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// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library 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 go-ethereum library 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package vm
import "math/big"
type jumpSeg struct {
pos uint64
err error
gas *big.Int
}
func (j jumpSeg) do(program *Program, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
if !contract.UseGas(j.gas) {
return nil, OutOfGasError
}
if j.err != nil {
return nil, j.err
}
*pc = j.pos
return nil, nil
}
func (s jumpSeg) halts() bool { return false }
func (s jumpSeg) Op() OpCode { return 0 }
type pushSeg struct {
data []*big.Int
gas *big.Int
}
func (s pushSeg) do(program *Program, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Use the calculated gas. When insufficient gas is present, use all gas and return an
// Out Of Gas error
if !contract.UseGas(s.gas) {
return nil, OutOfGasError
}
for _, d := range s.data {
stack.push(new(big.Int).Set(d))
}
*pc += uint64(len(s.data))
return nil, nil
}
func (s pushSeg) halts() bool { return false }
func (s pushSeg) Op() OpCode { return 0 }
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