[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

.chronus/changes/tcgc_sample-2024-5-25-18-26-42.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@azure-tools/typespec-autorest"
+---
+
+create tcgc context change to async

.chronus/changes/tcgc_sample-2024-5-26-10-23-7.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@azure-tools/typespec-autorest-canonical"
+---
+
+adopt tcgc breaking 

packages/typespec-autorest-canonical/src/emitter.ts

@@ -50,7 +50,10 @@ interface ResolvedAutorestCanonicalEmitterOptions extends AutorestDocumentEmitte
 
 export async function $onEmit(context: EmitContext<AutorestCanonicalEmitterOptions>) {
   const resolvedOptions = { ...defaultOptions, ...context.options };
-  const tcgcSdkContext = createSdkContext(context, "@azure-tools/typespec-autorest-canonical");
+  const tcgcSdkContext = await createSdkContext(
+    context,
+    "@azure-tools/typespec-autorest-canonical"
+  );
   const armTypesDir = interpolatePath(
     resolvedOptions["arm-types-dir"] ?? "{project-root}/../../common-types/resource-management",
     {

packages/typespec-autorest/src/emit.ts

@@ -100,7 +100,7 @@ export async function getAllServicesAtAllVersions(
   program: Program,
   options: ResolvedAutorestEmitterOptions
 ): Promise<AutorestServiceRecord[]> {
-  const tcgcSdkContext = createSdkContext(
+  const tcgcSdkContext = await createSdkContext(
     { program, options: {} } as any,
     "@azure-tools/typespec-autorest",
     {

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:~"
   },
@@ -71,10 +72,10 @@
     "@typespec/compiler": "workspace:~",
     "@typespec/http": "workspace:~",
     "@typespec/library-linter": "workspace:~",
+    "@typespec/openapi": "workspace:~",
     "@typespec/prettier-plugin-typespec": "workspace:~",
     "@typespec/rest": "workspace:~",
     "@typespec/tspd": "workspace:~",
-    "@typespec/versioning": "workspace:~",
     "@typespec/xml": "workspace:~",
     "@vitest/coverage-v8": "^1.6.0",
     "@vitest/ui": "^1.6.0",

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

@@ -30,6 +30,7 @@ import {
 import { isHeader } from "@typespec/http";
 import { buildVersionProjections, getVersions } from "@typespec/versioning";
 import { defaultDecoratorsAllowList } from "./configs.js";
+import { handleClientExamples } from "./example.js";
 import {
   AccessFlags,
   LanguageScopes,
@@ -41,7 +42,13 @@ import {
   SdkServiceOperation,
   UsageFlags,
 } from "./interfaces.js";
-import { AllScopes, TCGCContext, clientNameKey, parseEmitterName } from "./internal-utils.js";
+import {
+  AllScopes,
+  TCGCContext,
+  clientNameKey,
+  getValidApiVersion,
+  parseEmitterName,
+} from "./internal-utils.js";
 import { createStateSymbol, reportDiagnostic } from "./lib.js";
 import { getSdkPackage } from "./package.js";
 import { getLibraryName } from "./public-utils.js";
@@ -230,14 +237,7 @@ function serviceVersioningProjection(context: TCGCContext, client: SdkClient) {
       ?.getVersions()
       .map((x) => x.value);
     if (!allApiVersions) return;
-    let apiVersion = context.apiVersion;
-    if (
-      apiVersion === "latest" ||
-      apiVersion === undefined ||
-      !allApiVersions.includes(apiVersion)
-    ) {
-      apiVersion = allApiVersions[allApiVersions.length - 1];
-    }
+    const apiVersion = getValidApiVersion(context, allApiVersions);
     if (apiVersion === undefined) return;
     const versionProjections = buildVersionProjections(context.program, client.service).filter(
       (v) => apiVersion === v.version
@@ -599,14 +599,14 @@ export interface CreateSdkContextOptions {
   additionalDecorators?: string[];
 }
 
-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");
@@ -631,10 +631,15 @@ export function createSdkContext<
     __namespaceToApiVersionParameter: new Map(),
     __tspTypeToApiVersions: new Map(),
     __namespaceToApiVersionClientDefaultValue: new Map(),
+    examplesDirectory: context.options["examples-directory"],
     decoratorsAllowList: [...defaultDecoratorsAllowList, ...(options?.additionalDecorators ?? [])],
     previewStringRegex: options?.versioning?.previewStringRegex || /-preview$/,
   };
   sdkContext.sdkPackage = getSdkPackage(sdkContext);
+  for (const client of sdkContext.sdkPackage.clients) {
+    diagnostics.pipe(await handleClientExamples(sdkContext, client));
+  }
+
   if (sdkContext.diagnostics) {
     sdkContext.diagnostics = sdkContext.diagnostics.concat(
       sdkContext.sdkPackage.diagnostics // eslint-disable-line deprecation/deprecation