1 // Protocol Buffers for Go with Gadgets 2 // 3 // Copyright (c) 2013, The GoGo Authors. All rights reserved. 4 // http://github.com/gogo/protobuf 5 // 6 // Redistribution and use in source and binary forms, with or without 7 // modification, are permitted provided that the following conditions are 8 // met: 9 // 10 // * Redistributions of source code must retain the above copyright 11 // notice, this list of conditions and the following disclaimer. 12 // * Redistributions in binary form must reproduce the above 13 // copyright notice, this list of conditions and the following disclaimer 14 // in the documentation and/or other materials provided with the 15 // distribution. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 package proto 30 31 import ( 32 "fmt" 33 "reflect" 34 ) 35 36 func (tm *TextMarshaler) writeEnum(w *textWriter, v reflect.Value, props *Properties) error { 37 m, ok := enumStringMaps[props.Enum] 38 if !ok { 39 if err := tm.writeAny(w, v, props); err != nil { 40 return err 41 } 42 } 43 key := int32(0) 44 if v.Kind() == reflect.Ptr { 45 key = int32(v.Elem().Int()) 46 } else { 47 key = int32(v.Int()) 48 } 49 s, ok := m[key] 50 if !ok { 51 if err := tm.writeAny(w, v, props); err != nil { 52 return err 53 } 54 } 55 _, err := fmt.Fprint(w, s) 56 return err 57 } 58