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-rw-r--r--accounts/abi/abi.go79
-rw-r--r--accounts/abi/abi_test.go205
-rw-r--r--accounts/abi/numbers.go2
-rw-r--r--accounts/abi/numbers_test.go4
-rw-r--r--accounts/abi/type.go188
5 files changed, 302 insertions, 176 deletions
diff --git a/accounts/abi/abi.go b/accounts/abi/abi.go
index 91f9700d9..9ef7c0f0d 100644
--- a/accounts/abi/abi.go
+++ b/accounts/abi/abi.go
@@ -20,6 +20,7 @@ import (
"encoding/json"
"fmt"
"io"
+ "math/big"
"reflect"
"strings"
@@ -63,9 +64,8 @@ func (abi ABI) pack(method Method, args ...interface{}) ([]byte, error) {
return nil, fmt.Errorf("`%s` %v", method.Name, err)
}
- // check for a string or bytes input type
- switch input.Type.T {
- case StringTy, BytesTy:
+ // 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
@@ -73,7 +73,7 @@ func (abi ABI) pack(method Method, args ...interface{}) ([]byte, error) {
// Append the packed output to the variable input. The variable input
// will be appended at the end of the input.
variableInput = append(variableInput, packed...)
- default:
+ } else {
// append the packed value to the input
ret = append(ret, packed...)
}
@@ -117,11 +117,80 @@ func (abi ABI) Pack(name string, args ...interface{}) ([]byte, error) {
return append(method.Id(), arguments...), nil
}
+// toGoSliceType prses the input and casts it to the proper slice defined by the ABI
+// argument in T.
+func toGoSlice(i int, t Argument, output []byte) (interface{}, error) {
+ index := i * 32
+ // The slice must, at very least be large enough for the index+32 which is exactly the size required
+ // for the [offset in output, size of offset].
+ 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)
+ }
+
+ // first we need to create a slice of the type
+ var refSlice reflect.Value
+ switch t.Type.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))
+ default: // no other types are supported
+ return nil, fmt.Errorf("abi: unsupported slice type %v", t.Type.T)
+ }
+ // get the offset which determines the start of this array ...
+ offset := int(common.BytesToBig(output[index : index+32]).Uint64())
+ if offset+32 > len(output) {
+ return nil, fmt.Errorf("abi: cannot marshal in to go slice: offset %d would go over slice boundary (len=%d)", len(output), offset+32)
+ }
+
+ slice := output[offset:]
+ // ... starting with the size of the array in elements ...
+ size := int(common.BytesToBig(slice[:32]).Uint64())
+ slice = slice[32:]
+ // ... and make sure that we've at the very least the amount of bytes
+ // available in the buffer.
+ if size*32 > len(slice) {
+ return nil, fmt.Errorf("abi: cannot marshal in to go slice: insufficient size output %d require %d", len(output), offset+32+size*32)
+ }
+
+ // reslice to match the required size
+ slice = slice[:(size * 32)]
+ for i := 0; i < size; i++ {
+ var (
+ inter interface{} // interface type
+ returnOutput = slice[i*32 : i*32+32] // the return output
+ )
+
+ // set inter to the correct type (cast)
+ switch t.Type.T {
+ case IntTy, UintTy:
+ inter = common.BytesToBig(returnOutput)
+ case BoolTy:
+ inter = common.BytesToBig(returnOutput).Uint64() > 0
+ case AddressTy:
+ inter = common.BytesToAddress(returnOutput)
+ case HashTy:
+ inter = common.BytesToHash(returnOutput)
+ }
+ // append the item to our reflect slice
+ refSlice = reflect.Append(refSlice, reflect.ValueOf(inter))
+ }
+
+ // return the interface
+ return refSlice.Interface(), nil
+}
+
// toGoType parses the input and casts it to the proper type defined by the ABI
// argument in T.
