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reducer.ts ×14

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1468 tests · 11340 LOC · 50 files · introduces 0 tests · 635 LOC · 10 files

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10 files ranked by introduced lines: 635 introduced LOC across 27 ranges. Expand a file to inspect source; the > gutter marks introduced lines.

src/vs/platform/agentHost/common/state/protocol/action-origin.generated.ts 365 introduced LOC · 1 range

Open complete file

1 > /*--------------------------------------------------------------------------------------------- action-origin.generated.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > // Generated from types/actions.ts — do not edit
10 > // Run `npm run generate` to regenerate.
11 >
12 > import { ActionType, type StateAction, type RootAgentsChangedAction, type RootActiveSessionsChangedAction, type RootTerminalsChangedAction, type RootConfigChangedAction, type SessionReadyAction, type SessionCreationFailedAction, type SessionChatAddedAction, type SessionChatRemovedAction, type SessionChatUpdatedAction, type SessionDefaultChatChangedAction, type SessionTitleChangedAction, type SessionServerToolsChangedAction, type SessionActiveClientSetAction, type SessionActiveClientRemovedAction, type SessionWorkingDirectorySetAction, type SessionWorkingDirectoryRemovedAction, type SessionInputNeededSetAction, type SessionInputNeededRemovedAction, type SessionCustomizationsChangedAction, type SessionCustomizationToggledAction, type SessionCustomizationUpdatedAction, type SessionCustomizationRemovedAction, type SessionMcpServerStateChangedAction, type SessionMcpServerStartRequestedAction, type SessionMcpServerStopRequestedAction, type SessionIsReadChangedAction, type SessionIsArchivedChangedAction, type SessionActivityChangedAction, type SessionChangesetsChangedAction, type SessionConfigChangedAction, type SessionMetaChangedAction, type ChatTurnStartedAction, type ChatDeltaAction, type ChatResponsePartAction, type ChatToolCallStartAction, type ChatToolCallDeltaAction, type ChatToolCallReadyAction, type ChatToolCallConfirmedAction, type ChatToolCallCompleteAction, type ChatToolCallResultConfirmedAction, type ChatToolCallContentChangedAction, type ChatToolCallAuthRequiredAction, type ChatToolCallAuthResolvedAction, type ChatTurnCompleteAction, type ChatTurnCancelledAction, type ChatErrorAction, type ChatActivityChangedAction, type ChatWorkingDirectorySetAction, type ChatWorkingDirectoryRemovedAction, type ChatUsageAction, type ChatReasoningAction, type ChatPendingMessageSetAction, type ChatPendingMessageRemovedAction, type ChatQueuedMessagesReorderedAction, type ChatDraftChangedAction, type ChatInputRequestedAction, type ChatInputAnswerChangedAction, type ChatInputCompletedAction, type ChatTruncatedAction, type ChatTurnsLoadedAction, type ChangesetStatusChangedAction, type ChangesetFileSetAction, type ChangesetFileRemovedAction, type ChangesetFilesReviewChangedAction, type ChangesetContentChangedAction, type ChangesetOperationsChangedAction, type ChangesetOperationStatusChangedAction, type ChangesetClearedAction, type AnnotationsSetAction, type AnnotationsUpdatedAction, type AnnotationsRemovedAction, type AnnotationsEntrySetAction, type AnnotationsEntryRemovedAction, type TerminalDataAction, type TerminalInputAction, type TerminalResizedAction, type TerminalClaimedAction, type TerminalTitleChangedAction, type TerminalCwdChangedAction, type TerminalExitedAction, type TerminalClearedAction, type TerminalCommandDetectionAvailableAction, type TerminalCommandExecutedAction, type TerminalCommandFinishedAction, type ResourceWatchChangedAction } from './actions.js';
13 >
14 >
15 > // ─── Root vs Session vs Chat vs Terminal vs Changeset Action Unions ─────────────────
16 >
17 > /** Union of all root-scoped actions. */
18 > export type RootAction =
19 > | RootAgentsChangedAction
20 > | RootActiveSessionsChangedAction
21 > | RootTerminalsChangedAction
22 > | RootConfigChangedAction
23 > ;
24 >
25 > /** Union of root actions that clients may dispatch. */
26 > export type ClientRootAction =
27 > | RootConfigChangedAction
28 > ;
29 >
