mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 18:12:46 +00:00
51 lines
973 B
Go
51 lines
973 B
Go
package errors
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// WithValue wraps err to store given key-value pair, accessible via Value() function.
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func WithValue(err error, key any, value any) error {
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if err == nil {
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panic("nil error")
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}
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var kvs []kv
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if e := AsV2[*errWithValues](err); e != nil {
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kvs = e.kvs
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}
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return &errWithValues{
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err: err,
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kvs: append(kvs, kv{key, value}),
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}
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}
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// Value searches for value stored under given key in error chain.
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func Value(err error, key any) any {
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if e := AsV2[*errWithValues](err); e != nil {
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return e.Value(key)
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}
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return nil
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}
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// simple key-value type.
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type kv struct{ k, v any }
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// errWithValues wraps an error to provide key-value storage.
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type errWithValues struct {
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err error
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kvs []kv
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}
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func (e *errWithValues) Error() string {
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return e.err.Error()
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}
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func (e *errWithValues) Unwrap() error {
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return e.err
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}
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func (e *errWithValues) Value(key any) any {
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for i := range e.kvs {
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if e.kvs[i].k == key {
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return e.kvs[i].v
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}
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}
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return nil
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}
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