35 lines
891 B
Go
35 lines
891 B
Go
// Package configdiag carries value-free field diagnostics between framework
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// modules without making them depend on the application's config package.
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package configdiag
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import "errors"
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type Error struct {
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Field, Reason string
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cause error
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}
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func (e *Error) Error() string { return e.Field + ": " + e.Reason }
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func (e *Error) Unwrap() error { return e.cause }
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func New(field, reason string) error { return &Error{Field: field, Reason: reason} }
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func Wrap(field, reason string, cause error) error {
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return &Error{Field: field, Reason: reason, cause: cause}
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}
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func At(prefix string, err error) error {
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if err == nil {
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return nil
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}
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var d *Error
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if errors.As(err, &d) {
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field := prefix
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if d.Field != "" {
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if field != "" {
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field += "."
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}
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field += d.Field
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}
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return Wrap(field, d.Reason, err)
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}
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return Wrap(prefix, "validation failed", err)
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}
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