You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.7 KiB
69 lines
1.7 KiB
import baseWrapperValue from './_baseWrapperValue.js'; |
|
import getView from './_getView.js'; |
|
import isArray from './isArray.js'; |
|
|
|
/** Used to indicate the type of lazy iteratees. */ |
|
var LAZY_FILTER_FLAG = 1, |
|
LAZY_MAP_FLAG = 2; |
|
|
|
/* Built-in method references for those with the same name as other `lodash` methods. */ |
|
var nativeMin = Math.min; |
|
|
|
/** |
|
* Extracts the unwrapped value from its lazy wrapper. |
|
* |
|
* @private |
|
* @name value |
|
* @memberOf LazyWrapper |
|
* @returns {*} Returns the unwrapped value. |
|
*/ |
|
function lazyValue() { |
|
var array = this.__wrapped__.value(), |
|
dir = this.__dir__, |
|
isArr = isArray(array), |
|
isRight = dir < 0, |
|
arrLength = isArr ? array.length : 0, |
|
view = getView(0, arrLength, this.__views__), |
|
start = view.start, |
|
end = view.end, |
|
length = end - start, |
|
index = isRight ? end : (start - 1), |
|
iteratees = this.__iteratees__, |
|
iterLength = iteratees.length, |
|
resIndex = 0, |
|
takeCount = nativeMin(length, this.__takeCount__); |
|
|
|
if (!isArr || (!isRight && arrLength == length && takeCount == length)) { |
|
return baseWrapperValue(array, this.__actions__); |
|
} |
|
var result = []; |
|
|
|
outer: |
|
while (length-- && resIndex < takeCount) { |
|
index += dir; |
|
|
|
var iterIndex = -1, |
|
value = array[index]; |
|
|
|
while (++iterIndex < iterLength) { |
|
var data = iteratees[iterIndex], |
|
iteratee = data.iteratee, |
|
type = data.type, |
|
computed = iteratee(value); |
|
|
|
if (type == LAZY_MAP_FLAG) { |
|
value = computed; |
|
} else if (!computed) { |
|
if (type == LAZY_FILTER_FLAG) { |
|
continue outer; |
|
} else { |
|
break outer; |
|
} |
|
} |
|
} |
|
result[resIndex++] = value; |
|
} |
|
return result; |
|
} |
|
|
|
export default lazyValue;
|
|
|