0) {
if(p < BI_DB && (d = this_array[i]>>p) > 0) { m = true; r = int2char(d); }
while(i >= 0) {
if(p < k) {
d = (this_array[i]&((1<>(p+=BI_DB-k);
}
else {
d = (this_array[i]>>(p-=k))&km;
if(p <= 0) { p += BI_DB; --i; }
}
if(d > 0) m = true;
if(m) r += int2char(d);
}
}
return m?r:"0";
}
// (public) -this
function bnNegate() { var r = nbi(); BigInteger.ZERO.subTo(this,r); return r; }
// (public) |this|
function bnAbs() { return (this.s<0)?this.negate():this; }
// (public) return + if this > a, - if this < a, 0 if equal
function bnCompareTo(a) {
var this_array = this.array;
var a_array = a.array;
var r = this.s-a.s;
if(r != 0) return r;
var i = this.t;
r = i-a.t;
if(r != 0) return r;
while(--i >= 0) if((r=this_array[i]-a_array[i]) != 0) return r;
return 0;
}
// returns bit length of the integer x
function nbits(x) {
var r = 1, t;
if((t=x>>>16) != 0) { x = t; r += 16; }
if((t=x>>8) != 0) { x = t; r += 8; }
if((t=x>>4) != 0) { x = t; r += 4; }
if((t=x>>2) != 0) { x = t; r += 2; }
if((t=x>>1) != 0) { x = t; r += 1; }
return r;
}
// (public) return the number of bits in "this"
function bnBitLength() {
var this_array = this.array;
if(this.t <= 0) return 0;
return BI_DB*(this.t-1)+nbits(this_array[this.t-1]^(this.s&BI_DM));
}
// (protected) r = this << n*DB
function bnpDLShiftTo(n,r) {
var this_array = this.array;
var r_array = r.array;
var i;
for(i = this.t-1; i >= 0; --i) r_array[i+n] = this_array[i];
for(i = n-1; i >= 0; --i) r_array[i] = 0;
r.t = this.t+n;
r.s = this.s;
}
// (protected) r = this >> n*DB
function bnpDRShiftTo(n,r) {
var this_array = this.array;
var r_array = r.array;
for(var i = n; i < this.t; ++i) r_array[i-n] = this_array[i];
r.t = Math.max(this.t-n,0);
r.s = this.s;
}
// (protected) r = this << n
function bnpLShiftTo(n,r) {
var this_array = this.array;
var r_array = r.array;
var bs = n%BI_DB;
var cbs = BI_DB-bs;
var bm = (1<= 0; --i) {
r_array[i+ds+1] = (this_array[i]>>cbs)|c;
c = (this_array[i]&bm)<= 0; --i) r_array[i] = 0;
r_array[ds] = c;
r.t = this.t+ds+1;
r.s = this.s;
r.clamp();
}
// (protected) r = this >> n
function bnpRShiftTo(n,r) {
var this_array = this.array;
var r_array = r.array;
r.s = this.s;
var ds = Math.floor(n/BI_DB);
if(ds >= this.t) { r.t = 0; return; }
var bs = n%BI_DB;
var cbs = BI_DB-bs;
var bm = (1<>bs;
for(var i = ds+1; i < this.t; ++i) {
r_array[i-ds-1] |= (this_array[i]&bm)<>bs;
}
if(bs > 0) r_array[this.t-ds-1] |= (this.s&bm)<>= BI_DB;
}
if(a.t < this.t) {
c -= a.s;
while(i < this.t) {
c += this_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c += this.s;
}
else {
c += this.s;
while(i < a.t) {
c -= a_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c -= a.s;
}
r.s = (c<0)?-1:0;
if(c < -1) r_array[i++] = BI_DV+c;
else if(c > 0) r_array[i++] = c;
r.t = i;
r.clamp();
}
// (protected) r = this * a, r != this,a (HAC 14.12)
// "this" should be the larger one if appropriate.
function bnpMultiplyTo(a,r) {
var this_array = this.array;
var r_array = r.array;
var x = this.abs(), y = a.abs();
var y_array = y.array;
var i = x.t;
r.t = i+y.t;
while(--i >= 0) r_array[i] = 0;
for(i = 0; i < y.t; ++i) r_array[i+x.t] = x.am(0,y_array[i],r,i,0,x.t);
r.s = 0;
r.clamp();
if(this.s != a.s) BigInteger.ZERO.subTo(r,r);
}
// (protected) r = this^2, r != this (HAC 14.16)
function bnpSquareTo(r) {
var x = this.abs();
var x_array = x.array;
var r_array = r.array;
var i = r.t = 2*x.t;
while(--i >= 0) r_array[i] = 0;
for(i = 0; i < x.t-1; ++i) {
var c = x.am(i,x_array[i],r,2*i,0,1);
if((r_array[i+x.t]+=x.am(i+1,2*x_array[i],r,2*i+1,c,x.t-i-1)) >= BI_DV) {
r_array[i+x.t] -= BI_DV;
r_array[i+x.t+1] = 1;
}
}
if(r.t > 0) r_array[r.t-1] += x.am(i,x_array[i],r,2*i,0,1);
r.s = 0;
r.clamp();
}
// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
// r != q, this != m. q or r may be null.
function bnpDivRemTo(m,q,r) {
var pm = m.abs();
if(pm.t <= 0) return;
var pt = this.abs();
if(pt.t < pm.t) {
if(q != null) q.fromInt(0);
if(r != null) this.copyTo(r);
return;
}
if(r == null) r = nbi();
var y = nbi(), ts = this.s, ms = m.s;
var pm_array = pm.array;
var nsh = BI_DB-nbits(pm_array[pm.t-1]); // normalize modulus
if(nsh > 0) { pm.lShiftTo(nsh,y); pt.lShiftTo(nsh,r); }
else { pm.copyTo(y); pt.copyTo(r); }
var ys = y.t;
var y_array = y.array;
var y0 = y_array[ys-1];
if(y0 == 0) return;
var yt = y0*(1<1)?y_array[ys-2]>>BI_F2:0);
var d1 = BI_FV/yt, d2 = (1<= 0) {
r_array[r.t++] = 1;
r.subTo(t,r);
}
BigInteger.ONE.dlShiftTo(ys,t);
t.subTo(y,y); // "negative" y so we can replace sub with am later
while(y.t < ys) y_array[y.t++] = 0;
while(--j >= 0) {
// Estimate quotient digit
var qd = (r_array[--i]==y0)?BI_DM:Math.floor(r_array[i]*d1+(r_array[i-1]+e)*d2);
if((r_array[i]+=y.am(0,qd,r,j,0,ys)) < qd) { // Try it out
y.dlShiftTo(j,t);
r.subTo(t,r);
while(r_array[i] < --qd) r.subTo(t,r);
}
}
if(q != null) {
r.drShiftTo(ys,q);
if(ts != ms) BigInteger.ZERO.subTo(q,q);
}
r.t = ys;
r.clamp();
if(nsh > 0) r.rShiftTo(nsh,r); // Denormalize remainder
if(ts < 0) BigInteger.ZERO.subTo(r,r);
}
// (public) this mod a
function bnMod(a) {
var r = nbi();
this.abs().divRemTo(a,null,r);
if(this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r,r);
return r;
}
// Modular reduction using "classic" algorithm
function Classic(m) { this.m = m; }
function cConvert(x) {
if(x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m);
else return x;
}
function cRevert(x) { return x; }
function cReduce(x) { x.divRemTo(this.m,null,x); }
function cMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
function cSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
Classic.prototype.convert = cConvert;
Classic.prototype.revert = cRevert;
Classic.prototype.reduce = cReduce;
Classic.prototype.mulTo = cMulTo;
Classic.prototype.sqrTo = cSqrTo;
// (protected) return "-1/this % 2^DB"; useful for Mont. reduction
// justification:
// xy == 1 (mod m)
// xy = 1+km
// xy(2-xy) = (1+km)(1-km)
// x[y(2-xy)] = 1-k^2m^2
// x[y(2-xy)] == 1 (mod m^2)
// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
// should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
// JS multiply "overflows" differently from C/C++, so care is needed here.
function bnpInvDigit() {
var this_array = this.array;
if(this.t < 1) return 0;
var x = this_array[0];
if((x&1) == 0) return 0;
var y = x&3; // y == 1/x mod 2^2
y = (y*(2-(x&0xf)*y))&0xf; // y == 1/x mod 2^4
y = (y*(2-(x&0xff)*y))&0xff; // y == 1/x mod 2^8
y = (y*(2-(((x&0xffff)*y)&0xffff)))&0xffff; // y == 1/x mod 2^16
// last step - calculate inverse mod DV directly;
// assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
y = (y*(2-x*y%BI_DV))%BI_DV; // y == 1/x mod 2^dbits
// we really want the negative inverse, and -DV < y < DV
return (y>0)?BI_DV-y:-y;
}
// Montgomery reduction
function Montgomery(m) {
this.m = m;
this.mp = m.invDigit();
this.mpl = this.mp&0x7fff;
this.mph = this.mp>>15;
this.um = (1<<(BI_DB-15))-1;
this.mt2 = 2*m.t;
}
// xR mod m
function montConvert(x) {
var r = nbi();
x.abs().dlShiftTo(this.m.t,r);
r.divRemTo(this.m,null,r);
if(x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r,r);
return r;
}
// x/R mod m
function montRevert(x) {
var r = nbi();
x.copyTo(r);
this.reduce(r);
return r;
}
// x = x/R mod m (HAC 14.32)
function montReduce(x) {
var x_array = x.array;
while(x.t <= this.mt2) // pad x so am has enough room later
x_array[x.t++] = 0;
for(var i = 0; i < this.m.t; ++i) {
// faster way of calculating u0 = x[i]*mp mod DV
var j = x_array[i]&0x7fff;
var u0 = (j*this.mpl+(((j*this.mph+(x_array[i]>>15)*this.mpl)&this.um)<<15))&BI_DM;
// use am to combine the multiply-shift-add into one call
j = i+this.m.t;
x_array[j] += this.m.am(0,u0,x,i,0,this.m.t);
// propagate carry
while(x_array[j] >= BI_DV) { x_array[j] -= BI_DV; x_array[++j]++; }
}
x.clamp();
x.drShiftTo(this.m.t,x);
if(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
}
// r = "x^2/R mod m"; x != r
function montSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
// r = "xy/R mod m"; x,y != r
function montMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
Montgomery.prototype.convert = montConvert;
Montgomery.prototype.revert = montRevert;
Montgomery.prototype.reduce = montReduce;
Montgomery.prototype.mulTo = montMulTo;
Montgomery.prototype.sqrTo = montSqrTo;
// (protected) true iff this is even
function bnpIsEven() {
var this_array = this.array;
return ((this.t>0)?(this_array[0]&1):this.s) == 0;
}
// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
function bnpExp(e,z) {
if(e > 0xffffffff || e < 1) return BigInteger.ONE;
var r = nbi(), r2 = nbi(), g = z.convert(this), i = nbits(e)-1;
g.copyTo(r);
while(--i >= 0) {
z.sqrTo(r,r2);
if((e&(1< 0) z.mulTo(r2,g,r);
else { var t = r; r = r2; r2 = t; }
}
return z.revert(r);
}
// (public) this^e % m, 0 <= e < 2^32
function bnModPowInt(e,m) {
var z;
if(e < 256 || m.isEven()) z = new Classic(m); else z = new Montgomery(m);
return this.exp(e,z);
}
// protected
BigInteger.prototype.copyTo = bnpCopyTo;
BigInteger.prototype.fromInt = bnpFromInt;
BigInteger.prototype.fromString = bnpFromString;
BigInteger.prototype.clamp = bnpClamp;
BigInteger.prototype.dlShiftTo = bnpDLShiftTo;
BigInteger.prototype.drShiftTo = bnpDRShiftTo;
BigInteger.prototype.lShiftTo = bnpLShiftTo;
BigInteger.prototype.rShiftTo = bnpRShiftTo;
BigInteger.prototype.subTo = bnpSubTo;
BigInteger.prototype.multiplyTo = bnpMultiplyTo;
BigInteger.prototype.squareTo = bnpSquareTo;
BigInteger.prototype.divRemTo = bnpDivRemTo;
BigInteger.prototype.invDigit = bnpInvDigit;
BigInteger.prototype.isEven = bnpIsEven;
BigInteger.prototype.exp = bnpExp;
// public
BigInteger.prototype.toString = bnToString;
BigInteger.prototype.negate = bnNegate;
BigInteger.prototype.abs = bnAbs;
BigInteger.prototype.compareTo = bnCompareTo;
BigInteger.prototype.bitLength = bnBitLength;
BigInteger.prototype.mod = bnMod;
BigInteger.prototype.modPowInt = bnModPowInt;
// "constants"
BigInteger.ZERO = nbv(0);
BigInteger.ONE = nbv(1);
// Copyright (c) 2005 Tom Wu
// All Rights Reserved.
// See "LICENSE" for details.
// Extended JavaScript BN functions, required for RSA private ops.
// (public)
function bnClone() { var r = nbi(); this.copyTo(r); return r; }
// (public) return value as integer
function bnIntValue() {
var this_array = this.array;
if(this.s < 0) {
if(this.t == 1) return this_array[0]-BI_DV;
else if(this.t == 0) return -1;
}
else if(this.t == 1) return this_array[0];
else if(this.t == 0) return 0;
// assumes 16 < DB < 32
return ((this_array[1]&((1<<(32-BI_DB))-1))<>24;
}
// (public) return value as short (assumes DB>=16)
function bnShortValue() {
var this_array = this.array;
return (this.t==0)?this.s:(this_array[0]<<16)>>16;
}
// (protected) return x s.t. r^x < DV
function bnpChunkSize(r) { return Math.floor(Math.LN2*BI_DB/Math.log(r)); }
// (public) 0 if this == 0, 1 if this > 0
function bnSigNum() {
var this_array = this.array;
if(this.s < 0) return -1;
else if(this.t <= 0 || (this.t == 1 && this_array[0] <= 0)) return 0;
else return 1;
}
// (protected) convert to radix string
function bnpToRadix(b) {
if(b == null) b = 10;
if(this.signum() == 0 || b < 2 || b > 36) return "0";
var cs = this.chunkSize(b);
var a = Math.pow(b,cs);
var d = nbv(a), y = nbi(), z = nbi(), r = "";
this.divRemTo(d,y,z);
while(y.signum() > 0) {
r = (a+z.intValue()).toString(b).substr(1) + r;
y.divRemTo(d,y,z);
}
return z.intValue().toString(b) + r;
}
// (protected) convert from radix string
function bnpFromRadix(s,b) {
this.fromInt(0);
if(b == null) b = 10;
var cs = this.chunkSize(b);
var d = Math.pow(b,cs), mi = false, j = 0, w = 0;
for(var i = 0; i < s.length; ++i) {
var x = intAt(s,i);
if(x < 0) {
if(s.charAt(i) == "-" && this.signum() == 0) mi = true;
continue;
}
w = b*w+x;
if(++j >= cs) {
this.dMultiply(d);
this.dAddOffset(w,0);
j = 0;
w = 0;
}
}
if(j > 0) {
this.dMultiply(Math.pow(b,j));
this.dAddOffset(w,0);
}
if(mi) BigInteger.ZERO.subTo(this,this);
}
// (protected) alternate constructor
function bnpFromNumber(a,b,c) {
if("number" == typeof b) {
// new BigInteger(int,int,RNG)
if(a < 2) this.fromInt(1);
else {
this.fromNumber(a,c);
if(!this.testBit(a-1)) // force MSB set
this.bitwiseTo(BigInteger.ONE.shiftLeft(a-1),op_or,this);
if(this.isEven()) this.dAddOffset(1,0); // force odd
while(!this.isProbablePrime(b)) {
this.dAddOffset(2,0);
if(this.bitLength() > a) this.subTo(BigInteger.ONE.shiftLeft(a-1),this);
}
}
}
else {
// new BigInteger(int,RNG)
var x = new Array(), t = a&7;
x.length = (a>>3)+1;
b.nextBytes(x);
if(t > 0) x[0] &= ((1< 0) {
if(p < BI_DB && (d = this_array[i]>>p) != (this.s&BI_DM)>>p)
r[k++] = d|(this.s<<(BI_DB-p));
while(i >= 0) {
if(p < 8) {
d = (this_array[i]&((1<>(p+=BI_DB-8);
}
else {
d = (this_array[i]>>(p-=8))&0xff;
if(p <= 0) { p += BI_DB; --i; }
}
if((d&0x80) != 0) d |= -256;
if(k == 0 && (this.s&0x80) != (d&0x80)) ++k;
if(k > 0 || d != this.s) r[k++] = d;
}
}
return r;
}
function bnEquals(a) { return(this.compareTo(a)==0); }
function bnMin(a) { return(this.compareTo(a)<0)?this:a; }
function bnMax(a) { return(this.compareTo(a)>0)?this:a; }
// (protected) r = this op a (bitwise)
function bnpBitwiseTo(a,op,r) {
var this_array = this.array;
var a_array = a.array;
var r_array = r.array;
var i, f, m = Math.min(a.t,this.t);
for(i = 0; i < m; ++i) r_array[i] = op(this_array[i],a_array[i]);
if(a.t < this.t) {
f = a.s&BI_DM;
for(i = m; i < this.t; ++i) r_array[i] = op(this_array[i],f);
r.t = this.t;
}
else {
f = this.s&BI_DM;
for(i = m; i < a.t; ++i) r_array[i] = op(f,a_array[i]);
r.t = a.t;
}
r.s = op(this.s,a.s);
r.clamp();
}
// (public) this & a
function op_and(x,y) { return x&y; }
function bnAnd(a) { var r = nbi(); this.bitwiseTo(a,op_and,r); return r; }
// (public) this | a
function op_or(x,y) { return x|y; }
function bnOr(a) { var r = nbi(); this.bitwiseTo(a,op_or,r); return r; }
// (public) this ^ a
function op_xor(x,y) { return x^y; }
function bnXor(a) { var r = nbi(); this.bitwiseTo(a,op_xor,r); return r; }
// (public) this & ~a
function op_andnot(x,y) { return x&~y; }
function bnAndNot(a) { var r = nbi(); this.bitwiseTo(a,op_andnot,r); return r; }
// (public) ~this
function bnNot() {
var this_array = this.array;
var r = nbi();
var r_array = r.array;
for(var i = 0; i < this.t; ++i) r_array[i] = BI_DM&~this_array[i];
r.t = this.t;
r.s = ~this.s;
return r;
}
// (public) this << n
function bnShiftLeft(n) {
var r = nbi();
if(n < 0) this.rShiftTo(-n,r); else this.lShiftTo(n,r);
return r;
}
// (public) this >> n
function bnShiftRight(n) {
var r = nbi();
if(n < 0) this.lShiftTo(-n,r); else this.rShiftTo(n,r);
return r;
}
// return index of lowest 1-bit in x, x < 2^31
function lbit(x) {
if(x == 0) return -1;
var r = 0;
if((x&0xffff) == 0) { x >>= 16; r += 16; }
if((x&0xff) == 0) { x >>= 8; r += 8; }
if((x&0xf) == 0) { x >>= 4; r += 4; }
if((x&3) == 0) { x >>= 2; r += 2; }
if((x&1) == 0) ++r;
return r;
}
// (public) returns index of lowest 1-bit (or -1 if none)
function bnGetLowestSetBit() {
var this_array = this.array;
for(var i = 0; i < this.t; ++i)
if(this_array[i] != 0) return i*BI_DB+lbit(this_array[i]);
if(this.s < 0) return this.t*BI_DB;
return -1;
}
// return number of 1 bits in x
function cbit(x) {
var r = 0;
while(x != 0) { x &= x-1; ++r; }
return r;
}
// (public) return number of set bits
function bnBitCount() {
var r = 0, x = this.s&BI_DM;
for(var i = 0; i < this.t; ++i) r += cbit(this_array[i]^x);
return r;
}
// (public) true iff nth bit is set
function bnTestBit(n) {
var this_array = this.array;
var j = Math.floor(n/BI_DB);
if(j >= this.t) return(this.s!=0);
return((this_array[j]&(1<<(n%BI_DB)))!=0);
}
// (protected) this op (1<>= BI_DB;
}
if(a.t < this.t) {
c += a.s;
while(i < this.t) {
c += this_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c += this.s;
}
else {
c += this.s;
while(i < a.t) {
c += a_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c += a.s;
}
r.s = (c<0)?-1:0;
if(c > 0) r_array[i++] = c;
else if(c < -1) r_array[i++] = BI_DV+c;
r.t = i;
r.clamp();
}
// (public) this + a
function bnAdd(a) { var r = nbi(); this.addTo(a,r); return r; }
// (public) this - a
function bnSubtract(a) { var r = nbi(); this.subTo(a,r); return r; }
// (public) this * a
function bnMultiply(a) { var r = nbi(); this.multiplyTo(a,r); return r; }
// (public) this / a
function bnDivide(a) { var r = nbi(); this.divRemTo(a,r,null); return r; }
// (public) this % a
function bnRemainder(a) { var r = nbi(); this.divRemTo(a,null,r); return r; }
// (public) [this/a,this%a]
function bnDivideAndRemainder(a) {
var q = nbi(), r = nbi();
this.divRemTo(a,q,r);
return new Array(q,r);
}
// (protected) this *= n, this >= 0, 1 < n < DV
function bnpDMultiply(n) {
var this_array = this.array;
this_array[this.t] = this.am(0,n-1,this,0,0,this.t);
++this.t;
this.clamp();
}
// (protected) this += n << w words, this >= 0
function bnpDAddOffset(n,w) {
var this_array = this.array;
while(this.t <= w) this_array[this.t++] = 0;
this_array[w] += n;
while(this_array[w] >= BI_DV) {
this_array[w] -= BI_DV;
if(++w >= this.t) this_array[this.t++] = 0;
++this_array[w];
}
}
// A "null" reducer
function NullExp() {}
function nNop(x) { return x; }
function nMulTo(x,y,r) { x.multiplyTo(y,r); }
function nSqrTo(x,r) { x.squareTo(r); }
NullExp.prototype.convert = nNop;
NullExp.prototype.revert = nNop;
NullExp.prototype.mulTo = nMulTo;
NullExp.prototype.sqrTo = nSqrTo;
// (public) this^e
function bnPow(e) { return this.exp(e,new NullExp()); }
// (protected) r = lower n words of "this * a", a.t <= n
// "this" should be the larger one if appropriate.
function bnpMultiplyLowerTo(a,n,r) {
var r_array = r.array;
var a_array = a.array;
var i = Math.min(this.t+a.t,n);
r.s = 0; // assumes a,this >= 0
r.t = i;
while(i > 0) r_array[--i] = 0;
var j;
for(j = r.t-this.t; i < j; ++i) r_array[i+this.t] = this.am(0,a_array[i],r,i,0,this.t);
for(j = Math.min(a.t,n); i < j; ++i) this.am(0,a_array[i],r,i,0,n-i);
r.clamp();
}
// (protected) r = "this * a" without lower n words, n > 0
// "this" should be the larger one if appropriate.
function bnpMultiplyUpperTo(a,n,r) {
var r_array = r.array;
var a_array = a.array;
--n;
var i = r.t = this.t+a.t-n;
r.s = 0; // assumes a,this >= 0
while(--i >= 0) r_array[i] = 0;
for(i = Math.max(n-this.t,0); i < a.t; ++i)
r_array[this.t+i-n] = this.am(n-i,a_array[i],r,0,0,this.t+i-n);
r.clamp();
r.drShiftTo(1,r);
}
// Barrett modular reduction
function Barrett(m) {
// setup Barrett
this.r2 = nbi();
this.q3 = nbi();
BigInteger.ONE.dlShiftTo(2*m.t,this.r2);
this.mu = this.r2.divide(m);
this.m = m;
}
function barrettConvert(x) {
if(x.s < 0 || x.t > 2*this.m.t) return x.mod(this.m);
else if(x.compareTo(this.m) < 0) return x;
else { var r = nbi(); x.copyTo(r); this.reduce(r); return r; }
}
function barrettRevert(x) { return x; }
// x = x mod m (HAC 14.42)
function barrettReduce(x) {
x.drShiftTo(this.m.t-1,this.r2);
if(x.t > this.m.t+1) { x.t = this.m.t+1; x.clamp(); }
this.mu.multiplyUpperTo(this.r2,this.m.t+1,this.q3);
this.m.multiplyLowerTo(this.q3,this.m.t+1,this.r2);
while(x.compareTo(this.r2) < 0) x.dAddOffset(1,this.m.t+1);
x.subTo(this.r2,x);
while(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
}
// r = x^2 mod m; x != r
function barrettSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
// r = x*y mod m; x,y != r
function barrettMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
Barrett.prototype.convert = barrettConvert;
Barrett.prototype.revert = barrettRevert;
Barrett.prototype.reduce = barrettReduce;
Barrett.prototype.mulTo = barrettMulTo;
Barrett.prototype.sqrTo = barrettSqrTo;
// (public) this^e % m (HAC 14.85)
function bnModPow(e,m) {
var e_array = e.array;
var i = e.bitLength(), k, r = nbv(1), z;
if(i <= 0) return r;
else if(i < 18) k = 1;
else if(i < 48) k = 3;
else if(i < 144) k = 4;
else if(i < 768) k = 5;
else k = 6;
if(i < 8)
z = new Classic(m);
else if(m.isEven())
z = new Barrett(m);
else
z = new Montgomery(m);
// precomputation
var g = new Array(), n = 3, k1 = k-1, km = (1< 1) {
var g2 = nbi();
z.sqrTo(g[1],g2);
while(n <= km) {
g[n] = nbi();
z.mulTo(g2,g[n-2],g[n]);
n += 2;
}
}
var j = e.t-1, w, is1 = true, r2 = nbi(), t;
i = nbits(e_array[j])-1;
while(j >= 0) {
if(i >= k1) w = (e_array[j]>>(i-k1))&km;
else {
w = (e_array[j]&((1<<(i+1))-1))<<(k1-i);
if(j > 0) w |= e_array[j-1]>>(BI_DB+i-k1);
}
n = k;
while((w&1) == 0) { w >>= 1; --n; }
if((i -= n) < 0) { i += BI_DB; --j; }
if(is1) { // ret == 1, don't bother squaring or multiplying it
g[w].copyTo(r);
is1 = false;
}
else {
while(n > 1) { z.sqrTo(r,r2); z.sqrTo(r2,r); n -= 2; }
if(n > 0) z.sqrTo(r,r2); else { t = r; r = r2; r2 = t; }
z.mulTo(r2,g[w],r);
}
while(j >= 0 && (e_array[j]&(1< 0) {
x.rShiftTo(g,x);
y.rShiftTo(g,y);
}
while(x.signum() > 0) {
if((i = x.getLowestSetBit()) > 0) x.rShiftTo(i,x);
if((i = y.getLowestSetBit()) > 0) y.rShiftTo(i,y);
if(x.compareTo(y) >= 0) {
x.subTo(y,x);
x.rShiftTo(1,x);
}
else {
y.subTo(x,y);
y.rShiftTo(1,y);
}
}
if(g > 0) y.lShiftTo(g,y);
return y;
}
// (protected) this % n, n < 2^26
function bnpModInt(n) {
var this_array = this.array;
if(n <= 0) return 0;
var d = BI_DV%n, r = (this.s<0)?n-1:0;
if(this.t > 0)
if(d == 0) r = this_array[0]%n;
else for(var i = this.t-1; i >= 0; --i) r = (d*r+this_array[i])%n;
return r;
}
// (public) 1/this % m (HAC 14.61)
function bnModInverse(m) {
var ac = m.isEven();
if((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO;
var u = m.clone(), v = this.clone();
var a = nbv(1), b = nbv(0), c = nbv(0), d = nbv(1);
while(u.signum() != 0) {
while(u.isEven()) {
u.rShiftTo(1,u);
if(ac) {
if(!a.isEven() || !b.isEven()) { a.addTo(this,a); b.subTo(m,b); }
a.rShiftTo(1,a);
}
else if(!b.isEven()) b.subTo(m,b);
b.rShiftTo(1,b);
}
while(v.isEven()) {
v.rShiftTo(1,v);
if(ac) {
if(!c.isEven() || !d.isEven()) { c.addTo(this,c); d.subTo(m,d); }
c.rShiftTo(1,c);
}
else if(!d.isEven()) d.subTo(m,d);
d.rShiftTo(1,d);
}
if(u.compareTo(v) >= 0) {
u.subTo(v,u);
if(ac) a.subTo(c,a);
b.subTo(d,b);
}
else {
v.subTo(u,v);
if(ac) c.subTo(a,c);
d.subTo(b,d);
}
}
if(v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO;
if(d.compareTo(m) >= 0) return d.subtract(m);
if(d.signum() < 0) d.addTo(m,d); else return d;
if(d.signum() < 0) return d.add(m); else return d;
}
var lowprimes = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509];
var lplim = (1<<26)/lowprimes[lowprimes.length-1];
// (public) test primality with certainty >= 1-.5^t
function bnIsProbablePrime(t) {
var i, x = this.abs();
var x_array = x.array;
if(x.t == 1 && x_array[0] <= lowprimes[lowprimes.length-1]) {
for(i = 0; i < lowprimes.length; ++i)
if(x_array[0] == lowprimes[i]) return true;
return false;
}
if(x.isEven()) return false;
i = 1;
while(i < lowprimes.length) {
var m = lowprimes[i], j = i+1;
while(j < lowprimes.length && m < lplim) m *= lowprimes[j++];
m = x.modInt(m);
while(i < j) if(m%lowprimes[i++] == 0) return false;
}
return x.millerRabin(t);
}
// (protected) true if probably prime (HAC 4.24, Miller-Rabin)
function bnpMillerRabin(t) {
var n1 = this.subtract(BigInteger.ONE);
var k = n1.getLowestSetBit();
if(k <= 0) return false;
var r = n1.shiftRight(k);
t = (t+1)>>1;
if(t > lowprimes.length) t = lowprimes.length;
var a = nbi();
for(var i = 0; i < t; ++i) {
a.fromInt(lowprimes[i]);
var y = a.modPow(r,this);
if(y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
var j = 1;
while(j++ < k && y.compareTo(n1) != 0) {
y = y.modPowInt(2,this);
if(y.compareTo(BigInteger.ONE) == 0) return false;
}
if(y.compareTo(n1) != 0) return false;
}
}
return true;
}
// protected
BigInteger.prototype.chunkSize = bnpChunkSize;
BigInteger.prototype.toRadix = bnpToRadix;
BigInteger.prototype.fromRadix = bnpFromRadix;
BigInteger.prototype.fromNumber = bnpFromNumber;
BigInteger.prototype.bitwiseTo = bnpBitwiseTo;
BigInteger.prototype.changeBit = bnpChangeBit;
BigInteger.prototype.addTo = bnpAddTo;
BigInteger.prototype.dMultiply = bnpDMultiply;
BigInteger.prototype.dAddOffset = bnpDAddOffset;
BigInteger.prototype.multiplyLowerTo = bnpMultiplyLowerTo;
BigInteger.prototype.multiplyUpperTo = bnpMultiplyUpperTo;
BigInteger.prototype.modInt = bnpModInt;
BigInteger.prototype.millerRabin = bnpMillerRabin;
// public
BigInteger.prototype.clone = bnClone;
BigInteger.prototype.intValue = bnIntValue;
BigInteger.prototype.byteValue = bnByteValue;
BigInteger.prototype.shortValue = bnShortValue;
BigInteger.prototype.signum = bnSigNum;
BigInteger.prototype.toByteArray = bnToByteArray;
BigInteger.prototype.equals = bnEquals;
BigInteger.prototype.min = bnMin;
BigInteger.prototype.max = bnMax;
BigInteger.prototype.and = bnAnd;
BigInteger.prototype.or = bnOr;
BigInteger.prototype.xor = bnXor;
BigInteger.prototype.andNot = bnAndNot;
BigInteger.prototype.not = bnNot;
BigInteger.prototype.shiftLeft = bnShiftLeft;
BigInteger.prototype.shiftRight = bnShiftRight;
BigInteger.prototype.getLowestSetBit = bnGetLowestSetBit;
BigInteger.prototype.bitCount = bnBitCount;
BigInteger.prototype.testBit = bnTestBit;
BigInteger.prototype.setBit = bnSetBit;
BigInteger.prototype.clearBit = bnClearBit;
BigInteger.prototype.flipBit = bnFlipBit;
BigInteger.prototype.add = bnAdd;
BigInteger.prototype.subtract = bnSubtract;
BigInteger.prototype.multiply = bnMultiply;
BigInteger.prototype.divide = bnDivide;
BigInteger.prototype.remainder = bnRemainder;
BigInteger.prototype.divideAndRemainder = bnDivideAndRemainder;
BigInteger.prototype.modPow = bnModPow;
BigInteger.prototype.modInverse = bnModInverse;
BigInteger.prototype.pow = bnPow;
BigInteger.prototype.gcd = bnGCD;
BigInteger.prototype.isProbablePrime = bnIsProbablePrime;
// BigInteger interfaces not implemented in jsbn:
// BigInteger(int signum, byte[] magnitude)
// double doubleValue()
// float floatValue()
// int hashCode()
// long longValue()
// static BigInteger valueOf(long val)
// prng4.js - uses Arcfour as a PRNG
function Arcfour() {
this.i = 0;
this.j = 0;
this.S = new Array();
}
// Initialize arcfour context from key, an array of ints, each from [0..255]
function ARC4init(key) {
var i, j, t;
for(i = 0; i < 256; ++i)
this.S[i] = i;
j = 0;
for(i = 0; i < 256; ++i) {
j = (j + this.S[i] + key[i % key.length]) & 255;
t = this.S[i];
this.S[i] = this.S[j];
this.S[j] = t;
}
this.i = 0;
this.j = 0;
}
function ARC4next() {
var t;
this.i = (this.i + 1) & 255;
this.j = (this.j + this.S[this.i]) & 255;
t = this.S[this.i];
this.S[this.i] = this.S[this.j];
this.S[this.j] = t;
return this.S[(t + this.S[this.i]) & 255];
}
Arcfour.prototype.init = ARC4init;
Arcfour.prototype.next = ARC4next;
// Plug in your RNG constructor here
function prng_newstate() {
return new Arcfour();
}
// Pool size must be a multiple of 4 and greater than 32.
