forked from zhurui/management
93 lines
3.2 KiB
JavaScript
93 lines
3.2 KiB
JavaScript
|
var composeArgs = require('./_composeArgs'),
|
||
|
|
composeArgsRight = require('./_composeArgsRight'),
|
||
|
|
countHolders = require('./_countHolders'),
|
||
|
|
createCtor = require('./_createCtor'),
|
||
|
|
createRecurry = require('./_createRecurry'),
|
||
|
|
getHolder = require('./_getHolder'),
|
||
|
|
reorder = require('./_reorder'),
|
||
|
|
replaceHolders = require('./_replaceHolders'),
|
||
|
|
root = require('./_root');
|
||
|
|
|
||
|
|
/** Used to compose bitmasks for function metadata. */
|
||
|
|
var WRAP_BIND_FLAG = 1,
|
||
|
|
WRAP_BIND_KEY_FLAG = 2,
|
||
|
|
WRAP_CURRY_FLAG = 8,
|
||
|
|
WRAP_CURRY_RIGHT_FLAG = 16,
|
||
|
|
WRAP_ARY_FLAG = 128,
|
||
|
|
WRAP_FLIP_FLAG = 512;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a function that wraps `func` to invoke it with optional `this`
|
||
|
|
* binding of `thisArg`, partial application, and currying.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {Function|string} func The function or method name to wrap.
|
||
|
|
* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
|
||
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
||
|
|
* @param {Array} [partials] The arguments to prepend to those provided to
|
||
|
|
* the new function.
|
||
|
|
* @param {Array} [holders] The `partials` placeholder indexes.
|
||
|
|
* @param {Array} [partialsRight] The arguments to append to those provided
|
||
|
|
* to the new function.
|
||
|
|
* @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
|
||
|
|
* @param {Array} [argPos] The argument positions of the new function.
|
||
|
|
* @param {number} [ary] The arity cap of `func`.
|
||
|
|
* @param {number} [arity] The arity of `func`.
|
||
|
|
* @returns {Function} Returns the new wrapped function.
|
||
|
|
*/
|
||
|
|
function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
|
||
|
|
var isAry = bitmask & WRAP_ARY_FLAG,
|
||
|
|
isBind = bitmask & WRAP_BIND_FLAG,
|
||
|
|
isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
|
||
|
|
isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
|
||
|
|
isFlip = bitmask & WRAP_FLIP_FLAG,
|
||
|
|
Ctor = isBindKey ? undefined : createCtor(func);
|
||
|
|
|
||
|
|
function wrapper() {
|
||
|
|
var length = arguments.length,
|
||
|
|
args = Array(length),
|
||
|
|
index = length;
|
||
|
|
|
||
|
|
while (index--) {
|
||
|
|
args[index] = arguments[index];
|
||
|
|
}
|
||
|
|
if (isCurried) {
|
||
|
|
var placeholder = getHolder(wrapper),
|
||
|
|
holdersCount = countHolders(args, placeholder);
|
||
|
|
}
|
||
|
|
if (partials) {
|
||
|
|
args = composeArgs(args, partials, holders, isCurried);
|
||
|
|
}
|
||
|
|
if (partialsRight) {
|
||
|
|
args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
|
||
|
|
}
|
||
|
|
length -= holdersCount;
|
||
|
|
if (isCurried && length < arity) {
|
||
|
|
var newHolders = replaceHolders(args, placeholder);
|
||
|
|
return createRecurry(
|
||
|
|
func, bitmask, createHybrid, wrapper.placeholder, thisArg,
|
||
|
|
args, newHolders, argPos, ary, arity - length
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var thisBinding = isBind ? thisArg : this,
|
||
|
|
fn = isBindKey ? thisBinding[func] : func;
|
||
|
|
|
||
|
|
length = args.length;
|
||
|
|
if (argPos) {
|
||
|
|
args = reorder(args, argPos);
|
||
|
|
} else if (isFlip && length > 1) {
|
||
|
|
args.reverse();
|
||
|
|
}
|
||
|
|
if (isAry && ary < length) {
|
||
|
|
args.length = ary;
|
||
|
|
}
|
||
|
|
if (this && this !== root && this instanceof wrapper) {
|
||
|
|
fn = Ctor || createCtor(fn);
|
||
|
|
}
|
||
|
|
return fn.apply(thisBinding, args);
|
||
|
|
}
|
||
|
|
return wrapper;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = createHybrid;
|