'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

exports.buildPredicate = buildPredicate;
exports.reduceTreeBySelector = reduceTreeBySelector;
exports.reduceTreesBySelector = reduceTreesBySelector;

var _rstSelectorParser = require('rst-selector-parser');

var _object = require('object.values');

var _object2 = _interopRequireDefault(_object);

var _arrayPrototype = require('array.prototype.flat');

var _arrayPrototype2 = _interopRequireDefault(_arrayPrototype);

var _objectIs = require('object-is');

var _objectIs2 = _interopRequireDefault(_objectIs);

var _has = require('has');

var _has2 = _interopRequireDefault(_has);

var _byConstructor = require('html-element-map/byConstructor');

var _byConstructor2 = _interopRequireDefault(_byConstructor);

var _RSTTraversal = require('./RSTTraversal');

var _Utils = require('./Utils');

var _getAdapter = require('./getAdapter');

var _getAdapter2 = _interopRequireDefault(_getAdapter);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

// our CSS selector parser instance
var parser = (0, _rstSelectorParser.createParser)();

// Combinators that allow you to chance selectors
var CHILD = 'childCombinator';
var ADJACENT_SIBLING = 'adjacentSiblingCombinator';
var GENERAL_SIBLING = 'generalSiblingCombinator';
var DESCENDANT = 'descendantCombinator';

// Selectors for targeting elements
var SELECTOR = 'selector';
var TYPE_SELECTOR = 'typeSelector';
var CLASS_SELECTOR = 'classSelector';
var ID_SELECTOR = 'idSelector';
var UNIVERSAL_SELECTOR = 'universalSelector';
var ATTRIBUTE_PRESENCE = 'attributePresenceSelector';
var ATTRIBUTE_VALUE = 'attributeValueSelector';
// @TODO we dont support these, throw if they are used
var PSEUDO_CLASS = 'pseudoClassSelector';
var PSEUDO_ELEMENT = 'pseudoElementSelector';

var EXACT_ATTRIBUTE_OPERATOR = '=';
var WHITELIST_ATTRIBUTE_OPERATOR = '~=';
var HYPHENATED_ATTRIBUTE_OPERATOR = '|=';
var PREFIX_ATTRIBUTE_OPERATOR = '^=';
var SUFFIX_ATTRIBUTE_OPERATOR = '$=';
var SUBSTRING_ATTRIBUTE_OPERATOR = '*=';

function unique(arr) {
  return [].concat(_toConsumableArray(new Set(arr)));
}

/**
 * Calls reduce on a array of nodes with the passed
 * function, returning only unique results.
 * @param {Function} fn
 * @param {Array<Node>} nodes
 */
function uniqueReduce(fn, nodes) {
  return unique(nodes.reduce(fn, []));
}

/**
 * Takes a CSS selector and returns a set of tokens parsed
 * by scalpel.
 * @param {String} selector
 */
function safelyGenerateTokens(selector) {
  try {
    return parser.parse(selector);
  } catch (err) {
    throw new Error('Failed to parse selector: ' + String(selector));
  }
}

function matchAttributeSelector(node, token) {
  var operator = token.operator,
      value = token.value,
      name = token.name;