30 > /** Union of root actions that only the server may produce. */
31 > export type ServerRootAction =
32 > | RootAgentsChangedAction
33 > | RootActiveSessionsChangedAction
34 > | RootTerminalsChangedAction
35 > ;
36 >
37 > /** Union of all session-scoped actions. */
38 > export type SessionAction =
39 > | SessionReadyAction
40 > | SessionCreationFailedAction
41 > | SessionChatAddedAction
42 > | SessionChatRemovedAction
43 > | SessionChatUpdatedAction
44 > | SessionDefaultChatChangedAction
45 > | SessionTitleChangedAction
46 > | SessionServerToolsChangedAction
47 > | SessionActiveClientSetAction
48 > | SessionActiveClientRemovedAction
49 > | SessionWorkingDirectorySetAction
50 > | SessionWorkingDirectoryRemovedAction
51 > | SessionInputNeededSetAction
52 > | SessionInputNeededRemovedAction
53 > | SessionCustomizationsChangedAction
54 > | SessionCustomizationToggledAction
55 > | SessionCustomizationUpdatedAction
56 > | SessionCustomizationRemovedAction
57 > | SessionMcpServerStateChangedAction
58 > | SessionMcpServerStartRequestedAction
59 > | SessionMcpServerStopRequestedAction
60 > | SessionIsReadChangedAction
61 > | SessionIsArchivedChangedAction
62 > | SessionActivityChangedAction
63 > | SessionChangesetsChangedAction
64 > | SessionConfigChangedAction
65 > | SessionMetaChangedAction
66 > ;
67 >
68 > /** Union of session actions that clients may dispatch. */
69 > export type ClientSessionAction =
70 > | SessionTitleChangedAction
71 > | SessionActiveClientSetAction
72 > | SessionActiveClientRemovedAction
73 > | SessionWorkingDirectorySetAction
74 > | SessionWorkingDirectoryRemovedAction
75 > | SessionCustomizationToggledAction
76 > | SessionMcpServerStartRequestedAction
77 > | SessionMcpServerStopRequestedAction
78 > | SessionIsReadChangedAction
79 > | SessionIsArchivedChangedAction
80 > | SessionConfigChangedAction
81 > ;
82 >
83 > /** Union of session actions that only the server may produce. */
84 > export type ServerSessionAction =
85 > | SessionReadyAction
86 > | SessionCreationFailedAction
87 > | SessionChatAddedAction
88 > | SessionChatRemovedAction
89 > | SessionChatUpdatedAction
90 > | SessionDefaultChatChangedAction
91 > | SessionServerToolsChangedAction
92 > | SessionInputNeededSetAction
93 > | SessionInputNeededRemovedAction
94 > | SessionCustomizationsChangedAction
95 > | SessionCustomizationUpdatedAction
96 > | SessionCustomizationRemovedAction
97 > | SessionMcpServerStateChangedAction
98 > | SessionActivityChangedAction
99 > | SessionChangesetsChangedAction
100 > | SessionMetaChangedAction
101 > ;
102 >
103 > /** Union of all chat-scoped actions. */
104 > export type ChatAction =
105 > | ChatTurnStartedAction
106 > | ChatDeltaAction
107 > | ChatResponsePartAction
108 > | ChatToolCallStartAction
109 > | ChatToolCallDeltaAction
110 > | ChatToolCallReadyAction
111 > | ChatToolCallConfirmedAction
112 > | ChatToolCallCompleteAction
113 > | ChatToolCallResultConfirmedAction
114 > | ChatToolCallContentChangedAction
115 > | ChatToolCallAuthRequiredAction
116 > | ChatToolCallAuthResolvedAction
117 > | ChatTurnCompleteAction
118 > | ChatTurnCancelledAction
119 > | ChatErrorAction
120 > | ChatActivityChangedAction
121 > | ChatWorkingDirectorySetAction
122 > | ChatWorkingDirectoryRemovedAction
123 > | ChatUsageAction
124 > | ChatReasoningAction
125 > | ChatPendingMessageSetAction
126 > | ChatPendingMessageRemovedAction
127 > | ChatQueuedMessagesReorderedAction
128 > | ChatDraftChangedAction
129 > | ChatInputRequestedAction
130 > | ChatInputAnswerChangedAction
131 > | ChatInputCompletedAction
132 > | ChatTruncatedAction
133 > | ChatTurnsLoadedAction
134 > ;
135 >
136 > /** Union of chat actions that clients may dispatch. */
137 > export type ClientChatAction =
138 > | ChatTurnStartedAction
139 > | ChatToolCallConfirmedAction
140 > | ChatToolCallCompleteAction
141 > | ChatToolCallResultConfirmedAction
142 > | ChatToolCallContentChangedAction
143 > | ChatTurnCancelledAction
144 > | ChatWorkingDirectorySetAction
145 > | ChatWorkingDirectoryRemovedAction
146 > | ChatPendingMessageSetAction
147 > | ChatPendingMessageRemovedAction
148 > | ChatQueuedMessagesReorderedAction
149 > | ChatDraftChangedAction
150 > | ChatInputAnswerChangedAction
