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Merge pull request #3533 from karalabe/modum-io-develop-2

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accounts/abi: support custom int slice types
This commit is contained in:
Péter Szilágyi 2017-01-09 11:49:17 +02:00 committed by GitHub
commit 88cc1ca55a
4 changed files with 93 additions and 17 deletions
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48
accounts/abi/abi.go
View File

@ -91,8 +91,30 @@ func toGoSlice(i int, t Argument, output []byte) (interface{}, error) {
// first we need to create a slice of the type
var refSlice reflect.Value
switch elem.T {
case IntTy, UintTy, BoolTy: // int, uint, bool can all be of type big int.
refSlice = reflect.ValueOf([]*big.Int(nil))
case IntTy, UintTy, BoolTy:
// create a new reference slice matching the element type
switch t.Type.Kind {
case reflect.Bool:
refSlice = reflect.ValueOf([]bool(nil))
case reflect.Uint8:
refSlice = reflect.ValueOf([]uint8(nil))
case reflect.Uint16:
refSlice = reflect.ValueOf([]uint16(nil))
case reflect.Uint32:
refSlice = reflect.ValueOf([]uint32(nil))
case reflect.Uint64:
refSlice = reflect.ValueOf([]uint64(nil))
case reflect.Int8:
refSlice = reflect.ValueOf([]int8(nil))
case reflect.Int16:
refSlice = reflect.ValueOf([]int16(nil))
case reflect.Int32:
refSlice = reflect.ValueOf([]int32(nil))
case reflect.Int64:
refSlice = reflect.ValueOf([]int64(nil))
default:
refSlice = reflect.ValueOf([]*big.Int(nil))
}
case AddressTy: // address must be of slice Address
refSlice = reflect.ValueOf([]common.Address(nil))
case HashTy: // hash must be of slice hash
@ -147,7 +169,27 @@ func toGoSlice(i int, t Argument, output []byte) (interface{}, error) {
// set inter to the correct type (cast)
switch elem.T {
case IntTy, UintTy:
inter = common.BytesToBig(returnOutput)
bigNum := common.BytesToBig(returnOutput)
switch t.Type.Kind {
case reflect.Uint8:
inter = uint8(bigNum.Uint64())
case reflect.Uint16:
inter = uint16(bigNum.Uint64())
case reflect.Uint32:
inter = uint32(bigNum.Uint64())
case reflect.Uint64:
inter = bigNum.Uint64()
case reflect.Int8:
inter = int8(bigNum.Int64())
case reflect.Int16:
inter = int16(bigNum.Int64())
case reflect.Int32:
inter = int32(bigNum.Int64())
case reflect.Int64:
inter = bigNum.Int64()
default:
inter = common.BytesToBig(returnOutput)
}
case BoolTy:
inter = common.BytesToBig(returnOutput).Uint64() > 0
case AddressTy:

24
accounts/abi/abi_test.go
View File

@ -332,6 +332,30 @@ func TestUnpackSetInterfaceSlice(t *testing.T) {
}
}
func TestUnpackSetInterfaceArrayOutput(t *testing.T) {
var (
var1 = new([1]uint32)
var2 = new([1]uint32)
)
out := []interface{}{var1, var2}
abi, err := JSON(strings.NewReader(`[{"type":"function", "name":"ints", "outputs":[{"type":"uint32[1]"}, {"type":"uint32[1]"}]}]`))
if err != nil {
t.Fatal(err)
}
marshalledReturn := append(pad([]byte{1}, 32, true), pad([]byte{2}, 32, true)...)
err = abi.Unpack(&out, "ints", marshalledReturn)
if err != nil {
t.Fatal(err)
}
if *var1 != [1]uint32{1} {
t.Error("expected var1 to be [1], got", *var1)
}
if *var2 != [1]uint32{2} {
t.Error("expected var2 to be [2], got", *var2)
}
}
func TestPack(t *testing.T) {
for i, test := range []struct {
typ string

14
accounts/abi/type.go
View File

@ -91,7 +91,12 @@ func NewType(t string) (typ Type, err error) {
}
typ.Elem = &sliceType
typ.stringKind = sliceType.stringKind + t[len(res[1]):]
return typ, nil
// Altough we know that this is an array, we cannot return
// as we don't know the type of the element, however, if it
// is still an array, then don't determine the type.
if typ.Elem.IsArray || typ.Elem.IsSlice {
return typ, nil
}
}
// parse the type and size of the abi-type.
@ -112,7 +117,12 @@ func NewType(t string) (typ Type, err error) {
varSize = 256
t += "256"
}
typ.stringKind = t
// only set stringKind if not array or slice, as for those,
// the correct string type has been set
if !(typ.IsArray || typ.IsSlice) {
typ.stringKind = t
}
switch varType {
case "int":