// An array of bytes the size of the pool will be passed to init()
var rng_psize = 256;
// Random number generator - requires a PRNG backend, e.g. prng4.js
// For best results, put code like
//
// in your main HTML document.
var rng_state;
var rng_pool;
var rng_pptr;
// Mix in a 32-bit integer into the pool
function rng_seed_int(x) {
rng_pool[rng_pptr++] ^= x & 255;
rng_pool[rng_pptr++] ^= (x >> 8) & 255;
rng_pool[rng_pptr++] ^= (x >> 16) & 255;
rng_pool[rng_pptr++] ^= (x >> 24) & 255;
if(rng_pptr >= rng_psize) rng_pptr -= rng_psize;
}
// Mix in the current time (w/milliseconds) into the pool
function rng_seed_time() {
rng_seed_int(new Date().getTime());
}
// Initialize the pool with junk if needed.
if(rng_pool == null) {
rng_pool = new Array();
rng_pptr = 0;
var t;
while(rng_pptr < rng_psize) { // extract some randomness from Math.random()
t = Math.floor(65536 * Math.random());
rng_pool[rng_pptr++] = t >>> 8;
rng_pool[rng_pptr++] = t & 255;
}
rng_pptr = 0;
rng_seed_time();
//rng_seed_int(window.screenX);
//rng_seed_int(window.screenY);
}
function rng_get_byte() {
if(rng_state == null) {
rng_seed_time();
rng_state = prng_newstate();
rng_state.init(rng_pool);
for(rng_pptr = 0; rng_pptr < rng_pool.length; ++rng_pptr)
rng_pool[rng_pptr] = 0;
rng_pptr = 0;
//rng_pool = null;
}
// TODO: allow reseeding after first request
return rng_state.next();
}
function rng_get_bytes(ba) {
var i;
for(i = 0; i < ba.length; ++i) ba[i] = rng_get_byte();
}
function SecureRandom() {}
SecureRandom.prototype.nextBytes = rng_get_bytes;
// Depends on jsbn.js and rng.js
// convert a (hex) string to a bignum object
function parseBigInt(str,r) {
return new BigInteger(str,r);
}
function linebrk(s,n) {
var ret = "";
var i = 0;
while(i + n < s.length) {
ret += s.substring(i,i+n) + "\n";
i += n;
}
return ret + s.substring(i,s.length);
}
function byte2Hex(b) {
if(b < 0x10)
return "0" + b.toString(16);
else
return b.toString(16);
}
// PKCS#1 (type 2, random) pad input string s to n bytes, and return a bigint
function pkcs1pad2(s,n) {
if(n < s.length + 11) {
alert("Message too long for RSA");
return null;
}
var ba = new Array();
var i = s.length - 1;
while(i >= 0 && n > 0) ba[--n] = s.charCodeAt(i--);
ba[--n] = 0;
var rng = new SecureRandom();
var x = new Array();
while(n > 2) { // random non-zero pad
x[0] = 0;
while(x[0] == 0) rng.nextBytes(x);
ba[--n] = x[0];
}
ba[--n] = 2;
ba[--n] = 0;
return new BigInteger(ba);
}
// "empty" RSA key constructor
function RSAKey() {
this.n = null;
this.e = 0;
this.d = null;
this.p = null;
this.q = null;
this.dmp1 = null;
this.dmq1 = null;
this.coeff = null;
}
// Set the public key fields N and e from hex strings
function RSASetPublic(N,E) {
if(N != null && E != null && N.length > 0 && E.length > 0) {
this.n = parseBigInt(N,16);
this.e = parseInt(E,16);
}
else
alert("Invalid RSA public key");
}
// Perform raw public operation on "x": return x^e (mod n)
function RSADoPublic(x) {
return x.modPowInt(this.e, this.n);
}
// Return the PKCS#1 RSA encryption of "text" as an even-length hex string
function RSAEncrypt(text) {
var m = pkcs1pad2(text,(this.n.bitLength()+7)>>3);
if(m == null) return null;
var c = this.doPublic(m);
if(c == null) return null;
var h = c.toString(16);
if((h.length & 1) == 0) return h; else return "0" + h;
}
// Return the PKCS#1 RSA encryption of "text" as a Base64-encoded string
//function RSAEncryptB64(text) {
// var h = this.encrypt(text);
// if(h) return hex2b64(h); else return null;
//}
// protected
RSAKey.prototype.doPublic = RSADoPublic;
// public
RSAKey.prototype.setPublic = RSASetPublic;
RSAKey.prototype.encrypt = RSAEncrypt;
//RSAKey.prototype.encrypt_b64 = RSAEncryptB64;
// Depends on rsa.js and jsbn2.js
// Undo PKCS#1 (type 2, random) padding and, if valid, return the plaintext
function pkcs1unpad2(d,n) {
var b = d.toByteArray();
var i = 0;
while(i < b.length && b[i] == 0) ++i;
if(b.length-i != n-1 || b[i] != 2)
return null;
++i;
while(b[i] != 0)
if(++i >= b.length) return null;
var ret = "";
while(++i < b.length)
ret += String.fromCharCode(b[i]);
return ret;
}
// Set the private key fields N, e, and d from hex strings
function RSASetPrivate(N,E,D) {
if(N != null && E != null && N.length > 0 && E.length > 0) {
this.n = parseBigInt(N,16);
this.e = parseInt(E,16);
this.d = parseBigInt(D,16);
}
else
alert("Invalid RSA private key");
}
// Set the private key fields N, e, d and CRT params from hex strings
function RSASetPrivateEx(N,E,D,P,Q,DP,DQ,C) {
if(N != null && E != null && N.length > 0 && E.length > 0) {
this.n = parseBigInt(N,16);
this.e = parseInt(E,16);
this.d = parseBigInt(D,16);
this.p = parseBigInt(P,16);
this.q = parseBigInt(Q,16);
this.dmp1 = parseBigInt(DP,16);
this.dmq1 = parseBigInt(DQ,16);
this.coeff = parseBigInt(C,16);
}
else
alert("Invalid RSA private key");
}
// Generate a new random private key B bits long, using public expt E
function RSAGenerate(B,E) {
var rng = new SecureRandom();
var qs = B>>1;
this.e = parseInt(E,16);
var ee = new BigInteger(E,16);
for(;;) {
for(;;) {
this.p = new BigInteger(B-qs,1,rng);
if(this.p.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 && this.p.isProbablePrime(10)) break;
}
for(;;) {
this.q = new BigInteger(qs,1,rng);
if(this.q.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 && this.q.isProbablePrime(10)) break;
}
if(this.p.compareTo(this.q) <= 0) {
var t = this.p;
this.p = this.q;
this.q = t;
}
var p1 = this.p.subtract(BigInteger.ONE);
var q1 = this.q.subtract(BigInteger.ONE);
var phi = p1.multiply(q1);
if(phi.gcd(ee).compareTo(BigInteger.ONE) == 0) {
this.n = this.p.multiply(this.q);
this.d = ee.modInverse(phi);
this.dmp1 = this.d.mod(p1);
this.dmq1 = this.d.mod(q1);
this.coeff = this.q.modInverse(this.p);
break;
}
}
}
// Perform raw private operation on "x": return x^d (mod n)
function RSADoPrivate(x) {
if(this.p == null || this.q == null)
return x.modPow(this.d, this.n);
// TODO: re-calculate any missing CRT params
var xp = x.mod(this.p).modPow(this.dmp1, this.p);
var xq = x.mod(this.q).modPow(this.dmq1, this.q);
while(xp.compareTo(xq) < 0)
xp = xp.add(this.p);
return xp.subtract(xq).multiply(this.coeff).mod(this.p).multiply(this.q).add(xq);
}
// Return the PKCS#1 RSA decryption of "ctext".
// "ctext" is an even-length hex string and the output is a plain string.
function RSADecrypt(ctext) {
var c = parseBigInt(ctext, 16);
var m = this.doPrivate(c);
if(m == null) return null;
return pkcs1unpad2(m, (this.n.bitLength()+7)>>3);
}
// Return the PKCS#1 RSA decryption of "ctext".
// "ctext" is a Base64-encoded string and the output is a plain string.
//function RSAB64Decrypt(ctext) {
// var h = b64tohex(ctext);
// if(h) return this.decrypt(h); else return null;
//}
// protected
RSAKey.prototype.doPrivate = RSADoPrivate;
// public
RSAKey.prototype.setPrivate = RSASetPrivate;
RSAKey.prototype.setPrivateEx = RSASetPrivateEx;
RSAKey.prototype.generate = RSAGenerate;
RSAKey.prototype.decrypt = RSADecrypt;
//RSAKey.prototype.b64_decrypt = RSAB64Decrypt;
nValue="a5261939975948bb7a58dffe5ff54e65f0498f9175f5a09288810b8975871e99af3b5dd94057b0fc07535f5f97444504fa35169d461d0d30cf0192e307727c065168c788771c561a9400fb49175e9e6aa4e23fe11af69e9412dd23b0cb6684c4c2429bce139e848ab26d0829073351f4acd36074eafd036a5eb83359d2a698d3";
eValue="10001";
dValue="8e9912f6d3645894e8d38cb58c0db81ff516cf4c7e5a14c7f1eddb1459d2cded4d8d293fc97aee6aefb861859c8b6a3d1dfe710463e1f9ddc72048c09751971c4a580aa51eb523357a3cc48d31cfad1d4a165066ed92d4748fb6571211da5cb14bc11b6e2df7c1a559e6d5ac1cd5c94703a22891464fba23d0d965086277a161";
pValue="d090ce58a92c75233a6486cb0a9209bf3583b64f540c76f5294bb97d285eed33aec220bde14b2417951178ac152ceab6da7090905b478195498b352048f15e7d";
qValue="cab575dc652bb66df15a0359609d51d1db184750c00c6698b90ef3465c99655103edbf0d54c56aec0ce3c4d22592338092a126a0cc49f65a4a30d222b411e58f";
dmp1Value="1a24bca8e273df2f0e47c199bbf678604e7df7215480c77c8db39f49b000ce2cf7500038acfff5433b7d582a01f1826e6f4d42e1c57f5e1fef7b12aabc59fd25";
dmq1Value="3d06982efbbe47339e1f6d36b1216b8a741d410b0c662f54f7118b27b9a4ec9d914337eb39841d8666f3034408cf94f5b62f11c402fc994fe15a05493150d9fd";
coeffValue="3a3e731acd8960b7ff9eb81a7ff93bd1cfa74cbd56987db58b4594fb09c09084db1734c8143f98b602b981aaa9243ca28deb69b5b280ee8dcee0fd2625e53250";
setupEngine(am3, 28);
var RSA = new RSAKey();
var TEXT = "The quick brown fox jumped over the extremely lazy frogs!";
RSA.setPublic(nValue, eValue);
RSA.setPrivateEx(nValue, eValue, dValue, pValue, qValue, dmp1Value, dmq1Value, coeffValue);
function encrypt() {
return RSA.encrypt(TEXT);
}
function decrypt() {
return RSA.decrypt(TEXT);
}
for (var i = 0; i < 8; ++i) {
encrypt();
decrypt();
}
// Copyright 2008 Google Inc. All Rights Reserved.
// Copyright 1996 John Maloney and Mario Wolczko.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// This implementation of the DeltaBlue benchmark is derived
// from the Smalltalk implementation by John Maloney and Mario
// Wolczko. Some parts have been translated directly, whereas
// others have been modified more aggresively to make it feel
// more like a JavaScript program.
/**
* A JavaScript implementation of the DeltaBlue constrain-solving
* algorithm, as described in:
*
* "The DeltaBlue Algorithm: An Incremental Constraint Hierarchy Solver"
* Bjorn N. Freeman-Benson and John Maloney
* January 1990 Communications of the ACM,
* also available as University of Washington TR 89-08-06.
*
* Beware: this benchmark is written in a grotesque style where
* the constraint model is built by side-effects from constructors.
* I've kept it this way to avoid deviating too much from the original
* implementation.
*/
/* --- O b j e c t M o d e l --- */
Object.prototype.inherits = function (shuper) {
function Inheriter() { }
Inheriter.prototype = shuper.prototype;
this.prototype = new Inheriter();
this.superConstructor = shuper;
}
function OrderedCollection() {
this.elms = new Array();
}
OrderedCollection.prototype.add = function (elm) {
this.elms.push(elm);
}
OrderedCollection.prototype.at = function (index) {
return this.elms[index];
}
OrderedCollection.prototype.size = function () {
return this.elms.length;
}
OrderedCollection.prototype.removeFirst = function () {
return this.elms.pop();
}
OrderedCollection.prototype.remove = function (elm) {
var index = 0, skipped = 0;
for (var i = 0; i < this.elms.length; i++) {
var value = this.elms[i];
if (value != elm) {
this.elms[index] = value;
index++;
} else {
skipped++;
}
}
for (var i = 0; i < skipped; i++)
this.elms.pop();
}
/* --- *
* S t r e n g t h
* --- */
/**
* Strengths are used to measure the relative importance of constraints.
* New strengths may be inserted in the strength hierarchy without
* disrupting current constraints. Strengths cannot be created outside
* this class, so pointer comparison can be used for value comparison.
*/
function Strength(strengthValue, name) {
this.strengthValue = strengthValue;
this.name = name;
}
Strength.stronger = function (s1, s2) {
return s1.strengthValue < s2.strengthValue;
}
Strength.weaker = function (s1, s2) {
return s1.strengthValue > s2.strengthValue;
}
Strength.weakestOf = function (s1, s2) {
return this.weaker(s1, s2) ? s1 : s2;
}
Strength.strongest = function (s1, s2) {
return this.stronger(s1, s2) ? s1 : s2;
}
Strength.prototype.nextWeaker = function () {
switch (this.strengthValue) {
case 0: return Strength.WEAKEST;
case 1: return Strength.WEAK_DEFAULT;
case 2: return Strength.NORMAL;
case 3: return Strength.STRONG_DEFAULT;
case 4: return Strength.PREFERRED;
case 5: return Strength.REQUIRED;
}
}
// Strength constants.
Strength.REQUIRED = new Strength(0, "required");
Strength.STONG_PREFERRED = new Strength(1, "strongPreferred");
Strength.PREFERRED = new Strength(2, "preferred");
Strength.STRONG_DEFAULT = new Strength(3, "strongDefault");
Strength.NORMAL = new Strength(4, "normal");
Strength.WEAK_DEFAULT = new Strength(5, "weakDefault");
Strength.WEAKEST = new Strength(6, "weakest");
/* --- *
* C o n s t r a i n t
* --- */
/**
* An abstract class representing a system-maintainable relationship
* (or "constraint") between a set of variables. A constraint supplies
* a strength instance variable; concrete subclasses provide a means
* of storing the constrained variables and other information required
* to represent a constraint.
*/
function Constraint(strength) {
this.strength = strength;
}
/**
* Activate this constraint and attempt to satisfy it.
*/
Constraint.prototype.addConstraint = function () {
this.addToGraph();
planner.incrementalAdd(this);
}
/**
* Attempt to find a way to enforce this constraint. If successful,
* record the solution, perhaps modifying the current dataflow
* graph. Answer the constraint that this constraint overrides, if
* there is one, or nil, if there isn't.
* Assume: I am not already satisfied.
*/
Constraint.prototype.satisfy = function (mark) {
this.chooseMethod(mark);
if (!this.isSatisfied()) {
if (this.strength == Strength.REQUIRED)
alert("Could not satisfy a required constraint!");
return null;
}
this.markInputs(mark);
var out = this.output();
var overridden = out.determinedBy;
if (overridden != null) overridden.markUnsatisfied();
out.determinedBy = this;
if (!planner.addPropagate(this, mark))
alert("Cycle encountered");
out.mark = mark;
return overridden;
}
Constraint.prototype.destroyConstraint = function () {
if (this.isSatisfied()) planner.incrementalRemove(this);
else this.removeFromGraph();
}
/**
* Normal constraints are not input constraints. An input constraint
* is one that depends on external state, such as the mouse, the
* keybord, a clock, or some arbitraty piece of imperative code.
*/
Constraint.prototype.isInput = function () {
return false;
}
/* --- *
* U n a r y C o n s t r a i n t
* --- */
/**
* Abstract superclass for constraints having a single possible output
* variable.
*/
function UnaryConstraint(v, strength) {
UnaryConstraint.superConstructor.call(this, strength);
this.myOutput = v;
this.satisfied = false;
this.addConstraint();
}
UnaryConstraint.inherits(Constraint);
/**
* Adds this constraint to the constraint graph
*/
UnaryConstraint.prototype.addToGraph = function () {
this.myOutput.addConstraint(this);
this.satisfied = false;
}
/**
* Decides if this constraint can be satisfied and records that
* decision.
*/
UnaryConstraint.prototype.chooseMethod = function (mark) {
this.satisfied = (this.myOutput.mark != mark)
&& Strength.stronger(this.strength, this.myOutput.walkStrength);
}
/**
* Returns true if this constraint is satisfied in the current solution.
*/
UnaryConstraint.prototype.isSatisfied = function () {
return this.satisfied;
}
UnaryConstraint.prototype.markInputs = function (mark) {
// has no inputs
}
/**
* Returns the current output variable.
*/
UnaryConstraint.prototype.output = function () {
return this.myOutput;
}
/**
* Calculate the walkabout strength, the stay flag, and, if it is
* 'stay', the value for the current output of this constraint. Assume
* this constraint is satisfied.
*/
UnaryConstraint.prototype.recalculate = function () {
this.myOutput.walkStrength = this.strength;
this.myOutput.stay = !this.isInput();
if (this.myOutput.stay) this.execute(); // Stay optimization
}
/**
* Records that this constraint is unsatisfied
*/
UnaryConstraint.prototype.markUnsatisfied = function () {
this.satisfied = false;
}
UnaryConstraint.prototype.inputsKnown = function () {
return true;
}
UnaryConstraint.prototype.removeFromGraph = function () {
if (this.myOutput != null) this.myOutput.removeConstraint(this);
this.satisfied = false;
}
/* --- *
* S t a y C o n s t r a i n t
* --- */
/**
* Variables that should, with some level of preference, stay the same.
* Planners may exploit the fact that instances, if satisfied, will not
* change their output during plan execution. This is called "stay
* optimization".
*/
function StayConstraint(v, str) {
StayConstraint.superConstructor.call(this, v, str);
}
StayConstraint.inherits(UnaryConstraint);
StayConstraint.prototype.execute = function () {
// Stay constraints do nothing
}
/* --- *
* E d i t C o n s t r a i n t
* --- */
/**
* A unary input constraint used to mark a variable that the client
* wishes to change.
*/
function EditConstraint(v, str) {
EditConstraint.superConstructor.call(this, v, str);
}
EditConstraint.inherits(UnaryConstraint);
/**
* Edits indicate that a variable is to be changed by imperative code.
*/
EditConstraint.prototype.isInput = function () {
return true;
}
EditConstraint.prototype.execute = function () {
// Edit constraints do nothing
}
/* --- *
* B i n a r y C o n s t r a i n t
* --- */
var Direction = new Object();
Direction.NONE = 0;
Direction.FORWARD = 1;
Direction.BACKWARD = -1;
/**
* Abstract superclass for constraints having two possible output
* variables.
*/
function BinaryConstraint(var1, var2, strength) {
BinaryConstraint.superConstructor.call(this, strength);
this.v1 = var1;
this.v2 = var2;
this.direction = Direction.NONE;
this.addConstraint();
}
BinaryConstraint.inherits(Constraint);
/**
* Decides if this constratint can be satisfied and which way it
* should flow based on the relative strength of the variables related,
* and record that decision.
*/
BinaryConstraint.prototype.chooseMethod = function (mark) {
if (this.v1.mark == mark) {
this.direction = (this.v1.mark != mark && Strength.stronger(this.strength, this.v2.walkStrength))
? Direction.FORWARD
: Direction.NONE;
}
if (this.v2.mark == mark) {
this.direction = (this.v1.mark != mark && Strength.stronger(this.strength, this.v1.walkStrength))
? Direction.BACKWARD
: Direction.NONE;
}
if (Strength.weaker(this.v1.walkStrength, this.v2.walkStrength)) {
this.direction = Strength.stronger(this.strength, this.v1.walkStrength)
? Direction.BACKWARD
: Direction.NONE;
} else {
this.direction = Strength.stronger(this.strength, this.v2.walkStrength)
? Direction.FORWARD
: Direction.BACKWARD
}
}
/**
* Add this constraint to the constraint graph
*/
BinaryConstraint.prototype.addToGraph = function () {
this.v1.addConstraint(this);
this.v2.addConstraint(this);
this.direction = Direction.NONE;
}
/**
* Answer true if this constraint is satisfied in the current solution.
*/
BinaryConstraint.prototype.isSatisfied = function () {
return this.direction != Direction.NONE;
}
/**
* Mark the input variable with the given mark.
*/
BinaryConstraint.prototype.markInputs = function (mark) {
this.input().mark = mark;
}
/**
* Returns the current input variable
*/
BinaryConstraint.prototype.input = function () {
return (this.direction == Direction.FORWARD) ? this.v1 : this.v2;
}
/**
* Returns the current output variable
*/
BinaryConstraint.prototype.output = function () {
return (this.direction == Direction.FORWARD) ? this.v2 : this.v1;
}
/**
* Calculate the walkabout strength, the stay flag, and, if it is
* 'stay', the value for the current output of this
* constraint. Assume this constraint is satisfied.
*/
BinaryConstraint.prototype.recalculate = function () {
var ihn = this.input(), out = this.output();
out.walkStrength = Strength.weakestOf(this.strength, ihn.walkStrength);
out.stay = ihn.stay;
if (out.stay) this.execute();
}
/**
* Record the fact that this constraint is unsatisfied.
*/
BinaryConstraint.prototype.markUnsatisfied = function () {
this.direction = Direction.NONE;
}
BinaryConstraint.prototype.inputsKnown = function (mark) {
var i = this.input();
return i.mark == mark || i.stay || i.determinedBy == null;
}
BinaryConstraint.prototype.removeFromGraph = function () {
if (this.v1 != null) this.v1.removeConstraint(this);
if (this.v2 != null) this.v2.removeConstraint(this);
this.direction = Direction.NONE;
}
/* --- *
* S c a l e C o n s t r a i n t
* --- */
/**
* Relates two variables by the linear scaling relationship: "v2 =
* (v1 * scale) + offset". Either v1 or v2 may be changed to maintain
* this relationship but the scale factor and offset are considered
* read-only.
*/
function ScaleConstraint(src, scale, offset, dest, strength) {
this.direction = Direction.NONE;
this.scale = scale;
this.offset = offset;
ScaleConstraint.superConstructor.call(this, src, dest, strength);
}
ScaleConstraint.inherits(BinaryConstraint);
/**
* Adds this constraint to the constraint graph.
*/
ScaleConstraint.prototype.addToGraph = function () {
ScaleConstraint.superConstructor.prototype.addToGraph.call(this);
this.scale.addConstraint(this);
this.offset.addConstraint(this);
}
ScaleConstraint.prototype.removeFromGraph = function () {
ScaleConstraint.superConstructor.prototype.removeFromGraph.call(this);
if (this.scale != null) this.scale.removeConstraint(this);
if (this.offset != null) this.offset.removeConstraint(this);
}
ScaleConstraint.prototype.markInputs = function (mark) {
ScaleConstraint.superConstructor.prototype.markInputs.call(this, mark);
this.scale.mark = this.offset.mark = mark;
}
/**
* Enforce this constraint. Assume that it is satisfied.
*/
ScaleConstraint.prototype.execute = function () {
if (this.direction == Direction.FORWARD) {
this.v2.value = this.v1.value * this.scale.value + this.offset.value;
} else {
this.v1.value = (this.v2.value - this.offset.value) / this.scale.value;
}
}
/**
* Calculate the walkabout strength, the stay flag, and, if it is
* 'stay', the value for the current output of this constraint. Assume
* this constraint is satisfied.
*/
ScaleConstraint.prototype.recalculate = function () {
var ihn = this.input(), out = this.output();
out.walkStrength = Strength.weakestOf(this.strength, ihn.walkStrength);
out.stay = ihn.stay && this.scale.stay && this.offset.stay;
if (out.stay) this.execute();
}
/* --- *
* E q u a l i t y C o n s t r a i n t
* --- */
/**
* Constrains two variables to have the same value.
*/
function EqualityConstraint(var1, var2, strength) {
EqualityConstraint.superConstructor.call(this, var1, var2, strength);
}
EqualityConstraint.inherits(BinaryConstraint);
/**
* Enforce this constraint. Assume that it is satisfied.
*/
EqualityConstraint.prototype.execute = function () {
this.output().value = this.input().value;
}
/* --- *
* V a r i a b l e
* --- */
/**
* A constrained variable. In addition to its value, it maintain the
* structure of the constraint graph, the current dataflow graph, and
* various parameters of interest to the DeltaBlue incremental
* constraint solver.
**/
function Variable(name, initialValue) {
this.value = initialValue || 0;
this.constraints = new OrderedCollection();
this.determinedBy = null;
this.mark = 0;
this.walkStrength = Strength.WEAKEST;
this.stay = true;
this.name = name;
}
/**
* Add the given constraint to the set of all constraints that refer
* this variable.
*/
Variable.prototype.addConstraint = function (c) {
this.constraints.add(c);
}
/**
* Removes all traces of c from this variable.
*/
Variable.prototype.removeConstraint = function (c) {
this.constraints.remove(c);
if (this.determinedBy == c) this.determinedBy = null;
}
/* --- *
* P l a n n e r
* --- */
/**
* The DeltaBlue planner
*/
function Planner() {
this.currentMark = 0;
}
/**
* Attempt to satisfy the given constraint and, if successful,
* incrementally update the dataflow graph. Details: If satifying
* the constraint is successful, it may override a weaker constraint
* on its output. The algorithm attempts to resatisfy that
* constraint using some other method. This process is repeated
* until either a) it reaches a variable that was not previously
* determined by any constraint or b) it reaches a constraint that
* is too weak to be satisfied using any of its methods. The
* variables of constraints that have been processed are marked with
* a unique mark value so that we know where we've been. This allows
* the algorithm to avoid getting into an infinite loop even if the
* constraint graph has an inadvertent cycle.
*/
Planner.prototype.incrementalAdd = function (c) {
var mark = this.newMark();
var overridden = c.satisfy(mark);
while (overridden != null)
overridden = overridden.satisfy(mark);
}
/**
* Entry point for retracting a constraint. Remove the given
* constraint and incrementally update the dataflow graph.
* Details: Retracting the given constraint may allow some currently
* unsatisfiable downstream constraint to be satisfied. We therefore collect
* a list of unsatisfied downstream constraints and attempt to
* satisfy each one in turn. This list is traversed by constraint
* strength, strongest first, as a heuristic for avoiding
* unnecessarily adding and then overriding weak constraints.
* Assume: c is satisfied.
*/
Planner.prototype.incrementalRemove = function (c) {
var out = c.output();
c.markUnsatisfied();
c.removeFromGraph();
var unsatisfied = this.removePropagateFrom(out);
var strength = Strength.REQUIRED;
do {
for (var i = 0; i < unsatisfied.size(); i++) {
var u = unsatisfied.at(i);
if (u.strength == strength)
this.incrementalAdd(u);
}
strength = strength.nextWeaker();
} while (strength != Strength.WEAKEST);
}
/**
* Select a previously unused mark value.
*/
Planner.prototype.newMark = function () {
return ++this.currentMark;
}
/**
* Extract a plan for resatisfaction starting from the given source
* constraints, usually a set of input constraints. This method
* assumes that stay optimization is desired; the plan will contain
* only constraints whose output variables are not stay. Constraints
* that do no computation, such as stay and edit constraints, are
* not included in the plan.
* Details: The outputs of a constraint are marked when it is added
* to the plan under construction. A constraint may be appended to
* the plan when all its input variables are known. A variable is
* known if either a) the variable is marked (indicating that has
* been computed by a constraint appearing earlier in the plan), b)
* the variable is 'stay' (i.e. it is a constant at plan execution
* time), or c) the variable is not determined by any
* constraint. The last provision is for past states of history
* variables, which are not stay but which are also not computed by
* any constraint.
* Assume: sources are all satisfied.
*/
Planner.prototype.makePlan = function (sources) {
var mark = this.newMark();
var plan = new Plan();
var todo = sources;
while (todo.size() > 0) {
var c = todo.removeFirst();
if (c.output().mark != mark && c.inputsKnown(mark)) {
plan.addConstraint(c);
c.output().mark = mark;
this.addConstraintsConsumingTo(c.output(), todo);
}
}
return plan;
}
/**
* Extract a plan for resatisfying starting from the output of the
* given constraints, usually a set of input constraints.
*/
Planner.prototype.extractPlanFromConstraints = function (constraints) {
var sources = new OrderedCollection();
for (var i = 0; i < constraints.size(); i++) {
var c = constraints.at(i);
if (c.isInput() && c.isSatisfied())
// not in plan already and eligible for inclusion
sources.add(c);
}
return this.makePlan(sources);
}
/**
* Recompute the walkabout strengths and stay flags of all variables
* downstream of the given constraint and recompute the actual
* values of all variables whose stay flag is true. If a cycle is
* detected, remove the given constraint and answer
* false. Otherwise, answer true.
* Details: Cycles are detected when a marked variable is
* encountered downstream of the given constraint. The sender is
* assumed to have marked the inputs of the given constraint with
* the given mark. Thus, encountering a marked node downstream of
* the output constraint means that there is a path from the
* constraint's output to one of its inputs.
*/
Planner.prototype.addPropagate = function (c, mark) {
var todo = new OrderedCollection();
todo.add(c);
while (todo.size() > 0) {
var d = todo.removeFirst();
if (d.output().mark == mark) {
this.incrementalRemove(c);
return false;
}
d.recalculate();
this.addConstraintsConsumingTo(d.output(), todo);
}
return true;
}
/**
* Update the walkabout strengths and stay flags of all variables
* downstream of the given constraint. Answer a collection of
* unsatisfied constraints sorted in order of decreasing strength.
*/
Planner.prototype.removePropagateFrom = function (out) {
out.determinedBy = null;
out.walkStrength = Strength.WEAKEST;
out.stay = true;
var unsatisfied = new OrderedCollection();
var todo = new OrderedCollection();
todo.add(out);
while (todo.size() > 0) {
var v = todo.removeFirst();
for (var i = 0; i < v.constraints.size(); i++) {
var c = v.constraints.at(i);
if (!c.isSatisfied())
unsatisfied.add(c);
}
var determining = v.determinedBy;
for (var i = 0; i < v.constraints.size(); i++) {
var next = v.constraints.at(i);
if (next != determining && next.isSatisfied()) {
next.recalculate();
todo.add(next.output());
}
}
}
return unsatisfied;
}
Planner.prototype.addConstraintsConsumingTo = function (v, coll) {
var determining = v.determinedBy;
var cc = v.constraints;
for (var i = 0; i < cc.size(); i++) {
var c = cc.at(i);
if (c != determining && c.isSatisfied())
coll.add(c);
}
}
/* --- *
* P l a n
* --- */
/**
* A Plan is an ordered list of constraints to be executed in sequence
* to resatisfy all currently satisfiable constraints in the face of
* one or more changing inputs.
*/
function Plan() {
this.v = new OrderedCollection();
}
Plan.prototype.addConstraint = function (c) {
this.v.add(c);
}
Plan.prototype.size = function () {
return this.v.size();
}
Plan.prototype.constraintAt = function (index) {
return this.v.at(index);
}
Plan.prototype.execute = function () {
for (var i = 0; i < this.size(); i++) {
var c = this.constraintAt(i);
c.execute();
}
}
/* --- *
* M a i n
* --- */
/**
* This is the standard DeltaBlue benchmark. A long chain of equality
* constraints is constructed with a stay constraint on one end. An
* edit constraint is then added to the opposite end and the time is
* measured for adding and removing this constraint, and extracting
* and executing a constraint satisfaction plan. There are two cases.
* In case 1, the added constraint is stronger than the stay
* constraint and values must propagate down the entire length of the
* chain. In case 2, the added constraint is weaker than the stay
* constraint so it cannot be accomodated. The cost in this case is,
* of course, very low. Typical situations lie somewhere between these
* two extremes.
*/
function chainTest(n) {
planner = new Planner();
var prev = null, first = null, last = null;
// Build chain of n equality constraints
for (var i = 0; i <= n; i++) {
var name = "v" + i;
var v = new Variable(name);
if (prev != null)
new EqualityConstraint(prev, v, Strength.REQUIRED);
if (i == 0) first = v;
if (i == n) last = v;
prev = v;
}
new StayConstraint(last, Strength.STRONG_DEFAULT);
var edit = new EditConstraint(first, Strength.PREFERRED);
var edits = new OrderedCollection();
edits.add(edit);
var plan = planner.extractPlanFromConstraints(edits);
for (var i = 0; i < 100; i++) {
first.value = i;
plan.execute();
if (last.value != i)
alert("Chain test failed.");
}
}
/**
* This test constructs a two sets of variables related to each
* other by a simple linear transformation (scale and offset). The
* time is measured to change a variable on either side of the
* mapping and to change the scale and offset factors.
*/
function projectionTest(n) {
planner = new Planner();
var scale = new Variable("scale", 10);
var offset = new Variable("offset", 1000);
var src = null, dst = null;
var dests = new OrderedCollection();
for (var i = 0; i < n; i++) {
src = new Variable("src" + i, i);
dst = new Variable("dst" + i, i);
dests.add(dst);
new StayConstraint(src, Strength.NORMAL);
new ScaleConstraint(src, scale, offset, dst, Strength.REQUIRED);
}
change(src, 17);
if (dst.value != 1170) alert("Projection 1 failed");
change(dst, 1050);
if (src.value != 5) alert("Projection 2 failed");
change(scale, 5);
for (var i = 0; i < n - 1; i++) {
if (dests.at(i).value != i * 5 + 1000)
alert("Projection 3 failed");
}
change(offset, 2000);
for (var i = 0; i < n - 1; i++) {
if (dests.at(i).value != i * 5 + 2000)
alert("Projection 4 failed");
}
}
function change(v, newValue) {
var edit = new EditConstraint(v, Strength.PREFERRED);
var edits = new OrderedCollection();
edits.add(edit);
var plan = planner.extractPlanFromConstraints(edits);
for (var i = 0; i < 10; i++) {
v.value = newValue;
plan.execute();
}
edit.destroyConstraint();
}
// Global variable holding the current planner.
var planner = null;
function deltaBlue() {
chainTest(100);
projectionTest(100);
}
for (var i = 0; i < 155; ++i)
deltaBlue();
// This file is automatically generated by scheme2js, except for the
// benchmark harness code at the beginning and end of the file.
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/************* GENERATED FILE - DO NOT EDIT *************/
/*
* To use write/prints/... the default-output port has to be set first.
* Simply setting SC_DEFAULT_OUT and SC_ERROR_OUT to the desired values
* should do the trick.
