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- var baseSetData = require('./_baseSetData'),
- createBind = require('./_createBind'),
- createCurry = require('./_createCurry'),
- createHybrid = require('./_createHybrid'),
- createPartial = require('./_createPartial'),
- getData = require('./_getData'),
- mergeData = require('./_mergeData'),
- setData = require('./_setData'),
- setWrapToString = require('./_setWrapToString'),
- toInteger = require('./toInteger');
- var FUNC_ERROR_TEXT = 'Expected a function';
- var WRAP_BIND_FLAG = 1,
- WRAP_BIND_KEY_FLAG = 2,
- WRAP_CURRY_FLAG = 8,
- WRAP_CURRY_RIGHT_FLAG = 16,
- WRAP_PARTIAL_FLAG = 32,
- WRAP_PARTIAL_RIGHT_FLAG = 64;
- var nativeMax = Math.max;
- function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
- var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
- if (!isBindKey && typeof func != 'function') {
- throw new TypeError(FUNC_ERROR_TEXT);
- }
- var length = partials ? partials.length : 0;
- if (!length) {
- bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
- partials = holders = undefined;
- }
- ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
- arity = arity === undefined ? arity : toInteger(arity);
- length -= holders ? holders.length : 0;
- if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
- var partialsRight = partials,
- holdersRight = holders;
- partials = holders = undefined;
- }
- var data = isBindKey ? undefined : getData(func);
- var newData = [
- func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
- argPos, ary, arity
- ];
- if (data) {
- mergeData(newData, data);
- }
- func = newData[0];
- bitmask = newData[1];
- thisArg = newData[2];
- partials = newData[3];
- holders = newData[4];
- arity = newData[9] = newData[9] === undefined
- ? (isBindKey ? 0 : func.length)
- : nativeMax(newData[9] - length, 0);
- if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
- bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
- }
- if (!bitmask || bitmask == WRAP_BIND_FLAG) {
- var result = createBind(func, bitmask, thisArg);
- } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
- result = createCurry(func, bitmask, arity);
- } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
- result = createPartial(func, bitmask, thisArg, partials);
- } else {
- result = createHybrid.apply(undefined, newData);
- }
- var setter = data ? baseSetData : setData;
- return setWrapToString(setter(result, newData), func, bitmask);
- }
- module.exports = createWrap;
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