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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/>. */
import {
getFrames,
getBlackBoxRanges,
getSelectedFrame,
} from "../../selectors";
import { isFrameBlackBoxed } from "../../utils/source";
import assert from "../../utils/assert";
import { getOriginalLocation } from "../../utils/source-maps";
import {
debuggerToSourceMapLocation,
sourceMapToDebuggerLocation,
} from "../../utils/location";
import { isGeneratedId } from "devtools/client/shared/source-map-loader/index";
function getSelectedFrameId(state, thread, frames) {
let selectedFrame = getSelectedFrame(state, thread);
const blackboxedRanges = getBlackBoxRanges(state);
if (selectedFrame && !isFrameBlackBoxed(selectedFrame, blackboxedRanges)) {
return selectedFrame.id;
}
selectedFrame = frames.find(frame => {
return !isFrameBlackBoxed(frame, blackboxedRanges);
});
return selectedFrame?.id;
}
async function updateFrameLocation(frame, thunkArgs) {
if (frame.isOriginal) {
return Promise.resolve(frame);
}
const location = await getOriginalLocation(frame.location, thunkArgs, true);
return {
...frame,
location,
generatedLocation: frame.generatedLocation || frame.location,
};
}
function updateFrameLocations(frames, thunkArgs) {
if (!frames || !frames.length) {
return Promise.resolve(frames);
}
return Promise.all(
frames.map(frame => updateFrameLocation(frame, thunkArgs))
);
}
function isWasmOriginalSourceFrame(frame, getState) {
if (isGeneratedId(frame.location.sourceId)) {
return false;
}
return Boolean(frame.generatedLocation?.source.isWasm);
}
async function expandFrames(frames, { getState, sourceMapLoader }) {
const result = [];
for (let i = 0; i < frames.length; ++i) {
const frame = frames[i];
if (frame.isOriginal || !isWasmOriginalSourceFrame(frame, getState)) {
result.push(frame);
continue;
}
const originalFrames = await sourceMapLoader.getOriginalStackFrames(
debuggerToSourceMapLocation(frame.generatedLocation)
);
if (!originalFrames) {
result.push(frame);
continue;
}
assert(!!originalFrames.length, "Expected at least one original frame");
// First entry has not specific location -- use one from original frame.
originalFrames[0] = {
...originalFrames[0],
location: frame.location,
};
originalFrames.forEach((originalFrame, j) => {
if (!originalFrame.location) {
return;
}
// Keep outer most frame with true actor ID, and generate uniquie
// one for the nested frames.
const id = j == 0 ? frame.id : `${frame.id}-originalFrame${j}`;
result.push({
id,
displayName: originalFrame.displayName,
location: sourceMapToDebuggerLocation(
getState(),
originalFrame.location
),
index: frame.index,
source: null,
thread: frame.thread,
scope: frame.scope,
this: frame.this,
isOriginal: true,
// More fields that will be added by the mapDisplayNames and
// updateFrameLocation.
generatedLocation: frame.generatedLocation,
originalDisplayName: originalFrame.displayName,
originalVariables: originalFrame.variables,
asyncCause: frame.asyncCause,
state: frame.state,
});
});
}
return result;
}
/**
* Map call stack frame locations and display names to originals.
* e.g.
* 1. When the debuggee pauses
* 2. When a source is pretty printed
* 3. When symbols are loaded
* @memberof actions/pause
* @static
*/
export function mapFrames(cx) {
return async function (thunkArgs) {
const { dispatch, getState } = thunkArgs;
const frames = getFrames(getState(), cx.thread);
if (!frames) {
return;
}
let mappedFrames = await updateFrameLocations(frames, thunkArgs);
mappedFrames = await expandFrames(mappedFrames, thunkArgs);
const selectedFrameId = getSelectedFrameId(
getState(),
cx.thread,
mappedFrames
);
dispatch({
type: "MAP_FRAMES",
cx,
thread: cx.thread,
frames: mappedFrames,
selectedFrameId,
});
};
}
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