func toGoType(i int, t Argument, output []byte) (interface{}, error) {
- index := i * 32
+ // we need to treat slices differently
+ if t.Type.IsSlice {
+ return toGoSlice(i, t, output)
+ }
+ index := i * 32
if index+32 > len(output) {
return nil, fmt.Errorf("abi: cannot marshal in to go type: length insufficient %d require %d", len(output), index+32)
}
diff --git a/accounts/abi/abi_test.go b/accounts/abi/abi_test.go
index 66d2e1b39..a1b3e62d9 100644
--- a/accounts/abi/abi_test.go
+++ b/accounts/abi/abi_test.go
@@ -49,7 +49,9 @@ const jsondata2 = `
{ "type" : "function", "name" : "foo", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" } ] },
{ "type" : "function", "name" : "bar", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" }, { "name" : "string", "type" : "uint16" } ] },
{ "type" : "function", "name" : "slice", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32[2]" } ] },
- { "type" : "function", "name" : "slice256", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint256[2]" } ] }
+ { "type" : "function", "name" : "slice256", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "uint256[2]" } ] },
+ { "type" : "function", "name" : "sliceAddress", "const" : false, "inputs" : [ { "name" : "inputs", "type" : "address[]" } ] },
+ { "type" : "function", "name" : "sliceMultiAddress", "const" : false, "inputs" : [ { "name" : "a", "type" : "address[]" }, { "name" : "b", "type" : "address[]" } ] }
]`
func TestType(t *testing.T) {
@@ -57,7 +59,7 @@ func TestType(t *testing.T) {
if err != nil {
t.Error(err)
}
- if typ.Kind != reflect.Ptr {
+ if typ.Kind != reflect.Uint {
t.Error("expected uint32 to have kind Ptr")
}
@@ -65,10 +67,10 @@ func TestType(t *testing.T) {
if err != nil {
t.Error(err)
}
- if typ.Kind != reflect.Slice {
- t.Error("expected uint32[] to have type slice")
+ if !typ.IsSlice {
+ t.Error("expected uint32[] to be slice")
}
- if typ.Type != ubig_ts {
+ if typ.Type != ubig_t {
t.Error("expcted uith32[] to have type uint64")
}
@@ -76,13 +78,13 @@ func TestType(t *testing.T) {
if err != nil {
t.Error(err)
}
- if typ.Kind != reflect.Slice {
- t.Error("expected uint32[2] to have kind slice")
+ if !typ.IsSlice {
+ t.Error("expected uint32[2] to be slice")
}
- if typ.Type != ubig_ts {
+ if typ.Type != ubig_t {
t.Error("expcted uith32[2] to have type uint64")
}
- if typ.Size != 2 {
+ if typ.SliceSize != 2 {
t.Error("expected uint32[2] to have a size of 2")
}
}
@@ -147,10 +149,6 @@ func TestTestNumbers(t *testing.T) {
t.Errorf("expected send( ptr ) to throw, requires *big.Int instead of *int")
}
- if _, err := abi.Pack("send", 1000); err != nil {
- t.Error("expected send(1000) to cast to big")
- }
-
if _, err := abi.Pack("test", uint32(1000)); err != nil {
t.Error(err)
}
@@ -202,17 +200,7 @@ func TestTestSlice(t *testing.T) {
t.FailNow()
}
- addr := make([]byte, 20)
- if _, err := abi.Pack("address", addr); err != nil {
- t.Error(err)
- }
-
- addr = make([]byte, 21)
- if _, err := abi.Pack("address", addr); err == nil {
- t.Error("expected address of 21 width to throw")
- }
-
- slice := make([]byte, 2)
+ slice := make([]uint64, 2)
if _, err := abi.Pack("uint64[2]", slice); err != nil {
t.Error(err)
}
@@ -222,16 +210,18 @@ func TestTestSlice(t *testing.T) {
}
}
-func TestTestAddress(t *testing.T) {
+func TestImplicitTypeCasts(t *testing.T) {
abi, err := JSON(strings.NewReader(jsondata2))
if err != nil {
t.Error(err)
t.FailNow()
}
- addr := make([]byte, 20)
- if _, err := abi.Pack("address", addr); err != nil {
- t.Error(err)
+ slice := make([]uint8, 2)
+ _, err = abi.Pack("uint64[2]", slice)
+ expStr := "`uint64[2]` abi: cannot use type uint8 as type uint64"
+ if err.Error() != expStr {
+ t.Errorf("expected %v, got %v", expStr, err)
}
}
@@ -310,44 +300,69 @@ func TestPackSlice(t *testing.T) {
}
sig := crypto.Keccak256([]byte("slice(uint32[2])"))[:4]
- sig = append(sig, make([]byte, 64)...)
