Make GetDirectDep implementation match comment
The comment on the interface of GetDirectDep states if there are
multiple deps with different tags, the first will be returned; however,
the current behavior is to panic if there are multiple deps. The
behavior now:
* a single dep, return the module and tag
* a single module with different tags: return module with first tag
* multiple modules: panic
* no module: return nil, nil
Bug: 186488405
Test: ~/aosp/build/bazel/ci/bp2build.sh
Test: m nothing
Change-Id: Id1e7315e7874b4a683ad7357ed2793822315821f
diff --git a/android/module.go b/android/module.go
index 9f923e2..fdb5290 100644
--- a/android/module.go
+++ b/android/module.go
@@ -213,7 +213,7 @@
// GetDirectDep returns the Module and DependencyTag for the direct dependency with the specified
// name, or nil if none exists. If there are multiple dependencies on the same module it returns
- // the first DependencyTag. It skips any dependencies that are not an android.Module.
+ // the first DependencyTag.
GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag)
// VisitDirectDepsBlueprint calls visit for each direct dependency. If there are multiple
@@ -2244,11 +2244,12 @@
return aModule
}
-func (b *baseModuleContext) getDirectDepInternal(name string, tag blueprint.DependencyTag) (blueprint.Module, blueprint.DependencyTag) {
- type dep struct {
- mod blueprint.Module
- tag blueprint.DependencyTag
- }
+type dep struct {
+ mod blueprint.Module
+ tag blueprint.DependencyTag
+}
+
+func (b *baseModuleContext) getDirectDepsInternal(name string, tag blueprint.DependencyTag) []dep {
var deps []dep
b.VisitDirectDepsBlueprint(func(module blueprint.Module) {
if aModule, _ := module.(Module); aModule != nil {
@@ -2265,6 +2266,11 @@
}
}
})
+ return deps
+}
+
+func (b *baseModuleContext) getDirectDepInternal(name string, tag blueprint.DependencyTag) (blueprint.Module, blueprint.DependencyTag) {
+ deps := b.getDirectDepsInternal(name, tag)
if len(deps) == 1 {
return deps[0].mod, deps[0].tag
} else if len(deps) >= 2 {
@@ -2275,6 +2281,25 @@
}
}
+func (b *baseModuleContext) getDirectDepFirstTag(name string) (blueprint.Module, blueprint.DependencyTag) {
+ foundDeps := b.getDirectDepsInternal(name, nil)
+ deps := map[blueprint.Module]bool{}
+ for _, dep := range foundDeps {
+ deps[dep.mod] = true
+ }
+ if len(deps) == 1 {
+ return foundDeps[0].mod, foundDeps[0].tag
+ } else if len(deps) >= 2 {
+ // this could happen if two dependencies have the same name in different namespaces
+ // TODO(b/186554727): this should not occur if namespaces are handled within
+ // getDirectDepsInternal.
+ panic(fmt.Errorf("Multiple dependencies having same BaseModuleName() %q found from %q",
+ name, b.ModuleName()))
+ } else {
+ return nil, nil
+ }
+}
+
func (b *baseModuleContext) GetDirectDepsWithTag(tag blueprint.DependencyTag) []Module {
var deps []Module
b.VisitDirectDepsBlueprint(func(module blueprint.Module) {
@@ -2292,8 +2317,11 @@
return module
}
+// GetDirectDep returns the Module and DependencyTag for the direct dependency with the specified
+// name, or nil if none exists. If there are multiple dependencies on the same module it returns the
+// first DependencyTag.
func (b *baseModuleContext) GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag) {
- return b.getDirectDepInternal(name, nil)
+ return b.getDirectDepFirstTag(name)
}
func (b *baseModuleContext) VisitDirectDepsBlueprint(visit func(blueprint.Module)) {