fix: wrongly shared schema by fields

parser.go

@@ -964,8 +964,13 @@ func (parser *Parser) getTypeSchema(typeName string, file *ast.File, ref bool) (
 		}
 	}
 
-	if ref && (len(schema.Schema.Type) > 0 && schema.Schema.Type[0] == OBJECT || len(schema.Enum) > 0) {
-		return parser.getRefTypeSchema(typeSpecDef, schema), nil
+	if ref {
+		if IsComplexSchema(schema.Schema) {
+			return parser.getRefTypeSchema(typeSpecDef, schema), nil
+		}
+		// if it is a simple schema, just return a copy
+		newSchema := *schema.Schema
+		return &newSchema, nil
 	}
 
 	return schema.Schema, nil

schema.go

@@ -135,6 +135,27 @@ func ignoreNameOverride(name string) bool {
 	return len(name) != 0 && name[0] == IgnoreNameOverridePrefix
 }
 
+// IsComplexSchema whether a schema is complex and should be a ref schema
+func IsComplexSchema(schema *spec.Schema) bool {
+	// a enum type should be complex
+	if len(schema.Enum) > 0 {
+		return true
+	}
+
+	// a deep array type is complex, how to determine deep? here more than 2 ,for example: [][]object,[][][]int
+	if len(schema.Type) > 2 {
+		return true
+	}
+
+	//Object included, such as Object or []Object
+	for _, st := range schema.Type {
+		if st == OBJECT {
+			return true
+		}
+	}
+	return false
+}
+
 // RefSchema build a reference schema.
 func RefSchema(refType string) *spec.Schema {
 	return spec.RefSchema("#/definitions/" + refType)