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authorFelix Lange <fjl@twurst.com>2014-12-09 17:39:39 +0800
committerFelix Lange <fjl@twurst.com>2014-12-09 17:52:05 +0800
commit4f12f0697e645a567fac9f13ed8cdb25e1218b84 (patch)
tree92972f699f6236e09aee3ec7e197f31d60108298 /rlp/decode.go
parent195b2d2ebdfe1e794c096c9b6c9fe91e9df7af1d (diff)
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rlp: move decoder type switch to decode.go
Diffstat (limited to 'rlp/decode.go')
-rw-r--r--rlp/decode.go33
1 files changed, 33 insertions, 0 deletions
diff --git a/rlp/decode.go b/rlp/decode.go
index 7d95af02b..7acbbfa0d 100644
--- a/rlp/decode.go
+++ b/rlp/decode.go
@@ -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 {