair.prototype.sc_toWriteCircleString = function(symb, inList) {
   2905     if (this[symb + "use"]) { // use-flag is set. Just use it.
   2906 	var nb = this[symb + "nb"];
   2907 	if (this[symb]-- === 0) { // if we are the last use. remove all fields.
   2908 	    delete this[symb];
   2909 	    delete this[symb + "nb"];
   2910 	    delete this[symb + "use"];
   2911 	}
   2912 	if (inList)
   2913 	    return '. #' + nb + '#';
   2914 	else
   2915 	    return '#' + nb + '#';
   2916     }
   2917     if (this[symb]-- === 0) { // if we are the last use. remove all fields.
   2918 	delete this[symb];
   2919 	delete this[symb + "nb"];
   2920 	delete this[symb + "use"];
   2921     }
   2922 
   2923     var res = "";
   2924     
   2925     if (this[symb] !== undefined) { // implies > 0
   2926 	this[symb + "use"] = true;
   2927 	if (inList)
   2928 	    res += '. #' + this[symb + "nb"] + '=';
   2929 	else
   2930 	    res += '#' + this[symb + "nb"] + '=';
   2931 	inList = false;
   2932     }
   2933 
   2934     if (!inList)
   2935 	res += "(";
   2936     
   2937     // print car
   2938     res += sc_genToWriteCircleString(this.car, symb);
   2939     
   2940     if (sc_isPair(this.cdr)) {
   2941 	res += " " + this.cdr.sc_toWriteCircleString(symb, true);
   2942     } else if (this.cdr !== null) {
   2943 	res += " . " + sc_genToWriteCircleString(this.cdr, symb);
   2944     }
   2945     if (!inList)
   2946 	res += ")";
   2947     return res;
   2948 };
   2949 sc_Vector.prototype.sc_toWriteCircleString = function(symb) {
   2950     if (this[symb + "use"]) { // use-flag is set. Just use it.
   2951 	var nb = this[symb + "nb"];
   2952 	if (this[symb]-- === 0) { // if we are the last use. remove all fields.
   2953 	    delete this[symb];
   2954 	    delete this[symb + "nb"];
   2955 	    delete this[symb + "use"];
   2956 	}
   2957 	return '#' + nb + '#';
   2958     }
   2959     if (this[symb]-- === 0) { // if we are the last use. remove all fields.
   2960 	delete this[symb];
   2961 	delete this[symb + "nb"];
   2962 	delete this[symb + "use"];
   2963     }
   2964 
   2965     var res = "";
   2966     if (this[symb] !== undefined) { // implies > 0
   2967 	this[symb + "use"] = true;
   2968 	res += '#' + this[symb + "nb"] + '=';
   2969     }
   2970     res += "#(";
   2971     for (var i = 0; i < this.length; i++) {
   2972 	res += sc_genToWriteCircleString(this[i], symb);
   2973 	if (i < this.length - 1) res += " ";
   2974     }
   2975     res += ")";
   2976     return res;
   2977 };
   2978 
   2979 
   2980 /* ------------------ print ---------------------------------------------------*/
   2981 
   2982 /*** META ((export #t)) */
   2983 function sc_print(s) {
   2984     if (arguments.length === 1) {
   2985 	sc_display(s);
   2986 	sc_newline();
   2987     }
   2988     else {
   2989 	for (var i = 0; i < arguments.length; i++)
   2990 	    sc_display(arguments[i]);
   2991 	sc_newline();
   2992     }
   2993 }
   2994 
   2995 /* ------------------ format ---------------------------------------------------*/
   2996 /*** META ((export #t)) */
   2997 function sc_format(s, args) {
   2998    var len = s.length;
   2999    var p = new sc_StringOutputPort();
   3000    var i = 0, j = 1;
   3001 
   3002    while( i < len ) {
   3003       var i2 = s.indexOf("~", i);
   3004 
   3005       if (i2 == -1) {
   3006 	  p.appendJSString( s.substring( i, len ) );
   3007 	  return p.close();
   3008       } else {
   3009 	 if (i2 > i) {
   3010 	    if (i2 == (len - 1)) {
   3011 		p.appendJSString(s.substring(i, len));
   3012 		return p.close();
   3013 	    } else {
   3014 	       p.appendJSString(s.substring(i, i2));
   3015 	       i = i2;
   3016 	    }
   3017 	 }
   3018 
   3019 	 switch(s.charCodeAt(i2 + 1)) {
   3020 	    case 65:
   3021 	    case 97:
   3022 	       // a
   3023 	       sc_display(arguments[j], p);
   3024 	       i += 2; j++;
   3025 	       break;
   3026 
   3027 	    case 83:
   3028 	    case 115:
   3029 	       // s
   3030 	       sc_write(arguments[j], p);
   3031 	       i += 2; j++;
   3032 	       break;
   3033 
   3034 	    case 86:
   3035 	    case 118:
   3036 	       // v
   3037 	       sc_display(arguments[j], p);
   3038 	       p.appendJSString("\n");
   3039 	       i += 2; j++;
   3040 	       break;
   3041 
   3042 	    case 67:
   3043 	    case 99:
   3044 	       // c
   3045 	       p.appendJSString(String.fromCharCode(arguments[j]));
   3046 	       i += 2; j++;
   3047 	       break;
   3048 
   3049 	    case 88:
   3050 	    case 120:
   3051 	       // x
   3052 	       p.appendJSString(arguments[j].toString(6));
   3053 	       i += 2; j++;
   3054 	       break;
   3055 
   3056 	    case 79:
   3057 	    case 111:
   3058 	       // o
   3059 	       p.appendJSString(arguments[j].toString(8));
   3060 	       i += 2; j++;
   3061 	       break;
   3062 
   3063 	    case 66:
   3064 	    case 98:
   3065 	       // b
   3066 	       p.appendJSString(arguments[j].toString(2));
   3067 	       i += 2; j++;
   3068 	       break;
   3069 	       
   3070 	    case 37:
   3071 	    case 110:
   3072 	       // %, n
   3073 	       p.appendJSString("\n");
   3074 	       i += 2; break;
   3075 
   3076 	    case 114:
   3077 	       // r
   3078 	       p.appendJSString("\r");
   3079 	       i += 2; break;
   3080 
   3081 	    case 126:
   3082 	       // ~
   3083 	       p.appendJSString("~");
   3084 	       i += 2; break;
   3085 
   3086 	    default:
   3087 	       sc_error( "format: illegal ~"
   3088 			 + String.fromCharCode(s.charCodeAt(i2 + 1))
   3089 			 + " sequence" );
   3090 	       return "";
   3091 	 }
   3092       }
   3093    }
   3094 
   3095    return p.close();
   3096 }
   3097 
   3098 /* ------------------ global ports ---------------------------------------------------*/
   3099 
   3100 var SC_DEFAULT_IN = new sc_ErrorInputPort();
   3101 var SC_DEFAULT_OUT = new sc_ErrorOutputPort();
   3102 var SC_ERROR_OUT = new sc_ErrorOutputPort();
   3103 
   3104 var sc_SYMBOL_PREFIX = "\u1E9C";
   3105 var sc_KEYWORD_PREFIX = "\u1E9D";
   3106 
   3107 /*** META ((export #t)
   3108            (peephole (id))) */
   3109 function sc_jsstring2string(s) {
   3110     return s;
   3111 }
   3112 
   3113 /*** META ((export #t)
   3114            (peephole (prefix "'\\u1E9C' +")))
   3115 */
   3116 function sc_jsstring2symbol(s) {
   3117     return sc_SYMBOL_PREFIX + s;
   3118 }
   3119 
   3120 /*** META ((export #t)
   3121            (peephole (id)))
   3122 */
   3123 function sc_string2jsstring(s) {
   3124     return s;
   3125 }
   3126 
   3127 /*** META ((export #t)
   3128            (peephole (symbol2jsstring_immutable)))
   3129 */
   3130 function sc_symbol2jsstring(s) {
   3131     return s.slice(1);
   3132 }
   3133 
   3134 /*** META ((export #t)
   3135            (peephole (postfix ".slice(1)")))
   3136 */
   3137 function sc_keyword2jsstring(k) {
   3138     return k.slice(1);
   3139 }
   3140 
   3141 /*** META ((export #t)
   3142            (peephole (prefix "'\\u1E9D' +")))
   3143 */
   3144 function sc_jsstring2keyword(s) {
   3145     return sc_KEYWORD_PREFIX + s;
   3146 }
   3147 
   3148 /*** META ((export #t)
   3149            (type bool))
   3150 */
   3151 function sc_isKeyword(s) {
   3152     return (typeof s === "string") &&
   3153 	(s.charAt(0) === sc_KEYWORD_PREFIX);
   3154 }
   3155 
   3156 
   3157 /*** META ((export #t)) */
   3158 var sc_gensym = function() {
   3159     var counter = 1000;
   3160     return function(sym) {
   3161 	counter++;
   3162 	if (!sym) sym = sc_SYMBOL_PREFIX;
   3163 	return sym + "s" + counter + "~" + "^sC-GeNsYm ";
   3164     };
   3165 }();
   3166 
   3167 
   3168 /*** META ((export #t)
   3169            (type bool))
   3170 */
   3171 function sc_isEqual(o1, o2) {
   3172     return ((o1 === o2) ||
   3173 	    (sc_isPair(o1) && sc_isPair(o2)
   3174 	     && sc_isPairEqual(o1, o2, sc_isEqual)) ||
   3175 	    (sc_isVector(o1) && sc_isVector(o2)
   3176 	     && sc_isVectorEqual(o1, o2, sc_isEqual)));
   3177 }
   3178 
   3179 /*** META ((export number->symbol integer->symbol)) */
   3180 function sc_number2symbol(x, radix) {
   3181     return sc_SYMBOL_PREFIX + sc_number2jsstring(x, radix);
   3182 }
   3183     
   3184 /*** META ((export number->string integer->string)) */
   3185 var sc_number2string = sc_number2jsstring;
   3186 
   3187 /*** META ((export #t)) */
   3188 function sc_symbol2number(s, radix) {
   3189     return sc_jsstring2number(s.slice(1), radix);
   3190 }
   3191 
   3192 /*** META ((export #t)) */
   3193 var sc_string2number = sc_jsstring2number;
   3194 
   3195 /*** META ((export #t)
   3196            (peephole (prefix "+" s)))
   3197            ;; peephole will only apply if no radix is given.
   3198 */
   3199 function sc_string2integer(s, radix) {
   3200     if (!radix) return +s;
   3201     return parseInt(s, radix);
   3202 }
   3203 
   3204 /*** META ((export #t)
   3205            (peephole (prefix "+")))
   3206 */
   3207 function sc_string2real(s) {
   3208     return +s;
   3209 }
   3210 
   3211 
   3212 /*** META ((export #t)
   3213            (type bool))
   3214 */
   3215 function sc_isSymbol(s) {
   3216     return (typeof s === "string") &&
   3217 	(s.charAt(0) === sc_SYMBOL_PREFIX);
   3218 }
   3219 
   3220 /*** META ((export #t)
   3221            (peephole (symbol2string_immutable)))
   3222 */
   3223 function sc_symbol2string(s) {
   3224     return s.slice(1);
   3225 }
   3226 
   3227 /*** META ((export #t)
   3228            (peephole (prefix "'\\u1E9C' +")))
   3229 */
   3230 function sc_string2symbol(s) {
   3231     return sc_SYMBOL_PREFIX + s;
   3232 }
   3233 
   3234 /*** META ((export symbol-append)
   3235            (peephole (symbolAppend_immutable)))
   3236 */
   3237 function sc_symbolAppend() {
   3238     var res = sc_SYMBOL_PREFIX;
   3239     for (var i = 0; i < arguments.length; i++)
   3240 	res += arguments[i].slice(1);
   3241     return res;
   3242 }
   3243 
   3244 /*** META ((export #t)
   3245            (peephole (postfix ".val")))
   3246 */
   3247 function sc_char2string(c) { return c.val; }
   3248 
   3249 /*** META ((export #t)
   3250            (peephole (hole 1 "'\\u1E9C' + " c ".val")))
   3251 */
   3252 function sc_char2symbol(c) { return sc_SYMBOL_PREFIX + c.val; }
   3253 
   3254 /*** META ((export #t)
   3255            (type bool))
   3256 */
   3257 function sc_isString(s) {
   3258     return (typeof s === "string") &&
   3259 	(s.charAt(0) !== sc_SYMBOL_PREFIX);
   3260 }
   3261 
   3262 /*** META ((export #t)) */
   3263 var sc_makeString = sc_makejsString;
   3264 
   3265 
   3266 /*** META ((export #t)) */
   3267 function sc_string() {
   3268     for (var i = 0; i < arguments.length; i++)
   3269 	arguments[i] = arguments[i].val;
   3270     return "".concat.apply("", arguments);
   3271 }
   3272 
   3273 /*** META ((export #t)
   3274            (peephole (postfix ".length")))
   3275 */
   3276 function sc_stringLength(s) { return s.length; }
   3277 
   3278 /*** META ((export #t)) */
   3279 function sc_stringRef(s, k) {
   3280     return new sc_Char(s.charAt(k));
   3281 }
   3282 
   3283 /* there's no stringSet in the immutable version
   3284 function sc_stringSet(s, k, c)
   3285 */
   3286 
   3287 
   3288 /*** META ((export string=?)
