weex-loader/lib/extract.js

a webpack loader for weex

'use strict';

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"); } }; }();

var _loaderUtils = require('loader-utils');

var _loaderUtils2 = _interopRequireDefault(_loaderUtils);

var _parser = require('./parser');

var _util = require('./util');

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

module.exports = function (source, inputSourceMap) {
  var _this = this;

  this.cacheable && this.cacheable();

  var callback = this.async();
  var loaderQuery = _loaderUtils2.default.getOptions(this);
  var type = loaderQuery.type;
  var index = loaderQuery.index;

  if (index != null && index.match(/^\d+$/)) {
    index = parseInt(index);
  }

  (0, _parser.extractBlocks)(source, type).then(function (result) {
    if (index != null) {
      result = result[index];
    }
    var content = result.content.trim();

    var map = void 0;
    if (_this.sourceMap && (type === 'scripts' || type === 'elements')) {
      var contentLineStart = result.line;
      // let contentLineCount = 0

      var cmap = void 0;
      if (inputSourceMap) {
        cmap = (0, _util.consumeMap)(_this, source, inputSourceMap);
        source = cmap.sourcesContent.join('');
        // printSourceWithLine(source)
      }

      var iterator = (0, _util.splitSourceLine)(content).map(function (input, line) {
        // contentLineCount++
        line = line + 1;
        var originalLine = line + contentLineStart;
        var generatedLine = line;
        if (cmap) {
          // mapping to the original of input source
          originalLine = cmap.mapping['line-' + originalLine + '-column-0'].line;
          // console.log(originalLine + ':', input)
        }
        return {
          original: {
            line: originalLine,
            column: 0
          },
          generated: {
            line: generatedLine,
            column: 0
          }
        };
      });

      // if (type === 'scripts') {
      //   let lineStart = contentLineStart
      //   if (cmap) {
      //     // mapping to the original of input source
      //     lineStart = cmap.mapping[`line-${lineStart}-column-0`].line
      //   }
      //   source = splitSourceLine(source)
      //     .map((input, line) => {
      //       line = line + 1
      //       // console.log(line + ':', input)
      //       if (line === lineStart
      //           || line === lineStart + contentLineCount + 1) {
      //         return input + ' /* generated by weex-loader */'
      //       } else {
      //         return input
      //       }
      //     }).join('\n')
      // }

      map = (0, _util.generateMap)(_this, source, iterator);
    }

    return [content, map];
  }).then(function (_ref) {
    var _ref2 = _slicedToArray(_ref, 2),
        content = _ref2[0],
        map = _ref2[1];

    callback(null, content, map && map.toJSON() || inputSourceMap);
  }).catch(function (e) {
    callback(e, '');
  });
};