encoding/gocode: add Go code generator
Also:
- add gocodec used by generator
- added ability to create temporary Runtime (for concurrency)
- removed index freezing
The latter was only for precondition checking of
internal code. At the same time, freezing could
lead to spurious races if Runtime is used
concurrently.
Note:
- gocodec is a separate package as it is useful
on its own and that way it can be used without
pulling all the dependencies of gocode.
Change-Id: Ib59b65084038b616c9fb725cbe152a56b8869416
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/2742
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
diff --git a/encoding/gocode/generator_test.go b/encoding/gocode/generator_test.go
new file mode 100644
index 0000000..70e0aa8
--- /dev/null
+++ b/encoding/gocode/generator_test.go
@@ -0,0 +1,84 @@
+// Copyright 2019 CUE 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
+//
+// http://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 gocode
+
+import (
+ "bytes"
+ "flag"
+ "io/ioutil"
+ "os"
+ "path/filepath"
+ "regexp"
+ "testing"
+
+ "cuelang.org/go/cue"
+ "cuelang.org/go/cue/errors"
+ "cuelang.org/go/cue/load"
+)
+
+var update = flag.Bool("update", false, "update test files")
+
+func TestGenerate(t *testing.T) {
+ dirs, err := ioutil.ReadDir("testdata")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ cwd, err := os.Getwd()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ for _, d := range dirs {
+ if !d.IsDir() {
+ continue
+ }
+ t.Run(d.Name(), func(t *testing.T) {
+ dir := filepath.Join(cwd, "testdata")
+ pkg := "." + string(filepath.Separator) + d.Name()
+ inst := cue.Build(load.Instances([]string{pkg}, &load.Config{
+ Dir: dir,
+ ModuleRoot: dir,
+ Module: "cuelang.org/go/encoding/gocode/testdata",
+ }))[0]
+ if err := inst.Err; err != nil {
+ t.Fatal(err)
+ }
+
+ goPkg := "./testdata/" + d.Name()
+ b, err := Generate(goPkg, inst, nil)
+ if err != nil {
+ t.Fatal(errStr(err))
+ }
+ // t.Log(string(b))
+
+ goFile := filepath.Join("testdata", d.Name(), "cue_gen.go")
+ if *update {
+ _ = ioutil.WriteFile(goFile, b, 0644)
+ return
+ }
+ })
+ }
+}
+
+func errStr(err error) string {
+ if err == nil {
+ return "nil"
+ }
+ buf := &bytes.Buffer{}
+ errors.Print(buf, err, nil)
+ r := regexp.MustCompile(`.cue:\d+:\d+`)
+ return r.ReplaceAllString(buf.String(), ".cue:x:x")
+}
