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Merge pull request #1670 from nspcc-dev/vm/popitem

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Add POPITEM opcode
This commit is contained in:
Roman Khimov 2021-01-19 09:51:53 +03:00 committed by GitHub
commit 376c22adee
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6 changed files with 53 additions and 5 deletions
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2
pkg/compiler/codegen.go
View file

@ -852,7 +852,7 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
// This way even non-pointer struct fields will be copied.
emit.Opcodes(c.prog.BinWriter, opcode.NEWARRAY0,
opcode.DUP, opcode.ROT, opcode.APPEND,
opcode.PUSH0, opcode.PICKITEM)
opcode.POPITEM)
}
}
// Do not swap for builtin functions.

1
pkg/core/fee/opcode.go
View file

@ -195,6 +195,7 @@ var coefficients = map[opcode.Opcode]int64{
opcode.REVERSEITEMS: 1 << 13,
opcode.REMOVE: 1 << 4,
opcode.CLEARITEMS: 1 << 4,
opcode.POPITEM: 1 << 4,
opcode.ISNULL: 1 << 1,
opcode.ISTYPE: 1 << 1,
opcode.CONVERT: 1 << 11,

1
pkg/vm/opcode/opcode.go
View file

@ -212,6 +212,7 @@ const (
REVERSEITEMS Opcode = 0xD1
REMOVE Opcode = 0xD2
CLEARITEMS Opcode = 0xD3
POPITEM Opcode = 0xD4
// Types
ISNULL Opcode = 0xD8

10
pkg/vm/opcode/opcode_string.go
View file

@ -192,12 +192,13 @@ func _() {
_ = x[REVERSEITEMS-209]
_ = x[REMOVE-210]
_ = x[CLEARITEMS-211]
_ = x[POPITEM-212]
_ = x[ISNULL-216]
_ = x[ISTYPE-217]
_ = x[CONVERT-219]
}
const _Opcode_name = "PUSHINT8PUSHINT16PUSHINT32PUSHINT64PUSHINT128PUSHINT256PUSHAPUSHNULLPUSHDATA1PUSHDATA2PUSHDATA4PUSHM1PUSH0PUSH1PUSH2PUSH3PUSH4PUSH5PUSH6PUSH7PUSH8PUSH9PUSH10PUSH11PUSH12PUSH13PUSH14PUSH15PUSH16NOPJMPJMP_LJMPIFJMPIF_LJMPIFNOTJMPIFNOT_LJMPEQJMPEQ_LJMPNEJMPNE_LJMPGTJMPGT_LJMPGEJMPGE_LJMPLTJMPLT_LJMPLEJMPLE_LCALLCALL_LCALLACALLTABORTASSERTTHROWTRYTRY_LENDTRYENDTRY_LENDFINALLYRETSYSCALLDEPTHDROPNIPXDROPCLEARDUPOVERPICKTUCKSWAPROTROLLREVERSE3REVERSE4REVERSENINITSSLOTINITSLOTLDSFLD0LDSFLD1LDSFLD2LDSFLD3LDSFLD4LDSFLD5LDSFLD6LDSFLDSTSFLD0STSFLD1STSFLD2STSFLD3STSFLD4STSFLD5STSFLD6STSFLDLDLOC0LDLOC1LDLOC2LDLOC3LDLOC4LDLOC5LDLOC6LDLOCSTLOC0STLOC1STLOC2STLOC3STLOC4STLOC5STLOC6STLOCLDARG0LDARG1LDARG2LDARG3LDARG4LDARG5LDARG6LDARGSTARG0STARG1STARG2STARG3STARG4STARG5STARG6STARGNEWBUFFERMEMCPYCATSUBSTRLEFTRIGHTINVERTANDORXOREQUALNOTEQUALSIGNABSNEGATEINCDECADDSUBMULDIVMODSHLSHRNOTBOOLANDBOOLORNZNUMEQUALNUMNOTEQUALLTLTEGTGTEMINMAXWITHINPACKUNPACKNEWARRAY0NEWARRAYNEWARRAY_TNEWSTRUCT0NEWSTRUCTNEWMAPSIZEHASKEYKEYSVALUESPICKITEMAPPENDSETITEMREVERSEITEMSREMOVECLEARITEMSISNULLISTYPECONVERT"
const _Opcode_name = "PUSHINT8PUSHINT16PUSHINT32PUSHINT64PUSHINT128PUSHINT256PUSHAPUSHNULLPUSHDATA1PUSHDATA2PUSHDATA4PUSHM1PUSH0PUSH1PUSH2PUSH3PUSH4PUSH5PUSH6PUSH7PUSH8PUSH9PUSH10PUSH11PUSH12PUSH13PUSH14PUSH15PUSH16NOPJMPJMP_LJMPIFJMPIF_LJMPIFNOTJMPIFNOT_LJMPEQJMPEQ_LJMPNEJMPNE_LJMPGTJMPGT_LJMPGEJMPGE_LJMPLTJMPLT_LJMPLEJMPLE_LCALLCALL_LCALLACALLTABORTASSERTTHROWTRYTRY_LENDTRYENDTRY_LENDFINALLYRETSYSCALLDEPTHDROPNIPXDROPCLEARDUPOVERPICKTUCKSWAPROTROLLREVERSE3REVERSE4REVERSENINITSSLOTINITSLOTLDSFLD0LDSFLD1LDSFLD2LDSFLD3LDSFLD4LDSFLD5LDSFLD6LDSFLDSTSFLD0STSFLD1STSFLD2STSFLD3STSFLD4STSFLD5STSFLD6STSFLDLDLOC0LDLOC1LDLOC2LDLOC3LDLOC4LDLOC5LDLOC6LDLOCSTLOC0STLOC1STLOC2STLOC3STLOC4STLOC5STLOC6STLOCLDARG0LDARG1LDARG2LDARG3LDARG4LDARG5LDARG6LDARGSTARG0STARG1STARG2STARG3STARG4STARG5STARG6STARGNEWBUFFERMEMCPYCATSUBSTRLEFTRIGHTINVERTANDORXOREQUALNOTEQUALSIGNABSNEGATEINCDECADDSUBMULDIVMODSHLSHRNOTBOOLANDBOOLORNZNUMEQUALNUMNOTEQUALLTLTEGTGTEMINMAXWITHINPACKUNPACKNEWARRAY0NEWARRAYNEWARRAY_TNEWSTRUCT0NEWSTRUCTNEWMAPSIZEHASKEYKEYSVALUESPICKITEMAPPENDSETITEMREVERSEITEMSREMOVECLEARITEMSPOPITEMISNULLISTYPECONVERT"
var _Opcode_map = map[Opcode]string{
0: _Opcode_name[0:8],
@ -382,9 +383,10 @@ var _Opcode_map = map[Opcode]string{
209: _Opcode_name[1033:1045],
210: _Opcode_name[1045:1051],
211: _Opcode_name[1051:1061],
216: _Opcode_name[1061:1067],
217: _Opcode_name[1067:1073],
219: _Opcode_name[1073:1080],
212: _Opcode_name[1061:1068],
216: _Opcode_name[1068:1074],
217: _Opcode_name[1074:1080],
219: _Opcode_name[1080:1087],
}
func (i Opcode) String() string {

