feat(vscode-lm): implement VS Code Language Models provider

Author: RaySinner

docs/vscode_lm_api_docs.md

@@ -42,7 +42,10 @@
     "ai",
     "llama"
   ],
-  "activationEvents": [],
+  "activationEvents": [
+    "onLanguage",
+    "onStartupFinished"
+  ],
   "main": "./dist/extension.js",
   "contributes": {
     "viewsContainers": {
@@ -141,6 +144,20 @@
             "git show"
           ],
           "description": "Commands that can be auto-executed when 'Always approve execute operations' is enabled"
+        },
+        "roo-cline.vsCodeLmModelSelector": {
+          "type": "object",
+          "properties": {
+            "vendor": {
+              "type": "string",
+              "description": "The vendor of the language model (e.g. copilot)"
+            },
+            "family": {
+              "type": "string", 
+              "description": "The family of the language model (e.g. gpt-4)"
+            }
+          },
+          "description": "Settings for VSCode Language Model API"
         }
       }
     }

package.json

@@ -10,41 +10,45 @@ import { LmStudioHandler } from "./providers/lmstudio"
 import { GeminiHandler } from "./providers/gemini"
 import { OpenAiNativeHandler } from "./providers/openai-native"
 import { DeepSeekHandler } from "./providers/deepseek"
+import { VsCodeLmHandler } from "./providers/vscode-lm"
 import { ApiStream } from "./transform/stream"
 
 export interface SingleCompletionHandler {
-	completePrompt(prompt: string): Promise<string>
+  completePrompt(prompt: string): Promise<string>
 }
 
 export interface ApiHandler {
-	createMessage(systemPrompt: string, messages: Anthropic.Messages.MessageParam[]): ApiStream
-	getModel(): { id: string; info: ModelInfo }
+  createMessage(systemPrompt: string, messages: Anthropic.Messages.MessageParam[]): ApiStream
+  getModel(): { id: string; info: ModelInfo }
 }
 
 export function buildApiHandler(configuration: ApiConfiguration): ApiHandler {
-	const { apiProvider, ...options } = configuration
-	switch (apiProvider) {
-		case "anthropic":
-			return new AnthropicHandler(options)
-		case "openrouter":
-			return new OpenRouterHandler(options)
-		case "bedrock":
-			return new AwsBedrockHandler(options)
-		case "vertex":
-			return new VertexHandler(options)
-		case "openai":
-			return new OpenAiHandler(options)
-		case "ollama":
-			return new OllamaHandler(options)
-		case "lmstudio":
-			return new LmStudioHandler(options)
-		case "gemini":
-			return new GeminiHandler(options)
-		case "openai-native":
-			return new OpenAiNativeHandler(options)
-		case "deepseek":
-			return new DeepSeekHandler(options)
-		default:
-			return new AnthropicHandler(options)
-	}
+  const { apiProvider, ...options } = configuration
+
+  switch (apiProvider) {
+    case "anthropic":
+      return new AnthropicHandler(options)
+    case "openrouter":
+      return new OpenRouterHandler(options)
+    case "bedrock":
+      return new AwsBedrockHandler(options)
+    case "vertex":
+      return new VertexHandler(options)
+    case "openai":
+      return new OpenAiHandler(options)
+    case "ollama":
+      return new OllamaHandler(options)
+    case "lmstudio":
+      return new LmStudioHandler(options)
+    case "gemini":
+      return new GeminiHandler(options)
+    case "openai-native":
+      return new OpenAiNativeHandler(options)
+    case "deepseek":
+      return new DeepSeekHandler(options)
+    case "vscode-lm":
+      return new VsCodeLmHandler(options)
+    default:
+      return new AnthropicHandler(options)
+  }
 }