- sig[35] = 1
- sig[67] = 2
+ sig = append(sig, common.LeftPadBytes([]byte{32}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
packed, err := abi.Pack("slice", []uint32{1, 2})
if err != nil {
t.Error(err)
- t.FailNow()
}
if !bytes.Equal(packed, sig) {
t.Errorf("expected %x got %x", sig, packed)
}
-}
-func TestPackSliceBig(t *testing.T) {
- abi, err := JSON(strings.NewReader(jsondata2))
+ var addrA, addrB = common.Address{1}, common.Address{2}
+ sig = abi.Methods["sliceAddress"].Id()
+ sig = append(sig, common.LeftPadBytes([]byte{32}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
+ sig = append(sig, common.LeftPadBytes(addrA[:], 32)...)
+ sig = append(sig, common.LeftPadBytes(addrB[:], 32)...)
+
+ packed, err = abi.Pack("sliceAddress", []common.Address{addrA, addrB})
if err != nil {
- t.Error(err)
- t.FailNow()
+ t.Fatal(err)
+ }
+ if !bytes.Equal(packed, sig) {
+ t.Errorf("expected %x got %x", sig, packed)
}
- sig := crypto.Keccak256([]byte("slice256(uint256[2])"))[:4]
- sig = append(sig, make([]byte, 64)...)
- sig[35] = 1
- sig[67] = 2
+ var addrC, addrD = common.Address{3}, common.Address{4}
+ sig = abi.Methods["sliceMultiAddress"].Id()
+ sig = append(sig, common.LeftPadBytes([]byte{64}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{160}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
+ sig = append(sig, common.LeftPadBytes(addrA[:], 32)...)
+ sig = append(sig, common.LeftPadBytes(addrB[:], 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
+ sig = append(sig, common.LeftPadBytes(addrC[:], 32)...)
+ sig = append(sig, common.LeftPadBytes(addrD[:], 32)...)
- packed, err := abi.Pack("slice256", []*big.Int{big.NewInt(1), big.NewInt(2)})
+ packed, err = abi.Pack("sliceMultiAddress", []common.Address{addrA, addrB}, []common.Address{addrC, addrD})
+ if err != nil {
+ t.Fatal(err)
+ }
+ if !bytes.Equal(packed, sig) {
+ t.Errorf("expected %x got %x", sig, packed)
+ }
+
+ sig = crypto.Keccak256([]byte("slice256(uint256[2])"))[:4]
+ sig = append(sig, common.LeftPadBytes([]byte{32}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...)
+ sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...)