14
pkg/vm/vm.go
View file

@ -1216,6 +1216,20 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
panic("CLEARITEMS: invalid type")
}
case opcode.POPITEM:
arr := v.estack.Pop().Item()
elems := arr.Value().([]stackitem.Item)
index := len(elems) - 1
elem := elems[index]
switch item := arr.(type) {
case *stackitem.Array:
item.Remove(index)
case *stackitem.Struct:
item.Remove(index)
}
v.refs.Remove(elem)
v.estack.PushVal(elem)
case opcode.SIZE:
elem := v.estack.Pop()
// Cause there is no native (byte) item type here, hence we need to check

30
pkg/vm/vm_test.go
View file

@ -2167,6 +2167,36 @@ func TestCLEARITEMS(t *testing.T) {
})
}
func TestPOPITEM(t *testing.T) {
testPOPITEM := func(t *testing.T, item, elem, arr interface{}) {
prog := makeProgram(opcode.DUP, opcode.POPITEM)
v := load(prog)
v.estack.PushVal(item)
runVM(t, v)
require.EqualValues(t, stackitem.Make(elem), v.estack.Pop().Item())
require.EqualValues(t, stackitem.Make(arr), v.estack.Pop().Item())
}
elems := []stackitem.Item{stackitem.Make(11), stackitem.Make(31)}
t.Run("Array", func(t *testing.T) {
testPOPITEM(t, stackitem.NewArray(elems), 31, elems[:1])
})
t.Run("Struct", func(t *testing.T) {
testPOPITEM(t, stackitem.NewStruct(elems), 31, elems[:1])
})
t.Run("0-length array", func(t *testing.T) {
prog := makeProgram(opcode.NEWARRAY0, opcode.POPITEM)
v := load(prog)
checkVMFailed(t, v)
})
t.Run("primitive type", func(t *testing.T) {
prog := makeProgram(opcode.PUSH4, opcode.POPITEM)
v := load(prog)
checkVMFailed(t, v)
})
}
func TestSWAPGood(t *testing.T) {
prog := makeProgram(opcode.SWAP)
vm := load(prog)