Add a method in bp2build to create aliases in another directory
The expected use case for this is to create aliases for stub libraries
in the @api_surfaces repository in build/bazel/api_surfaces.
This restricts the scope to just aliases. If we have a use case for
generating actual Bazel targets in another directory, a workaround could
be to generate the targets in the current directory (via
CreateBazelTargetModule) and aliases to it in the other directory
Test: go test ./bp2build
Change-Id: I6b63d9d018618d447fc7c260a2a94aaa00e57a4d
diff --git a/android/mutator.go b/android/mutator.go
index 4dacb8d..676f8a5 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -268,6 +268,11 @@
// platforms, as dictated by a given bool attribute: the target will not be buildable in
// any platform for which this bool attribute is false.
CreateBazelTargetModuleWithRestrictions(bazel.BazelTargetModuleProperties, CommonAttributes, interface{}, bazel.BoolAttribute)
+
+ // CreateBazelTargetAliasInDir creates an alias definition in `dir` directory.
+ // This function can be used to create alias definitions in a directory that is different
+ // from the directory of the visited Soong module.
+ CreateBazelTargetAliasInDir(dir string, name string, actual bazel.Label)
}
type topDownMutatorContext struct {
@@ -705,6 +710,34 @@
t.createBazelTargetModule(bazelProps, commonAttrs, attrs, enabledProperty)
}
+var (
+ bazelAliasModuleProperties = bazel.BazelTargetModuleProperties{
+ Rule_class: "alias",
+ }
+)
+
+type bazelAliasAttributes struct {
+ Actual *bazel.LabelAttribute
+}
+
+func (t *topDownMutatorContext) CreateBazelTargetAliasInDir(
+ dir string,
+ name string,
+ actual bazel.Label) {
+ mod := t.Module()
+ attrs := &bazelAliasAttributes{
+ Actual: bazel.MakeLabelAttribute(actual.Label),
+ }
+ info := bp2buildInfo{
+ Dir: dir,
+ BazelProps: bazelAliasModuleProperties,
+ CommonAttrs: CommonAttributes{Name: name},
+ ConstraintAttrs: constraintAttributes{},
+ Attrs: attrs,
+ }
+ mod.base().addBp2buildInfo(info)
+}
+
// ApexAvailableTags converts the apex_available property value of an ApexModule
// module and returns it as a list of keyed tags.
func ApexAvailableTags(mod Module) bazel.StringListAttribute {
diff --git a/bp2build/build_conversion.go b/bp2build/build_conversion.go
index ced779c..fde9b69 100644
--- a/bp2build/build_conversion.go
+++ b/bp2build/build_conversion.go
@@ -60,6 +60,15 @@
}
}
+// PackageName returns the package of the Bazel target.
+// Defaults to root of tree.
+func (t BazelTarget) PackageName() string {
+ if t.packageName == "" {
+ return "."
+ }
+ return t.packageName
+}
+
// BazelTargets is a typedef for a slice of BazelTarget objects.
type BazelTargets []BazelTarget
@@ -337,7 +346,10 @@
return
}
- buildFileToTargets[dir] = append(buildFileToTargets[dir], targets...)
+ for _, target := range targets {
+ targetDir := target.PackageName()
+ buildFileToTargets[targetDir] = append(buildFileToTargets[targetDir], target)
+ }
})
if len(errs) > 0 {
@@ -454,7 +466,8 @@
targetName := targetNameWithVariant(ctx, m)
return BazelTarget{
- name: targetName,
+ name: targetName,
+ packageName: ctx.ModuleDir(m),
content: fmt.Sprintf(
soongModuleTargetTemplate,
targetName,