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/* 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/>. */
// @flow
import SourceMaps, { isOriginalId } from "devtools-source-map";
import { getSource } from "../selectors";
import type { SourceLocation, MappedLocation, Source } from "../types";
export async function getGeneratedLocation(
state: Object,
source: Source,
location: SourceLocation,
sourceMaps: typeof SourceMaps
): Promise<SourceLocation> {
if (!isOriginalId(location.sourceId)) {
return location;
}
const { line, sourceId, column } = await sourceMaps.getGeneratedLocation(
location
);
const generatedSource = getSource(state, sourceId);
if (!generatedSource) {
throw new Error(`Could not find generated source ${sourceId}`);
}
return {
line,
sourceId,
column: column === 0 ? undefined : column,
sourceUrl: generatedSource.url,
};
}
export async function getOriginalLocation(
generatedLocation: SourceLocation,
sourceMaps: typeof SourceMaps
) {
if (isOriginalId(generatedLocation.sourceId)) {
return location;
}
return sourceMaps.getOriginalLocation(generatedLocation);
}
export async function getMappedLocation(
state: Object,
sourceMaps: typeof SourceMaps,
location: SourceLocation
): Promise<MappedLocation> {
const source = getSource(state, location.sourceId);
if (!source) {
throw new Error(`no source ${location.sourceId}`);
}
if (isOriginalId(location.sourceId)) {
const generatedLocation = await getGeneratedLocation(
state,
source,
location,
sourceMaps
);
return { location, generatedLocation };
}
const generatedLocation = location;
const originalLocation = await sourceMaps.getOriginalLocation(
generatedLocation
);
return { location: originalLocation, generatedLocation };
}
export async function mapLocation(
state: Object,
sourceMaps: typeof SourceMaps,
location: SourceLocation
): Promise<SourceLocation> {
const source = getSource(state, location.sourceId);
if (!source) {
return location;
}
if (isOriginalId(location.sourceId)) {
return getGeneratedLocation(state, source, location, sourceMaps);
}
return sourceMaps.getOriginalLocation(location);
}
export function isOriginalSource(source: ?Source) {
if (!source) {
return false;
}
if (!source.hasOwnProperty("isOriginal")) {
throw new Error("source must have an isOriginal property");
}
return source.isOriginal;
}
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