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Merge pull request #2252 from nspcc-dev/packmap-packstruct

Browse source 
vm: add PACKMAP/PACKSTRUCT, extend UNPACK
This commit is contained in:
Roman Khimov 2021-11-12 18:25:54 +03:00 committed by GitHub
commit b31a8d750e
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 172 additions and 80 deletions
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2
cli/nep17_test.go
View file

@ -85,7 +85,7 @@ func TestNEP17Balance(t *testing.T) {
}
e.checkNextLine(t, "^\\s*$")
addr4, err := address.StringToUint160("NU4CTk9H2fgNCuC3ZPqX4LjUX3MHt3Rh6p") // deployed verify.go contract
addr4, err := address.StringToUint160("NQ3nAdFQXzemHC9uvr4af2Ysap6aZJpqgN") // deployed verify.go contract
require.NoError(t, err)
e.checkNextLine(t, "^Account "+address.Uint160ToString(addr4))
e.checkEOF(t)

2
cli/testdata/wallet1_solo.json vendored
View file

@ -61,7 +61,7 @@
"isDefault": false
},
{
"address": "NU4CTk9H2fgNCuC3ZPqX4LjUX3MHt3Rh6p",
"address": "NQ3nAdFQXzemHC9uvr4af2Ysap6aZJpqgN",
"key": "6PYSATFztBa3CHjSR6sLAKungUEAbQUCVE16KzmaQQ38gLeYGZ9Knd5mGv",
"label": "verify",
"contract": {

43
pkg/compiler/codegen.go
View file

@ -324,14 +324,11 @@ func (c *codegen) emitDefault(t types.Type) {
}
case *types.Struct:
num := t.NumFields()
emit.Int(c.prog.BinWriter, int64(num))
emit.Opcodes(c.prog.BinWriter, opcode.NEWSTRUCT)
for i := 0; i < num; i++ {
emit.Opcodes(c.prog.BinWriter, opcode.DUP)
emit.Int(c.prog.BinWriter, int64(i))
for i := num - 1; i >= 0; i-- {
c.emitDefault(t.Field(i).Type())
emit.Opcodes(c.prog.BinWriter, opcode.SETITEM)
}
emit.Int(c.prog.BinWriter, int64(num))
emit.Opcodes(c.prog.BinWriter, opcode.PACKSTRUCT)
default:
emit.Opcodes(c.prog.BinWriter, opcode.PUSHNULL)
}
@ -1574,10 +1571,6 @@ func (c *codegen) convertSyscall(f *funcScope, expr *ast.CallExpr) {
if strings.HasPrefix(f.name, "Syscall") {
c.emitReverse(len(expr.Args) - 1)
emit.Syscall(c.prog.BinWriter, name)
// This NOP instruction is basically not needed, but if we do, we have a
// one to one matching avm file with neo-python which is very nice for debugging.
emit.Opcodes(c.prog.BinWriter, opcode.NOP)
} else {
op, err := opcode.FromString(name)
if err != nil {
@ -1796,14 +1789,14 @@ func (c *codegen) convertByteArray(elems []ast.Expr) {
}
func (c *codegen) convertMap(lit *ast.CompositeLit) {
emit.Opcodes(c.prog.BinWriter, opcode.NEWMAP)
for i := range lit.Elts {
l := len(lit.Elts)
for i := l - 1; i >= 0; i-- {
elem := lit.Elts[i].(*ast.KeyValueExpr)
emit.Opcodes(c.prog.BinWriter, opcode.DUP)
ast.Walk(c, elem.Key)
ast.Walk(c, elem.Value)
emit.Opcodes(c.prog.BinWriter, opcode.SETITEM)
ast.Walk(c, elem.Key)
}
emit.Int(c.prog.BinWriter, int64(l))
emit.Opcodes(c.prog.BinWriter, opcode.PACKMAP)
}
func (c *codegen) getStruct(typ types.Type) (*types.Struct, bool) {
@ -1827,14 +1820,6 @@ func (c *codegen) convertStruct(lit *ast.CompositeLit, ptr bool) {
return
}
emit.Opcodes(c.prog.BinWriter, opcode.NOP)
emit.Int(c.prog.BinWriter, int64(strct.NumFields()))
if ptr {
emit.Opcodes(c.prog.BinWriter, opcode.NEWARRAY)
} else {
emit.Opcodes(c.prog.BinWriter, opcode.NEWSTRUCT)
}
keyedLit := len(lit.Elts) > 0
if keyedLit {
_, ok := lit.Elts[0].(*ast.KeyValueExpr)
@ -1842,13 +1827,10 @@ func (c *codegen) convertStruct(lit *ast.CompositeLit, ptr bool) {
}
// We need to locally store all the fields, even if they are not initialized.
// We will initialize all fields to their "zero" value.
for i := 0; i < strct.NumFields(); i++ {
for i := strct.NumFields() - 1; i >= 0; i-- {
sField := strct.Field(i)
var initialized bool
emit.Opcodes(c.prog.BinWriter, opcode.DUP)
emit.Int(c.prog.BinWriter, int64(i))
if !keyedLit {
if len(lit.Elts) > i {
ast.Walk(c, lit.Elts[i])
@ -1870,7 +1852,12 @@ func (c *codegen) convertStruct(lit *ast.CompositeLit, ptr bool) {
if !initialized {
c.emitDefault(sField.Type())
}
emit.Opcodes(c.prog.BinWriter, opcode.SETITEM)
}
emit.Int(c.prog.BinWriter, int64(strct.NumFields()))
if ptr {
emit.Opcodes(c.prog.BinWriter, opcode.PACK)
} else {
emit.Opcodes(c.prog.BinWriter, opcode.PACKSTRUCT)
}
}

