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