fix: update generator to generate location mixin separately

typescript/src/schema/api.ts

@@ -50,7 +50,6 @@ export class API {
     return (
       fd.package === 'google.longrunning' ||
       fd.package === 'google.cloud' ||
-      fd.package === 'google.cloud.location' ||
       fd.package === 'google.protobuf' ||
       fd.package === 'google.type' ||
       fd.package === 'google.rpc' ||
@@ -63,7 +62,8 @@ export class API {
     fds: protos.google.protobuf.IFileDescriptorProto[]
   ) {
     let filteredProtos = fds.filter(fd => !API.isIgnoredService(fd));
-    // Special case: google.iam.v1 can be either a separate service to generate,
+    // Special cases: google.iam.v1 or google.cloud.location
+    // can be either a separate service to generate,
     // or a dependency that should be ignored here
     const packages = filteredProtos.reduce((set, fd) => {
       set.add(fd.package!);
@@ -74,6 +74,11 @@ export class API {
         p => p.package !== 'google.iam.v1'
       );
     }
+    if (packages.size > 1 && packages.has('google.cloud.location')) {
+      filteredProtos = filteredProtos.filter(
+        p => p.package !== 'google.cloud.location'
+      );
+    }
     return filteredProtos;
   }
 

typescript/src/schema/naming.ts

@@ -75,7 +75,8 @@ export class Naming {
     const versionIndex = segments.findIndex(segment =>
       segment.match(versionPattern)
     );
-    if (versionIndex === -1) {
+    // Special exception for location, which does not have a version
+    if (versionIndex === -1 && rootPackage !== 'google.cloud.location') {
       throw new Error(
         `ERROR: Cannot parse package name ${rootPackage}: version does not match ${versionPattern}.`
       );
@@ -88,7 +89,8 @@ export class Naming {
         `ERROR: Cannot parse package name ${rootPackage}: version ${version} is the first segment in the name.`
       );
     }
-    const name = segments[versionIndex - 1];
+    // If there is no version (in the case of location), just grab the last segment
+    const name = segments[versionIndex - 1] || segments[segments.length - 1];
 
     // everything before the name is namespace
     const namespaces = segments.slice(0, versionIndex - 1).join('.');

typescript/test/unit/api.ts

@@ -91,6 +91,23 @@ describe('src/schema/api.ts', () => {
     ]);
   });
 
+  it('should be able to generate google.cloud.location alone', () => {
+    const fd = {} as protos.google.protobuf.FileDescriptorProto;
+    fd.name = 'google/cloud/location/location.proto';
+    fd.package = 'google.cloud.location';
+    fd.service = [{} as protos.google.protobuf.ServiceDescriptorProto];
+    fd.service[0].name = 'IAMPolicy';
+    fd.service[0].options = {
+      '.google.api.defaultHost': 'cloud.googleapis.com',
+    };
+    const api = new API([fd], 'google.cloud.location', {
+      grpcServiceConfig: {} as protos.grpc.service_config.ServiceConfig,
+    });
+    assert.deepStrictEqual(api.filesToGenerate, [
+      'google/cloud/location/location.proto',
+    ]);
+  });
+
   it('should not return common protos in the proto list', () => {
     const fd1 = {} as protos.google.protobuf.FileDescriptorProto;
     fd1.name = 'google/cloud/test/v1/test.proto';