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var apply = require('./_apply'),
createCtorWrapper = require('./_createCtorWrapper'),
createHybridWrapper = require('./_createHybridWrapper'),
createRecurryWrapper = require('./_createRecurryWrapper'),
getPlaceholder = require('./_getPlaceholder'),
replaceHolders = require('./_replaceHolders'),
root = require('./_root');
/**
* Creates a function that wraps `func` to enable currying.
*
* @private
* @param {Function} func The function to wrap.
* @param {number} bitmask The bitmask of wrapper flags. See `createWrapper`
* for more details.
* @param {number} arity The arity of `func`.
* @returns {Function} Returns the new wrapped function.
*/
function createCurryWrapper(func, bitmask, arity) {
var Ctor = createCtorWrapper(func);
function wrapper() {
var length = arguments.length,
args = Array(length),
index = length,
placeholder = getPlaceholder(wrapper);
while (index--) {
args[index] = arguments[index];
}
var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
? []
: replaceHolders(args, placeholder);
length -= holders.length;
if (length < arity) {
return createRecurryWrapper(
func, bitmask, createHybridWrapper, wrapper.placeholder, undefined,
args, holders, undefined, undefined, arity - length);
}
var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
return apply(fn, this, args);
}
return wrapper;
}
module.exports = createCurryWrapper;
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