57 lines
2.0 KiB
JavaScript
57 lines
2.0 KiB
JavaScript
|
var isLaziable = require('./_isLaziable'),
|
||
|
|
setData = require('./_setData'),
|
||
|
|
setWrapToString = require('./_setWrapToString');
|
||
|
|
|
||
|
|
/** Used to compose bitmasks for function metadata. */
|
||
|
|
var BIND_FLAG = 1,
|
||
|
|
BIND_KEY_FLAG = 2,
|
||
|
|
CURRY_BOUND_FLAG = 4,
|
||
|
|
CURRY_FLAG = 8,
|
||
|
|
PARTIAL_FLAG = 32,
|
||
|
|
PARTIAL_RIGHT_FLAG = 64;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a function that wraps `func` to continue currying.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {Function} func The function to wrap.
|
||
|
|
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
|
||
|
|
* @param {Function} wrapFunc The function to create the `func` wrapper.
|
||
|
|
* @param {*} placeholder The placeholder value.
|
||
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
||
|
|
* @param {Array} [partials] The arguments to prepend to those provided to
|
||
|
|
* the new function.
|
||
|
|
* @param {Array} [holders] The `partials` placeholder indexes.
|
||
|
|
* @param {Array} [argPos] The argument positions of the new function.
|
||
|
|
* @param {number} [ary] The arity cap of `func`.
|
||
|
|
* @param {number} [arity] The arity of `func`.
|
||
|
|
* @returns {Function} Returns the new wrapped function.
|
||
|
|
*/
|
||
|
|
function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
|
||
|
|
var isCurry = bitmask & CURRY_FLAG,
|
||
|
|
newHolders = isCurry ? holders : undefined,
|
||
|
|
newHoldersRight = isCurry ? undefined : holders,
|
||
|
|
newPartials = isCurry ? partials : undefined,
|
||
|
|
newPartialsRight = isCurry ? undefined : partials;
|
||
|
|
|
||
|
|
bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG);
|
||
|
|
bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG);
|
||
|
|
|
||
|
|
if (!(bitmask & CURRY_BOUND_FLAG)) {
|
||
|
|
bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
|
||
|
|
}
|
||
|
|
var newData = [
|
||
|
|
func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
|
||
|
|
newHoldersRight, argPos, ary, arity
|
||
|
|
];
|
||
|
|
|
||
|
|
var result = wrapFunc.apply(undefined, newData);
|
||
|
|
if (isLaziable(func)) {
|
||
|
|
setData(result, newData);
|
||
|
|
}
|
||
|
|
result.placeholder = placeholder;
|
||
|
|
return setWrapToString(result, func, bitmask);
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = createRecurry;
|