* In the following example the std-out and error-port are redirected to
* a DIV.
function initRuntime() {
function escapeHTML(s) {
var tmp = s;
tmp = tmp.replace(/&/g, "&");
tmp = tmp.replace(//g, ">");
tmp = tmp.replace(/ /g, " ");
tmp = tmp.replace(/\n/g, "
");
tmp = tmp.replace(/\t/g, "  ");
return tmp;
}
document.write("");
SC_DEFAULT_OUT = new sc_GenericOutputPort(
function(s) {
var stdout = document.getElementById('stdout');
stdout.innerHTML = stdout.innerHTML + escapeHTML(s);
});
SC_ERROR_OUT = SC_DEFAULT_OUT;
}
*/
function sc_print_debug() {
sc_print.apply(null, arguments);
}
/*** META ((export *js*)) */
var sc_JS_GLOBALS = this;
var __sc_LINE=-1;
var __sc_FILE="";
/*** META ((export #t)) */
function sc_alert() {
var len = arguments.length;
var s = "";
var i;
for( i = 0; i < len; i++ ) {
s += sc_toDisplayString(arguments[ i ]);
}
return alert( s );
}
/*** META ((export #t)) */
function sc_typeof( x ) {
return typeof x;
}
/*** META ((export #t)) */
function sc_error() {
var a = [sc_jsstring2symbol("*error*")];
for (var i = 0; i < arguments.length; i++) {
a[i+1] = arguments[i];
}
throw a;
}
/*** META ((export #t)
(peephole (prefix "throw ")))
*/
function sc_raise(obj) {
throw obj;
}
/*** META ((export with-handler-lambda)) */
function sc_withHandlerLambda(handler, body) {
try {
return body();
} catch(e) {
if (!e._internalException)
return handler(e);
else
throw e;
}
}
var sc_properties = new Object();
/*** META ((export #t)) */
function sc_putpropBang(sym, key, val) {
var ht = sc_properties[sym];
if (!ht) {
ht = new Object();
sc_properties[sym] = ht;
}
ht[key] = val;
}
/*** META ((export #t)) */
function sc_getprop(sym, key) {
var ht = sc_properties[sym];
if (ht) {
if (key in ht)
return ht[key];
else
return false;
} else
return false;
}
/*** META ((export #t)) */
function sc_rempropBang(sym, key) {
var ht = sc_properties[sym];
if (ht)
delete ht[key];
}
/*** META ((export #t)) */
function sc_any2String(o) {
return jsstring2string(sc_toDisplayString(o));
}
/*** META ((export #t)
(peephole (infix 2 2 "==="))
(type bool))
*/
function sc_isEqv(o1, o2) {
return (o1 === o2);
}
/*** META ((export #t)
(peephole (infix 2 2 "==="))
(type bool))
*/
function sc_isEq(o1, o2) {
return (o1 === o2);
}
/*** META ((export #t)
(type bool))
*/
function sc_isNumber(n) {
return (typeof n === "number");
}
/*** META ((export #t)
(type bool))
*/
function sc_isComplex(n) {
return sc_isNumber(n);
}
/*** META ((export #t)
(type bool))
*/
function sc_isReal(n) {
return sc_isNumber(n);
}
/*** META ((export #t)
(type bool))
*/
function sc_isRational(n) {
return sc_isReal(n);
}
/*** META ((export #t)
(type bool))
*/
function sc_isInteger(n) {
return (parseInt(n) === n);
}
/*** META ((export #t)
(type bool)
(peephole (postfix ", false")))
*/
// we don't have exact numbers...
function sc_isExact(n) {
return false;
}
/*** META ((export #t)
(peephole (postfix ", true"))
(type bool))
*/
function sc_isInexact(n) {
return true;
}
/*** META ((export = =fx =fl)
(type bool)
(peephole (infix 2 2 "===")))
*/
function sc_equal(x) {
for (var i = 1; i < arguments.length; i++)
if (x !== arguments[i])
return false;
return true;
}
/*** META ((export < = arguments[i])
return false;
x = arguments[i];
}
return true;
}
/*** META ((export > >fx >fl)
(type bool)
(peephole (infix 2 2 ">")))
*/
function sc_greater(x, y) {
for (var i = 1; i < arguments.length; i++) {
if (x <= arguments[i])
return false;
x = arguments[i];
}
return true;
}
/*** META ((export <= <=fx <=fl)
(type bool)
(peephole (infix 2 2 "<=")))
*/
function sc_lessEqual(x, y) {
for (var i = 1; i < arguments.length; i++) {
if (x > arguments[i])
return false;
x = arguments[i];
}
return true;
}
/*** META ((export >= >=fl >=fx)
(type bool)
(peephole (infix 2 2 ">=")))
*/
function sc_greaterEqual(x, y) {
for (var i = 1; i < arguments.length; i++) {
if (x < arguments[i])
return false;
x = arguments[i];
}
return true;
}
/*** META ((export #t)
(type bool)
(peephole (postfix "=== 0")))
*/
function sc_isZero(x) {
return (x === 0);
}
/*** META ((export #t)
(type bool)
(peephole (postfix "> 0")))
*/
function sc_isPositive(x) {
return (x > 0);
}
/*** META ((export #t)
(type bool)
(peephole (postfix "< 0")))
*/
function sc_isNegative(x) {
return (x < 0);
}
/*** META ((export #t)
(type bool)
(peephole (postfix "%2===1")))
*/
function sc_isOdd(x) {
return (x % 2 === 1);
}
/*** META ((export #t)
(type bool)
(peephole (postfix "%2===0")))
*/
function sc_isEven(x) {
return (x % 2 === 0);
}
/*** META ((export #t)) */
var sc_max = Math.max;
/*** META ((export #t)) */
var sc_min = Math.min;
/*** META ((export + +fx +fl)
(peephole (infix 0 #f "+" "0")))
*/
function sc_plus() {
var sum = 0;
for (var i = 0; i < arguments.length; i++)
sum += arguments[i];
return sum;
}
/*** META ((export * *fx *fl)
(peephole (infix 0 #f "*" "1")))
*/
function sc_multi() {
var product = 1;
for (var i = 0; i < arguments.length; i++)
product *= arguments[i];
return product;
}
/*** META ((export - -fx -fl)
(peephole (minus)))
*/
function sc_minus(x) {
if (arguments.length === 1)
return -x;
else {
var res = x;
for (var i = 1; i < arguments.length; i++)
res -= arguments[i];
return res;
}
}
/*** META ((export / /fl)
(peephole (div)))
*/
function sc_div(x) {
if (arguments.length === 1)
return 1/x;
else {
var res = x;
for (var i = 1; i < arguments.length; i++)
res /= arguments[i];
return res;
}
}
/*** META ((export #t)) */
var sc_abs = Math.abs;
/*** META ((export quotient /fx)
(peephole (hole 2 "parseInt(" x "/" y ")")))
*/
function sc_quotient(x, y) {
return parseInt(x / y);
}
/*** META ((export #t)
(peephole (infix 2 2 "%")))
*/
function sc_remainder(x, y) {
return x % y;
}
/*** META ((export #t)
(peephole (modulo)))
*/
function sc_modulo(x, y) {
var remainder = x % y;
// if they don't have the same sign
if ((remainder * y) < 0)
return remainder + y;
else
return remainder;
}
function sc_euclid_gcd(a, b) {
var temp;
if (a === 0) return b;
if (b === 0) return a;
if (a < 0) {a = -a;};
if (b < 0) {b = -b;};
if (b > a) {temp = a; a = b; b = temp;};
while (true) {
a %= b;
if(a === 0) {return b;};
b %= a;
if(b === 0) {return a;};
};
return b;
}
/*** META ((export #t)) */
function sc_gcd() {
var gcd = 0;
for (var i = 0; i < arguments.length; i++)
gcd = sc_euclid_gcd(gcd, arguments[i]);
return gcd;
}
/*** META ((export #t)) */
function sc_lcm() {
var lcm = 1;
for (var i = 0; i < arguments.length; i++) {
var f = Math.round(arguments[i] / sc_euclid_gcd(arguments[i], lcm));
lcm *= Math.abs(f);
}
return lcm;
}
// LIMITATION: numerator and denominator don't make sense in floating point world.
//var SC_MAX_DECIMALS = 1000000
//
// function sc_numerator(x) {
// var rounded = Math.round(x * SC_MAX_DECIMALS);
// return Math.round(rounded / sc_euclid_gcd(rounded, SC_MAX_DECIMALS));
// }
// function sc_denominator(x) {
// var rounded = Math.round(x * SC_MAX_DECIMALS);
// return Math.round(SC_MAX_DECIMALS / sc_euclid_gcd(rounded, SC_MAX_DECIMALS));
// }
/*** META ((export #t)) */
var sc_floor = Math.floor;
/*** META ((export #t)) */
var sc_ceiling = Math.ceil;
/*** META ((export #t)) */
var sc_truncate = parseInt;
/*** META ((export #t)) */
var sc_round = Math.round;
// LIMITATION: sc_rationalize doesn't make sense in a floating point world.
/*** META ((export #t)) */
var sc_exp = Math.exp;
/*** META ((export #t)) */
var sc_log = Math.log;
/*** META ((export #t)) */
var sc_sin = Math.sin;
/*** META ((export #t)) */
var sc_cos = Math.cos;
/*** META ((export #t)) */
var sc_tan = Math.tan;
/*** META ((export #t)) */
var sc_asin = Math.asin;
/*** META ((export #t)) */
var sc_acos = Math.acos;
/*** META ((export #t)) */
var sc_atan = Math.atan;
/*** META ((export #t)) */
var sc_sqrt = Math.sqrt;
/*** META ((export #t)) */
var sc_expt = Math.pow;
// LIMITATION: we don't have complex numbers.
// LIMITATION: the following functions are hence not implemented.
// LIMITATION: make-rectangular, make-polar, real-part, imag-part, magnitude, angle
// LIMITATION: 2 argument atan
/*** META ((export #t)
(peephole (id)))
*/
function sc_exact2inexact(x) {
return x;
}
/*** META ((export #t)
(peephole (id)))
*/
function sc_inexact2exact(x) {
return x;
}
function sc_number2jsstring(x, radix) {
if (radix)
return x.toString(radix);
else
return x.toString();
}
function sc_jsstring2number(s, radix) {
if (s === "") return false;
if (radix) {
var t = parseInt(s, radix);
if (!t && t !== 0) return false;
// verify that each char is in range. (parseInt ignores leading
// white and trailing chars)
var allowedChars = "01234567890abcdefghijklmnopqrstuvwxyz".substring(0, radix+1);
if ((new RegExp("^["+allowedChars+"]*$", "i")).test(s))
return t;
else return false;
} else {
var t = +s; // does not ignore trailing chars.
if (!t && t !== 0) return false;
// simply verify that first char is not whitespace.
var c = s.charAt(0);
// if +c is 0, but the char is not "0", then we have a whitespace.
if (+c === 0 && c !== "0") return false;
return t;
}
}
/*** META ((export #t)
(type bool)
(peephole (not)))
*/
function sc_not(b) {
return b === false;
}
/*** META ((export #t)
(type bool))
*/
function sc_isBoolean(b) {
return (b === true) || (b === false);
}
function sc_Pair(car, cdr) {
this.car = car;
this.cdr = cdr;
}
sc_Pair.prototype.toString = function() {
return sc_toDisplayString(this);
};
sc_Pair.prototype.sc_toWriteOrDisplayString = function(writeOrDisplay) {
var current = this;
var res = "(";
while(true) {
res += writeOrDisplay(current.car);
if (sc_isPair(current.cdr)) {
res += " ";
current = current.cdr;
} else if (current.cdr !== null) {
res += " . " + writeOrDisplay(current.cdr);
break;
} else // current.cdr == null
break;
}
res += ")";
return res;
};
sc_Pair.prototype.sc_toDisplayString = function() {
return this.sc_toWriteOrDisplayString(sc_toDisplayString);
};
sc_Pair.prototype.sc_toWriteString = function() {
return this.sc_toWriteOrDisplayString(sc_toWriteString);
};
// sc_Pair.prototype.sc_toWriteCircleString in IO.js
/*** META ((export #t)
(type bool)
(peephole (postfix " instanceof sc_Pair")))
*/
function sc_isPair(p) {
return (p instanceof sc_Pair);
}
function sc_isPairEqual(p1, p2, comp) {
return (comp(p1.car, p2.car) && comp(p1.cdr, p2.cdr));
}
/*** META ((export #t)
(peephole (hole 2 "new sc_Pair(" car ", " cdr ")")))
*/
function sc_cons(car, cdr) {
return new sc_Pair(car, cdr);
}
/*** META ((export cons*)) */
function sc_consStar() {
var res = arguments[arguments.length - 1];
for (var i = arguments.length-2; i >= 0; i--)
res = new sc_Pair(arguments[i], res);
return res;
}
/*** META ((export #t)
(peephole (postfix ".car")))
*/
function sc_car(p) {
return p.car;
}
/*** META ((export #t)
(peephole (postfix ".cdr")))
*/
function sc_cdr(p) {
return p.cdr;
}
/*** META ((export #t)
(peephole (hole 2 p ".car = " val)))
*/
function sc_setCarBang(p, val) {
p.car = val;
}
/*** META ((export #t)
(peephole (hole 2 p ".cdr = " val)))
*/
function sc_setCdrBang(p, val) {
p.cdr = val;
}
/*** META ((export #t)
(peephole (postfix ".car.car")))
*/
function sc_caar(p) { return p.car.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.car")))
*/
function sc_cadr(p) { return p.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".car.cdr")))
*/
function sc_cdar(p) { return p.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr")))
*/
function sc_cddr(p) { return p.cdr.cdr; }
/*** META ((export #t)
(peephole (postfix ".car.car.car")))
*/
function sc_caaar(p) { return p.car.car.car; }
/*** META ((export #t)
(peephole (postfix ".car.cdr.car")))
*/
function sc_cadar(p) { return p.car.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.car.car")))
*/
function sc_caadr(p) { return p.cdr.car.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr.car")))
*/
function sc_caddr(p) { return p.cdr.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".car.car.cdr")))
*/
function sc_cdaar(p) { return p.car.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.car.cdr")))
*/
function sc_cdadr(p) { return p.cdr.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".car.cdr.cdr")))
*/
function sc_cddar(p) { return p.car.cdr.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr.cdr")))
*/
function sc_cdddr(p) { return p.cdr.cdr.cdr; }
/*** META ((export #t)
(peephole (postfix ".car.car.car.car")))
*/
function sc_caaaar(p) { return p.car.car.car.car; }
/*** META ((export #t)
(peephole (postfix ".car.cdr.car.car")))
*/
function sc_caadar(p) { return p.car.cdr.car.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.car.car.car")))
*/
function sc_caaadr(p) { return p.cdr.car.car.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr.car.car")))
*/
function sc_caaddr(p) { return p.cdr.cdr.car.car; }
/*** META ((export #t)
(peephole (postfix ".car.car.car.cdr")))
*/
function sc_cdaaar(p) { return p.car.car.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".car.cdr.car.cdr")))
*/
function sc_cdadar(p) { return p.car.cdr.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.car.car.cdr")))
*/
function sc_cdaadr(p) { return p.cdr.car.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr.car.cdr")))
*/
function sc_cdaddr(p) { return p.cdr.cdr.car.cdr; }
/*** META ((export #t)
(peephole (postfix ".car.car.cdr.car")))
*/
function sc_cadaar(p) { return p.car.car.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".car.cdr.cdr.car")))
*/
function sc_caddar(p) { return p.car.cdr.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.car.cdr.car")))
*/
function sc_cadadr(p) { return p.cdr.car.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr.cdr.car")))
*/
function sc_cadddr(p) { return p.cdr.cdr.cdr.car; }
/*** META ((export #t)
(peephole (postfix ".car.car.cdr.cdr")))
*/
function sc_cddaar(p) { return p.car.car.cdr.cdr; }
/*** META ((export #t)
(peephole (postfix ".car.cdr.cdr.cdr")))
*/
function sc_cdddar(p) { return p.car.cdr.cdr.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.car.cdr.cdr")))
*/
function sc_cddadr(p) { return p.cdr.car.cdr.cdr; }
/*** META ((export #t)
(peephole (postfix ".cdr.cdr.cdr.cdr")))
*/
function sc_cddddr(p) { return p.cdr.cdr.cdr.cdr; }
/*** META ((export #t)) */
function sc_lastPair(l) {
if (!sc_isPair(l)) sc_error("sc_lastPair: pair expected");
var res = l;
var cdr = l.cdr;
while (sc_isPair(cdr)) {
res = cdr;
cdr = res.cdr;
}
return res;
}
/*** META ((export #t)
(type bool)
(peephole (postfix " === null")))
*/
function sc_isNull(o) {
return (o === null);
}
/*** META ((export #t)
(type bool))
*/
function sc_isList(o) {
var rabbit;
var turtle;
var rabbit = o;
var turtle = o;
while (true) {
if (rabbit === null ||
(rabbit instanceof sc_Pair && rabbit.cdr === null))
return true; // end of list
else if ((rabbit instanceof sc_Pair) &&
(rabbit.cdr instanceof sc_Pair)) {
rabbit = rabbit.cdr.cdr;
turtle = turtle.cdr;
if (rabbit === turtle) return false; // cycle
} else
return false; // not pair
}
}
/*** META ((export #t)) */
function sc_list() {
var res = null;
var a = arguments;
for (var i = a.length-1; i >= 0; i--)
res = new sc_Pair(a[i], res);
return res;
}
/*** META ((export #t)) */
function sc_iota(num, init) {
var res = null;
if (!init) init = 0;
for (var i = num - 1; i >= 0; i--)
res = new sc_Pair(i + init, res);
return res;
}
/*** META ((export #t)) */
function sc_makeList(nbEls, fill) {
var res = null;
for (var i = 0; i < nbEls; i++)
res = new sc_Pair(fill, res);
return res;
}
/*** META ((export #t)) */
function sc_length(l) {
var res = 0;
while (l !== null) {
res++;
l = l.cdr;
}
return res;
}
/*** META ((export #t)) */
function sc_remq(o, l) {
var dummy = { cdr : null };
var tail = dummy;
while (l !== null) {
if (l.car !== o) {
tail.cdr = sc_cons(l.car, null);
tail = tail.cdr;
}
l = l.cdr;
}
return dummy.cdr;
}
/*** META ((export #t)) */
function sc_remqBang(o, l) {
var dummy = { cdr : null };
var tail = dummy;
var needsAssig = true;
while (l !== null) {
if (l.car === o) {
needsAssig = true;
} else {
if (needsAssig) {
tail.cdr = l;
needsAssig = false;
}
tail = l;
}
l = l.cdr;
}
tail.cdr = null;
return dummy.cdr;
}
/*** META ((export #t)) */
function sc_delete(o, l) {
var dummy = { cdr : null };
var tail = dummy;
while (l !== null) {
if (!sc_isEqual(l.car, o)) {
tail.cdr = sc_cons(l.car, null);
tail = tail.cdr;
}
l = l.cdr;
}
return dummy.cdr;
}
/*** META ((export #t)) */
function sc_deleteBang(o, l) {
var dummy = { cdr : null };
var tail = dummy;
var needsAssig = true;
while (l !== null) {
if (sc_isEqual(l.car, o)) {
needsAssig = true;
} else {
if (needsAssig) {
tail.cdr = l;
needsAssig = false;
}
tail = l;
}
l = l.cdr;
}
tail.cdr = null;
return dummy.cdr;
}
function sc_reverseAppendBang(l1, l2) {
var res = l2;
while (l1 !== null) {
var tmp = res;
res = l1;
l1 = l1.cdr;
res.cdr = tmp;
}
return res;
}
function sc_dualAppend(l1, l2) {
if (l1 === null) return l2;
if (l2 === null) return l1;
var rev = sc_reverse(l1);
return sc_reverseAppendBang(rev, l2);
}
/*** META ((export #t)) */
function sc_append() {
if (arguments.length === 0)
return null;
var res = arguments[arguments.length - 1];
for (var i = arguments.length - 2; i >= 0; i--)
res = sc_dualAppend(arguments[i], res);
return res;
}
function sc_dualAppendBang(l1, l2) {
if (l1 === null) return l2;
if (l2 === null) return l1;
var tmp = l1;
while (tmp.cdr !== null) tmp=tmp.cdr;
tmp.cdr = l2;
return l1;
}
/*** META ((export #t)) */
function sc_appendBang() {
var res = null;
for (var i = 0; i < arguments.length; i++)
res = sc_dualAppendBang(res, arguments[i]);
return res;
}
/*** META ((export #t)) */
function sc_reverse(l1) {
var res = null;
while (l1 !== null) {
res = sc_cons(l1.car, res);
l1 = l1.cdr;
}
return res;
}
/*** META ((export #t)) */
function sc_reverseBang(l) {
return sc_reverseAppendBang(l, null);
}
/*** META ((export #t)) */
function sc_listTail(l, k) {
var res = l;
for (var i = 0; i < k; i++) {
res = res.cdr;
}
return res;
}
/*** META ((export #t)) */
function sc_listRef(l, k) {
return sc_listTail(l, k).car;
}
/* // unoptimized generic versions
function sc_memX(o, l, comp) {
while (l != null) {
if (comp(l.car, o))
return l;
l = l.cdr;
}
return false;
}
function sc_memq(o, l) { return sc_memX(o, l, sc_isEq); }
function sc_memv(o, l) { return sc_memX(o, l, sc_isEqv); }
function sc_member(o, l) { return sc_memX(o, l, sc_isEqual); }
*/
/* optimized versions */
/*** META ((export #t)) */
function sc_memq(o, l) {
while (l !== null) {
if (l.car === o)
return l;
l = l.cdr;
}
return false;
}
/*** META ((export #t)) */
function sc_memv(o, l) {
while (l !== null) {
if (l.car === o)
return l;
l = l.cdr;
}
return false;
}
/*** META ((export #t)) */
function sc_member(o, l) {
while (l !== null) {
if (sc_isEqual(l.car,o))
return l;
l = l.cdr;
}
return false;
}
/* // generic unoptimized versions
function sc_assX(o, al, comp) {
while (al != null) {
if (comp(al.car.car, o))
return al.car;
al = al.cdr;
}
return false;
}
function sc_assq(o, al) { return sc_assX(o, al, sc_isEq); }
function sc_assv(o, al) { return sc_assX(o, al, sc_isEqv); }
function sc_assoc(o, al) { return sc_assX(o, al, sc_isEqual); }
*/
// optimized versions
/*** META ((export #t)) */
function sc_assq(o, al) {
while (al !== null) {
if (al.car.car === o)
return al.car;
al = al.cdr;
}
return false;
}
/*** META ((export #t)) */
function sc_assv(o, al) {
while (al !== null) {
if (al.car.car === o)
return al.car;
al = al.cdr;
}
return false;
}
/*** META ((export #t)) */
function sc_assoc(o, al) {
while (al !== null) {
if (sc_isEqual(al.car.car, o))
return al.car;
al = al.cdr;
}
return false;
}
/* can be used for mutable strings and characters */
function sc_isCharStringEqual(cs1, cs2) { return cs1.val === cs2.val; }
function sc_isCharStringLess(cs1, cs2) { return cs1.val < cs2.val; }
function sc_isCharStringGreater(cs1, cs2) { return cs1.val > cs2.val; }
function sc_isCharStringLessEqual(cs1, cs2) { return cs1.val <= cs2.val; }
function sc_isCharStringGreaterEqual(cs1, cs2) { return cs1.val >= cs2.val; }
function sc_isCharStringCIEqual(cs1, cs2)
{ return cs1.val.toLowerCase() === cs2.val.toLowerCase(); }
function sc_isCharStringCILess(cs1, cs2)
{ return cs1.val.toLowerCase() < cs2.val.toLowerCase(); }
function sc_isCharStringCIGreater(cs1, cs2)
{ return cs1.val.toLowerCase() > cs2.val.toLowerCase(); }
function sc_isCharStringCILessEqual(cs1, cs2)
{ return cs1.val.toLowerCase() <= cs2.val.toLowerCase(); }
function sc_isCharStringCIGreaterEqual(cs1, cs2)
{ return cs1.val.toLowerCase() >= cs2.val.toLowerCase(); }
function sc_Char(c) {
var cached = sc_Char.lazy[c];
if (cached)
return cached;
this.val = c;
sc_Char.lazy[c] = this;
// add return, so FF does not complain.
return undefined;
}
sc_Char.lazy = new Object();
// thanks to Eric
sc_Char.char2readable = {
"\000": "#\\null",
"\007": "#\\bell",
"\010": "#\\backspace",
"\011": "#\\tab",
"\012": "#\\newline",
"\014": "#\\page",
"\015": "#\\return",
"\033": "#\\escape",
"\040": "#\\space",
"\177": "#\\delete",
/* poeticless names */
"\001": "#\\soh",
"\002": "#\\stx",
"\003": "#\\etx",
"\004": "#\\eot",
"\005": "#\\enq",
"\006": "#\\ack",
"\013": "#\\vt",
"\016": "#\\so",
"\017": "#\\si",
"\020": "#\\dle",
"\021": "#\\dc1",
"\022": "#\\dc2",
"\023": "#\\dc3",
"\024": "#\\dc4",
"\025": "#\\nak",
"\026": "#\\syn",
"\027": "#\\etb",
"\030": "#\\can",
"\031": "#\\em",
"\032": "#\\sub",
"\033": "#\\esc",
"\034": "#\\fs",
"\035": "#\\gs",
"\036": "#\\rs",
"\037": "#\\us"};
sc_Char.readable2char = {
"null": "\000",
"bell": "\007",
"backspace": "\010",
"tab": "\011",
"newline": "\012",
"page": "\014",
"return": "\015",
"escape": "\033",
"space": "\040",
"delete": "\000",
"soh": "\001",
"stx": "\002",
"etx": "\003",
"eot": "\004",
"enq": "\005",
"ack": "\006",
"bel": "\007",
"bs": "\010",
"ht": "\011",
"nl": "\012",
"vt": "\013",
"np": "\014",
"cr": "\015",
"so": "\016",
"si": "\017",
"dle": "\020",
"dc1": "\021",
"dc2": "\022",
"dc3": "\023",
"dc4": "\024",
"nak": "\025",
"syn": "\026",
"etb": "\027",
"can": "\030",
"em": "\031",
"sub": "\032",
"esc": "\033",
"fs": "\034",
"gs": "\035",
"rs": "\036",
"us": "\037",
"sp": "\040",
"del": "\177"};
sc_Char.prototype.toString = function() {
return this.val;
};
// sc_toDisplayString == toString
sc_Char.prototype.sc_toWriteString = function() {
var entry = sc_Char.char2readable[this.val];
if (entry)
return entry;
else
return "#\\" + this.val;
};
/*** META ((export #t)
(type bool)
(peephole (postfix "instanceof sc_Char")))
*/
function sc_isChar(c) {
return (c instanceof sc_Char);
}
/*** META ((export char=?)
(type bool)
(peephole (hole 2 c1 ".val === " c2 ".val")))
*/
var sc_isCharEqual = sc_isCharStringEqual;
/*** META ((export char)
(type bool)
(peephole (hole 2 c1 ".val < " c2 ".val")))
*/
var sc_isCharLess = sc_isCharStringLess;
/*** META ((export char>?)
(type bool)
(peephole (hole 2 c1 ".val > " c2 ".val")))
*/
var sc_isCharGreater = sc_isCharStringGreater;
/*** META ((export char<=?)
(type bool)
(peephole (hole 2 c1 ".val <= " c2 ".val")))
*/
var sc_isCharLessEqual = sc_isCharStringLessEqual;
/*** META ((export char>=?)
(type bool)
(peephole (hole 2 c1 ".val >= " c2 ".val")))
*/
var sc_isCharGreaterEqual = sc_isCharStringGreaterEqual;
/*** META ((export char-ci=?)
(type bool)
(peephole (hole 2 c1 ".val.toLowerCase() === " c2 ".val.toLowerCase()")))
*/
var sc_isCharCIEqual = sc_isCharStringCIEqual;
/*** META ((export char-ci)
(type bool)
(peephole (hole 2 c1 ".val.toLowerCase() < " c2 ".val.toLowerCase()")))
*/
var sc_isCharCILess = sc_isCharStringCILess;
/*** META ((export char-ci>?)
(type bool)
(peephole (hole 2 c1 ".val.toLowerCase() > " c2 ".val.toLowerCase()")))
*/
var sc_isCharCIGreater = sc_isCharStringCIGreater;
/*** META ((export char-ci<=?)
(type bool)
(peephole (hole 2 c1 ".val.toLowerCase() <= " c2 ".val.toLowerCase()")))
*/
var sc_isCharCILessEqual = sc_isCharStringCILessEqual;
/*** META ((export char-ci>=?)
(type bool)
(peephole (hole 2 c1 ".val.toLowerCase() >= " c2 ".val.toLowerCase()")))
*/
var sc_isCharCIGreaterEqual = sc_isCharStringCIGreaterEqual;
var SC_NUMBER_CLASS = "0123456789";
var SC_WHITESPACE_CLASS = ' \r\n\t\f';
var SC_LOWER_CLASS = 'abcdefghijklmnopqrstuvwxyz';
var SC_UPPER_CLASS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
function sc_isCharOfClass(c, cl) { return (cl.indexOf(c) != -1); }
/*** META ((export #t)
(type bool))
*/
function sc_isCharAlphabetic(c)
{ return sc_isCharOfClass(c.val, SC_LOWER_CLASS) ||
sc_isCharOfClass(c.val, SC_UPPER_CLASS); }
/*** META ((export #t)
(type bool)
(peephole (hole 1 "SC_NUMBER_CLASS.indexOf(" c ".val) != -1")))
*/
function sc_isCharNumeric(c)
{ return sc_isCharOfClass(c.val, SC_NUMBER_CLASS); }
/*** META ((export #t)
(type bool))
*/
function sc_isCharWhitespace(c) {
var tmp = c.val;
return tmp === " " || tmp === "\r" || tmp === "\n" || tmp === "\t" || tmp === "\f";
}
/*** META ((export #t)
(type bool)
(peephole (hole 1 "SC_UPPER_CLASS.indexOf(" c ".val) != -1")))
*/
function sc_isCharUpperCase(c)
{ return sc_isCharOfClass(c.val, SC_UPPER_CLASS); }
/*** META ((export #t)
(type bool)
(peephole (hole 1 "SC_LOWER_CLASS.indexOf(" c ".val) != -1")))
*/
function sc_isCharLowerCase(c)
{ return sc_isCharOfClass(c.val, SC_LOWER_CLASS); }
/*** META ((export #t)
(peephole (postfix ".val.charCodeAt(0)")))
*/
function sc_char2integer(c)
{ return c.val.charCodeAt(0); }
/*** META ((export #t)
(peephole (hole 1 "new sc_Char(String.fromCharCode(" n "))")))
*/
function sc_integer2char(n)
{ return new sc_Char(String.fromCharCode(n)); }
/*** META ((export #t)
(peephole (hole 1 "new sc_Char(" c ".val.toUpperCase())")))
*/
function sc_charUpcase(c)
{ return new sc_Char(c.val.toUpperCase()); }
/*** META ((export #t)
(peephole (hole 1 "new sc_Char(" c ".val.toLowerCase())")))
*/
function sc_charDowncase(c)
{ return new sc_Char(c.val.toLowerCase()); }
function sc_makeJSStringOfLength(k, c) {
var fill;
if (c === undefined)
fill = " ";
else
fill = c;
var res = "";
var len = 1;
// every round doubles the size of fill.
while (k >= len) {
if (k & len)
res = res.concat(fill);
fill = fill.concat(fill);
len *= 2;
}
return res;
}
function sc_makejsString(k, c) {
var fill;
if (c)
fill = c.val;
else
fill = " ";
return sc_makeJSStringOfLength(k, fill);
}
function sc_jsstring2list(s) {
var res = null;
for (var i = s.length - 1; i >= 0; i--)
res = sc_cons(new sc_Char(s.charAt(i)), res);
return res;
}
function sc_list2jsstring(l) {
var a = new Array();
while(l !== null) {
a.push(l.car.val);
l = l.cdr;
}
return "".concat.apply("", a);
}
var sc_Vector = Array;
sc_Vector.prototype.sc_toWriteOrDisplayString = function(writeOrDisplay) {
if (this.length === 0) return "#()";
var res = "#(" + writeOrDisplay(this[0]);
for (var i = 1; i < this.length; i++)
res += " " + writeOrDisplay(this[i]);
res += ")";
return res;
};
sc_Vector.prototype.sc_toDisplayString = function() {
return this.sc_toWriteOrDisplayString(sc_toDisplayString);
};
sc_Vector.prototype.sc_toWriteString = function() {
return this.sc_toWriteOrDisplayString(sc_toWriteString);
};
/*** META ((export vector? array?)
(type bool)
(peephole (postfix " instanceof sc_Vector")))
*/
function sc_isVector(v) {
return (v instanceof sc_Vector);
}
// only applies to vectors
function sc_isVectorEqual(v1, v2, comp) {
if (v1.length !== v2.length) return false;
for (var i = 0; i < v1.length; i++)
if (!comp(v1[i], v2[i])) return false;
return true;
}
/*** META ((export make-vector make-array)) */
function sc_makeVector(size, fill) {
var a = new sc_Vector(size);
if (fill !== undefined)
sc_vectorFillBang(a, fill);
return a;
}
/*** META ((export vector array)
(peephole (vector)))
*/
function sc_vector() {
var a = new sc_Vector();
for (var i = 0; i < arguments.length; i++)
a.push(arguments[i]);
return a;
}
/*** META ((export vector-length array-length)
(peephole (postfix ".length")))
*/
function sc_vectorLength(v) {
return v.length;
}
/*** META ((export vector-ref array-ref)
(peephole (hole 2 v "[" pos "]")))
*/
function sc_vectorRef(v, pos) {
return v[pos];
}
/*** META ((export vector-set! array-set!)