  var nodeProps = (0, _Utils.propsOfNode)(node);
  var descriptor = Object.getOwnPropertyDescriptor(nodeProps, name);
  if (descriptor && descriptor.get) {
    return false;
  }
  var nodePropValue = nodeProps[name];
  if (typeof nodePropValue === 'undefined') {
    return false;
  }
  if (token.type === ATTRIBUTE_PRESENCE) {
    return (0, _has2['default'])(nodeProps, token.name);
  }
  // Only the exact value operator ("=") can match non-strings
  if (typeof nodePropValue !== 'string' || typeof value !== 'string') {
    if (operator !== EXACT_ATTRIBUTE_OPERATOR) {
      return false;
    }
  }
  switch (operator) {
    /**
     * Represents an element with the att attribute whose value is exactly "val".
     * @example
     * [attr="val"] matches attr="val"
     */
    case EXACT_ATTRIBUTE_OPERATOR:
      return (0, _objectIs2['default'])(nodePropValue, value);
    /**
     * Represents an element with the att attribute whose value is a whitespace-separated
     * list of words, one of which is exactly
     * @example
     *  [rel~="copyright"] matches rel="copyright other"
     */
    case WHITELIST_ATTRIBUTE_OPERATOR:
      return nodePropValue.split(' ').indexOf(value) !== -1;
    /**
     * Represents an element with the att attribute, its value either being exactly the
     * value or beginning with the value immediately followed by "-"
     * @example
     * [hreflang|="en"] matches hreflang="en-US"
     */
    case HYPHENATED_ATTRIBUTE_OPERATOR:
      return nodePropValue === value || nodePropValue.startsWith(String(value) + '-');
    /**
     * Represents an element with the att attribute whose value begins with the prefix value.
     * If the value is the empty string then the selector does not represent anything.
     * @example
     * [type^="image"] matches type="imageobject"
     */
    case PREFIX_ATTRIBUTE_OPERATOR:
      return value === '' ? false : nodePropValue.slice(0, value.length) === value;
    /**
     * Represents an element with the att attribute whose value ends with the suffix value.
     * If the value is the empty string then the selector does not represent anything.
     * @example
     * [type$="image"] matches type="imageobject"
     */
    case SUFFIX_ATTRIBUTE_OPERATOR:
      return value === '' ? false : nodePropValue.slice(-value.length) === value;
    /**
     * Represents an element with the att attribute whose value contains at least one
     * instance of the value. If value is the empty string then the
     * selector does not represent anything.
     * @example
     * [title*="hello"] matches title="well hello there"
     */
    case SUBSTRING_ATTRIBUTE_OPERATOR:
      return value === '' ? false : nodePropValue.indexOf(value) !== -1;
    default:
      throw new Error('Enzyme::Selector: Unknown attribute selector operator "' + String(operator) + '"');
  }
}

function matchPseudoSelector(node, token, root) {
  var name = token.name,
      parameters = token.parameters;

  if (name === 'not') {
    // eslint-disable-next-line no-use-before-define
    return parameters.every(function (selector) {
      return reduceTreeBySelector(selector, node).length === 0;
    });
  }
  if (name === 'empty') {
    return (0, _RSTTraversal.treeFilter)(node, function (n) {
      return n !== node;
    }).length === 0;
  }
  if (name === 'first-child') {
    var _findParentNode = (0, _RSTTraversal.findParentNode)(root, node),
        rendered = _findParentNode.rendered;

    var _rendered = _slicedToArray(rendered, 1),
        firstChild = _rendered[0];

    return firstChild === node;
  }
  if (name === 'last-child') {
    var _findParentNode2 = (0, _RSTTraversal.findParentNode)(root, node),
        _rendered2 = _findParentNode2.rendered;

    return _rendered2[_rendered2.length - 1] === node;
  }
  if (name === 'focus') {
    if (typeof document === 'undefined') {
      throw new Error('Enzyme::Selector does not support the ":focus" pseudo-element without a global `document`.');
    }
    var adapter = (0, _getAdapter2['default'])();
    /* eslint-env browser */
    return document.activeElement && adapter.nodeToHostNode(node) === document.activeElement;
  }

  throw new TypeError('Enzyme::Selector does not support the "' + String(token.name) + '" pseudo-element or pseudo-class selectors.');
}

