Report creating modules in errors on created modules

Bug: 133172285
Change-Id: I0782c722f5877508691868f96dbf7dc0bed3f9f4

context.go

@@ -173,6 +173,7 @@ type moduleInfo struct {
 	relBlueprintsFile string
 	pos               scanner.Position
 	propertyPos       map[string]scanner.Position
+	createdBy         *moduleInfo
 
 	variantName       string
 	variant           variationMap
@@ -215,6 +216,10 @@ func (module *moduleInfo) String() string {
 	if module.variantName != "" {
 		s += fmt.Sprintf(" variant %q", module.variantName)
 	}
+	if module.createdBy != nil {
+		s += fmt.Sprintf(" (created by %s)", module.createdBy)
+	}
+
 	return s
 }
 
@@ -2151,6 +2156,10 @@ func (c *Context) runMutator(config interface{}, mutator *mutatorInfo,
 				}
 			}
 
+			if module.createdBy != nil && module.createdBy.logicModule == nil {
+				module.createdBy = module.createdBy.splitModules[0]
+			}
+
 			// Add in any new direct dependencies that were added by the mutator
 			module.directDeps = append(module.directDeps, module.newDirectDeps...)
 			module.newDirectDeps = nil

module_ctx.go

@@ -923,6 +923,8 @@ func (mctx *mutatorContext) CreateModule(factory ModuleFactory, props ...interfa
 
 	module.relBlueprintsFile = mctx.module.relBlueprintsFile
 	module.pos = mctx.module.pos
+	module.propertyPos = mctx.module.propertyPos
+	module.createdBy = mctx.module
 
 	for _, p := range props {
 		err := proptools.AppendMatchingProperties(module.properties, p, nil)