Method encodeStruct

json/encode.go:738–782

(b []byte, p unsafe.Pointer, st *structType)

}

func (e encoder) encodeStruct(b []byte, p unsafe.Pointer, st *structType) ([]byte, error) {
	start := len(b)
	var err error
	var k string
	var n int
	b = append(b, '{')

	escapeHTML := (e.flags & EscapeHTML) != 0

	for i := range st.fields {
		f := &st.fields[i]
		v := unsafe.Pointer(uintptr(p) + f.offset)

		if f.omitempty && f.empty(v) {
			continue
		}

		if escapeHTML {
			k = f.html
		} else {
			k = f.json
		}

		lengthBeforeKey := len(b)

		if n != 0 {
			b = append(b, k...)
		} else {
			b = append(b, k[1:]...)
		}

		if b, err = f.codec.encode(e, b, v); err != nil {
			if err == (rollback{}) {
				b = b[:lengthBeforeKey]
				continue
			}
			return b[:start], err
		}

		n++
	}

	b = append(b, '}')
	return b, nil
}

type rollback struct{}