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wasmvm.go
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wasmvm.go
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2019 DNA Dev team
//
/*
* Copyright (C) 2018 The ontology Authors
* This file is part of The ontology library.
*
* The ontology is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ontology is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The ontology. If not, see <http://www.gnu.org/licenses/>.
*/
package neovm
import (
"fmt"
"github.com/DNAProject/DNA/core/utils"
"reflect"
"github.com/DNAProject/DNA/common"
"github.com/DNAProject/DNA/core/payload"
"github.com/DNAProject/DNA/core/types"
"github.com/DNAProject/DNA/vm/crossvm_codec"
vm "github.com/DNAProject/DNA/vm/neovm"
)
//neovm contract call wasmvm contract
func WASMInvoke(service *NeoVmService, engine *vm.Executor) error {
address, err := engine.EvalStack.PopAsBytes()
if err != nil {
return err
}
contractAddress, err := common.AddressParseFromBytes(address)
if err != nil {
return fmt.Errorf("invoke wasm contract:%s, address invalid", address)
}
dp, err := service.CacheDB.GetContract(contractAddress)
if err != nil {
return err
}
if dp == nil {
return fmt.Errorf("wasm contract does not exist")
}
if dp.VmType() != payload.WASMVM_TYPE {
return fmt.Errorf("not a wasm contract")
}
parambytes, err := engine.EvalStack.PopAsBytes()
if err != nil {
return err
}
list, err := crossvm_codec.DeserializeCallParam(parambytes)
if err != nil {
return err
}
params, ok := list.([]interface{})
if ok == false {
return fmt.Errorf("wasm invoke error: wrong param type:%s", reflect.TypeOf(list).String())
}
inputs, err := utils.BuildWasmVMInvokeCode(contractAddress, params)
if err != nil {
return err
}
newservice, err := service.ContextRef.NewExecuteEngine(inputs, types.InvokeWasm)
if err != nil {
return err
}
tmpRes, err := newservice.Invoke()
if err != nil {
return err
}
return engine.EvalStack.PushBytes(tmpRes.([]byte))
}