/**
 * Takes a node and a token and determines if the node
 * matches the predicate defined by the token.
 * @param {Node} node
 * @param {Token} token
 */
function nodeMatchesToken(node, token, root) {
  if (node === null || typeof node === 'string') {
    return false;
  }
  switch (token.type) {
    /**
     * Match every node
     * @example '*' matches every node
     */
    case UNIVERSAL_SELECTOR:
      return true;
    /**
     * Match against the className prop
     * @example '.active' matches <div className='active' />
     */
    case CLASS_SELECTOR:
      return (0, _RSTTraversal.hasClassName)(node, token.name);
    /**
     * Simple type matching
     * @example 'div' matches <div />
     */
    case TYPE_SELECTOR:
      return (0, _Utils.nodeHasType)(node, token.name);
    /**
     * Match against the `id` prop
     * @example '#nav' matches <ul id="nav" />
     */
    case ID_SELECTOR:
      return (0, _RSTTraversal.nodeHasId)(node, token.name);
    /**
     * Matches if an attribute is present, regardless
     * of its value
     * @example '[disabled]' matches <a disabled />
     */
    case ATTRIBUTE_PRESENCE:
      return matchAttributeSelector(node, token);
    /**
     * Matches if an attribute is present with the
     * provided value
     * @example '[data-foo=foo]' matches <div data-foo="foo" />
     */
    case ATTRIBUTE_VALUE:
      return matchAttributeSelector(node, token);
    case PSEUDO_ELEMENT:
    case PSEUDO_CLASS:
      return matchPseudoSelector(node, token, root);
    default:
      throw new Error('Unknown token type: ' + String(token.type));
  }
}

/**
 * Returns a predicate function that checks if a
 * node matches every token in the body of a selector
 * token.
 * @param {Token} token
 */
function buildPredicateFromToken(token, root) {
  return function (node) {
    return token.body.every(function (bodyToken) {
      return nodeMatchesToken(node, bodyToken, root);
    });
  };
}

/**
 * Returns whether a parsed selector is a complex selector, which
 * is defined as a selector that contains combinators.
 * @param {Array<Token>} tokens
 */
function isComplexSelector(tokens) {
  return tokens.some(function (token) {
    return token.type !== SELECTOR;
  });
}

/**
 * Takes a component constructor, object, or string representing
 * a simple selector and returns a predicate function that can
 * be applied to a single node.
 * @param {EnzymeSelector} selector
 */
function buildPredicate(selector) {
  // If the selector is a string, parse it as a simple CSS selector
  if (typeof selector === 'string') {
    var tokens = safelyGenerateTokens(selector);
    if (isComplexSelector(tokens)) {
      throw new TypeError('This method does not support complex CSS selectors');
    }
    // Simple selectors only have a single selector token
    return buildPredicateFromToken(tokens[0]);
  }

  // If the selector is an element type, check if the node's type matches
  var adapter = (0, _getAdapter2['default'])();
  var isElementType = adapter.isValidElementType ? adapter.isValidElementType(selector) : typeof selector === 'function';
  if (isElementType) {
    return function (node) {
      return adapter.matchesElementType(node, selector);
    };
  }
  // If the selector is an non-empty object, treat the keys/values as props
  if ((typeof selector === 'undefined' ? 'undefined' : _typeof(selector)) === 'object') {
    if (!Array.isArray(selector) && selector !== null && Object.keys(selector).length > 0) {
      var hasUndefinedValues = (0, _object2['default'])(selector).some(function (value) {
        return typeof value === 'undefined';
      });
      if (hasUndefinedValues) {
        throw new TypeError('Enzyme::Props can’t have `undefined` values. Try using ‘findWhere()’ instead.');
      }
      return function (node) {
        return (0, _RSTTraversal.nodeMatchesObjectProps)(node, selector);
      };
    }
    throw new TypeError('Enzyme::Selector does not support an array, null, or empty object as a selector');
  }

  throw new TypeError('Enzyme::Selector expects a string, object, or valid element type (Component Constructor)');
}

/**
 * Matches only nodes which are adjacent siblings (direct next sibling)
 * against a predicate, returning those that match.
 * @param {Array<Node>} nodes
 * @param {Function} predicate
 * @param {Node} root
 */
function matchAdjacentSiblings(nodes, predicate, root) {
  return nodes.reduce(function (matches, node) {
    var parent = (0, _RSTTraversal.findParentNode)(root, node);
    // If there's no parent, there's no siblings
    if (!parent) {
      return matches;
    }
    var parentChildren = (0, _RSTTraversal.childrenOfNode)(parent);
    var nodeIndex = parentChildren.indexOf(node);
    var adjacentSibling = parentChildren[nodeIndex + 1];
    // No sibling
    if (!adjacentSibling) {
      return matches;
    }
    if (predicate(adjacentSibling)) {
      matches.push(adjacentSibling);
    }
    return matches;
  }, []);
}

