diff options
| -rw-r--r-- | rlp/decode.go | 35 | ||||
| -rw-r--r-- | rlp/decode_test.go | 42 | ||||
| -rw-r--r-- | rlp/typecache.go | 4 |
3 files changed, 29 insertions, 52 deletions
diff --git a/rlp/decode.go b/rlp/decode.go index 7acbbfa0d..31485ee70 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 3b60234dd..4c030e24d 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 f2595dac8..52e68a3c5 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 } |