Add a way to remove duplicates from Bazel label lists, to e.g. avoid duplicate deps.
Test: Added unit tests, and also resolves bp2build error.
Change-Id: I6e01d9e233ec21dbb244e5682cbeebbc3a1ac0c4
diff --git a/bazel/Android.bp b/bazel/Android.bp
index 117fd46..b7c185a 100644
--- a/bazel/Android.bp
+++ b/bazel/Android.bp
@@ -12,6 +12,7 @@
],
testSrcs: [
"aquery_test.go",
+ "properties_test.go",
],
pluginFor: [
"soong_build",
diff --git a/bazel/properties.go b/bazel/properties.go
index a5ffa55..cb47758 100644
--- a/bazel/properties.go
+++ b/bazel/properties.go
@@ -14,7 +14,10 @@
package bazel
-import "fmt"
+import (
+ "fmt"
+ "sort"
+)
type bazelModuleProperties struct {
// The label of the Bazel target replacing this Soong module.
@@ -66,6 +69,28 @@
}
}
+func UniqueBazelLabels(originalLabels []Label) []Label {
+ uniqueLabelsSet := make(map[Label]bool)
+ for _, l := range originalLabels {
+ uniqueLabelsSet[l] = true
+ }
+ var uniqueLabels []Label
+ for l, _ := range uniqueLabelsSet {
+ uniqueLabels = append(uniqueLabels, l)
+ }
+ sort.SliceStable(uniqueLabels, func(i, j int) bool {
+ return uniqueLabels[i].Label < uniqueLabels[j].Label
+ })
+ return uniqueLabels
+}
+
+func UniqueBazelLabelList(originalLabelList LabelList) LabelList {
+ var uniqueLabelList LabelList
+ uniqueLabelList.Includes = UniqueBazelLabels(originalLabelList.Includes)
+ uniqueLabelList.Excludes = UniqueBazelLabels(originalLabelList.Excludes)
+ return uniqueLabelList
+}
+
// StringListAttribute corresponds to the string_list Bazel attribute type with
// support for additional metadata, like configurations.
type StringListAttribute struct {
diff --git a/bazel/properties_test.go b/bazel/properties_test.go
new file mode 100644
index 0000000..0fcb904
--- /dev/null
+++ b/bazel/properties_test.go
@@ -0,0 +1,89 @@
+// Copyright 2021 Google 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.
+// 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 bazel
+
+import (
+ "reflect"
+ "testing"
+)
+
+func TestUniqueBazelLabels(t *testing.T) {
+ testCases := []struct {
+ originalLabels []Label
+ expectedUniqueLabels []Label
+ }{
+ {
+ originalLabels: []Label{
+ {Label: "a"},
+ {Label: "b"},
+ {Label: "a"},
+ {Label: "c"},
+ },
+ expectedUniqueLabels: []Label{
+ {Label: "a"},
+ {Label: "b"},
+ {Label: "c"},
+ },
+ },
+ }
+ for _, tc := range testCases {
+ actualUniqueLabels := UniqueBazelLabels(tc.originalLabels)
+ if !reflect.DeepEqual(tc.expectedUniqueLabels, actualUniqueLabels) {
+ t.Fatalf("Expected %v, got %v", tc.expectedUniqueLabels, actualUniqueLabels)
+ }
+ }
+}
+
+func TestUniqueBazelLabelList(t *testing.T) {
+ testCases := []struct {
+ originalLabelList LabelList
+ expectedUniqueLabelList LabelList
+ }{
+ {
+ originalLabelList: LabelList{
+ Includes: []Label{
+ {Label: "a"},
+ {Label: "b"},
+ {Label: "a"},
+ {Label: "c"},
+ },
+ Excludes: []Label{
+ {Label: "x"},
+ {Label: "x"},
+ {Label: "y"},
+ {Label: "z"},
+ },
+ },
+ expectedUniqueLabelList: LabelList{
+ Includes: []Label{
+ {Label: "a"},
+ {Label: "b"},
+ {Label: "c"},
+ },
+ Excludes: []Label{
+ {Label: "x"},
+ {Label: "y"},
+ {Label: "z"},
+ },
+ },
+ },
+ }
+ for _, tc := range testCases {
+ actualUniqueLabelList := UniqueBazelLabelList(tc.originalLabelList)
+ if !reflect.DeepEqual(tc.expectedUniqueLabelList, actualUniqueLabelList) {
+ t.Fatalf("Expected %v, got %v", tc.expectedUniqueLabelList, actualUniqueLabelList)
+ }
+ }
+}