/**
 * Matches only nodes which are general siblings (any sibling *after*)
 * against a predicate, returning those that match.
 * @param {Array<Node>} nodes
 * @param {Function} predicate
 * @param {Node} root
 */
function matchGeneralSibling(nodes, predicate, root) {
  return uniqueReduce(function (matches, node) {
    var parent = (0, _RSTTraversal.findParentNode)(root, node);
    if (!parent) {
      return matches;
    }
    var parentChildren = (0, _RSTTraversal.childrenOfNode)(parent);
    var nodeIndex = parentChildren.indexOf(node);
    var youngerSiblings = parentChildren.slice(nodeIndex + 1);
    return matches.concat(youngerSiblings.filter(predicate));
  }, nodes);
}

/**
 * Matches only nodes which are direct children (not grandchildren, etc.)
 * against a predicate, returning those that match.
 * @param {Array<Node>} nodes
 * @param {Function} predicate
 */
function matchDirectChild(nodes, predicate) {
  return uniqueReduce(function (matches, node) {
    return matches.concat((0, _RSTTraversal.childrenOfNode)(node).filter(predicate));
  }, nodes);
}

/**
 * Matches all descendant nodes against a predicate,
 * returning those that match.
 * @param {Array<Node>} nodes
 * @param {Function} predicate
 */
function matchDescendant(nodes, predicate) {
  return uniqueReduce(function (matches, node) {
    return matches.concat((0, _RSTTraversal.treeFilter)(node, predicate));
  }, (0, _arrayPrototype2['default'])(nodes.map(_RSTTraversal.childrenOfNode)));
}

/**
 * Takes an RST and reduces it to a set of nodes matching
 * the selector. The selector can be a simple selector, which
 * is handled by `buildPredicate`, or a complex CSS selector which
 * reduceTreeBySelector parses and reduces the tree based on the combinators.
 *
 * @param {EnzymeSelector} selector
 * @param {RSTNode} root
 */
function reduceTreeBySelector(selector, root) {
  if (typeof selector !== 'string') {
    var elements = (0, _byConstructor2['default'])(selector);
    if (elements.length > 0) {
      return (0, _arrayPrototype2['default'])(elements.map(function (x) {
        return reduceTreeBySelector(x.tag, root);
      }));

      // when https://github.com/aweary/rst-selector-parser/issues/15 is resolved
      // const htmlTagNames = elements.map(x => x.tag).join(', ');
      // return reduceTreeBySelector(htmlTagNames, root);
    }
  }

  if (typeof selector === 'function' || (typeof selector === 'undefined' ? 'undefined' : _typeof(selector)) === 'object') {
    return (0, _RSTTraversal.treeFilter)(root, buildPredicate(selector));
  }

  var results = [];
  if (typeof selector === 'string') {
    var tokens = safelyGenerateTokens(selector);
    var index = 0;
    while (index < tokens.length) {
      var token = tokens[index];
      /**
       * There are two types of tokens in a CSS selector:
       *
       * 1. Selector tokens. These target nodes directly, like
       *    type or attribute selectors. These are easy to apply
       *    because we can traverse the tree and return only
       *    the nodes that match the predicate.
       *
       * 2. Combinator tokens. These tokens chain together
       *    selector nodes. For example > for children, or +
       *    for adjacent siblings. These are harder to match
       *    as we have to track where in the tree we are
       *    to determine if a selector node applies or not.
       */
      if (token.type === SELECTOR) {
        var predicate = buildPredicateFromToken(token, root);
        results = results.concat((0, _RSTTraversal.treeFilter)(root, predicate));
      } else {
        // We can assume there always all previously matched tokens since selectors
        // cannot start with combinators.
        var type = token.type;
        // We assume the next token is a selector, so move the index
        // forward and build the predicate.