24
accounts/abi/type_test.go
View File

@ -34,17 +34,17 @@ func TestTypeRegexp(t *testing.T) {
{"int", Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}},
{"int8", Type{Kind: reflect.Int8, Type: big_t, Size: 8, T: IntTy, stringKind: "int8"}},
{"int256", Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}},
{"int[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[]"}},
{"int[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[2]"}},
{"int32[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[]"}},
{"int32[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[2]"}},
{"int[]", Type{IsSlice: true, SliceSize: -1, Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, Elem: &Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[]"}},
{"int[2]", Type{IsArray: true, SliceSize: 2, Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, Elem: &Type{Kind: reflect.Ptr, Type: big_t, Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[2]"}},
{"int32[]", Type{IsSlice: true, SliceSize: -1, Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, Elem: &Type{Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[]"}},
{"int32[2]", Type{IsArray: true, SliceSize: 2, Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, Elem: &Type{Kind: reflect.Int32, Type: big_t, Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[2]"}},
{"uint", Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}},
{"uint8", Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}},
{"uint256", Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}},
{"uint[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[]"}},
{"uint[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[2]"}},
{"uint32[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint32, Type: big_t, Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[]"}},
{"uint32[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Uint32, Type: big_t, Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[2]"}},
{"uint[]", Type{IsSlice: true, SliceSize: -1, Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, Elem: &Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[]"}},
{"uint[2]", Type{IsArray: true, SliceSize: 2, Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, Elem: &Type{Kind: reflect.Ptr, Type: ubig_t, Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[2]"}},
{"uint32[]", Type{IsSlice: true, SliceSize: -1, Kind: reflect.Uint32, Type: ubig_t, Size: 32, T: UintTy, Elem: &Type{Kind: reflect.Uint32, Type: big_t, Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[]"}},
{"uint32[2]", Type{IsArray: true, SliceSize: 2, Kind: reflect.Uint32, Type: ubig_t, Size: 32, T: UintTy, Elem: &Type{Kind: reflect.Uint32, Type: big_t, Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[2]"}},
{"bytes", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: BytesTy, stringKind: "bytes"}},
{"bytes32", Type{IsArray: true, SliceSize: 32, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: FixedBytesTy, stringKind: "bytes32"}},
{"bytes[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: BytesTy, stringKind: "bytes"}, stringKind: "bytes[]"}},
@ -52,11 +52,11 @@ func TestTypeRegexp(t *testing.T) {
{"bytes32[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{IsArray: true, SliceSize: 32, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: FixedBytesTy, stringKind: "bytes32"}, stringKind: "bytes32[]"}},
{"bytes32[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{IsArray: true, SliceSize: 32, Elem: &Type{Kind: reflect.Uint8, Type: ubig_t, Size: 8, T: UintTy, stringKind: "uint8"}, T: FixedBytesTy, stringKind: "bytes32"}, stringKind: "bytes32[2]"}},
{"string", Type{Kind: reflect.String, Size: -1, T: StringTy, stringKind: "string"}},
{"string[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.String, Size: -1, T: StringTy, stringKind: "string"}, stringKind: "string[]"}},
{"string[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.String, Size: -1, T: StringTy, stringKind: "string"}, stringKind: "string[2]"}},
{"string[]", Type{IsSlice: true, SliceSize: -1, Kind: reflect.String, T: StringTy, Size: -1, Elem: &Type{Kind: reflect.String, T: StringTy, Size: -1, stringKind: "string"}, stringKind: "string[]"}},
{"string[2]", Type{IsArray: true, SliceSize: 2, Kind: reflect.String, T: StringTy, Size: -1, Elem: &Type{Kind: reflect.String, T: StringTy, Size: -1, stringKind: "string"}, stringKind: "string[2]"}},
{"address", Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}},
{"address[]", Type{IsSlice: true, SliceSize: -1, Elem: &Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[]"}},
{"address[2]", Type{IsArray: true, SliceSize: 2, Elem: &Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[2]"}},
{"address[]", Type{IsSlice: true, SliceSize: -1,Kind: reflect.Array, Type:address_t, T: AddressTy, Size:20, Elem: &Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[]"}},
{"address[2]", Type{IsArray: true, SliceSize: 2,Kind: reflect.Array, Type:address_t, T: AddressTy, Size:20, Elem: &Type{Kind: reflect.Array, Type: address_t, Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[2]"}},
// TODO when fixed types are implemented properly
// {"fixed", Type{}},