//
//  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
//
//  Licensed 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 pipeline

import "errors"

var (
	errNilDSL           = errors.New("pipeline: nil DSL")
	errEmptyStages      = errors.New("pipeline: DSL has no components")
	errUnknownComponent = errors.New("pipeline: unknown component")
	errUnknownStage     = errors.New("pipeline: unknown stage")
)

type stageError struct {
	Stage  string
	Reason string
}

func (e *stageError) Error() string {
	return "pipeline: stage " + e.Stage + ": " + e.Reason
}

type sinkError struct {
	Reason string
}

func (e *sinkError) Error() string {
	return "pipeline: sink: " + e.Reason
}