        index += 1;
        var _predicate = buildPredicateFromToken(tokens[index], root);
        // We match against only the nodes which have already been matched,
        // since a combinator is meant to refine a previous selector.
        switch (type) {
          // The + combinator
          case ADJACENT_SIBLING:
            results = matchAdjacentSiblings(results, _predicate, root);
            break;
          // The ~ combinator
          case GENERAL_SIBLING:
            results = matchGeneralSibling(results, _predicate, root);
            break;
          // The > combinator
          case CHILD:
            results = matchDirectChild(results, _predicate);
            break;
          // The ' ' (whitespace) combinator
          case DESCENDANT:
            {
              results = matchDescendant(results, _predicate);
              break;
            }
          default:
            throw new Error('Unknown combinator selector: ' + String(type));
        }
      }
      index += 1;
    }
  } else {
    throw new TypeError('Enzyme::Selector expects a string, object, or Component Constructor');
  }
  return results;
}

function reduceTreesBySelector(selector, roots) {
  var results = roots.map(function (n) {
    return reduceTreeBySelector(selector, n);
  });
  return unique((0, _arrayPrototype2['default'])(results, 1));
}
//# 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{ createParser } from 'rst-selector-parser';\nimport values from 'object.values';\nimport flat from 'array.prototype.flat';\nimport is from 'object-is';\nimport has from 'has';\nimport elementsByConstructor from 'html-element-map/byConstructor';\nimport {\n  treeFilter,\n  nodeHasId,\n  findParentNode,\n  nodeMatchesObjectProps,\n  childrenOfNode,\n  hasClassName,\n} from './RSTTraversal';\nimport { nodeHasType, propsOfNode } from './Utils';\nimport getAdapter from './getAdapter';\n// our CSS selector parser instance\nconst parser = createParser();\n\n// Combinators that allow you to chance selectors\nconst CHILD = 'childCombinator';\nconst ADJACENT_SIBLING = 'adjacentSiblingCombinator';\nconst GENERAL_SIBLING = 'generalSiblingCombinator';\nconst DESCENDANT = 'descendantCombinator';\n\n// Selectors for targeting elements\nconst SELECTOR = 'selector';\nconst TYPE_SELECTOR = 'typeSelector';\nconst CLASS_SELECTOR = 'classSelector';\nconst ID_SELECTOR = 'idSelector';\nconst UNIVERSAL_SELECTOR = 'universalSelector';\nconst ATTRIBUTE_PRESENCE = 'attributePresenceSelector';\nconst ATTRIBUTE_VALUE = 'attributeValueSelector';\n// @TODO we dont support these, throw if they are used\nconst PSEUDO_CLASS = 'pseudoClassSelector';\nconst PSEUDO_ELEMENT = 'pseudoElementSelector';\n\nconst EXACT_ATTRIBUTE_OPERATOR = '=';\nconst WHITELIST_ATTRIBUTE_OPERATOR = '~=';\nconst HYPHENATED_ATTRIBUTE_OPERATOR = '|=';\nconst PREFIX_ATTRIBUTE_OPERATOR = '^=';\nconst SUFFIX_ATTRIBUTE_OPERATOR = '$=';\nconst SUBSTRING_ATTRIBUTE_OPERATOR = '*=';\n\nfunction unique(arr) {\n  return [...new Set(arr)];\n}\n\n/**\n * Calls reduce on a array of nodes with the passed\n * function, returning only unique results.\n * @param {Function} fn\n * @param {Array<Node>} nodes\n */\nfunction uniqueReduce(fn, nodes) {\n  return unique(nodes.reduce(fn, []));\n}\n\n/**\n * Takes a CSS selector and returns a set of tokens parsed\n * by scalpel.\n * @param {String} selector\n */\nfunction 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* [attr=\"val\"] matches attr=\"val\"\n     */\n    case EXACT_ATTRIBUTE_OPERATOR:\n      return is(nodePropValue, value);\n    /**\n     * Represents an element with the att attribute whose value is a whitespace-separated\n     * list of words, one of which is exactly\n     * @example\n     *  [rel~=\"copyright\"] matches rel=\"copyright other\"\n     */\n    case WHITELIST_ATTRIBUTE_OPERATOR:\n      return nodePropValue.split(' ').indexOf(value) !== -1;\n    /**\n     * Represents an element with the att attribute, its value either being exactly the\n     * value or beginning with the value immediately followed by \"-\"\n     * @example\n     * [hreflang|=\"en\"] matches hreflang=\"en-US\"\n     */\n    case HYPHENATED_ATTRIBUTE_OPERATOR:\n      return nodePropValue === value || nodePropValue.startsWith(`${value}-`);\n    /**\n     * Represents an element with the att attribute whose value begins with the prefix value.