Add VisitDirectDepsWithTag

Add a method on ModuleContext and TopDownMutatorContext to visit
direct dependencies that have a given dependency tag.

Test: m checkbuild
Change-Id: Ib875563091dcae6b7282b3e3427d0eb07d8c8af5

3 files changed, 27 insertions, 7 deletions

diff --git a/android/module.go b/android/module.go
index cb068abb..0fb94796 100644
--- a/android/module.go
+++ b/android/module.go
@@ -139,6 +139,7 @@ type ModuleContext interface {
 
 	VisitDirectDepsBlueprint(visit func(blueprint.Module))
 	VisitDirectDeps(visit func(Module))
+	VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module))
 	VisitDirectDepsIf(pred func(Module) bool, visit func(Module))
 	VisitDepsDepthFirst(visit func(Module))
 	VisitDepsDepthFirstIf(pred func(Module) bool, visit func(Module))
@@ -831,6 +832,16 @@ func (a *androidModuleContext) VisitDirectDeps(visit func(Module)) {
 	})
 }
 
+func (a *androidModuleContext) VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module)) {
+	a.ModuleContext.VisitDirectDeps(func(module blueprint.Module) {
+		if aModule := a.validateAndroidModule(module); aModule != nil {
+			if a.ModuleContext.OtherModuleDependencyTag(aModule) == tag {
+				visit(aModule)
+			}
+		}
+	})
+}
+
 func (a *androidModuleContext) VisitDirectDepsIf(pred func(Module) bool, visit func(Module)) {
 	a.ModuleContext.VisitDirectDepsIf(
 		// pred
diff --git a/android/mutator.go b/android/mutator.go
index 8de57e1b..2f13f6ca 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -127,6 +127,7 @@ type TopDownMutatorContext interface {
 	GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag)
 
 	VisitDirectDeps(visit func(Module))
+	VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module))
 	VisitDirectDepsIf(pred func(Module) bool, visit func(Module))
 	VisitDepsDepthFirst(visit func(Module))
 	VisitDepsDepthFirstIf(pred func(Module) bool, visit func(Module))
@@ -230,6 +231,16 @@ func (a *androidTopDownMutatorContext) VisitDirectDeps(visit func(Module)) {
 	})
 }
 
+func (a *androidTopDownMutatorContext) VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module)) {
+	a.TopDownMutatorContext.VisitDirectDeps(func(module blueprint.Module) {
+		if aModule, _ := module.(Module); aModule != nil {
+			if a.TopDownMutatorContext.OtherModuleDependencyTag(aModule) == tag {
+				visit(aModule)
+			}
+		}
+	})
+}
+
 func (a *androidTopDownMutatorContext) VisitDirectDepsIf(pred func(Module) bool, visit func(Module)) {
 	a.TopDownMutatorContext.VisitDirectDepsIf(
 		// pred
diff --git a/android/prebuilt.go b/android/prebuilt.go
index d3f97041..9356aabb 100644
--- a/android/prebuilt.go
+++ b/android/prebuilt.go
@@ -109,13 +109,11 @@ func PrebuiltSelectModuleMutator(ctx TopDownMutatorContext) {
 			p.properties.UsePrebuilt = p.usePrebuilt(ctx, nil)
 		}
 	} else if s, ok := ctx.Module().(Module); ok {
-		ctx.VisitDirectDeps(func(m Module) {
-			if ctx.OtherModuleDependencyTag(m) == prebuiltDepTag {
-				p := m.(PrebuiltInterface).Prebuilt()
-				if p.usePrebuilt(ctx, s) {
-					p.properties.UsePrebuilt = true
-					s.SkipInstall()
-				}
+		ctx.VisitDirectDepsWithTag(prebuiltDepTag, func(m Module) {
+			p := m.(PrebuiltInterface).Prebuilt()
+			if p.usePrebuilt(ctx, s) {
+				p.properties.UsePrebuilt = true
+				s.SkipInstall()
 			}
 		})
 	}