10
pkg/compiler/struct_test.go
View file

@ -394,6 +394,16 @@ var structTestCases = []testCase{
}`,
big.NewInt(11),
},
{
"lengthy struct default value",
`package foo
type S struct { x int; y []byte; z bool }
func Main() int {
var s S
return s.x
}`,
big.NewInt(0),
},
{
"nested selectors (complex write)",
`package foo

2
pkg/core/fee/opcode.go
View file

@ -180,6 +180,8 @@ var coefficients = [256]uint16{
opcode.MIN: 1 << 3,
opcode.MAX: 1 << 3,
opcode.WITHIN: 1 << 3,
opcode.PACKMAP: 1 << 11,
opcode.PACKSTRUCT: 1 << 11,
opcode.PACK: 1 << 11,
opcode.UNPACK: 1 << 11,
opcode.NEWARRAY0: 1 << 4,

2
pkg/vm/opcode/opcode.go
View file

@ -196,6 +196,8 @@ const (
WITHIN Opcode = 0xBB
// Advanced data structures (arrays, structures, maps).
PACKMAP Opcode = 0xBE
PACKSTRUCT Opcode = 0xBF
PACK Opcode = 0xC0
UNPACK Opcode = 0xC1
NEWARRAY0 Opcode = 0xC2

50
pkg/vm/opcode/opcode_string.go
View file

@ -176,6 +176,8 @@ func _() {
_ = x[MIN-185]
_ = x[MAX-186]
_ = x[WITHIN-187]
_ = x[PACKMAP-190]
_ = x[PACKSTRUCT-191]
_ = x[PACK-192]
_ = x[UNPACK-193]
_ = x[NEWARRAY0-194]
@ -200,7 +202,7 @@ func _() {
_ = x[CONVERT-219]
}
const _Opcode_name = "PUSHINT8PUSHINT16PUSHINT32PUSHINT64PUSHINT128PUSHINT256PUSHAPUSHNULLPUSHDATA1PUSHDATA2PUSHDATA4PUSHM1PUSH0PUSH1PUSH2PUSH3PUSH4PUSH5PUSH6PUSH7PUSH8PUSH9PUSH10PUSH11PUSH12PUSH13PUSH14PUSH15PUSH16NOPJMPJMP_LJMPIFJMPIF_LJMPIFNOTJMPIFNOT_LJMPEQJMPEQ_LJMPNEJMPNE_LJMPGTJMPGT_LJMPGEJMPGE_LJMPLTJMPLT_LJMPLEJMPLE_LCALLCALL_LCALLACALLTABORTASSERTTHROWTRYTRY_LENDTRYENDTRY_LENDFINALLYRETSYSCALLDEPTHDROPNIPXDROPCLEARDUPOVERPICKTUCKSWAPROTROLLREVERSE3REVERSE4REVERSENINITSSLOTINITSLOTLDSFLD0LDSFLD1LDSFLD2LDSFLD3LDSFLD4LDSFLD5LDSFLD6LDSFLDSTSFLD0STSFLD1STSFLD2STSFLD3STSFLD4STSFLD5STSFLD6STSFLDLDLOC0LDLOC1LDLOC2LDLOC3LDLOC4LDLOC5LDLOC6LDLOCSTLOC0STLOC1STLOC2STLOC3STLOC4STLOC5STLOC6STLOCLDARG0LDARG1LDARG2LDARG3LDARG4LDARG5LDARG6LDARGSTARG0STARG1STARG2STARG3STARG4STARG5STARG6STARGNEWBUFFERMEMCPYCATSUBSTRLEFTRIGHTINVERTANDORXOREQUALNOTEQUALSIGNABSNEGATEINCDECADDSUBMULDIVMODPOWSQRTSHLSHRNOTBOOLANDBOOLORNZNUMEQUALNUMNOTEQUALLTLEGTGEMINMAXWITHINPACKUNPACKNEWARRAY0NEWARRAYNEWARRAY_TNEWSTRUCT0NEWSTRUCTNEWMAPSIZEHASKEYKEYSVALUESPICKITEMAPPENDSETITEMREVERSEITEMSREMOVECLEARITEMSPOPITEMISNULLISTYPECONVERT"