151 > | ChatInputCompletedAction
152 > | ChatTruncatedAction
153 > ;
154 >
155 > /** Union of chat actions that only the server may produce. */
156 > export type ServerChatAction =
157 > | ChatDeltaAction
158 > | ChatResponsePartAction
159 > | ChatToolCallStartAction
160 > | ChatToolCallDeltaAction
161 > | ChatToolCallReadyAction
162 > | ChatToolCallAuthRequiredAction
163 > | ChatToolCallAuthResolvedAction
164 > | ChatTurnCompleteAction
165 > | ChatErrorAction
166 > | ChatActivityChangedAction
167 > | ChatUsageAction
168 > | ChatReasoningAction
169 > | ChatInputRequestedAction
170 > | ChatTurnsLoadedAction
171 > ;
172 >
173 > /** Union of all terminal-scoped actions. */
174 > export type TerminalAction =
175 > | TerminalDataAction
176 > | TerminalInputAction
177 > | TerminalResizedAction
178 > | TerminalClaimedAction
179 > | TerminalTitleChangedAction
180 > | TerminalCwdChangedAction
181 > | TerminalExitedAction
182 > | TerminalClearedAction
183 > | TerminalCommandDetectionAvailableAction
184 > | TerminalCommandExecutedAction
185 > | TerminalCommandFinishedAction
186 > ;
187 >
188 > /** Union of terminal actions that clients may dispatch. */
189 > export type ClientTerminalAction =
190 > | TerminalInputAction
191 > | TerminalResizedAction
192 > | TerminalClaimedAction
193 > | TerminalTitleChangedAction
194 > | TerminalClearedAction
195 > ;
196 >
197 > /** Union of terminal actions that only the server may produce. */
198 > export type ServerTerminalAction =
199 > | TerminalDataAction
200 > | TerminalCwdChangedAction
201 > | TerminalExitedAction
202 > | TerminalCommandDetectionAvailableAction
203 > | TerminalCommandExecutedAction
204 > | TerminalCommandFinishedAction
205 > ;
206 >
207 > /** Union of all changeset-scoped actions. */
208 > export type ChangesetAction =
209 > | ChangesetStatusChangedAction
210 > | ChangesetFileSetAction
211 > | ChangesetFileRemovedAction
212 > | ChangesetFilesReviewChangedAction
213 > | ChangesetContentChangedAction
214 > | ChangesetOperationsChangedAction
215 > | ChangesetOperationStatusChangedAction
216 > | ChangesetClearedAction
217 > ;
218 >
219 > /** Union of changeset actions that clients may dispatch. */
220 > export type ClientChangesetAction =
221 > | ChangesetFilesReviewChangedAction
222 > ;
223 >
224 > /** Union of changeset actions that only the server may produce. */
225 > export type ServerChangesetAction =
226 > | ChangesetStatusChangedAction
227 > | ChangesetFileSetAction
228 > | ChangesetFileRemovedAction
229 > | ChangesetContentChangedAction
230 > | ChangesetOperationsChangedAction
231 > | ChangesetOperationStatusChangedAction
232 > | ChangesetClearedAction
233 > ;
234 >
235 > /** Union of all annotations-scoped actions. */
236 > export type AnnotationsAction =
237 > | AnnotationsSetAction
238 > | AnnotationsUpdatedAction
239 > | AnnotationsRemovedAction
240 > | AnnotationsEntrySetAction
241 > | AnnotationsEntryRemovedAction
242 > ;
243 >
244 > /** Union of annotations actions that clients may dispatch. */
245 > export type ClientAnnotationsAction =
246 > | AnnotationsSetAction
247 > | AnnotationsUpdatedAction
248 > | AnnotationsRemovedAction
249 > | AnnotationsEntrySetAction
250 > | AnnotationsEntryRemovedAction
251 > ;
252 >
253 > /** Union of annotations actions that only the server may produce. */
254 > export type ServerAnnotationsAction =
255 > never
256 > ;
257 >
258 > /** Union of all resource-watch-scoped actions. */
259 > export type ResourceWatchAction =
260 > | ResourceWatchChangedAction
261 > ;
262 >
263 > /** Union of resource-watch actions that clients may dispatch. */
264 > export type ClientResourceWatchAction =
265 > never
266 > ;
267 >
268 > /** Union of resource-watch actions that only the server may produce. */
269 > export type ServerResourceWatchAction =
270 > | ResourceWatchChangedAction
271 > ;
272 >
273 > // ─── Client-Dispatchable Map ─────────────────────────────────────────────────
274 >
275 > /**
276 > * Exhaustive map indicating which action types may be dispatched by clients.
277 > * Adding a new action to StateAction without adding it here is a compile error.
278 > */
279 > export const IS_CLIENT_DISPATCHABLE: { readonly [K in StateAction['type']]: boolean } = {
