Quelle source-maps.js Sprache: JAVA

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

import {
  debuggerToSourceMapLocation,
  sourceMapToDebuggerLocation,
} from "./location";
import { waitForSourceToBeRegisteredInStore } from "../client/firefox/create";

/**
* For any location, return the matching generated location.
* If this is already a generated location, returns the same location.
*
* In additional to `SourceMapLoader.getGeneratedLocation`,
* this asserts that the related source is still registered in the reducer current state.
*
* @param {Object} location
* @param {Object} thunkArgs
*        Redux action thunk arguments
* @param {Object}
*        The matching generated location.
*/
export async function getGeneratedLocation(location, thunkArgs) {
  if (!location.source.isOriginal) {
    return location;
  }

  const { sourceMapLoader, getState } = thunkArgs;
  const generatedLocation = await sourceMapLoader.getGeneratedLocation(
    debuggerToSourceMapLocation(location)
  );
  if (!generatedLocation) {
    return location;
  }

  return sourceMapToDebuggerLocation(getState(), generatedLocation);
}

/**
* For any location, return the matching original location.
* If this is already an original location, returns the same location.
*
* In additional to `SourceMapLoader.getOriginalLocation`,
* this automatically fetches the original source object in order to build
* the original location object.
*
* @param {Object} location
* @param {Object} thunkArgs
*        Redux action thunk arguments
* @param {Object} options
* @param {boolean} options.waitForSource
*        Default to false. If true is passed, this function will
*        ensure waiting, possibly asynchronously for the related original source
*        to be registered in the redux store.
* @param {boolean} options.looseSearch
*        Default to false. If true, this won't query an exact mapping,
*        but will also lookup for a loose match at the first column and next lines.
*
* @param {Object}
*        The matching original location.
*/
export async function getOriginalLocation(
  location,
  thunkArgs,
  { waitForSource = false, looseSearch = false } = {}
) {
  if (location.source.isOriginal) {
    return location;
  }
  const { getState, sourceMapLoader } = thunkArgs;
  const originalLocation = await sourceMapLoader.getOriginalLocation(
    debuggerToSourceMapLocation(location),
    { looseSearch }
  );
  if (!originalLocation) {
    return location;
  }

  // When we are mapping frames while being paused,
  // the original source may not be registered yet in the reducer.
  if (waitForSource) {
    await waitForSourceToBeRegisteredInStore(originalLocation.sourceId);
  }

  return sourceMapToDebuggerLocation(getState(), originalLocation);
}

export async function getMappedLocation(location, thunkArgs) {
  if (location.source.isOriginal) {
    const generatedLocation = await getGeneratedLocation(location, thunkArgs);
    return { location, generatedLocation };
  }

  const generatedLocation = location;
  const originalLocation = await getOriginalLocation(
    generatedLocation,
    thunkArgs
  );

  return { location: originalLocation, generatedLocation };
}

/**
* Gets the "mapped location".
*
* If the passed location is on a generated source, it gets the
* related location in the original source.
* If the passed location is on an original source, it gets the
* related location in the generated source.
*/
export async function getRelatedMapLocation(location, thunkArgs) {
  if (!location.source) {
    return location;
  }

  if (location.source.isOriginal) {
    return getGeneratedLocation(location, thunkArgs);
  }

  return getOriginalLocation(location, thunkArgs);
}

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