(peephole (hole 3 v "[" pos "] = " val)))
*/
function sc_vectorSetBang(v, pos, val) {
v[pos] = val;
}
/*** META ((export vector->list array->list)) */
function sc_vector2list(a) {
var res = null;
for (var i = a.length-1; i >= 0; i--)
res = sc_cons(a[i], res);
return res;
}
/*** META ((export list->vector list->array)) */
function sc_list2vector(l) {
var a = new sc_Vector();
while(l !== null) {
a.push(l.car);
l = l.cdr;
}
return a;
}
/*** META ((export vector-fill! array-fill!)) */
function sc_vectorFillBang(a, fill) {
for (var i = 0; i < a.length; i++)
a[i] = fill;
}
/*** META ((export #t)) */
function sc_copyVector(a, len) {
if (len <= a.length)
return a.slice(0, len);
else {
var tmp = a.concat();
tmp.length = len;
return tmp;
}
}
/*** META ((export #t)
(peephole (hole 3 a ".slice(" start "," end ")")))
*/
function sc_vectorCopy(a, start, end) {
return a.slice(start, end);
}
/*** META ((export #t)) */
function sc_vectorCopyBang(target, tstart, source, sstart, send) {
if (!sstart) sstart = 0;
if (!send) send = source.length;
// if target == source we don't want to overwrite not yet copied elements.
if (tstart <= sstart) {
for (var i = tstart, j = sstart; j < send; i++, j++) {
target[i] = source[j];
}
} else {
var diff = send - sstart;
for (var i = tstart + diff - 1, j = send - 1;
j >= sstart;
i--, j--) {
target[i] = source[j];
}
}
return target;
}
/*** META ((export #t)
(type bool)
(peephole (hole 1 "typeof " o " === 'function'")))
*/
function sc_isProcedure(o) {
return (typeof o === "function");
}
/*** META ((export #t)) */
function sc_apply(proc) {
var args = new Array();
// first part of arguments are not in list-form.
for (var i = 1; i < arguments.length - 1; i++)
args.push(arguments[i]);
var l = arguments[arguments.length - 1];
while (l !== null) {
args.push(l.car);
l = l.cdr;
}
return proc.apply(null, args);
}
/*** META ((export #t)) */
function sc_map(proc, l1) {
if (l1 === undefined)
return null;
// else
var nbApplyArgs = arguments.length - 1;
var applyArgs = new Array(nbApplyArgs);
var revres = null;
while (l1 !== null) {
for (var i = 0; i < nbApplyArgs; i++) {
applyArgs[i] = arguments[i + 1].car;
arguments[i + 1] = arguments[i + 1].cdr;
}
revres = sc_cons(proc.apply(null, applyArgs), revres);
}
return sc_reverseAppendBang(revres, null);
}
/*** META ((export #t)) */
function sc_mapBang(proc, l1) {
if (l1 === undefined)
return null;
// else
var l1_orig = l1;
var nbApplyArgs = arguments.length - 1;
var applyArgs = new Array(nbApplyArgs);
while (l1 !== null) {
var tmp = l1;
for (var i = 0; i < nbApplyArgs; i++) {
applyArgs[i] = arguments[i + 1].car;
arguments[i + 1] = arguments[i + 1].cdr;
}
tmp.car = proc.apply(null, applyArgs);
}
return l1_orig;
}
/*** META ((export #t)) */
function sc_forEach(proc, l1) {
if (l1 === undefined)
return undefined;
// else
var nbApplyArgs = arguments.length - 1;
var applyArgs = new Array(nbApplyArgs);
while (l1 !== null) {
for (var i = 0; i < nbApplyArgs; i++) {
applyArgs[i] = arguments[i + 1].car;
arguments[i + 1] = arguments[i + 1].cdr;
}
proc.apply(null, applyArgs);
}
// add return so FF does not complain.
return undefined;
}
/*** META ((export #t)) */
function sc_filter(proc, l1) {
var dummy = { cdr : null };
var tail = dummy;
while (l1 !== null) {
if (proc(l1.car) !== false) {
tail.cdr = sc_cons(l1.car, null);
tail = tail.cdr;
}
l1 = l1.cdr;
}
return dummy.cdr;
}
/*** META ((export #t)) */
function sc_filterBang(proc, l1) {
var head = sc_cons("dummy", l1);
var it = head;
var next = l1;
while (next !== null) {
if (proc(next.car) !== false) {
it.cdr = next
it = next;
}
next = next.cdr;
}
it.cdr = null;
return head.cdr;
}
function sc_filterMap1(proc, l1) {
var revres = null;
while (l1 !== null) {
var tmp = proc(l1.car)
if (tmp !== false) revres = sc_cons(tmp, revres);
l1 = l1.cdr;
}
return sc_reverseAppendBang(revres, null);
}
function sc_filterMap2(proc, l1, l2) {
var revres = null;
while (l1 !== null) {
var tmp = proc(l1.car, l2.car);
if(tmp !== false) revres = sc_cons(tmp, revres);
l1 = l1.cdr;
l2 = l2.cdr
}
return sc_reverseAppendBang(revres, null);
}
/*** META ((export #t)) */
function sc_filterMap(proc, l1, l2, l3) {
if (l2 === undefined)
return sc_filterMap1(proc, l1);
else if (l3 === undefined)
return sc_filterMap2(proc, l1, l2);
// else
var nbApplyArgs = arguments.length - 1;
var applyArgs = new Array(nbApplyArgs);
var revres = null;
while (l1 !== null) {
for (var i = 0; i < nbApplyArgs; i++) {
applyArgs[i] = arguments[i + 1].car;
arguments[i + 1] = arguments[i + 1].cdr;
}
var tmp = proc.apply(null, applyArgs);
if(tmp !== false) revres = sc_cons(tmp, revres);
}
return sc_reverseAppendBang(revres, null);
}
/*** META ((export #t)) */
function sc_any(proc, l) {
var revres = null;
while (l !== null) {
var tmp = proc(l.car);
if(tmp !== false) return tmp;
l = l.cdr;
}
return false;
}
/*** META ((export any?)
(peephole (hole 2 "sc_any(" proc "," l ") !== false")))
*/
function sc_anyPred(proc, l) {
return sc_any(proc, l)!== false;
}
/*** META ((export #t)) */
function sc_every(proc, l) {
var revres = null;
var tmp = true;
while (l !== null) {
tmp = proc(l.car);
if (tmp === false) return false;
l = l.cdr;
}
return tmp;
}
/*** META ((export every?)
(peephole (hole 2 "sc_every(" proc "," l ") !== false")))
*/
function sc_everyPred(proc, l) {
var tmp = sc_every(proc, l);
if (tmp !== false) return true;
return false;
}
/*** META ((export #t)
(peephole (postfix "()")))
*/
function sc_force(o) {
return o();
}
/*** META ((export #t)) */
function sc_makePromise(proc) {
var isResultReady = false;
var result = undefined;
return function() {
if (!isResultReady) {
var tmp = proc();
if (!isResultReady) {
isResultReady = true;
result = tmp;
}
}
return result;
};
}
function sc_Values(values) {
this.values = values;
}
/*** META ((export #t)
(peephole (values)))
*/
function sc_values() {
if (arguments.length === 1)
return arguments[0];
else
return new sc_Values(arguments);
}
/*** META ((export #t)) */
function sc_callWithValues(producer, consumer) {
var produced = producer();
if (produced instanceof sc_Values)
return consumer.apply(null, produced.values);
else
return consumer(produced);
}
/*** META ((export #t)) */
function sc_dynamicWind(before, thunk, after) {
before();
try {
var res = thunk();
return res;
} finally {
after();
}
}
// TODO: eval/scheme-report-environment/null-environment/interaction-environment
// LIMITATION: 'load' doesn't exist without files.
// LIMITATION: transcript-on/transcript-off doesn't exist without files.
function sc_Struct(name) {
this.name = name;
}
sc_Struct.prototype.sc_toDisplayString = function() {
return "#";
};
sc_Struct.prototype.sc_toWriteString = sc_Struct.prototype.sc_toDisplayString;
/*** META ((export #t)
(peephole (hole 1 "new sc_Struct(" name ")")))
*/
function sc_makeStruct(name) {
return new sc_Struct(name);
}
/*** META ((export #t)
(type bool)
(peephole (postfix " instanceof sc_Struct")))
*/
function sc_isStruct(o) {
return (o instanceof sc_Struct);
}
/*** META ((export #t)
(type bool)
(peephole (hole 2 "(" 1 " instanceof sc_Struct) && ( " 1 ".name === " 0 ")")))
*/
function sc_isStructNamed(name, s) {
return ((s instanceof sc_Struct) && (s.name === name));
}
/*** META ((export struct-field)
(peephole (hole 3 0 "[" 2 "]")))
*/
function sc_getStructField(s, name, field) {
return s[field];
}
/*** META ((export struct-field-set!)
(peephole (hole 4 0 "[" 2 "] = " 3)))
*/
function sc_setStructFieldBang(s, name, field, val) {
s[field] = val;
}
/*** META ((export #t)
(peephole (prefix "~")))
*/
function sc_bitNot(x) {
return ~x;
}
/*** META ((export #t)
(peephole (infix 2 2 "&")))
*/
function sc_bitAnd(x, y) {
return x & y;
}
/*** META ((export #t)
(peephole (infix 2 2 "|")))
*/
function sc_bitOr(x, y) {
return x | y;
}
/*** META ((export #t)
(peephole (infix 2 2 "^")))
*/
function sc_bitXor(x, y) {
return x ^ y;
}
/*** META ((export #t)
(peephole (infix 2 2 "<<")))
*/
function sc_bitLsh(x, y) {
return x << y;
}
/*** META ((export #t)
(peephole (infix 2 2 ">>")))
*/
function sc_bitRsh(x, y) {
return x >> y;
}
/*** META ((export #t)
(peephole (infix 2 2 ">>>")))
*/
function sc_bitUrsh(x, y) {
return x >>> y;
}
/*** META ((export js-field js-property)
(peephole (hole 2 o "[" field "]")))
*/
function sc_jsField(o, field) {
return o[field];
}
/*** META ((export js-field-set! js-property-set!)
(peephole (hole 3 o "[" field "] = " val)))
*/
function sc_setJsFieldBang(o, field, val) {
return o[field] = val;
}
/*** META ((export js-field-delete! js-property-delete!)
(peephole (hole 2 "delete" o "[" field "]")))
*/
function sc_deleteJsFieldBang(o, field) {
delete o[field];
}
/*** META ((export #t)
(peephole (jsCall)))
*/
function sc_jsCall(o, fun) {
var args = new Array();
for (var i = 2; i < arguments.length; i++)
args[i-2] = arguments[i];
return fun.apply(o, args);
}
/*** META ((export #t)
(peephole (jsMethodCall)))
*/
function sc_jsMethodCall(o, field) {
var args = new Array();
for (var i = 2; i < arguments.length; i++)
args[i-2] = arguments[i];
return o[field].apply(o, args);
}
/*** META ((export new js-new)
(peephole (jsNew)))
*/
function sc_jsNew(c) {
var evalStr = "new c(";
evalStr +=arguments.length > 1? "arguments[1]": "";
for (var i = 2; i < arguments.length; i++)
evalStr += ", arguments[" + i + "]";
evalStr +=")";
return eval(evalStr);
}
// ======================== RegExp ====================
/*** META ((export #t)) */
function sc_pregexp(re) {
return new RegExp(sc_string2jsstring(re));
}
/*** META ((export #t)) */
function sc_pregexpMatch(re, s) {
var reg = (re instanceof RegExp) ? re : sc_pregexp(re);
var tmp = reg.exec(sc_string2jsstring(s));
if (tmp == null) return false;
var res = null;
for (var i = tmp.length-1; i >= 0; i--) {
if (tmp[i] !== null) {
res = sc_cons(sc_jsstring2string(tmp[i]), res);
} else {
res = sc_cons(false, res);
}
}
return res;
}
/*** META ((export #t)) */
function sc_pregexpReplace(re, s1, s2) {
var reg;
var jss1 = sc_string2jsstring(s1);
var jss2 = sc_string2jsstring(s2);
if (re instanceof RegExp) {
if (re.global)
reg = re;
else
reg = new RegExp(re.source);
} else {
reg = new RegExp(sc_string2jsstring(re));
}
return jss1.replace(reg, jss2);
}
/*** META ((export pregexp-replace*)) */
function sc_pregexpReplaceAll(re, s1, s2) {
var reg;
var jss1 = sc_string2jsstring(s1);
var jss2 = sc_string2jsstring(s2);
if (re instanceof RegExp) {
if (re.global)
reg = re;
else
reg = new RegExp(re.source, "g");
} else {
reg = new RegExp(sc_string2jsstring(re), "g");
}
return jss1.replace(reg, jss2);
}
/*** META ((export #t)) */
function sc_pregexpSplit(re, s) {
var reg = ((re instanceof RegExp) ?
re :
new RegExp(sc_string2jsstring(re)));
var jss = sc_string2jsstring(s);
var tmp = jss.split(reg);
if (tmp == null) return false;
return sc_vector2list(tmp);
}
/* =========================================================================== */
/* Other library stuff */
/* =========================================================================== */
/*** META ((export #t)
(peephole (hole 1 "Math.floor(Math.random()*" 'n ")")))
*/
function sc_random(n) {
return Math.floor(Math.random()*n);
}
/*** META ((export current-date)
(peephole (hole 0 "new Date()")))
*/
function sc_currentDate() {
return new Date();
}
function sc_Hashtable() {
}
sc_Hashtable.prototype.toString = function() {
return "#{%hashtable}";
};
// sc_toWriteString == sc_toDisplayString == toString
function sc_HashtableElement(key, val) {
this.key = key;
this.val = val;
}
/*** META ((export #t)
(peephole (hole 0 "new sc_Hashtable()")))
*/
function sc_makeHashtable() {
return new sc_Hashtable();
}
/*** META ((export #t)) */
function sc_hashtablePutBang(ht, key, val) {
var hash = sc_hash(key);
ht[hash] = new sc_HashtableElement(key, val);
}
/*** META ((export #t)) */
function sc_hashtableGet(ht, key) {
var hash = sc_hash(key);
if (hash in ht)
return ht[hash].val;
else
return false;
}
/*** META ((export #t)) */
function sc_hashtableForEach(ht, f) {
for (var v in ht) {
if (ht[v] instanceof sc_HashtableElement)
f(ht[v].key, ht[v].val);
}
}
/*** META ((export hashtable-contains?)
(peephole (hole 2 "sc_hash(" 1 ") in " 0)))
*/
function sc_hashtableContains(ht, key) {
var hash = sc_hash(key);
if (hash in ht)
return true;
else
return false;
}
var SC_HASH_COUNTER = 0;
function sc_hash(o) {
if (o === null)
return "null";
else if (o === undefined)
return "undefined";
else if (o === true)
return "true";
else if (o === false)
return "false";
else if (typeof o === "number")
return "num-" + o;
else if (typeof o === "string")
return "jsstr-" + o;
else if (o.sc_getHash)
return o.sc_getHash();
else
return sc_counterHash.call(o);
}
function sc_counterHash() {
if (!this.sc_hash) {
this.sc_hash = "hash-" + SC_HASH_COUNTER;
SC_HASH_COUNTER++;
}
return this.sc_hash;
}
function sc_Trampoline(args, maxTailCalls) {
this['__trampoline return__'] = true;
this.args = args;
this.MAX_TAIL_CALLs = maxTailCalls;
}
// TODO: call/cc stuff
sc_Trampoline.prototype.restart = function() {
var o = this;
while (true) {
// set both globals.
SC_TAIL_OBJECT.calls = o.MAX_TAIL_CALLs-1;
var fun = o.args.callee;
var res = fun.apply(SC_TAIL_OBJECT, o.args);
if (res instanceof sc_Trampoline)
o = res;
else
return res;
}
}
/*** META ((export bind-exit-lambda)) */
function sc_bindExitLambda(proc) {
var escape_obj = new sc_BindExitException();
var escape = function(res) {
escape_obj.res = res;
throw escape_obj;
};
try {
return proc(escape);
} catch(e) {
if (e === escape_obj) {
return e.res;
}
throw e;
}
}
function sc_BindExitException() {
this._internalException = true;
}
var SC_SCM2JS_GLOBALS = new Object();
// default tail-call depth.
// normally the program should set it again. but just in case...
var SC_TAIL_OBJECT = new Object();
SC_SCM2JS_GLOBALS.TAIL_OBJECT = SC_TAIL_OBJECT;
// ======================== I/O =======================
/*------------------------------------------------------------------*/
function sc_EOF() {
}
var SC_EOF_OBJECT = new sc_EOF();
function sc_Port() {
}
/* --------------- Input ports -------------------------------------*/
function sc_InputPort() {
}
sc_InputPort.prototype = new sc_Port();
sc_InputPort.prototype.peekChar = function() {
if (!("peeked" in this))
this.peeked = this.getNextChar();
return this.peeked;
}
sc_InputPort.prototype.readChar = function() {
var tmp = this.peekChar();
delete this.peeked;
return tmp;
}
sc_InputPort.prototype.isCharReady = function() {
return true;
}
sc_InputPort.prototype.close = function() {
// do nothing
}
/* .............. String port ..........................*/
function sc_ErrorInputPort() {
};
sc_ErrorInputPort.prototype = new sc_InputPort();
sc_ErrorInputPort.prototype.getNextChar = function() {
throw "can't read from error-port.";
};
sc_ErrorInputPort.prototype.isCharReady = function() {
return false;
};
/* .............. String port ..........................*/
function sc_StringInputPort(jsStr) {
// we are going to do some charAts on the str.
// instead of recreating all the time a String-object, we
// create one in the beginning. (not sure, if this is really an optim)
this.str = new String(jsStr);
this.pos = 0;
}
sc_StringInputPort.prototype = new sc_InputPort();
sc_StringInputPort.prototype.getNextChar = function() {
if (this.pos >= this.str.length)
return SC_EOF_OBJECT;
return this.str.charAt(this.pos++);
};
/* ------------- Read and other lib-funs -------------------------------*/
function sc_Token(type, val, pos) {
this.type = type;
this.val = val;
this.pos = pos;
}
sc_Token.EOF = 0/*EOF*/;
sc_Token.OPEN_PAR = 1/*OPEN_PAR*/;
sc_Token.CLOSE_PAR = 2/*CLOSE_PAR*/;
sc_Token.OPEN_BRACE = 3/*OPEN_BRACE*/;
sc_Token.CLOSE_BRACE = 4/*CLOSE_BRACE*/;
sc_Token.OPEN_BRACKET = 5/*OPEN_BRACKET*/;
sc_Token.CLOSE_BRACKET = 6/*CLOSE_BRACKET*/;
sc_Token.WHITESPACE = 7/*WHITESPACE*/;
sc_Token.QUOTE = 8/*QUOTE*/;
sc_Token.ID = 9/*ID*/;
sc_Token.DOT = 10/*DOT*/;
sc_Token.STRING = 11/*STRING*/;
sc_Token.NUMBER = 12/*NUMBER*/;
sc_Token.ERROR = 13/*ERROR*/;
sc_Token.VECTOR_BEGIN = 14/*VECTOR_BEGIN*/;
sc_Token.TRUE = 15/*TRUE*/;
sc_Token.FALSE = 16/*FALSE*/;
sc_Token.UNSPECIFIED = 17/*UNSPECIFIED*/;
sc_Token.REFERENCE = 18/*REFERENCE*/;
sc_Token.STORE = 19/*STORE*/;
sc_Token.CHAR = 20/*CHAR*/;
var SC_ID_CLASS = SC_LOWER_CLASS + SC_UPPER_CLASS + "!$%*+-./:<=>?@^_~";
function sc_Tokenizer(port) {
this.port = port;
}
sc_Tokenizer.prototype.peekToken = function() {
if (this.peeked)
return this.peeked;
var newToken = this.nextToken();
this.peeked = newToken;
return newToken;
};
sc_Tokenizer.prototype.readToken = function() {
var tmp = this.peekToken();
delete this.peeked;
return tmp;
};
sc_Tokenizer.prototype.nextToken = function() {
var port = this.port;
function isNumberChar(c) {
return (c >= "0" && c <= "9");
};
function isIdOrNumberChar(c) {
return SC_ID_CLASS.indexOf(c) != -1 || // ID-char
(c >= "0" && c <= "9");
}
function isWhitespace(c) {
return c === " " || c === "\r" || c === "\n" || c === "\t" || c === "\f";
};
function isWhitespaceOrEOF(c) {
return isWhitespace(c) || c === SC_EOF_OBJECT;
};
function readString() {
res = "";
while (true) {
var c = port.readChar();
switch (c) {
case '"':
return new sc_Token(11/*STRING*/, res);
case "\\":
var tmp = port.readChar();
switch (tmp) {
case '0': res += "\0"; break;
case 'a': res += "\a"; break;
case 'b': res += "\b"; break;
case 'f': res += "\f"; break;
case 'n': res += "\n"; break;
case 'r': res += "\r"; break;
case 't': res += "\t"; break;
case 'v': res += "\v"; break;
case '"': res += '"'; break;
case '\\': res += '\\'; break;
case 'x':
/* hexa-number */
var nb = 0;
while (true) {
var hexC = port.peekChar();
if (hexC >= '0' && hexC <= '9') {
port.readChar();
nb = nb * 16 + hexC.charCodeAt(0) - '0'.charCodeAt(0);
} else if (hexC >= 'a' && hexC <= 'f') {
port.readChar();
nb = nb * 16 + hexC.charCodeAt(0) - 'a'.charCodeAt(0);
} else if (hexC >= 'A' && hexC <= 'F') {
port.readChar();
nb = nb * 16 + hexC.charCodeAt(0) - 'A'.charCodeAt(0);
} else {
// next char isn't part of hex.
res += String.fromCharCode(nb);
break;
}
}
break;
default:
if (tmp === SC_EOF_OBJECT) {
return new sc_Token(13/*ERROR*/, "unclosed string-literal" + res);
}
res += tmp;
}
break;
default:
if (c === SC_EOF_OBJECT) {
return new sc_Token(13/*ERROR*/, "unclosed string-literal" + res);
}
res += c;
}
}
};
function readIdOrNumber(firstChar) {
var res = firstChar;
while (isIdOrNumberChar(port.peekChar()))
res += port.readChar();
if (isNaN(res))
return new sc_Token(9/*ID*/, res);
else
return new sc_Token(12/*NUMBER*/, res - 0);
};
function skipWhitespaceAndComments() {
var done = false;
while (!done) {
done = true;
while (isWhitespace(port.peekChar()))
port.readChar();
if (port.peekChar() === ';') {
port.readChar();
done = false;
while (true) {
curChar = port.readChar();
if (curChar === SC_EOF_OBJECT ||
curChar === '\n')
break;
}
}
}
};
function readDot() {
if (isWhitespace(port.peekChar()))
return new sc_Token(10/*DOT*/);
else
return readIdOrNumber(".");
};
function readSharp() {
var c = port.readChar();
if (isWhitespace(c))
return new sc_Token(13/*ERROR*/, "bad #-pattern0.");
// reference
if (isNumberChar(c)) {
var nb = c - 0;
while (isNumberChar(port.peekChar()))
nb = nb*10 + (port.readChar() - 0);
switch (port.readChar()) {
case '#':
return new sc_Token(18/*REFERENCE*/, nb);
case '=':
return new sc_Token(19/*STORE*/, nb);
default:
return new sc_Token(13/*ERROR*/, "bad #-pattern1." + nb);
}
}
if (c === "(")
return new sc_Token(14/*VECTOR_BEGIN*/);
if (c === "\\") { // character
var tmp = ""
while (!isWhitespaceOrEOF(port.peekChar()))
tmp += port.readChar();
switch (tmp.length) {
case 0: // it's escaping a whitespace char:
if (sc_isEOFObject(port.peekChar))
return new sc_Token(13/*ERROR*/, "bad #-pattern2.");
else
return new sc_Token(20/*CHAR*/, port.readChar());
case 1:
return new sc_Token(20/*CHAR*/, tmp);
default:
var entry = sc_Char.readable2char[tmp.toLowerCase()];
if (entry)
return new sc_Token(20/*CHAR*/, entry);
else
return new sc_Token(13/*ERROR*/, "unknown character description: #\\" + tmp);
}
}
// some constants (#t, #f, #unspecified)
var res;
var needing;
switch (c) {
case 't': res = new sc_Token(15/*TRUE*/, true); needing = ""; break;
case 'f': res = new sc_Token(16/*FALSE*/, false); needing = ""; break;
case 'u': res = new sc_Token(17/*UNSPECIFIED*/, undefined); needing = "nspecified"; break;
default:
return new sc_Token(13/*ERROR*/, "bad #-pattern3: " + c);
}
while(true) {
c = port.peekChar();
if ((isWhitespaceOrEOF(c) || c === ')') &&
needing == "")
return res;
else if (isWhitespace(c) || needing == "")
return new sc_Token(13/*ERROR*/, "bad #-pattern4 " + c + " " + needing);
else if (needing.charAt(0) == c) {
port.readChar(); // consume
needing = needing.slice(1);
} else
return new sc_Token(13/*ERROR*/, "bad #-pattern5");
}
};
skipWhitespaceAndComments();
var curChar = port.readChar();
if (curChar === SC_EOF_OBJECT)
return new sc_Token(0/*EOF*/, curChar);
switch (curChar)
{
case " ":
case "\n":
case "\t":
return readWhitespace();
case "(":
return new sc_Token(1/*OPEN_PAR*/);
case ")":
return new sc_Token(2/*CLOSE_PAR*/);
case "{":
return new sc_Token(3/*OPEN_BRACE*/);
case "}":
return new sc_Token(4/*CLOSE_BRACE*/);
case "[":
return new sc_Token(5/*OPEN_BRACKET*/);
case "]":
return new sc_Token(6/*CLOSE_BRACKET*/);
case "'":
return new sc_Token(8/*QUOTE*/);
case "#":
return readSharp();
case ".":
return readDot();
case '"':
return readString();
default:
if (isIdOrNumberChar(curChar))
return readIdOrNumber(curChar);
throw "unexpected character: " + curChar;
}
};
function sc_Reader(tokenizer) {
this.tokenizer = tokenizer;
this.backref = new Array();
}
sc_Reader.prototype.read = function() {
function readList(listBeginType) {
function matchesPeer(open, close) {
return open === 1/*OPEN_PAR*/ && close === 2/*CLOSE_PAR*/
|| open === 3/*OPEN_BRACE*/ && close === 4/*CLOSE_BRACE*/
|| open === 5/*OPEN_BRACKET*/ && close === 6/*CLOSE_BRACKET*/;
};
var res = null;
while (true) {
var token = tokenizer.peekToken();
switch (token.type) {
case 2/*CLOSE_PAR*/:
case 4/*CLOSE_BRACE*/:
case 6/*CLOSE_BRACKET*/:
if (matchesPeer(listBeginType, token.type)) {
tokenizer.readToken(); // consume token
return sc_reverseBang(res);
} else
throw "closing par doesn't match: " + listBeginType
+ " " + listEndType;
case 0/*EOF*/:
throw "unexpected end of file";
case 10/*DOT*/:
tokenizer.readToken(); // consume token
var cdr = this.read();
var par = tokenizer.readToken();
if (!matchesPeer(listBeginType, par.type))
throw "closing par doesn't match: " + listBeginType
+ " " + par.type;
else
return sc_reverseAppendBang(res, cdr);
default:
res = sc_cons(this.read(), res);
}
}
};
function readQuote() {
return sc_cons("quote", sc_cons(this.read(), null));
};
function readVector() {
// opening-parenthesis is already consumed
var a = new Array();
while (true) {
var token = tokenizer.peekToken();
switch (token.type) {
case 2/*CLOSE_PAR*/:
tokenizer.readToken();
return a;
default:
a.push(this.read());
}
}
};
function storeRefence(nb) {
var tmp = this.read();
this.backref[nb] = tmp;
return tmp;
};
function readReference(nb) {
if (nb in this.backref)
return this.backref[nb];
else
throw "bad reference: " + nb;
};
var tokenizer = this.tokenizer;
var token = tokenizer.readToken();
// handle error
if (token.type === 13/*ERROR*/)
throw token.val;
switch (token.type) {
case 1/*OPEN_PAR*/:
case 3/*OPEN_BRACE*/:
case 5/*OPEN_BRACKET*/:
return readList.call(this, token.type);
case 8/*QUOTE*/:
return readQuote.call(this);
case 11/*STRING*/:
return sc_jsstring2string(token.val);
case 20/*CHAR*/:
return new sc_Char(token.val);
case 14/*VECTOR_BEGIN*/:
return readVector.call(this);
case 18/*REFERENCE*/:
return readReference.call(this, token.val);
case 19/*STORE*/:
return storeRefence.call(this, token.val);
case 9/*ID*/:
return sc_jsstring2symbol(token.val);
case 0/*EOF*/:
case 12/*NUMBER*/:
case 15/*TRUE*/:
case 16/*FALSE*/:
case 17/*UNSPECIFIED*/:
return token.val;
default:
throw "unexpected token " + token.type + " " + token.val;
}
};
/*** META ((export #t)) */
function sc_read(port) {
if (port === undefined) // we assume the port hasn't been given.
port = SC_DEFAULT_IN; // THREAD: shared var...
var reader = new sc_Reader(new sc_Tokenizer(port));
return reader.read();
}
/*** META ((export #t)) */
function sc_readChar(port) {
if (port === undefined) // we assume the port hasn't been given.
port = SC_DEFAULT_IN; // THREAD: shared var...
var t = port.readChar();
return t === SC_EOF_OBJECT? t: new sc_Char(t);
}
/*** META ((export #t)) */
function sc_peekChar(port) {
if (port === undefined) // we assume the port hasn't been given.
port = SC_DEFAULT_IN; // THREAD: shared var...
var t = port.peekChar();
return t === SC_EOF_OBJECT? t: new sc_Char(t);
}
/*** META ((export #t)
(type bool))
*/
function sc_isCharReady(port) {
if (port === undefined) // we assume the port hasn't been given.
port = SC_DEFAULT_IN; // THREAD: shared var...
return port.isCharReady();
}
/*** META ((export #t)
(peephole (postfix ".close()")))
*/
function sc_closeInputPort(p) {
return p.close();
}
/*** META ((export #t)
(type bool)
(peephole (postfix " instanceof sc_InputPort")))
*/
function sc_isInputPort(o) {
return (o instanceof sc_InputPort);
}
/*** META ((export eof-object?)
(type bool)
(peephole (postfix " === SC_EOF_OBJECT")))
*/
function sc_isEOFObject(o) {
return o === SC_EOF_OBJECT;
}
/*** META ((export #t)
(peephole (hole 0 "SC_DEFAULT_IN")))
*/
function sc_currentInputPort() {
return SC_DEFAULT_IN;
}
/* ------------ file operations are not supported -----------*/
/*** META ((export #t)) */
function sc_callWithInputFile(s, proc) {
throw "can't open " + s;
}
/*** META ((export #t)) */
function sc_callWithOutputFile(s, proc) {
throw "can't open " + s;
}
/*** META ((export #t)) */
function sc_withInputFromFile(s, thunk) {
throw "can't open " + s;
}
/*** META ((export #t)) */
function sc_withOutputToFile(s, thunk) {
throw "can't open " + s;
}
/*** META ((export #t)) */
function sc_openInputFile(s) {
throw "can't open " + s;
}
/*** META ((export #t)) */
function sc_openOutputFile(s) {
throw "can't open " + s;
}
/* ----------------------------------------------------------------------------*/
/*** META ((export #t)) */
function sc_basename(p) {
var i = p.lastIndexOf('/');
if(i >= 0)
return p.substring(i + 1, p.length);
else
return '';
}
/*** META ((export #t)) */
function sc_dirname(p) {
var i = p.lastIndexOf('/');
if(i >= 0)
return p.substring(0, i);
else
return '';
}
/* ----------------------------------------------------------------------------*/
/*** META ((export #t)) */
function sc_withInputFromPort(p, thunk) {
try {
var tmp = SC_DEFAULT_IN; // THREAD: shared var.
SC_DEFAULT_IN = p;
return thunk();
} finally {
SC_DEFAULT_IN = tmp;
}
}
/*** META ((export #t)) */
function sc_withInputFromString(s, thunk) {
return sc_withInputFromPort(new sc_StringInputPort(sc_string2jsstring(s)), thunk);
}
/*** META ((export #t)) */
function sc_withOutputToPort(p, thunk) {
try {
var tmp = SC_DEFAULT_OUT; // THREAD: shared var.
SC_DEFAULT_OUT = p;
return thunk();
} finally {
SC_DEFAULT_OUT = tmp;
}
}
/*** META ((export #t)) */
function sc_withOutputToString(thunk) {
var p = new sc_StringOutputPort();
sc_withOutputToPort(p, thunk);
return p.close();
}
/*** META ((export #t)) */
function sc_withOutputToProcedure(proc, thunk) {
var t = function(s) { proc(sc_jsstring2string(s)); };
return sc_withOutputToPort(new sc_GenericOutputPort(t), thunk);
}
/*** META ((export #t)
(peephole (hole 0 "new sc_StringOutputPort()")))
*/
function sc_openOutputString() {
return new sc_StringOutputPort();
}
/*** META ((export #t)) */
function sc_openInputString(str) {
return new sc_StringInputPort(sc_string2jsstring(str));
}
/* ----------------------------------------------------------------------------*/
function sc_OutputPort() {
}
sc_OutputPort.prototype = new sc_Port();
sc_OutputPort.prototype.appendJSString = function(obj) {
/* do nothing */
}
sc_OutputPort.prototype.close = function() {
/* do nothing */
}
function sc_StringOutputPort() {
this.res = "";
}
sc_StringOutputPort.prototype = new sc_OutputPort();
sc_StringOutputPort.prototype.appendJSString = function(s) {
this.res += s;
}
sc_StringOutputPort.prototype.close = function() {
return sc_jsstring2string(this.res);
}
/*** META ((export #t)) */
function sc_getOutputString(sp) {
return sc_jsstring2string(sp.res);
}
function sc_ErrorOutputPort() {
}
sc_ErrorOutputPort.prototype = new sc_OutputPort();
sc_ErrorOutputPort.prototype.appendJSString = function(s) {
throw "don't write on ErrorPort!";
}
sc_ErrorOutputPort.prototype.close = function() {
/* do nothing */
}
function sc_GenericOutputPort(appendJSString, close) {
this.appendJSString = appendJSString;
if (close)
this.close = close;
}
sc_GenericOutputPort.prototype = new sc_OutputPort();
/*** META ((export #t)
(type bool)
(peephole (postfix " instanceof sc_OutputPort")))
*/
function sc_isOutputPort(o) {
return (o instanceof sc_OutputPort);
}
/*** META ((export #t)
(peephole (postfix ".close()")))
*/
function sc_closeOutputPort(p) {
return p.close();
}
/* ------------------ write ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_write(o, p) {
if (p === undefined) // we assume not given
p = SC_DEFAULT_OUT;
p.appendJSString(sc_toWriteString(o));
}
function sc_toWriteString(o) {
if (o === null)
return "()";
else if (o === true)
return "#t";
else if (o === false)
return "#f";
else if (o === undefined)
return "#unspecified";
else if (typeof o === 'function')
return "#";
else if (o.sc_toWriteString)
return o.sc_toWriteString();
else
return o.toString();
}
function sc_escapeWriteString(s) {
var res = "";
var j = 0;
for (i = 0; i < s.length; i++) {
switch (s.charAt(i)) {
case "\0": res += s.substring(j, i) + "\\0"; j = i + 1; break;
case "\b": res += s.substring(j, i) + "\\b"; j = i + 1; break;
case "\f": res += s.substring(j, i) + "\\f"; j = i + 1; break;
case "\n": res += s.substring(j, i) + "\\n"; j = i + 1; break;
case "\r": res += s.substring(j, i) + "\\r"; j = i + 1; break;
case "\t": res += s.substring(j, i) + "\\t"; j = i + 1; break;
case "\v": res += s.substring(j, i) + "\\v"; j = i + 1; break;
case '"': res += s.substring(j, i) + '\\"'; j = i + 1; break;
case "\\": res += s.substring(j, i) + "\\\\"; j = i + 1; break;
default:
var c = s.charAt(i);
if ("\a" !== "a" && c == "\a") {
res += s.substring(j, i) + "\\a"; j = i + 1; continue;
}
if ("\v" !== "v" && c == "\v") {
res += s.substring(j, i) + "\\v"; j = i + 1; continue;
}
//if (s.charAt(i) < ' ' || s.charCodeAt(i) > 127) {
// CARE: Manuel is this OK with HOP?
if (s.charAt(i) < ' ') {
/* non printable character and special chars */
res += s.substring(j, i) + "\\x" + s.charCodeAt(i).toString(16);
j = i + 1;
}
// else just let i increase...
