CodeMapper support (#55406)

src/server/protocol.ts

@@ -200,6 +200,7 @@ export const enum CommandTypes {
     ProvideCallHierarchyOutgoingCalls = "provideCallHierarchyOutgoingCalls",
     ProvideInlayHints = "provideInlayHints",
     WatchChange = "watchChange",
+    MapCode = "mapCode",
 }
 
 /**
@@ -2342,6 +2343,38 @@ export interface InlayHintsResponse extends Response {
     body?: InlayHintItem[];
 }
 
+export interface MapCodeRequestArgs extends FileRequestArgs {
+    /**
+     * The files and changes to try and apply/map.
+     */
+    mapping: MapCodeRequestDocumentMapping;
+}
+
+export interface MapCodeRequestDocumentMapping {
+    /**
+     * The specific code to map/insert/replace in the file.
+     */
+    contents: string[];
+
+    /**
+     * Areas of "focus" to inform the code mapper with. For example, cursor
+     * location, current selection, viewport, etc. Nested arrays denote
+     * priority: toplevel arrays are more important than inner arrays, and
+     * inner array priorities are based on items within that array. Items
+     * earlier in the arrays have higher priority.
+     */
+    focusLocations?: TextSpan[][];
+}
+
+export interface MapCodeRequest extends FileRequest {
+    command: CommandTypes.MapCode;
+    arguments: MapCodeRequestArgs;
+}
+
+export interface MapCodeResponse extends Response {
+    body: readonly FileCodeEdits[];
+}
+
 /**
  * Synchronous request for semantic diagnostics of one file.
  */