diff --git a/rlp/decode.go b/rlp/decode.go
index 7acbbfa0d2244fb7a7f1abe858384bb2e4e555c7..31485ee707a241ed634ee9040d1b6a1000e44ddc 100644
--- a/rlp/decode.go
+++ b/rlp/decode.go
@@ -54,7 +54,7 @@ type Decoder interface {
// To decode into a Go string, the input must be an RLP string. The
// bytes are taken as-is and will not necessarily be valid UTF-8.
//
-// To decode into an integer type, the input must also be an RLP
+// To decode into an unsigned integer type, the input must also be an RLP
// string. The bytes are interpreted as a big endian representation of
// the integer. If the RLP string is larger than the bit size of the
// type, Decode will return an error. Decode also supports *big.Int.
@@ -66,8 +66,9 @@ type Decoder interface {
// []interface{}, for RLP lists
// []byte, for RLP strings
//
-// Non-empty interface types are not supported, nor are bool, float32,
-// float64, maps, channel types and functions.
+// Non-empty interface types are not supported, nor are booleans,
+// signed integers, floating point numbers, maps, channels and
+// functions.
func Decode(r io.Reader, val interface{}) error {
return NewStream(r).Decode(val)
}
@@ -97,8 +98,8 @@ func makeDecoder(typ reflect.Type) (dec decoder, err error) {
return decodeBigInt, nil
case typ.AssignableTo(bigInt):
return decodeBigIntNoPtr, nil
- case isInteger(kind):
- return makeNumDecoder(typ), nil
+ case isUint(kind):
+ return decodeUint, nil
case kind == reflect.String:
return decodeString, nil
case kind == reflect.Slice || kind == reflect.Array:
@@ -114,30 +115,6 @@ func makeDecoder(typ reflect.Type) (dec decoder, err error) {
}
}
-func makeNumDecoder(typ reflect.Type) decoder {
- kind := typ.Kind()
- switch {
- case kind <= reflect.Int64:
- return decodeInt
- case kind <= reflect.Uint64:
- return decodeUint
- default:
- panic("fallthrough")
- }
-}
-
-func decodeInt(s *Stream, val reflect.Value) error {
- typ := val.Type()
- num, err := s.uint(typ.Bits())
- if err == errUintOverflow {
- return decodeError{"input string too long", typ}
- } else if err != nil {
- return err
- }
- val.SetInt(int64(num))
- return nil
-}
-
func decodeUint(s *Stream, val reflect.Value) error {
typ := val.Type()
num, err := s.uint(typ.Bits())
diff --git a/rlp/decode_test.go b/rlp/decode_test.go
index 3b60234dd9f4f89a3f0bbce8432307a3532c20fe..4c030e24d231a056c22c1d66444076f1ca695d40 100644
--- a/rlp/decode_test.go
+++ b/rlp/decode_test.go
@@ -171,7 +171,7 @@ func TestDecodeErrors(t *testing.T) {
t.Errorf("Decode(r, new(chan bool)) error mismatch, got %q, want %q", err, expectErr)
}
- if err := Decode(r, new(int)); err != io.EOF {
+ if err := Decode(r, new(uint)); err != io.EOF {
t.Errorf("Decode(r, new(int)) error mismatch, got %q, want %q", err, io.EOF)
}
}
@@ -184,12 +184,12 @@ type decodeTest struct {
}
type simplestruct struct {
- A int
+ A uint
B string
}
type recstruct struct {
- I int
+ I uint
Child *recstruct
}
@@ -202,7 +202,7 @@ var (
var (
sharedByteArray [5]byte
- sharedPtr = new(*int)
+ sharedPtr = new(*uint)
)
var decodeTests = []decodeTest{
@@ -217,13 +217,13 @@ var decodeTests = []decodeTest{
{input: "C0", ptr: new(uint32), error: ErrExpectedString.Error()},
// slices
- {input: "C0", ptr: new([]int), value: []int{}},