const _Opcode_name = "PUSHINT8PUSHINT16PUSHINT32PUSHINT64PUSHINT128PUSHINT256PUSHAPUSHNULLPUSHDATA1PUSHDATA2PUSHDATA4PUSHM1PUSH0PUSH1PUSH2PUSH3PUSH4PUSH5PUSH6PUSH7PUSH8PUSH9PUSH10PUSH11PUSH12PUSH13PUSH14PUSH15PUSH16NOPJMPJMP_LJMPIFJMPIF_LJMPIFNOTJMPIFNOT_LJMPEQJMPEQ_LJMPNEJMPNE_LJMPGTJMPGT_LJMPGEJMPGE_LJMPLTJMPLT_LJMPLEJMPLE_LCALLCALL_LCALLACALLTABORTASSERTTHROWTRYTRY_LENDTRYENDTRY_LENDFINALLYRETSYSCALLDEPTHDROPNIPXDROPCLEARDUPOVERPICKTUCKSWAPROTROLLREVERSE3REVERSE4REVERSENINITSSLOTINITSLOTLDSFLD0LDSFLD1LDSFLD2LDSFLD3LDSFLD4LDSFLD5LDSFLD6LDSFLDSTSFLD0STSFLD1STSFLD2STSFLD3STSFLD4STSFLD5STSFLD6STSFLDLDLOC0LDLOC1LDLOC2LDLOC3LDLOC4LDLOC5LDLOC6LDLOCSTLOC0STLOC1STLOC2STLOC3STLOC4STLOC5STLOC6STLOCLDARG0LDARG1LDARG2LDARG3LDARG4LDARG5LDARG6LDARGSTARG0STARG1STARG2STARG3STARG4STARG5STARG6STARGNEWBUFFERMEMCPYCATSUBSTRLEFTRIGHTINVERTANDORXOREQUALNOTEQUALSIGNABSNEGATEINCDECADDSUBMULDIVMODPOWSQRTSHLSHRNOTBOOLANDBOOLORNZNUMEQUALNUMNOTEQUALLTLEGTGEMINMAXWITHINPACKMAPPACKSTRUCTPACKUNPACKNEWARRAY0NEWARRAYNEWARRAY_TNEWSTRUCT0NEWSTRUCTNEWMAPSIZEHASKEYKEYSVALUESPICKITEMAPPENDSETITEMREVERSEITEMSREMOVECLEARITEMSPOPITEMISNULLISTYPECONVERT"
var _Opcode_map = map[Opcode]string{
0: _Opcode_name[0:8],
@ -369,28 +371,30 @@ var _Opcode_map = map[Opcode]string{
185: _Opcode_name[923:926],
186: _Opcode_name[926:929],
187: _Opcode_name[929:935],
192: _Opcode_name[935:939],
193: _Opcode_name[939:945],
194: _Opcode_name[945:954],
195: _Opcode_name[954:962],
196: _Opcode_name[962:972],
197: _Opcode_name[972:982],
198: _Opcode_name[982:991],
200: _Opcode_name[991:997],
202: _Opcode_name[997:1001],
203: _Opcode_name[1001:1007],
204: _Opcode_name[1007:1011],
205: _Opcode_name[1011:1017],
206: _Opcode_name[1017:1025],
207: _Opcode_name[1025:1031],
208: _Opcode_name[1031:1038],
209: _Opcode_name[1038:1050],
210: _Opcode_name[1050:1056],
211: _Opcode_name[1056:1066],
212: _Opcode_name[1066:1073],
216: _Opcode_name[1073:1079],
217: _Opcode_name[1079:1085],
219: _Opcode_name[1085:1092],
190: _Opcode_name[935:942],
191: _Opcode_name[942:952],
192: _Opcode_name[952:956],
193: _Opcode_name[956:962],
194: _Opcode_name[962:971],
195: _Opcode_name[971:979],
196: _Opcode_name[979:989],
197: _Opcode_name[989:999],
198: _Opcode_name[999:1008],
200: _Opcode_name[1008:1014],
202: _Opcode_name[1014:1018],
203: _Opcode_name[1018:1024],
204: _Opcode_name[1024:1028],
205: _Opcode_name[1028:1034],
206: _Opcode_name[1034:1042],
207: _Opcode_name[1042:1048],
208: _Opcode_name[1048:1055],
209: _Opcode_name[1055:1067],
210: _Opcode_name[1067:1073],
211: _Opcode_name[1073:1083],
212: _Opcode_name[1083:1090],
216: _Opcode_name[1090:1096],
217: _Opcode_name[1096:1102],
219: _Opcode_name[1102:1109],
}
func (i Opcode) String() string {