}
}
res += s.substring(j, i);
return res;
}
/* ------------------ display ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_display(o, p) {
if (p === undefined) // we assume not given
p = SC_DEFAULT_OUT;
p.appendJSString(sc_toDisplayString(o));
}
function sc_toDisplayString(o) {
if (o === null)
return "()";
else if (o === true)
return "#t";
else if (o === false)
return "#f";
else if (o === undefined)
return "#unspecified";
else if (typeof o === 'function')
return "#";
else if (o.sc_toDisplayString)
return o.sc_toDisplayString();
else
return o.toString();
}
/* ------------------ newline ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_newline(p) {
if (p === undefined) // we assume not given
p = SC_DEFAULT_OUT;
p.appendJSString("\n");
}
/* ------------------ write-char ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_writeChar(c, p) {
if (p === undefined) // we assume not given
p = SC_DEFAULT_OUT;
p.appendJSString(c.val);
}
/* ------------------ write-circle ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_writeCircle(o, p) {
if (p === undefined) // we assume not given
p = SC_DEFAULT_OUT;
p.appendJSString(sc_toWriteCircleString(o));
}
function sc_toWriteCircleString(o) {
var symb = sc_gensym("writeCircle");
var nbPointer = new Object();
nbPointer.nb = 0;
sc_prepWriteCircle(o, symb, nbPointer);
return sc_genToWriteCircleString(o, symb);
}
function sc_prepWriteCircle(o, symb, nbPointer) {
// TODO sc_Struct
if (o instanceof sc_Pair ||
o instanceof sc_Vector) {
if (o[symb] !== undefined) {
// not the first visit.
o[symb]++;
// unless there is already a number, assign one.
if (!o[symb + "nb"]) o[symb + "nb"] = nbPointer.nb++;
return;
}
o[symb] = 0;
if (o instanceof sc_Pair) {
sc_prepWriteCircle(o.car, symb, nbPointer);
sc_prepWriteCircle(o.cdr, symb, nbPointer);
} else {
for (var i = 0; i < o.length; i++)
sc_prepWriteCircle(o[i], symb, nbPointer);
}
}
}
function sc_genToWriteCircleString(o, symb) {
if (!(o instanceof sc_Pair ||
o instanceof sc_Vector))
return sc_toWriteString(o);
return o.sc_toWriteCircleString(symb);
}
sc_Pair.prototype.sc_toWriteCircleString = function(symb, inList) {
if (this[symb + "use"]) { // use-flag is set. Just use it.
var nb = this[symb + "nb"];
if (this[symb]-- === 0) { // if we are the last use. remove all fields.
delete this[symb];
delete this[symb + "nb"];
delete this[symb + "use"];
}
if (inList)
return '. #' + nb + '#';
else
return '#' + nb + '#';
}
if (this[symb]-- === 0) { // if we are the last use. remove all fields.
delete this[symb];
delete this[symb + "nb"];
delete this[symb + "use"];
}
var res = "";
if (this[symb] !== undefined) { // implies > 0
this[symb + "use"] = true;
if (inList)
res += '. #' + this[symb + "nb"] + '=';
else
res += '#' + this[symb + "nb"] + '=';
inList = false;
}
if (!inList)
res += "(";
// print car
res += sc_genToWriteCircleString(this.car, symb);
if (sc_isPair(this.cdr)) {
res += " " + this.cdr.sc_toWriteCircleString(symb, true);
} else if (this.cdr !== null) {
res += " . " + sc_genToWriteCircleString(this.cdr, symb);
}
if (!inList)
res += ")";
return res;
};
sc_Vector.prototype.sc_toWriteCircleString = function(symb) {
if (this[symb + "use"]) { // use-flag is set. Just use it.
var nb = this[symb + "nb"];
if (this[symb]-- === 0) { // if we are the last use. remove all fields.
delete this[symb];
delete this[symb + "nb"];
delete this[symb + "use"];
}
return '#' + nb + '#';
}
if (this[symb]-- === 0) { // if we are the last use. remove all fields.
delete this[symb];
delete this[symb + "nb"];
delete this[symb + "use"];
}
var res = "";
if (this[symb] !== undefined) { // implies > 0
this[symb + "use"] = true;
res += '#' + this[symb + "nb"] + '=';
}
res += "#(";
for (var i = 0; i < this.length; i++) {
res += sc_genToWriteCircleString(this[i], symb);
if (i < this.length - 1) res += " ";
}
res += ")";
return res;
};
/* ------------------ print ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_print(s) {
if (arguments.length === 1) {
sc_display(s);
sc_newline();
}
else {
for (var i = 0; i < arguments.length; i++)
sc_display(arguments[i]);
sc_newline();
}
}
/* ------------------ format ---------------------------------------------------*/
/*** META ((export #t)) */
function sc_format(s, args) {
var len = s.length;
var p = new sc_StringOutputPort();
var i = 0, j = 1;
while( i < len ) {
var i2 = s.indexOf("~", i);
if (i2 == -1) {
p.appendJSString( s.substring( i, len ) );
return p.close();
} else {
if (i2 > i) {
if (i2 == (len - 1)) {
p.appendJSString(s.substring(i, len));
return p.close();
} else {
p.appendJSString(s.substring(i, i2));
i = i2;
}
}
switch(s.charCodeAt(i2 + 1)) {
case 65:
case 97:
// a
sc_display(arguments[j], p);
i += 2; j++;
break;
case 83:
case 115:
// s
sc_write(arguments[j], p);
i += 2; j++;
break;
case 86:
case 118:
// v
sc_display(arguments[j], p);
p.appendJSString("\n");
i += 2; j++;
break;
case 67:
case 99:
// c
p.appendJSString(String.fromCharCode(arguments[j]));
i += 2; j++;
break;
case 88:
case 120:
// x
p.appendJSString(arguments[j].toString(6));
i += 2; j++;
break;
case 79:
case 111:
// o
p.appendJSString(arguments[j].toString(8));
i += 2; j++;
break;
case 66:
case 98:
// b
p.appendJSString(arguments[j].toString(2));
i += 2; j++;
break;
case 37:
case 110:
// %, n
p.appendJSString("\n");
i += 2; break;
case 114:
// r
p.appendJSString("\r");
i += 2; break;
case 126:
// ~
p.appendJSString("~");
i += 2; break;
default:
sc_error( "format: illegal ~"
+ String.fromCharCode(s.charCodeAt(i2 + 1))
+ " sequence" );
return "";
}
}
}
return p.close();
}
/* ------------------ global ports ---------------------------------------------------*/
var SC_DEFAULT_IN = new sc_ErrorInputPort();
var SC_DEFAULT_OUT = new sc_ErrorOutputPort();
var SC_ERROR_OUT = new sc_ErrorOutputPort();
var sc_SYMBOL_PREFIX = "\u1E9C";
var sc_KEYWORD_PREFIX = "\u1E9D";
/*** META ((export #t)
(peephole (id))) */
function sc_jsstring2string(s) {
return s;
}
/*** META ((export #t)
(peephole (prefix "'\\u1E9C' +")))
*/
function sc_jsstring2symbol(s) {
return sc_SYMBOL_PREFIX + s;
}
/*** META ((export #t)
(peephole (id)))
*/
function sc_string2jsstring(s) {
return s;
}
/*** META ((export #t)
(peephole (symbol2jsstring_immutable)))
*/
function sc_symbol2jsstring(s) {
return s.slice(1);
}
/*** META ((export #t)
(peephole (postfix ".slice(1)")))
*/
function sc_keyword2jsstring(k) {
return k.slice(1);
}
/*** META ((export #t)
(peephole (prefix "'\\u1E9D' +")))
*/
function sc_jsstring2keyword(s) {
return sc_KEYWORD_PREFIX + s;
}
/*** META ((export #t)
(type bool))
*/
function sc_isKeyword(s) {
return (typeof s === "string") &&
(s.charAt(0) === sc_KEYWORD_PREFIX);
}
/*** META ((export #t)) */
var sc_gensym = function() {
var counter = 1000;
return function(sym) {
counter++;
if (!sym) sym = sc_SYMBOL_PREFIX;
return sym + "s" + counter + "~" + "^sC-GeNsYm ";
};
}();
/*** META ((export #t)
(type bool))
*/
function sc_isEqual(o1, o2) {
return ((o1 === o2) ||
(sc_isPair(o1) && sc_isPair(o2)
&& sc_isPairEqual(o1, o2, sc_isEqual)) ||
(sc_isVector(o1) && sc_isVector(o2)
&& sc_isVectorEqual(o1, o2, sc_isEqual)));
}
/*** META ((export number->symbol integer->symbol)) */
function sc_number2symbol(x, radix) {
return sc_SYMBOL_PREFIX + sc_number2jsstring(x, radix);
}
/*** META ((export number->string integer->string)) */
var sc_number2string = sc_number2jsstring;
/*** META ((export #t)) */
function sc_symbol2number(s, radix) {
return sc_jsstring2number(s.slice(1), radix);
}
/*** META ((export #t)) */
var sc_string2number = sc_jsstring2number;
/*** META ((export #t)
(peephole (prefix "+" s)))
;; peephole will only apply if no radix is given.
*/
function sc_string2integer(s, radix) {
if (!radix) return +s;
return parseInt(s, radix);
}
/*** META ((export #t)
(peephole (prefix "+")))
*/
function sc_string2real(s) {
return +s;
}
/*** META ((export #t)
(type bool))
*/
function sc_isSymbol(s) {
return (typeof s === "string") &&
(s.charAt(0) === sc_SYMBOL_PREFIX);
}
/*** META ((export #t)
(peephole (symbol2string_immutable)))
*/
function sc_symbol2string(s) {
return s.slice(1);
}
/*** META ((export #t)
(peephole (prefix "'\\u1E9C' +")))
*/
function sc_string2symbol(s) {
return sc_SYMBOL_PREFIX + s;
}
/*** META ((export symbol-append)
(peephole (symbolAppend_immutable)))
*/
function sc_symbolAppend() {
var res = sc_SYMBOL_PREFIX;
for (var i = 0; i < arguments.length; i++)
res += arguments[i].slice(1);
return res;
}
/*** META ((export #t)
(peephole (postfix ".val")))
*/
function sc_char2string(c) { return c.val; }
/*** META ((export #t)
(peephole (hole 1 "'\\u1E9C' + " c ".val")))
*/
function sc_char2symbol(c) { return sc_SYMBOL_PREFIX + c.val; }
/*** META ((export #t)
(type bool))
*/
function sc_isString(s) {
return (typeof s === "string") &&
(s.charAt(0) !== sc_SYMBOL_PREFIX);
}
/*** META ((export #t)) */
var sc_makeString = sc_makejsString;
/*** META ((export #t)) */
function sc_string() {
for (var i = 0; i < arguments.length; i++)
arguments[i] = arguments[i].val;
return "".concat.apply("", arguments);
}
/*** META ((export #t)
(peephole (postfix ".length")))
*/
function sc_stringLength(s) { return s.length; }
/*** META ((export #t)) */
function sc_stringRef(s, k) {
return new sc_Char(s.charAt(k));
}
/* there's no stringSet in the immutable version
function sc_stringSet(s, k, c)
*/
/*** META ((export string=?)
(type bool)
(peephole (hole 2 str1 " === " str2)))
*/
function sc_isStringEqual(s1, s2) {
return s1 === s2;
}
/*** META ((export string)
(type bool)
(peephole (hole 2 str1 " < " str2)))
*/
function sc_isStringLess(s1, s2) {
return s1 < s2;
}
/*** META ((export string>?)
(type bool)
(peephole (hole 2 str1 " > " str2)))
*/
function sc_isStringGreater(s1, s2) {
return s1 > s2;
}
/*** META ((export string<=?)
(type bool)
(peephole (hole 2 str1 " <= " str2)))
*/
function sc_isStringLessEqual(s1, s2) {
return s1 <= s2;
}
/*** META ((export string>=?)
(type bool)
(peephole (hole 2 str1 " >= " str2)))
*/
function sc_isStringGreaterEqual(s1, s2) {
return s1 >= s2;
}
/*** META ((export string-ci=?)
(type bool)
(peephole (hole 2 str1 ".toLowerCase() === " str2 ".toLowerCase()")))
*/
function sc_isStringCIEqual(s1, s2) {
return s1.toLowerCase() === s2.toLowerCase();
}
/*** META ((export string-ci)
(type bool)
(peephole (hole 2 str1 ".toLowerCase() < " str2 ".toLowerCase()")))
*/
function sc_isStringCILess(s1, s2) {
return s1.toLowerCase() < s2.toLowerCase();
}
/*** META ((export string-ci>?)
(type bool)
(peephole (hole 2 str1 ".toLowerCase() > " str2 ".toLowerCase()")))
*/
function sc_isStringCIGreater(s1, s2) {
return s1.toLowerCase() > s2.toLowerCase();
}
/*** META ((export string-ci<=?)
(type bool)
(peephole (hole 2 str1 ".toLowerCase() <= " str2 ".toLowerCase()")))
*/
function sc_isStringCILessEqual(s1, s2) {
return s1.toLowerCase() <= s2.toLowerCase();
}
/*** META ((export string-ci>=?)
(type bool)
(peephole (hole 2 str1 ".toLowerCase() >= " str2 ".toLowerCase()")))
*/
function sc_isStringCIGreaterEqual(s1, s2) {
return s1.toLowerCase() >= s2.toLowerCase();
}
/*** META ((export #t)
(peephole (hole 3 s ".substring(" start ", " end ")")))
*/
function sc_substring(s, start, end) {
return s.substring(start, end);
}
/*** META ((export #t))
*/
function sc_isSubstring_at(s1, s2, i) {
return s2 == s1.substring(i, i+ s2.length);
}
/*** META ((export #t)
(peephole (infix 0 #f "+" "''")))
*/
function sc_stringAppend() {
return "".concat.apply("", arguments);
}
/*** META ((export #t)) */
var sc_string2list = sc_jsstring2list;
/*** META ((export #t)) */
var sc_list2string = sc_list2jsstring;
/*** META ((export #t)
(peephole (id)))
*/
function sc_stringCopy(s) {
return s;
}
/* there's no string-fill in the immutable version
function sc_stringFill(s, c)
*/
/*** META ((export #t)
(peephole (postfix ".slice(1)")))
*/
function sc_keyword2string(o) {
return o.slice(1);
}
/*** META ((export #t)
(peephole (prefix "'\\u1E9D' +")))
*/
function sc_string2keyword(o) {
return sc_KEYWORD_PREFIX + o;
}
String.prototype.sc_toDisplayString = function() {
if (this.charAt(0) === sc_SYMBOL_PREFIX)
// TODO: care for symbols with spaces (escape-chars symbols).
return this.slice(1);
else if (this.charAt(0) === sc_KEYWORD_PREFIX)
return ":" + this.slice(1);
else
return this.toString();
};
String.prototype.sc_toWriteString = function() {
if (this.charAt(0) === sc_SYMBOL_PREFIX)
// TODO: care for symbols with spaces (escape-chars symbols).
return this.slice(1);
else if (this.charAt(0) === sc_KEYWORD_PREFIX)
return ":" + this.slice(1);
else
return '"' + sc_escapeWriteString(this) + '"';
};
/* Exported Variables */
var BgL_testzd2boyerzd2;
var BgL_nboyerzd2benchmarkzd2;
var BgL_setupzd2boyerzd2;
/* End Exports */
var translate_term_nboyer;
var translate_args_nboyer;
var untranslate_term_nboyer;
var BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer;
var BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer;
var translate_alist_nboyer;
var apply_subst_nboyer;
var apply_subst_lst_nboyer;
var tautologyp_nboyer;
var if_constructor_nboyer;
var rewrite_count_nboyer;
var rewrite_nboyer;
var rewrite_args_nboyer;
var unify_subst_nboyer;
var one_way_unify1_nboyer;
var false_term_nboyer;
var true_term_nboyer;
var trans_of_implies1_nboyer;
var is_term_equal_nboyer;
var is_term_member_nboyer;
var const_nboyer;
var sc_const_3_nboyer;
var sc_const_4_nboyer;
{
(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)))))));
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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))))))));
(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)))))))))));
BgL_nboyerzd2benchmarkzd2 = function() {
var args = null;
for (var sc_tmp = arguments.length - 1; sc_tmp >= 0; sc_tmp--) {
args = sc_cons(arguments[sc_tmp], args);
}
var n;
return ((n = ((args === null)?(0):(args.car))), (BgL_setupzd2boyerzd2()), (BgL_runzd2benchmarkzd2(("nboyer"+(sc_number2string(n))), (1), function() {
return (BgL_testzd2boyerzd2(n));
}, function(rewrites) {
if ((sc_isNumber(rewrites)))
switch (n) {
case (0):
return (rewrites===(95024));
break;
case (1):
return (rewrites===(591777));
break;
case (2):
return (rewrites===(1813975));
break;
case (3):
return (rewrites===(5375678));
break;
case (4):
return (rewrites===(16445406));
break;
case (5):
return (rewrites===(51507739));
break;
default:
return true;
break;
}
else
return false;
})));
};
BgL_setupzd2boyerzd2 = function() {
return true;
};
BgL_testzd2boyerzd2 = function() {
return true;
};
translate_term_nboyer = function(term) {
var lst;
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))))))))));
};
translate_args_nboyer = function(lst) {
var sc_lst_5;
var term;
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))))))))));
};
untranslate_term_nboyer = function(term) {
var optrOpnd;
var tail1131;
var L1127;
var falseHead1130;
var symbol_record;
if (!(term instanceof sc_Pair))
return term;
else
{
(falseHead1130 = (new sc_Pair(null, null)));
(L1127 = (term.cdr));
(tail1131 = falseHead1130);
while (!(L1127 === null)) {
{
(tail1131.cdr = (new sc_Pair((untranslate_term_nboyer((L1127.car))), null)));
(tail1131 = (tail1131.cdr));
(L1127 = (L1127.cdr));
}
}
(optrOpnd = (falseHead1130.cdr));
return (new sc_Pair(((symbol_record = (term.car)), (symbol_record[(0)])), optrOpnd));
}
};
BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer = function(sym) {
var r;
var x;
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)));
};
(BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer = null);
translate_alist_nboyer = function(alist) {
var sc_alist_6;
var term;
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))))))))));
};
apply_subst_nboyer = function(alist, term) {
var lst;
var temp_temp;
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))))))))));
};
apply_subst_lst_nboyer = function(alist, lst) {
var sc_lst_7;
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))))))))));
};
tautologyp_nboyer = function(sc_x_11, true_lst, false_lst) {
var tmp1125;
var x;
var tmp1126;
var sc_x_8;
var sc_tmp1125_9;
var sc_tmp1126_10;
var sc_x_11;
var true_lst;
var false_lst;
while (true) {
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))
return true;
else
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))
return false;
else
if (!(sc_x_11 instanceof sc_Pair))
return false;
else
if (((sc_x_11.car)===if_constructor_nboyer))
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))
(sc_x_11 = (sc_x_11.cdr.cdr.car));
else
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))
(sc_x_11 = (sc_x_11.cdr.cdr.cdr.car));
else
if (((tautologyp_nboyer((sc_x_11.cdr.cdr.car), (new sc_Pair((sc_x_11.cdr.car), true_lst)), false_lst))!== false))
{
(false_lst = (new sc_Pair((sc_x_11.cdr.car), false_lst)));
(sc_x_11 = (sc_x_11.cdr.cdr.cdr.car));
}
else
return false;
else
return false;
}
};
(if_constructor_nboyer = "\u1E9C*");
(rewrite_count_nboyer = (0));
rewrite_nboyer = function(term) {
var term2;
var sc_term_12;
var lst;
var symbol_record;
var sc_lst_13;
{
(++rewrite_count_nboyer);
if (!(term instanceof sc_Pair))
return term;
else
{
(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))))))))));
(lst = ((symbol_record = (term.car)), (symbol_record[(1)])));
while (true) {
if ((lst === null))
return sc_term_12;
else
if ((((term2 = ((lst.car).cdr.car)), (unify_subst_nboyer = null), (one_way_unify1_nboyer(sc_term_12, term2)))!== false))
return (rewrite_nboyer((apply_subst_nboyer(unify_subst_nboyer, ((lst.car).cdr.cdr.car)))));
else
(lst = (lst.cdr));
}
}
}
};
rewrite_args_nboyer = function(lst) {
var sc_lst_14;
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))))))))));
};
(unify_subst_nboyer = "\u1E9C*");
one_way_unify1_nboyer = function(term1, term2) {
var lst1;
var lst2;
var temp_temp;
if (!(term2 instanceof sc_Pair))
{
(temp_temp = (sc_assq(term2, unify_subst_nboyer)));
if ((temp_temp!== false))
return (is_term_equal_nboyer(term1, (temp_temp.cdr)));
else
if ((sc_isNumber(term2)))
return (sc_isEqual(term1, term2));
else
{
(unify_subst_nboyer = (new sc_Pair((new sc_Pair(term2, term1)), unify_subst_nboyer)));
return true;
}
}
else
if (!(term1 instanceof sc_Pair))
return false;
else
if (((term1.car)===(term2.car)))
{
(lst1 = (term1.cdr));
(lst2 = (term2.cdr));
while (true) {
if ((lst1 === null))
return (lst2 === null);
else
if ((lst2 === null))
return false;
else
if (((one_way_unify1_nboyer((lst1.car), (lst2.car)))!== false))
{
(lst1 = (lst1.cdr));
(lst2 = (lst2.cdr));
}
else
return false;
}
}
else
return false;
};
(false_term_nboyer = "\u1E9C*");
(true_term_nboyer = "\u1E9C*");
trans_of_implies1_nboyer = function(n) {
var sc_n_15;
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)))))))))));
};
is_term_equal_nboyer = function(x, y) {
var lst1;
var lst2;
var r2;
var r1;
if ((x instanceof sc_Pair))
if ((y instanceof sc_Pair))
if ((((r1 = (x.car)), (r2 = (y.car)), (r1===r2))!== false))
{
(lst1 = (x.cdr));
(lst2 = (y.cdr));
while (true) {
if ((lst1 === null))
return (lst2 === null);
else
if ((lst2 === null))
return false;
else
if (((is_term_equal_nboyer((lst1.car), (lst2.car)))!== false))
{
(lst1 = (lst1.cdr));
(lst2 = (lst2.cdr));
}
else
return false;
}
}
else
return false;
else
return false;
else
return (sc_isEqual(x, y));
};
is_term_member_nboyer = function(x, lst) {
var x;
var lst;
while (true) {
if ((lst === null))
return false;
else
if (((is_term_equal_nboyer(x, (lst.car)))!== false))
return true;
else
(lst = (lst.cdr));
}
};
BgL_setupzd2boyerzd2 = function() {
var symbol_record;
var value;
var BgL_sc_symbolzd2record_16zd2;
var sym;
var sc_sym_17;
var term;
var lst;
var sc_term_18;
var sc_term_19;
{
(BgL_sc_za2symbolzd2recordszd2alistza2_2z00_nboyer = null);
(if_constructor_nboyer = (BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer("\u1E9Cif")));
(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))))))));
(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))))))));
(lst = sc_const_3_nboyer);
while (!(lst === null)) {
{
(term = (lst.car));
if (((term instanceof sc_Pair)&&(((term.car)==="\u1E9Cequal")&&((term.cdr.car) instanceof sc_Pair))))
{
(sc_sym_17 = ((term.cdr.car).car));
(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)])))));
(symbol_record = (BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer(sc_sym_17)));
(symbol_record[(1)] = value);
}
else
(sc_error("ADD-LEMMA did not like term: ", term));
(lst = (lst.cdr));
}
}
return true;
}
};
BgL_testzd2boyerzd2 = function(n) {
var optrOpnd;
var term;
var sc_n_20;
var answer;
var sc_term_21;
var sc_term_22;
{
(rewrite_count_nboyer = (0));
(term = sc_const_4_nboyer);
(sc_n_20 = n);
while (!(sc_n_20=== 0)) {
{
(term = (sc_list("\u1E9Cor", term, (new sc_Pair("\u1E9Cf",null)))));
(--sc_n_20);
}
}
(sc_term_22 = term);
if (!(sc_term_22 instanceof sc_Pair))
(optrOpnd = sc_term_22);
else
(optrOpnd = (new sc_Pair((BgL_sc_symbolzd2ze3symbolzd2record_1ze3_nboyer((sc_term_22.car))), (translate_args_nboyer((sc_term_22.cdr))))));
(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)));
(answer = (tautologyp_nboyer((rewrite_nboyer(sc_term_21)), null, null)));
(sc_write(rewrite_count_nboyer));
(sc_display(" rewrites"));
(sc_newline());
if ((answer!== false))
return rewrite_count_nboyer;
else
return false;
}
};
}
/* Exported Variables */
var BgL_parsezd2ze3nbzd2treesze3;
var BgL_earleyzd2benchmarkzd2;
var BgL_parsezd2ze3parsedzf3zc2;
var test;
var BgL_parsezd2ze3treesz31;
var BgL_makezd2parserzd2;
/* End Exports */
var const_earley;
{
(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)));
BgL_makezd2parserzd2 = function(grammar, lexer) {
var i;
var parser_descr;
var def_loop;
var nb_nts;
var names;
var steps;
var predictors;
var enders;
var starters;
var nts;
var sc_names_1;
var sc_steps_2;
var sc_predictors_3;
var sc_enders_4;
var sc_starters_5;
var nb_confs;
var BgL_sc_defzd2loop_6zd2;
var BgL_sc_nbzd2nts_7zd2;
var sc_nts_8;
var BgL_sc_defzd2loop_9zd2;
var ind;
{
ind = function(nt, sc_nts_10) {
var i;
{
(i = ((sc_nts_10.length)-(1)));
while (true) {
if ((i>=(0)))
if ((sc_isEqual((sc_nts_10[i]), nt)))
return i;
else
(--i);
else
return false;
}
}
};
(sc_nts_8 = ((BgL_sc_defzd2loop_9zd2 = function(defs, sc_nts_11) {
var rule_loop;
var head;
var def;
return ((defs instanceof sc_Pair)?((def = (defs.car)), (head = (def.car)), (rule_loop = function(rules, sc_nts_12) {
var nt;
var l;
var sc_nts_13;
var rule;
if ((rules instanceof sc_Pair))
{
(rule = (rules.car));
(l = rule);
(sc_nts_13 = sc_nts_12);
while ((l instanceof sc_Pair)) {
{
(nt = (l.car));
(l = (l.cdr));
(sc_nts_13 = (((sc_member(nt, sc_nts_13))!== false)?sc_nts_13:(new sc_Pair(nt, sc_nts_13))));
}
}
return (rule_loop((rules.cdr), sc_nts_13));
}
else
return (BgL_sc_defzd2loop_9zd2((defs.cdr), sc_nts_12));
}), (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)))));
}), (BgL_sc_defzd2loop_9zd2(grammar, null))));
(BgL_sc_nbzd2nts_7zd2 = (sc_nts_8.length));
(nb_confs = (((BgL_sc_defzd2loop_6zd2 = function(defs, BgL_sc_nbzd2confs_14zd2) {
var rule_loop;
var def;
return ((defs instanceof sc_Pair)?((def = (defs.car)), (rule_loop = function(rules, BgL_sc_nbzd2confs_15zd2) {
var l;
var BgL_sc_nbzd2confs_16zd2;
var rule;
if ((rules instanceof sc_Pair))
{
(rule = (rules.car));
(l = rule);
(BgL_sc_nbzd2confs_16zd2 = BgL_sc_nbzd2confs_15zd2);
while ((l instanceof sc_Pair)) {
{
(l = (l.cdr));
(++BgL_sc_nbzd2confs_16zd2);
}
}
return (rule_loop((rules.cdr), (BgL_sc_nbzd2confs_16zd2+(1))));
}
else
return (BgL_sc_defzd2loop_6zd2((defs.cdr), BgL_sc_nbzd2confs_15zd2));
}), (rule_loop((def.cdr), BgL_sc_nbzd2confs_14zd2))):BgL_sc_nbzd2confs_14zd2);
}), (BgL_sc_defzd2loop_6zd2(grammar, (0))))+BgL_sc_nbzd2nts_7zd2));
(sc_starters_5 = (sc_makeVector(BgL_sc_nbzd2nts_7zd2, null)));
(sc_enders_4 = (sc_makeVector(BgL_sc_nbzd2nts_7zd2, null)));
(sc_predictors_3 = (sc_makeVector(BgL_sc_nbzd2nts_7zd2, null)));
(sc_steps_2 = (sc_makeVector(nb_confs, false)));
(sc_names_1 = (sc_makeVector(nb_confs, false)));
(nts = sc_nts_8);
(starters = sc_starters_5);
(enders = sc_enders_4);
(predictors = sc_predictors_3);
(steps = sc_steps_2);
(names = sc_names_1);
(nb_nts = (sc_nts_8.length));
(i = (nb_nts-(1)));
while ((i>=(0))) {
{
(sc_steps_2[i] = (i-nb_nts));
(sc_names_1[i] = (sc_list((sc_nts_8[i]), (0))));
(sc_enders_4[i] = (sc_list(i)));
(--i);
}
}
def_loop = function(defs, conf) {
var rule_loop;
var head;
var def;
return ((defs instanceof sc_Pair)?((def = (defs.car)), (head = (def.car)), (rule_loop = function(rules, conf, rule_num) {
var i;
var sc_i_17;
var nt;
var l;
var sc_conf_18;
var sc_i_19;
var rule;
if ((rules instanceof sc_Pair))
{
(rule = (rules.car));
(names[conf] = (sc_list(head, rule_num)));
(sc_i_19 = (ind(head, nts)));
(starters[sc_i_19] = (new sc_Pair(conf, (starters[sc_i_19]))));
(l = rule);
(sc_conf_18 = conf);
while ((l instanceof sc_Pair)) {
{
(nt = (l.car));
(steps[sc_conf_18] = (ind(nt, nts)));
(sc_i_17 = (ind(nt, nts)));
(predictors[sc_i_17] = (new sc_Pair(sc_conf_18, (predictors[sc_i_17]))));
(l = (l.cdr));
(++sc_conf_18);
}
}
(steps[sc_conf_18] = ((ind(head, nts))-nb_nts));
(i = (ind(head, nts)));
(enders[i] = (new sc_Pair(sc_conf_18, (enders[i]))));
return (rule_loop((rules.cdr), (sc_conf_18+(1)), (rule_num+(1))));
}
else
return (def_loop((defs.cdr), conf));
}), (rule_loop((def.cdr), conf, (1)))):undefined);
};
(def_loop(grammar, (sc_nts_8.length)));
(parser_descr = [lexer, sc_nts_8, sc_starters_5, sc_enders_4, sc_predictors_3, sc_steps_2, sc_names_1]);
return function(input) {
var optrOpnd;
var sc_optrOpnd_20;
var sc_optrOpnd_21;
var sc_optrOpnd_22;
var loop1;
var BgL_sc_stateza2_23za2;
var toks;
var BgL_sc_nbzd2nts_24zd2;
var sc_steps_25;
var sc_enders_26;
var state_num;
var BgL_sc_statesza2_27za2;
var states;
var i;
var conf;
var l;
var tok_nts;
var sc_i_28;
var sc_i_29;
var l1;
var l2;
var tok;
var tail1129;
var L1125;
var goal_enders;
var BgL_sc_statesza2_30za2;
var BgL_sc_nbzd2nts_31zd2;
var BgL_sc_nbzd2confs_32zd2;
var nb_toks;
var goal_starters;
var sc_states_33;
var BgL_sc_nbzd2confs_34zd2;
var BgL_sc_nbzd2toks_35zd2;
var sc_toks_36;
var falseHead1128;
var sc_names_37;
var sc_steps_38;
var sc_predictors_39;
var sc_enders_40;
var sc_starters_41;
var sc_nts_42;
var lexer;
var sc_ind_43;
var make_states;
var BgL_sc_confzd2setzd2getza2_44za2;
var conf_set_merge_new_bang;
var conf_set_adjoin;
var BgL_sc_confzd2setzd2adjoinza2_45za2;
var BgL_sc_confzd2setzd2adjoinza2za2_46z00;
var conf_set_union;
var forw;
var is_parsed;
var deriv_trees;
var BgL_sc_derivzd2treesza2_47z70;
var nb_deriv_trees;
var BgL_sc_nbzd2derivzd2treesza2_48za2;
{
sc_ind_43 = function(nt, sc_nts_49) {
var i;
{
(i = ((sc_nts_49.length)-(1)));
while (true) {
if ((i>=(0)))
if ((sc_isEqual((sc_nts_49[i]), nt)))
return i;
else
(--i);
else
return false;
}
}
};
make_states = function(BgL_sc_nbzd2toks_50zd2, BgL_sc_nbzd2confs_51zd2) {
var v;
var i;
var sc_states_52;
{
(sc_states_52 = (sc_makeVector((BgL_sc_nbzd2toks_50zd2+(1)), false)));
(i = BgL_sc_nbzd2toks_50zd2);
while ((i>=(0))) {
{
(v = (sc_makeVector((BgL_sc_nbzd2confs_51zd2+(1)), false)));
(v[(0)] = (-1));
(sc_states_52[i] = v);
(--i);
}
}
return sc_states_52;
}
};
BgL_sc_confzd2setzd2getza2_44za2 = function(state, BgL_sc_statezd2num_53zd2, sc_conf_54) {
var conf_set;
var BgL_sc_confzd2set_55zd2;
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)));
};
conf_set_merge_new_bang = function(conf_set) {
return ((conf_set[((conf_set[(1)])+(5))] = (conf_set[(4)])), (conf_set[(1)] = (conf_set[(3)])), (conf_set[(3)] = (-1)), (conf_set[(4)] = (-1)));
};
conf_set_adjoin = function(state, conf_set, sc_conf_56, i) {
var tail;
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));
};
BgL_sc_confzd2setzd2adjoinza2_45za2 = function(sc_states_57, BgL_sc_statezd2num_58zd2, l, i) {
var conf_set;
var sc_conf_59;
var l1;
var state;
{
(state = (sc_states_57[BgL_sc_statezd2num_58zd2]));
(l1 = l);
while ((l1 instanceof sc_Pair)) {
{
(sc_conf_59 = (l1.car));
(conf_set = (BgL_sc_confzd2setzd2getza2_44za2(state, BgL_sc_statezd2num_58zd2, sc_conf_59)));
if (((conf_set[(i+(5))])=== false))
{
(conf_set_adjoin(state, conf_set, sc_conf_59, i));
(l1 = (l1.cdr));
}
else
(l1 = (l1.cdr));
}
}
return undefined;
}
};
BgL_sc_confzd2setzd2adjoinza2za2_46z00 = function(sc_states_60, BgL_sc_statesza2_61za2, BgL_sc_statezd2num_62zd2, sc_conf_63, i) {
var BgL_sc_confzd2setza2_64z70;
var BgL_sc_stateza2_65za2;
var conf_set;
var state;
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));
};
conf_set_union = function(state, conf_set, sc_conf_66, other_set) {
var i;
{
(i = (other_set[(2)]));
while ((i>=(0))) {
if (((conf_set[(i+(5))])=== false))
{
(conf_set_adjoin(state, conf_set, sc_conf_66, i));
(i = (other_set[(i+(5))]));
}
else
(i = (other_set[(i+(5))]));
}
return undefined;
}
};
forw = function(sc_states_67, BgL_sc_statezd2num_68zd2, sc_starters_69, sc_enders_70, sc_predictors_71, sc_steps_72, sc_nts_73) {
var next_set;
var next;
var conf_set;
var ender;
var l;
var starter_set;
var starter;
var sc_l_74;
var sc_loop1_75;
var head;
var BgL_sc_confzd2set_76zd2;
var BgL_sc_statezd2num_77zd2;
var state;
var sc_states_78;
var preds;
var BgL_sc_confzd2set_79zd2;
var step;
var sc_conf_80;
var BgL_sc_nbzd2nts_81zd2;
var sc_state_82;
{
(sc_state_82 = (sc_states_67[BgL_sc_statezd2num_68zd2]));
(BgL_sc_nbzd2nts_81zd2 = (sc_nts_73.length));
while (true) {
{
(sc_conf_80 = (sc_state_82[(0)]));
if ((sc_conf_80>=(0)))
{
(step = (sc_steps_72[sc_conf_80]));
(BgL_sc_confzd2set_79zd2 = (sc_state_82[(sc_conf_80+(1))]));
(head = (BgL_sc_confzd2set_79zd2[(4)]));
(sc_state_82[(0)] = (BgL_sc_confzd2set_79zd2[(0)]));
(conf_set_merge_new_bang(BgL_sc_confzd2set_79zd2));
if ((step>=(0)))
{
(sc_l_74 = (sc_starters_69[step]));
while ((sc_l_74 instanceof sc_Pair)) {
{
(starter = (sc_l_74.car));
(starter_set = (BgL_sc_confzd2setzd2getza2_44za2(sc_state_82, BgL_sc_statezd2num_68zd2, starter)));
if (((starter_set[(BgL_sc_statezd2num_68zd2+(5))])=== false))
{
(conf_set_adjoin(sc_state_82, starter_set, starter, BgL_sc_statezd2num_68zd2));
(sc_l_74 = (sc_l_74.cdr));
}
else
(sc_l_74 = (sc_l_74.cdr));
}
}
(l = (sc_enders_70[step]));
while ((l instanceof sc_Pair)) {
{
(ender = (l.car));
if ((((conf_set = (sc_state_82[(ender+(1))])), ((conf_set!== false)?(conf_set[(BgL_sc_statezd2num_68zd2+(5))]):false))!== false))
{
(next = (sc_conf_80+(1)));
