diff options
Diffstat (limited to 'src/encoding/json/decode.go')
| -rw-r--r-- | src/encoding/json/decode.go | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/encoding/json/decode.go b/src/encoding/json/decode.go index 86d8a69db7..1b006ffb17 100644 --- a/src/encoding/json/decode.go +++ b/src/encoding/json/decode.go @@ -136,6 +136,12 @@ func (e *UnmarshalTypeError) Error() string { return "json: cannot unmarshal " + e.Value + " into Go value of type " + e.Type.String() } +// Is returns true if target is a UnmarshalTypeError. +func (e *UnmarshalTypeError) Is(target error) bool { + _, ok := target.(*UnmarshalTypeError) + return ok +} + // An UnmarshalFieldError describes a JSON object key that // led to an unexported (and therefore unwritable) struct field. // @@ -150,12 +156,24 @@ func (e *UnmarshalFieldError) Error() string { return "json: cannot unmarshal object key " + strconv.Quote(e.Key) + " into unexported field " + e.Field.Name + " of type " + e.Type.String() } +// Is returns true if target is a UnmarshalFieldError. +func (e *UnmarshalFieldError) Is(target error) bool { + _, ok := target.(*UnmarshalFieldError) + return ok +} + // An InvalidUnmarshalError describes an invalid argument passed to Unmarshal. // (The argument to Unmarshal must be a non-nil pointer.) type InvalidUnmarshalError struct { Type reflect.Type } +// Is returns true if target is a InvalidUnmarshalError. +func (e *InvalidUnmarshalError) Is(target error) bool { + _, ok := target.(*InvalidUnmarshalError) + return ok +} + func (e *InvalidUnmarshalError) Error() string { if e.Type == nil { return "json: Unmarshal(nil)" |