wishthis/node_modules/postcss/lib/node.js

"use strict";

exports.__esModule = true;
exports.default = void 0;

var _cssSyntaxError = _interopRequireDefault(require("./css-syntax-error"));

var _stringifier = _interopRequireDefault(require("./stringifier"));

var _stringify = _interopRequireDefault(require("./stringify"));

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

function cloneNode(obj, parent) {
  var cloned = new obj.constructor();

  for (var i in obj) {
    if (!obj.hasOwnProperty(i)) continue;
    var value = obj[i];
    var type = typeof value;

    if (i === 'parent' && type === 'object') {
      if (parent) cloned[i] = parent;
    } else if (i === 'source') {
      cloned[i] = value;
    } else if (value instanceof Array) {
      cloned[i] = value.map(function (j) {
        return cloneNode(j, cloned);
      });
    } else {
      if (type === 'object' && value !== null) value = cloneNode(value);
      cloned[i] = value;
    }
  }

  return cloned;
}
/**
 * All node classes inherit the following common methods.
 *
 * @abstract
 */


var Node = /*#__PURE__*/function () {
  /**
   * @param {object} [defaults] Value for node properties.
   */
  function Node(defaults) {
    if (defaults === void 0) {
      defaults = {};
    }

    this.raws = {};

    if (process.env.NODE_ENV !== 'production') {
      if (typeof defaults !== 'object' && typeof defaults !== 'undefined') {
        throw new Error('PostCSS nodes constructor accepts object, not ' + JSON.stringify(defaults));
      }
    }

    for (var name in defaults) {
      this[name] = defaults[name];
    }
  }
  /**
   * Returns a `CssSyntaxError` instance containing the original position
   * of the node in the source, showing line and column numbers and also
   * a small excerpt to facilitate debugging.
   *
   * If present, an input source map will be used to get the original position
   * of the source, even from a previous compilation step
   * (e.g., from Sass compilation).
   *
   * This method produces very useful error messages.
   *
   * @param {string} message     Error description.
   * @param {object} [opts]      Options.
   * @param {string} opts.plugin Plugin name that created this error.
   *                             PostCSS will set it automatically.
   * @param {string} opts.word   A word inside a node’s string that should
   *                             be highlighted as the source of the error.
   * @param {number} opts.index  An index inside a node’s string that should
   *                             be highlighted as the source of the error.
   *
   * @return {CssSyntaxError} Error object to throw it.
   *
   * @example
   * if (!variables[name]) {
   *   throw decl.error('Unknown variable ' + name, { word: name })
   *   // CssSyntaxError: postcss-vars:a.sass:4:3: Unknown variable $black
   *   //   color: $black
   *   // a
   *   //          ^
   *   //   background: white
   * }
   */


  var _proto = Node.prototype;

  _proto.error = function error(message, opts) {
    if (opts === void 0) {
      opts = {};
    }

    if (this.source) {
      var pos = this.positionBy(opts);
      return this.source.input.error(message, pos.line, pos.column, opts);
    }

    return new _cssSyntaxError.default(message);
  }
  /**
   * This method is provided as a convenience wrapper for {@link Result#warn}.
   *
   * @param {Result} result      The {@link Result} instance
   *                             that will receive the warning.
   * @param {string} text        Warning message.
   * @param {object} [opts]      Options
   * @param {string} opts.plugin Plugin name that created this warning.
   *                             PostCSS will set it automatically.
   * @param {string} opts.word   A word inside a node’s string that should
   *                             be highlighted as the source of the warning.
   * @param {number} opts.index  An index inside a node’s string that should
   *                             be highlighted as the source of the warning.
   *
   * @return {Warning} Created warning object.
   *
   * @example
   * const plugin = postcss.plugin('postcss-deprecated', () => {
   *   return (root, result) => {
   *     root.walkDecls('bad', decl => {
   *       decl.warn(result, 'Deprecated property bad')
   *     })
   *   }
   * })
   */
  ;

