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rlp: move decoder type switch to decode.go

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This commit is contained in:
Felix Lange 2014-12-09 10:39:39 +01:00
parent 195b2d2ebd
commit 4f12f0697e
2 changed files with 36 additions and 32 deletions
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33
rlp/decode.go
View File

@ -81,6 +81,39 @@ func (err decodeError) Error() string {
return fmt.Sprintf("rlp: %s for %v", err.msg, err.typ)
}
var (
decoderInterface = reflect.TypeOf(new(Decoder)).Elem()
bigInt = reflect.TypeOf(big.Int{})
)
func makeDecoder(typ reflect.Type) (dec decoder, err error) {
kind := typ.Kind()
switch {
case typ.Implements(decoderInterface):
return decodeDecoder, nil
case kind != reflect.Ptr && reflect.PtrTo(typ).Implements(decoderInterface):
return decodeDecoderNoPtr, nil
case typ.AssignableTo(reflect.PtrTo(bigInt)):
return decodeBigInt, nil
case typ.AssignableTo(bigInt):
return decodeBigIntNoPtr, nil
case isInteger(kind):
return makeNumDecoder(typ), nil
case kind == reflect.String:
return decodeString, nil
case kind == reflect.Slice || kind == reflect.Array:
return makeListDecoder(typ)
case kind == reflect.Struct:
return makeStructDecoder(typ)
case kind == reflect.Ptr:
return makePtrDecoder(typ)
case kind == reflect.Interface && typ.NumMethod() == 0:
return decodeInterface, nil
default:
return nil, fmt.Errorf("rlp: type %v is not RLP-serializable", typ)
}
}
func makeNumDecoder(typ reflect.Type) decoder {
kind := typ.Kind()
switch {

35
rlp/typecache.go
View File

@ -1,8 +1,6 @@
package rlp
import (
"fmt"
"math/big"
"reflect"
"sync"
)
@ -51,39 +49,12 @@ func cachedTypeInfo1(typ reflect.Type) (*typeinfo, error) {
return typeCache[typ], err
}
var (
decoderInterface = reflect.TypeOf(new(Decoder)).Elem()
bigInt = reflect.TypeOf(big.Int{})
)
func genTypeInfo(typ reflect.Type) (info *typeinfo, err error) {
info = new(typeinfo)
kind := typ.Kind()
switch {
case typ.Implements(decoderInterface):
info.decoder = decodeDecoder
case kind != reflect.Ptr && reflect.PtrTo(typ).Implements(decoderInterface):
info.decoder = decodeDecoderNoPtr
case typ.AssignableTo(reflect.PtrTo(bigInt)):
info.decoder = decodeBigInt
case typ.AssignableTo(bigInt):
info.decoder = decodeBigIntNoPtr
case isInteger(kind):
info.decoder = makeNumDecoder(typ)
case kind == reflect.String:
info.decoder = decodeString
case kind == reflect.Slice || kind == reflect.Array:
info.decoder, err = makeListDecoder(typ)
case kind == reflect.Struct:
info.decoder, err = makeStructDecoder(typ)
case kind == reflect.Ptr:
info.decoder, err = makePtrDecoder(typ)
case kind == reflect.Interface && typ.NumMethod() == 0:
info.decoder = decodeInterface
default:
err = fmt.Errorf("rlp: type %v is not RLP-serializable", typ)
if info.decoder, err = makeDecoder(typ); err != nil {
return nil, err
}
return info, err
return info, nil
}
func isInteger(k reflect.Kind) bool {