123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 |
- var baseWrapperValue = require('./_baseWrapperValue'),
- getView = require('./_getView'),
- isArray = require('./isArray');
- /** 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;
- }
- module.exports = lazyValue;
|