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// Copyright 2019 The SwiftShader 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 cause provides functions for building wrapped errors.
package cause
import (
"fmt"
"strings"
)
// Wrap returns a new error wrapping cause with the additional message.
func Wrap(cause error, msg string, args ...interface{}) error {
s := fmt.Sprintf(msg, args...)
return fmt.Errorf("%v. Cause: %w", s, cause)
}
// Merge merges all the errors into a single newline delimited error.
func Merge(errs ...error) error {
if len(errs) == 0 {
return nil
}
strs := make([]string, len(errs))
for i, err := range errs {
strs[i] = err.Error()
}
return fmt.Errorf("%v", strings.Join(strs, "\n"))
}