2
pkg/vm/testdata/neo-vm vendored

@ -1 +1 @@
Subproject commit 72e546b176401b85a03bc4653eeb177badb42d3b
Subproject commit b18e040d2115ed2ea3c9a60ae8722a7865b38927

54
pkg/vm/vm.go
View file

@ -1061,7 +1061,23 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
v.refs.Add(val)
case opcode.PACK:
case opcode.PACKMAP:
n := toInt(v.estack.Pop().BigInt())
if n < 0 || n*2 > v.estack.Len() {
panic("invalid length")
}
items := make([]stackitem.MapElement, n)
for i := 0; i < n; i++ {
key := v.estack.Pop()
validateMapKey(key)
val := v.estack.Pop().value
items[i].Key = key.value
items[i].Value = val
}
v.estack.PushItem(stackitem.NewMapWithValue(items))
case opcode.PACKSTRUCT, opcode.PACK:
n := toInt(v.estack.Pop().BigInt())
if n < 0 || n > v.estack.Len() {
panic("OPACK: invalid length")
@ -1072,13 +1088,39 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
items[i] = v.estack.Pop().value
}
v.estack.PushItem(stackitem.NewArray(items))
var res stackitem.Item
if op == opcode.PACK {
res = stackitem.NewArray(items)
} else {
res = stackitem.NewStruct(items)
}
v.estack.PushItem(res)
case opcode.UNPACK:
a := v.estack.Pop().Array()
l := len(a)
for i := l - 1; i >= 0; i-- {
v.estack.PushItem(a[i])
e := v.estack.Pop()
var arr []stackitem.Item
var l int
switch t := e.value.(type) {
case *stackitem.Array:
arr = t.Value().([]stackitem.Item)
case *stackitem.Struct:
arr = t.Value().([]stackitem.Item)
case *stackitem.Map:
m := t.Value().([]stackitem.MapElement)
l = len(m)
for i := l - 1; i >= 0; i-- {
v.estack.PushItem(m[i].Value)
v.estack.PushItem(m[i].Key)
}
default:
panic("element is not an array/struct/map")
}
if arr != nil {
l = len(arr)
for i := l - 1; i >= 0; i-- {
v.estack.PushItem(arr[i])
}
}
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(l))))