   3289 	   (type bool)
   3290            (peephole (hole 2 str1 " === " str2)))
   3291 */
   3292 function sc_isStringEqual(s1, s2) {
   3293     return s1 === s2;
   3294 }
   3295 /*** META ((export string<?)
   3296 	   (type bool)
   3297            (peephole (hole 2 str1 " < " str2)))
   3298 */
   3299 function sc_isStringLess(s1, s2) {
   3300     return s1 < s2;
   3301 }
   3302 /*** META ((export string>?)
   3303 	   (type bool)
   3304            (peephole (hole 2 str1 " > " str2)))
   3305 */
   3306 function sc_isStringGreater(s1, s2) {
   3307     return s1 > s2;
   3308 }
   3309 /*** META ((export string<=?)
   3310 	   (type bool)
   3311            (peephole (hole 2 str1 " <= " str2)))
   3312 */
   3313 function sc_isStringLessEqual(s1, s2) {
   3314     return s1 <= s2;
   3315 }
   3316 /*** META ((export string>=?)
   3317 	   (type bool)
   3318            (peephole (hole 2 str1 " >= " str2)))
   3319 */
   3320 function sc_isStringGreaterEqual(s1, s2) {
   3321     return s1 >= s2;
   3322 }
   3323 /*** META ((export string-ci=?)
   3324 	   (type bool)
   3325            (peephole (hole 2 str1 ".toLowerCase() === " str2 ".toLowerCase()")))
   3326 */
   3327 function sc_isStringCIEqual(s1, s2) {
   3328     return s1.toLowerCase() === s2.toLowerCase();
   3329 }
   3330 /*** META ((export string-ci<?)
   3331 	   (type bool)
   3332            (peephole (hole 2 str1 ".toLowerCase() < " str2 ".toLowerCase()")))
   3333 */
   3334 function sc_isStringCILess(s1, s2) {
   3335     return s1.toLowerCase() < s2.toLowerCase();
   3336 }
   3337 /*** META ((export string-ci>?)
   3338 	   (type bool)
   3339            (peephole (hole 2 str1 ".toLowerCase() > " str2 ".toLowerCase()")))
   3340 */
   3341 function sc_isStringCIGreater(s1, s2) {
   3342     return s1.toLowerCase() > s2.toLowerCase();
   3343 }
   3344 /*** META ((export string-ci<=?)
   3345 	   (type bool)
   3346            (peephole (hole 2 str1 ".toLowerCase() <= " str2 ".toLowerCase()")))
   3347 */
   3348 function sc_isStringCILessEqual(s1, s2) {
   3349     return s1.toLowerCase() <= s2.toLowerCase();
   3350 }
   3351 /*** META ((export string-ci>=?)
   3352 	   (type bool)
   3353            (peephole (hole 2 str1 ".toLowerCase() >= " str2 ".toLowerCase()")))
   3354 */
   3355 function sc_isStringCIGreaterEqual(s1, s2) {
   3356     return s1.toLowerCase() >= s2.toLowerCase();
   3357 }
   3358 
   3359 /*** META ((export #t)
   3360            (peephole (hole 3 s ".substring(" start ", " end ")")))
   3361 */
   3362 function sc_substring(s, start, end) {
   3363     return s.substring(start, end);
   3364 }
   3365 
   3366 /*** META ((export #t))
   3367 */
   3368 function sc_isSubstring_at(s1, s2, i) {
   3369     return s2 == s1.substring(i, i+ s2.length);
   3370 }
   3371 
   3372 /*** META ((export #t)
   3373            (peephole (infix 0 #f "+" "''")))
   3374 */
   3375 function sc_stringAppend() {
   3376     return "".concat.apply("", arguments);
   3377 }
   3378 
   3379 /*** META ((export #t)) */
   3380 var sc_string2list = sc_jsstring2list;
   3381 
   3382 /*** META ((export #t)) */
   3383 var sc_list2string = sc_list2jsstring;
   3384 
   3385 /*** META ((export #t)
   3386            (peephole (id)))
   3387 */
   3388 function sc_stringCopy(s) {
   3389     return s;
   3390 }
   3391 
   3392 /* there's no string-fill in the immutable version
   3393 function sc_stringFill(s, c)
   3394 */
   3395 
   3396 /*** META ((export #t)
   3397            (peephole (postfix ".slice(1)")))
   3398 */
   3399 function sc_keyword2string(o) {
   3400     return o.slice(1);
   3401 }
   3402 
   3403 /*** META ((export #t)
   3404            (peephole (prefix "'\\u1E9D' +")))
   3405 */
   3406 function sc_string2keyword(o) {
   3407     return sc_KEYWORD_PREFIX + o;
   3408 }
   3409 
   3410 String.prototype.sc_toDisplayString = function() {
   3411     if (this.charAt(0) === sc_SYMBOL_PREFIX)
   3412 	// TODO: care for symbols with spaces (escape-chars symbols).
   3413 	return this.slice(1);
   3414     else if (this.charAt(0) === sc_KEYWORD_PREFIX)
   3415 	return ":" + this.slice(1);
   3416     else
   3417 	return this.toString();
   3418 };
   3419 
   3420 String.prototype.sc_toWriteString = function() {
   3421     if (this.charAt(0) === sc_SYMBOL_PREFIX)
   3422 	// TODO: care for symbols with spaces (escape-chars symbols).
   3423 	return this.slice(1);
   3424     else if (this.charAt(0) === sc_KEYWORD_PREFIX)
   3425 	return ":" + this.slice(1);
   3426     else
   3427 	return '"' + sc_escapeWriteString(this) + '"';
   3428 };
   3429 /* Exported Variables */
   3430 var BgL_testzd2boyerzd2;
   3431 var BgL_nboyerzd2benchmarkzd2;
   3432 var BgL_setupzd2boyerzd2;
   3433 /* End Exports */
   3434 
   3435 var translate_term_nboyer;
   3436 var translate_args_nboyer;
   3437 var untranslate_term_nboyer;
   3438 var BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer;
   3439 var BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer;
   3440 var translate_alist_nboyer;
   3441 var apply_subst_nboyer;
   3442 var apply_subst_lst_nboyer;
   3443 var tautologyp_nboyer;
   3444 var if_constructor_nboyer;
   3445 var rewrite_count_nboyer;
   3446 var rewrite_nboyer;
   3447 var rewrite_args_nboyer;
   3448 var unify_subst_nboyer;
   3449 var one_way_unify1_nboyer;
   3450 var false_term_nboyer;
   3451 var true_term_nboyer;
   3452 var trans_of_implies1_nboyer;
   3453 var is_term_equal_nboyer;
   3454 var is_term_member_nboyer;
   3455 var const_nboyer;
   3456 var sc_const_3_nboyer;
   3457 var sc_const_4_nboyer;
   3458 {
   3459     (sc_const_4_nboyer = (new sc_Pair("\u1E9Cimplies",(new sc_Pair((new sc_Pair("\u1E9Cand",(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cand",(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cz",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cand",(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cz",(new sc_Pair("\u1E9Cu",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cu",(new sc_Pair("\u1E9Cw",null)))))),null)))))),null)))))),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cw",null)))))),null)))))));
   3460     (sc_const_3_nboyer = sc_list((new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ccompile",(new sc_Pair("\u1E9Cform",null)))),(new sc_Pair((new sc_Pair("\u1E9Creverse",(new sc_Pair((new sc_Pair("\u1E9Ccodegen",(new sc_Pair((new sc_Pair("\u1E9Coptimize",(new sc_Pair("\u1E9Cform",null)))),(new sc_Pair((new sc_Pair("\u1E9Cnil",null)),null)))))),null)))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ceqp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cfix",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cfix",(new sc_Pair("\u1E9Cy",null)))),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cgreaterp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Clessp",(new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cx",null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Clesseqp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cnot",(new sc_Pair((new sc_Pair("\u1E9Clessp",(new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cx",null)))))),null)))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cgreatereqp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cnot",(new sc_Pair((new sc_Pair("\u1E9Clessp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),null)))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cboolean",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cor",(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair("\u1E9Cx",(new sc_Pair((new sc_Pair("\u1E9Ct",null)),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair("\u1E9Cx",(new sc_Pair((new sc_Pair("\u1E9Cf",null)),null)))))),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ciff",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cand",(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cx",null)))))),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ceven1",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Czerop",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Ct",null)),(new sc_Pair((new sc_Pair("\u1E9Codd",(new sc_Pair((new sc_Pair("\u1E9Csub1",(new sc_Pair("\u1E9Cx",null)))),null)))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ccountps-",(new sc_Pair("\u1E9Cl",(new sc_Pair("\u1E9Cpred",null)))))),(new sc_Pair((new sc_Pair("\u1E9Ccountps-loop",(new sc_Pair("\u1E9Cl",(new sc_Pair("\u1E9Cpred",(new sc_Pair((new sc_Pair("\u1E9Czero",null)),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cfact-",(new sc_Pair("\u1E9Ci",null)))),(new sc_Pair((new sc_Pair("\u1E9Cfact-loop",(new sc_Pair("\u1E9Ci",(new sc_Pair((1),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Creverse-",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Creverse-loop",(new sc_Pair("\u1E9Cx",(new sc_Pair((new sc_Pair("\u1E9Cnil",null)),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cdivides",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Czerop",(new sc_Pair((new sc_Pair("\u1E9Cremainder",(new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cx",null)))))),null)))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cassume-true",(new sc_Pair("\u1E9Cvar",(new sc_Pair("\u1E9Calist",null)))))),(new sc_Pair((new sc_Pair("\u1E9Ccons",(new sc_Pair((new sc_Pair("\u1E9Ccons",(new sc_Pair("\u1E9Cvar",(new sc_Pair((new sc_Pair("\u1E9Ct",null)),null)))))),(new sc_Pair("\u1E9Calist",null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cassume-false",(new sc_Pair("\u1E9Cvar",(new sc_Pair("\u1E9Calist",null)))))),(new sc_Pair((new sc_Pair("\u1E9Ccons",(new sc_Pair((new sc_Pair("\u1E9Ccons",(new sc_Pair("\u1E9Cvar",(new sc_Pair((new sc_Pair("\u1E9Cf",null)),null)))))),(new sc_Pair("\u1E9Calist",null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ctautology-checker",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Ctautologyp",(new sc_Pair((new sc_Pair("\u1E9Cnormalize",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cnil",null)),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cfalsify",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cfalsify1",(new sc_Pair((new sc_Pair("\u1E9Cnormalize",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cnil",null)),null)))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cprime",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Cand",(new sc_Pair((new sc_Pair("\u1E9Cnot",(new sc_Pair((new sc_Pair("\u1E9Czerop",(new sc_Pair("\u1E9Cx",null)))),null)))),(new sc_Pair((new sc_Pair("\u1E9Cnot",(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair("\u1E9Cx",(new sc_Pair((new sc_Pair("\u1E9Cadd1",(new sc_Pair((new sc_Pair("\u1E9Czero",null)),null)))),null)))))),null)))),(new sc_Pair((new sc_Pair("\u1E9Cprime1",(new sc_Pair("\u1E9Cx",(new sc_Pair((new sc_Pair("\u1E9Csub1",(new sc_Pair("\u1E9Cx",null)))),null)))))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cand",(new sc_Pair("\u1E9Cp",(new sc_Pair("\u1E9Cq",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair("\u1E9Cp",(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair("\u1E9Cq",(new sc_Pair((new sc_Pair("\u1E9Ct",null)),(new sc_Pair((new sc_Pair("\u1E9Cf",null)),null)))))))),(new sc_Pair((new sc_Pair("\u1E9Cf",null)),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cor",(new sc_Pair("\u1E9Cp",(new sc_Pair("\u1E9Cq",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair("\u1E9Cp",(new sc_Pair((new sc_Pair("\u1E9Ct",null)),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair("\u1E9Cq",(new sc_Pair((new sc_Pair("\u1E9Ct",null)),(new sc_Pair((new sc_Pair("\u1E9Cf",null)),null)))))))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cnot",(new sc_Pair("\u1E9Cp",null)))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair("\u1E9Cp",(new sc_Pair((new sc_Pair("\u1E9Cf",null)),(new sc_Pair((new sc_Pair("\u1E9Ct",null)),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cimplies",(new sc_Pair("\u1E9Cp",(new sc_Pair("\u1E9Cq",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new 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sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Clistp",(new sc_Pair("\u1E9Cb",null)))),(new sc_Pair((new sc_Pair("\u1E9Clast",(new sc_Pair("\u1E9Cb",null)))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Clistp",(new sc_Pair("\u1E9Ca",null)))),(new sc_Pair((new sc_Pair("\u1E9Ccons",(new sc_Pair((new sc_Pair("\u1E9Ccar",(new sc_Pair((new sc_Pair("\u1E9Clast",(new sc_Pair("\u1E9Ca",null)))),null)))),(new sc_Pair("\u1E9Cb",null)))))),(new sc_Pair("\u1E9Cb",null)))))))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Clessp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair("\u1E9Cz",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Clessp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ct",null)),(new sc_Pair("\u1E9Cz",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cf",null)),(new sc_Pair("\u1E9Cz",null)))))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cassignment",(new sc_Pair("\u1E9Cx",(new sc_Pair((new sc_Pair("\u1E9Cappend",(new sc_Pair("\u1E9Ca",(new sc_Pair("\u1E9Cb",null)))))),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Cassignedp",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Ca",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cassignment",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Ca",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cassignment",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cb",null)))))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Ccar",(new sc_Pair((new sc_Pair("\u1E9Cgopher",(new sc_Pair("\u1E9Cx",null)))),null)))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Clistp",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Ccar",(new sc_Pair((new sc_Pair("\u1E9Cflatten",(new sc_Pair("\u1E9Cx",null)))),null)))),(new sc_Pair((new sc_Pair("\u1E9Czero",null)),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cflatten",(new sc_Pair((new sc_Pair("\u1E9Ccdr",(new sc_Pair((new sc_Pair("\u1E9Cgopher",(new sc_Pair("\u1E9Cx",null)))),null)))),null)))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Clistp",(new sc_Pair("\u1E9Cx",null)))),(new sc_Pair((new sc_Pair("\u1E9Ccdr",(new sc_Pair((new sc_Pair("\u1E9Cflatten",(new sc_Pair("\u1E9Cx",null)))),null)))),(new sc_Pair((new sc_Pair("\u1E9Ccons",(new sc_Pair((new sc_Pair("\u1E9Czero",null)),(new sc_Pair((new sc_Pair("\u1E9Cnil",null)),null)))))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cquotient",(new sc_Pair((new sc_Pair("\u1E9Ctimes",(new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cx",null)))))),(new sc_Pair("\u1E9Cy",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Czerop",(new sc_Pair("\u1E9Cy",null)))),(new sc_Pair((new sc_Pair("\u1E9Czero",null)),(new sc_Pair((new sc_Pair("\u1E9Cfix",(new sc_Pair("\u1E9Cx",null)))),null)))))))),null)))))), (new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cget",(new sc_Pair("\u1E9Cj",(new sc_Pair((new sc_Pair("\u1E9Cset",(new sc_Pair("\u1E9Ci",(new sc_Pair("\u1E9Cval",(new sc_Pair("\u1E9Cmem",null)))))))),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cif",(new sc_Pair((new sc_Pair("\u1E9Ceqp",(new sc_Pair("\u1E9Cj",(new sc_Pair("\u1E9Ci",null)))))),(new sc_Pair("\u1E9Cval",(new sc_Pair((new sc_Pair("\u1E9Cget",(new sc_Pair("\u1E9Cj",(new sc_Pair("\u1E9Cmem",null)))))),null)))))))),null))))))));
