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accounts/abi: add support for function types (#3405)

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This commit is contained in:
RJ 2017-01-05 04:46:44 -06:00 committed by Felix Lange
parent 06b381d1c9
commit 2126d81488
4 changed files with 24 additions and 4 deletions
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4
accounts/abi/abi.go
View File

@ -169,7 +169,7 @@ func toGoSlice(i int, t Argument, output []byte) (interface{}, error) {
// argument in T.
func toGoType(i int, t Argument, output []byte) (interface{}, error) {
// we need to treat slices differently
if (t.Type.IsSlice || t.Type.IsArray) && t.Type.T != BytesTy && t.Type.T != StringTy && t.Type.T != FixedBytesTy {
if (t.Type.IsSlice || t.Type.IsArray) && t.Type.T != BytesTy && t.Type.T != StringTy && t.Type.T != FixedBytesTy && t.Type.T != FunctionTy {
return toGoSlice(i, t, output)
}
@ -233,7 +233,7 @@ func toGoType(i int, t Argument, output []byte) (interface{}, error) {
return common.BytesToAddress(returnOutput), nil
case HashTy:
return common.BytesToHash(returnOutput), nil
case BytesTy, FixedBytesTy:
case BytesTy, FixedBytesTy, FunctionTy:
return returnOutput, nil
case StringTy:
return string(returnOutput), nil

13
accounts/abi/abi_test.go
View File

@ -81,6 +81,7 @@ func TestTypeCheck(t *testing.T) {
{"bytes", common.Hash{1}, ""},
{"string", "hello world", ""},
{"bytes32[]", [][32]byte{[32]byte{}}, ""},
{"function", [24]byte{}, ""},
} {
typ, err := NewType(test.typ)
if err != nil {
@ -197,6 +198,13 @@ func TestSimpleMethodUnpack(t *testing.T) {
"interface",
"",
},
{
`[ { "type": "function" } ]`,
pad([]byte{1}, 32, false),
[24]byte{1},
"function",
"",
},
} {
abiDefinition := fmt.Sprintf(`[{ "name" : "method", "outputs": %s}]`, test.def)
abi, err := JSON(strings.NewReader(abiDefinition))
@ -255,6 +263,10 @@ func TestSimpleMethodUnpack(t *testing.T) {
var v common.Hash
err = abi.Unpack(&v, "method", test.marshalledOutput)
outvar = v
case "function":
var v [24]byte
err = abi.Unpack(&v, "method", test.marshalledOutput)
outvar = v
case "interface":
err = abi.Unpack(&outvar, "method", test.marshalledOutput)
default:
@ -333,6 +345,7 @@ func TestPack(t *testing.T) {
{"uint256[]", []*big.Int{big.NewInt(1), big.NewInt(2)}, formatSliceOutput([]byte{1}, []byte{2})},
{"address[]", []common.Address{common.Address{1}, common.Address{2}}, formatSliceOutput(pad([]byte{1}, 20, false), pad([]byte{2}, 20, false))},
{"bytes32[]", []common.Hash{common.Hash{1}, common.Hash{2}}, formatSliceOutput(pad([]byte{1}, 32, false), pad([]byte{2}, 32, false))},
{"function", [24]byte{1}, pad([]byte{1}, 32, false)},
} {
typ, err := NewType(test.typ)
if err != nil {

2
accounts/abi/packing.go
View File

@ -54,7 +54,7 @@ func packElement(t Type, reflectValue reflect.Value) []byte {
reflectValue = mustArrayToByteSlice(reflectValue)
}
return packBytesSlice(reflectValue.Bytes(), reflectValue.Len())
case FixedBytesTy:
case FixedBytesTy, FunctionTy:
if reflectValue.Kind() == reflect.Array {
reflectValue = mustArrayToByteSlice(reflectValue)
}

9
accounts/abi/type.go
View File

@ -34,6 +34,7 @@ const (
BytesTy
HashTy
FixedpointTy
FunctionTy
)
// Type is the reflection of the supported argument type
@ -148,6 +149,12 @@ func NewType(t string) (typ Type, err error) {
typ.T = FixedBytesTy
typ.SliceSize = varSize
}
case "function":
sliceType, _ := NewType("uint8")
typ.Elem = &sliceType
typ.IsArray = true
typ.T = FunctionTy
typ.SliceSize = 24
default:
return Type{}, fmt.Errorf("unsupported arg type: %s", t)
}
@ -168,7 +175,7 @@ func (t Type) pack(v reflect.Value) ([]byte, error) {
return nil, err
}
if (t.IsSlice || t.IsArray) && t.T != BytesTy && t.T != FixedBytesTy {
if (t.IsSlice || t.IsArray) && t.T != BytesTy && t.T != FixedBytesTy && t.T != FunctionTy {
var packed []byte
for i := 0; i < v.Len(); i++ {