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core: implement System.Contract.Call interop

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This commit is contained in:
Evgenii Stratonikov 2020-05-07 14:11:59 +03:00
parent 301c1b7601
commit ec900c7ff7
4 changed files with 51 additions and 14 deletions
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34
pkg/core/interop_system.go
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@ -11,6 +11,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
@ -470,6 +471,39 @@ func storageContextAsReadOnly(ic *interop.Context, v *vm.VM) error {
return nil
}
// contractCall calls a contract.
func contractCall(ic *interop.Context, v *vm.VM) error {
h := v.Estack().Pop().Bytes()
method := v.Estack().Pop().Item()
args := v.Estack().Pop().Item()
return contractCallExInternal(ic, v, h, method, args, smartcontract.All)
}
// contractCallEx calls a contract with flags.
func contractCallEx(ic *interop.Context, v *vm.VM) error {
h := v.Estack().Pop().Bytes()
method := v.Estack().Pop().Item()
args := v.Estack().Pop().Item()
flags := smartcontract.CallFlag(int32(v.Estack().Pop().BigInt().Int64()))
return contractCallExInternal(ic, v, h, method, args, flags)
}
func contractCallExInternal(ic *interop.Context, v *vm.VM, h []byte, method vm.StackItem, args vm.StackItem, _ smartcontract.CallFlag) error {
u, err := util.Uint160DecodeBytesBE(h)
if err != nil {
return errors.New("invalid contract hash")
}
script, _ := ic.GetContract(u)
if script == nil {
return errors.New("contract not found")
}
// TODO perform flags checking after #923
v.LoadScript(script)
v.Estack().PushVal(args)
v.Estack().PushVal(method)
return nil
}
// contractDestroy destroys a contract.
func contractDestroy(ic *interop.Context, v *vm.VM) error {
if ic.Trigger != trigger.Application {