feat: dependencies option for module create

starport/pkg/cosmosanalysis/app/app.go

@@ -0,0 +1,52 @@
+package app
+
+import (
+	"fmt"
+	"go/ast"
+	"go/parser"
+	"go/token"
+)
+
+const (
+	appTypeName = "App"
+)
+
+// CheckKeeper checks for the existence of the keeper with the provided name in the app structure
+func CheckKeeper(appPath, keeperName string) error {
+	fileSet := token.NewFileSet()
+	f, err := parser.ParseFile(fileSet, appPath, nil, 0)
+	if err != nil {
+		return err
+	}
+
+	// Inspect the file for app struct
+	var found bool
+	ast.Inspect(f, func(n ast.Node) bool {
+		// look for struct methods.
+		appType, ok := n.(*ast.TypeSpec)
+		if !ok || appType.Name.Name != appTypeName {
+			return true
+		}
+
+		appStruct, ok := appType.Type.(*ast.StructType)
+		if !ok {
+			return true
+		}
+
+		// Search for the keeper specific field
+		for _, field := range appStruct.Fields.List {
+			for _, fieldName := range field.Names {
+				if fieldName.Name == keeperName {
+					found = true
+				}
+			}
+		}
+
+		return false
+	})
+
+	if !found {
+		return fmt.Errorf("app doesn't contain %s", keeperName)
+	}
+	return nil
+}