Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var isFunction = require( '@stdlib/assert/is-function' );
var isNonNegativeIntegerArray = require( '@stdlib/assert/is-nonnegative-integer-array' );
var format = require( '@stdlib/string/format' );
// MAIN //
/**
* Returns a function that invokes a provided function with reordered arguments.
*
* @param {Function} fcn - input function
* @param {NonNegativeIntegerArray} indices - argument indices
* @param {*} [thisArg] - function context
* @throws {TypeError} first argument must be a function
* @throws {TypeError} second argument must be an array of nonnegative integers
* @returns {Function} function with reordered arguments
*
* @example
* function foo( a, b, c ) {
* return [ a, b, c ];
* }
*
* var bar = reorderArguments( foo, [ 2, 0, 1 ] );
*
* var out = bar( 1, 2, 3 );
* // returns [ 3, 1, 2 ]
*/
function reorderArguments( fcn, indices, thisArg ) {
if ( !isFunction( fcn ) ) {
throw new TypeError( format( 'invalid argument. First argument must be a function. Value: `%s`.', fcn ) );
}
if ( !isNonNegativeIntegerArray( indices ) ) {
throw new TypeError( format( 'invalid argument. Second argument must be an array containing only nonnegative integers. Value: `%s`.', indices ) );
}
return reordered;
/**
* Invokes a function with reordered arguments.
*
* @private
* @param {...*} args - arguments
* @throws {Error} must provide expected number of input arguments
* @returns {*} return value
*/
function reordered() {
var args;
var len;
var i;
len = arguments.length;
if ( len !== indices.length ) {
throw new Error( format( 'invalid invocation. Unexpected number of input arguments. Expected: `%u`. Actual: `%u`.', indices.length, len ) );
}
args = [];
for ( i = 0; i < len; i++ ) {
args.push( arguments[ indices[i] ] );
}
return fcn.apply( thisArg, args );
}
}
// EXPORTS //
module.exports = reorderArguments;
|