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Cleanup createBound.

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Former-commit-id: f16e6df18a036507edea4b64618ffb06f3823a78
This commit is contained in:
John-David Dalton
2013-07-21 15:27:10 -07:00
parent 65227f601e
commit fcbeb10159
8 changed files with 1530 additions and 1338 deletions
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31
lodash.js
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@@ -1093,7 +1093,7 @@
* @param {Mixed} a The value to compare.
* @param {Mixed} b The other value to compare.
* @param {Function} [callback] The function to customize comparing values.
* @param {Function} [isWhere] A flag to indicate performing partial comparisons.
* @param {Function} [isWhere=false] A flag to indicate performing partial comparisons.
* @param {Array} [stackA=[]] Tracks traversed `a` objects.
* @param {Array} [stackB=[]] Tracks traversed `b` objects.
* @returns {Boolean} Returns `true`, if the values are equivalent, else `false`.
@@ -1378,15 +1378,18 @@
*
* @private
* @param {Function|String} func The function to bind or the method name.
* @param {Mixed} [thisArg] The `this` binding of `func`.
* @param {Array} partialArgs An array of arguments to be partially applied.
* @param {Object} [idicator] Used to indicate binding by key or partially
* applying arguments from the right.
* @param {Mixed} thisArg The `this` binding of `func`.
* @param {Array} partialArgs An array of arguments to be prepended to those passed to the new function.
* @param {Array} partialRightArgs An array of arguments to be appended to those passed to the new function.
* @param {Boolean} [isPartial=false] A flag to indicate performing only partial application.
* @param {Boolean} [isAlt=false] A flag to indicate `_.bindKey` or `_.partialRight` behavior.
* @returns {Function} Returns the new bound function.
*/
function createBound(func, thisArg, partialArgs, partialRightArgs, isPartial, isAlt) {
var isFunc = isFunction(func);
if (!isFunc && !(isAlt && !isPartial)) {
// except for `_.bindKey`, throw when `func` is not a function
if (!isFunc && (isPartial || !isAlt)) {
throw new TypeError;
}
var args = func.__bindData__,
@@ -1401,17 +1404,17 @@
}
return createBound.apply(null, args);
}
// juggle arguments
if (!isPartial && !isFunc) {
// juggle arguments for `_.bindKey`
if (!isPartial && isAlt) {
thisArg = func;
}
// use `Function#bind` if it exists and is fast
// (in V8 `Function#bind` is slower except when partially applied)
if (!isPartial && !isAlt && (support.fastBind || (nativeBind && partialArgs.length))) {
// use `Function#bind` if it exists and is fast
// (in V8 `Function#bind` is slower except when partially applied)
var result = nativeBind.call.apply(nativeBind, concat.call(arrayRef, func, thisArg, partialArgs));
var bound = nativeBind.call.apply(nativeBind, concat.call(arrayRef, func, thisArg, partialArgs));
}
else {
var result = function bound() {
bound = function() {
// `Function#bind` spec
// http://es5.github.io/#x15.3.4.5
var args = arguments,
@@ -1436,8 +1439,8 @@
return func.apply(thisBinding, args);
};
}
setBindData(result, nativeSlice.call(arguments));
return result
setBindData(bound, nativeSlice.call(arguments));
return bound;
}
/**