\n     * If the value is the empty string then the selector does not represent anything.\n     * @example\n     * [type^=\"image\"] matches type=\"imageobject\"\n     */\n    case PREFIX_ATTRIBUTE_OPERATOR:\n      return value === '' ? false : nodePropValue.slice(0, value.length) === value;\n    /**\n     * Represents an element with the att attribute whose value ends with the suffix value.\n     * If the value is the empty string then the selector does not represent anything.\n     * @example\n     * [type$=\"image\"] matches type=\"imageobject\"\n     */\n    case SUFFIX_ATTRIBUTE_OPERATOR:\n      return value === '' ? false : nodePropValue.slice(-value.length) === value;\n    /**\n     * Represents an element with the att attribute whose value contains at least one\n     * instance of the value. If value is the empty string then the\n     * selector does not represent anything.\n     * @example\n     * [title*=\"hello\"] matches title=\"well hello there\"\n     */\n    case SUBSTRING_ATTRIBUTE_OPERATOR:\n      return value === '' ? false : nodePropValue.indexOf(value) !== -1;\n    default:\n      throw new Error(`Enzyme::Selector: Unknown attribute selector operator \"${operator}\"`);\n  }\n}\n\n\nfunction matchPseudoSelector(node, token, root) {\n  const { name, parameters } = token;\n  if (name === 'not') {\n    // eslint-disable-next-line no-use-before-define\n    return parameters.every((selector) => reduceTreeBySelector(selector, node).length === 0);\n  }\n  if (name === 'empty') {\n    return treeFilter(node, (n) => n !== node).length === 0;\n  }\n  if (name === 'first-child') {\n    const { rendered } = findParentNode(root, node);\n    const [firstChild] = rendered;\n    return firstChild === node;\n  }\n  if (name === 'last-child') {\n    const { rendered } = findParentNode(root, node);\n    return rendered[rendered.length - 1] === node;\n  }\n  if (name === 'focus') {\n    if (typeof document === 'undefined') {\n      throw new Error('Enzyme::Selector does not support the \":focus\" pseudo-element without a global `document`.');\n    }\n    const adapter = getAdapter();\n    /* eslint-env browser */\n    return document.activeElement && adapter.nodeToHostNode(node) === document.activeElement;\n  }\n\n  throw new TypeError(`Enzyme::Selector does not support the \"${token.name}\" pseudo-element or pseudo-class selectors.`);\n}\n\n/**\n * Takes a node and a token and determines if the node\n * matches the predicate defined by the token.\n * @param {Node} node\n * @param {Token} token\n */\nfunction nodeMatchesToken(node, token, root) {\n  if (node === null || typeof node === 'string') {\n    return false;\n  }\n  switch (token.type) {\n    /**\n     * Match every node\n     * @example '*' matches every node\n     */\n    case UNIVERSAL_SELECTOR:\n      return true;\n    /**\n     * Match against the className prop\n     * @example '.active' matches <div className='active' />\n     */\n    case CLASS_SELECTOR:\n      return hasClassName(node, token.name);\n    /**\n     * Simple type matching\n     * @example 'div' matches <div />\n     */\n    case TYPE_SELECTOR:\n      return nodeHasType(node, token.name);\n    /**\n     * Match against the `id` prop\n     * @example '#nav' matches <ul id=\"nav\" />\n     */\n    case ID_SELECTOR:\n      return nodeHasId(node, token.name);\n    /**\n     * Matches if an attribute is present, regardless\n     * of its value\n     * @example '[disabled]' matches <a disabled />\n     */\n    case ATTRIBUTE_PRESENCE:\n      return matchAttributeSelector(node, token);\n    /**\n     * Matches if an attribute is present with the\n     * provided value\n     * @example '[data-foo=foo]' matches <div data-foo=\"foo\" />\n     */\n    case ATTRIBUTE_VALUE:\n      return matchAttributeSelector(node, token);\n    case PSEUDO_ELEMENT:\n    case PSEUDO_CLASS:\n      return matchPseudoSelector(node, token, root);\n    default:\n      throw new Error(`Unknown token type: ${token.type}`);\n  }\n}\n\n/**\n * Returns a predicate function that checks if a\n * node matches every token in the body of a selector\n * token.