  _proto.warn = function warn(result, text, opts) {
    var data = {
      node: this
    };

    for (var i in opts) {
      data[i] = opts[i];
    }

    return result.warn(text, data);
  }
  /**
   * Removes the node from its parent and cleans the parent properties
   * from the node and its children.
   *
   * @example
   * if (decl.prop.match(/^-webkit-/)) {
   *   decl.remove()
   * }
   *
   * @return {Node} Node to make calls chain.
   */
  ;

  _proto.remove = function remove() {
    if (this.parent) {
      this.parent.removeChild(this);
    }

    this.parent = undefined;
    return this;
  }
  /**
   * Returns a CSS string representing the node.
   *
   * @param {stringifier|syntax} [stringifier] A syntax to use
   *                                           in string generation.
   *
   * @return {string} CSS string of this node.
   *
   * @example
   * postcss.rule({ selector: 'a' }).toString() //=> "a {}"
   */
  ;

  _proto.toString = function toString(stringifier) {
    if (stringifier === void 0) {
      stringifier = _stringify.default;
    }

    if (stringifier.stringify) stringifier = stringifier.stringify;
    var result = '';
    stringifier(this, function (i) {
      result += i;
    });
    return result;
  }
  /**
   * Returns an exact clone of the node.
   *
   * The resulting cloned node and its (cloned) children will retain
   * code style properties.
   *
   * @param {object} [overrides] New properties to override in the clone.
   *
   * @example
   * decl.raws.before    //=> "\n  "
   * const cloned = decl.clone({ prop: '-moz-' + decl.prop })
   * cloned.raws.before  //=> "\n  "
   * cloned.toString()   //=> -moz-transform: scale(0)
   *
   * @return {Node} Clone of the node.
   */
  ;

  _proto.clone = function clone(overrides) {
    if (overrides === void 0) {
      overrides = {};
    }

    var cloned = cloneNode(this);

    for (var name in overrides) {
      cloned[name] = overrides[name];
    }

    return cloned;
  }
  /**
   * Shortcut to clone the node and insert the resulting cloned node
   * before the current node.
   *
   * @param {object} [overrides] Mew properties to override in the clone.
   *
   * @example
   * decl.cloneBefore({ prop: '-moz-' + decl.prop })
   *
   * @return {Node} New node
   */
  ;

  _proto.cloneBefore = function cloneBefore(overrides) {
    if (overrides === void 0) {
      overrides = {};
    }

    var cloned = this.clone(overrides);
    this.parent.insertBefore(this, cloned);
    return cloned;
  }
  /**
   * Shortcut to clone the node and insert the resulting cloned node
   * after the current node.
   *
   * @param {object} [overrides] New properties to override in the clone.
   *
   * @return {Node} New node.
   */
  ;

  _proto.cloneAfter = function cloneAfter(overrides) {
    if (overrides === void 0) {
      overrides = {};
    }

    var cloned = this.clone(overrides);
    this.parent.insertAfter(this, cloned);
    return cloned;
  }
  /**
   * Inserts node(s) before the current node and removes the current node.
   *
   * @param {...Node} nodes Mode(s) to replace current one.
   *
   * @example
   * if (atrule.name === 'mixin') {
   *   atrule.replaceWith(mixinRules[atrule.params])
   * }
   *
   * @return {Node} Current node to methods chain.
   */
  ;

  _proto.replaceWith = function replaceWith() {
    if (this.parent) {
      for (var _len = arguments.length, nodes = new Array(_len), _key = 0; _key < _len; _key++) {
        nodes[_key] = arguments[_key];
      }

      for (var _i = 0, _nodes = nodes; _i < _nodes.length; _i++) {
        var node = _nodes[_i];
        this.parent.insertBefore(this, node);
      }

      this.remove();
    }

    return this;
  }
  /**
   * Returns the next child of the node’s parent.
   * Returns `undefined` if the current node is the last child.
   *
   * @return {Node|undefined} Next node.
   *
   * @example
   * if (comment.text === 'delete next') {
   *   const next = comment.next()
   *   if (next) {
   *     next.remove()
   *   }
   * }
   */
  ;

