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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 {
getSelectedFrame,
getCurrentThread,
getIsCurrentThreadPaused,
getIsPaused,
} from "../../selectors/index";
import { PROMISE } from "../utils/middleware/promise";
import { evaluateExpressions } from "../expressions";
import { selectLocation } from "../sources/index";
import { fetchScopes } from "./fetchScopes";
import { fetchFrames } from "./fetchFrames";
import { recordEvent } from "../../utils/telemetry";
import { validateFrame } from "../../utils/context";
export function selectThread(thread) {
return async ({ dispatch, getState }) => {
if (getCurrentThread(getState()) === thread) {
return;
}
dispatch({ type: "SELECT_THREAD", thread });
const selectedFrame = getSelectedFrame(getState(), thread);
const serverRequests = [];
// Update the watched expressions as we may never have evaluated them against this thread
// Note that selectedFrame may be null if the thread isn't paused.
serverRequests.push(dispatch(evaluateExpressions(selectedFrame)));
// If we were paused on the newly selected thread, ensure:
// - select the source where we are paused,
// - fetching the paused stackframes,
// - fetching the paused scope, so that variable preview are working on the selected source.
// (frames and scopes is supposed to be fetched on pause,
// but if two threads pause concurrently, it might be cancelled)
if (selectedFrame) {
serverRequests.push(dispatch(selectLocation(selectedFrame.location)));
serverRequests.push(dispatch(fetchFrames(thread)));
serverRequests.push(dispatch(fetchScopes(selectedFrame)));
}
await Promise.all(serverRequests);
};
}
/**
* Debugger commands like stepOver, stepIn, stepOut, resume
*
* @param string type
*/
export function command(type) {
return async ({ dispatch, getState, client }) => {
if (!type) {
return null;
}
// For now, all commands are by default against the currently selected thread
const thread = getCurrentThread(getState());
const frame = getSelectedFrame(getState(), thread);
return dispatch({
type: "COMMAND",
command: type,
thread,
[PROMISE]: client[type](thread, frame?.id),
});
};
}
/**
* StepIn
*
* @returns {Function} {@link command}
*/
export function stepIn() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch(command("stepIn"));
};
}
/**
* stepOver
*
* @returns {Function} {@link command}
*/
export function stepOver() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch(command("stepOver"));
};
}
/**
* stepOut
*
* @returns {Function} {@link command}
*/
export function stepOut() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch(command("stepOut"));
};
}
/**
* resume
*
* @returns {Function} {@link command}
*/
export function resume() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
recordEvent("continue");
return dispatch(command("resume"));
};
}
/**
* restart frame
*/
export function restart(frame) {
return async ({ dispatch, getState, client }) => {
if (!getIsPaused(getState(), frame.thread)) {
return null;
}
validateFrame(getState(), frame);
return dispatch({
type: "COMMAND",
command: "restart",
thread: frame.thread,
[PROMISE]: client.restart(frame.thread, frame.id),
});
};
}
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