\n * @param {Token} token\n */\nfunction buildPredicateFromToken(token, root) {\n  return (node) => token.body.every((bodyToken) => nodeMatchesToken(node, bodyToken, root));\n}\n\n/**\n * Returns whether a parsed selector is a complex selector, which\n * is defined as a selector that contains combinators.\n * @param {Array<Token>} tokens\n */\nfunction isComplexSelector(tokens) {\n  return tokens.some((token) => token.type !== SELECTOR);\n}\n\n\n/**\n * Takes a component constructor, object, or string representing\n * a simple selector and returns a predicate function that can\n * be applied to a single node.\n * @param {EnzymeSelector} selector\n */\nexport function buildPredicate(selector) {\n  // If the selector is a string, parse it as a simple CSS selector\n  if (typeof selector === 'string') {\n    const tokens = safelyGenerateTokens(selector);\n    if (isComplexSelector(tokens)) {\n      throw new TypeError('This method does not support complex CSS selectors');\n    }\n    // Simple selectors only have a single selector token\n    return buildPredicateFromToken(tokens[0]);\n  }\n\n  // If the selector is an element type, check if the node's type matches\n  const adapter = getAdapter();\n  const isElementType = adapter.isValidElementType\n    ? adapter.isValidElementType(selector)\n    : typeof selector === 'function';\n  if (isElementType) {\n    return (node) => adapter.matchesElementType(node, selector);\n  }\n  // If the selector is an non-empty object, treat the keys/values as props\n  if (typeof selector === 'object') {\n    if (!Array.isArray(selector) && selector !== null && Object.keys(selector).length > 0) {\n      const hasUndefinedValues = values(selector).some((value) => typeof value === 'undefined');\n      if (hasUndefinedValues) {\n        throw new TypeError('Enzyme::Props can’t have `undefined` values. Try using ‘findWhere()’ instead.');\n      }\n      return (node) => nodeMatchesObjectProps(node, selector);\n    }\n    throw new TypeError('Enzyme::Selector does not support an array, null, or empty object as a selector');\n  }\n\n  throw new TypeError('Enzyme::Selector expects a string, object, or valid element type (Component Constructor)');\n}\n\n/**\n * Matches only nodes which are adjacent siblings (direct next sibling)\n * against a predicate, returning those that match.\n * @param {Array<Node>} nodes\n * @param {Function} predicate\n * @param {Node} root\n */\nfunction matchAdjacentSiblings(nodes, predicate, root) {\n  return nodes.reduce((matches, node) => {\n    const parent = findParentNode(root, node);\n    // If there's no parent, there's no siblings\n    if (!parent) {\n      return matches;\n    }\n    const parentChildren = childrenOfNode(parent);\n    const nodeIndex = parentChildren.indexOf(node);\n    const adjacentSibling = parentChildren[nodeIndex + 1];\n    // No sibling\n    if (!adjacentSibling) {\n      return matches;\n    }\n    if (predicate(adjacentSibling)) {\n      matches.push(adjacentSibling);\n    }\n    return matches;\n  }, []);\n}\n\n/**\n * Matches only nodes which are general siblings (any sibling *after*)\n * against a predicate, returning those that match.\n * @param {Array<Node>} nodes\n * @param {Function} predicate\n * @param {Node} root\n */\nfunction matchGeneralSibling(nodes, predicate, root) {\n  return uniqueReduce((matches, node) => {\n    const parent = findParentNode(root, node);\n    if (!parent) {\n      return matches;\n    }\n    const parentChildren = childrenOfNode(parent);\n    const nodeIndex = parentChildren.indexOf(node);\n    const youngerSiblings = parentChildren.slice(nodeIndex + 1);\n    return matches.concat(youngerSiblings.filter(predicate));\n  }, nodes);\n}\n\n/**\n * Matches only nodes which are direct children (not grandchildren, etc.)\n * against a predicate, returning those that match.