   3461     (const_nboyer = (new sc_Pair((new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cf",(new sc_Pair((new sc_Pair("\u1E9Cplus",(new sc_Pair((new sc_Pair("\u1E9Cplus",(new sc_Pair("\u1E9Ca",(new sc_Pair("\u1E9Cb",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cplus",(new sc_Pair("\u1E9Cc",(new sc_Pair((new sc_Pair("\u1E9Czero",null)),null)))))),null)))))),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cy",(new sc_Pair("\u1E9Cf",(new sc_Pair((new sc_Pair("\u1E9Ctimes",(new sc_Pair((new sc_Pair("\u1E9Ctimes",(new sc_Pair("\u1E9Ca",(new sc_Pair("\u1E9Cb",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cplus",(new sc_Pair("\u1E9Cc",(new sc_Pair("\u1E9Cd",null)))))),null)))))),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cz",(new sc_Pair("\u1E9Cf",(new sc_Pair((new sc_Pair("\u1E9Creverse",(new sc_Pair((new sc_Pair("\u1E9Cappend",(new sc_Pair((new sc_Pair("\u1E9Cappend",(new sc_Pair("\u1E9Ca",(new sc_Pair("\u1E9Cb",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cnil",null)),null)))))),null)))),null)))))),(new sc_Pair((new sc_Pair("\u1E9Cu",(new sc_Pair("\u1E9Cequal",(new sc_Pair((new sc_Pair("\u1E9Cplus",(new sc_Pair("\u1E9Ca",(new sc_Pair("\u1E9Cb",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cdifference",(new sc_Pair("\u1E9Cx",(new sc_Pair("\u1E9Cy",null)))))),null)))))))),(new sc_Pair((new sc_Pair("\u1E9Cw",(new sc_Pair("\u1E9Clessp",(new sc_Pair((new sc_Pair("\u1E9Cremainder",(new sc_Pair("\u1E9Ca",(new sc_Pair("\u1E9Cb",null)))))),(new sc_Pair((new sc_Pair("\u1E9Cmember",(new sc_Pair("\u1E9Ca",(new sc_Pair((new sc_Pair("\u1E9Clength",(new sc_Pair("\u1E9Cb",null)))),null)))))),null)))))))),null)))))))))));
   3462     BgL_nboyerzd2benchmarkzd2 = function() {
   3463         var args = null;
   3464         for (var sc_tmp = arguments.length - 1; sc_tmp >= 0; sc_tmp--) {
   3465             args = sc_cons(arguments[sc_tmp], args);
   3466         }
   3467         var n;
   3468         return ((n = ((args === null)?(0):(args.car))), (BgL_setupzd2boyerzd2()), (BgL_runzd2benchmarkzd2(("nboyer"+(sc_number2string(n))), (1), function() {
   3469             return (BgL_testzd2boyerzd2(n));
   3470         }, function(rewrites) {
   3471             if ((sc_isNumber(rewrites)))
   3472                 switch (n) {
   3473                 case (0):
   3474                     return (rewrites===(95024));
   3475                     break;
   3476                 case (1):
   3477                     return (rewrites===(591777));
   3478                     break;
   3479                 case (2):
   3480                     return (rewrites===(1813975));
   3481                     break;
   3482                 case (3):
   3483                     return (rewrites===(5375678));
   3484                     break;
   3485                 case (4):
   3486                     return (rewrites===(16445406));
   3487                     break;
   3488                 case (5):
   3489                     return (rewrites===(51507739));
   3490                     break;
   3491                 default:
   3492                     return true;
   3493                     break;
   3494                 }
   3495             else
   3496                 return false;
   3497         })));
   3498     };
   3499     BgL_setupzd2boyerzd2 = function() {
   3500         return true;
   3501     };
   3502     BgL_testzd2boyerzd2 = function() {
   3503         return true;
   3504     };
   3505     translate_term_nboyer = function(term) {
   3506         var lst;
   3507         return (!(term instanceof sc_Pair)?term:(new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((term.car))), ((lst = (term.cdr)), ((lst === null)?null:(new sc_Pair((translate_term_nboyer((lst.car))), (translate_args_nboyer((lst.cdr))))))))));
   3508     };
   3509     translate_args_nboyer = function(lst) {
   3510         var sc_lst_5;
   3511         var term;
   3512         return ((lst === null)?null:(new sc_Pair(((term = (lst.car)), (!(term instanceof sc_Pair)?term:(new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((term.car))), (translate_args_nboyer((term.cdr))))))), ((sc_lst_5 = (lst.cdr)), ((sc_lst_5 === null)?null:(new sc_Pair((translate_term_nboyer((sc_lst_5.car))), (translate_args_nboyer((sc_lst_5.cdr))))))))));
   3513     };
   3514     untranslate_term_nboyer = function(term) {
   3515         var optrOpnd;
   3516         var tail1131;
   3517         var L1127;
   3518         var falseHead1130;
   3519         var symbol_record;
   3520         if (!(term instanceof sc_Pair))
   3521             return term;
   3522         else
   3523             {
   3524                 (falseHead1130 = (new sc_Pair(null, null)));
   3525                 (L1127 = (term.cdr));
   3526                 (tail1131 = falseHead1130);
   3527                 while (!(L1127 === null)) {
   3528                     {
   3529                         (tail1131.cdr = (new sc_Pair((untranslate_term_nboyer((L1127.car))), null)));
   3530                         (tail1131 = (tail1131.cdr));
   3531                         (L1127 = (L1127.cdr));
   3532                     }
   3533                 }
   3534                 (optrOpnd = (falseHead1130.cdr));
   3535                 return (new sc_Pair(((symbol_record = (term.car)), (symbol_record[(0)])), optrOpnd));
   3536             }
   3537     };
   3538     BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer = function(sym) {
   3539         var r;
   3540         var x;
   3541         return ((x = (sc_assq(sym, BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer))), ((x!== false)?(x.cdr):((r = [sym, null]), (BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer = (new sc_Pair((new sc_Pair(sym, r)), BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer))), r)));
   3542     };
   3543     (BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer = null);
   3544     translate_alist_nboyer = function(alist) {
   3545         var sc_alist_6;
   3546         var term;
   3547         return ((alist === null)?null:(new sc_Pair((new sc_Pair((alist.car.car), ((term = (alist.car.cdr)), (!(term instanceof sc_Pair)?term:(new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((term.car))), (translate_args_nboyer((term.cdr))))))))), ((sc_alist_6 = (alist.cdr)), ((sc_alist_6 === null)?null:(new sc_Pair((new sc_Pair((sc_alist_6.car.car), (translate_term_nboyer((sc_alist_6.car.cdr))))), (translate_alist_nboyer((sc_alist_6.cdr))))))))));
   3548     };
   3549     apply_subst_nboyer = function(alist, term) {
   3550         var lst;
   3551         var temp_temp;
   3552         return (!(term instanceof sc_Pair)?((temp_temp = (sc_assq(term, alist))), ((temp_temp!== false)?(temp_temp.cdr):term)):(new sc_Pair((term.car), ((lst = (term.cdr)), ((lst === null)?null:(new sc_Pair((apply_subst_nboyer(alist, (lst.car))), (apply_subst_lst_nboyer(alist, (lst.cdr))))))))));
   3553     };
   3554     apply_subst_lst_nboyer = function(alist, lst) {
   3555         var sc_lst_7;
   3556         return ((lst === null)?null:(new sc_Pair((apply_subst_nboyer(alist, (lst.car))), ((sc_lst_7 = (lst.cdr)), ((sc_lst_7 === null)?null:(new sc_Pair((apply_subst_nboyer(alist, (sc_lst_7.car))), (apply_subst_lst_nboyer(alist, (sc_lst_7.cdr))))))))));
   3557     };
   3558     tautologyp_nboyer = function(sc_x_11, true_lst, false_lst) {
   3559         var tmp1125;
   3560         var x;
   3561         var tmp1126;
   3562         var sc_x_8;
   3563         var sc_tmp1125_9;
   3564         var sc_tmp1126_10;
   3565         var sc_x_11;
   3566         var true_lst;
   3567         var false_lst;
   3568         while (true) {
   3569             if ((((sc_tmp1126_10 = (is_term_equal_nboyer(sc_x_11, true_term_nboyer))), ((sc_tmp1126_10!== false)?sc_tmp1126_10:(is_term_member_nboyer(sc_x_11, true_lst))))!== false))
   3570                 return true;
   3571             else
   3572                 if ((((sc_tmp1125_9 = (is_term_equal_nboyer(sc_x_11, false_term_nboyer))), ((sc_tmp1125_9!== false)?sc_tmp1125_9:(is_term_member_nboyer(sc_x_11, false_lst))))!== false))
   3573                     return false;
   3574                 else
   3575                     if (!(sc_x_11 instanceof sc_Pair))
   3576                         return false;
   3577                     else
   3578                         if (((sc_x_11.car)===if_constructor_nboyer))
   3579                             if ((((sc_x_8 = (sc_x_11.cdr.car)), (tmp1126 = (is_term_equal_nboyer(sc_x_8, true_term_nboyer))), ((tmp1126!== false)?tmp1126:(is_term_member_nboyer(sc_x_8, true_lst))))!== false))
   3580                                 (sc_x_11 = (sc_x_11.cdr.cdr.car));
   3581                             else
   3582                                 if ((((x = (sc_x_11.cdr.car)), (tmp1125 = (is_term_equal_nboyer(x, false_term_nboyer))), ((tmp1125!== false)?tmp1125:(is_term_member_nboyer(x, false_lst))))!== false))
   3583                                     (sc_x_11 = (sc_x_11.cdr.cdr.cdr.car));
   3584                                 else
   3585                                     if (((tautologyp_nboyer((sc_x_11.cdr.cdr.car), (new sc_Pair((sc_x_11.cdr.car), true_lst)), false_lst))!== false))
   3586                                         {
   3587                                             (false_lst = (new sc_Pair((sc_x_11.cdr.car), false_lst)));
   3588                                             (sc_x_11 = (sc_x_11.cdr.cdr.cdr.car));
   3589                                         }
   3590                                     else
   3591                                         return false;
   3592                         else
   3593                             return false;
   3594         }
   3595     };
   3596     (if_constructor_nboyer = "\u1E9C*");
   3597     (rewrite_count_nboyer = (0));
   3598     rewrite_nboyer = function(term) {
   3599         var term2;
   3600         var sc_term_12;
   3601         var lst;
   3602         var symbol_record;
   3603         var sc_lst_13;
   3604         {
   3605             (++rewrite_count_nboyer);
   3606             if (!(term instanceof sc_Pair))
   3607                 return term;
   3608             else
   3609                 {
   3610                     (sc_term_12 = (new sc_Pair((term.car), ((sc_lst_13 = (term.cdr)), ((sc_lst_13 === null)?null:(new sc_Pair((rewrite_nboyer((sc_lst_13.car))), (rewrite_args_nboyer((sc_lst_13.cdr))))))))));
   3611                     (lst = ((symbol_record = (term.car)), (symbol_record[(1)])));
   3612                     while (true) {
   3613                         if ((lst === null))
   3614                             return sc_term_12;
   3615                         else
   3616                             if ((((term2 = ((lst.car).cdr.car)), (unify_subst_nboyer = null), (one_way_unify1_nboyer(sc_term_12, term2)))!== false))
   3617                                 return (rewrite_nboyer((apply_subst_nboyer(unify_subst_nboyer, ((lst.car).cdr.cdr.car)))));
   3618                             else
   3619                                 (lst = (lst.cdr));
   3620                     }
   3621                 }
   3622         }
   3623     };
   3624     rewrite_args_nboyer = function(lst) {
   3625         var sc_lst_14;
   3626         return ((lst === null)?null:(new sc_Pair((rewrite_nboyer((lst.car))), ((sc_lst_14 = (lst.cdr)), ((sc_lst_14 === null)?null:(new sc_Pair((rewrite_nboyer((sc_lst_14.car))), (rewrite_args_nboyer((sc_lst_14.cdr))))))))));
