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encoding/json: simplify encodeState.{string, stringBytes}

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As correctly mentioned in #11883, encodeState.string and
encodeState.stringBytes never return an error.
This CL removes the error from the function signatures and somewhat
simplifies call sites.

Fixes #11883

Change-Id: I1d1853d09631c545b68b5eea86ff7daa2e0ca10b
Reviewed-on: https://go-review.googlesource.com/15836
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Nodir Turakulov 2015-10-14 15:18:10 -07:00 committed by Brad Fitzpatrick
parent 20736fcab9
commit 07314714c0
2 changed files with 8 additions and 18 deletions
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16
src/encoding/json/encode.go
View File

@ -448,12 +448,10 @@ func textMarshalerEncoder(e *encodeState, v reflect.Value, quoted bool) {
}
m := v.Interface().(encoding.TextMarshaler)
b, err := m.MarshalText()
if err == nil {
_, err = e.stringBytes(b)
}
if err != nil {
e.error(&MarshalerError{v.Type(), err})
}
e.stringBytes(b)
}
func addrTextMarshalerEncoder(e *encodeState, v reflect.Value, quoted bool) {
@ -464,12 +462,10 @@ func addrTextMarshalerEncoder(e *encodeState, v reflect.Value, quoted bool) {
}
m := va.Interface().(encoding.TextMarshaler)
b, err := m.MarshalText()
if err == nil {
_, err = e.stringBytes(b)
}
if err != nil {
e.error(&MarshalerError{v.Type(), err})
}
e.stringBytes(b)
}
func boolEncoder(e *encodeState, v reflect.Value, quoted bool) {
@ -783,7 +779,7 @@ func (sv stringValues) Less(i, j int) bool { return sv.get(i) < sv.get(j) }
func (sv stringValues) get(i int) string { return sv[i].String() }
// NOTE: keep in sync with stringBytes below.
func (e *encodeState) string(s string) (int, error) {
func (e *encodeState) string(s string) int {
len0 := e.Len()
e.WriteByte('"')
start := 0
@ -855,11 +851,11 @@ func (e *encodeState) string(s string) (int, error) {
e.WriteString(s[start:])
}
e.WriteByte('"')
return e.Len() - len0, nil
return e.Len() - len0
}
// NOTE: keep in sync with string above.
func (e *encodeState) stringBytes(s []byte) (int, error) {
func (e *encodeState) stringBytes(s []byte) int {
len0 := e.Len()
e.WriteByte('"')
start := 0
@ -931,7 +927,7 @@ func (e *encodeState) stringBytes(s []byte) (int, error) {
e.Write(s[start:])
}
e.WriteByte('"')
return e.Len() - len0, nil
return e.Len() - len0
}
// A field represents a single field found in a struct.

10
src/encoding/json/encode_test.go
View File

@ -381,16 +381,10 @@ func TestStringBytes(t *testing.T) {
r = append(r, i)
}
s := string(r) + "\xff\xff\xffhello" // some invalid UTF-8 too
_, err := es.string(s)
if err != nil {
t.Fatal(err)
}
es.string(s)
esBytes := &encodeState{}
_, err = esBytes.stringBytes([]byte(s))
if err != nil {
t.Fatal(err)
}
esBytes.stringBytes([]byte(s))
enc := es.Buffer.String()
encBytes := esBytes.Buffer.String()