protoc-gen-twirp: use camel case for Go type name of proto msg (#146)

* protoc-gen-twirp: use camel case when parsing proto msg name

* update license dates to 2019

* fix the same bug for nested messages

internal/twirptest/snake_case_names/compile_test.go

@@ -0,0 +1,20 @@
+// Copyright 2019 Twitch Interactive, Inc.  All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"). You may not
+// use this file except in compliance with the License. A copy of the License is
+// located at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// or in the "license" file accompanying this file. This file is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+// express or implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+package snake_case_names
+
+import "testing"
+
+func TestCompilation(t *testing.T) {
+	// Test passes if this package compiles
+}

internal/twirptest/snake_case_names/gen.go

@@ -0,0 +1,16 @@
+// Copyright 2019 Twitch Interactive, Inc.  All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"). You may not
+// use this file except in compliance with the License. A copy of the License is
+// located at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// or in the "license" file accompanying this file. This file is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+// express or implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+package snake_case_names
+
+//go:generate ../../protoc_gen.sh snake_case_names.proto

internal/twirptest/snake_case_names/snake_case_names.proto

@@ -0,0 +1,23 @@
+syntax = "proto3";
+
+// Test that protoc-gen-twirp follows the same behavior as protoc-gen-go
+// for converting RPCs and message names from snake case to camel case.
+package twirp.internal.twirptest.snake_case_names;
+option go_package = "snake_case_names";
+
+message MakeHatArgs_v1 {
+    message Hat_v1 {
+      int32 size = 1;
+      string color = 2;
+      string name = 3;
+    }
+
+    message Size_v1 {
+      int32 inches = 1;
+    }
+}
+
+// A Haberdasher makes hats for clients.
+service Haberdasher {
+  rpc MakeHat_v1 (MakeHatArgs_v1.Size_v1) returns (MakeHatArgs_v1.Hat_v1);
+}