  _proto.next = function next() {
    if (!this.parent) return undefined;
    var index = this.parent.index(this);
    return this.parent.nodes[index + 1];
  }
  /**
   * Returns the previous child of the node’s parent.
   * Returns `undefined` if the current node is the first child.
   *
   * @return {Node|undefined} Previous node.
   *
   * @example
   * const annotation = decl.prev()
   * if (annotation.type === 'comment') {
   *   readAnnotation(annotation.text)
   * }
   */
  ;

  _proto.prev = function prev() {
    if (!this.parent) return undefined;
    var index = this.parent.index(this);
    return this.parent.nodes[index - 1];
  }
  /**
   * Insert new node before current node to current node’s parent.
   *
   * Just alias for `node.parent.insertBefore(node, add)`.
   *
   * @param {Node|object|string|Node[]} add New node.
   *
   * @return {Node} This node for methods chain.
   *
   * @example
   * decl.before('content: ""')
   */
  ;

  _proto.before = function before(add) {
    this.parent.insertBefore(this, add);
    return this;
  }
  /**
   * Insert new node after current node to current node’s parent.
   *
   * Just alias for `node.parent.insertAfter(node, add)`.
   *
   * @param {Node|object|string|Node[]} add New node.
   *
   * @return {Node} This node for methods chain.
   *
   * @example
   * decl.after('color: black')
   */
  ;

  _proto.after = function after(add) {
    this.parent.insertAfter(this, add);
    return this;
  };

  _proto.toJSON = function toJSON() {
    var fixed = {};

    for (var name in this) {
      if (!this.hasOwnProperty(name)) continue;
      if (name === 'parent') continue;
      var value = this[name];

      if (value instanceof Array) {
        fixed[name] = value.map(function (i) {
          if (typeof i === 'object' && i.toJSON) {
            return i.toJSON();
          } else {
            return i;
          }
        });
      } else if (typeof value === 'object' && value.toJSON) {
        fixed[name] = value.toJSON();
      } else {
        fixed[name] = value;
      }
    }

    return fixed;
  }
  /**
   * Returns a {@link Node#raws} value. If the node is missing
   * the code style property (because the node was manually built or cloned),
   * PostCSS will try to autodetect the code style property by looking
   * at other nodes in the tree.
   *
   * @param {string} prop          Name of code style property.
   * @param {string} [defaultType] Name of default value, it can be missed
   *                               if the value is the same as prop.
   *
   * @example
   * const root = postcss.parse('a { background: white }')
   * root.nodes[0].append({ prop: 'color', value: 'black' })
   * root.nodes[0].nodes[1].raws.before   //=> undefined
   * root.nodes[0].nodes[1].raw('before') //=> ' '
   *
   * @return {string} Code style value.
   */
  ;

  _proto.raw = function raw(prop, defaultType) {
    var str = new _stringifier.default();
    return str.raw(this, prop, defaultType);
  }
  /**
   * Finds the Root instance of the node’s tree.
   *
   * @example
   * root.nodes[0].nodes[0].root() === root
   *
   * @return {Root} Root parent.
   */
  ;

  _proto.root = function root() {
    var result = this;

    while (result.parent) {
      result = result.parent;
    }

    return result;
  }
  /**
   * Clear the code style properties for the node and its children.
   *
   * @param {boolean} [keepBetween] Keep the raws.between symbols.
   *
   * @return {undefined}
   *
   * @example
   * node.raws.before  //=> ' '
   * node.cleanRaws()
   * node.raws.before  //=> undefined
   */
  ;

  _proto.cleanRaws = function cleanRaws(keepBetween) {
    delete this.raws.before;
    delete this.raws.after;
    if (!keepBetween) delete this.raws.between;
  };

