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path: root/accounts/abi/abi.go
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Diffstat (limited to 'accounts/abi/abi.go')
-rw-r--r--accounts/abi/abi.go57
1 files changed, 10 insertions, 47 deletions
diff --git a/accounts/abi/abi.go b/accounts/abi/abi.go
index 9ef7c0f0d..82ea4a0d5 100644
--- a/accounts/abi/abi.go
+++ b/accounts/abi/abi.go
@@ -48,42 +48,6 @@ func JSON(reader io.Reader) (ABI, error) {
return abi, nil
}
-// tests, tests whether the given input would result in a successful
-// call. Checks argument list count and matches input to `input`.
-func (abi ABI) pack(method Method, args ...interface{}) ([]byte, error) {
- // variable input is the output appended at the end of packed
- // output. This is used for strings and bytes types input.
- var variableInput []byte
-
- var ret []byte
- for i, a := range args {
- input := method.Inputs[i]
- // pack the input
- packed, err := input.Type.pack(a)
- if err != nil {
- return nil, fmt.Errorf("`%s` %v", method.Name, err)
- }
-
- // check for a slice type (string, bytes, slice)
- if input.Type.T == StringTy || input.Type.T == BytesTy || input.Type.IsSlice {
- // calculate the offset
- offset := len(method.Inputs)*32 + len(variableInput)
- // set the offset
- ret = append(ret, packNum(reflect.ValueOf(offset), UintTy)...)
- // Append the packed output to the variable input. The variable input
- // will be appended at the end of the input.
- variableInput = append(variableInput, packed...)
- } else {
- // append the packed value to the input
- ret = append(ret, packed...)
- }
- }
- // append the variable input at the end of the packed input
- ret = append(ret, variableInput...)
-
- return ret, nil
-}
-
// Pack the given method name to conform the ABI. Method call's data
// will consist of method_id, args0, arg1, ... argN. Method id consists
// of 4 bytes and arguments are all 32 bytes.
@@ -102,11 +66,7 @@ func (abi ABI) Pack(name string, args ...interface{}) ([]byte, error) {
}
method = m
}
- // Make sure arguments match up and pack them
- if len(args) != len(method.Inputs) {
- return nil, fmt.Errorf("argument count mismatch: %d for %d", len(args), len(method.Inputs))
- }
- arguments, err := abi.pack(method, args...)
+ arguments, err := method.pack(method, args...)
if err != nil {
return nil, err
}
@@ -126,18 +86,21 @@ func toGoSlice(i int, t Argument, output []byte) (interface{}, error) {
if index+32 > len(output) {
return nil, fmt.Errorf("abi: cannot marshal in to go slice: insufficient size output %d require %d", len(output), index+32)
}
+ elem := t.Type.Elem
// first we need to create a slice of the type
var refSlice reflect.Value
- switch t.Type.T {
+ switch elem.T {
case IntTy, UintTy, BoolTy: // int, uint, bool can all be of type big int.
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
refSlice = reflect.ValueOf([]common.Hash(nil))
+ case FixedBytesTy:
+ refSlice = reflect.ValueOf([]byte(nil))
default: // no other types are supported
- return nil, fmt.Errorf("abi: unsupported slice type %v", t.Type.T)
+ return nil, fmt.Errorf("abi: unsupported slice type %v", elem.T)
}
// get the offset which determines the start of this array ...
offset := int(common.BytesToBig(output[index : index+32]).Uint64())
@@ -164,7 +127,7 @@ func toGoSlice(i int, t Argument, output []byte) (interface{}, error) {
)
// set inter to the correct type (cast)
- switch t.Type.T {
+ switch elem.T {
case IntTy, UintTy:
inter = common.BytesToBig(returnOutput)
case BoolTy:
@@ -186,7 +149,7 @@ 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 {
+ if (t.Type.IsSlice || t.Type.IsArray) && t.Type.T != BytesTy && t.Type.T != StringTy && t.Type.T != FixedBytesTy {
return toGoSlice(i, t, output)
}
@@ -328,8 +291,8 @@ func set(dst, src reflect.Value, output Argument) error {
return fmt.Errorf("abi: cannot unmarshal %v in to array of elem %v", src.Type(), dstType.Elem())
}
- if dst.Len() < output.Type.Size {
- return fmt.Errorf("abi: cannot unmarshal src (len=%d) in to dst (len=%d)", output.Type.Size, dst.Len())
+ if dst.Len() < output.Type.SliceSize {
+ return fmt.Errorf("abi: cannot unmarshal src (len=%d) in to dst (len=%d)", output.Type.SliceSize, dst.Len())
}
reflect.Copy(dst, src)
default: