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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,
getThreadContext,
getCurrentThread,
getIsCurrentThreadPaused,
} from "../../selectors";
import { PROMISE } from "../utils/middleware/promise";
import { evaluateExpressions } from "../expressions";
import { selectLocation } from "../sources";
import { fetchScopes } from "./fetchScopes";
import { fetchFrames } from "./fetchFrames";
import { recordEvent } from "../../utils/telemetry";
import assert from "../../utils/assert";
export function selectThread(cx, thread) {
return async ({ dispatch, getState, client }) => {
if (getCurrentThread(getState()) === thread) {
return;
}
dispatch({ cx, type: "SELECT_THREAD", thread });
// Get a new context now that the current thread has changed.
const threadcx = getThreadContext(getState());
// Note that this is a rethorical assertion as threadcx.thread is updated by SELECT_THREAD action
assert(threadcx.thread == thread, "Thread mismatch");
const serverRequests = [];
// Update the watched expressions as we may never have evaluated them against this thread
serverRequests.push(dispatch(evaluateExpressions(threadcx)));
// 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)
const frame = getSelectedFrame(getState(), thread);
if (frame) {
serverRequests.push(dispatch(selectLocation(threadcx, frame.location)));
serverRequests.push(dispatch(fetchFrames(threadcx)));
serverRequests.push(dispatch(fetchScopes(threadcx)));
}
await Promise.all(serverRequests);
};
}
/**
* Debugger commands like stepOver, stepIn, stepUp
*
* @param string $0.type
* @memberof actions/pause
* @static
*/
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
* @memberof actions/pause
* @static
* @returns {Function} {@link command}
*/
export function stepIn() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch(command("stepIn"));
};
}
/**
* stepOver
* @memberof actions/pause
* @static
* @returns {Function} {@link command}
*/
export function stepOver() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch(command("stepOver"));
};
}
/**
* stepOut
* @memberof actions/pause
* @static
* @returns {Function} {@link command}
*/
export function stepOut() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch(command("stepOut"));
};
}
/**
* resume
* @memberof actions/pause
* @static
* @returns {Function} {@link command}
*/
export function resume() {
return ({ dispatch, getState }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
recordEvent("continue");
return dispatch(command("resume"));
};
}
/**
* restart frame
* @memberof actions/pause
* @static
*/
export function restart(cx, frame) {
return async ({ dispatch, getState, client }) => {
if (!getIsCurrentThreadPaused(getState())) {
return null;
}
return dispatch({
type: "COMMAND",
command: "restart",
thread: cx.thread,
[PROMISE]: client.restart(cx.thread, frame.id),
});
};
}
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