+
+ packed, err = abi.Pack("slice256", []*big.Int{big.NewInt(1), big.NewInt(2)})
if err != nil {
t.Error(err)
- t.FailNow()
}
if !bytes.Equal(packed, sig) {
t.Errorf("expected %x got %x", sig, packed)
}
}
-
func ExampleJSON() {
const definition = `[{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"isBar","outputs":[{"name":"","type":"bool"}],"type":"function"}]`
@@ -370,7 +385,7 @@ func TestInputVariableInputLength(t *testing.T) {
{ "type" : "function", "name" : "strOne", "const" : true, "inputs" : [ { "name" : "str", "type" : "string" } ] },
{ "type" : "function", "name" : "bytesOne", "const" : true, "inputs" : [ { "name" : "str", "type" : "bytes" } ] },
{ "type" : "function", "name" : "strTwo", "const" : true, "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "str1", "type" : "string" } ] }
-]`
+ ]`
abi, err := JSON(strings.NewReader(definition))
if err != nil {
@@ -493,35 +508,6 @@ func TestInputVariableInputLength(t *testing.T) {
}
}
-func TestBytes(t *testing.T) {
- const definition = `[
- { "type" : "function", "name" : "balance", "const" : true, "inputs" : [ { "name" : "address", "type" : "bytes20" } ] },
- { "type" : "function", "name" : "send", "const" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }
-]`
-
- abi, err := JSON(strings.NewReader(definition))
- if err != nil {
- t.Fatal(err)
- }
- ok := make([]byte, 20)
- _, err = abi.Pack("balance", ok)
- if err != nil {
- t.Error(err)
- }
-
- toosmall := make([]byte, 19)
- _, err = abi.Pack("balance", toosmall)
- if err != nil {
- t.Error(err)
- }
-
- toobig := make([]byte, 21)
- _, err = abi.Pack("balance", toobig)
- if err == nil {
- t.Error("expected error")
- }
-}
-
func TestDefaultFunctionParsing(t *testing.T) {
const definition = `[{ "name" : "balance" }]`
@@ -713,12 +699,15 @@ func TestUnmarshal(t *testing.T) {
{ "name" : "bytes", "const" : false, "outputs": [ { "type": "bytes" } ] },
{ "name" : "fixed", "const" : false, "outputs": [ { "type": "bytes32" } ] },
{ "name" : "multi", "const" : false, "outputs": [ { "type": "bytes" }, { "type": "bytes" } ] },
+ { "name" : "addressSliceSingle", "const" : false, "outputs": [ { "type": "address[]" } ] },
+ { "name" : "addressSliceDouble", "const" : false, "outputs": [ { "name": "a", "type": "address[]" }, { "name": "b", "type": "address[]" } ] },
{ "name" : "mixedBytes", "const" : true, "outputs": [ { "name": "a", "type": "bytes" }, { "name": "b", "type": "bytes32" } ] }]`
abi, err := JSON(strings.NewReader(definition))
if err != nil {
t.Fatal(err)
}
+ buff := new(bytes.Buffer)
// marshal int
var Int *big.Int
@@ -743,7 +732,6 @@ func TestUnmarshal(t *testing.T) {
}
// marshal dynamic bytes max length 32
- buff := new(bytes.Buffer)
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
bytesOut := common.RightPadBytes([]byte("hello"), 32)
@@ -862,4 +850,71 @@ func TestUnmarshal(t *testing.T) {
if !bytes.Equal(fixed, out[1].([]byte)) {
t.Errorf("expected %x, got %x", fixed, out[1])
}
+
+ // marshal address slice
+ buff.Reset()
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) // offset
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // size
+ buff.Write(common.Hex2Bytes("0000000000000000000000000100000000000000000000000000000000000000"))
+
+ var outAddr []common.Address
+ err = abi.Unpack(&outAddr, "addressSliceSingle", buff.Bytes())
+ if err != nil {
+ t.Fatal("didn't expect error:", err)
+ }
+
+ if len(outAddr) != 1 {
+ t.Fatal("expected 1 item, got", len(outAddr))
+ }
+
+ if outAddr[0] != (common.Address{1}) {
+ t.Errorf("expected %x, got %x", common.Address{1}, outAddr[0])
+ }
+
+ // marshal multiple address slice
+ buff.Reset()
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) // offset
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000080")) // offset
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // size
+ buff.Write(common.Hex2Bytes("0000000000000000000000000100000000000000000000000000000000000000"))
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // size
