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derrors.go (645B)

      1 // Copyright 2021 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 // Package derrors defines internal error values to categorize the different
      6 // types error semantics supported by x/vuln.
      7 package derrors
      8 
      9 import (
     10 	"fmt"
     11 )
     12 
     13 // Wrap adds context to the error and allows
     14 // unwrapping the result to recover the original error.
     15 //
     16 // Example:
     17 //
     18 //	defer derrors.Wrap(&err, "copy(%s, %s)", dst, src)
     19 func Wrap(errp *error, format string, args ...interface{}) {
     20 	if *errp != nil {
     21 		*errp = fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), *errp)
     22 	}
     23 }