"use strict";

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

var _path = _interopRequireDefault(require("path"));

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

var _previousMap = _interopRequireDefault(require("./previous-map"));

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

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var sequence = 0;
/**
 * Represents the source CSS.
 *
 * @example
 * const root  = postcss.parse(css, { from: file })
 * const input = root.source.input
 */

var Input =
/*#__PURE__*/
function () {
  /**
   * @param {string} css    Input CSS source.
   * @param {object} [opts] {@link Processor#process} options.
   */
  function Input(css, opts) {
    if (opts === void 0) {
      opts = {};
    }

    if (css === null || typeof css === 'undefined' || typeof css === 'object' && !css.toString) {
      throw new Error("PostCSS received " + css + " instead of CSS string");
    }
    /**
     * Input CSS source
     *
     * @type {string}
     *
     * @example
     * const input = postcss.parse('a{}', { from: file }).input
     * input.css //=> "a{}"
     */


    this.css = css.toString();

    if (this.css[0] === "\uFEFF" || this.css[0] === "\uFFFE") {
      this.hasBOM = true;
      this.css = this.css.slice(1);
    } else {
      this.hasBOM = false;
    }

    if (opts.from) {
      if (/^\w+:\/\//.test(opts.from) || _path.default.isAbsolute(opts.from)) {
        /**
         * The absolute path to the CSS source file defined
         * with the `from` option.
         *
         * @type {string}
         *
         * @example
         * const root = postcss.parse(css, { from: 'a.css' })
         * root.source.input.file //=> '/home/ai/a.css'
         */
        this.file = opts.from;
      } else {
        this.file = _path.default.resolve(opts.from);
      }
    }

    var map = new _previousMap.default(this.css, opts);

    if (map.text) {
      /**
       * The input source map passed from a compilation step before PostCSS
       * (for example, from Sass compiler).
       *
       * @type {PreviousMap}
       *
       * @example
       * root.source.input.map.consumer().sources //=> ['a.sass']
       */
      this.map = map;
      var file = map.consumer().file;
      if (!this.file && file) this.file = this.mapResolve(file);
    }

    if (!this.file) {
      sequence += 1;
      /**
       * The unique ID of the CSS source. It will be created if `from` option
       * is not provided (because PostCSS does not know the file path).
       *
       * @type {string}
       *
       * @example
       * const root = postcss.parse(css)
       * root.source.input.file //=> undefined
       * root.source.input.id   //=> "<input css 1>"
       */

      this.id = '<input css ' + sequence + '>';
    }

    if (this.map) this.map.file = this.from;
  }

  var _proto = Input.prototype;

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

    var result;
    var origin = this.origin(line, column);

    if (origin) {
      result = new _cssSyntaxError.default(message, origin.line, origin.column, origin.source, origin.file, opts.plugin);
    } else {
      result = new _cssSyntaxError.default(message, line, column, this.css, this.file, opts.plugin);
    }

    result.input = {
      line: line,
      column: column,
      source: this.css
    };
    if (this.file) result.input.file = this.file;
    return result;
  }
  /**
   * Reads the input source map and returns a symbol position
   * in the input source (e.g., in a Sass file that was compiled
   * to CSS before being passed to PostCSS).
   *
   * @param {number} line   Line in input CSS.
   * @param {number} column Column in input CSS.
   *
   * @return {filePosition} Position in input source.
   *
   * @example
   * root.source.input.origin(1, 1) //=> { file: 'a.css', line: 3, column: 1 }
   */
  ;

  _proto.origin = function origin(line, column) {
    if (!this.map) return false;
    var consumer = this.map.consumer();
    var from = consumer.originalPositionFor({
      line: line,
      column: column
    });
    if (!from.source) return false;
    var result = {
      file: this.mapResolve(from.source),
      line: from.line,
      column: from.column
    };
    var source = consumer.sourceContentFor(from.source);
    if (source) result.source = source;
    return result;
  };

  _proto.mapResolve = function mapResolve(file) {
    if (/^\w+:\/\//.test(file)) {
      return file;
    }

    return _path.default.resolve(this.map.consumer().sourceRoot || '.', file);
  }
  /**
   * The CSS source identifier. Contains {@link Input#file} if the user
   * set the `from` option, or {@link Input#id} if they did not.
   *
   * @type {string}
   *
   * @example
   * const root = postcss.parse(css, { from: 'a.css' })
   * root.source.input.from //=> "/home/ai/a.css"
   *
   * const root = postcss.parse(css)
   * root.source.input.from //=> "<input css 1>"
   */
  ;

  _createClass(Input, [{
    key: "from",
    get: function get() {
      return this.file || this.id;
    }
  }]);

  return Input;
}();

var _default = Input;
/**
 * @typedef  {object} filePosition
 * @property {string} file   Path to file.
 * @property {number} line   Source line in file.
 * @property {number} column Source column in file.
 */

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