+ buff.Write(common.Hex2Bytes("0000000000000000000000000200000000000000000000000000000000000000"))
+ buff.Write(common.Hex2Bytes("0000000000000000000000000300000000000000000000000000000000000000"))
+
+ var outAddrStruct struct {
+ A []common.Address
+ B []common.Address
+ }
+ err = abi.Unpack(&outAddrStruct, "addressSliceDouble", buff.Bytes())
+ if err != nil {
+ t.Fatal("didn't expect error:", err)
+ }
+
+ if len(outAddrStruct.A) != 1 {
+ t.Fatal("expected 1 item, got", len(outAddrStruct.A))
+ }
+
+ if outAddrStruct.A[0] != (common.Address{1}) {
+ t.Errorf("expected %x, got %x", common.Address{1}, outAddrStruct.A[0])
+ }
+
+ if len(outAddrStruct.B) != 2 {
+ t.Fatal("expected 1 item, got", len(outAddrStruct.B))
+ }
+
+ if outAddrStruct.B[0] != (common.Address{2}) {
+ t.Errorf("expected %x, got %x", common.Address{2}, outAddrStruct.B[0])
+ }
+ if outAddrStruct.B[1] != (common.Address{3}) {
+ t.Errorf("expected %x, got %x", common.Address{3}, outAddrStruct.B[1])
+ }
+
+ // marshal invalid address slice
+ buff.Reset()
+ buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000100"))
+
+ err = abi.Unpack(&outAddr, "addressSliceSingle", buff.Bytes())
+ if err == nil {
+ t.Fatal("expected error:", err)
+ }
}
diff --git a/accounts/abi/numbers.go b/accounts/abi/numbers.go
index 02609d567..084701de5 100644
--- a/accounts/abi/numbers.go
+++ b/accounts/abi/numbers.go
@@ -117,8 +117,6 @@ func packNum(value reflect.Value, to byte) []byte {
// checks whether the given reflect value is signed. This also works for slices with a number type
func isSigned(v reflect.Value) bool {
switch v.Type() {
- case ubig_ts, big_ts, big_t, ubig_t:
- return true
case int_ts, int8_ts, int16_ts, int32_ts, int64_ts, int_t, int8_t, int16_t, int32_t, int64_t:
return true
}
diff --git a/accounts/abi/numbers_test.go b/accounts/abi/numbers_test.go
index 78dc57543..6590e41a6 100644
--- a/accounts/abi/numbers_test.go
+++ b/accounts/abi/numbers_test.go
@@ -81,8 +81,4 @@ func TestSigned(t *testing.T) {
if !isSigned(reflect.ValueOf(int(10))) {
t.Error()
}
-
- if !isSigned(reflect.ValueOf(big.NewInt(10))) {
- t.Error()
- }
}
diff --git a/accounts/abi/type.go b/accounts/abi/type.go
index c08b744f7..5a5a5ac49 100644
--- a/accounts/abi/type.go
+++ b/accounts/abi/type.go
@@ -40,6 +40,9 @@ const (
// Type is the reflection of the supported argument type
type Type struct {
+ IsSlice bool
+ SliceSize int
+
Kind reflect.Kind
Type reflect.Type
Size int
@@ -47,6 +50,11 @@ type Type struct {
stringKind string // holds the unparsed string for deriving signatures
}
+var (
+ fullTypeRegex = regexp.MustCompile("([a-zA-Z0-9]+)(\\[([0-9]*)?\\])?")
+ typeRegex = regexp.MustCompile("([a-zA-Z]+)([0-9]*)?")
+)
+
// NewType returns a fully parsed Type given by the input string or an error if it can't be parsed.
//
// Strings can be in the format of:
@@ -61,98 +69,87 @@ type Type struct {
// address int256 uint256 real[2]
func NewType(t string) (typ Type, err error) {
// 1. full string 2. type 3. (opt.) is slice 4. (opt.) size
- freg, err := regexp.Compile("([a-zA-Z0-9]+)(\\[([0-9]*)?\\])?")
- if err != nil {
- return Type{}, err
- }
- res := freg.FindAllStringSubmatch(t, -1)[0]
- var (
- isslice bool
- size int
- )
+ // parse the full representation of the abi-type definition; including:
+ // * full string
+ // * type
+ // * is slice
+ // * slice size
+ res := fullTypeRegex.FindAllStringSubmatch(t, -1)[0]
+
+ // check if type is slice and parse type.
switch {
case res[3] != "":
// err is ignored. Already checked for number through the regexp
- size, _ = strconv.Atoi(res[3])
- isslice = true
+ typ.SliceSize, _ = strconv.Atoi(res[3])
+ typ.IsSlice = true
case res[2] != "":
- isslice = true
- size = -1
+ typ.IsSlice, typ.SliceSize = true, -1
case res[0] == "":
- return Type{}, fmt.Errorf("type parse error for `%s`", t)
+ return Type{}, fmt.Errorf("abi: type parse error: %s", t)
}
- treg, err := regexp.Compile("([a-zA-Z]+)([0-9]*)?")
