terraform-provider-google/vendor/github.com/hashicorp/go-multierror/append.go
Paddy 961c878e0d Switch to using Go modules. (#2679)
Switch to using Go modules.

This migrates our vendor.json to use Go 1.11's modules system, and
replaces the vendor folder with the output of go mod vendor.

The vendored code should remain basically the same; I believe some
tree shaking of packages and support scripts/licenses/READMEs/etc.
happened.

This also fixes Travis and our Makefile to no longer use govendor.
2018-12-20 17:22:22 -08:00

42 lines
962 B
Go

package multierror
// Append is a helper function that will append more errors
// onto an Error in order to create a larger multi-error.
//
// If err is not a multierror.Error, then it will be turned into
// one. If any of the errs are multierr.Error, they will be flattened
// one level into err.
func Append(err error, errs ...error) *Error {
switch err := err.(type) {
case *Error:
// Typed nils can reach here, so initialize if we are nil
if err == nil {
err = new(Error)
}
// Go through each error and flatten
for _, e := range errs {
switch e := e.(type) {
case *Error:
if e != nil {
err.Errors = append(err.Errors, e.Errors...)
}
default:
if e != nil {
err.Errors = append(err.Errors, e)
}
}
}
return err
default:
newErrs := make([]error, 0, len(errs)+1)
if err != nil {
newErrs = append(newErrs, err)
}
newErrs = append(newErrs, errs...)
return Append(&Error{}, newErrs...)
}
}