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abi: accept input slices of all supported types

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This commit is contained in:
Jeffrey Wilcke
2016-03-30 16:22:02 +02:00
parent 96c7c39ae4
commit 022cbd6800
5 changed files with 118 additions and 157 deletions
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119
accounts/abi/type.go
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@ -96,63 +96,57 @@ func NewType(t string) (typ Type, err error) {
t += "256"
}
switch vtype {
case "int":
typ.Kind = reflect.Ptr
typ.Type = big_t
typ.Size = 256
typ.T = IntTy
case "uint":
typ.Kind = reflect.Ptr
typ.Type = ubig_t
typ.Size = 256
typ.T = UintTy
case "bool":
typ.Kind = reflect.Bool
typ.T = BoolTy
case "real": // TODO
typ.Kind = reflect.Invalid
case "address":
typ.Kind = reflect.Slice
typ.Type = address_t
typ.Size = 20
typ.T = AddressTy
case "string":
typ.Kind = reflect.String
typ.Size = -1
typ.T = StringTy
if vsize > 0 {
typ.Size = 32
}
case "hash":
typ.Kind = reflect.Slice
typ.Size = 32
typ.Type = hash_t
typ.T = HashTy
case "bytes":
typ.Kind = reflect.Slice
typ.Type = byte_ts
typ.Size = vsize
if vsize == 0 {
typ.T = BytesTy
} else {
typ.T = FixedBytesTy
}
default:
return Type{}, fmt.Errorf("unsupported arg type: %s", t)
}
// if the type is a slice we must set Kind to a reflect.Slice
// so that serialisation can be determined based on this kind.
if isslice {
typ.Kind = reflect.Slice
typ.Size = size
switch vtype {
case "int":
typ.Type = big_ts
case "uint":
typ.Type = ubig_ts
default:
return Type{}, fmt.Errorf("unsupported arg slice type: %s", t)
}
} else {
switch vtype {
case "int":
typ.Kind = reflect.Ptr
typ.Type = big_t
typ.Size = 256
typ.T = IntTy
case "uint":
typ.Kind = reflect.Ptr
typ.Type = ubig_t
typ.Size = 256
typ.T = UintTy
case "bool":
typ.Kind = reflect.Bool
typ.T = BoolTy
case "real": // TODO
typ.Kind = reflect.Invalid
case "address":
typ.Kind = reflect.Slice
typ.Type = address_t
typ.Size = 20
typ.T = AddressTy
case "string":
typ.Kind = reflect.String
typ.Size = -1
typ.T = StringTy
if vsize > 0 {
typ.Size = 32
}
case "hash":
typ.Kind = reflect.Slice
typ.Size = 32
typ.Type = hash_t
typ.T = HashTy
case "bytes":
typ.Kind = reflect.Slice
typ.Type = byte_ts
typ.Size = vsize
if vsize == 0 {
typ.T = BytesTy
} else {
typ.T = FixedBytesTy
}
default:
return Type{}, fmt.Errorf("unsupported arg type: %s", t)
}
}
typ.stringKind = t
@ -203,7 +197,7 @@ func (t Type) pack(v interface{}) ([]byte, error) {
return packBytesSlice([]byte(value.String()), value.Len()), nil
case reflect.Slice:
// if the param is a bytes type, pack the slice up as a string
// Byte slice is a special case, it gets treated as a single value
if t.T == BytesTy {
return packBytesSlice(value.Bytes(), value.Len()), nil
}
@ -212,21 +206,20 @@ func (t Type) pack(v interface{}) ([]byte, error) {
return nil, fmt.Errorf("%v out of bound. %d for %d", value.Kind(), value.Len(), t.Size)
}
// Address is a special slice. The slice acts as one rather than a list of elements.
if t.T == AddressTy {
return common.LeftPadBytes(v.([]byte), 32), nil
}
// Signed / Unsigned check
if (t.T != IntTy && isSigned(value)) || (t.T == UintTy && isSigned(value)) {
if value.Type() == big_t && (t.T != IntTy && isSigned(value)) || (t.T == UintTy && isSigned(value)) {
return nil, fmt.Errorf("slice of incompatible types.")
}
var packed []byte
for i := 0; i < value.Len(); i++ {
packed = append(packed, packNum(value.Index(i), t.T)...)
val, err := t.pack(value.Index(i).Interface())
if err != nil {
return nil, err
}
packed = append(packed, val...)
}
return packed, nil
return packBytesSlice(packed, value.Len()), nil
case reflect.Bool:
if value.Bool() {
return common.LeftPadBytes(common.Big1.Bytes(), 32), nil