280 > [ActionType.RootAgentsChanged]: false,
281 > [ActionType.RootActiveSessionsChanged]: false,
282 > [ActionType.RootTerminalsChanged]: false,
283 > [ActionType.RootConfigChanged]: true,
284 > [ActionType.SessionReady]: false,
285 > [ActionType.SessionCreationFailed]: false,
286 > [ActionType.SessionChatAdded]: false,
287 > [ActionType.SessionChatRemoved]: false,
288 > [ActionType.SessionChatUpdated]: false,
289 > [ActionType.SessionDefaultChatChanged]: false,
290 > [ActionType.SessionTitleChanged]: true,
291 > [ActionType.SessionServerToolsChanged]: false,
292 > [ActionType.SessionActiveClientSet]: true,
293 > [ActionType.SessionActiveClientRemoved]: true,
294 > [ActionType.SessionWorkingDirectorySet]: true,
295 > [ActionType.SessionWorkingDirectoryRemoved]: true,
296 > [ActionType.SessionInputNeededSet]: false,
297 > [ActionType.SessionInputNeededRemoved]: false,
298 > [ActionType.SessionCustomizationsChanged]: false,
299 > [ActionType.SessionCustomizationToggled]: true,
300 > [ActionType.SessionCustomizationUpdated]: false,
301 > [ActionType.SessionCustomizationRemoved]: false,
302 > [ActionType.SessionMcpServerStateChanged]: false,
303 > [ActionType.SessionMcpServerStartRequested]: true,
304 > [ActionType.SessionMcpServerStopRequested]: true,
305 > [ActionType.SessionIsReadChanged]: true,
306 > [ActionType.SessionIsArchivedChanged]: true,
307 > [ActionType.SessionActivityChanged]: false,
308 > [ActionType.SessionChangesetsChanged]: false,
309 > [ActionType.SessionConfigChanged]: true,
310 > [ActionType.SessionMetaChanged]: false,
311 > [ActionType.ChatTurnStarted]: true,
312 > [ActionType.ChatDelta]: false,
313 > [ActionType.ChatResponsePart]: false,
314 > [ActionType.ChatToolCallStart]: false,
315 > [ActionType.ChatToolCallDelta]: false,
316 > [ActionType.ChatToolCallReady]: false,
317 > [ActionType.ChatToolCallConfirmed]: true,
318 > [ActionType.ChatToolCallComplete]: true,
319 > [ActionType.ChatToolCallResultConfirmed]: true,
320 > [ActionType.ChatToolCallContentChanged]: true,
321 > [ActionType.ChatToolCallAuthRequired]: false,
322 > [ActionType.ChatToolCallAuthResolved]: false,
323 > [ActionType.ChatTurnComplete]: false,
324 > [ActionType.ChatTurnCancelled]: true,
325 > [ActionType.ChatError]: false,
326 > [ActionType.ChatActivityChanged]: false,
327 > [ActionType.ChatWorkingDirectorySet]: true,
328 > [ActionType.ChatWorkingDirectoryRemoved]: true,
329 > [ActionType.ChatUsage]: false,
330 > [ActionType.ChatReasoning]: false,
331 > [ActionType.ChatPendingMessageSet]: true,
332 > [ActionType.ChatPendingMessageRemoved]: true,
333 > [ActionType.ChatQueuedMessagesReordered]: true,
334 > [ActionType.ChatDraftChanged]: true,
335 > [ActionType.ChatInputRequested]: false,
336 > [ActionType.ChatInputAnswerChanged]: true,
337 > [ActionType.ChatInputCompleted]: true,
338 > [ActionType.ChatTruncated]: true,
339 > [ActionType.ChatTurnsLoaded]: false,
340 > [ActionType.ChangesetStatusChanged]: false,
341 > [ActionType.ChangesetFileSet]: false,
342 > [ActionType.ChangesetFileRemoved]: false,
343 > [ActionType.ChangesetFilesReviewChanged]: true,
344 > [ActionType.ChangesetContentChanged]: false,
345 > [ActionType.ChangesetOperationsChanged]: false,
346 > [ActionType.ChangesetOperationStatusChanged]: false,
347 > [ActionType.ChangesetCleared]: false,
348 > [ActionType.AnnotationsSet]: true,
349 > [ActionType.AnnotationsUpdated]: true,
350 > [ActionType.AnnotationsRemoved]: true,
351 > [ActionType.AnnotationsEntrySet]: true,
352 > [ActionType.AnnotationsEntryRemoved]: true,
353 > [ActionType.TerminalData]: false,
354 > [ActionType.TerminalInput]: true,
355 > [ActionType.TerminalResized]: true,
356 > [ActionType.TerminalClaimed]: true,
357 > [ActionType.TerminalTitleChanged]: true,
358 > [ActionType.TerminalCwdChanged]: false,
359 > [ActionType.TerminalExited]: false,
360 > [ActionType.TerminalCleared]: true,
361 > [ActionType.TerminalCommandDetectionAvailable]: false,
362 > [ActionType.TerminalCommandExecuted]: false,
363 > [ActionType.TerminalCommandFinished]: false,
364 > [ActionType.ResourceWatchChanged]: false,
365 > };
src/vs/platform/agentHost/common/state/protocol/channels-chat/reducer.ts 70 introduced LOC · 14 ranges

