1 | var apply = require('./_apply'),
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2 | arrayMap = require('./_arrayMap'),
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3 | baseFlatten = require('./_baseFlatten'),
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4 | baseIteratee = require('./_baseIteratee'),
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5 | baseRest = require('./_baseRest'),
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6 | baseUnary = require('./_baseUnary'),
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7 | castRest = require('./_castRest'),
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8 | isArray = require('./isArray');
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9 |
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10 | /* Built-in method references for those with the same name as other `lodash` methods. */
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11 | var nativeMin = Math.min;
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12 |
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13 | /**
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14 | * Creates a function that invokes `func` with its arguments transformed.
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15 | *
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16 | * @static
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17 | * @since 4.0.0
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18 | * @memberOf _
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19 | * @category Function
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20 | * @param {Function} func The function to wrap.
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21 | * @param {...(Function|Function[])} [transforms=[_.identity]]
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22 | * The argument transforms.
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23 | * @returns {Function} Returns the new function.
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24 | * @example
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25 | *
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26 | * function doubled(n) {
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27 | * return n * 2;
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28 | * }
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29 | *
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30 | * function square(n) {
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31 | * return n * n;
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32 | * }
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33 | *
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34 | * var func = _.overArgs(function(x, y) {
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35 | * return [x, y];
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36 | * }, [square, doubled]);
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37 | *
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38 | * func(9, 3);
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39 | * // => [81, 6]
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40 | *
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41 | * func(10, 5);
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42 | * // => [100, 10]
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43 | */
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44 | var overArgs = castRest(function(func, transforms) {
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45 | transforms = (transforms.length == 1 && isArray(transforms[0]))
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46 | ? arrayMap(transforms[0], baseUnary(baseIteratee))
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47 | : arrayMap(baseFlatten(transforms, 1), baseUnary(baseIteratee));
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48 |
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49 | var funcsLength = transforms.length;
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50 | return baseRest(function(args) {
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51 | var index = -1,
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52 | length = nativeMin(args.length, funcsLength);
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53 |
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54 | while (++index < length) {
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55 | args[index] = transforms[index].call(this, args[index]);
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56 | }
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57 | return apply(func, this, args);
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58 | });
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59 | });
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60 |
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61 | module.exports = overArgs;
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