   3627     };
   3628     (unify_subst_nboyer = "\u1E9C*");
   3629     one_way_unify1_nboyer = function(term1, term2) {
   3630         var lst1;
   3631         var lst2;
   3632         var temp_temp;
   3633         if (!(term2 instanceof sc_Pair))
   3634             {
   3635                 (temp_temp = (sc_assq(term2, unify_subst_nboyer)));
   3636                 if ((temp_temp!== false))
   3637                     return (is_term_equal_nboyer(term1, (temp_temp.cdr)));
   3638                 else
   3639                     if ((sc_isNumber(term2)))
   3640                         return (sc_isEqual(term1, term2));
   3641                     else
   3642                         {
   3643                             (unify_subst_nboyer = (new sc_Pair((new sc_Pair(term2, term1)), unify_subst_nboyer)));
   3644                             return true;
   3645                         }
   3646             }
   3647         else
   3648             if (!(term1 instanceof sc_Pair))
   3649                 return false;
   3650             else
   3651                 if (((term1.car)===(term2.car)))
   3652                     {
   3653                         (lst1 = (term1.cdr));
   3654                         (lst2 = (term2.cdr));
   3655                         while (true) {
   3656                             if ((lst1 === null))
   3657                                 return (lst2 === null);
   3658                             else
   3659                                 if ((lst2 === null))
   3660                                     return false;
   3661                                 else
   3662                                     if (((one_way_unify1_nboyer((lst1.car), (lst2.car)))!== false))
   3663                                         {
   3664                                             (lst1 = (lst1.cdr));
   3665                                             (lst2 = (lst2.cdr));
   3666                                         }
   3667                                     else
   3668                                         return false;
   3669                         }
   3670                     }
   3671                 else
   3672                     return false;
   3673     };
   3674     (false_term_nboyer = "\u1E9C*");
   3675     (true_term_nboyer = "\u1E9C*");
   3676     trans_of_implies1_nboyer = function(n) {
   3677         var sc_n_15;
   3678         return ((sc_isEqual(n, (1)))?(sc_list("\u1E9Cimplies", (0), (1))):(sc_list("\u1E9Cand", (sc_list("\u1E9Cimplies", (n-(1)), n)), ((sc_n_15 = (n-(1))), ((sc_isEqual(sc_n_15, (1)))?(sc_list("\u1E9Cimplies", (0), (1))):(sc_list("\u1E9Cand", (sc_list("\u1E9Cimplies", (sc_n_15-(1)), sc_n_15)), (trans_of_implies1_nboyer((sc_n_15-(1)))))))))));
   3679     };
   3680     is_term_equal_nboyer = function(x, y) {
   3681         var lst1;
   3682         var lst2;
   3683         var r2;
   3684         var r1;
   3685         if ((x instanceof sc_Pair))
   3686             if ((y instanceof sc_Pair))
   3687                 if ((((r1 = (x.car)), (r2 = (y.car)), (r1===r2))!== false))
   3688                     {
   3689                         (lst1 = (x.cdr));
   3690                         (lst2 = (y.cdr));
   3691                         while (true) {
   3692                             if ((lst1 === null))
   3693                                 return (lst2 === null);
   3694                             else
   3695                                 if ((lst2 === null))
   3696                                     return false;
   3697                                 else
   3698                                     if (((is_term_equal_nboyer((lst1.car), (lst2.car)))!== false))
   3699                                         {
   3700                                             (lst1 = (lst1.cdr));
   3701                                             (lst2 = (lst2.cdr));
   3702                                         }
   3703                                     else
   3704                                         return false;
   3705                         }
   3706                     }
   3707                 else
   3708                     return false;
   3709             else
   3710                 return false;
   3711         else
   3712             return (sc_isEqual(x, y));
   3713     };
   3714     is_term_member_nboyer = function(x, lst) {
   3715         var x;
   3716         var lst;
   3717         while (true) {
   3718             if ((lst === null))
   3719                 return false;
   3720             else
   3721                 if (((is_term_equal_nboyer(x, (lst.car)))!== false))
   3722                     return true;
   3723                 else
   3724                     (lst = (lst.cdr));
   3725         }
   3726     };
   3727     BgL_setupzd2boyerzd2 = function() {
   3728         var symbol_record;
   3729         var value;
   3730         var BgL_sc_symbolzd2record_16zd2;
   3731         var sym;
   3732         var sc_sym_17;
   3733         var term;
   3734         var lst;
   3735         var sc_term_18;
   3736         var sc_term_19;
   3737         {
   3738             (BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer = null);
   3739             (if_constructor_nboyer = (BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer("\u1E9Cif")));
   3740             (false_term_nboyer = ((sc_term_19 = (new sc_Pair("\u1E9Cf",null))), (!(sc_term_19 instanceof sc_Pair)?sc_term_19:(new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((sc_term_19.car))), (translate_args_nboyer((sc_term_19.cdr))))))));
   3741             (true_term_nboyer = ((sc_term_18 = (new sc_Pair("\u1E9Ct",null))), (!(sc_term_18 instanceof sc_Pair)?sc_term_18:(new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((sc_term_18.car))), (translate_args_nboyer((sc_term_18.cdr))))))));
   3742             (lst = sc_const_3_nboyer);
   3743             while (!(lst === null)) {
   3744                 {
   3745                     (term = (lst.car));
   3746                     if (((term instanceof sc_Pair)&&(((term.car)==="\u1E9Cequal")&&((term.cdr.car) instanceof sc_Pair))))
   3747                         {
   3748                             (sc_sym_17 = ((term.cdr.car).car));
   3749                             (value = (new sc_Pair((!(term instanceof sc_Pair)?term:(new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((term.car))), (translate_args_nboyer((term.cdr)))))), ((sym = ((term.cdr.car).car)), (BgL_sc_symbolzd2record_16zd2 = (BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer(sym))), (BgL_sc_symbolzd2record_16zd2[(1)])))));
   3750                             (symbol_record = (BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer(sc_sym_17)));
   3751                             (symbol_record[(1)] = value);
   3752                         }
   3753                     else
   3754                         (sc_error("ADD-LEMMA did not like term:  ", term));
   3755                     (lst = (lst.cdr));
   3756                 }
   3757             }
   3758             return true;
   3759         }
   3760     };
   3761     BgL_testzd2boyerzd2 = function(n) {
   3762         var optrOpnd;
   3763         var term;
   3764         var sc_n_20;
   3765         var answer;
   3766         var sc_term_21;
   3767         var sc_term_22;
   3768         {
   3769             (rewrite_count_nboyer = (0));
   3770             (term = sc_const_4_nboyer);
   3771             (sc_n_20 = n);
   3772             while (!(sc_n_20=== 0)) {
   3773                 {
   3774                     (term = (sc_list("\u1E9Cor", term, (new sc_Pair("\u1E9Cf",null)))));
   3775                     (--sc_n_20);
   3776                 }
   3777             }
   3778             (sc_term_22 = term);
   3779             if (!(sc_term_22 instanceof sc_Pair))
   3780                 (optrOpnd = sc_term_22);
   3781             else
   3782                 (optrOpnd = (new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((sc_term_22.car))), (translate_args_nboyer((sc_term_22.cdr))))));
   3783             (sc_term_21 = (apply_subst_nboyer(((const_nboyer === null)?null:(new sc_Pair((new sc_Pair((const_nboyer.car.car), (translate_term_nboyer((const_nboyer.car.cdr))))), (translate_alist_nboyer((const_nboyer.cdr)))))), optrOpnd)));
   3784             (answer = (tautologyp_nboyer((rewrite_nboyer(sc_term_21)), null, null)));
   3785             (sc_write(rewrite_count_nboyer));
   3786             (sc_display(" rewrites"));
   3787             (sc_newline());
   3788             if ((answer!== false))
   3789                 return rewrite_count_nboyer;
   3790             else
   3791                 return false;
   3792         }
   3793     };
   3794 }
   3795 /* Exported Variables */
   3796 var BgL_parsezd2ze3nbzd2treesze3;
   3797 var BgL_earleyzd2benchmarkzd2;
   3798 var BgL_parsezd2ze3parsedzf3zc2;
   3799 var test;
   3800 var BgL_parsezd2ze3treesz31;
   3801 var BgL_makezd2parserzd2;
   3802 /* End Exports */
   3803 
   3804 var const_earley;
   3805 {
   3806     (const_earley = (new sc_Pair((new sc_Pair("\u1E9Cs",(new sc_Pair((new sc_Pair("\u1E9Ca",null)),(new sc_Pair((new sc_Pair("\u1E9Cs",(new sc_Pair("\u1E9Cs",null)))),null)))))),null)));
   3807     BgL_makezd2parserzd2 = function(grammar, lexer) {
   3808         var i;
   3809         var parser_descr;
   3810         var def_loop;
   3811         var nb_nts;
   3812         var names;
   3813         var steps;
   3814         var predictors;
   3815         var enders;
   3816         var starters;
   3817         var nts;
   3818         var sc_names_1;
   3819         var sc_steps_2;
   3820         var sc_predictors_3;
   3821         var sc_enders_4;
   3822         var sc_starters_5;
   3823         var nb_confs;
   3824         var BgL_sc_defzd2loop_6zd2;
   3825         var BgL_sc_nbzd2nts_7zd2;
   3826         var sc_nts_8;
   3827         var BgL_sc_defzd2loop_9zd2;
   3828         var ind;
   3829         {
   3830             ind = function(nt, sc_nts_10) {
   3831                 var i;
   3832                 {
   3833                     (i = ((sc_nts_10.length)-(1)));
   3834                     while (true) {
   3835                         if ((i>=(0)))
   3836                             if ((sc_isEqual((sc_nts_10[i]), nt)))
   3837                                 return i;
   3838                             else
   3839                                 (--i);
   3840                         else
   3841                             return false;
   3842                     }
   3843                 }
   3844             };
   3845             (sc_nts_8 = ((BgL_sc_defzd2loop_9zd2 = function(defs, sc_nts_11) {
   3846                 var rule_loop;
   3847                 var head;
   3848                 var def;
   3849                 return ((defs instanceof sc_Pair)?((def = (defs.car)), (head = (def.car)), (rule_loop = function(rules, sc_nts_12) {
   3850                     var nt;
   3851                     var l;
   3852                     var sc_nts_13;
   3853                     var rule;
   3854                     if ((rules instanceof sc_Pair))
   3855                         {
   3856                             (rule = (rules.car));
   3857                             (l = rule);
   3858                             (sc_nts_13 = sc_nts_12);
   3859                             while ((l instanceof sc_Pair)) {
   3860                                 {
   3861                                     (nt = (l.car));
   3862                                     (l = (l.cdr));
   3863                                     (sc_nts_13 = (((sc_member(nt, sc_nts_13))!== false)?sc_nts_13:(new sc_Pair(nt, sc_nts_13))));
   3864                                 }
   3865                             }
   3866                             return (rule_loop((rules.cdr), sc_nts_13));
   3867                         }
   3868                     else
   3869                         return (BgL_sc_defzd2loop_9zd2((defs.cdr), sc_nts_12));
   3870                 }), (rule_loop((def.cdr), (((sc_member(head, sc_nts_11))!== false)?sc_nts_11:(new sc_Pair(head, sc_nts_11)))))):(sc_list2vector((sc_reverse(sc_nts_11)))));
   3871             }), (BgL_sc_defzd2loop_9zd2(grammar, null))));
   3872             (BgL_sc_nbzd2nts_7zd2 = (sc_nts_8.length));
   3873             (nb_confs = (((BgL_sc_defzd2loop_6zd2 = function(defs, BgL_sc_nbzd2confs_14zd2) {
   3874                 var rule_loop;
   3875                 var def;
   3876                 return ((defs instanceof sc_Pair)?((def = (defs.car)), (rule_loop = function(rules, BgL_sc_nbzd2confs_15zd2) {
   3877                     var l;
   3878                     var BgL_sc_nbzd2confs_16zd2;
   3879                     var rule;
   3880                     if ((rules instanceof sc_Pair))
   3881                         {
   3882                             (rule = (rules.car));
   3883                             (l = rule);
   3884                             (BgL_sc_nbzd2confs_16zd2 = BgL_sc_nbzd2confs_15zd2);
   3885                             while ((l instanceof sc_Pair)) {
   3886                                 {
   3887                                     (l = (l.cdr));