Open complete file

1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import { TurnState, ToolCallStatus, ToolCallConfirmationReason, ToolCallCancellationReason, ToolCallContributorKind, ResponsePartKind, PendingMessageKind, type ChatState, type ToolCallState, type ResponsePart, type ToolCallResponsePart, type InputRequestResponsePart, type Turn, type PendingMessage, type ConfirmationOption } from './state.js';
11 > import { SessionStatus } from '../channels-session/state.js';
12 > import type { ChatAction } from '../action-origin.generated.js';
13 > import { softAssertNever } from '../common/reducer-helpers.js';
14 >
15 > // ─── Helpers ─────────────────────────────────────────────────────────────────
16 >
17 > /** Extracts the common base fields shared by all tool call lifecycle states. */
18 function tcBase(tc: ToolCallState) {
19 return {
26 };
27 }
28 > reducer.ts
29 function tcBaseWithMeta(tc: ToolCallState, meta: Record<string, unknown> | undefined) {
30 return {
33 };
34 }
35 > reducer.ts
36 > /** Resolves a selected option from the confirmation options array by ID. */
37 function resolveSelectedOption(options: ConfirmationOption[] | undefined, id: string | undefined): ConfirmationOption | undefined {
38 if (!id || !options) {
41 return options.find(o => o.id === id);
42 }
43 > reducer.ts
44 > /**
45 > * Returns `true` if the active turn has any tool call blocking on something
46 > * external to the turn itself — a pending confirmation/result-confirmation,
47 > * or a tool call paused on MCP authentication.
48 > */
49 function hasBlockingToolCall(state: ChatState): boolean {
50 if (!state.activeTurn) {
58 );
59 }
60 > reducer.ts
61 > /** Returns whether the active turn contains an input request awaiting submission. */
62 function hasOpenInputRequest(state: ChatState): boolean {
63 return state.activeTurn?.responseParts.some(part =>
65 ) ?? false;
66 }
67 > reducer.ts
68 function findOpenInputRequestPart(
69 responseParts: readonly ResponsePart[],
81 return part.kind === ResponsePartKind.InputRequest ? { index, part } : undefined;
82 }
83 > reducer.ts
84 > /** Bitmask covering the mutually-exclusive activity bits (bits 0–4). */
85 > const STATUS_ACTIVITY_MASK = (1 << 5) - 1;
86 >
87 > /** Sets or clears a metadata flag on a status value. */
88 function withStatusFlag(status: SessionStatus, flag: SessionStatus, set: boolean): SessionStatus {
89 return set ? status | flag : status & ~flag;
90 }
91 > reducer.ts
92 > /** Derives the summary status from live session work, preserving orthogonal flags. */
93 function summaryStatus(state: ChatState, terminalStatus?: SessionStatus.Error): SessionStatus {
94 let activity: SessionStatus;
105 return state.status & ~STATUS_ACTIVITY_MASK | activity;
106 }
107 > reducer.ts
108 > /**
109 > * Returns a state with `status` recomputed. Use this after reducers
110 > * that change data which feeds into {@link summaryStatus} (e.g. tool call
111 > * lifecycle transitions that may enter or leave a pending-confirmation state).
112 > */
113 function refreshSummaryStatus(state: ChatState): ChatState {
114 const status = summaryStatus(state);
118 return { ...state, status };
119 }
120 > reducer.ts
121 > /**
122 > * Ends the active turn, finalizing it into a completed turn record.
123 > *
124 > * Tool call parts with non-terminal states are forced to cancelled.
125 > * Pending permissions are stripped from tool call parts.
126 > */
127 function endTurn(
128 state: ChatState,
183 };
184 }
185 > reducer.ts
186 function upsertInputRequestPart(state: ChatState, request: InputRequestResponsePart['request']): ChatState {
