mozilla-central/devtools/client/memory/reducers/allocations.js (file symbol)

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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/. */
"use strict";
const { assert } = require("resource://devtools/shared/DevToolsUtils.js");
const { actions } = require("resource://devtools/client/memory/constants.js");
const handlers = Object.create(null);
handlers[actions.TOGGLE_RECORD_ALLOCATION_STACKS_START] = function (state) {
assert(
!state.togglingInProgress,
"Changing recording state must not be reentrant."
);
return {
recording: !state.recording,
togglingInProgress: true,
};
};
handlers[actions.TOGGLE_RECORD_ALLOCATION_STACKS_END] = function (state) {
assert(
state.togglingInProgress,
"Should not complete changing recording state if we weren't changing " +
"recording state already."
);
return {
recording: state.recording,
togglingInProgress: false,
};
};
const DEFAULT_ALLOCATIONS_STATE = {
recording: false,
togglingInProgress: false,
};
module.exports = function (state = DEFAULT_ALLOCATIONS_STATE, action) {
const handle = handlers[action.type];
if (handle) {
return handle(state, action);
}
return state;
};