github.com/igggame/nebulas-go@v2.1.0+incompatible/nf/nvm/engine.go (about)

     1  // Copyright (C) 2017 go-nebulas authors
     2  //
     3  // This file is part of the go-nebulas library.
     4  //
     5  // the go-nebulas library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // the go-nebulas library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU General Public License
    16  // along with the go-nebulas library.  If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  
    19  package nvm
    20  
    21  import (
    22  	"github.com/nebulasio/go-nebulas/core"
    23  	"github.com/nebulasio/go-nebulas/core/state"
    24  )
    25  
    26  // NebulasVM type of NebulasVM
    27  type NebulasVM struct{}
    28  
    29  // NewNebulasVM create new NebulasVM
    30  func NewNebulasVM() core.NVM {
    31  	return &NebulasVM{}
    32  }
    33  
    34  // CreateEngine start engine
    35  func (nvm *NebulasVM) CreateEngine(block *core.Block, tx *core.Transaction, contract state.Account, state core.WorldState) (core.SmartContractEngine, error) {
    36  	ctx, err := NewContext(block, tx, contract, state)
    37  	if err != nil {
    38  		return nil, err
    39  	}
    40  	return NewV8Engine(ctx), nil
    41  }
    42  
    43  // CheckV8Run to check V8 env is OK
    44  func (nvm *NebulasVM) CheckV8Run() error {
    45  	engine := NewV8Engine(&Context{
    46  		block:    core.MockBlock(nil, 1),
    47  		contract: state.MockAccount("1.0.0"),
    48  		tx:       nil,
    49  		state:    nil,
    50  	})
    51  	_, err := engine.RunScriptSource("", 0)
    52  	engine.Dispose()
    53  	return err
    54  }