You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
3.6 KiB
107 lines
3.6 KiB
4 years ago
|
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');
|
||
|
|
|
||
|
|
/** Error message constants. */
|
||
|
|
var FUNC_ERROR_TEXT = 'Expected a function';
|
||
|
|
|
||
|
|
/** 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_PARTIAL_FLAG = 32,
|
||
|
|
WRAP_PARTIAL_RIGHT_FLAG = 64;
|
||
|
|
|
||
|
|
/* Built-in method references for those with the same name as other `lodash` methods. */
|
||
|
|
var nativeMax = Math.max;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a function that either curries or invokes `func` with optional
|
||
|
|
* `this` binding and partially applied arguments.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {Function|string} func The function or method name to wrap.
|
||
|
|
* @param {number} bitmask The bitmask flags.
|
||
|
|
* 1 - `_.bind`
|
||
|
|
* 2 - `_.bindKey`
|
||
|
|
* 4 - `_.curry` or `_.curryRight` of a bound function
|
||
|
|
* 8 - `_.curry`
|
||
|
|
* 16 - `_.curryRight`
|
||
|
|
* 32 - `_.partial`
|
||
|
|
* 64 - `_.partialRight`
|
||
|
|
* 128 - `_.rearg`
|
||
|
|
* 256 - `_.ary`
|
||
|
|
* 512 - `_.flip`
|
||
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
||
|
|
* @param {Array} [partials] The arguments to be partially applied.
|
||
|
|
* @param {Array} [holders] The `partials` 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 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;
|