1 | var Stack = require('./_Stack'),
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2 | baseIsEqual = require('./_baseIsEqual');
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3 |
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4 | /** Used to compose bitmasks for value comparisons. */
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5 | var COMPARE_PARTIAL_FLAG = 1,
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6 | COMPARE_UNORDERED_FLAG = 2;
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7 |
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8 | /**
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9 | * The base implementation of `_.isMatch` without support for iteratee shorthands.
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10 | *
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11 | * @private
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12 | * @param {Object} object The object to inspect.
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13 | * @param {Object} source The object of property values to match.
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14 | * @param {Array} matchData The property names, values, and compare flags to match.
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15 | * @param {Function} [customizer] The function to customize comparisons.
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16 | * @returns {boolean} Returns `true` if `object` is a match, else `false`.
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17 | */
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18 | function baseIsMatch(object, source, matchData, customizer) {
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19 | var index = matchData.length,
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20 | length = index,
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21 | noCustomizer = !customizer;
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22 |
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23 | if (object == null) {
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24 | return !length;
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25 | }
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26 | object = Object(object);
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27 | while (index--) {
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28 | var data = matchData[index];
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29 | if ((noCustomizer && data[2])
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30 | ? data[1] !== object[data[0]]
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31 | : !(data[0] in object)
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32 | ) {
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33 | return false;
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34 | }
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35 | }
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36 | while (++index < length) {
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37 | data = matchData[index];
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38 | var key = data[0],
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39 | objValue = object[key],
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40 | srcValue = data[1];
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41 |
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42 | if (noCustomizer && data[2]) {
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43 | if (objValue === undefined && !(key in object)) {
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44 | return false;
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45 | }
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46 | } else {
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47 | var stack = new Stack;
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48 | if (customizer) {
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49 | var result = customizer(objValue, srcValue, key, object, source, stack);
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50 | }
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51 | if (!(result === undefined
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52 | ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
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53 | : result
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54 | )) {
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55 | return false;
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56 | }
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57 | }
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58 | }
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59 | return true;
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60 | }
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61 |
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62 | module.exports = baseIsMatch;
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