snapshot of https://github.com/casbin/casbin.git (master, 2026-09-15; blobs > 131072B omitted)

errors/constraint_errors.go

@@ -0,0 +1,49 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package errors
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Global errors for constraints defined here.
+var (
+	ErrConstraintViolation         = errors.New("constraint violation")
+	ErrConstraintParsingError      = errors.New("constraint parsing error")
+	ErrConstraintRequiresRBAC      = errors.New("constraints require RBAC to be enabled (role_definition section must exist)")
+	ErrInvalidConstraintDefinition = errors.New("invalid constraint definition")
+)
+
+// ConstraintViolationError represents a specific constraint violation.
+type ConstraintViolationError struct {
+	ConstraintName string
+	Message        string
+}
+
+func (e *ConstraintViolationError) Error() string {
+	return fmt.Sprintf("constraint violation [%s]: %s", e.ConstraintName, e.Message)
+}
+
+// NewConstraintViolationError creates a new constraint violation error.
+func NewConstraintViolationError(constraintName, message string) error {
+	return &ConstraintViolationError{
+		ConstraintName: constraintName,
+		Message:        message,
+	}
+}