187 const activeTurn = state.activeTurn;
213 return { ...next, status: withStatusFlag(summaryStatus(next), SessionStatus.IsRead, false), modifiedAt: new Date(Date.now()).toISOString() };
214 }
215 > reducer.ts
216 > /**
217 > * Immutably updates the tool call inside a `ToolCall` response part in the
218 > * active turn's `responseParts` array. Returns `state` unchanged if the
219 > * active turn or tool call doesn't match.
220 > */
221 function updateToolCallInParts(
222 state: ChatState,
252 };
253 }
254 > reducer.ts
255 > /**
256 > * Immutably updates a response part by `partId` in the active turn.
257 > * For markdown/reasoning parts, matches on `id`. For tool call parts,
258 > * matches on `toolCall.toolCallId`.
259 > */
260 function updateResponsePart(
261 state: ChatState,
292 };
293 }
294 > reducer.ts
295 >
296 > // ─── Chat Reducer ────────────────────────────────────────────────────────────
297 >
298 > /**
299 > * Pure reducer for chat state. Handles all {@link ChatAction} variants.
300 > */
301 > export function chatReducer(state: ChatState, action: ChatAction, log?: (msg: string) => void): ChatState {
302 switch (action.type) {
303 // ── Turn Lifecycle ────────────────────────────────────────────────────
src/vs/platform/agentHost/common/state/protocol/channels-session/reducer.ts 37 introduced LOC · 4 ranges

Open complete file

1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import { SessionLifecycle, SessionStatus, CustomizationType, McpServerStatus, type SessionState, type SessionInputRequest, type McpServerCustomization } from './state.js';
11 > import type { SessionAction } from '../action-origin.generated.js';
12 > import { softAssertNever } from '../common/reducer-helpers.js';
13 >
14 > // ─── Helpers ─────────────────────────────────────────────────────────────────
15 >
16 > /** Bitmask covering the mutually-exclusive activity bits (bits 0–4). */
17 > const STATUS_ACTIVITY_MASK = (1 << 5) - 1;
18 >
19 > /** Sets or clears a metadata flag on a status value. */
20 function withStatusFlag(status: SessionStatus, flag: SessionStatus, set: boolean): SessionStatus {
21 return set ? status | flag : status & ~flag;
22 }
23 > reducer.ts
24 > /**
25 > * Reflects the session-level {@link SessionState.inputNeeded | input queue}
26 > * into the activity bits of `status`. A non-empty queue promotes the activity
27 > * to {@link SessionStatus.InputNeeded}; emptying it clears the
28 > * input-needed-specific bit. Since `InputNeeded` implies
29 > * {@link SessionStatus.InProgress}, an unblocked turn falls back to
30 > * `InProgress` while an already-idle session stays idle. Orthogonal flags
31 > * (`IsRead` / `IsArchived`) are preserved.
32 > */
33 function withInputNeededStatus(status: SessionStatus, inputNeeded: readonly SessionInputRequest[]): SessionStatus {
34 if (inputNeeded.length > 0) {
37 return status & ~(SessionStatus.InputNeeded & ~SessionStatus.InProgress);
38 }
39 > reducer.ts
40 function updateMcpServerCustomization(
41 state: SessionState,
84 return { ...state, customizations: updated };
85 }
86 > reducer.ts
87 > // ─── Session Reducer ─────────────────────────────────────────────────────────
88 >
89 > /**
90 > * Pure reducer for session state. Handles all {@link SessionAction} variants.
91 > */
92 > export function sessionReducer(state: SessionState, action: SessionAction, log?: (msg: string) => void): SessionState {
93 switch (action.type) {
94 // ── Lifecycle ──────────────────────────────────────────────────────────
src/vs/platform/agentHost/common/state/protocol/channels-resource-watch/reducer.ts 31 introduced LOC · 1 range