   3888                                     (++BgL_sc_nbzd2confs_16zd2);
   3889                                 }
   3890                             }
   3891                             return (rule_loop((rules.cdr), (BgL_sc_nbzd2confs_16zd2+(1))));
   3892                         }
   3893                     else
   3894                         return (BgL_sc_defzd2loop_6zd2((defs.cdr), BgL_sc_nbzd2confs_15zd2));
   3895                 }), (rule_loop((def.cdr), BgL_sc_nbzd2confs_14zd2))):BgL_sc_nbzd2confs_14zd2);
   3896             }), (BgL_sc_defzd2loop_6zd2(grammar, (0))))+BgL_sc_nbzd2nts_7zd2));
   3897             (sc_starters_5 = (sc_makeVector(BgL_sc_nbzd2nts_7zd2, null)));
   3898             (sc_enders_4 = (sc_makeVector(BgL_sc_nbzd2nts_7zd2, null)));
   3899             (sc_predictors_3 = (sc_makeVector(BgL_sc_nbzd2nts_7zd2, null)));
   3900             (sc_steps_2 = (sc_makeVector(nb_confs, false)));
   3901             (sc_names_1 = (sc_makeVector(nb_confs, false)));
   3902             (nts = sc_nts_8);
   3903             (starters = sc_starters_5);
   3904             (enders = sc_enders_4);
   3905             (predictors = sc_predictors_3);
   3906             (steps = sc_steps_2);
   3907             (names = sc_names_1);
   3908             (nb_nts = (sc_nts_8.length));
   3909             (i = (nb_nts-(1)));
   3910             while ((i>=(0))) {
   3911                 {
   3912                     (sc_steps_2[i] = (i-nb_nts));
   3913                     (sc_names_1[i] = (sc_list((sc_nts_8[i]), (0))));
   3914                     (sc_enders_4[i] = (sc_list(i)));
   3915                     (--i);
   3916                 }
   3917             }
   3918             def_loop = function(defs, conf) {
   3919                 var rule_loop;
   3920                 var head;
   3921                 var def;
   3922                 return ((defs instanceof sc_Pair)?((def = (defs.car)), (head = (def.car)), (rule_loop = function(rules, conf, rule_num) {
   3923                     var i;
   3924                     var sc_i_17;
   3925                     var nt;
   3926                     var l;
   3927                     var sc_conf_18;
   3928                     var sc_i_19;
   3929                     var rule;
   3930                     if ((rules instanceof sc_Pair))
   3931                         {
   3932                             (rule = (rules.car));
   3933                             (names[conf] = (sc_list(head, rule_num)));
   3934                             (sc_i_19 = (ind(head, nts)));
   3935                             (starters[sc_i_19] = (new sc_Pair(conf, (starters[sc_i_19]))));
   3936                             (l = rule);
   3937                             (sc_conf_18 = conf);
   3938                             while ((l instanceof sc_Pair)) {
   3939                                 {
   3940                                     (nt = (l.car));
   3941                                     (steps[sc_conf_18] = (ind(nt, nts)));
   3942                                     (sc_i_17 = (ind(nt, nts)));
   3943                                     (predictors[sc_i_17] = (new sc_Pair(sc_conf_18, (predictors[sc_i_17]))));
   3944                                     (l = (l.cdr));
   3945                                     (++sc_conf_18);
   3946                                 }
   3947                             }
   3948                             (steps[sc_conf_18] = ((ind(head, nts))-nb_nts));
   3949                             (i = (ind(head, nts)));
   3950                             (enders[i] = (new sc_Pair(sc_conf_18, (enders[i]))));
   3951                             return (rule_loop((rules.cdr), (sc_conf_18+(1)), (rule_num+(1))));
   3952                         }
   3953                     else
   3954                         return (def_loop((defs.cdr), conf));
   3955                 }), (rule_loop((def.cdr), conf, (1)))):undefined);
   3956             };
   3957             (def_loop(grammar, (sc_nts_8.length)));
   3958             (parser_descr = [lexer, sc_nts_8, sc_starters_5, sc_enders_4, sc_predictors_3, sc_steps_2, sc_names_1]);
   3959             return function(input) {
   3960                 var optrOpnd;
   3961                 var sc_optrOpnd_20;
   3962                 var sc_optrOpnd_21;
   3963                 var sc_optrOpnd_22;
   3964                 var loop1;
   3965                 var BgL_sc_stateza2_23za2;
   3966                 var toks;
   3967                 var BgL_sc_nbzd2nts_24zd2;
   3968                 var sc_steps_25;
   3969                 var sc_enders_26;
   3970                 var state_num;
   3971                 var BgL_sc_statesza2_27za2;
   3972                 var states;
   3973                 var i;
   3974                 var conf;
   3975                 var l;
   3976                 var tok_nts;
   3977                 var sc_i_28;
   3978                 var sc_i_29;
   3979                 var l1;
   3980                 var l2;
   3981                 var tok;
   3982                 var tail1129;
   3983                 var L1125;
   3984                 var goal_enders;
   3985                 var BgL_sc_statesza2_30za2;
   3986                 var BgL_sc_nbzd2nts_31zd2;
   3987                 var BgL_sc_nbzd2confs_32zd2;
   3988                 var nb_toks;
   3989                 var goal_starters;
   3990                 var sc_states_33;
   3991                 var BgL_sc_nbzd2confs_34zd2;
   3992                 var BgL_sc_nbzd2toks_35zd2;
   3993                 var sc_toks_36;
   3994                 var falseHead1128;
   3995                 var sc_names_37;
   3996                 var sc_steps_38;
   3997                 var sc_predictors_39;
   3998                 var sc_enders_40;
   3999                 var sc_starters_41;
   4000                 var sc_nts_42;
   4001                 var lexer;
   4002                 var sc_ind_43;
   4003                 var make_states;
   4004                 var BgL_sc_confzd2setzd2getza2_44za2;
   4005                 var conf_set_merge_new_bang;
   4006                 var conf_set_adjoin;
   4007                 var BgL_sc_confzd2setzd2adjoinza2_45za2;
   4008                 var BgL_sc_confzd2setzd2adjoinza2za2_46z00;
   4009                 var conf_set_union;
   4010                 var forw;
   4011                 var is_parsed;
   4012                 var deriv_trees;
   4013                 var BgL_sc_derivzd2treesza2_47z70;
   4014                 var nb_deriv_trees;
   4015                 var BgL_sc_nbzd2derivzd2treesza2_48za2;
   4016                 {
   4017                     sc_ind_43 = function(nt, sc_nts_49) {
   4018                         var i;
   4019                         {
   4020                             (i = ((sc_nts_49.length)-(1)));
   4021                             while (true) {
   4022                                 if ((i>=(0)))
   4023                                     if ((sc_isEqual((sc_nts_49[i]), nt)))
   4024                                         return i;
   4025                                     else
   4026                                         (--i);
   4027                                 else
   4028                                     return false;
   4029                             }
   4030                         }
   4031                     };
   4032                     make_states = function(BgL_sc_nbzd2toks_50zd2, BgL_sc_nbzd2confs_51zd2) {
   4033                         var v;
   4034                         var i;
   4035                         var sc_states_52;
   4036                         {
   4037                             (sc_states_52 = (sc_makeVector((BgL_sc_nbzd2toks_50zd2+(1)), false)));
   4038                             (i = BgL_sc_nbzd2toks_50zd2);
   4039                             while ((i>=(0))) {
   4040                                 {
   4041                                     (v = (sc_makeVector((BgL_sc_nbzd2confs_51zd2+(1)), false)));
   4042                                     (v[(0)] = (-1));
   4043                                     (sc_states_52[i] = v);
   4044                                     (--i);
   4045                                 }
   4046                             }
   4047                             return sc_states_52;
   4048                         }
   4049                     };
   4050                     BgL_sc_confzd2setzd2getza2_44za2 = function(state, BgL_sc_statezd2num_53zd2, sc_conf_54) {
   4051                         var conf_set;
   4052                         var BgL_sc_confzd2set_55zd2;
   4053                         return ((BgL_sc_confzd2set_55zd2 = (state[(sc_conf_54+(1))])), ((BgL_sc_confzd2set_55zd2!== false)?BgL_sc_confzd2set_55zd2:((conf_set = (sc_makeVector((BgL_sc_statezd2num_53zd2+(6)), false))), (conf_set[(1)] = (-3)), (conf_set[(2)] = (-1)), (conf_set[(3)] = (-1)), (conf_set[(4)] = (-1)), (state[(sc_conf_54+(1))] = conf_set), conf_set)));
   4054                     };
   4055                     conf_set_merge_new_bang = function(conf_set) {
   4056                         return ((conf_set[((conf_set[(1)])+(5))] = (conf_set[(4)])), (conf_set[(1)] = (conf_set[(3)])), (conf_set[(3)] = (-1)), (conf_set[(4)] = (-1)));
   4057                     };
   4058                     conf_set_adjoin = function(state, conf_set, sc_conf_56, i) {
   4059                         var tail;
   4060                         return ((tail = (conf_set[(3)])), (conf_set[(i+(5))] = (-1)), (conf_set[(tail+(5))] = i), (conf_set[(3)] = i), ((tail<(0))?((conf_set[(0)] = (state[(0)])), (state[(0)] = sc_conf_56)):undefined));
   4061                     };
   4062                     BgL_sc_confzd2setzd2adjoinza2_45za2 = function(sc_states_57, BgL_sc_statezd2num_58zd2, l, i) {
   4063                         var conf_set;
   4064                         var sc_conf_59;
   4065                         var l1;
   4066                         var state;
   4067                         {
   4068                             (state = (sc_states_57[BgL_sc_statezd2num_58zd2]));
   4069                             (l1 = l);
   4070                             while ((l1 instanceof sc_Pair)) {
   4071                                 {
   4072                                     (sc_conf_59 = (l1.car));
   4073                                     (conf_set = (BgL_sc_confzd2setzd2getza2_44za2(state, BgL_sc_statezd2num_58zd2, sc_conf_59)));
   4074                                     if (((conf_set[(i+(5))])=== false))
   4075                                         {
   4076                                             (conf_set_adjoin(state, conf_set, sc_conf_59, i));
   4077                                             (l1 = (l1.cdr));
   4078                                         }
   4079                                     else
   4080                                         (l1 = (l1.cdr));
   4081                                 }
   4082                             }
   4083                             return undefined;
   4084                         }
   4085                     };
   4086                     BgL_sc_confzd2setzd2adjoinza2za2_46z00 = function(sc_states_60, BgL_sc_statesza2_61za2, BgL_sc_statezd2num_62zd2, sc_conf_63, i) {
   4087                         var BgL_sc_confzd2setza2_64z70;
   4088                         var BgL_sc_stateza2_65za2;
   4089                         var conf_set;
   4090                         var state;
   4091                         return ((state = (sc_states_60[BgL_sc_statezd2num_62zd2])), ((((conf_set = (state[(sc_conf_63+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false)?((BgL_sc_stateza2_65za2 = (BgL_sc_statesza2_61za2[BgL_sc_statezd2num_62zd2])), (BgL_sc_confzd2setza2_64z70 = (BgL_sc_confzd2setzd2getza2_44za2(BgL_sc_stateza2_65za2, BgL_sc_statezd2num_62zd2, sc_conf_63))), (((BgL_sc_confzd2setza2_64z70[(i+(5))])=== false)?(conf_set_adjoin(BgL_sc_stateza2_65za2, BgL_sc_confzd2setza2_64z70, sc_conf_63, i)):undefined), true):false));
   4092                     };
   4093                     conf_set_union = function(state, conf_set, sc_conf_66, other_set) {
   4094                         var i;
   4095                         {
   4096                             (i = (other_set[(2)]));
   4097                             while ((i>=(0))) {
   4098                                 if (((conf_set[(i+(5))])=== false))
   4099                                     {
   4100                                         (conf_set_adjoin(state, conf_set, sc_conf_66, i));
   4101                                         (i = (other_set[(i+(5))]));
   4102                                     }
   4103                                 else
   4104                                     (i = (other_set[(i+(5))]));
   4105                             }
   4106                             return undefined;
   4107                         }
   4108                     };
   4109                     forw = function(sc_states_67, BgL_sc_statezd2num_68zd2, sc_starters_69, sc_enders_70, sc_predictors_71, sc_steps_72, sc_nts_73) {
   4110                         var next_set;
   4111                         var next;
   4112                         var conf_set;
   4113                         var ender;
   4114                         var l;
   4115                         var starter_set;