  _proto.positionInside = function positionInside(index) {
    var string = this.toString();
    var column = this.source.start.column;
    var line = this.source.start.line;

    for (var i = 0; i < index; i++) {
      if (string[i] === '\n') {
        column = 1;
        line += 1;
      } else {
        column += 1;
      }
    }

    return {
      line: line,
      column: column
    };
  };

  _proto.positionBy = function positionBy(opts) {
    var pos = this.source.start;

    if (opts.index) {
      pos = this.positionInside(opts.index);
    } else if (opts.word) {
      var index = this.toString().indexOf(opts.word);
      if (index !== -1) pos = this.positionInside(index);
    }

    return pos;
  }
  /**
   * @memberof Node#
   * @member {string} type String representing the node’s type.
   *                       Possible values are `root`, `atrule`, `rule`,
   *                       `decl`, or `comment`.
   *
   * @example
   * postcss.decl({ prop: 'color', value: 'black' }).type //=> 'decl'
   */

  /**
   * @memberof Node#
   * @member {Container} parent The node’s parent node.
   *
   * @example
   * root.nodes[0].parent === root
   */

  /**
   * @memberof Node#
   * @member {source} source The input source of the node.
   *
   * The property is used in source map generation.
   *
   * If you create a node manually (e.g., with `postcss.decl()`),
   * that node will not have a `source` property and will be absent
   * from the source map. For this reason, the plugin developer should
   * consider cloning nodes to create new ones (in which case the new node’s
   * source will reference the original, cloned node) or setting
   * the `source` property manually.
   *
   * ```js
   * // Bad
   * const prefixed = postcss.decl({
   *   prop: '-moz-' + decl.prop,
   *   value: decl.value
   * })
   *
   * // Good
   * const prefixed = decl.clone({ prop: '-moz-' + decl.prop })
   * ```
   *
   * ```js
   * if (atrule.name === 'add-link') {
   *   const rule = postcss.rule({ selector: 'a', source: atrule.source })
   *   atrule.parent.insertBefore(atrule, rule)
   * }
   * ```
   *
   * @example
   * decl.source.input.from //=> '/home/ai/a.sass'
   * decl.source.start      //=> { line: 10, column: 2 }
   * decl.source.end        //=> { line: 10, column: 12 }
   */

  /**
   * @memberof Node#
   * @member {object} raws Information to generate byte-to-byte equal
   *                       node string as it was in the origin input.
   *
   * Every parser saves its own properties,
   * but the default CSS parser uses:
   *
   * * `before`: the space symbols before the node. It also stores `*`
   *   and `_` symbols before the declaration (IE hack).
   * * `after`: the space symbols after the last child of the node
   *   to the end of the node.
   * * `between`: the symbols between the property and value
   *   for declarations, selector and `{` for rules, or last parameter
   *   and `{` for at-rules.
   * * `semicolon`: contains true if the last child has
   *   an (optional) semicolon.
   * * `afterName`: the space between the at-rule name and its parameters.
   * * `left`: the space symbols between `/*` and the comment’s text.
   * * `right`: the space symbols between the comment’s text
   *   and <code>*&#47;</code>.
   * * `important`: the content of the important statement,
   *   if it is not just `!important`.
   *
   * PostCSS cleans selectors, declaration values and at-rule parameters
   * from comments and extra spaces, but it stores origin content in raws
   * properties. As such, if you don’t change a declaration’s value,
   * PostCSS will use the raw value with comments.
   *
   * @example
   * const root = postcss.parse('a {\n  color:black\n}')
   * root.first.first.raws //=> { before: '\n  ', between: ':' }
   */
  ;

  return Node;
}();

var _default = Node;
/**
 * @typedef {object} position
 * @property {number} line   Source line in file.
 * @property {number} column Source column in file.
 */

/**
 * @typedef {object} source
 * @property {Input} input    {@link Input} with input file
 * @property {position} start The starting position of the node’s source.
 * @property {position} end   The ending position of the node’s source.
 */

exports.default = _default;
module.exports = exports.default;
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