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Ensure many n like params are coerced to integers. [closes #1377]

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John-David Dalton
2015-07-31 08:35:44 -07:00
parent 7f7ebed4ea
commit 73464d6bb6
2 changed files with 176 additions and 92 deletions
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65
lodash.js
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@@ -1790,11 +1790,11 @@
function baseFill(array, value, start, end) {
var length = array.length;
start = start == null ? 0 : (+start || 0);
start = start == null ? 0 : toInteger(start);
if (start < 0) {
start = -start > length ? 0 : (length + start);
}
end = (end === undefined || end > length) ? length : (+end || 0);
end = (end === undefined || end > length) ? length : toInteger(end);
if (end < 0) {
end += length;
}
@@ -2552,11 +2552,11 @@
var index = -1,
length = array.length;
start = start == null ? 0 : (+start || 0);
start = start == null ? 0 : toInteger(start);
if (start < 0) {
start = -start > length ? 0 : (length + start);
}
end = (end === undefined || end > length) ? length : (+end || 0);
end = (end === undefined || end > length) ? length : toInteger(end);
if (end < 0) {
end += length;
}
@@ -3387,7 +3387,7 @@
function createRound(methodName) {
var func = Math[methodName];
return function(number, precision) {
precision = precision === undefined ? 0 : (+precision || 0);
precision = precision === undefined ? 0 : toInteger(precision);
if (precision) {
precision = pow(10, precision);
return func(number * precision) / precision;
@@ -3438,6 +3438,9 @@
partials = holders = undefined;
}
ary = ary == null ? ary : nativeMax(toInteger(ary), 0);
arity = arity == null ? arity : toInteger(arity);
var data = isBindKey ? undefined : getData(func),
newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];
@@ -3448,7 +3451,7 @@
}
newData[9] = arity == null
? (isBindKey ? 0 : func.length)
: (nativeMax(arity - length, 0) || 0);
: nativeMax(arity - length, 0);
if (bitmask == BIND_FLAG) {
var result = createBindWrapper(newData[0], newData[2]);
@@ -4141,8 +4144,19 @@
* @param {*} value The value to process.
* @returns {Function} Returns the function.
*/
function toFunction(func) {
return typeof func == 'function' ? func : identity;
function toFunction(value) {
return typeof value == 'function' ? value : identity;
}
/**
* Converts `value` to an integer.
*
* @private
* @param {*} value The value to convert.
* @returns {number} Returns the integer.
*/
function toInteger(value) {
return nativeFloor(value) || 0;
}
/**
@@ -4198,7 +4212,7 @@
* // => [['a', 'b', 'c'], ['d']]
*/
function chunk(array, size) {
size = nativeMax(nativeFloor(size) || 0, 0);
size = nativeMax(toInteger(size), 0);
var length = array ? array.length : 0;
if (!length || size < 1) {
@@ -4326,8 +4340,8 @@
if (!length) {
return [];
}
n = (guard || n == null) ? 1 : n;
n = length - (+n || 0);
n = (guard || n == null) ? 1 : toInteger(n);
n = length - n;
return baseSlice(array, 0, n < 0 ? 0 : n);
}
@@ -4623,6 +4637,7 @@
return -1;
}
if (typeof fromIndex == 'number') {
fromIndex = toInteger(fromIndex);
fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex;
} else if (fromIndex) {
var index = binaryIndex(array, value);
@@ -4753,7 +4768,8 @@
}
var index = length;
if (typeof fromIndex == 'number') {
index = (fromIndex < 0 ? nativeMax(length + fromIndex, 0) : nativeMin(fromIndex || 0, length - 1)) + 1;
index = toInteger(fromIndex);
index = (index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1)) + 1;
} else if (fromIndex) {
index = binaryIndex(array, value, true) - 1;
var other = array[index];
@@ -5090,8 +5106,8 @@
if (!length) {
return [];
}
n = (guard || n == null) ? 1 : n;
n = length - (+n || 0);
n = (guard || n == null) ? 1 : toInteger(n);
n = length - n;
return baseSlice(array, n < 0 ? 0 : n);
}
@@ -6055,7 +6071,8 @@
if (guard || typeof fromIndex != 'number') {
fromIndex = 0;
} else {
fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
fromIndex = toInteger(fromIndex);
fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex;
}
return (typeof collection == 'string' || !isArray(collection) && isString(collection))
? (fromIndex <= length && collection.indexOf(target, fromIndex) > -1)
@@ -6357,7 +6374,7 @@
length = result.length,
lastIndex = length - 1;
n = nativeMin(n < 0 ? 0 : (+n || 0), length);
n = nativeMin(n < 0 ? 0 : toInteger(n), length);
while (++index < n) {
var rand = baseRandom(index, lastIndex),
value = result[rand];
@@ -6627,7 +6644,7 @@
*/
function ary(func, n, guard) {
n = guard ? undefined : n;
n = (func && n == null) ? func.length : nativeMax(+n || 0, 0);
n = (func && n == null) ? func.length : n;
return createWrapper(func, ARY_FLAG, undefined, undefined, undefined, undefined, n);
}
@@ -7442,7 +7459,7 @@
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
start = nativeMax(start === undefined ? (func.length - 1) : (+start || 0), 0);
start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0);
return function() {
var args = arguments,
index = -1,
@@ -9742,7 +9759,7 @@
var length = string.length;
position = position === undefined
? length
: nativeMin(position < 0 ? 0 : (+position || 0), length);
: nativeMin(position < 0 ? 0 : toInteger(position), length);
position -= target.length;
return position >= 0 && string.indexOf(target, position) == position;
@@ -10069,7 +10086,7 @@
string = baseToString(string);
position = position == null
? 0
: nativeMin(position < 0 ? 0 : (+position || 0), string.length);
: nativeMin(position < 0 ? 0 : toInteger(position), string.length);
return string.lastIndexOf(target, position) == position;
}
@@ -10412,7 +10429,7 @@
if (isObject(options)) {
var separator = 'separator' in options ? options.separator : separator;
length = 'length' in options ? (+options.length || 0) : length;
length = 'length' in options ? toInteger(options.length) : length;
omission = 'omission' in options ? baseToString(options.omission) : omission;
}
string = baseToString(string);
@@ -11549,7 +11566,7 @@
if (filtered && !index) {
return new LazyWrapper(this);
}
n = n == null ? 1 : nativeMax(nativeFloor(n) || 0, 0);
n = n == null ? 1 : nativeMax(toInteger(n), 0);
var result = this.clone();
if (filtered) {
@@ -11616,7 +11633,7 @@
};
LazyWrapper.prototype.slice = function(start, end) {
start = start == null ? 0 : (+start || 0);
start = start == null ? 0 : toInteger(start);
var result = this;
if (result.__filtered__ && (start > 0 || end < 0)) {
@@ -11628,7 +11645,7 @@
result = result.drop(start);
}
if (end !== undefined) {
end = (+end || 0);
end = toInteger(end);
result = end < 0 ? result.dropRight(-end) : result.take(end - start);
}
return result;