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Use baseEach, baseForOwn and baseForIn to reduce dependencies on baseCreateCallback.

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This commit is contained in:
John-David Dalton
2014-01-19 12:10:09 -08:00
parent 55cbb12701
commit 677fb93494
7 changed files with 491 additions and 412 deletions
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188
dist/lodash.underscore.js vendored
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@@ -579,6 +579,31 @@
return result;
}
/**
* The base implementation of `_.forEach` without support for callback
* shorthands or `thisArg` binding.
*
* @private
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} callback The function called per iteration.
* @returns {Array|Object|string} Returns `collection`.
*/
function baseEach(collection, callback) {
var index = -1,
iterable = collection,
length = collection ? collection.length : 0;
if (typeof length == 'number') {
while (++index < length) {
if (callback(iterable[index], index, collection) === breakIndicator) {
break;
}
}
} else {
baseForOwn(collection, callback);
}
}
/**
* The base implementation of `_.flatten` without support for callback
* shorthands or `thisArg` binding.
@@ -619,6 +644,29 @@
return result;
}
/**
* The base implementation of `_.forOwn` without support for callback
* shorthands or `thisArg` binding.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} callback The function called per iteration.
* @returns {Object} Returns `object`.
*/
function baseForOwn(object, callback) {
var index = -1,
props = keys(object),
length = props.length;
while (++index < length) {
var key = props[index];
if (callback(object[key], key, object) === breakIndicator) {
break;
}
}
return object;
}
/**
* The base implementation of `_.isEqual`, without support for `thisArg` binding,
* that allows partial "_.where" style comparisons.
@@ -724,7 +772,7 @@
}
}
else {
forIn(b, function(value, key, b) {
baseForIn(b, function(value, key, b) {
if (hasOwnProperty.call(b, key)) {
size++;
return !(result = hasOwnProperty.call(a, key) && baseIsEqual(a[key], value, stackA, stackB)) && breakIndicator;
@@ -732,7 +780,7 @@
});
if (result) {
forIn(a, function(value, key, a) {
baseForIn(a, function(value, key, a) {
if (hasOwnProperty.call(a, key)) {
return !(result = --size > -1) && breakIndicator;
}
@@ -815,7 +863,7 @@
setter(result, value, callback(value, index, collection), collection);
}
} else {
forOwn(collection, function(value, key, collection) {
baseEach(collection, function(value, key, collection) {
setter(result, value, callback(value, key, collection), collection);
});
}
@@ -923,6 +971,28 @@
};
}
/**
* The base implementation of `_.forIn` without support for callback
* shorthands or `thisArg` binding.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} callback The function called per iteration.
* @returns {Object} Returns `object`.
*/
var baseForIn = function(object, callback) {
var result = object;
if (!isObject(object)) {
return result;
}
for (var key in object) {
if (callback(object[key], key, object) === breakIndicator) {
return result;
}
}
return result;
};
/**
* A fallback implementation of `Object.keys` which produces an array of the
* given object's own enumerable property names.
@@ -1926,7 +1996,7 @@
if (length && typeof length == 'number') {
result = indexOf(collection, target) > -1;
} else {
forOwn(collection, function(value) {
baseEach(collection, function(value) {
return (result = value === target) && breakIndicator;
});
}
@@ -2026,7 +2096,7 @@
}
}
} else {
forOwn(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
return !(result = !!callback(value, index, collection)) && breakIndicator;
});
}
@@ -2088,7 +2158,7 @@
}
}
} else {
forOwn(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
if (callback(value, index, collection)) {
result.push(value);
}
@@ -2155,7 +2225,7 @@
}
} else {
var result;
forOwn(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
if (callback(value, index, collection)) {
result = value;
return breakIndicator;
@@ -2230,7 +2300,7 @@
}
}
} else {
forOwn(collection, callback);
baseEach(collection, callback);
}
}
@@ -2262,7 +2332,7 @@
} else {
var props = keys(collection);
length = props.length;
forOwn(collection, function(value, key, collection) {
baseEach(collection, function(value, key, collection) {
key = props ? props[--length] : --length;
return callback(collection[key], key, collection) === false && breakIndicator;
});
@@ -2384,7 +2454,7 @@
length = collection ? collection.length : 0,
result = Array(typeof length == 'number' ? length : 0);