Open complete file

1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import type { ResourceWatchState } from './state.js';
11 > import type { ResourceWatchAction } from '../action-origin.generated.js';
12 >
13 > /**
14 > * Pure reducer for resource-watch state. Handles every
15 > * {@link ResourceWatchAction} variant.
16 > *
17 > * Watches are intentionally event-pass-through: change events are
18 > * delivered via `resourceWatch/changed` actions but the reducer keeps no
19 > * history of them. The state therefore tracks only the watch descriptor,
20 > * which is set at subscription time and never mutates over the life of
21 > * the watch.
22 > *
23 > * The reducer uses an `if`/else shape rather than `switch`/`softAssertNever`
24 > * because `ResourceWatchAction` currently has a single variant — TypeScript
25 > * does not narrow single-variant discriminated unions to `never` after the
26 > * sole case branch, so the usual exhaustiveness pattern would not compile.
27 > * Unknown action types degrade gracefully (mirroring `softAssertNever`'s
28 > * runtime behaviour) so a client speaking an older protocol stays correct
29 > * if the server adds new `resourceWatch/*` actions in a future version.
30 > */
31 > export function resourceWatchReducer(state: ResourceWatchState, action: ResourceWatchAction, log?: (msg: string) => void): ResourceWatchState {
32 if (action.type === ActionType.ResourceWatchChanged) {
33 return state;
src/vs/platform/agentHost/common/state/protocol/channels-annotations/reducer.ts 29 introduced LOC · 1 range

Open complete file

1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import type { AnnotationEntry, Annotation, AnnotationsState } from './state.js';
11 > import type { AnnotationsAction } from '../action-origin.generated.js';
12 > import { softAssertNever } from '../common/reducer-helpers.js';
13 >
14 > /**
15 > * Pure reducer for annotations state. Handles every {@link AnnotationsAction}
16 > * variant.
17 > *
18 > * Per the spec, every annotations action is client-dispatchable; the reducer
19 > * runs identically on the client (optimistic, write-ahead) and the server. It
20 > * preserves the dispatch order of annotations (and of entries within an
21 > * annotation): new entries are appended; `*Set` actions with a matching id
22 > * replace in place, while actions whose target id is unknown are no-ops
23 > * (mirroring `changeset/fileRemoved` semantics). The single-entry
24 > * minimum invariant is enforced by producers, not the reducer — removing an
25 > * annotation's last entry via {@link AnnotationsEntryRemovedAction} (instead
26 > * of {@link AnnotationsRemovedAction}) would leave an empty annotation,
27 > * which is observable but not catastrophic.
28 > */
29 > export function annotationsReducer(state: AnnotationsState, action: AnnotationsAction, log?: (msg: string) => void): AnnotationsState {
30 switch (action.type) {
31 case ActionType.AnnotationsSet: {
src/vs/platform/agentHost/common/state/protocol/common/reducer-helpers.ts 29 introduced LOC · 2 ranges

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1 > /*--------------------------------------------------------------------------------------------- reducer-helpers.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { IS_CLIENT_DISPATCHABLE, type RootAction, type ClientRootAction, type SessionAction, type ClientSessionAction, type TerminalAction, type ClientTerminalAction, type ChangesetAction, type ClientChangesetAction, type AnnotationsAction, type ClientAnnotationsAction } from '../action-origin.generated.js';
10 >
11 > /**
12 > * Soft assertion for exhaustiveness checking. Place in the `default` branch of
13 > * a switch on a discriminated union so the compiler errors when a new variant
14 > * is added but not handled.
15 > *
16 > * At runtime, logs a warning instead of throwing so that forward-compatible
17 > * clients receiving unknown actions from a newer server degrade gracefully.
18 > */
19 > export function softAssertNever(value: never, log?: (msg: string) => void): void {
20 const msg = `Unhandled action type: ${JSON.stringify(value)}`;
21 (log ?? console.warn)(msg);
22 }
23 > reducer-helpers.ts
24 > // ─── Dispatch Validation ─────────────────────────────────────────────────────
25 >
26 > /**
27 > * Type guard that checks whether an action may be dispatched by a client.
28 > *
29 > * Servers SHOULD call this to validate incoming `dispatchAction` requests
30 > * and reject any action the client is not allowed to originate.
31 > */
32 > export function isClientDispatchable(action: RootAction | SessionAction | TerminalAction | ChangesetAction | AnnotationsAction): action is ClientRootAction | ClientSessionAction | ClientTerminalAction | ClientChangesetAction | ClientAnnotationsAction {
33 return IS_CLIENT_DISPATCHABLE[action.type];
34 }
src/vs/platform/agentHost/common/state/protocol/channels-changeset/reducer.ts 24 introduced LOC · 1 range

