[tcgc] add example model in tcgc

.chronus/changes/tcgc_sample-2024-5-24-18-19-39.md

@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@azure-tools/typespec-client-generator-core"
+---
+
+add example types support

packages/typespec-client-generator-core/package.json

@@ -61,6 +61,7 @@
     "@azure-tools/typespec-azure-core": "workspace:~",
     "@typespec/compiler": "workspace:~",
     "@typespec/http": "workspace:~",
+    "@typespec/openapi": "workspace:~",
     "@typespec/rest": "workspace:~",
     "@typespec/versioning": "workspace:~"
   },
@@ -70,6 +71,7 @@
     "@types/pluralize": "^0.0.33",
     "@typespec/compiler": "workspace:~",
     "@typespec/http": "workspace:~",
+    "@typespec/openapi": "workspace:~",
     "@typespec/library-linter": "workspace:~",
     "@typespec/prettier-plugin-typespec": "workspace:~",
     "@typespec/rest": "workspace:~",

packages/typespec-client-generator-core/src/decorators.ts

@@ -29,6 +29,7 @@ import {
 } from "@typespec/compiler";
 import { isHeader } from "@typespec/http";
 import { buildVersionProjections, getVersions } from "@typespec/versioning";
+import { handleClientExamples } from "./example.js";
 import {
   AccessFlags,
   LanguageScopes,
@@ -581,14 +582,14 @@ interface CreateSdkContextOptions {
   readonly versionStrategy?: "ignore";
 }
 
-export function createSdkContext<
+export async function createSdkContext<
   TOptions extends Record<string, any> = SdkEmitterOptions,
   TServiceOperation extends SdkServiceOperation = SdkHttpOperation,
 >(
   context: EmitContext<TOptions>,
   emitterName?: string,
   options?: CreateSdkContextOptions
-): SdkContext<TOptions, TServiceOperation> {
+): Promise<SdkContext<TOptions, TServiceOperation>> {
   const diagnostics = createDiagnosticCollector();
   const protocolOptions = true; // context.program.getLibraryOptions("generate-protocol-methods");
   const convenienceOptions = true; // context.program.getLibraryOptions("generate-convenience-methods");
@@ -613,8 +614,13 @@ export function createSdkContext<
     __namespaceToApiVersionParameter: new Map(),
     __tspTypeToApiVersions: new Map(),
     __namespaceToApiVersionClientDefaultValue: new Map(),
+    examplesDirectory: context.options["examples-directory"],
   };
   sdkContext.experimental_sdkPackage = getSdkPackage(sdkContext);
+  for (const client of sdkContext.experimental_sdkPackage.clients) {
+    diagnostics.pipe(await handleClientExamples(sdkContext, client));
+  }
+
   if (sdkContext.diagnostics) {
     sdkContext.diagnostics = sdkContext.diagnostics.concat(
       sdkContext.experimental_sdkPackage.diagnostics // eslint-disable-line deprecation/deprecation