ut2/lib/isMatch.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

'use strict';

var allKeys = require('./allKeys.js');
var getTag = require('./internals/getTag.js');
var native = require('./internals/native.js');
var isEqualDeep = require('./internals/isEqualDeep.js');

function isDeepComparable(object, source) {
    return getTag(object) === native.objectTag && getTag(source) === native.objectTag;
}
function baseIsMatch(object, source, customizer, strictCheck, objStack, srcStack) {
    var hasCustomizer = typeof customizer === 'function';
    if (isDeepComparable(object, source)) {
        objStack = objStack || [];
        srcStack = srcStack || [];
        var stackLen = objStack.length;
        while (stackLen--) {
            if (objStack[stackLen] === object && srcStack[stackLen] === source) {
                return true;
            }
        }
        objStack.push(object);
        srcStack.push(source);
        var keys = allKeys(source);
        var length_1 = keys.length;
        while (length_1--) {
            var key = keys[length_1];
            if (!(key in object)) {
                return false;
            }
            if (hasCustomizer) {
                var compared = customizer(object[key], source[key], key, object, source, objStack, srcStack);
                if (compared !== native.nativeUndefined) {
                    if (!compared) {
                        return false;
                    }
                    continue;
                }
            }
            if (!baseIsMatch(object[key], source[key], customizer, strictCheck, objStack, srcStack)) {
                return false;
            }
        }
        objStack.pop();
        srcStack.pop();
        return true;
    }
    var result = isEqualDeep(object, source, function (objValue, srcValue, k, obj, src) {
        if (hasCustomizer) {
            var compared = customizer(objValue, srcValue, k, obj, src, objStack, srcStack);
            if (compared !== native.nativeUndefined) {
                return compared;
            }
        }
        if (isDeepComparable(objValue, srcValue)) {
            return baseIsMatch(objValue, srcValue, customizer, strictCheck, objStack, srcStack);
        }
    }, strictCheck, objStack, srcStack);
    return result;
}
function isMatch(object, source, customizer, strictCheck) {
    if (strictCheck === void 0) { strictCheck = false; }
    if (typeof customizer === 'function') {
        var compared = customizer(object, source);
        if (compared !== native.nativeUndefined) {
            return !!compared;
        }
    }
    return baseIsMatch(object, source, customizer, strictCheck, native.nativeUndefined, native.nativeUndefined);
}

module.exports = isMatch;