   4116                         var starter;
   4117                         var sc_l_74;
   4118                         var sc_loop1_75;
   4119                         var head;
   4120                         var BgL_sc_confzd2set_76zd2;
   4121                         var BgL_sc_statezd2num_77zd2;
   4122                         var state;
   4123                         var sc_states_78;
   4124                         var preds;
   4125                         var BgL_sc_confzd2set_79zd2;
   4126                         var step;
   4127                         var sc_conf_80;
   4128                         var BgL_sc_nbzd2nts_81zd2;
   4129                         var sc_state_82;
   4130                         {
   4131                             (sc_state_82 = (sc_states_67[BgL_sc_statezd2num_68zd2]));
   4132                             (BgL_sc_nbzd2nts_81zd2 = (sc_nts_73.length));
   4133                             while (true) {
   4134                                 {
   4135                                     (sc_conf_80 = (sc_state_82[(0)]));
   4136                                     if ((sc_conf_80>=(0)))
   4137                                         {
   4138                                             (step = (sc_steps_72[sc_conf_80]));
   4139                                             (BgL_sc_confzd2set_79zd2 = (sc_state_82[(sc_conf_80+(1))]));
   4140                                             (head = (BgL_sc_confzd2set_79zd2[(4)]));
   4141                                             (sc_state_82[(0)] = (BgL_sc_confzd2set_79zd2[(0)]));
   4142                                             (conf_set_merge_new_bang(BgL_sc_confzd2set_79zd2));
   4143                                             if ((step>=(0)))
   4144                                                 {
   4145                                                     (sc_l_74 = (sc_starters_69[step]));
   4146                                                     while ((sc_l_74 instanceof sc_Pair)) {
   4147                                                         {
   4148                                                             (starter = (sc_l_74.car));
   4149                                                             (starter_set = (BgL_sc_confzd2setzd2getza2_44za2(sc_state_82, BgL_sc_statezd2num_68zd2, starter)));
   4150                                                             if (((starter_set[(BgL_sc_statezd2num_68zd2+(5))])=== false))
   4151                                                                 {
   4152                                                                     (conf_set_adjoin(sc_state_82, starter_set, starter, BgL_sc_statezd2num_68zd2));
   4153                                                                     (sc_l_74 = (sc_l_74.cdr));
   4154                                                                 }
   4155                                                             else
   4156                                                                 (sc_l_74 = (sc_l_74.cdr));
   4157                                                         }
   4158                                                     }
   4159                                                     (l = (sc_enders_70[step]));
   4160                                                     while ((l instanceof sc_Pair)) {
   4161                                                         {
   4162                                                             (ender = (l.car));
   4163                                                             if ((((conf_set = (sc_state_82[(ender+(1))])), ((conf_set!== false)?(conf_set[(BgL_sc_statezd2num_68zd2+(5))]):false))!== false))
   4164                                                                 {
   4165                                                                     (next = (sc_conf_80+(1)));
   4166                                                                     (next_set = (BgL_sc_confzd2setzd2getza2_44za2(sc_state_82, BgL_sc_statezd2num_68zd2, next)));
   4167                                                                     (conf_set_union(sc_state_82, next_set, next, BgL_sc_confzd2set_79zd2));
   4168                                                                     (l = (l.cdr));
   4169                                                                 }
   4170                                                             else
   4171                                                                 (l = (l.cdr));
   4172                                                         }
   4173                                                     }
   4174                                                 }
   4175                                             else
   4176                                                 {
   4177                                                     (preds = (sc_predictors_71[(step+BgL_sc_nbzd2nts_81zd2)]));
   4178                                                     (sc_states_78 = sc_states_67);
   4179                                                     (state = sc_state_82);
   4180                                                     (BgL_sc_statezd2num_77zd2 = BgL_sc_statezd2num_68zd2);
   4181                                                     (BgL_sc_confzd2set_76zd2 = BgL_sc_confzd2set_79zd2);
   4182                                                     sc_loop1_75 = function(l) {
   4183                                                         var sc_state_83;
   4184                                                         var BgL_sc_nextzd2set_84zd2;
   4185                                                         var sc_next_85;
   4186                                                         var pred_set;
   4187                                                         var i;
   4188                                                         var pred;
   4189                                                         if ((l instanceof sc_Pair))
   4190                                                             {
   4191                                                                 (pred = (l.car));
   4192                                                                 (i = head);
   4193                                                                 while ((i>=(0))) {
   4194                                                                     {
   4195                                                                         (pred_set = ((sc_state_83 = (sc_states_78[i])), (sc_state_83[(pred+(1))])));
   4196                                                                         if ((pred_set!== false))
   4197                                                                             {
   4198                                                                                 (sc_next_85 = (pred+(1)));
   4199                                                                                 (BgL_sc_nextzd2set_84zd2 = (BgL_sc_confzd2setzd2getza2_44za2(state, BgL_sc_statezd2num_77zd2, sc_next_85)));
   4200                                                                                 (conf_set_union(state, BgL_sc_nextzd2set_84zd2, sc_next_85, pred_set));
   4201                                                                             }
   4202                                                                         (i = (BgL_sc_confzd2set_76zd2[(i+(5))]));
   4203                                                                     }
   4204                                                                 }
   4205                                                                 return (sc_loop1_75((l.cdr)));
   4206                                                             }
   4207                                                         else
   4208                                                             return undefined;
   4209                                                     };
   4210                                                     (sc_loop1_75(preds));
   4211                                                 }
   4212                                         }
   4213                                     else
   4214                                         return undefined;
   4215                                 }
   4216                             }
   4217                         }
   4218                     };
   4219                     is_parsed = function(nt, i, j, sc_nts_86, sc_enders_87, sc_states_88) {
   4220                         var conf_set;
   4221                         var state;
   4222                         var sc_conf_89;
   4223                         var l;
   4224                         var BgL_sc_ntza2_90za2;
   4225                         {
   4226                             (BgL_sc_ntza2_90za2 = (sc_ind_43(nt, sc_nts_86)));
   4227                             if ((BgL_sc_ntza2_90za2!== false))
   4228                                 {
   4229                                     (sc_nts_86.length);
   4230                                     (l = (sc_enders_87[BgL_sc_ntza2_90za2]));
   4231                                     while (true) {
   4232                                         if ((l instanceof sc_Pair))
   4233                                             {
   4234                                                 (sc_conf_89 = (l.car));
   4235                                                 if ((((state = (sc_states_88[j])), (conf_set = (state[(sc_conf_89+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false))
   4236                                                     return true;
   4237                                                 else
   4238                                                     (l = (l.cdr));
   4239                                             }
   4240                                         else
   4241                                             return false;
   4242                                     }
   4243                                 }
   4244                             else
   4245                                 return false;
   4246                         }
   4247                     };
   4248                     deriv_trees = function(sc_conf_91, i, j, sc_enders_92, sc_steps_93, sc_names_94, sc_toks_95, sc_states_96, BgL_sc_nbzd2nts_97zd2) {
   4249                         var sc_loop1_98;
   4250                         var prev;
   4251                         var name;
   4252                         return ((name = (sc_names_94[sc_conf_91])), ((name!== false)?((sc_conf_91<BgL_sc_nbzd2nts_97zd2)?(sc_list((sc_list(name, ((sc_toks_95[i]).car))))):(sc_list((sc_list(name))))):((prev = (sc_conf_91-(1))), (sc_loop1_98 = function(l1, l2) {
   4253                             var loop2;
   4254                             var ender_set;
   4255                             var state;
   4256                             var ender;
   4257                             var l1;
   4258                             var l2;
   4259                             while (true) {
   4260                                 if ((l1 instanceof sc_Pair))
   4261                                     {
   4262                                         (ender = (l1.car));
   4263                                         (ender_set = ((state = (sc_states_96[j])), (state[(ender+(1))])));
   4264                                         if ((ender_set!== false))
   4265                                             {
   4266                                                 loop2 = function(k, l2) {
   4267                                                     var loop3;
   4268                                                     var ender_trees;
   4269                                                     var prev_trees;
   4270                                                     var conf_set;
   4271                                                     var sc_state_99;
   4272                                                     var k;
   4273                                                     var l2;
   4274                                                     while (true) {
   4275                                                         if ((k>=(0)))
   4276                                                             if (((k>=i)&&(((sc_state_99 = (sc_states_96[k])), (conf_set = (sc_state_99[(prev+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false)))
   4277                                                                 {
   4278                                                                     (prev_trees = (deriv_trees(prev, i, k, sc_enders_92, sc_steps_93, sc_names_94, sc_toks_95, sc_states_96, BgL_sc_nbzd2nts_97zd2)));
   4279                                                                     (ender_trees = (deriv_trees(ender, k, j, sc_enders_92, sc_steps_93, sc_names_94, sc_toks_95, sc_states_96, BgL_sc_nbzd2nts_97zd2)));
   4280                                                                     loop3 = function(l3, l2) {
   4281                                                                         var l4;
   4282                                                                         var sc_l2_100;
   4283                                                                         var ender_tree;