- if err != nil {
- return Type{}, err
+ // parse the type and size of the abi-type.
+ parsedType := typeRegex.FindAllStringSubmatch(res[1], -1)[0]
+ // varSize is the size of the variable
+ var varSize int
+ if len(parsedType[2]) > 0 {
+ var err error
+ varSize, err = strconv.Atoi(parsedType[2])
+ if err != nil {
+ return Type{}, fmt.Errorf("abi: error parsing variable size: %v", err)
+ }
}
-
- parsedType := treg.FindAllStringSubmatch(res[1], -1)[0]
- vsize, _ := strconv.Atoi(parsedType[2])
- vtype := parsedType[1]
- // substitute canonical representation
- if vsize == 0 && (vtype == "int" || vtype == "uint") {
- vsize = 256
+ // varType is the parsed abi type
+ varType := parsedType[1]
+ // substitute canonical integer
+ if varSize == 0 && (varType == "int" || varType == "uint") {
+ varSize = 256
t += "256"
}
- 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
+ switch varType {
+ case "int":
+ typ.Kind = reflect.Int
+ typ.Type = big_t
+ typ.Size = varSize
+ typ.T = IntTy
+ case "uint":
+ typ.Kind = reflect.Uint
+ typ.Type = ubig_t
+ typ.Size = varSize
+ typ.T = UintTy
+ case "bool":
+ typ.Kind = reflect.Bool
+ typ.T = BoolTy
+ case "real": // TODO
+ typ.Kind = reflect.Invalid
+ case "address":
+ typ.Type = address_t
+ typ.Size = 20
+ typ.T = AddressTy
+ case "string":
+ typ.Kind = reflect.String
+ typ.Size = -1
+ typ.T = StringTy
+ if varSize > 0 {
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)
}
+ case "hash":
+ typ.Kind = reflect.Array
+ typ.Size = 32
+ typ.Type = hash_t
+ typ.T = HashTy
+ case "bytes":
+ typ.Kind = reflect.Array
+ typ.Type = byte_ts
+ typ.Size = varSize
+ if varSize == 0 {
+ typ.T = BytesTy
+ } else {
+ typ.T = FixedBytesTy
+ }
+ default:
+ return Type{}, fmt.Errorf("unsupported arg type: %s", t)
}
typ.stringKind = t
@@ -180,14 +177,26 @@ func (t Type) pack(v interface{}) ([]byte, error) {
value := reflect.ValueOf(v)
switch kind := value.Kind(); kind {
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+ // check input is unsigned
if t.Type != ubig_t {
- return nil, fmt.Errorf("type mismatch: %s for %T", t.Type, v)
+ return nil, fmt.Errorf("abi: type mismatch: %s for %T", t.Type, v)
+ }
+
+ // no implicit type casting
+ if int(value.Type().Size()*8) != t.Size {
+ return nil, fmt.Errorf("abi: cannot use type %T as type uint%d", v, t.Size)
}
+
return packNum(value, t.T), nil
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
if t.Type != ubig_t {
return nil, fmt.Errorf("type mismatch: %s for %T", t.Type, v)
}
+
+ // no implicit type casting
+ if int(value.Type().Size()*8) != t.Size {
+ return nil, fmt.Errorf("abi: cannot use type %T as type uint%d", v, t.Size)
+ }
return packNum(value, t.T), nil
case reflect.Ptr:
// If the value is a ptr do a assign check (only used by
@@ -203,30 +212,29 @@ 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
}
- if t.Size > -1 && value.Len() > t.Size {
+ if t.SliceSize > -1 && value.Len() > t.SliceSize {
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
generated by cgit (git 2.34.1) at 2024-10-17 20:24:28 +0800