(next_set = (BgL_sc_confzd2setzd2getza2_44za2(sc_state_82, BgL_sc_statezd2num_68zd2, next)));
(conf_set_union(sc_state_82, next_set, next, BgL_sc_confzd2set_79zd2));
(l = (l.cdr));
}
else
(l = (l.cdr));
}
}
}
else
{
(preds = (sc_predictors_71[(step+BgL_sc_nbzd2nts_81zd2)]));
(sc_states_78 = sc_states_67);
(state = sc_state_82);
(BgL_sc_statezd2num_77zd2 = BgL_sc_statezd2num_68zd2);
(BgL_sc_confzd2set_76zd2 = BgL_sc_confzd2set_79zd2);
sc_loop1_75 = function(l) {
var sc_state_83;
var BgL_sc_nextzd2set_84zd2;
var sc_next_85;
var pred_set;
var i;
var pred;
if ((l instanceof sc_Pair))
{
(pred = (l.car));
(i = head);
while ((i>=(0))) {
{
(pred_set = ((sc_state_83 = (sc_states_78[i])), (sc_state_83[(pred+(1))])));
if ((pred_set!== false))
{
(sc_next_85 = (pred+(1)));
(BgL_sc_nextzd2set_84zd2 = (BgL_sc_confzd2setzd2getza2_44za2(state, BgL_sc_statezd2num_77zd2, sc_next_85)));
(conf_set_union(state, BgL_sc_nextzd2set_84zd2, sc_next_85, pred_set));
}
(i = (BgL_sc_confzd2set_76zd2[(i+(5))]));
}
}
return (sc_loop1_75((l.cdr)));
}
else
return undefined;
};
(sc_loop1_75(preds));
}
}
else
return undefined;
}
}
}
};
is_parsed = function(nt, i, j, sc_nts_86, sc_enders_87, sc_states_88) {
var conf_set;
var state;
var sc_conf_89;
var l;
var BgL_sc_ntza2_90za2;
{
(BgL_sc_ntza2_90za2 = (sc_ind_43(nt, sc_nts_86)));
if ((BgL_sc_ntza2_90za2!== false))
{
(sc_nts_86.length);
(l = (sc_enders_87[BgL_sc_ntza2_90za2]));
while (true) {
if ((l instanceof sc_Pair))
{
(sc_conf_89 = (l.car));
if ((((state = (sc_states_88[j])), (conf_set = (state[(sc_conf_89+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false))
return true;
else
(l = (l.cdr));
}
else
return false;
}
}
else
return false;
}
};
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) {
var sc_loop1_98;
var prev;
var name;
return ((name = (sc_names_94[sc_conf_91])), ((name!== false)?((sc_conf_91=(0)))
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)))
{
(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)));
(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)));
loop3 = function(l3, l2) {
var l4;
var sc_l2_100;
var ender_tree;
if ((l3 instanceof sc_Pair))
{
(ender_tree = (sc_list((l3.car))));
(l4 = prev_trees);
(sc_l2_100 = l2);
while ((l4 instanceof sc_Pair)) {
{
(sc_l2_100 = (new sc_Pair((sc_append((l4.car), ender_tree)), sc_l2_100)));
(l4 = (l4.cdr));
}
}
return (loop3((l3.cdr), sc_l2_100));
}
else
return (loop2((ender_set[(k+(5))]), l2));
};
return (loop3(ender_trees, l2));
}
else
(k = (ender_set[(k+(5))]));
else
return (sc_loop1_98((l1.cdr), l2));
}
};
return (loop2((ender_set[(2)]), l2));
}
else
(l1 = (l1.cdr));
}
else
return l2;
}
}), (sc_loop1_98((sc_enders_92[(sc_steps_93[prev])]), null)))));
};
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) {
var conf_set;
var state;
var sc_conf_107;
var l;
var trees;
var BgL_sc_nbzd2nts_108zd2;
var BgL_sc_ntza2_109za2;
{
(BgL_sc_ntza2_109za2 = (sc_ind_43(nt, sc_nts_101)));
if ((BgL_sc_ntza2_109za2!== false))
{
(BgL_sc_nbzd2nts_108zd2 = (sc_nts_101.length));
(l = (sc_enders_102[BgL_sc_ntza2_109za2]));
(trees = null);
while ((l instanceof sc_Pair)) {
{
(sc_conf_107 = (l.car));
if ((((state = (sc_states_106[j])), (conf_set = (state[(sc_conf_107+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false))
{
(l = (l.cdr));
(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)));
}
else
(l = (l.cdr));
}
}
return trees;
}
else
return false;
}
};
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) {
var sc_loop1_116;
var tmp1124;
var prev;
return ((prev = (sc_conf_110-(1))), ((((tmp1124 = (sc_conf_110=(0))) {
if (((k>=i)&&(((state = (sc_states_114[k])), (conf_set = (state[(prev+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false)))
{
(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)));
(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)));
(k = (ender_set[(k+(5))]));
(n +=(nb_prev_trees*nb_ender_trees));
}
else
(k = (ender_set[(k+(5))]));
}
return (sc_loop1_116((l.cdr), n));
}
else
(l = (l.cdr));
}
else
return sc_n_118;
}
}), (sc_loop1_116((sc_enders_111[(sc_steps_112[prev])]), (0))))));
};
BgL_sc_nbzd2derivzd2treesza2_48za2 = function(nt, i, j, sc_nts_119, sc_enders_120, sc_steps_121, sc_toks_122, sc_states_123) {
var conf_set;
var state;
var sc_conf_124;
var l;
var nb_trees;
var BgL_sc_nbzd2nts_125zd2;
var BgL_sc_ntza2_126za2;
{
(BgL_sc_ntza2_126za2 = (sc_ind_43(nt, sc_nts_119)));
if ((BgL_sc_ntza2_126za2!== false))
{
(BgL_sc_nbzd2nts_125zd2 = (sc_nts_119.length));
(l = (sc_enders_120[BgL_sc_ntza2_126za2]));
(nb_trees = (0));
while ((l instanceof sc_Pair)) {
{
(sc_conf_124 = (l.car));
if ((((state = (sc_states_123[j])), (conf_set = (state[(sc_conf_124+(1))])), ((conf_set!== false)?(conf_set[(i+(5))]):false))!== false))
{
(l = (l.cdr));
(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));
}
else
(l = (l.cdr));
}
}
return nb_trees;
}
else
return false;
}
};
(lexer = (parser_descr[(0)]));
(sc_nts_42 = (parser_descr[(1)]));
(sc_starters_41 = (parser_descr[(2)]));
(sc_enders_40 = (parser_descr[(3)]));
(sc_predictors_39 = (parser_descr[(4)]));
(sc_steps_38 = (parser_descr[(5)]));
(sc_names_37 = (parser_descr[(6)]));
(falseHead1128 = (new sc_Pair(null, null)));
(L1125 = (lexer(input)));
(tail1129 = falseHead1128);
while (!(L1125 === null)) {
{
(tok = (L1125.car));
(l1 = (tok.cdr));
(l2 = null);
while ((l1 instanceof sc_Pair)) {
{
(sc_i_29 = (sc_ind_43((l1.car), sc_nts_42)));
if ((sc_i_29!== false))
{
(l1 = (l1.cdr));
(l2 = (new sc_Pair(sc_i_29, l2)));
}
else
(l1 = (l1.cdr));
}
}
(sc_optrOpnd_22 = (new sc_Pair((tok.car), (sc_reverse(l2)))));
(sc_optrOpnd_21 = (new sc_Pair(sc_optrOpnd_22, null)));
(tail1129.cdr = sc_optrOpnd_21);
(tail1129 = (tail1129.cdr));
(L1125 = (L1125.cdr));
}
}
(sc_optrOpnd_20 = (falseHead1128.cdr));
(sc_toks_36 = (sc_list2vector(sc_optrOpnd_20)));
(BgL_sc_nbzd2toks_35zd2 = (sc_toks_36.length));
(BgL_sc_nbzd2confs_34zd2 = (sc_steps_38.length));
(sc_states_33 = (make_states(BgL_sc_nbzd2toks_35zd2, BgL_sc_nbzd2confs_34zd2)));
(goal_starters = (sc_starters_41[(0)]));
(BgL_sc_confzd2setzd2adjoinza2_45za2(sc_states_33, (0), goal_starters, (0)));
(forw(sc_states_33, (0), sc_starters_41, sc_enders_40, sc_predictors_39, sc_steps_38, sc_nts_42));
(sc_i_28 = (0));
while ((sc_i_28=(0))) {
{
(states = sc_states_33);
(BgL_sc_statesza2_27za2 = BgL_sc_statesza2_30za2);
(state_num = i);
(sc_enders_26 = sc_enders_40);
(sc_steps_25 = sc_steps_38);
(BgL_sc_nbzd2nts_24zd2 = BgL_sc_nbzd2nts_31zd2);
(toks = sc_toks_36);
(BgL_sc_stateza2_23za2 = (BgL_sc_statesza2_30za2[i]));
loop1 = function() {
var sc_loop1_127;
var prev;
var BgL_sc_statesza2_128za2;
var sc_states_129;
var j;
var i;
var sc_i_130;
var head;
var conf_set;
var sc_conf_131;
{
(sc_conf_131 = (BgL_sc_stateza2_23za2[(0)]));
if ((sc_conf_131>=(0)))
{
(conf_set = (BgL_sc_stateza2_23za2[(sc_conf_131+(1))]));
(head = (conf_set[(4)]));
(BgL_sc_stateza2_23za2[(0)] = (conf_set[(0)]));
(conf_set_merge_new_bang(conf_set));
(sc_i_130 = head);
while ((sc_i_130>=(0))) {
{
(i = sc_i_130);
(j = state_num);
(sc_states_129 = states);
(BgL_sc_statesza2_128za2 = BgL_sc_statesza2_27za2);
(prev = (sc_conf_131-(1)));
if (((sc_conf_131>=BgL_sc_nbzd2nts_24zd2)&&((sc_steps_25[prev])>=(0))))
{
sc_loop1_127 = function(l) {
var k;
var ender_set;
var state;
var ender;
var l;
while (true) {
if ((l instanceof sc_Pair))
{
(ender = (l.car));
(ender_set = ((state = (sc_states_129[j])), (state[(ender+(1))])));
if ((ender_set!== false))
{
(k = (ender_set[(2)]));
while ((k>=(0))) {
{
if ((k>=i))
if (((BgL_sc_confzd2setzd2adjoinza2za2_46z00(sc_states_129, BgL_sc_statesza2_128za2, k, prev, i))!== false))
(BgL_sc_confzd2setzd2adjoinza2za2_46z00(sc_states_129, BgL_sc_statesza2_128za2, j, ender, k));
(k = (ender_set[(k+(5))]));
}
}
return (sc_loop1_127((l.cdr)));
}
else
(l = (l.cdr));
}
else
return undefined;
}
};
(sc_loop1_127((sc_enders_26[(sc_steps_25[prev])])));
}
(sc_i_130 = (conf_set[(sc_i_130+(5))]));
}
}
return (loop1());
}
else
return undefined;
}
};
(loop1());
(--i);
}
}
(optrOpnd = BgL_sc_statesza2_30za2);
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];
}
};
}
};
BgL_parsezd2ze3parsedzf3zc2 = function(parse, nt, i, j) {
var is_parsed;
var states;
var enders;
var nts;
return ((nts = (parse[(0)])), (enders = (parse[(2)])), (states = (parse[(7)])), (is_parsed = (parse[(8)])), (is_parsed(nt, i, j, nts, enders, states)));
};
BgL_parsezd2ze3treesz31 = function(parse, nt, i, j) {
var BgL_sc_derivzd2treesza2_132z70;
var states;
var toks;
var names;
var steps;
var enders;
var nts;
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)));
};
BgL_parsezd2ze3nbzd2treesze3 = function(parse, nt, i, j) {
var BgL_sc_nbzd2derivzd2treesza2_133za2;
var states;
var toks;
var steps;
var enders;
var nts;
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)));
};
test = function(k) {
var x;
var p;
return ((p = (BgL_makezd2parserzd2(const_earley, function(l) {
var sc_x_134;
var tail1134;
var L1130;
var falseHead1133;
{
(falseHead1133 = (new sc_Pair(null, null)));
(tail1134 = falseHead1133);
(L1130 = l);
while (!(L1130 === null)) {
{
(tail1134.cdr = (new sc_Pair(((sc_x_134 = (L1130.car)), (sc_list(sc_x_134, sc_x_134))), null)));
(tail1134 = (tail1134.cdr));
(L1130 = (L1130.cdr));
}
}
return (falseHead1133.cdr);
}
}))), (x = (p((sc_vector2list((sc_makeVector(k, "\u1E9Ca"))))))), (sc_length((BgL_parsezd2ze3treesz31(x, "\u1E9Cs", (0), k)))));
};
BgL_earleyzd2benchmarkzd2 = function() {
var args = null;
for (var sc_tmp = arguments.length - 1; sc_tmp >= 0; sc_tmp--) {
args = sc_cons(arguments[sc_tmp], args);
}
var k;
return ((k = ((args === null)?(7):(args.car))), (BgL_runzd2benchmarkzd2("earley", (1), function() {
return (test(k));
}, function(result) {
return ((sc_display(result)), (sc_newline()), true);
})));
};
}
/************* END OF GENERATED CODE *************/
// Invoke this function to run a benchmark.
// The first argument is a string identifying the benchmark.
// The second argument is the number of times to run the benchmark.
// The third argument is a function that runs the benchmark.
// The fourth argument is a unary function that warns if the result
// returned by the benchmark is incorrect.
//
// Example:
// RunBenchmark("new Array()",
// 1,
// function () { new Array(1000000); }
// function (v) {
// return (v instanceof Array) && (v.length == 1000000);
// });
SC_DEFAULT_OUT = new sc_GenericOutputPort(function(s) {});
SC_ERROR_OUT = SC_DEFAULT_OUT;
function RunBenchmark(name, count, run, warn) {
for (var n = 0; n < count; ++n) {
result = run();
}
}
var BgL_runzd2benchmarkzd2 = RunBenchmark;
for (var i = 0; i < 4; ++i) {
BgL_earleyzd2benchmarkzd2();
BgL_nboyerzd2benchmarkzd2();
}
// The ray tracer code in this file is written by Adam Burmister. It
// is available in its original form from:
//
// http://labs.flog.nz.co/raytracer/
//
// It has been modified slightly by Google to work as a standalone
// benchmark, but the all the computational code remains
// untouched. This file also contains a copy of the Prototype
// JavaScript framework which is used by the ray tracer.
// Create dummy objects if we're not running in a browser.
if (typeof document == 'undefined') {
document = { };
window = { opera: null };
navigator = { userAgent: null, appVersion: "" };
}
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
/* Prototype JavaScript framework, version 1.5.0
* (c) 2005-2007 Sam Stephenson
*
* Prototype is freely distributable under the terms of an MIT-style license.
* For details, see the Prototype web site: http://prototype.conio.net/
*
/*--------------------------------------------------------------------------*/
//--------------------
var Prototype = {
Version: '1.5.0',
BrowserFeatures: {
XPath: !!document.evaluate
},
ScriptFragment: '(?:)((\n|\r|.)*?)(?:<\/script>)',
emptyFunction: function() {},
K: function(x) { return x }
}
var Class = {
create: function() {
return function() {
this.initialize.apply(this, arguments);
}
}
}
var Abstract = new Object();
Object.extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
return destination;
}
Object.extend(Object, {
inspect: function(object) {
try {
if (object === undefined) return 'undefined';
if (object === null) return 'null';
return object.inspect ? object.inspect() : object.toString();
} catch (e) {
if (e instanceof RangeError) return '...';
throw e;
}
},
keys: function(object) {
var keys = [];
for (var property in object)
keys.push(property);
return keys;
},
values: function(object) {
var values = [];
for (var property in object)
values.push(object[property]);
return values;
},
clone: function(object) {
return Object.extend({}, object);
}
});
Function.prototype.bind = function() {
var __method = this, args = $A(arguments), object = args.shift();
return function() {
return __method.apply(object, args.concat($A(arguments)));
}
}
Function.prototype.bindAsEventListener = function(object) {
var __method = this, args = $A(arguments), object = args.shift();
return function(event) {
return __method.apply(object, [( event || window.event)].concat(args).concat($A(arguments)));
}
}
Object.extend(Number.prototype, {
toColorPart: function() {
var digits = this.toString(16);
if (this < 16) return '0' + digits;
return digits;
},
succ: function() {
return this + 1;
},
times: function(iterator) {
$R(0, this, true).each(iterator);
return this;
}
});
var Try = {
these: function() {
var returnValue;
for (var i = 0, length = arguments.length; i < length; i++) {
var lambda = arguments[i];
try {
returnValue = lambda();
break;
} catch (e) {}
}
return returnValue;
}
}
/*--------------------------------------------------------------------------*/
var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
initialize: function(callback, frequency) {
this.callback = callback;
this.frequency = frequency;
this.currentlyExecuting = false;
this.registerCallback();
},
registerCallback: function() {
this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
},
stop: function() {
if (!this.timer) return;
clearInterval(this.timer);
this.timer = null;
},
onTimerEvent: function() {
if (!this.currentlyExecuting) {
try {
this.currentlyExecuting = true;
this.callback(this);
} finally {
this.currentlyExecuting = false;
}
}
}
}
String.interpret = function(value){
return value == null ? '' : String(value);
}
Object.extend(String.prototype, {
gsub: function(pattern, replacement) {
var result = '', source = this, match;
replacement = arguments.callee.prepareReplacement(replacement);
while (source.length > 0) {
if (match = source.match(pattern)) {
result += source.slice(0, match.index);
result += String.interpret(replacement(match));
source = source.slice(match.index + match[0].length);
} else {
result += source, source = '';
}
}
return result;
},
sub: function(pattern, replacement, count) {
replacement = this.gsub.prepareReplacement(replacement);
count = count === undefined ? 1 : count;
return this.gsub(pattern, function(match) {
if (--count < 0) return match[0];
return replacement(match);
});
},
scan: function(pattern, iterator) {
this.gsub(pattern, iterator);
return this;
},
truncate: function(length, truncation) {
length = length || 30;
truncation = truncation === undefined ? '...' : truncation;
return this.length > length ?
this.slice(0, length - truncation.length) + truncation : this;
},
strip: function() {
return this.replace(/^\s+/, '').replace(/\s+$/, '');
},
stripTags: function() {
return this.replace(/<\/?[^>]+>/gi, '');
},
stripScripts: function() {
return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
},
extractScripts: function() {
var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
return (this.match(matchAll) || []).map(function(scriptTag) {
return (scriptTag.match(matchOne) || ['', ''])[1];
});
},
evalScripts: function() {
return this.extractScripts().map(function(script) { return eval(script) });
},
escapeHTML: function() {
var div = document.createElement('div');
var text = document.createTextNode(this);
div.appendChild(text);
return div.innerHTML;
},
unescapeHTML: function() {
var div = document.createElement('div');
div.innerHTML = this.stripTags();
return div.childNodes[0] ? (div.childNodes.length > 1 ?
$A(div.childNodes).inject('',function(memo,node){ return memo+node.nodeValue }) :
div.childNodes[0].nodeValue) : '';
},
toQueryParams: function(separator) {
var match = this.strip().match(/([^?#]*)(#.*)?$/);
if (!match) return {};
return match[1].split(separator || '&').inject({}, function(hash, pair) {
if ((pair = pair.split('='))[0]) {
var name = decodeURIComponent(pair[0]);
var value = pair[1] ? decodeURIComponent(pair[1]) : undefined;
if (hash[name] !== undefined) {
if (hash[name].constructor != Array)
hash[name] = [hash[name]];
if (value) hash[name].push(value);
}
else hash[name] = value;
}
return hash;
});
},
toArray: function() {
return this.split('');
},
succ: function() {
return this.slice(0, this.length - 1) +
String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
},
camelize: function() {
var parts = this.split('-'), len = parts.length;
if (len == 1) return parts[0];
var camelized = this.charAt(0) == '-'
? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
: parts[0];
for (var i = 1; i < len; i++)
camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
return camelized;
},
capitalize: function(){
return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
},
underscore: function() {
return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
},
dasherize: function() {
return this.gsub(/_/,'-');
},
inspect: function(useDoubleQuotes) {
var escapedString = this.replace(/\\/g, '\\\\');
if (useDoubleQuotes)
return '"' + escapedString.replace(/"/g, '\\"') + '"';
else
return "'" + escapedString.replace(/'/g, '\\\'') + "'";
}
});
String.prototype.gsub.prepareReplacement = function(replacement) {
if (typeof replacement == 'function') return replacement;
var template = new Template(replacement);
return function(match) { return template.evaluate(match) };
}
String.prototype.parseQuery = String.prototype.toQueryParams;
var Template = Class.create();
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype = {
initialize: function(template, pattern) {
this.template = template.toString();
this.pattern = pattern || Template.Pattern;
},
evaluate: function(object) {
return this.template.gsub(this.pattern, function(match) {
var before = match[1];
if (before == '\\') return match[2];
return before + String.interpret(object[match[3]]);
});
}
}
var $break = new Object();
var $continue = new Object();
var Enumerable = {
each: function(iterator) {
var index = 0;
try {
this._each(function(value) {
try {
iterator(value, index++);
} catch (e) {
if (e != $continue) throw e;
}
});
} catch (e) {
if (e != $break) throw e;
}
return this;
},
eachSlice: function(number, iterator) {
var index = -number, slices = [], array = this.toArray();
while ((index += number) < array.length)
slices.push(array.slice(index, index+number));
return slices.map(iterator);
},
all: function(iterator) {
var result = true;
this.each(function(value, index) {
result = result && !!(iterator || Prototype.K)(value, index);
if (!result) throw $break;
});
return result;
},
any: function(iterator) {
var result = false;
this.each(function(value, index) {
if (result = !!(iterator || Prototype.K)(value, index))
throw $break;
});
return result;
},
collect: function(iterator) {
var results = [];
this.each(function(value, index) {
results.push((iterator || Prototype.K)(value, index));
});
return results;
},
detect: function(iterator) {
var result;
this.each(function(value, index) {
if (iterator(value, index)) {
result = value;
throw $break;
}
});
return result;
},
findAll: function(iterator) {
var results = [];
this.each(function(value, index) {
if (iterator(value, index))
results.push(value);
});
return results;
},
grep: function(pattern, iterator) {
var results = [];
this.each(function(value, index) {
var stringValue = value.toString();
if (stringValue.match(pattern))
results.push((iterator || Prototype.K)(value, index));
})
return results;
},
include: function(object) {
var found = false;
this.each(function(value) {
if (value == object) {
found = true;
throw $break;
}
});
return found;
},
inGroupsOf: function(number, fillWith) {
fillWith = fillWith === undefined ? null : fillWith;
return this.eachSlice(number, function(slice) {
while(slice.length < number) slice.push(fillWith);
return slice;
});
},
inject: function(memo, iterator) {
this.each(function(value, index) {
memo = iterator(memo, value, index);
});
return memo;
},
invoke: function(method) {
var args = $A(arguments).slice(1);
return this.map(function(value) {
return value[method].apply(value, args);
});
},
max: function(iterator) {
var result;
this.each(function(value, index) {
value = (iterator || Prototype.K)(value, index);
if (result == undefined || value >= result)
result = value;
});
return result;
},
min: function(iterator) {
var result;
this.each(function(value, index) {
value = (iterator || Prototype.K)(value, index);
if (result == undefined || value < result)
result = value;
});
return result;
},
partition: function(iterator) {
var trues = [], falses = [];
this.each(function(value, index) {
((iterator || Prototype.K)(value, index) ?
trues : falses).push(value);
});
return [trues, falses];
},
pluck: function(property) {
var results = [];
this.each(function(value, index) {
results.push(value[property]);
});
return results;
},
reject: function(iterator) {
var results = [];
this.each(function(value, index) {
if (!iterator(value, index))
results.push(value);
});
return results;
},
sortBy: function(iterator) {
return this.map(function(value, index) {
return {value: value, criteria: iterator(value, index)};
}).sort(function(left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
}).pluck('value');
},
toArray: function() {
return this.map();
},
zip: function() {
var iterator = Prototype.K, args = $A(arguments);
if (typeof args.last() == 'function')
iterator = args.pop();
var collections = [this].concat(args).map($A);
return this.map(function(value, index) {
return iterator(collections.pluck(index));
});
},
size: function() {
return this.toArray().length;
},
inspect: function() {
return '#';
}
}
Object.extend(Enumerable, {
map: Enumerable.collect,
find: Enumerable.detect,
select: Enumerable.findAll,
member: Enumerable.include,
entries: Enumerable.toArray
});
var $A = Array.from = function(iterable) {
if (!iterable) return [];
if (iterable.toArray) {
return iterable.toArray();
} else {
var results = [];
for (var i = 0, length = iterable.length; i < length; i++)
results.push(iterable[i]);
return results;
}
}
Object.extend(Array.prototype, Enumerable);
if (!Array.prototype._reverse)
Array.prototype._reverse = Array.prototype.reverse;
Object.extend(Array.prototype, {
_each: function(iterator) {
for (var i = 0, length = this.length; i < length; i++)
iterator(this[i]);
},
clear: function() {
this.length = 0;
return this;
},
first: function() {
return this[0];
},
last: function() {
return this[this.length - 1];
},
compact: function() {
return this.select(function(value) {
return value != null;
});
},
flatten: function() {
return this.inject([], function(array, value) {
return array.concat(value && value.constructor == Array ?
value.flatten() : [value]);
});
},
without: function() {
var values = $A(arguments);
return this.select(function(value) {
return !values.include(value);
});
},
indexOf: function(object) {
for (var i = 0, length = this.length; i < length; i++)
if (this[i] == object) return i;
return -1;
},
reverse: function(inline) {
return (inline !== false ? this : this.toArray())._reverse();
},
reduce: function() {
return this.length > 1 ? this : this[0];
},
uniq: function() {
return this.inject([], function(array, value) {
return array.include(value) ? array : array.concat([value]);
});
},
clone: function() {
return [].concat(this);
},
size: function() {
return this.length;
},
inspect: function() {
return '[' + this.map(Object.inspect).join(', ') + ']';
}
});
Array.prototype.toArray = Array.prototype.clone;
function $w(string){
string = string.strip();
return string ? string.split(/\s+/) : [];
}
if(window.opera){
Array.prototype.concat = function(){
var array = [];
for(var i = 0, length = this.length; i < length; i++) array.push(this[i]);
for(var i = 0, length = arguments.length; i < length; i++) {
if(arguments[i].constructor == Array) {
for(var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
array.push(arguments[i][j]);
} else {
array.push(arguments[i]);
}
}
return array;
}
}
var Hash = function(obj) {
Object.extend(this, obj || {});
};
Object.extend(Hash, {
toQueryString: function(obj) {
var parts = [];
this.prototype._each.call(obj, function(pair) {
if (!pair.key) return;
if (pair.value && pair.value.constructor == Array) {
var values = pair.value.compact();
if (values.length < 2) pair.value = values.reduce();
else {
key = encodeURIComponent(pair.key);
values.each(function(value) {
value = value != undefined ? encodeURIComponent(value) : '';
parts.push(key + '=' + encodeURIComponent(value));
});
return;
}
}
if (pair.value == undefined) pair[1] = '';
parts.push(pair.map(encodeURIComponent).join('='));
});
return parts.join('&');
}
});
Object.extend(Hash.prototype, Enumerable);
Object.extend(Hash.prototype, {
_each: function(iterator) {
for (var key in this) {
var value = this[key];
if (value && value == Hash.prototype[key]) continue;
var pair = [key, value];
pair.key = key;
pair.value = value;
iterator(pair);
}
},
keys: function() {
return this.pluck('key');
},
values: function() {
return this.pluck('value');
},
merge: function(hash) {
return $H(hash).inject(this, function(mergedHash, pair) {
mergedHash[pair.key] = pair.value;
return mergedHash;
});
},
remove: function() {
var result;
for(var i = 0, length = arguments.length; i < length; i++) {
var value = this[arguments[i]];
if (value !== undefined){
if (result === undefined) result = value;
else {
if (result.constructor != Array) result = [result];
result.push(value)
}
}
delete this[arguments[i]];
}
return result;
},
toQueryString: function() {
return Hash.toQueryString(this);
},
inspect: function() {
return '#';
}
});
function $H(object) {
if (object && object.constructor == Hash) return object;
return new Hash(object);
};
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
initialize: function(start, end, exclusive) {
this.start = start;
this.end = end;
this.exclusive = exclusive;
},
_each: function(iterator) {
var value = this.start;
while (this.include(value)) {
iterator(value);
value = value.succ();
}
},
include: function(value) {
if (value < this.start)
return false;
if (this.exclusive)
return value < this.end;
return value <= this.end;
}
});
var $R = function(start, end, exclusive) {
return new ObjectRange(start, end, exclusive);
}
var Ajax = {
getTransport: function() {
return Try.these(
function() {return new XMLHttpRequest()},
function() {return new ActiveXObject('Msxml2.XMLHTTP')},
function() {return new ActiveXObject('Microsoft.XMLHTTP')}
) || false;
},
activeRequestCount: 0
}
Ajax.Responders = {
responders: [],
_each: function(iterator) {
this.responders._each(iterator);
},
register: function(responder) {
if (!this.include(responder))
this.responders.push(responder);
},
unregister: function(responder) {
this.responders = this.responders.without(responder);
},
dispatch: function(callback, request, transport, json) {
this.each(function(responder) {
if (typeof responder[callback] == 'function') {
try {
responder[callback].apply(responder, [request, transport, json]);
} catch (e) {}
}
});
}
};
Object.extend(Ajax.Responders, Enumerable);
Ajax.Responders.register({
onCreate: function() {
Ajax.activeRequestCount++;
},
onComplete: function() {
Ajax.activeRequestCount--;
}
});
Ajax.Base = function() {};
Ajax.Base.prototype = {
setOptions: function(options) {
this.options = {
method: 'post',
asynchronous: true,
contentType: 'application/x-www-form-urlencoded',
encoding: 'UTF-8',
parameters: ''
}
Object.extend(this.options, options || {});
this.options.method = this.options.method.toLowerCase();
if (typeof this.options.parameters == 'string')
this.options.parameters = this.options.parameters.toQueryParams();
}
}
Ajax.Request = Class.create();
Ajax.Request.Events =
['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
_complete: false,
initialize: function(url, options) {
this.transport = Ajax.getTransport();
this.setOptions(options);
this.request(url);
},
request: function(url) {
this.url = url;
this.method = this.options.method;
var params = this.options.parameters;
if (!['get', 'post'].include(this.method)) {
// simulate other verbs over post
params['_method'] = this.method;
this.method = 'post';
}
params = Hash.toQueryString(params);
if (params && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='
// when GET, append parameters to URL
if (this.method == 'get' && params)
this.url += (this.url.indexOf('?') > -1 ? '&' : '?') + params;
try {
Ajax.Responders.dispatch('onCreate', this, this.transport);
this.transport.open(this.method.toUpperCase(), this.url,
this.options.asynchronous);
if (this.options.asynchronous)
setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
this.transport.onreadystatechange = this.onStateChange.bind(this);
this.setRequestHeaders();
var body = this.method == 'post' ? (this.options.postBody || params) : null;
this.transport.send(body);
/* Force Firefox to handle ready state 4 for synchronous requests */
if (!this.options.asynchronous && this.transport.overrideMimeType)
this.onStateChange();
}
catch (e) {
this.dispatchException(e);
}
},
onStateChange: function() {
var readyState = this.transport.readyState;
if (readyState > 1 && !((readyState == 4) && this._complete))
this.respondToReadyState(this.transport.readyState);
},
setRequestHeaders: function() {
var headers = {
'X-Requested-With': 'XMLHttpRequest',
'X-Prototype-Version': Prototype.Version,
'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
};
if (this.method == 'post') {
headers['Content-type'] = this.options.contentType +
(this.options.encoding ? '; charset=' + this.options.encoding : '');
/* Force "Connection: close" for older Mozilla browsers to work
* around a bug where XMLHttpRequest sends an incorrect
* Content-length header. See Mozilla Bugzilla #246651.
