* @param {number} sourceColumn
 * @param {string} sourceID
 * @param {(string|object)} [reason=unknown]
 *
 * @return {Promise<boolean>}
 */
exports.viewSourceInDebugger = async function (
  toolbox,
  generatedURL,
  generatedLine,
  generatedColumn,
  sourceActorId,
  reason = "unknown"
) {
  // Load the debugger in the background
  const dbg = await toolbox.loadTool("jsdebugger");

  const openedSourceInDebugger = await dbg.openSourceInDebugger({
    generatedURL,
    generatedLine,
    generatedColumn,
    sourceActorId,
    reason,
  });

  if (openedSourceInDebugger) {
    toolbox.emitForTests("source-opened-in-debugger");
    return true;
  }

  // Fallback to built-in firefox view-source:
  exports.viewSource(toolbox, generatedURL, generatedLine, generatedColumn);
  return false;
};

async function getOriginalLocation(
  toolbox,
  generatedID,
  generatedLine,
  generatedColumn
) {
  // If there is no line number, then there's no chance that we'll get back
  // a useful original location.
  if (typeof generatedLine !== "number") {
    return null;
  }

  let originalLocation = null;
  try {
    originalLocation = await toolbox.sourceMapLoader.getOriginalLocation({
      sourceId: generatedID,
      line: generatedLine,
      column: generatedColumn,
    });
    if (originalLocation && originalLocation.sourceId === generatedID) {
      originalLocation = null;
    }
  } catch (err) {
    console.error(
      "Failed to resolve sourcemapped location for the given source location",
      { generatedID, generatedLine, generatedColumn },
      err
    );
  }
  return originalLocation;
}

/**
 * Open a link in Firefox's View Source.
 *
 * @param {Toolbox} toolbox
 * @param {string} sourceURL
 * @param {number} sourceLine
 * @param {number} sourceColumn
 *
 * @return {Promise}
 */
exports.viewSource = async function (
  toolbox,
  sourceURL,
  sourceLine,
  sourceColumn
) {
  const utils = toolbox.gViewSourceUtils;
  utils.viewSource({
    URL: sourceURL,
    lineNumber: sourceLine || -1,
    columnNumber: sourceColumn || -1,
  });
};
PK