feat: one-to-many, belongs-to

relationsCheck/checkOneToMany.go

@@ -0,0 +1,42 @@
+package relationsCheck
+
+import (
+	"fmt"
+	"go/types"
+	"golang.org/x/tools/go/analysis"
+	"gormlint/common"
+)
+
+func findBackReferenceInOneToMany(model common.Model, relatedModel common.Model) *common.Field {
+	for _, field := range relatedModel.Fields {
+		if !common.IsSlice(field.Type) {
+			continue
+		}
+		if field.Tags.HasParam("many2many") {
+			continue
+		}
+		baseType := common.ResolveBaseType(field.Type)
+		if baseType == nil {
+			continue
+		}
+		if *baseType == model.Name {
+			return &field
+		}
+	}
+	return nil
+}
+
+func isOneToMany(pass *analysis.Pass, model common.Model, relatedModel common.Model) bool {
+	backReference := findBackReferenceInOneToMany(model, relatedModel)
+	if backReference == nil {
+		return false
+	}
+	fmt.Println("Found back reference")
+	fmt.Printf("Backref type: %s\n", types.ExprString(backReference.Type))
+	fmt.Printf("Model: %s\n", model.Name)
+	fmt.Printf("Related model: %s\n", relatedModel.Name)
+	if checkManyToOne(pass, *backReference, relatedModel, model) {
+		return false
+	}
+	return true
+}