Function generateRpcTypes

java/scripts/codegen/java.ts:1311–1428

(schemaPath: string)

}

async function generateRpcTypes(schemaPath: string): Promise<void> {
    console.log("\n🔌 Generating RPC types...");
    const schemaContent = await fs.readFile(schemaPath, "utf-8");
    const schema = normalizeSchemaBrandCasing(JSON.parse(schemaContent)) as Record<string, unknown> & {
        server?: Record<string, unknown>;
        session?: Record<string, unknown>;
        clientSession?: Record<string, unknown>;
        clientGlobal?: Record<string, unknown>;
        definitions?: Record<string, JSONSchema7>;
    };

    // Set module-level definitions for $ref resolution
    currentDefinitions = (schema.definitions ?? {}) as Record<string, JSONSchema7>;
    pendingStandaloneTypes.clear();
    crossSchemaDefinitions.clear();

    // Load cross-schema definitions (session-events) so that cross-schema $ref values
    // like "session-events.schema.json#/definitions/Foo" can be resolved.
    try {
        const sessionEventsSchemaPath = await getSessionEventsSchemaPath();
        const sessionEventsContent = await fs.readFile(sessionEventsSchemaPath, "utf-8");
        const sessionEventsSchema = normalizeSchemaBrandCasing(JSON.parse(sessionEventsContent) as JSONSchema7);
        crossSchemaDefinitions.set("session-events.schema.json",
            (sessionEventsSchema.definitions ?? {}) as Record<string, JSONSchema7>);
    } catch (e) {
        console.warn(`[codegen] Could not load session-events schema for cross-ref resolution: ${e}`);
    }

    const packageName = "com.github.copilot.generated.rpc";
    const packageDir = `src/generated/java/com/github/copilot/generated/rpc`;

    // Collect all RPC methods from all sections
    const sections: [string, Record<string, unknown>][] = [];
    if (schema.server) sections.push(["server", schema.server]);
    if (schema.session) sections.push(["session", schema.session]);
    if (schema.clientSession) sections.push(["clientSession", schema.clientSession]);
    if (schema.clientGlobal) sections.push(["clientGlobal", schema.clientGlobal]);

    const generatedClasses = new Map<string, boolean>();
    const allFiles: string[] = [];

    for (const [sectionName, sectionNode] of sections) {
        const methods = collectRpcMethods(sectionNode);
        for (const [, method] of methods) {
            const className = rpcMethodToClassName(method.rpcMethod);

            // Generate params class — resolve $ref if params is a reference
            let paramsSchema = method.params as JSONSchema7 | null;
            const paramsRefName = extractRefName(paramsSchema);
            if (paramsRefName && sectionName === "clientGlobal") {
                const resolvedParamsSchema = resolveRef(paramsSchema ?? undefined);
                if (resolvedParamsSchema?.type === "object" && resolvedParamsSchema.properties) {
                    pendingStandaloneTypes.set(paramsRefName, resolvedParamsSchema);
                }
                paramsSchema = null;
            } else if (paramsSchema?.$ref) {
                paramsSchema = resolveRef(paramsSchema) as JSONSchema7;
            }