\n * @param {Array<Node>} nodes\n * @param {Function} predicate\n */\nfunction matchDirectChild(nodes, predicate) {\n  return uniqueReduce(\n    (matches, node) => matches.concat(childrenOfNode(node).filter(predicate)),\n    nodes,\n  );\n}\n\n/**\n * Matches all descendant nodes against a predicate,\n * returning those that match.\n * @param {Array<Node>} nodes\n * @param {Function} predicate\n */\nfunction matchDescendant(nodes, predicate) {\n  return uniqueReduce(\n    (matches, node) => matches.concat(treeFilter(node, predicate)),\n    flat(nodes.map(childrenOfNode)),\n  );\n}\n\n/**\n * Takes an RST and reduces it to a set of nodes matching\n * the selector. The selector can be a simple selector, which\n * is handled by `buildPredicate`, or a complex CSS selector which\n * reduceTreeBySelector parses and reduces the tree based on the combinators.\n *\n * @param {EnzymeSelector} selector\n * @param {RSTNode} root\n */\nexport function reduceTreeBySelector(selector, root) {\n  if (typeof selector !== 'string') {\n    const elements = elementsByConstructor(selector);\n    if (elements.length > 0) {\n      return flat(elements.map((x) => reduceTreeBySelector(x.tag, root)));\n\n      // when https://github.com/aweary/rst-selector-parser/issues/15 is resolved\n      // const htmlTagNames = elements.map(x => x.tag).join(', ');\n      // return reduceTreeBySelector(htmlTagNames, root);\n    }\n  }\n\n  if (typeof selector === 'function' || typeof selector === 'object') {\n    return treeFilter(root, buildPredicate(selector));\n  }\n\n  let results = [];\n  if (typeof selector === 'string') {\n    const tokens = safelyGenerateTokens(selector);\n    let index = 0;\n    while (index < tokens.length) {\n      const token = tokens[index];\n      /**\n       * There are two types of tokens in a CSS selector:\n       *\n       * 1. Selector tokens. These target nodes directly, like\n       *    type or attribute selectors. These are easy to apply\n       *    because we can traverse the tree and return only\n       *    the nodes that match the predicate.\n       *\n       * 2. Combinator tokens. These tokens chain together\n       *    selector nodes. For example > for children, or +\n       *    for adjacent siblings. These are harder to match\n       *    as we have to track where in the tree we are\n       *    to determine if a selector node applies or not.\n       */\n      if (token.type === SELECTOR) {\n        const predicate = buildPredicateFromToken(token, root);\n        results = results.concat(treeFilter(root, predicate));\n      } else {\n        // We can assume there always all previously matched tokens since selectors\n        // cannot start with combinators.\n        const { type } = token;\n        // We assume the next token is a selector, so move the index\n        // forward and build the predicate.\n        index += 1;\n        const predicate = buildPredicateFromToken(tokens[index], root);\n        // We match against only the nodes which have already been matched,\n        // since a combinator is meant to refine a previous selector.\n        switch (type) {\n          // The + combinator\n          case ADJACENT_SIBLING:\n            results = matchAdjacentSiblings(results, predicate, root);\n            break;\n          // The ~ combinator\n          case GENERAL_SIBLING:\n            results = matchGeneralSibling(results, predicate, root);\n            break;\n          // The > combinator\n          case CHILD:\n            results = matchDirectChild(results, predicate);\n            break;\n          // The ' ' (whitespace) combinator\n          case DESCENDANT: {\n            results = matchDescendant(results, predicate);\n            break;\n          }\n          default:\n            throw new Error(`Unknown combinator selector: ${type}`);\n        }\n      }\n      index += 1;\n    }\n  } else {\n    throw new TypeError('Enzyme::Selector expects a string, object, or Component Constructor');\n  }\n  return results;\n}\n\nexport function reduceTreesBySelector(selector, roots) {\n  const results = roots.map((n) => reduceTreeBySelector(selector, n));\n  return unique(flat(results, 1));\n}\n"]}
//# sourceMappingURL=selectors.js.map