- {input: "C80102030405060708", ptr: new([]int), value: []int{1, 2, 3, 4, 5, 6, 7, 8}},
+ {input: "C0", ptr: new([]uint), value: []uint{}},
+ {input: "C80102030405060708", ptr: new([]uint), value: []uint{1, 2, 3, 4, 5, 6, 7, 8}},
// arrays
- {input: "C0", ptr: new([5]int), value: [5]int{}},
- {input: "C50102030405", ptr: new([5]int), value: [5]int{1, 2, 3, 4, 5}},
- {input: "C6010203040506", ptr: new([5]int), error: "rlp: input list has too many elements for [5]int"},
+ {input: "C0", ptr: new([5]uint), value: [5]uint{}},
+ {input: "C50102030405", ptr: new([5]uint), value: [5]uint{1, 2, 3, 4, 5}},
+ {input: "C6010203040506", ptr: new([5]uint), error: "rlp: input list has too many elements for [5]uint"},
// byte slices
{input: "01", ptr: new([]byte), value: []byte{1}},
@@ -280,17 +280,17 @@ var decodeTests = []decodeTest{
},
// pointers
- {input: "00", ptr: new(*int), value: (*int)(nil)},
- {input: "80", ptr: new(*int), value: (*int)(nil)},
- {input: "C0", ptr: new(*int), value: (*int)(nil)},
- {input: "07", ptr: new(*int), value: intp(7)},
- {input: "8108", ptr: new(*int), value: intp(8)},
- {input: "C109", ptr: new(*[]int), value: &[]int{9}},
+ {input: "00", ptr: new(*uint), value: (*uint)(nil)},
+ {input: "80", ptr: new(*uint), value: (*uint)(nil)},
+ {input: "C0", ptr: new(*uint), value: (*uint)(nil)},
+ {input: "07", ptr: new(*uint), value: uintp(7)},
+ {input: "8108", ptr: new(*uint), value: uintp(8)},
+ {input: "C109", ptr: new(*[]uint), value: &[]uint{9}},
{input: "C58403030303", ptr: new(*[][]byte), value: &[][]byte{{3, 3, 3, 3}}},
// pointer should be reset to nil
- {input: "05", ptr: sharedPtr, value: intp(5)},
- {input: "80", ptr: sharedPtr, value: (*int)(nil)},
+ {input: "05", ptr: sharedPtr, value: uintp(5)},
+ {input: "80", ptr: sharedPtr, value: (*uint)(nil)},
// interface{}
{input: "00", ptr: new(interface{}), value: []byte{0}},
@@ -301,7 +301,7 @@ var decodeTests = []decodeTest{
{input: "C50183040404", ptr: new(interface{}), value: []interface{}{[]byte{1}, []byte{4, 4, 4}}},
}
-func intp(i int) *int { return &i }
+func uintp(i uint) *uint { return &i }
func runTests(t *testing.T, decode func([]byte, interface{}) error) {
for i, test := range decodeTests {
@@ -434,8 +434,8 @@ func ExampleDecode() {
input, _ := hex.DecodeString("C90A1486666F6F626172")
type example struct {
- A, B int
- private int // private fields are ignored
+ A, B uint
+ private uint // private fields are ignored
String string
}
@@ -447,7 +447,7 @@ func ExampleDecode() {
fmt.Printf("Decoded value: %#v\n", s)
}
// Output:
- // Decoded value: rlp.example{A:10, B:20, private:0, String:"foobar"}
+ // Decoded value: rlp.example{A:0xa, B:0x14, private:0x0, String:"foobar"}
}
func ExampleStream() {
diff --git a/rlp/typecache.go b/rlp/typecache.go
index f2595dac82ebe219d779604f720d4bd222016d62..52e68a3c537b2b4f7ee2e68f4c83293fe235ebd0 100644
--- a/rlp/typecache.go
+++ b/rlp/typecache.go
@@ -57,6 +57,6 @@ func genTypeInfo(typ reflect.Type) (info *typeinfo, err error) {
return info, nil
}
-func isInteger(k reflect.Kind) bool {
- return k >= reflect.Int && k <= reflect.Uintptr
+func isUint(k reflect.Kind) bool {
+ return k >= reflect.Uint && k <= reflect.Uintptr
}