85
pkg/vm/vm_test.go
View file

@ -1779,30 +1779,39 @@ func TestRIGHT(t *testing.T) {
}
func TestPACK(t *testing.T) {
prog := makeProgram(opcode.PACK)
t.Run("BadLen", getTestFuncForVM(prog, nil, 1))
t.Run("Good0Len", getTestFuncForVM(prog, []stackitem.Item{}, 0))
for _, op := range []opcode.Opcode{opcode.PACK, opcode.PACKSTRUCT} {
t.Run(op.String(), func(t *testing.T) {
prog := makeProgram(op)
t.Run("BadLen", getTestFuncForVM(prog, nil, 1))
t.Run("BigLen", getTestFuncForVM(prog, nil, 100500))
t.Run("Good0Len", getTestFuncForVM(prog, []stackitem.Item{}, 0))
})
}
}
func TestPACKGood(t *testing.T) {
prog := makeProgram(opcode.PACK)
elements := []int{55, 34, 42}
vm := load(prog)
// canary
vm.estack.PushVal(1)
for i := len(elements) - 1; i >= 0; i-- {
vm.estack.PushVal(elements[i])
for _, op := range []opcode.Opcode{opcode.PACK, opcode.PACKSTRUCT} {
t.Run(op.String(), func(t *testing.T) {
prog := makeProgram(op)
elements := []int{55, 34, 42}
vm := load(prog)
// canary
vm.estack.PushVal(1)
for i := len(elements) - 1; i >= 0; i-- {
vm.estack.PushVal(elements[i])
}
vm.estack.PushVal(len(elements))
runVM(t, vm)
assert.Equal(t, 2, vm.estack.Len())
a := vm.estack.Peek(0).Array()
assert.Equal(t, len(elements), len(a))
for i := 0; i < len(elements); i++ {
e := a[i].Value().(*big.Int)
assert.Equal(t, int64(elements[i]), e.Int64())
}
assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64())
})
}
vm.estack.PushVal(len(elements))
runVM(t, vm)
assert.Equal(t, 2, vm.estack.Len())
a := vm.estack.Peek(0).Array()
assert.Equal(t, len(elements), len(a))
for i := 0; i < len(elements); i++ {
e := a[i].Value().(*big.Int)
assert.Equal(t, int64(elements[i]), e.Int64())
}
assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64())
}
func TestPACK_UNPACK_MaxSize(t *testing.T) {
@ -1851,6 +1860,42 @@ func TestPACK_UNPACK_PACK_MaxSize(t *testing.T) {
assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64())
}
func TestPACKMAP_UNPACK_PACKMAP_MaxSize(t *testing.T) {
prog := makeProgram(opcode.PACKMAP, opcode.UNPACK, opcode.PACKMAP)
elements := make([]int, (MaxStackSize-2)/2)
vm := load(prog)
// canary
vm.estack.PushVal(-1)
for i := len(elements) - 1; i >= 0; i-- {
elements[i] = i
vm.estack.PushVal(i * 2)
vm.estack.PushVal(i)
}
vm.estack.PushVal(len(elements))
runVM(t, vm)
// check reference counter = 1+1+1024
assert.Equal(t, 1+1+len(elements), int(vm.refs))
assert.Equal(t, 2, vm.estack.Len())
m := vm.estack.Peek(0).value.(*stackitem.Map).Value().([]stackitem.MapElement)
assert.Equal(t, len(elements), len(m))
for i := 0; i < len(elements); i++ {
k := m[i].Key.Value().(*big.Int)
v := m[i].Value.Value().(*big.Int)
assert.Equal(t, int64(elements[i]), k.Int64())
assert.Equal(t, int64(elements[i])*2, v.Int64())
}
assert.Equal(t, int64(-1), vm.estack.Peek(1).BigInt().Int64())
}
func TestPACKMAPBadKey(t *testing.T) {
prog := makeProgram(opcode.PACKMAP)
vm := load(prog)
vm.estack.PushVal(1)
vm.estack.PushItem(stackitem.NewBuffer([]byte{1}))
vm.estack.PushVal(1)
checkVMFailed(t, vm)
}
func TestUNPACKBadNotArray(t *testing.T) {
prog := makeProgram(opcode.UNPACK)
runWithArgs(t, prog, nil, 1)