time-to-botec

Benchmark sampling in different programming languages
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_createRecurry.js (2117B)

      1 var isLaziable = require('./_isLaziable'),
      2     setData = require('./_setData'),
      3     setWrapToString = require('./_setWrapToString');
      4 
      5 /** Used to compose bitmasks for function metadata. */
      6 var 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  */
     30 function 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 
     56 module.exports = createRecurry;