wire: avoid making variable names that are Go reserved keywords (google/go-cloud#486)

internal/wire/testdata/ReservedKeywords/foo/foo.go

@@ -0,0 +1,35 @@
+// Copyright 2018 The Go Cloud Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License 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 main
+
+import (
+	"fmt"
+)
+
+func main() {
+	i := injectInterface()
+	fmt.Println(i)
+}
+
+type Interface int
+type Select int
+
+func provideInterface(s Select) Interface {
+	return Interface(int(s) + 1)
+}
+
+func provideSelect() Select {
+	return Select(41)
+}

internal/wire/testdata/ReservedKeywords/foo/wire.go

@@ -0,0 +1,32 @@
+// Copyright 2018 The Go Cloud Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License 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.
+
+//+build wireinject
+
+package main
+
+import (
+	"github.com/google/go-cloud/wire"
+)
+
+// Wire tries to disambiguate the variable "select" by prepending
+// the package name; this package-scoped variable conflicts with that
+// and forces a different name.
+var mainSelect = 0
+
+func injectInterface() Interface {
+	// interface and select are Go reserved words, so
+	// Wire should avoid using them as variable names.
+	panic(wire.Build(provideInterface, provideSelect))
+}

internal/wire/testdata/ReservedKeywords/pkg

@@ -0,0 +1 @@
+example.com/foo

internal/wire/testdata/ReservedKeywords/want/program_out.txt

@@ -0,0 +1 @@
+42

internal/wire/testdata/ReservedKeywords/want/wire_gen.go

@@ -0,0 +1,18 @@
+// Code generated by Wire. DO NOT EDIT.
+
+//go:generate wire
+//+build !wireinject
+
+package main
+
+// Injectors from wire.go:
+
+func injectInterface() Interface {
+	select2 := provideSelect()
+	mainInterface := provideInterface(select2)
+	return mainInterface
+}
+
+// wire.go:
+
+var mainSelect = 0