Divorce disting from androidmk

Change AndroidMkEntries.getDistContributions and
AndroidMkInfo.getDistContributions into a freestanding
getDistContributions.

This enables us to not call the AndroidMk related functions in
soong-only builds.

Bug: 398938465
Test: Diff'd the ninja files from "m nothing dist" before/after this cl, no changes
Change-Id: I2f9d537c0d66f0ae3715f083e2f55436e4c0a59f

1 files changed, 26 insertions, 6 deletions

diff --git a/android/module.go b/android/module.go
index d387c2cf3..c243d7581 100644
--- a/android/module.go
+++ b/android/module.go
@@ -15,6 +15,7 @@
 package android
 
 import (
+	"errors"
 	"fmt"
 	"net/url"
 	"path/filepath"
@@ -1219,6 +1220,13 @@ func (m *ModuleBase) GenerateTaggedDistFiles(ctx BaseModuleContext) TaggedDistFi
 		tag := proptools.StringDefault(dist.Tag, DefaultDistTag)
 
 		distFileForTagFromProvider, err := outputFilesForModuleFromProvider(ctx, m.module, tag)
+
+		// If the module doesn't define output files for the DefaultDistTag, try the files under
+		// the "" tag.
+		if tag == DefaultDistTag && errors.Is(err, ErrUnsupportedOutputTag) {
+			distFileForTagFromProvider, err = outputFilesForModuleFromProvider(ctx, m.module, "")
+		}
+
 		if err != OutputFilesProviderNotSet {
 			if err != nil && tag != DefaultDistTag {
 				ctx.PropertyErrorf("dist.tag", "%s", err.Error())
@@ -2945,14 +2953,12 @@ func outputFilesForModule(ctx PathContext, module Module, tag string) (Paths, er
 // If a module doesn't have the OutputFilesProvider, nil is returned.
 func outputFilesForModuleFromProvider(ctx PathContext, module Module, tag string) (Paths, error) {
 	var outputFiles OutputFilesInfo
-	fromProperty := false
 
 	if mctx, isMctx := ctx.(OutputFilesProviderModuleContext); isMctx {
 		if !mctx.EqualModules(mctx.Module(), module) {
 			outputFiles, _ = OtherModuleProvider(mctx, module, OutputFilesProvider)
 		} else {
 			outputFiles = mctx.GetOutputFiles()
-			fromProperty = true
 		}
 	} else if cta, isCta := ctx.(*singletonContextAdaptor); isCta {
 		outputFiles, _ = OtherModuleProvider(cta, module, OutputFilesProvider)
@@ -2969,10 +2975,8 @@ func outputFilesForModuleFromProvider(ctx PathContext, module Module, tag string
 	} else if taggedOutputFiles, hasTag := outputFiles.TaggedOutputFiles[tag]; hasTag {
 		return taggedOutputFiles, nil
 	} else {
-		if fromProperty {
-			return nil, fmt.Errorf("unsupported tag %q for module getting its own output files", tag)
-		} else {
-			return nil, fmt.Errorf("unsupported module reference tag %q", tag)
+		return nil, UnsupportedOutputTagError{
+			tag: tag,
 		}
 	}
 }
@@ -2991,8 +2995,24 @@ type OutputFilesInfo struct {
 
 var OutputFilesProvider = blueprint.NewProvider[OutputFilesInfo]()
 
+type UnsupportedOutputTagError struct {
+	tag string
+}
+
+func (u UnsupportedOutputTagError) Error() string {
+	return fmt.Sprintf("unsupported output tag %q", u.tag)
+}
+
+func (u UnsupportedOutputTagError) Is(e error) bool {
+	_, ok := e.(UnsupportedOutputTagError)
+	return ok
+}
+
+var _ error = UnsupportedOutputTagError{}
+
 // This is used to mark the case where OutputFilesProvider is not set on some modules.
 var OutputFilesProviderNotSet = fmt.Errorf("No output files from provider")
+var ErrUnsupportedOutputTag = UnsupportedOutputTagError{}
 
 // Modules can implement HostToolProvider and return a valid OptionalPath from HostToolPath() to
 // specify that they can be used as a tool by a genrule module.