github.com/jeffallen/go-ethereum@v1.1.4-0.20150910155051-571d3236c49c/xeth/state.go (about)

     1  // Copyright 2015 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package xeth
    18  
    19  import (
    20  	"github.com/ethereum/go-ethereum/common"
    21  	"github.com/ethereum/go-ethereum/core/state"
    22  )
    23  
    24  type State struct {
    25  	xeth  *XEth
    26  	state *state.StateDB
    27  }
    28  
    29  func NewState(xeth *XEth, statedb *state.StateDB) *State {
    30  	return &State{xeth, statedb}
    31  }
    32  
    33  func (self *State) State() *state.StateDB {
    34  	return self.state
    35  }
    36  
    37  func (self *State) Get(addr string) *Object {
    38  	return &Object{self.state.GetStateObject(common.HexToAddress(addr))}
    39  }
    40  
    41  func (self *State) SafeGet(addr string) *Object {
    42  	return &Object{self.safeGet(addr)}
    43  }
    44  
    45  func (self *State) safeGet(addr string) *state.StateObject {
    46  	object := self.state.GetStateObject(common.HexToAddress(addr))
    47  	if object == nil {
    48  		object = state.NewStateObject(common.HexToAddress(addr), self.xeth.backend.ChainDb())
    49  	}
    50  
    51  	return object
    52  }