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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
"use strict";
function makeContainerPosVisible(container, pos) {
var height = container.offsetHeight;
var margin = Math.floor(height / 4);
if (pos < container.scrollTop + margin) {
pos -= margin;
if (pos < 0) pos = 0;
container.scrollTop = pos;
return;
}
if (pos > (container.scrollTop + 3 * margin)) {
pos = pos - 3 * margin;
if (pos < 0) pos = 0;
container.scrollTop = pos;
}
}
function lowerBound(a, value, compare, lookup) {
let first = 0;
let count = a.length;
while (count > 0) {
let step = Math.floor(count / 2);
let middle = first + step;
let middle_value = (lookup === undefined) ? a[middle] : lookup(a, middle);
let result = (compare === undefined) ? (middle_value < value) : compare(middle_value, value);
if (result) {
first = middle + 1;
count -= step + 1;
} else {
count = step;
}
}
return first;
}
function upperBound(a, value, compare, lookup) {
let first = 0;
let count = a.length;
while (count > 0) {
let step = Math.floor(count / 2);
let middle = first + step;
let middle_value = (lookup === undefined) ? a[middle] : lookup(a, middle);
let result = (compare === undefined) ? (value < middle_value) : compare(value, middle_value);
if (!result) {
first = middle + 1;
count -= step + 1;
} else {
count = step;
}
}
return first;
}
function sortUnique(arr, f) {
arr = arr.sort(f);
let ret = [arr[0]];
for (var i = 1; i < arr.length; i++) {
if (arr[i-1] !== arr[i]) {
ret.push(arr[i]);
}
}
return ret;
}
// Partial application without binding the receiver
function partial(f) {
var arguments1 = Array.prototype.slice.call(arguments, 1);
return function() {
var arguments2 = Array.from(arguments);
f.apply(this, arguments1.concat(arguments2));
}
}
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