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Adjust lazy eval heuristic.

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jdalton
2015-06-04 09:40:30 -07:00
parent c89fe8bdbc
commit 224a6c1e7c
2 changed files with 25 additions and 19 deletions
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40
lodash.src.js
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@@ -1162,22 +1162,25 @@
* @returns {*} Returns the unwrapped value.
*/
function lazyValue() {
var array = this.__wrapped__.value();
if (!isArray(array)) {
return baseWrapperValue(array, this.__actions__);
}
var dir = this.__dir__,
var array = this.__wrapped__.value(),
dir = this.__dir__,
isArr = isArray(array),
isRight = dir < 0,
view = getView(0, array.length, this.__views__),
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),
takeCount = nativeMin(length, this.__takeCount__),
iteratees = this.__iteratees__,
iterLength = iteratees.length,
resIndex = 0,
result = [];
takeCount = nativeMin(length, this.__takeCount__);
if (!isArr || (iterLength < 2 && arrLength == length && takeCount == length)) {
return baseWrapperValue(isRight ? array.reverse() : array, this.__actions__);
}
var result = [];
outer:
while (length-- && resIndex < takeCount) {
@@ -3419,12 +3422,14 @@
}
}
return function() {
var args = arguments;
if (wrapper && args.length == 1 && isArray(args[0])) {
return wrapper.plant(args[0]).value();
var args = arguments,
value = args[0];
if (wrapper && args.length == 1 && isArray(value)) {
return wrapper.plant(value).value();
}
var index = 0,
result = length ? funcs[index].apply(this, args) : args[0];
result = length ? funcs[index].apply(this, args) : value;
while (++index < length) {
result = funcs[index].call(this, result);
@@ -6167,15 +6172,16 @@
var value = this.__wrapped__;
var interceptor = function(value) {
return value.reverse();
return (wrapped && wrapped.__dir__ < 0) ? value : value.reverse();
};
if (value instanceof LazyWrapper) {
var wrapped = value;
if (this.__actions__.length) {
value = new LazyWrapper(this);
wrapped = new LazyWrapper(this);
}
value = value.reverse();
value.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': lodash });
return new LodashWrapper(value, this.__chain__);
wrapped = wrapped.reverse();
wrapped.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': lodash });
return new LodashWrapper(wrapped, this.__chain__);
}
return this.thru(interceptor);
}

4
test/test.js
View File

@@ -2240,7 +2240,7 @@
: fn(take2, _.compact, filter2, map2);
filterCount = mapCount = 0;
deepEqual(combined(_.range(100)), [4, 16]);
deepEqual(combined(_.range(200)), [4, 16]);
if (!isNpm && WeakMap && WeakMap.name) {
strictEqual(filterCount, 5, 'filterCount');
@@ -4050,7 +4050,7 @@
args = slice.call(arguments);
}).value();
deepEqual(args, [16]);
deepEqual(args, expected);
_(array).map(square).dropRightWhile(function() {
args = slice.call(arguments);