*/
if (this.transport.overrideMimeType &&
(navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
headers['Connection'] = 'close';
}
// user-defined headers
if (typeof this.options.requestHeaders == 'object') {
var extras = this.options.requestHeaders;
if (typeof extras.push == 'function')
for (var i = 0, length = extras.length; i < length; i += 2)
headers[extras[i]] = extras[i+1];
else
$H(extras).each(function(pair) { headers[pair.key] = pair.value });
}
for (var name in headers)
this.transport.setRequestHeader(name, headers[name]);
},
success: function() {
return !this.transport.status
|| (this.transport.status >= 200 && this.transport.status < 300);
},
respondToReadyState: function(readyState) {
var state = Ajax.Request.Events[readyState];
var transport = this.transport, json = this.evalJSON();
if (state == 'Complete') {
try {
this._complete = true;
(this.options['on' + this.transport.status]
|| this.options['on' + (this.success() ? 'Success' : 'Failure')]
|| Prototype.emptyFunction)(transport, json);
} catch (e) {
this.dispatchException(e);
}
if ((this.getHeader('Content-type') || 'text/javascript').strip().
match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
this.evalResponse();
}
try {
(this.options['on' + state] || Prototype.emptyFunction)(transport, json);
Ajax.Responders.dispatch('on' + state, this, transport, json);
} catch (e) {
this.dispatchException(e);
}
if (state == 'Complete') {
// avoid memory leak in MSIE: clean up
this.transport.onreadystatechange = Prototype.emptyFunction;
}
},
getHeader: function(name) {
try {
return this.transport.getResponseHeader(name);
} catch (e) { return null }
},
evalJSON: function() {
try {
var json = this.getHeader('X-JSON');
return json ? eval('(' + json + ')') : null;
} catch (e) { return null }
},
evalResponse: function() {
try {
return eval(this.transport.responseText);
} catch (e) {
this.dispatchException(e);
}
},
dispatchException: function(exception) {
(this.options.onException || Prototype.emptyFunction)(this, exception);
Ajax.Responders.dispatch('onException', this, exception);
}
});
Ajax.Updater = Class.create();
Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
initialize: function(container, url, options) {
this.container = {
success: (container.success || container),
failure: (container.failure || (container.success ? null : container))
}
this.transport = Ajax.getTransport();
this.setOptions(options);
var onComplete = this.options.onComplete || Prototype.emptyFunction;
this.options.onComplete = (function(transport, param) {
this.updateContent();
onComplete(transport, param);
}).bind(this);
this.request(url);
},
updateContent: function() {
var receiver = this.container[this.success() ? 'success' : 'failure'];
var response = this.transport.responseText;
if (!this.options.evalScripts) response = response.stripScripts();
if (receiver = $(receiver)) {
if (this.options.insertion)
new this.options.insertion(receiver, response);
else
receiver.update(response);
}
if (this.success()) {
if (this.onComplete)
setTimeout(this.onComplete.bind(this), 10);
}
}
});
Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
initialize: function(container, url, options) {
this.setOptions(options);
this.onComplete = this.options.onComplete;
this.frequency = (this.options.frequency || 2);
this.decay = (this.options.decay || 1);
this.updater = {};
this.container = container;
this.url = url;
this.start();
},
start: function() {
this.options.onComplete = this.updateComplete.bind(this);
this.onTimerEvent();
},
stop: function() {
this.updater.options.onComplete = undefined;
clearTimeout(this.timer);
(this.onComplete || Prototype.emptyFunction).apply(this, arguments);
},
updateComplete: function(request) {
if (this.options.decay) {
this.decay = (request.responseText == this.lastText ?
this.decay * this.options.decay : 1);
this.lastText = request.responseText;
}
this.timer = setTimeout(this.onTimerEvent.bind(this),
this.decay * this.frequency * 1000);
},
onTimerEvent: function() {
this.updater = new Ajax.Updater(this.container, this.url, this.options);
}
});
function $(element) {
if (arguments.length > 1) {
for (var i = 0, elements = [], length = arguments.length; i < length; i++)
elements.push($(arguments[i]));
return elements;
}
if (typeof element == 'string')
element = document.getElementById(element);
return Element.extend(element);
}
if (Prototype.BrowserFeatures.XPath) {
document._getElementsByXPath = function(expression, parentElement) {
var results = [];
var query = document.evaluate(expression, $(parentElement) || document,
null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for (var i = 0, length = query.snapshotLength; i < length; i++)
results.push(query.snapshotItem(i));
return results;
};
}
document.getElementsByClassName = function(className, parentElement) {
if (Prototype.BrowserFeatures.XPath) {
var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
return document._getElementsByXPath(q, parentElement);
} else {
var children = ($(parentElement) || document.body).getElementsByTagName('*');
var elements = [], child;
for (var i = 0, length = children.length; i < length; i++) {
child = children[i];
if (Element.hasClassName(child, className))
elements.push(Element.extend(child));
}
return elements;
}
};
/*--------------------------------------------------------------------------*/
if (!window.Element)
var Element = new Object();
Element.extend = function(element) {
if (!element || _nativeExtensions || element.nodeType == 3) return element;
if (!element._extended && element.tagName && element != window) {
var methods = Object.clone(Element.Methods), cache = Element.extend.cache;
if (element.tagName == 'FORM')
Object.extend(methods, Form.Methods);
if (['INPUT', 'TEXTAREA', 'SELECT'].include(element.tagName))
Object.extend(methods, Form.Element.Methods);
Object.extend(methods, Element.Methods.Simulated);
for (var property in methods) {
var value = methods[property];
if (typeof value == 'function' && !(property in element))
element[property] = cache.findOrStore(value);
}
}
element._extended = true;
return element;
};
Element.extend.cache = {
findOrStore: function(value) {
return this[value] = this[value] || function() {
return value.apply(null, [this].concat($A(arguments)));
}
}
};
Element.Methods = {
visible: function(element) {
return $(element).style.display != 'none';
},
toggle: function(element) {
element = $(element);
Element[Element.visible(element) ? 'hide' : 'show'](element);
return element;
},
hide: function(element) {
$(element).style.display = 'none';
return element;
},
show: function(element) {
$(element).style.display = '';
return element;
},
remove: function(element) {
element = $(element);
element.parentNode.removeChild(element);
return element;
},
update: function(element, html) {
html = typeof html == 'undefined' ? '' : html.toString();
$(element).innerHTML = html.stripScripts();
setTimeout(function() {html.evalScripts()}, 10);
return element;
},
replace: function(element, html) {
element = $(element);
html = typeof html == 'undefined' ? '' : html.toString();
if (element.outerHTML) {
element.outerHTML = html.stripScripts();
} else {
var range = element.ownerDocument.createRange();
range.selectNodeContents(element);
element.parentNode.replaceChild(
range.createContextualFragment(html.stripScripts()), element);
}
setTimeout(function() {html.evalScripts()}, 10);
return element;
},
inspect: function(element) {
element = $(element);
var result = '<' + element.tagName.toLowerCase();
$H({'id': 'id', 'className': 'class'}).each(function(pair) {
var property = pair.first(), attribute = pair.last();
var value = (element[property] || '').toString();
if (value) result += ' ' + attribute + '=' + value.inspect(true);
});
return result + '>';
},
recursivelyCollect: function(element, property) {
element = $(element);
var elements = [];
while (element = element[property])
if (element.nodeType == 1)
elements.push(Element.extend(element));
return elements;
},
ancestors: function(element) {
return $(element).recursivelyCollect('parentNode');
},
descendants: function(element) {
return $A($(element).getElementsByTagName('*'));
},
immediateDescendants: function(element) {
if (!(element = $(element).firstChild)) return [];
while (element && element.nodeType != 1) element = element.nextSibling;
if (element) return [element].concat($(element).nextSiblings());
return [];
},
previousSiblings: function(element) {
return $(element).recursivelyCollect('previousSibling');
},
nextSiblings: function(element) {
return $(element).recursivelyCollect('nextSibling');
},
siblings: function(element) {
element = $(element);
return element.previousSiblings().reverse().concat(element.nextSiblings());
},
match: function(element, selector) {
if (typeof selector == 'string')
selector = new Selector(selector);
return selector.match($(element));
},
up: function(element, expression, index) {
return Selector.findElement($(element).ancestors(), expression, index);
},
down: function(element, expression, index) {
return Selector.findElement($(element).descendants(), expression, index);
},
previous: function(element, expression, index) {
return Selector.findElement($(element).previousSiblings(), expression, index);
},
next: function(element, expression, index) {
return Selector.findElement($(element).nextSiblings(), expression, index);
},
getElementsBySelector: function() {
var args = $A(arguments), element = $(args.shift());
return Selector.findChildElements(element, args);
},
getElementsByClassName: function(element, className) {
return document.getElementsByClassName(className, element);
},
readAttribute: function(element, name) {
element = $(element);
if (document.all && !window.opera) {
var t = Element._attributeTranslations;
if (t.values[name]) return t.values[name](element, name);
if (t.names[name]) name = t.names[name];
var attribute = element.attributes[name];
if(attribute) return attribute.nodeValue;
}
return element.getAttribute(name);
},
getHeight: function(element) {
return $(element).getDimensions().height;
},
getWidth: function(element) {
return $(element).getDimensions().width;
},
classNames: function(element) {
return new Element.ClassNames(element);
},
hasClassName: function(element, className) {
if (!(element = $(element))) return;
var elementClassName = element.className;
if (elementClassName.length == 0) return false;
if (elementClassName == className ||
elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
return true;
return false;
},
addClassName: function(element, className) {
if (!(element = $(element))) return;
Element.classNames(element).add(className);
return element;
},
removeClassName: function(element, className) {
if (!(element = $(element))) return;
Element.classNames(element).remove(className);
return element;
},
toggleClassName: function(element, className) {
if (!(element = $(element))) return;
Element.classNames(element)[element.hasClassName(className) ? 'remove' : 'add'](className);
return element;
},
observe: function() {
Event.observe.apply(Event, arguments);
return $A(arguments).first();
},
stopObserving: function() {
Event.stopObserving.apply(Event, arguments);
return $A(arguments).first();
},
// removes whitespace-only text node children
cleanWhitespace: function(element) {
element = $(element);
var node = element.firstChild;
while (node) {
var nextNode = node.nextSibling;
if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
element.removeChild(node);
node = nextNode;
}
return element;
},
empty: function(element) {
return $(element).innerHTML.match(/^\s*$/);
},
descendantOf: function(element, ancestor) {
element = $(element), ancestor = $(ancestor);
while (element = element.parentNode)
if (element == ancestor) return true;
return false;
},
scrollTo: function(element) {
element = $(element);
var pos = Position.cumulativeOffset(element);
window.scrollTo(pos[0], pos[1]);
return element;
},
getStyle: function(element, style) {
element = $(element);
if (['float','cssFloat'].include(style))
style = (typeof element.style.styleFloat != 'undefined' ? 'styleFloat' : 'cssFloat');
style = style.camelize();
var value = element.style[style];
if (!value) {
if (document.defaultView && document.defaultView.getComputedStyle) {
var css = document.defaultView.getComputedStyle(element, null);
value = css ? css[style] : null;
} else if (element.currentStyle) {
value = element.currentStyle[style];
}
}
if((value == 'auto') && ['width','height'].include(style) && (element.getStyle('display') != 'none'))
value = element['offset'+style.capitalize()] + 'px';
if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
if (Element.getStyle(element, 'position') == 'static') value = 'auto';
if(style == 'opacity') {
if(value) return parseFloat(value);
if(value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
if(value[1]) return parseFloat(value[1]) / 100;
return 1.0;
}
return value == 'auto' ? null : value;
},
setStyle: function(element, style) {
element = $(element);
for (var name in style) {
var value = style[name];
if(name == 'opacity') {
if (value == 1) {
value = (/Gecko/.test(navigator.userAgent) &&
!/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 0.999999 : 1.0;
if(/MSIE/.test(navigator.userAgent) && !window.opera)
element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
} else if(value == '') {
if(/MSIE/.test(navigator.userAgent) && !window.opera)
element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
} else {
if(value < 0.00001) value = 0;
if(/MSIE/.test(navigator.userAgent) && !window.opera)
element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
'alpha(opacity='+value*100+')';
}
} else if(['float','cssFloat'].include(name)) name = (typeof element.style.styleFloat != 'undefined') ? 'styleFloat' : 'cssFloat';
element.style[name.camelize()] = value;
}
return element;
},
getDimensions: function(element) {
element = $(element);
var display = $(element).getStyle('display');
if (display != 'none' && display != null) // Safari bug
return {width: element.offsetWidth, height: element.offsetHeight};
// All *Width and *Height properties give 0 on elements with display none,
// so enable the element temporarily
var els = element.style;
var originalVisibility = els.visibility;
var originalPosition = els.position;
var originalDisplay = els.display;
els.visibility = 'hidden';
els.position = 'absolute';
els.display = 'block';
var originalWidth = element.clientWidth;
var originalHeight = element.clientHeight;
els.display = originalDisplay;
els.position = originalPosition;
els.visibility = originalVisibility;
return {width: originalWidth, height: originalHeight};
},
makePositioned: function(element) {
element = $(element);
var pos = Element.getStyle(element, 'position');
if (pos == 'static' || !pos) {
element._madePositioned = true;
element.style.position = 'relative';
// Opera returns the offset relative to the positioning context, when an
// element is position relative but top and left have not been defined
if (window.opera) {
element.style.top = 0;
element.style.left = 0;
}
}
return element;
},
undoPositioned: function(element) {
element = $(element);
if (element._madePositioned) {
element._madePositioned = undefined;
element.style.position =
element.style.top =
element.style.left =
element.style.bottom =
element.style.right = '';
}
return element;
},
makeClipping: function(element) {
element = $(element);
if (element._overflow) return element;
element._overflow = element.style.overflow || 'auto';
if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
element.style.overflow = 'hidden';
return element;
},
undoClipping: function(element) {
element = $(element);
if (!element._overflow) return element;
element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
element._overflow = null;
return element;
}
};
Object.extend(Element.Methods, {childOf: Element.Methods.descendantOf});
Element._attributeTranslations = {};
Element._attributeTranslations.names = {
colspan: "colSpan",
rowspan: "rowSpan",
valign: "vAlign",
datetime: "dateTime",
accesskey: "accessKey",
tabindex: "tabIndex",
enctype: "encType",
maxlength: "maxLength",
readonly: "readOnly",
longdesc: "longDesc"
};
Element._attributeTranslations.values = {
_getAttr: function(element, attribute) {
return element.getAttribute(attribute, 2);
},
_flag: function(element, attribute) {
return $(element).hasAttribute(attribute) ? attribute : null;
},
style: function(element) {
return element.style.cssText.toLowerCase();
},
title: function(element) {
var node = element.getAttributeNode('title');
return node.specified ? node.nodeValue : null;
}
};
Object.extend(Element._attributeTranslations.values, {
href: Element._attributeTranslations.values._getAttr,
src: Element._attributeTranslations.values._getAttr,
disabled: Element._attributeTranslations.values._flag,
checked: Element._attributeTranslations.values._flag,
readonly: Element._attributeTranslations.values._flag,
multiple: Element._attributeTranslations.values._flag
});
Element.Methods.Simulated = {
hasAttribute: function(element, attribute) {
var t = Element._attributeTranslations;
attribute = t.names[attribute] || attribute;
return $(element).getAttributeNode(attribute).specified;
}
};
// IE is missing .innerHTML support for TABLE-related elements
if (document.all && !window.opera){
Element.Methods.update = function(element, html) {
element = $(element);
html = typeof html == 'undefined' ? '' : html.toString();
var tagName = element.tagName.toUpperCase();
if (['THEAD','TBODY','TR','TD'].include(tagName)) {
var div = document.createElement('div');
switch (tagName) {
case 'THEAD':
case 'TBODY':
div.innerHTML = '' + html.stripScripts() + '
';
depth = 2;
break;
case 'TR':
div.innerHTML = '' + html.stripScripts() + '
';
depth = 3;
break;
case 'TD':
div.innerHTML = '' + html.stripScripts() + ' |
';
depth = 4;
}
$A(element.childNodes).each(function(node){
element.removeChild(node)
});
depth.times(function(){ div = div.firstChild });
$A(div.childNodes).each(
function(node){ element.appendChild(node) });
} else {
element.innerHTML = html.stripScripts();
}
setTimeout(function() {html.evalScripts()}, 10);
return element;
}
};
Object.extend(Element, Element.Methods);
var _nativeExtensions = false;
if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))
['', 'Form', 'Input', 'TextArea', 'Select'].each(function(tag) {
var className = 'HTML' + tag + 'Element';
if(window[className]) return;
var klass = window[className] = {};
klass.prototype = document.createElement(tag ? tag.toLowerCase() : 'div').__proto__;
});
Element.addMethods = function(methods) {
Object.extend(Element.Methods, methods || {});
function copy(methods, destination, onlyIfAbsent) {
onlyIfAbsent = onlyIfAbsent || false;
var cache = Element.extend.cache;
for (var property in methods) {
var value = methods[property];
if (!onlyIfAbsent || !(property in destination))
destination[property] = cache.findOrStore(value);
}
}
if (typeof HTMLElement != 'undefined') {
copy(Element.Methods, HTMLElement.prototype);
copy(Element.Methods.Simulated, HTMLElement.prototype, true);
copy(Form.Methods, HTMLFormElement.prototype);
[HTMLInputElement, HTMLTextAreaElement, HTMLSelectElement].each(function(klass) {
copy(Form.Element.Methods, klass.prototype);
});
_nativeExtensions = true;
}
}
var Toggle = new Object();
Toggle.display = Element.toggle;
/*--------------------------------------------------------------------------*/
Abstract.Insertion = function(adjacency) {
this.adjacency = adjacency;
}
Abstract.Insertion.prototype = {
initialize: function(element, content) {
this.element = $(element);
this.content = content.stripScripts();
if (this.adjacency && this.element.insertAdjacentHTML) {
try {
this.element.insertAdjacentHTML(this.adjacency, this.content);
} catch (e) {
var tagName = this.element.tagName.toUpperCase();
if (['TBODY', 'TR'].include(tagName)) {
this.insertContent(this.contentFromAnonymousTable());
} else {
throw e;
}
}
} else {
this.range = this.element.ownerDocument.createRange();
if (this.initializeRange) this.initializeRange();
this.insertContent([this.range.createContextualFragment(this.content)]);
}
setTimeout(function() {content.evalScripts()}, 10);
},
contentFromAnonymousTable: function() {
var div = document.createElement('div');
div.innerHTML = '';
return $A(div.childNodes[0].childNodes[0].childNodes);
}
}
var Insertion = new Object();
Insertion.Before = Class.create();
Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
initializeRange: function() {
this.range.setStartBefore(this.element);
},
insertContent: function(fragments) {
fragments.each((function(fragment) {
this.element.parentNode.insertBefore(fragment, this.element);
}).bind(this));
}
});
Insertion.Top = Class.create();
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
initializeRange: function() {
this.range.selectNodeContents(this.element);
this.range.collapse(true);
},
insertContent: function(fragments) {
fragments.reverse(false).each((function(fragment) {
this.element.insertBefore(fragment, this.element.firstChild);
}).bind(this));
}
});
Insertion.Bottom = Class.create();
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
initializeRange: function() {
this.range.selectNodeContents(this.element);
this.range.collapse(this.element);
},
insertContent: function(fragments) {
fragments.each((function(fragment) {
this.element.appendChild(fragment);
}).bind(this));
}
});
Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
initializeRange: function() {
this.range.setStartAfter(this.element);
},
insertContent: function(fragments) {
fragments.each((function(fragment) {
this.element.parentNode.insertBefore(fragment,
this.element.nextSibling);
}).bind(this));
}
});
/*--------------------------------------------------------------------------*/
Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
initialize: function(element) {
this.element = $(element);
},
_each: function(iterator) {
this.element.className.split(/\s+/).select(function(name) {
return name.length > 0;
})._each(iterator);
},
set: function(className) {
this.element.className = className;
},
add: function(classNameToAdd) {
if (this.include(classNameToAdd)) return;
this.set($A(this).concat(classNameToAdd).join(' '));
},
remove: function(classNameToRemove) {
if (!this.include(classNameToRemove)) return;
this.set($A(this).without(classNameToRemove).join(' '));
},
toString: function() {
return $A(this).join(' ');
}
};
Object.extend(Element.ClassNames.prototype, Enumerable);
var Selector = Class.create();
Selector.prototype = {
initialize: function(expression) {
this.params = {classNames: []};
this.expression = expression.toString().strip();
this.parseExpression();
this.compileMatcher();
},
parseExpression: function() {
function abort(message) { throw 'Parse error in selector: ' + message; }
if (this.expression == '') abort('empty expression');
var params = this.params, expr = this.expression, match, modifier, clause, rest;
while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
params.attributes = params.attributes || [];
params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
expr = match[1];
}
if (expr == '*') return this.params.wildcard = true;
while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
modifier = match[1], clause = match[2], rest = match[3];
switch (modifier) {
case '#': params.id = clause; break;
case '.': params.classNames.push(clause); break;
case '':
case undefined: params.tagName = clause.toUpperCase(); break;
default: abort(expr.inspect());
}
expr = rest;
}
if (expr.length > 0) abort(expr.inspect());
},
buildMatchExpression: function() {
var params = this.params, conditions = [], clause;
if (params.wildcard)
conditions.push('true');
if (clause = params.id)
conditions.push('element.readAttribute("id") == ' + clause.inspect());
if (clause = params.tagName)
conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
if ((clause = params.classNames).length > 0)
for (var i = 0, length = clause.length; i < length; i++)
conditions.push('element.hasClassName(' + clause[i].inspect() + ')');
if (clause = params.attributes) {
clause.each(function(attribute) {
var value = 'element.readAttribute(' + attribute.name.inspect() + ')';
var splitValueBy = function(delimiter) {
return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
}
switch (attribute.operator) {
case '=': conditions.push(value + ' == ' + attribute.value.inspect()); break;
case '~=': conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
case '|=': conditions.push(
splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
); break;
case '!=': conditions.push(value + ' != ' + attribute.value.inspect()); break;
case '':
case undefined: conditions.push('element.hasAttribute(' + attribute.name.inspect() + ')'); break;
default: throw 'Unknown operator ' + attribute.operator + ' in selector';
}
});
}
return conditions.join(' && ');
},
compileMatcher: function() {
this.match = new Function('element', 'if (!element.tagName) return false; \
element = $(element); \
return ' + this.buildMatchExpression());
},
findElements: function(scope) {
var element;
if (element = $(this.params.id))
if (this.match(element))
if (!scope || Element.childOf(element, scope))
return [element];
scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
var results = [];
for (var i = 0, length = scope.length; i < length; i++)
if (this.match(element = scope[i]))
results.push(Element.extend(element));
return results;
},
toString: function() {
return this.expression;
}
}
Object.extend(Selector, {
matchElements: function(elements, expression) {
var selector = new Selector(expression);
return elements.select(selector.match.bind(selector)).map(Element.extend);
},
findElement: function(elements, expression, index) {
if (typeof expression == 'number') index = expression, expression = false;
return Selector.matchElements(elements, expression || '*')[index || 0];
},
findChildElements: function(element, expressions) {
return expressions.map(function(expression) {
return expression.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null], function(results, expr) {
var selector = new Selector(expr);
return results.inject([], function(elements, result) {
return elements.concat(selector.findElements(result || element));
});
});
}).flatten();
}
});
function $$() {
return Selector.findChildElements(document, $A(arguments));
}
var Form = {
reset: function(form) {
$(form).reset();
return form;
},
serializeElements: function(elements, getHash) {
var data = elements.inject({}, function(result, element) {
if (!element.disabled && element.name) {
var key = element.name, value = $(element).getValue();
if (value != undefined) {
if (result[key]) {
if (result[key].constructor != Array) result[key] = [result[key]];
result[key].push(value);
}
else result[key] = value;
}
}
return result;
});
return getHash ? data : Hash.toQueryString(data);
}
};
Form.Methods = {
serialize: function(form, getHash) {
return Form.serializeElements(Form.getElements(form), getHash);
},
getElements: function(form) {
return $A($(form).getElementsByTagName('*')).inject([],
function(elements, child) {
if (Form.Element.Serializers[child.tagName.toLowerCase()])
elements.push(Element.extend(child));
return elements;
}
);
},
getInputs: function(form, typeName, name) {
form = $(form);
var inputs = form.getElementsByTagName('input');
if (!typeName && !name) return $A(inputs).map(Element.extend);
for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
var input = inputs[i];
if ((typeName && input.type != typeName) || (name && input.name != name))
continue;
matchingInputs.push(Element.extend(input));
}
return matchingInputs;
},
disable: function(form) {
form = $(form);
form.getElements().each(function(element) {
element.blur();
element.disabled = 'true';
});
return form;
},
enable: function(form) {
form = $(form);
form.getElements().each(function(element) {
element.disabled = '';
});
return form;
},
findFirstElement: function(form) {
return $(form).getElements().find(function(element) {
return element.type != 'hidden' && !element.disabled &&
['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
});
},
focusFirstElement: function(form) {
form = $(form);
form.findFirstElement().activate();
return form;
}
}
Object.extend(Form, Form.Methods);
/*--------------------------------------------------------------------------*/
Form.Element = {
focus: function(element) {
$(element).focus();
return element;
},
select: function(element) {
$(element).select();
return element;
}
}
Form.Element.Methods = {
serialize: function(element) {
element = $(element);
if (!element.disabled && element.name) {
var value = element.getValue();
if (value != undefined) {
var pair = {};
pair[element.name] = value;
return Hash.toQueryString(pair);
}
}
return '';
},
getValue: function(element) {
element = $(element);
var method = element.tagName.toLowerCase();
return Form.Element.Serializers[method](element);
},
clear: function(element) {
$(element).value = '';
return element;
},
present: function(element) {
return $(element).value != '';
},
activate: function(element) {
element = $(element);
element.focus();
if (element.select && ( element.tagName.toLowerCase() != 'input' ||
!['button', 'reset', 'submit'].include(element.type) ) )
element.select();
return element;
},
disable: function(element) {
element = $(element);
element.disabled = true;
return element;
},
enable: function(element) {
element = $(element);
element.blur();
element.disabled = false;
return element;
}
}
Object.extend(Form.Element, Form.Element.Methods);
var Field = Form.Element;
var $F = Form.Element.getValue;
/*--------------------------------------------------------------------------*/
Form.Element.Serializers = {
input: function(element) {
switch (element.type.toLowerCase()) {
case 'checkbox':
case 'radio':
return Form.Element.Serializers.inputSelector(element);
default:
return Form.Element.Serializers.textarea(element);
}
},
inputSelector: function(element) {
return element.checked ? element.value : null;
},
textarea: function(element) {
return element.value;
},
select: function(element) {
return this[element.type == 'select-one' ?
'selectOne' : 'selectMany'](element);
},
selectOne: function(element) {
var index = element.selectedIndex;
return index >= 0 ? this.optionValue(element.options[index]) : null;
},
selectMany: function(element) {
var values, length = element.length;
if (!length) return null;
for (var i = 0, values = []; i < length; i++) {
var opt = element.options[i];
if (opt.selected) values.push(this.optionValue(opt));
}
return values;
},
optionValue: function(opt) {
// extend element because hasAttribute may not be native
return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
}
}
/*--------------------------------------------------------------------------*/
Abstract.TimedObserver = function() {}
Abstract.TimedObserver.prototype = {
initialize: function(element, frequency, callback) {
this.frequency = frequency;
this.element = $(element);
this.callback = callback;
this.lastValue = this.getValue();
this.registerCallback();
},
registerCallback: function() {
setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
},
onTimerEvent: function() {
var value = this.getValue();
var changed = ('string' == typeof this.lastValue && 'string' == typeof value
? this.lastValue != value : String(this.lastValue) != String(value));
if (changed) {
this.callback(this.element, value);
this.lastValue = value;
}
}
}
Form.Element.Observer = Class.create();
Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
getValue: function() {
return Form.Element.getValue(this.element);
}
});
Form.Observer = Class.create();
Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
getValue: function() {
return Form.serialize(this.element);
}
});
/*--------------------------------------------------------------------------*/
Abstract.EventObserver = function() {}
Abstract.EventObserver.prototype = {
initialize: function(element, callback) {
this.element = $(element);
this.callback = callback;
this.lastValue = this.getValue();
if (this.element.tagName.toLowerCase() == 'form')
this.registerFormCallbacks();
else
this.registerCallback(this.element);
},
onElementEvent: function() {
var value = this.getValue();
if (this.lastValue != value) {
this.callback(this.element, value);
this.lastValue = value;
}
},
registerFormCallbacks: function() {
Form.getElements(this.element).each(this.registerCallback.bind(this));
},
registerCallback: function(element) {
if (element.type) {
switch (element.type.toLowerCase()) {
case 'checkbox':
case 'radio':
Event.observe(element, 'click', this.onElementEvent.bind(this));
break;
default:
Event.observe(element, 'change', this.onElementEvent.bind(this));
break;
}
}
}
}
Form.Element.EventObserver = Class.create();
Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
getValue: function() {
return Form.Element.getValue(this.element);
}
});
Form.EventObserver = Class.create();
Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
getValue: function() {
return Form.serialize(this.element);
}
});
if (!window.Event) {
var Event = new Object();
}
Object.extend(Event, {
KEY_BACKSPACE: 8,
KEY_TAB: 9,
KEY_RETURN: 13,
KEY_ESC: 27,
KEY_LEFT: 37,
KEY_UP: 38,
KEY_RIGHT: 39,
KEY_DOWN: 40,
KEY_DELETE: 46,
KEY_HOME: 36,
KEY_END: 35,
KEY_PAGEUP: 33,
KEY_PAGEDOWN: 34,
element: function(event) {
return event.target || event.srcElement;
},
isLeftClick: function(event) {
return (((event.which) && (event.which == 1)) ||
((event.button) && (event.button == 1)));
},
pointerX: function(event) {
return event.pageX || (event.clientX +
(document.documentElement.scrollLeft || document.body.scrollLeft));
},
pointerY: function(event) {
return event.pageY || (event.clientY +
(document.documentElement.scrollTop || document.body.scrollTop));
},
stop: function(event) {
if (event.preventDefault) {
event.preventDefault();
event.stopPropagation();
} else {
event.returnValue = false;
event.cancelBubble = true;
}
},
// find the first node with the given tagName, starting from the
// node the event was triggered on; traverses the DOM upwards
findElement: function(event, tagName) {
var element = Event.element(event);
while (element.parentNode && (!element.tagName ||
(element.tagName.toUpperCase() != tagName.toUpperCase())))
element = element.parentNode;
return element;
},
observers: false,
_observeAndCache: function(element, name, observer, useCapture) {
if (!this.observers) this.observers = [];
if (element.addEventListener) {
this.observers.push([element, name, observer, useCapture]);
element.addEventListener(name, observer, useCapture);
} else if (element.attachEvent) {
this.observers.push([element, name, observer, useCapture]);
element.attachEvent('on' + name, observer);
}
},
unloadCache: function() {
if (!Event.observers) return;
for (var i = 0, length = Event.observers.length; i < length; i++) {
Event.stopObserving.apply(this, Event.observers[i]);
Event.observers[i][0] = null;
}
Event.observers = false;
},
observe: function(element, name, observer, useCapture) {
element = $(element);
useCapture = useCapture || false;
if (name == 'keypress' &&
(navigator.appVersion.match(/Konqueror|Safari|KHTML/)
|| element.attachEvent))
name = 'keydown';
Event._observeAndCache(element, name, observer, useCapture);
},
stopObserving: function(element, name, observer, useCapture) {
element = $(element);
useCapture = useCapture || false;
if (name == 'keypress' &&
(navigator.appVersion.match(/Konqueror|Safari|KHTML/)
|| element.detachEvent))
name = 'keydown';
if (element.removeEventListener) {
element.removeEventListener(name, observer, useCapture);
} else if (element.detachEvent) {
try {
element.detachEvent('on' + name, observer);
} catch (e) {}
}
}
});
/* prevent memory leaks in IE */
if (navigator.appVersion.match(/\bMSIE\b/))
Event.observe(window, 'unload', Event.unloadCache, false);
var Position = {
// set to true if needed, warning: firefox performance problems
// NOT neeeded for page scrolling, only if draggable contained in
// scrollable elements
includeScrollOffsets: false,
// must be called before calling withinIncludingScrolloffset, every time the
// page is scrolled
prepare: function() {
this.deltaX = window.pageXOffset
|| document.documentElement.scrollLeft
|| document.body.scrollLeft
|| 0;
this.deltaY = window.pageYOffset
|| document.documentElement.scrollTop
|| document.body.scrollTop
|| 0;
},
realOffset: function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.scrollTop || 0;
valueL += element.scrollLeft || 0;
element = element.parentNode;
} while (element);
return [valueL, valueT];
},
cumulativeOffset: function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
element = element.offsetParent;
} while (element);
return [valueL, valueT];
},
positionedOffset: function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
element = element.offsetParent;
if (element) {
if(element.tagName=='BODY') break;
var p = Element.getStyle(element, 'position');
if (p == 'relative' || p == 'absolute') break;
}
} while (element);
return [valueL, valueT];
},
offsetParent: function(element) {
if (element.offsetParent) return element.offsetParent;
if (element == document.body) return element;
while ((element = element.parentNode) && element != document.body)
if (Element.getStyle(element, 'position') != 'static')
return element;
return document.body;
},
// caches x/y coordinate pair to use with overlap
within: function(element, x, y) {
if (this.includeScrollOffsets)
return this.withinIncludingScrolloffsets(element, x, y);
this.xcomp = x;
this.ycomp = y;
this.offset = this.cumulativeOffset(element);
return (y >= this.offset[1] &&
y < this.offset[1] + element.offsetHeight &&
x >= this.offset[0] &&
x < this.offset[0] + element.offsetWidth);
},
withinIncludingScrolloffsets: function(element, x, y) {
var offsetcache = this.realOffset(element);
this.xcomp = x + offsetcache[0] - this.deltaX;
this.ycomp = y + offsetcache[1] - this.deltaY;
this.offset = this.cumulativeOffset(element);
return (this.ycomp >= this.offset[1] &&
this.ycomp < this.offset[1] + element.offsetHeight &&
this.xcomp >= this.offset[0] &&
this.xcomp < this.offset[0] + element.offsetWidth);
},
// within must be called directly before
overlap: function(mode, element) {
if (!mode) return 0;
if (mode == 'vertical')
return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
element.offsetHeight;
if (mode == 'horizontal')
return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
element.offsetWidth;
},
page: function(forElement) {
var valueT = 0, valueL = 0;
var element = forElement;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
// Safari fix
if (element.offsetParent==document.body)
if (Element.getStyle(element,'position')=='absolute') break;
} while (element = element.offsetParent);
element = forElement;
do {
if (!window.opera || element.tagName=='BODY') {
valueT -= element.scrollTop || 0;
valueL -= element.scrollLeft || 0;
}
} while (element = element.parentNode);
return [valueL, valueT];
},
clone: function(source, target) {
var options = Object.extend({
setLeft: true,
setTop: true,
setWidth: true,
setHeight: true,
offsetTop: 0,
offsetLeft: 0
}, arguments[2] || {})
// find page position of source
source = $(source);
var p = Position.page(source);
// find coordinate system to use
target = $(target);
var delta = [0, 0];
var parent = null;
// delta [0,0] will do fine with position: fixed elements,
// position:absolute needs offsetParent deltas
if (Element.getStyle(target,'position') == 'absolute') {
parent = Position.offsetParent(target);
delta = Position.page(parent);
}
// correct by body offsets (fixes Safari)
if (parent == document.body) {
delta[0] -= document.body.offsetLeft;
delta[1] -= document.body.offsetTop;
}
// set position
if(options.setLeft) target.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
if(options.setTop) target.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
if(options.setWidth) target.style.width = source.offsetWidth + 'px';
if(options.setHeight) target.style.height = source.offsetHeight + 'px';
},
absolutize: function(element) {
element = $(element);
if (element.style.position == 'absolute') return;
Position.prepare();
var offsets = Position.positionedOffset(element);
var top = offsets[1];
var left = offsets[0];
var width = element.clientWidth;
var height = element.clientHeight;
element._originalLeft = left - parseFloat(element.style.left || 0);
element._originalTop = top - parseFloat(element.style.top || 0);
element._originalWidth = element.style.width;
element._originalHeight = element.style.height;
element.style.position = 'absolute';
element.style.top = top + 'px';
element.style.left = left + 'px';
element.style.width = width + 'px';
element.style.height = height + 'px';
},
relativize: function(element) {
element = $(element);
if (element.style.position == 'relative') return;
Position.prepare();
element.style.position = 'relative';
var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
element.style.top = top + 'px';
element.style.left = left + 'px';
element.style.height = element._originalHeight;
element.style.width = element._originalWidth;
}
}
// Safari returns margins on body which is incorrect if the child is absolutely
// positioned. For performance reasons, redefine Position.cumulativeOffset for
// KHTML/WebKit only.