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1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import { ChangesetStatus, ChangesetOperationStatus, type ChangesetState, type ChangesetFile, type ChangesetOperation } from './state.js';
11 > import type { ChangesetAction } from '../action-origin.generated.js';
12 > import { softAssertNever } from '../common/reducer-helpers.js';
13 >
14 > /**
15 > * Pure reducer for changeset state. Handles all {@link ChangesetAction}
16 > * variants.
17 > *
18 > * The reducer preserves a stable file order by appending new files via
19 > * {@link ActionType.ChangesetFileSet} when the id is unknown, and replacing in
20 > * place when it matches an existing entry. Per-file review lives on
21 > * {@link ChangesetFile.reviewed} and is toggled (per file, in batches) by the
22 > * client-dispatchable {@link ActionType.ChangesetFilesReviewChanged}.
23 > */
24 > export function changesetReducer(state: ChangesetState, action: ChangesetAction, log?: (msg: string) => void): ChangesetState {
25 switch (action.type) {
26 case ActionType.ChangesetStatusChanged: {
src/vs/platform/agentHost/common/state/protocol/channels-root/reducer.ts 17 introduced LOC · 1 range

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1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import type { RootState } from './state.js';
11 > import type { RootAction } from '../action-origin.generated.js';
12 > import { softAssertNever } from '../common/reducer-helpers.js';
13 >
14 > /**
15 > * Pure reducer for root state. Handles all {@link RootAction} variants.
16 > */
17 > export function rootReducer(state: RootState, action: RootAction, log?: (msg: string) => void): RootState {
18 switch (action.type) {
19 case ActionType.RootAgentsChanged:
src/vs/platform/agentHost/common/state/protocol/channels-terminal/reducer.ts 17 introduced LOC · 1 range

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1 > /*--------------------------------------------------------------------------------------------- reducer.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > import { ActionType } from '../common/actions.js';
10 > import type { TerminalState, TerminalContentPart } from './state.js';
11 > import type { TerminalAction } from '../action-origin.generated.js';
12 > import { softAssertNever } from '../common/reducer-helpers.js';
13 >
14 > /**
15 > * Pure reducer for terminal state. Handles all {@link TerminalAction} variants.
16 > */
17 > export function terminalReducer(state: TerminalState, action: TerminalAction, log?: (msg: string) => void): TerminalState {
18 switch (action.type) {
19 case ActionType.TerminalData: {
src/vs/platform/agentHost/common/state/protocol/reducers.ts 16 introduced LOC · 1 range

Open complete file

1 > /*--------------------------------------------------------------------------------------------- reducers.ts
2 > * Copyright (c) Microsoft Corporation. All rights reserved.
3 > * Licensed under the MIT License. See License.txt in the project root for license information.
4 > *--------------------------------------------------------------------------------------------*/
5 >
6 > // allow-any-unicode-comment-file
7 > // DO NOT EDIT -- auto-generated by scripts/sync-agent-host-protocol.ts
8 >
9 > export { rootReducer } from './channels-root/reducer.js';
10 > export { sessionReducer } from './channels-session/reducer.js';
11 > export { chatReducer } from './channels-chat/reducer.js';
12 > export { terminalReducer } from './channels-terminal/reducer.js';
13 > export { changesetReducer } from './channels-changeset/reducer.js';
14 > export { annotationsReducer } from './channels-annotations/reducer.js';
15 > export { resourceWatchReducer } from './channels-resource-watch/reducer.js';
16 > export { softAssertNever, isClientDispatchable } from './common/reducer-helpers.js';

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