46 lines
1.4 KiB
JavaScript
Executable file
46 lines
1.4 KiB
JavaScript
Executable file
var apply = require('./_apply'),
|
|
createCtor = require('./_createCtor'),
|
|
createHybrid = require('./_createHybrid'),
|
|
createRecurry = require('./_createRecurry'),
|
|
getHolder = require('./_getHolder'),
|
|
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 flags. See `createWrap` for more details.
|
|
* @param {number} arity The arity of `func`.
|
|
* @returns {Function} Returns the new wrapped function.
|
|
*/
|
|
function createCurry(func, bitmask, arity) {
|
|
var Ctor = createCtor(func);
|
|
|
|
function wrapper() {
|
|
var length = arguments.length,
|
|
args = Array(length),
|
|
index = length,
|
|
placeholder = getHolder(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 createRecurry(
|
|
func, bitmask, createHybrid, 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 = createCurry;
|