1var isLaziable = require('./_isLaziable'), 2 setData = require('./_setData'), 3 setWrapToString = require('./_setWrapToString'); 4 5/** Used to compose bitmasks for function metadata. */ 6var WRAP_BIND_FLAG = 1, 7 WRAP_BIND_KEY_FLAG = 2, 8 WRAP_CURRY_BOUND_FLAG = 4, 9 WRAP_CURRY_FLAG = 8, 10 WRAP_PARTIAL_FLAG = 32, 11 WRAP_PARTIAL_RIGHT_FLAG = 64; 12 13/** 14 * Creates a function that wraps `func` to continue currying. 15 * 16 * @private 17 * @param {Function} func The function to wrap. 18 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. 19 * @param {Function} wrapFunc The function to create the `func` wrapper. 20 * @param {*} placeholder The placeholder value. 21 * @param {*} [thisArg] The `this` binding of `func`. 22 * @param {Array} [partials] The arguments to prepend to those provided to 23 * the new function. 24 * @param {Array} [holders] The `partials` placeholder indexes. 25 * @param {Array} [argPos] The argument positions of the new function. 26 * @param {number} [ary] The arity cap of `func`. 27 * @param {number} [arity] The arity of `func`. 28 * @returns {Function} Returns the new wrapped function. 29 */ 30function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) { 31 var isCurry = bitmask & WRAP_CURRY_FLAG, 32 newHolders = isCurry ? holders : undefined, 33 newHoldersRight = isCurry ? undefined : holders, 34 newPartials = isCurry ? partials : undefined, 35 newPartialsRight = isCurry ? undefined : partials; 36 37 bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG); 38 bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG); 39 40 if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) { 41 bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG); 42 } 43 var newData = [ 44 func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, 45 newHoldersRight, argPos, ary, arity 46 ]; 47 48 var result = wrapFunc.apply(undefined, newData); 49 if (isLaziable(func)) { 50 setData(result, newData); 51 } 52 result.placeholder = placeholder; 53 return setWrapToString(result, func, bitmask); 54} 55 56module.exports = createRecurry; 57