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author | Florian Dold <florian.dold@gmail.com> | 2016-11-03 01:33:53 +0100 |
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committer | Florian Dold <florian.dold@gmail.com> | 2016-11-03 01:33:53 +0100 |
commit | d1291f67551c58168af43698a359cb5ddfd266b0 (patch) | |
tree | 55a13ed29fe1915e3f42f1b1b7038dafa2e975a7 /node_modules/lodash/_lazyValue.js | |
parent | d0a0695fb5d34996850723f7d4b1b59c3df909c2 (diff) | |
download | wallet-core-d1291f67551c58168af43698a359cb5ddfd266b0.tar.xz |
node_modules
Diffstat (limited to 'node_modules/lodash/_lazyValue.js')
-rw-r--r-- | node_modules/lodash/_lazyValue.js | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/node_modules/lodash/_lazyValue.js b/node_modules/lodash/_lazyValue.js new file mode 100644 index 000000000..09bf14b43 --- /dev/null +++ b/node_modules/lodash/_lazyValue.js @@ -0,0 +1,73 @@ +var baseWrapperValue = require('./_baseWrapperValue'), + getView = require('./_getView'), + isArray = require('./isArray'); + +/** Used as the size to enable large array optimizations. */ +var LARGE_ARRAY_SIZE = 200; + +/** 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 || arrLength < LARGE_ARRAY_SIZE || + (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; |