   4284                                                                         if ((l3 instanceof sc_Pair))
   4285                                                                             {
   4286                                                                                 (ender_tree = (sc_list((l3.car))));
   4287                                                                                 (l4 = prev_trees);
   4288                                                                                 (sc_l2_100 = l2);
   4289                                                                                 while ((l4 instanceof sc_Pair)) {
   4290                                                                                     {
   4291                                                                                         (sc_l2_100 = (new sc_Pair((sc_append((l4.car), ender_tree)), sc_l2_100)));
   4292                                                                                         (l4 = (l4.cdr));
   4293                                                                                     }
   4294                                                                                 }
   4295                                                                                 return (loop3((l3.cdr), sc_l2_100));
   4296                                                                             }
   4297                                                                         else
   4298                                                                             return (loop2((ender_set[(k+(5))]), l2));
   4299                                                                     };
   4300                                                                     return (loop3(ender_trees, l2));
   4301                                                                 }
   4302                                                             else
   4303                                                                 (k = (ender_set[(k+(5))]));
   4304                                                         else
   4305                                                             return (sc_loop1_98((l1.cdr), l2));
   4306                                                     }
   4307                                                 };
   4308                                                 return (loop2((ender_set[(2)]), l2));
   4309                                             }
   4310                                         else
   4311                                             (l1 = (l1.cdr));
   4312                                     }
   4313                                 else
   4314                                     return l2;
   4315                             }
   4316                         }), (sc_loop1_98((sc_enders_92[(sc_steps_93[prev])]), null)))));
   4317                     };
   4318                     BgL_sc_derivzd2treesza2_47z70 = function(nt, i, j, sc_nts_101, sc_enders_102, sc_steps_103, sc_names_104, sc_toks_105, sc_states_106) {
   4319                         var conf_set;
   4320                         var state;
   4321                         var sc_conf_107;
   4322                         var l;
   4323                         var trees;
   4324                         var BgL_sc_nbzd2nts_108zd2;
   4325                         var BgL_sc_ntza2_109za2;
   4326                         {
   4327                             (BgL_sc_ntza2_109za2 = (sc_ind_43(nt, sc_nts_101)));
   4328                             if ((BgL_sc_ntza2_109za2!== false))
   4329                                 {
   4330                                     (BgL_sc_nbzd2nts_108zd2 = (sc_nts_101.length));
   4331                                     (l = (sc_enders_102[BgL_sc_ntza2_109za2]));
   4332                                     (trees = null);
   4333                                     while ((l instanceof sc_Pair)) {
   4334                                         {
   4335                                             (sc_conf_107 = (l.car));
   4336                                             if ((((state = (sc_states_106[j])), (conf_set = (state[(sc_conf_107+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false))
   4337                                                 {
   4338                                                     (l = (l.cdr));
   4339                                                     (trees = (sc_append((deriv_trees(sc_conf_107, i, j, sc_enders_102, sc_steps_103, sc_names_104, sc_toks_105, sc_states_106, BgL_sc_nbzd2nts_108zd2)), trees)));
   4340                                                 }
   4341                                             else
   4342                                                 (l = (l.cdr));
   4343                                         }
   4344                                     }
   4345                                     return trees;
   4346                                 }
   4347                             else
   4348                                 return false;
   4349                         }
   4350                     };
   4351                     nb_deriv_trees = function(sc_conf_110, i, j, sc_enders_111, sc_steps_112, sc_toks_113, sc_states_114, BgL_sc_nbzd2nts_115zd2) {
   4352                         var sc_loop1_116;
   4353                         var tmp1124;
   4354                         var prev;
   4355                         return ((prev = (sc_conf_110-(1))), ((((tmp1124 = (sc_conf_110<BgL_sc_nbzd2nts_115zd2)), ((tmp1124!== false)?tmp1124:((sc_steps_112[prev])<(0))))!== false)?(1):((sc_loop1_116 = function(l, sc_n_118) {
   4356                             var nb_ender_trees;
   4357                             var nb_prev_trees;
   4358                             var conf_set;
   4359                             var state;
   4360                             var k;
   4361                             var n;
   4362                             var ender_set;
   4363                             var sc_state_117;
   4364                             var ender;
   4365                             var l;
   4366                             var sc_n_118;
   4367                             while (true) {
   4368                                 if ((l instanceof sc_Pair))
   4369                                     {
   4370                                         (ender = (l.car));
   4371                                         (ender_set = ((sc_state_117 = (sc_states_114[j])), (sc_state_117[(ender+(1))])));
   4372                                         if ((ender_set!== false))
   4373                                             {
   4374                                                 (k = (ender_set[(2)]));
   4375                                                 (n = sc_n_118);
   4376                                                 while ((k>=(0))) {
   4377                                                     if (((k>=i)&&(((state = (sc_states_114[k])), (conf_set = (state[(prev+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false)))
   4378                                                         {
   4379                                                             (nb_prev_trees = (nb_deriv_trees(prev, i, k, sc_enders_111, sc_steps_112, sc_toks_113, sc_states_114, BgL_sc_nbzd2nts_115zd2)));
   4380                                                             (nb_ender_trees = (nb_deriv_trees(ender, k, j, sc_enders_111, sc_steps_112, sc_toks_113, sc_states_114, BgL_sc_nbzd2nts_115zd2)));
   4381                                                             (k = (ender_set[(k+(5))]));
   4382                                                             (n +=(nb_prev_trees*nb_ender_trees));
   4383                                                         }
   4384                                                     else
   4385                                                         (k = (ender_set[(k+(5))]));
   4386                                                 }
   4387                                                 return (sc_loop1_116((l.cdr), n));
   4388                                             }
   4389                                         else
   4390                                             (l = (l.cdr));
   4391                                     }
   4392                                 else
   4393                                     return sc_n_118;
   4394                             }
   4395                         }), (sc_loop1_116((sc_enders_111[(sc_steps_112[prev])]), (0))))));
   4396                     };
   4397                     BgL_sc_nbzd2derivzd2treesza2_48za2 = function(nt, i, j, sc_nts_119, sc_enders_120, sc_steps_121, sc_toks_122, sc_states_123) {
   4398                         var conf_set;
   4399                         var state;
   4400                         var sc_conf_124;
   4401                         var l;
   4402                         var nb_trees;
   4403                         var BgL_sc_nbzd2nts_125zd2;
   4404                         var BgL_sc_ntza2_126za2;
   4405                         {
   4406                             (BgL_sc_ntza2_126za2 = (sc_ind_43(nt, sc_nts_119)));
   4407                             if ((BgL_sc_ntza2_126za2!== false))
   4408                                 {
   4409                                     (BgL_sc_nbzd2nts_125zd2 = (sc_nts_119.length));
   4410                                     (l = (sc_enders_120[BgL_sc_ntza2_126za2]));
   4411                                     (nb_trees = (0));
   4412                                     while ((l instanceof sc_Pair)) {
   4413                                         {
   4414                                             (sc_conf_124 = (l.car));
   4415                                             if ((((state = (sc_states_123[j])), (conf_set = (state[(sc_conf_124+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false))
   4416                                                 {
   4417                                                     (l = (l.cdr));
   4418                                                     (nb_trees = ((nb_deriv_trees(sc_conf_124, i, j, sc_enders_120, sc_steps_121, sc_toks_122, sc_states_123, BgL_sc_nbzd2nts_125zd2))+nb_trees));
   4419                                                 }
   4420                                             else
   4421                                                 (l = (l.cdr));
   4422                                         }
   4423                                     }
   4424                                     return nb_trees;
   4425                                 }
   4426                             else
   4427                                 return false;
   4428                         }
   4429                     };
   4430                     (lexer = (parser_descr[(0)]));
   4431                     (sc_nts_42 = (parser_descr[(1)]));
   4432                     (sc_starters_41 = (parser_descr[(2)]));
   4433                     (sc_enders_40 = (parser_descr[(3)]));
   4434                     (sc_predictors_39 = (parser_descr[(4)]));
   4435                     (sc_steps_38 = (parser_descr[(5)]));
   4436                     (sc_names_37 = (parser_descr[(6)]));
   4437                     (falseHead1128 = (new sc_Pair(null, null)));
   4438                     (L1125 = (lexer(input)));
   4439                     (tail1129 = falseHead1128);
   4440                     while (!(L1125 === null)) {
   4441                         {
   4442                             (tok = (L1125.car));
   4443                             (l1 = (tok.cdr));
   4444                             (l2 = null);
   4445                             while ((l1 instanceof sc_Pair)) {
   4446                                 {
   4447                                     (sc_i_29 = (sc_ind_43((l1.car), sc_nts_42)));
   4448                                     if ((sc_i_29!== false))
   4449                                         {
   4450                                             (l1 = (l1.cdr));
   4451                                             (l2 = (new sc_Pair(sc_i_29, l2)));
   4452                                         }
   4453                                     else
   4454                                         (l1 = (l1.cdr));
   4455                                 }
   4456                             }
   4457                             (sc_optrOpnd_22 = (new sc_Pair((tok.car), (sc_reverse(l2)))));
   4458                             (sc_optrOpnd_21 = (new sc_Pair(sc_optrOpnd_22, null)));
   4459                             (tail1129.cdr = sc_optrOpnd_21);
   4460                             (tail1129 = (tail1129.cdr));
   4461                             (L1125 = (L1125.cdr));
   4462                         }
   4463                     }
   4464                     (sc_optrOpnd_20 = (falseHead1128.cdr));
   4465                     (sc_toks_36 = (sc_list2vector(sc_optrOpnd_20)));
   4466                     (BgL_sc_nbzd2toks_35zd2 = (sc_toks_36.length));
   4467                     (BgL_sc_nbzd2confs_34zd2 = (sc_steps_38.length));
   4468                     (sc_states_33 = (make_states(BgL_sc_nbzd2toks_35zd2, BgL_sc_nbzd2confs_34zd2)));
   4469                     (goal_starters = (sc_starters_41[(0)]));