forEach(collection, function(value) {
baseEach(collection, function(value) {
result[++index] = (isFunc ? methodName : value[methodName]).apply(value, args);
});
return result;
@@ -2441,7 +2511,7 @@
}
} else {
result = [];
forOwn(collection, function(value, key, collection) {
baseEach(collection, function(value, key, collection) {
result[++index] = callback(value, key, collection);
});
}
@@ -2511,7 +2581,7 @@
} else {
callback = createCallback(callback, thisArg, 3);
forEach(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
var current = callback(value, index, collection);
if (current > computed) {
computed = current;
@@ -2585,7 +2655,7 @@
} else {
callback = createCallback(callback, thisArg, 3);
forEach(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
var current = callback(value, index, collection);
if (current < computed) {
computed = current;
@@ -2663,7 +2733,7 @@
accumulator = callback(accumulator, collection[index], index, collection);
}
} else {
forOwn(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
accumulator = noaccum
? (noaccum = false, value)
: callback(accumulator, value, index, collection)
@@ -2797,7 +2867,7 @@
length = collection ? collection.length : 0,
result = Array(typeof length == 'number' ? length : 0);
forEach(collection, function(value) {
baseEach(collection, function(value) {
var rand = baseRandom(0, ++index);
result[index] = result[rand];
result[rand] = value;
@@ -2887,7 +2957,7 @@
}
}
} else {
forOwn(collection, function(value, index, collection) {
baseEach(collection, function(value, index, collection) {
return (result = callback(value, index, collection)) && breakIndicator;
});
}
@@ -3692,84 +3762,6 @@
return object;
}
/**
* Iterates over own and inherited enumerable properties of an object,
* executing the callback for each property. The callback is bound to `thisArg`
* and invoked with three arguments; (value, key, object). Callbacks may exit
* iteration early by explicitly returning `false`.
*
* @static
* @memberOf _
* @type Function
* @category Objects
* @param {Object} object The object to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns `object`.
* @example
*
* function Shape() {
* this.x = 0;
* this.y = 0;
* }
*
* Shape.prototype.move = function(x, y) {
* this.x += x;
* this.y += y;
* };
*
* _.forIn(new Shape, function(value, key) {
* console.log(key);
* });
* // => logs 'x', 'y', and 'move' (property order is not guaranteed across environments)
*/
var forIn = function(object, callback) {
var result = object;
if (!isObject(object)) {
return result;
}
for (var key in object) {
if (callback(object[key], key, object) === breakIndicator) {
return result;
}
}
return result;
};
/**
* Iterates over own enumerable properties of an object, executing the callback
* for each property. The callback is bound to `thisArg` and invoked with three
* arguments; (value, key, object). Callbacks may exit iteration early by
* explicitly returning `false`.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns `object`.
* @example
*
* _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
* console.log(key);
* });
* // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
*/
function forOwn(object, callback) {
var index = -1,
props = keys(object),
length = props.length;
while (++index < length) {
var key = props[index];
if (callback(object[key], key, object) === breakIndicator) {
break;
}
}
return object;
}
/**
* Creates a sorted array of property names of all enumerable properties,
* own and inherited, of `object` that have function values.
@@ -3787,7 +3779,7 @@
*/
function functions(object) {
var result = [];
forIn(object, function(value, key) {
baseForIn(object, function(value, key) {
if (isFunction(value)) {
result.push(key);
}
@@ -4265,7 +4257,7 @@
*/
function omit(object) {
var props = [];
forIn(object, function(value, key) {
baseForIn(object, function(value, key) {
props.push(key);
});
props = baseDifference(props, baseFlatten(arguments, true, false, 1));
@@ -5083,7 +5075,7 @@
lodash.prototype.value = wrapperValueOf;
// add `Array` mutator functions to the wrapper
forEach(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
baseEach(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
var func = arrayRef[methodName];
lodash.prototype[methodName] = function() {
var value = this.__wrapped__;
@@ -5099,7 +5091,7 @@
});
// add `Array` accessor functions to the wrapper
forEach(['concat', 'join', 'slice'], function(methodName) {
baseEach(['concat', 'join', 'slice'], function(methodName) {
var func = arrayRef[methodName];
lodash.prototype[methodName] = function() {
var value = this.__wrapped__,