/* * Copyright (C) 2016 Apple 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: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
*/ "use strict";
function isRepresentableAsInt32(value)
{ return (value | 0) === value;
}
function addIndexed(list, cons, ...args)
{
let result = new cons(list.length, ...args);
list.push(result); return result;
}
function symbolName(symbol)
{
let fullString = symbol.toString(); return fullString.substring("Symbol(".length, fullString.length - ")".length);
}
function lowerSymbolName(symbol)
{ return symbolName(symbol).toLowerCase();
}
function setToString(set)
{
let result = ""; for (let value of set) { if (result)
result += ", ";
result += value;
} return result;
}
function mergeIntoSet(target, source)
{
let didAdd = false; for (let value of source) { if (target.has(value)) continue;
target.add(value);
didAdd = true;
} return didAdd;
}
function nonEmptyRangesOverlap(leftMin, leftMax, rightMin, rightMax)
{ if (leftMin >= leftMax) thrownew Error("Bad left range"); if (rightMin >= rightMax) thrownew Error("Bad right range");
if (leftMin <= rightMin && leftMax > rightMin) returntrue; if (rightMin <= leftMin && rightMax > leftMin) returntrue; returnfalse;
}
function rangesOverlap(leftMin, leftMax, rightMin, rightMax)
{ if (leftMin > leftMax) thrownew Error("Bad left range"); if (rightMin > rightMax) thrownew Error("Bad right range");
if (leftMin == leftMax) returnfalse; if (rightMin == rightMax) returnfalse;
function removeAllMatching(array, func)
{
let srcIndex = 0;
let dstIndex = 0; while (srcIndex < array.length) {
let value = array[srcIndex++]; if (!func(value))
array[dstIndex++] = value;
}
array.length = dstIndex;
}
function bubbleSort(array, lessThan)
{ function swap(i, j)
{ var tmp = array[i];
array[i] = array[j];
array[j] = tmp;
}
let begin = 0;
let end = array.length; for (;;) {
let changed = false;
function bubble(i, j)
{ if (lessThan(array[i], array[j])) {
swap(i, j);
changed = true;
}
}
if (end < begin) thrownew Error("Begin and end are messed up");
let limit = end - begin; for (let i = limit; i-- > 1;)
bubble(begin + i, begin + i - 1); if (!changed) return;
// After one run, the first element in the list is guaranteed to be the smallest.
begin++;
// Now go in the other direction. This eliminates most sorting pathologies.
changed = false;
if (end < begin) thrownew Error("Begin and end are messed up");
limit = end - begin; for (let i = 1; i < limit; ++i)
bubble(begin + i, begin + i - 1); if (!changed) return;
// Now the last element is guaranteed to be the largest.
end--;
}
}
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