cmd/evm, core/vm, test: refactored VM and core

* Moved `vm.Transfer` to `core` package and changed execution to call
`env.Transfer` instead of `core.Transfer` directly.
* core/vm: byte code VM moved to jump table instead of switch
* Moved `vm.Transfer` to `core` package and changed execution to call
  `env.Transfer` instead of `core.Transfer` directly.
* Byte code VM now shares the same code as the JITVM
* Renamed Context to Contract
* Changed initialiser of state transition & unexported methods
* Removed the Execution object and refactor `Call`, `CallCode` &
  `Create` in to their own functions instead of being methods.
* Removed the hard dep on the state for the VM. The VM now
  depends on a Database interface returned by the environment. In the
  process the core now depends less on the statedb by usage of the env
* Moved `Log` from package `core/state` to package `core/vm`.

1 files changed, 66 insertions, 0 deletions

diff --git a/core/vm/log.go b/core/vm/log.go
new file mode 100644
index 000000000..354f0ad35
--- /dev/null
+++ b/core/vm/log.go
@@ -0,0 +1,66 @@
+// Copyright 2014 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 (
+	"fmt"
+	"io"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+type Log struct {
+	Address common.Address
+	Topics  []common.Hash
+	Data    []byte
+	Number  uint64
+
+	TxHash    common.Hash
+	TxIndex   uint
+	BlockHash common.Hash
+	Index     uint
+}
+
+func NewLog(address common.Address, topics []common.Hash, data []byte, number uint64) *Log {
+	return &Log{Address: address, Topics: topics, Data: data, Number: number}
+}
+
+func (self *Log) EncodeRLP(w io.Writer) error {
+	return rlp.Encode(w, []interface{}{self.Address, self.Topics, self.Data})
+}
+
+func (self *Log) String() string {
+	return fmt.Sprintf(`log: %x %x %x %x %d %x %d`, self.Address, self.Topics, self.Data, self.TxHash, self.TxIndex, self.BlockHash, self.Index)
+}
+
+type Logs []*Log
+
+type LogForStorage Log
+
+func (self *LogForStorage) EncodeRLP(w io.Writer) error {
+	return rlp.Encode(w, []interface{}{
+		self.Address,
+		self.Topics,
+		self.Data,
+		self.Number,
+		self.TxHash,
+		self.TxIndex,
+		self.BlockHash,
+		self.Index,
+	})
+}