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
Position.cumulativeOffset = function(element) {
var valueT = 0, valueL = 0;
do {
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
if (element.offsetParent == document.body)
if (Element.getStyle(element, 'position') == 'absolute') break;
element = element.offsetParent;
} while (element);
return [valueL, valueT];
}
}
Element.addMethods();
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
// The rest of this file is the actual ray tracer written by Adam
// Burmister. It's a concatenation of the following files:
//
// flog/color.js
// flog/light.js
// flog/vector.js
// flog/ray.js
// flog/scene.js
// flog/material/basematerial.js
// flog/material/solid.js
// flog/material/chessboard.js
// flog/shape/baseshape.js
// flog/shape/sphere.js
// flog/shape/plane.js
// flog/intersectioninfo.js
// flog/camera.js
// flog/background.js
// flog/engine.js
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Color = Class.create();
Flog.RayTracer.Color.prototype = {
red : 0.0,
green : 0.0,
blue : 0.0,
initialize : function(r, g, b) {
if(!r) r = 0.0;
if(!g) g = 0.0;
if(!b) b = 0.0;
this.red = r;
this.green = g;
this.blue = b;
},
add : function(c1, c2){
var result = new Flog.RayTracer.Color(0,0,0);
result.red = c1.red + c2.red;
result.green = c1.green + c2.green;
result.blue = c1.blue + c2.blue;
return result;
},
addScalar: function(c1, s){
var result = new Flog.RayTracer.Color(0,0,0);
result.red = c1.red + s;
result.green = c1.green + s;
result.blue = c1.blue + s;
result.limit();
return result;
},
subtract: function(c1, c2){
var result = new Flog.RayTracer.Color(0,0,0);
result.red = c1.red - c2.red;
result.green = c1.green - c2.green;
result.blue = c1.blue - c2.blue;
return result;
},
multiply : function(c1, c2) {
var result = new Flog.RayTracer.Color(0,0,0);
result.red = c1.red * c2.red;
result.green = c1.green * c2.green;
result.blue = c1.blue * c2.blue;
return result;
},
multiplyScalar : function(c1, f) {
var result = new Flog.RayTracer.Color(0,0,0);
result.red = c1.red * f;
result.green = c1.green * f;
result.blue = c1.blue * f;
return result;
},
divideFactor : function(c1, f) {
var result = new Flog.RayTracer.Color(0,0,0);
result.red = c1.red / f;
result.green = c1.green / f;
result.blue = c1.blue / f;
return result;
},
limit: function(){
this.red = (this.red > 0.0) ? ( (this.red > 1.0) ? 1.0 : this.red ) : 0.0;
this.green = (this.green > 0.0) ? ( (this.green > 1.0) ? 1.0 : this.green ) : 0.0;
this.blue = (this.blue > 0.0) ? ( (this.blue > 1.0) ? 1.0 : this.blue ) : 0.0;
},
distance : function(color) {
var d = Math.abs(this.red - color.red) + Math.abs(this.green - color.green) + Math.abs(this.blue - color.blue);
return d;
},
blend: function(c1, c2, w){
var result = new Flog.RayTracer.Color(0,0,0);
result = Flog.RayTracer.Color.prototype.add(
Flog.RayTracer.Color.prototype.multiplyScalar(c1, 1 - w),
Flog.RayTracer.Color.prototype.multiplyScalar(c2, w)
);
return result;
},
toString : function () {
var r = Math.floor(this.red*255);
var g = Math.floor(this.green*255);
var b = Math.floor(this.blue*255);
return "rgb("+ r +","+ g +","+ b +")";
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Light = Class.create();
Flog.RayTracer.Light.prototype = {
position: null,
color: null,
intensity: 10.0,
initialize : function(pos, color, intensity) {
this.position = pos;
this.color = color;
this.intensity = (intensity ? intensity : 10.0);
},
getIntensity: function(distance){
if(distance >= intensity) return 0;
return Math.pow((intensity - distance) / strength, 0.2);
},
toString : function () {
return 'Light [' + this.position.x + ',' + this.position.y + ',' + this.position.z + ']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Vector = Class.create();
Flog.RayTracer.Vector.prototype = {
x : 0.0,
y : 0.0,
z : 0.0,
initialize : function(x, y, z) {
this.x = (x ? x : 0);
this.y = (y ? y : 0);
this.z = (z ? z : 0);
},
copy: function(vector){
this.x = vector.x;
this.y = vector.y;
this.z = vector.z;
},
normalize : function() {
var m = this.magnitude();
return new Flog.RayTracer.Vector(this.x / m, this.y / m, this.z / m);
},
magnitude : function() {
return Math.sqrt((this.x * this.x) + (this.y * this.y) + (this.z * this.z));
},
cross : function(w) {
return new Flog.RayTracer.Vector(
-this.z * w.y + this.y * w.z,
this.z * w.x - this.x * w.z,
-this.y * w.x + this.x * w.y);
},
dot : function(w) {
return this.x * w.x + this.y * w.y + this.z * w.z;
},
add : function(v, w) {
return new Flog.RayTracer.Vector(w.x + v.x, w.y + v.y, w.z + v.z);
},
subtract : function(v, w) {
if(!w || !v) throw 'Vectors must be defined [' + v + ',' + w + ']';
return new Flog.RayTracer.Vector(v.x - w.x, v.y - w.y, v.z - w.z);
},
multiplyVector : function(v, w) {
return new Flog.RayTracer.Vector(v.x * w.x, v.y * w.y, v.z * w.z);
},
multiplyScalar : function(v, w) {
return new Flog.RayTracer.Vector(v.x * w, v.y * w, v.z * w);
},
toString : function () {
return 'Vector [' + this.x + ',' + this.y + ',' + this.z + ']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Ray = Class.create();
Flog.RayTracer.Ray.prototype = {
position : null,
direction : null,
initialize : function(pos, dir) {
this.position = pos;
this.direction = dir;
},
toString : function () {
return 'Ray [' + this.position + ',' + this.direction + ']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Scene = Class.create();
Flog.RayTracer.Scene.prototype = {
camera : null,
shapes : [],
lights : [],
background : null,
initialize : function() {
this.camera = new Flog.RayTracer.Camera(
new Flog.RayTracer.Vector(0,0,-5),
new Flog.RayTracer.Vector(0,0,1),
new Flog.RayTracer.Vector(0,1,0)
);
this.shapes = new Array();
this.lights = new Array();
this.background = new Flog.RayTracer.Background(new Flog.RayTracer.Color(0,0,0.5), 0.2);
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
if(typeof(Flog.RayTracer.Material) == 'undefined') Flog.RayTracer.Material = {};
Flog.RayTracer.Material.BaseMaterial = Class.create();
Flog.RayTracer.Material.BaseMaterial.prototype = {
gloss: 2.0, // [0...infinity] 0 = matt
transparency: 0.0, // 0=opaque
reflection: 0.0, // [0...infinity] 0 = no reflection
refraction: 0.50,
hasTexture: false,
initialize : function() {
},
getColor: function(u, v){
},
wrapUp: function(t){
t = t % 2.0;
if(t < -1) t += 2.0;
if(t >= 1) t -= 2.0;
return t;
},
toString : function () {
return 'Material [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Material.Solid = Class.create();
Flog.RayTracer.Material.Solid.prototype = Object.extend(
new Flog.RayTracer.Material.BaseMaterial(), {
initialize : function(color, reflection, refraction, transparency, gloss) {
this.color = color;
this.reflection = reflection;
this.transparency = transparency;
this.gloss = gloss;
this.hasTexture = false;
},
getColor: function(u, v){
return this.color;
},
toString : function () {
return 'SolidMaterial [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
}
}
);
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Material.Chessboard = Class.create();
Flog.RayTracer.Material.Chessboard.prototype = Object.extend(
new Flog.RayTracer.Material.BaseMaterial(), {
colorEven: null,
colorOdd: null,
density: 0.5,
initialize : function(colorEven, colorOdd, reflection, transparency, gloss, density) {
this.colorEven = colorEven;
this.colorOdd = colorOdd;
this.reflection = reflection;
this.transparency = transparency;
this.gloss = gloss;
this.density = density;
this.hasTexture = true;
},
getColor: function(u, v){
var t = this.wrapUp(u * this.density) * this.wrapUp(v * this.density);
if(t < 0.0)
return this.colorEven;
else
return this.colorOdd;
},
toString : function () {
return 'ChessMaterial [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
}
}
);
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
if(typeof(Flog.RayTracer.Shape) == 'undefined') Flog.RayTracer.Shape = {};
Flog.RayTracer.Shape.BaseShape = Class.create();
Flog.RayTracer.Shape.BaseShape.prototype = {
position: null,
material: null,
initialize : function() {
this.position = new Vector(0,0,0);
this.material = new Flog.RayTracer.Material.SolidMaterial(
new Flog.RayTracer.Color(1,0,1),
0,
0,
0
);
},
toString : function () {
return 'Material [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
if(typeof(Flog.RayTracer.Shape) == 'undefined') Flog.RayTracer.Shape = {};
Flog.RayTracer.Shape.Sphere = Class.create();
Flog.RayTracer.Shape.Sphere.prototype = {
initialize : function(pos, radius, material) {
this.radius = radius;
this.position = pos;
this.material = material;
},
intersect: function(ray){
var info = new Flog.RayTracer.IntersectionInfo();
info.shape = this;
var dst = Flog.RayTracer.Vector.prototype.subtract(ray.position, this.position);
var B = dst.dot(ray.direction);
var C = dst.dot(dst) - (this.radius * this.radius);
var D = (B * B) - C;
if(D > 0){ // intersection!
info.isHit = true;
info.distance = (-B) - Math.sqrt(D);
info.position = Flog.RayTracer.Vector.prototype.add(
ray.position,
Flog.RayTracer.Vector.prototype.multiplyScalar(
ray.direction,
info.distance
)
);
info.normal = Flog.RayTracer.Vector.prototype.subtract(
info.position,
this.position
).normalize();
info.color = this.material.getColor(0,0);
} else {
info.isHit = false;
}
return info;
},
toString : function () {
return 'Sphere [position=' + this.position + ', radius=' + this.radius + ']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
if(typeof(Flog.RayTracer.Shape) == 'undefined') Flog.RayTracer.Shape = {};
Flog.RayTracer.Shape.Plane = Class.create();
Flog.RayTracer.Shape.Plane.prototype = {
d: 0.0,
initialize : function(pos, d, material) {
this.position = pos;
this.d = d;
this.material = material;
},
intersect: function(ray){
var info = new Flog.RayTracer.IntersectionInfo();
var Vd = this.position.dot(ray.direction);
if(Vd == 0) return info; // no intersection
var t = -(this.position.dot(ray.position) + this.d) / Vd;
if(t <= 0) return info;
info.shape = this;
info.isHit = true;
info.position = Flog.RayTracer.Vector.prototype.add(
ray.position,
Flog.RayTracer.Vector.prototype.multiplyScalar(
ray.direction,
t
)
);
info.normal = this.position;
info.distance = t;
if(this.material.hasTexture){
var vU = new Flog.RayTracer.Vector(this.position.y, this.position.z, -this.position.x);
var vV = vU.cross(this.position);
var u = info.position.dot(vU);
var v = info.position.dot(vV);
info.color = this.material.getColor(u,v);
} else {
info.color = this.material.getColor(0,0);
}
return info;
},
toString : function () {
return 'Plane [' + this.position + ', d=' + this.d + ']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.IntersectionInfo = Class.create();
Flog.RayTracer.IntersectionInfo.prototype = {
isHit: false,
hitCount: 0,
shape: null,
position: null,
normal: null,
color: null,
distance: null,
initialize : function() {
this.color = new Flog.RayTracer.Color(0,0,0);
},
toString : function () {
return 'Intersection [' + this.position + ']';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Camera = Class.create();
Flog.RayTracer.Camera.prototype = {
position: null,
lookAt: null,
equator: null,
up: null,
screen: null,
initialize : function(pos, lookAt, up) {
this.position = pos;
this.lookAt = lookAt;
this.up = up;
this.equator = lookAt.normalize().cross(this.up);
this.screen = Flog.RayTracer.Vector.prototype.add(this.position, this.lookAt);
},
getRay: function(vx, vy){
var pos = Flog.RayTracer.Vector.prototype.subtract(
this.screen,
Flog.RayTracer.Vector.prototype.subtract(
Flog.RayTracer.Vector.prototype.multiplyScalar(this.equator, vx),
Flog.RayTracer.Vector.prototype.multiplyScalar(this.up, vy)
)
);
pos.y = pos.y * -1;
var dir = Flog.RayTracer.Vector.prototype.subtract(
pos,
this.position
);
var ray = new Flog.RayTracer.Ray(pos, dir.normalize());
return ray;
},
toString : function () {
return 'Ray []';
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Background = Class.create();
Flog.RayTracer.Background.prototype = {
color : null,
ambience : 0.0,
initialize : function(color, ambience) {
this.color = color;
this.ambience = ambience;
}
}
/* Fake a Flog.* namespace */
if(typeof(Flog) == 'undefined') var Flog = {};
if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
Flog.RayTracer.Engine = Class.create();
Flog.RayTracer.Engine.prototype = {
canvas: null, /* 2d context we can render to */
initialize: function(options){
this.options = Object.extend({
canvasHeight: 100,
canvasWidth: 100,
pixelWidth: 2,
pixelHeight: 2,
renderDiffuse: false,
renderShadows: false,
renderHighlights: false,
renderReflections: false,
rayDepth: 2
}, options || {});
this.options.canvasHeight /= this.options.pixelHeight;
this.options.canvasWidth /= this.options.pixelWidth;
/* TODO: dynamically include other scripts */
},
setPixel: function(x, y, color){
var pxW, pxH;
pxW = this.options.pixelWidth;
pxH = this.options.pixelHeight;
if (this.canvas) {
this.canvas.fillStyle = color.toString();
this.canvas.fillRect (x * pxW, y * pxH, pxW, pxH);
} else {
// print(x * pxW, y * pxH, pxW, pxH);
}
},
renderScene: function(scene, canvas){
/* Get canvas */
if (canvas) {
this.canvas = canvas.getContext("2d");
} else {
this.canvas = null;
}
var canvasHeight = this.options.canvasHeight;
var canvasWidth = this.options.canvasWidth;
for(var y=0; y < canvasHeight; y++){
for(var x=0; x < canvasWidth; x++){
var yp = y * 1.0 / canvasHeight * 2 - 1;
var xp = x * 1.0 / canvasWidth * 2 - 1;
var ray = scene.camera.getRay(xp, yp);
var color = this.getPixelColor(ray, scene);
this.setPixel(x, y, color);
}
}
},
getPixelColor: function(ray, scene){
var info = this.testIntersection(ray, scene, null);
if(info.isHit){
var color = this.rayTrace(info, ray, scene, 0);
return color;
}
return scene.background.color;
},
testIntersection: function(ray, scene, exclude){
var hits = 0;
var best = new Flog.RayTracer.IntersectionInfo();
best.distance = 2000;
for(var i=0; i= 0 && info.distance < best.distance){
best = info;
hits++;
}
}
}
best.hitCount = hits;
return best;
},
getReflectionRay: function(P,N,V){
var c1 = -N.dot(V);
var R1 = Flog.RayTracer.Vector.prototype.add(
Flog.RayTracer.Vector.prototype.multiplyScalar(N, 2*c1),
V
);
return new Flog.RayTracer.Ray(P, R1);
},
rayTrace: function(info, ray, scene, depth){
// Calc ambient
var color = Flog.RayTracer.Color.prototype.multiplyScalar(info.color, scene.background.ambience);
var oldColor = color;
var shininess = Math.pow(10, info.shape.material.gloss + 1);
for(var i=0; i 0.0){
color = Flog.RayTracer.Color.prototype.add(
color,
Flog.RayTracer.Color.prototype.multiply(
info.color,
Flog.RayTracer.Color.prototype.multiplyScalar(
light.color,
L
)
)
);
}
}
// The greater the depth the more accurate the colours, but
// this is exponentially (!) expensive
if(depth <= this.options.rayDepth){
// calculate reflection ray
if(this.options.renderReflections && info.shape.material.reflection > 0)
{
var reflectionRay = this.getReflectionRay(info.position, info.normal, ray.direction);
var refl = this.testIntersection(reflectionRay, scene, info.shape);
if (refl.isHit && refl.distance > 0){
refl.color = this.rayTrace(refl, reflectionRay, scene, depth + 1);
} else {
refl.color = scene.background.color;
}
color = Flog.RayTracer.Color.prototype.blend(
color,
refl.color,
info.shape.material.reflection
);
}
// Refraction
/* TODO */
}
/* Render shadows and highlights */
var shadowInfo = new Flog.RayTracer.IntersectionInfo();
if(this.options.renderShadows){
var shadowRay = new Flog.RayTracer.Ray(info.position, v);
shadowInfo = this.testIntersection(shadowRay, scene, info.shape);
if(shadowInfo.isHit && shadowInfo.shape != info.shape /*&& shadowInfo.shape.type != 'PLANE'*/){
var vA = Flog.RayTracer.Color.prototype.multiplyScalar(color, 0.5);
var dB = (0.5 * Math.pow(shadowInfo.shape.material.transparency, 0.5));
color = Flog.RayTracer.Color.prototype.addScalar(vA,dB);
}
}
// Phong specular highlights
if(this.options.renderHighlights && !shadowInfo.isHit && info.shape.material.gloss > 0){
var Lv = Flog.RayTracer.Vector.prototype.subtract(
info.shape.position,
light.position
).normalize();
var E = Flog.RayTracer.Vector.prototype.subtract(
scene.camera.position,
info.shape.position
).normalize();
var H = Flog.RayTracer.Vector.prototype.subtract(
E,
Lv
).normalize();
var glossWeight = Math.pow(Math.max(info.normal.dot(H), 0), shininess);
color = Flog.RayTracer.Color.prototype.add(
Flog.RayTracer.Color.prototype.multiplyScalar(light.color, glossWeight),
color
);
}
}
color.limit();
return color;
}
};
function renderScene(){
var scene = new Flog.RayTracer.Scene();
scene.camera = new Flog.RayTracer.Camera(
new Flog.RayTracer.Vector(0, 0, -15),
new Flog.RayTracer.Vector(-0.2, 0, 5),
new Flog.RayTracer.Vector(0, 1, 0)
);
scene.background = new Flog.RayTracer.Background(
new Flog.RayTracer.Color(0.5, 0.5, 0.5),
0.4
);
var sphere = new Flog.RayTracer.Shape.Sphere(
new Flog.RayTracer.Vector(-1.5, 1.5, 2),
1.5,
new Flog.RayTracer.Material.Solid(
new Flog.RayTracer.Color(0,0.5,0.5),
0.3,
0.0,
0.0,
2.0
)
);
var sphere1 = new Flog.RayTracer.Shape.Sphere(
new Flog.RayTracer.Vector(1, 0.25, 1),
0.5,
new Flog.RayTracer.Material.Solid(
new Flog.RayTracer.Color(0.9,0.9,0.9),
0.1,
0.0,
0.0,
1.5
)
);
var plane = new Flog.RayTracer.Shape.Plane(
new Flog.RayTracer.Vector(0.1, 0.9, -0.5).normalize(),
1.2,
new Flog.RayTracer.Material.Chessboard(
new Flog.RayTracer.Color(1,1,1),
new Flog.RayTracer.Color(0,0,0),
0.2,
0.0,
1.0,
0.7
)
);
scene.shapes.push(plane);
scene.shapes.push(sphere);
scene.shapes.push(sphere1);
var light = new Flog.RayTracer.Light(
new Flog.RayTracer.Vector(5, 10, -1),
new Flog.RayTracer.Color(0.8, 0.8, 0.8)
);
var light1 = new Flog.RayTracer.Light(
new Flog.RayTracer.Vector(-3, 5, -15),
new Flog.RayTracer.Color(0.8, 0.8, 0.8),
100
);
scene.lights.push(light);
scene.lights.push(light1);
var imageWidth = 100; // $F('imageWidth');
var imageHeight = 100; // $F('imageHeight');
var pixelSize = "5,5".split(','); // $F('pixelSize').split(',');
var renderDiffuse = true; // $F('renderDiffuse');
var renderShadows = true; // $F('renderShadows');
var renderHighlights = true; // $F('renderHighlights');
var renderReflections = true; // $F('renderReflections');
var rayDepth = 2;//$F('rayDepth');
var raytracer = new Flog.RayTracer.Engine(
{
canvasWidth: imageWidth,
canvasHeight: imageHeight,
pixelWidth: pixelSize[0],
pixelHeight: pixelSize[1],
"renderDiffuse": renderDiffuse,
"renderHighlights": renderHighlights,
"renderShadows": renderShadows,
"renderReflections": renderReflections,
"rayDepth": rayDepth
}
);
raytracer.renderScene(scene, null, 0);
}
for (var i = 0; i < 6; ++i)
renderScene();
// Copyright 2007 Google Inc. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This is a JavaScript implementation of the Richards
// benchmark from:
//
// http://www.cl.cam.ac.uk/~mr10/Bench.html
//
// The benchmark was originally implemented in BCPL by
// Martin Richards.
/**
* The Richards benchmark simulates the task dispatcher of an
* operating system.
**/
function runRichards() {
var scheduler = new Scheduler();
scheduler.addIdleTask(ID_IDLE, 0, null, COUNT);
var queue = new Packet(null, ID_WORKER, KIND_WORK);
queue = new Packet(queue, ID_WORKER, KIND_WORK);
scheduler.addWorkerTask(ID_WORKER, 1000, queue);
queue = new Packet(null, ID_DEVICE_A, KIND_DEVICE);
queue = new Packet(queue, ID_DEVICE_A, KIND_DEVICE);
queue = new Packet(queue, ID_DEVICE_A, KIND_DEVICE);
scheduler.addHandlerTask(ID_HANDLER_A, 2000, queue);
queue = new Packet(null, ID_DEVICE_B, KIND_DEVICE);
queue = new Packet(queue, ID_DEVICE_B, KIND_DEVICE);
queue = new Packet(queue, ID_DEVICE_B, KIND_DEVICE);
scheduler.addHandlerTask(ID_HANDLER_B, 3000, queue);
scheduler.addDeviceTask(ID_DEVICE_A, 4000, null);
scheduler.addDeviceTask(ID_DEVICE_B, 5000, null);
scheduler.schedule();
if (scheduler.queueCount != EXPECTED_QUEUE_COUNT ||
scheduler.holdCount != EXPECTED_HOLD_COUNT) {
var msg =
"Error during execution: queueCount = " + scheduler.queueCount +
", holdCount = " + scheduler.holdCount + ".";
print(msg);
}
}
var COUNT = 1000;
/**
* These two constants specify how many times a packet is queued and
* how many times a task is put on hold in a correct run of richards.
* They don't have any meaning a such but are characteristic of a
* correct run so if the actual queue or hold count is different from
* the expected there must be a bug in the implementation.
**/
var EXPECTED_QUEUE_COUNT = 2322;
var EXPECTED_HOLD_COUNT = 928;
/**
* A scheduler can be used to schedule a set of tasks based on their relative
* priorities. Scheduling is done by maintaining a list of task control blocks
* which holds tasks and the data queue they are processing.
* @constructor
*/
function Scheduler() {
this.queueCount = 0;
this.holdCount = 0;
this.blocks = new Array(NUMBER_OF_IDS);
this.list = null;
this.currentTcb = null;
this.currentId = null;
}
var ID_IDLE = 0;
var ID_WORKER = 1;
var ID_HANDLER_A = 2;
var ID_HANDLER_B = 3;
var ID_DEVICE_A = 4;
var ID_DEVICE_B = 5;
var NUMBER_OF_IDS = 6;
var KIND_DEVICE = 0;
var KIND_WORK = 1;
/**
* Add an idle task to this scheduler.
* @param {int} id the identity of the task
* @param {int} priority the task's priority
* @param {Packet} queue the queue of work to be processed by the task
* @param {int} count the number of times to schedule the task
*/
Scheduler.prototype.addIdleTask = function (id, priority, queue, count) {
this.addRunningTask(id, priority, queue, new IdleTask(this, 1, count));
};
/**
* Add a work task to this scheduler.
* @param {int} id the identity of the task
* @param {int} priority the task's priority
* @param {Packet} queue the queue of work to be processed by the task
*/
Scheduler.prototype.addWorkerTask = function (id, priority, queue) {
this.addTask(id, priority, queue, new WorkerTask(this, ID_HANDLER_A, 0));
};
/**
* Add a handler task to this scheduler.
* @param {int} id the identity of the task
* @param {int} priority the task's priority
* @param {Packet} queue the queue of work to be processed by the task
*/
Scheduler.prototype.addHandlerTask = function (id, priority, queue) {
this.addTask(id, priority, queue, new HandlerTask(this));
};
/**
* Add a handler task to this scheduler.
* @param {int} id the identity of the task
* @param {int} priority the task's priority
* @param {Packet} queue the queue of work to be processed by the task
*/
Scheduler.prototype.addDeviceTask = function (id, priority, queue) {
this.addTask(id, priority, queue, new DeviceTask(this))
};
/**
* Add the specified task and mark it as running.
* @param {int} id the identity of the task
* @param {int} priority the task's priority
* @param {Packet} queue the queue of work to be processed by the task
* @param {Task} task the task to add
*/
Scheduler.prototype.addRunningTask = function (id, priority, queue, task) {
this.addTask(id, priority, queue, task);
this.currentTcb.setRunning();
};
/**
* Add the specified task to this scheduler.
* @param {int} id the identity of the task
* @param {int} priority the task's priority
* @param {Packet} queue the queue of work to be processed by the task
* @param {Task} task the task to add
*/
Scheduler.prototype.addTask = function (id, priority, queue, task) {
this.currentTcb = new TaskControlBlock(this.list, id, priority, queue, task);
this.list = this.currentTcb;
this.blocks[id] = this.currentTcb;
};
/**
* Execute the tasks managed by this scheduler.
*/
Scheduler.prototype.schedule = function () {
this.currentTcb = this.list;
while (this.currentTcb != null) {
if (this.currentTcb.isHeldOrSuspended()) {
this.currentTcb = this.currentTcb.link;
} else {
this.currentId = this.currentTcb.id;
this.currentTcb = this.currentTcb.run();
}
}
};
/**
* Release a task that is currently blocked and return the next block to run.
* @param {int} id the id of the task to suspend
*/
Scheduler.prototype.release = function (id) {
var tcb = this.blocks[id];
if (tcb == null) return tcb;
tcb.markAsNotHeld();
if (tcb.priority > this.currentTcb.priority) {
return tcb;
} else {
return this.currentTcb;
}
};
/**
* Block the currently executing task and return the next task control block
* to run. The blocked task will not be made runnable until it is explicitly
* released, even if new work is added to it.
*/
Scheduler.prototype.holdCurrent = function () {
this.holdCount++;
this.currentTcb.markAsHeld();
return this.currentTcb.link;
};
/**
* Suspend the currently executing task and return the next task control block
* to run. If new work is added to the suspended task it will be made runnable.
*/
Scheduler.prototype.suspendCurrent = function () {
this.currentTcb.markAsSuspended();
return this.currentTcb;
};
/**
* Add the specified packet to the end of the worklist used by the task
* associated with the packet and make the task runnable if it is currently
* suspended.
* @param {Packet} packet the packet to add
*/
Scheduler.prototype.queue = function (packet) {
var t = this.blocks[packet.id];
if (t == null) return t;
this.queueCount++;
packet.link = null;
packet.id = this.currentId;
return t.checkPriorityAdd(this.currentTcb, packet);
};
/**
* A task control block manages a task and the queue of work packages associated
* with it.
* @param {TaskControlBlock} link the preceding block in the linked block list
* @param {int} id the id of this block
* @param {int} priority the priority of this block
* @param {Packet} queue the queue of packages to be processed by the task
* @param {Task} task the task
* @constructor
*/
function TaskControlBlock(link, id, priority, queue, task) {
this.link = link;
this.id = id;
this.priority = priority;
this.queue = queue;
this.task = task;
if (queue == null) {
this.state = STATE_SUSPENDED;
} else {
this.state = STATE_SUSPENDED_RUNNABLE;
}
}
/**
* The task is running and is currently scheduled.
*/
var STATE_RUNNING = 0;
/**
* The task has packets left to process.
*/
var STATE_RUNNABLE = 1;
/**
* The task is not currently running. The task is not blocked as such and may
* be started by the scheduler.
*/
var STATE_SUSPENDED = 2;
/**
* The task is blocked and cannot be run until it is explicitly released.
*/
var STATE_HELD = 4;
var STATE_SUSPENDED_RUNNABLE = STATE_SUSPENDED | STATE_RUNNABLE;
var STATE_NOT_HELD = ~STATE_HELD;
TaskControlBlock.prototype.setRunning = function () {
this.state = STATE_RUNNING;
};
TaskControlBlock.prototype.markAsNotHeld = function () {
this.state = this.state & STATE_NOT_HELD;
};
TaskControlBlock.prototype.markAsHeld = function () {
this.state = this.state | STATE_HELD;
};
TaskControlBlock.prototype.isHeldOrSuspended = function () {
return (this.state & STATE_HELD) != 0 || (this.state == STATE_SUSPENDED);
};
TaskControlBlock.prototype.markAsSuspended = function () {
this.state = this.state | STATE_SUSPENDED;
};
TaskControlBlock.prototype.markAsRunnable = function () {
this.state = this.state | STATE_RUNNABLE;
};
/**
* Runs this task, if it is ready to be run, and returns the next task to run.
*/
TaskControlBlock.prototype.run = function () {
var packet;
if (this.state == STATE_SUSPENDED_RUNNABLE) {
packet = this.queue;
this.queue = packet.link;
if (this.queue == null) {
this.state = STATE_RUNNING;
} else {
this.state = STATE_RUNNABLE;
}
} else {
packet = null;
}
return this.task.run(packet);
};
/**
* Adds a packet to the worklist of this block's task, marks this as runnable if
* necessary, and returns the next runnable object to run (the one
* with the highest priority).
*/
TaskControlBlock.prototype.checkPriorityAdd = function (task, packet) {
if (this.queue == null) {
this.queue = packet;
this.markAsRunnable();
if (this.priority > task.priority) return this;
} else {
this.queue = packet.addTo(this.queue);
}
return task;
};
TaskControlBlock.prototype.toString = function () {
return "tcb { " + this.task + "@" + this.state + " }";
};
/**
* An idle task doesn't do any work itself but cycles control between the two
* device tasks.
* @param {Scheduler} scheduler the scheduler that manages this task
* @param {int} v1 a seed value that controls how the device tasks are scheduled
* @param {int} count the number of times this task should be scheduled
* @constructor
*/
function IdleTask(scheduler, v1, count) {
this.scheduler = scheduler;
this.v1 = v1;
this.count = count;
}
IdleTask.prototype.run = function (packet) {
this.count--;
if (this.count == 0) return this.scheduler.holdCurrent();
if ((this.v1 & 1) == 0) {
this.v1 = this.v1 >> 1;
return this.scheduler.release(ID_DEVICE_A);
} else {
this.v1 = (this.v1 >> 1) ^ 0xD008;
return this.scheduler.release(ID_DEVICE_B);
}
};
IdleTask.prototype.toString = function () {
return "IdleTask"
};
/**
* A task that suspends itself after each time it has been run to simulate
* waiting for data from an external device.
* @param {Scheduler} scheduler the scheduler that manages this task
* @constructor
*/
function DeviceTask(scheduler) {
this.scheduler = scheduler;
this.v1 = null;
}
DeviceTask.prototype.run = function (packet) {
if (packet == null) {
if (this.v1 == null) return this.scheduler.suspendCurrent();
var v = this.v1;
this.v1 = null;
return this.scheduler.queue(v);
} else {
this.v1 = packet;
return this.scheduler.holdCurrent();
}
};
DeviceTask.prototype.toString = function () {
return "DeviceTask";
};
/**
* A task that manipulates work packets.
* @param {Scheduler} scheduler the scheduler that manages this task
* @param {int} v1 a seed used to specify how work packets are manipulated
* @param {int} v2 another seed used to specify how work packets are manipulated
* @constructor
*/
function WorkerTask(scheduler, v1, v2) {
this.scheduler = scheduler;
this.v1 = v1;
this.v2 = v2;
}
WorkerTask.prototype.run = function (packet) {
if (packet == null) {
return this.scheduler.suspendCurrent();
} else {
if (this.v1 == ID_HANDLER_A) {
this.v1 = ID_HANDLER_B;
} else {
this.v1 = ID_HANDLER_A;
}
packet.id = this.v1;
packet.a1 = 0;
for (var i = 0; i < DATA_SIZE; i++) {
this.v2++;
if (this.v2 > 26) this.v2 = 1;
packet.a2[i] = this.v2;
}
return this.scheduler.queue(packet);
}
};
WorkerTask.prototype.toString = function () {
return "WorkerTask";
};
/**
* A task that manipulates work packets and then suspends itself.
* @param {Scheduler} scheduler the scheduler that manages this task
* @constructor
*/
function HandlerTask(scheduler) {
this.scheduler = scheduler;
this.v1 = null;
this.v2 = null;
}
HandlerTask.prototype.run = function (packet) {
if (packet != null) {
if (packet.kind == KIND_WORK) {
this.v1 = packet.addTo(this.v1);
} else {
this.v2 = packet.addTo(this.v2);
}
}
if (this.v1 != null) {
var count = this.v1.a1;
var v;
if (count < DATA_SIZE) {
if (this.v2 != null) {
v = this.v2;
this.v2 = this.v2.link;
v.a1 = this.v1.a2[count];
this.v1.a1 = count + 1;
return this.scheduler.queue(v);
}
} else {
v = this.v1;
this.v1 = this.v1.link;
return this.scheduler.queue(v);
}
}
return this.scheduler.suspendCurrent();
};
HandlerTask.prototype.toString = function () {
return "HandlerTask";
};
/* --- *
* P a c k e t
* --- */
var DATA_SIZE = 4;
/**
* A simple package of data that is manipulated by the tasks. The exact layout
* of the payload data carried by a packet is not importaint, and neither is the
* nature of the work performed on packets by the tasks.
*
* Besides carrying data, packets form linked lists and are hence used both as
* data and worklists.
* @param {Packet} link the tail of the linked list of packets
* @param {int} id an ID for this packet
* @param {int} kind the type of this packet
* @constructor
*/
function Packet(link, id, kind) {
this.link = link;
this.id = id;
this.kind = kind;
this.a1 = 0;
this.a2 = new Array(DATA_SIZE);
}
/**
* Add this packet to the end of a worklist, and return the worklist.
* @param {Packet} queue the worklist to add this packet to
*/
Packet.prototype.addTo = function (queue) {
this.link = null;
if (queue == null) return this;
var peek, next = queue;
while ((peek = next.link) != null)
next = peek;
next.link = this;
return queue;
};
Packet.prototype.toString = function () {
return "Packet";
};
for (var i = 0; i < 350; ++i)
runRichards();
function f()
{
function g() { }
}
for (var i = 0; i < 300000; ++i)
f();
function f(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9)
{
}
for (var i = 0; i < 3000000; ++i)
f(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
function f()
{
}
for (var i = 0; i < 4000000; ++i)
f();
function f(x0, x1, x2, x3, x4)
{
}
for (var i = 0; i < 3000000; ++i)
f(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
function f(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9)
{
}
for (var i = 0; i < 3000000; ++i)
f();
function f(x, y, z)
{
return x + y + z;
}
for (var i = 0; i < 2500000; ++i)
f(1, 2, 3);
for (x = 0; x < 1200000; ++x)
;
for (var i = 0; i < 10000000; ++i)
;
var count = 6000000;
var sum = 0;
for (var i = 0; i < count; i++) {
sum = i + count;
}