   4470                     (BgL_sc_confzd2setzd2adjoinza2_45za2(sc_states_33, (0), goal_starters, (0)));
   4471                     (forw(sc_states_33, (0), sc_starters_41, sc_enders_40, sc_predictors_39, sc_steps_38, sc_nts_42));
   4472                     (sc_i_28 = (0));
   4473                     while ((sc_i_28<BgL_sc_nbzd2toks_35zd2)) {
   4474                         {
   4475                             (tok_nts = ((sc_toks_36[sc_i_28]).cdr));
   4476                             (BgL_sc_confzd2setzd2adjoinza2_45za2(sc_states_33, (sc_i_28+(1)), tok_nts, sc_i_28));
   4477                             (forw(sc_states_33, (sc_i_28+(1)), sc_starters_41, sc_enders_40, sc_predictors_39, sc_steps_38, sc_nts_42));
   4478                             (++sc_i_28);
   4479                         }
   4480                     }
   4481                     (nb_toks = (sc_toks_36.length));
   4482                     (BgL_sc_nbzd2confs_32zd2 = (sc_steps_38.length));
   4483                     (BgL_sc_nbzd2nts_31zd2 = (sc_nts_42.length));
   4484                     (BgL_sc_statesza2_30za2 = (make_states(nb_toks, BgL_sc_nbzd2confs_32zd2)));
   4485                     (goal_enders = (sc_enders_40[(0)]));
   4486                     (l = goal_enders);
   4487                     while ((l instanceof sc_Pair)) {
   4488                         {
   4489                             (conf = (l.car));
   4490                             (BgL_sc_confzd2setzd2adjoinza2za2_46z00(sc_states_33, BgL_sc_statesza2_30za2, nb_toks, conf, (0)));
   4491                             (l = (l.cdr));
   4492                         }
   4493                     }
   4494                     (i = nb_toks);
   4495                     while ((i>=(0))) {
   4496                         {
   4497                             (states = sc_states_33);
   4498                             (BgL_sc_statesza2_27za2 = BgL_sc_statesza2_30za2);
   4499                             (state_num = i);
   4500                             (sc_enders_26 = sc_enders_40);
   4501                             (sc_steps_25 = sc_steps_38);
   4502                             (BgL_sc_nbzd2nts_24zd2 = BgL_sc_nbzd2nts_31zd2);
   4503                             (toks = sc_toks_36);
   4504                             (BgL_sc_stateza2_23za2 = (BgL_sc_statesza2_30za2[i]));
   4505                             loop1 = function() {
   4506                                 var sc_loop1_127;
   4507                                 var prev;
   4508                                 var BgL_sc_statesza2_128za2;
   4509                                 var sc_states_129;
   4510                                 var j;
   4511                                 var i;
   4512                                 var sc_i_130;
   4513                                 var head;
   4514                                 var conf_set;
   4515                                 var sc_conf_131;
   4516                                 {
   4517                                     (sc_conf_131 = (BgL_sc_stateza2_23za2[(0)]));
   4518                                     if ((sc_conf_131>=(0)))
   4519                                         {
   4520                                             (conf_set = (BgL_sc_stateza2_23za2[(sc_conf_131+(1))]));
   4521                                             (head = (conf_set[(4)]));
   4522                                             (BgL_sc_stateza2_23za2[(0)] = (conf_set[(0)]));
   4523                                             (conf_set_merge_new_bang(conf_set));
   4524                                             (sc_i_130 = head);
   4525                                             while ((sc_i_130>=(0))) {
   4526                                                 {
   4527                                                     (i = sc_i_130);
   4528                                                     (j = state_num);
   4529                                                     (sc_states_129 = states);
   4530                                                     (BgL_sc_statesza2_128za2 = BgL_sc_statesza2_27za2);
   4531                                                     (prev = (sc_conf_131-(1)));
   4532                                                     if (((sc_conf_131>=BgL_sc_nbzd2nts_24zd2)&&((sc_steps_25[prev])>=(0))))
   4533                                                         {
   4534                                                             sc_loop1_127 = function(l) {
   4535                                                                 var k;
   4536                                                                 var ender_set;
   4537                                                                 var state;
   4538                                                                 var ender;
   4539                                                                 var l;
   4540                                                                 while (true) {
   4541                                                                     if ((l instanceof sc_Pair))
   4542                                                                         {
   4543                                                                             (ender = (l.car));
   4544                                                                             (ender_set = ((state = (sc_states_129[j])), (state[(ender+(1))])));
   4545                                                                             if ((ender_set!== false))
   4546                                                                                 {
   4547                                                                                     (k = (ender_set[(2)]));
   4548                                                                                     while ((k>=(0))) {
   4549                                                                                         {
   4550                                                                                             if ((k>=i))
   4551                                                                                                 if (((BgL_sc_confzd2setzd2adjoinza2za2_46z00(sc_states_129, BgL_sc_statesza2_128za2, k, prev, i))!== false))
   4552                                                                                                     (BgL_sc_confzd2setzd2adjoinza2za2_46z00(sc_states_129, BgL_sc_statesza2_128za2, j, ender, k));
   4553                                                                                             (k = (ender_set[(k+(5))]));
   4554                                                                                         }
   4555                                                                                     }
   4556                                                                                     return (sc_loop1_127((l.cdr)));
   4557                                                                                 }
   4558                                                                             else
   4559                                                                                 (l = (l.cdr));
   4560                                                                         }
   4561                                                                     else
   4562                                                                         return undefined;
   4563                                                                 }
   4564                                                             };
   4565                                                             (sc_loop1_127((sc_enders_26[(sc_steps_25[prev])])));
   4566                                                         }
   4567                                                     (sc_i_130 = (conf_set[(sc_i_130+(5))]));
   4568                                                 }
   4569                                             }
   4570                                             return (loop1());
   4571                                         }
   4572                                     else
   4573                                         return undefined;
   4574                                 }
   4575                             };
   4576                             (loop1());
   4577                             (--i);
   4578                         }
   4579                     }
   4580                     (optrOpnd = BgL_sc_statesza2_30za2);
   4581                     return [sc_nts_42, sc_starters_41, sc_enders_40, sc_predictors_39, sc_steps_38, sc_names_37, sc_toks_36, optrOpnd, is_parsed, BgL_sc_derivzd2treesza2_47z70, BgL_sc_nbzd2derivzd2treesza2_48za2];
   4582                 }
   4583             };
   4584         }
   4585     };
   4586     BgL_parsezd2ze3parsedzf3zc2 = function(parse, nt, i, j) {
   4587         var is_parsed;
   4588         var states;
   4589         var enders;
   4590         var nts;
   4591         return ((nts = (parse[(0)])), (enders = (parse[(2)])), (states = (parse[(7)])), (is_parsed = (parse[(8)])), (is_parsed(nt, i, j, nts, enders, states)));
   4592     };
   4593     BgL_parsezd2ze3treesz31 = function(parse, nt, i, j) {
   4594         var BgL_sc_derivzd2treesza2_132z70;
   4595         var states;
   4596         var toks;
   4597         var names;
   4598         var steps;
   4599         var enders;
   4600         var nts;
   4601         return ((nts = (parse[(0)])), (enders = (parse[(2)])), (steps = (parse[(4)])), (names = (parse[(5)])), (toks = (parse[(6)])), (states = (parse[(7)])), (BgL_sc_derivzd2treesza2_132z70 = (parse[(9)])), (BgL_sc_derivzd2treesza2_132z70(nt, i, j, nts, enders, steps, names, toks, states)));
   4602     };
   4603     BgL_parsezd2ze3nbzd2treesze3 = function(parse, nt, i, j) {
   4604         var BgL_sc_nbzd2derivzd2treesza2_133za2;
   4605         var states;
   4606         var toks;
   4607         var steps;
   4608         var enders;
   4609         var nts;
   4610         return ((nts = (parse[(0)])), (enders = (parse[(2)])), (steps = (parse[(4)])), (toks = (parse[(6)])), (states = (parse[(7)])), (BgL_sc_nbzd2derivzd2treesza2_133za2 = (parse[(10)])), (BgL_sc_nbzd2derivzd2treesza2_133za2(nt, i, j, nts, enders, steps, toks, states)));
   4611     };
   4612     test = function(k) {
   4613         var x;
   4614         var p;
   4615         return ((p = (BgL_makezd2parserzd2(const_earley, function(l) {
   4616             var sc_x_134;
   4617             var tail1134;
   4618             var L1130;
   4619             var falseHead1133;
   4620             {
   4621                 (falseHead1133 = (new sc_Pair(null, null)));
   4622                 (tail1134 = falseHead1133);
   4623                 (L1130 = l);
   4624                 while (!(L1130 === null)) {
   4625                     {
   4626                         (tail1134.cdr = (new sc_Pair(((sc_x_134 = (L1130.car)), (sc_list(sc_x_134, sc_x_134))), null)));
   4627                         (tail1134 = (tail1134.cdr));
   4628                         (L1130 = (L1130.cdr));
   4629                     }
   4630                 }
   4631                 return (falseHead1133.cdr);
   4632             }
   4633         }))), (x = (p((sc_vector2list((sc_makeVector(k, "\u1E9Ca"))))))), (sc_length((BgL_parsezd2ze3treesz31(x, "\u1E9Cs", (0), k)))));
   4634     };
   4635     BgL_earleyzd2benchmarkzd2 = function() {
   4636         var args = null;
   4637         for (var sc_tmp = arguments.length - 1; sc_tmp >= 0; sc_tmp--) {
   4638             args = sc_cons(arguments[sc_tmp], args);
   4639         }
   4640         var k;
   4641         return ((k = ((args === null)?(7):(args.car))), (BgL_runzd2benchmarkzd2("earley", (1), function() {
   4642             return (test(k));
   4643         }, function(result) {
   4644             return ((sc_display(result)), (sc_newline()), result == 132);
   4645         })));
   4646     };
   4647 }
   4648 
   4649 
   4650 /************* END OF GENERATED CODE *************/
   4651 // Invoke this function to run a benchmark.
   4652 // The first argument is a string identifying the benchmark.
   4653 // The second argument is the number of times to run the benchmark.
   4654 // The third argument is a function that runs the benchmark.
   4655 // The fourth argument is a unary function that warns if the result
   4656 // returned by the benchmark is incorrect.
   4657 //
   4658 // Example:
   4659 // RunBenchmark("new Array()",
   4660 //              1,
   4661 //              function () { new Array(1000000); }
   4662 //              function (v) {
   4663 //                return (v instanceof Array) && (v.length == 1000000);
   4664 //              });
   4665 
   4666 SC_DEFAULT_OUT = new sc_GenericOutputPort(function(s) {});
   4667 SC_ERROR_OUT = SC_DEFAULT_OUT;
   4668 
   4669 function RunBenchmark(name, count, run, warn) {
   4670   for (var n = 0; n < count; ++n) {
   4671     result = run();
   4672     if (!warn(result)) {
   4673       throw new Error("Earley or Boyer did incorrect number of rewrites");
   4674     }
   4675   }
   4676 }
   4677 
   4678 var BgL_runzd2benchmarkzd2 = RunBenchmark;
   4679 
   4680 for (var i = 0; i < 4; ++i) {
   4681   BgL_earleyzd2benchmarkzd2();
   4682   BgL_nboyerzd2benchmarkzd2();
   4683 }
   4684