00001 var baseSetData = require('./_baseSetData'),
00002 createBind = require('./_createBind'),
00003 createCurry = require('./_createCurry'),
00004 createHybrid = require('./_createHybrid'),
00005 createPartial = require('./_createPartial'),
00006 getData = require('./_getData'),
00007 mergeData = require('./_mergeData'),
00008 setData = require('./_setData'),
00009 setWrapToString = require('./_setWrapToString'),
00010 toInteger = require('./toInteger');
00011
00013 var FUNC_ERROR_TEXT = 'Expected a function';
00014
00016 var WRAP_BIND_FLAG = 1,
00017 WRAP_BIND_KEY_FLAG = 2,
00018 WRAP_CURRY_FLAG = 8,
00019 WRAP_CURRY_RIGHT_FLAG = 16,
00020 WRAP_PARTIAL_FLAG = 32,
00021 WRAP_PARTIAL_RIGHT_FLAG = 64;
00022
00023
00024 var nativeMax = Math.max;
00025
00051 function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
00052 var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
00053 if (!isBindKey && typeof func != 'function') {
00054 throw new TypeError(FUNC_ERROR_TEXT);
00055 }
00056 var length = partials ? partials.length : 0;
00057 if (!length) {
00058 bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
00059 partials = holders = undefined;
00060 }
00061 ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
00062 arity = arity === undefined ? arity : toInteger(arity);
00063 length -= holders ? holders.length : 0;
00064
00065 if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
00066 var partialsRight = partials,
00067 holdersRight = holders;
00068
00069 partials = holders = undefined;
00070 }
00071 var data = isBindKey ? undefined : getData(func);
00072
00073 var newData = [
00074 func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
00075 argPos, ary, arity
00076 ];
00077
00078 if (data) {
00079 mergeData(newData, data);
00080 }
00081 func = newData[0];
00082 bitmask = newData[1];
00083 thisArg = newData[2];
00084 partials = newData[3];
00085 holders = newData[4];
00086 arity = newData[9] = newData[9] === undefined
00087 ? (isBindKey ? 0 : func.length)
00088 : nativeMax(newData[9] - length, 0);
00089
00090 if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
00091 bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
00092 }
00093 if (!bitmask || bitmask == WRAP_BIND_FLAG) {
00094 var result = createBind(func, bitmask, thisArg);
00095 } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
00096 result = createCurry(func, bitmask, arity);
00097 } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
00098 result = createPartial(func, bitmask, thisArg, partials);
00099 } else {
00100 result = createHybrid.apply(undefined, newData);
00101 }
00102 var setter = data ? baseSetData : setData;
00103 return setWrapToString(setter(result, newData), func, bitmask);
00104 }
00105
00106 module.exports = createWrap;