diff options
| -rw-r--r-- | accounts/abi/abi.go | 2 | ||||
| -rw-r--r-- | accounts/abi/abi_test.go | 2 | ||||
| -rw-r--r-- | accounts/abi/argument.go | 81 | ||||
| -rw-r--r-- | accounts/abi/unpackv2_test.go | 1 |
4 files changed, 33 insertions, 53 deletions
diff --git a/accounts/abi/abi.go b/accounts/abi/abi.go index 32f041890..fd286c2c2 100644 --- a/accounts/abi/abi.go +++ b/accounts/abi/abi.go @@ -136,7 +136,7 @@ func (abi *ABI) UnmarshalJSON(data []byte) error { // MethodById looks up a method by the 4-byte id // returns nil if none found -func (abi *ABI) MethodById(sigdata []byte) (*Method, error){ +func (abi *ABI) MethodById(sigdata []byte) (*Method, error) { for _, method := range abi.Methods { if bytes.Equal(method.Id(), sigdata[:4]) { return &method, nil diff --git a/accounts/abi/abi_test.go b/accounts/abi/abi_test.go index 3bef6add5..e66828240 100644 --- a/accounts/abi/abi_test.go +++ b/accounts/abi/abi_test.go @@ -689,7 +689,7 @@ func TestABI_MethodById(t *testing.T) { } for name, m := range abi.Methods { a := fmt.Sprintf("%v", m) - m2,err := abi.MethodById(m.Id()) + m2, err := abi.MethodById(m.Id()) if err != nil { t.Fatal(err) } diff --git a/accounts/abi/argument.go b/accounts/abi/argument.go index b9b537121..bdd0894f1 100644 --- a/accounts/abi/argument.go +++ b/accounts/abi/argument.go @@ -67,10 +67,10 @@ func (arguments Arguments) LengthNonIndexed() int { return out } -func (arguments Arguments) NonIndexed() Arguments{ +func (arguments Arguments) NonIndexed() Arguments { var ret []Argument - for _,arg := range arguments{ - if !arg.Indexed{ + for _, arg := range arguments { + if !arg.Indexed { ret = append(ret, arg) } } @@ -84,21 +84,27 @@ func (arguments Arguments) isTuple() bool { // Unpack performs the operation hexdata -> Go format func (arguments Arguments) Unpack(v interface{}, data []byte) error { - if arguments.isTuple() { - return arguments.unpackTuple(v, data) - } - return arguments.unpackAtomic(v, data) -} -func (arguments Arguments) unpackTuple(v interface{}, output []byte) error { // make sure the passed value is arguments pointer - valueOf := reflect.ValueOf(v) - if reflect.Ptr != valueOf.Kind() { + if reflect.Ptr != reflect.ValueOf(v).Kind() { return fmt.Errorf("abi: Unpack(non-pointer %T)", v) } + marshalledValues, err := arguments.UnpackValues(data) + if err != nil { + return err + } + + if arguments.isTuple() { + return arguments.unpackTuple(v, marshalledValues) + } + return arguments.unpackAtomic(v, marshalledValues) +} + +func (arguments Arguments) unpackTuple(v interface{}, marshalledValues []interface{}) error { + var ( - value = valueOf.Elem() + value = reflect.ValueOf(v).Elem() typ = value.Type() kind = value.Kind() ) @@ -120,25 +126,9 @@ func (arguments Arguments) unpackTuple(v interface{}, output []byte) error { exists[field] = true } } - // `i` counts the nonindexed arguments. - // `j` counts the number of complex types. - // both `i` and `j` are used to to correctly compute `data` offset. - - j := 0 for i, arg := range arguments.NonIndexed() { - marshalledValue, err := toGoType((i+j)*32, arg.Type, output) - if err != nil { - return err - } - - if arg.Type.T == ArrayTy { - // combined index ('i' + 'j') need to be adjusted only by size of array, thus - // we need to decrement 'j' because 'i' was incremented - j += arg.Type.Size - 1 - } - - reflectValue := reflect.ValueOf(marshalledValue) + reflectValue := reflect.ValueOf(marshalledValues[i]) switch kind { case reflect.Struct: @@ -171,37 +161,29 @@ func (arguments Arguments) unpackTuple(v interface{}, output []byte) error { } // unpackAtomic unpacks ( hexdata -> go ) a single value -func (arguments Arguments) unpackAtomic(v interface{}, output []byte) error { - // make sure the passed value is arguments pointer - valueOf := reflect.ValueOf(v) - if reflect.Ptr != valueOf.Kind() { - return fmt.Errorf("abi: Unpack(non-pointer %T)", v) - } - arg := arguments[0] - if arg.Indexed { - return fmt.Errorf("abi: attempting to unpack indexed variable into element.") - } +func (arguments Arguments) unpackAtomic(v interface{}, marshalledValues []interface{}) error { - value := valueOf.Elem() - marshalledValue, err := toGoType(0, arg.Type, output) - if err != nil { - return err + if len(marshalledValues) != 1 { + return fmt.Errorf("abi: wrong length, expected single value, got %d", len(marshalledValues)) } - return set(value, reflect.ValueOf(marshalledValue), arg) + + elem := reflect.ValueOf(v).Elem() + reflectValue := reflect.ValueOf(marshalledValues[0]) + return set(elem, reflectValue, arguments.NonIndexed()[0]) } // UnpackValues can be used to unpack ABI-encoded hexdata according to the ABI-specification, // without supplying a struct to unpack into. Instead, this method returns a list containing the // values. An atomic argument will be a list with one element. -func (arguments Arguments) UnpackValues(data []byte) ([]interface{}, error){ +func (arguments Arguments) UnpackValues(data []byte) ([]interface{}, error) { - retval := make([]interface{},0,arguments.LengthNonIndexed()) + retval := make([]interface{}, 0, arguments.LengthNonIndexed()) virtualArgs := 0 - for index,arg:= range arguments.NonIndexed(){ + for index, arg := range arguments.NonIndexed() { - marshalledValue, err := toGoType((index + virtualArgs) * 32, arg.Type, data) + marshalledValue, err := toGoType((index+virtualArgs)*32, arg.Type, data) if arg.Type.T == ArrayTy { //If we have a static array, like [3]uint256, these are coded as @@ -212,7 +194,7 @@ func (arguments Arguments) UnpackValues(data []byte) ([]interface{}, error){ virtualArgs += arg.Type.Size - 1 } - if err != nil{ + if err != nil { return nil, err } retval = append(retval, marshalledValue) @@ -226,7 +208,6 @@ func (arguments Arguments) PackValues(args []interface{}) ([]byte, error) { return arguments.Pack(args...) } - // Pack performs the operation Go format -> Hexdata func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) { // Make sure arguments match up and pack them diff --git a/accounts/abi/unpackv2_test.go b/accounts/abi/unpackv2_test.go index d0074ff7b..364a09762 100644 --- a/accounts/abi/unpackv2_test.go +++ b/accounts/abi/unpackv2_test.go @@ -57,7 +57,6 @@ func TestUnpackV2(t *testing.T) { } } - func TestMultiReturnWithArrayV2(t *testing.T) { const definition = `[{"name" : "multi", "outputs": [{"type": "uint64[3]"}, {"type": "uint64"}]}]` abi, err := JSON(strings.NewReader(definition)) |