interop: move invocation counter from VM to Context

It's created for interop and used by interop, VM doesn't care.

pkg/core/interop/context.go

@@ -48,6 +48,7 @@ type Context struct {
 	Log           *zap.Logger
 	VM            *vm.VM
 	Functions     []Function
+	Invocations   map[util.Uint160]int
 	cancelFuncs   []context.CancelFunc
 	getContract   func(dao.DAO, util.Uint160) (*state.Contract, error)
 	baseExecFee   int64
@@ -73,6 +74,7 @@ func NewContext(trigger trigger.Type, bc blockchainer.Blockchainer, d dao.DAO,
 		Tx:          tx,
 		DAO:         dao,
 		Log:         log,
+		Invocations: make(map[util.Uint160]int),
 		getContract: getContract,
 		baseExecFee: baseExecFee,
 	}

pkg/core/interop/contract/call.go

@@ -118,7 +118,7 @@ func callExFromNative(ic *interop.Context, caller util.Uint160, cs *state.Contra
 	if md != nil {
 		initOff = md.Offset
 	}
-	ic.VM.Invocations[cs.Hash]++
+	ic.Invocations[cs.Hash]++
 	ic.VM.LoadNEFMethod(&cs.NEF, caller, cs.Hash, ic.VM.Context().GetCallFlags()&f,
 		hasReturn, methodOff, initOff)
 

pkg/core/interop/runtime/util.go

@@ -63,10 +63,10 @@ func GetNotifications(ic *interop.Context) error {
 // GetInvocationCounter returns how many times current contract was invoked during current tx execution.
 func GetInvocationCounter(ic *interop.Context) error {
 	currentScriptHash := ic.VM.GetCurrentScriptHash()
-	count, ok := ic.VM.Invocations[currentScriptHash]
+	count, ok := ic.Invocations[currentScriptHash]
 	if !ok {
 		count = 1
-		ic.VM.Invocations[currentScriptHash] = count
+		ic.Invocations[currentScriptHash] = count
 	}
 	ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(int64(count))))
 	return nil

pkg/core/interop/runtime/util_test.go

@@ -97,9 +97,9 @@ func TestRuntimeGetNotifications(t *testing.T) {
 }
 
 func TestRuntimeGetInvocationCounter(t *testing.T) {
-	ic := &interop.Context{VM: vm.New()}
+	ic := &interop.Context{VM: vm.New(), Invocations: make(map[util.Uint160]int)}
 	h := random.Uint160()
-	ic.VM.Invocations[h] = 42
+	ic.Invocations[h] = 42
 
 	t.Run("No invocations", func(t *testing.T) {
 		h1 := h

pkg/core/interop_system_test.go

@@ -234,7 +234,7 @@ func TestRuntimeGetInvocationCounter(t *testing.T) {
 	cs, _ := getTestContractState(bc)
 	require.NoError(t, bc.contracts.Management.PutContractState(ic.DAO, cs))
 
-	ic.VM.Invocations[hash.Hash160([]byte{2})] = 42
+	ic.Invocations[hash.Hash160([]byte{2})] = 42
 
 	t.Run("No invocations", func(t *testing.T) {
 		v.Load([]byte{1})

pkg/vm/vm.go

@@ -85,9 +85,6 @@ type VM struct {
 	LoadToken func(id int32) error
 
 	trigger trigger.Type
-
-	// Invocations is a script invocation counter.
-	Invocations map[util.Uint160]int
 }
 
 // New returns a new VM object ready to load AVM bytecode scripts.
@@ -102,7 +99,6 @@ func NewWithTrigger(t trigger.Type) *VM {
 		trigger: t,
 
 		SyscallHandler: defaultSyscallHandler,
-		Invocations:    make(map[util.Uint160]int),
 	}
 
 	initStack(&vm.istack, "invocation", nil)