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`.

2 files changed, 11 insertions, 11 deletions

diff --git a/eth/filters/filter.go b/eth/filters/filter.go
index b7f795607..0b4911629 100644
--- a/eth/filters/filter.go
+++ b/eth/filters/filter.go
@@ -21,8 +21,8 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
-	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
 )
 
 type AccountChange struct {
@@ -39,9 +39,9 @@ type Filter struct {
 	max      int
 	topics   [][]common.Hash
 
-	BlockCallback       func(*types.Block, state.Logs)
+	BlockCallback       func(*types.Block, vm.Logs)
 	TransactionCallback func(*types.Transaction)
-	LogsCallback        func(state.Logs)
+	LogsCallback        func(vm.Logs)
 }
 
 // Create a new filter which uses a bloom filter on blocks to figure out whether a particular block
@@ -78,7 +78,7 @@ func (self *Filter) SetSkip(skip int) {
 }
 
 // Run filters logs with the current parameters set
-func (self *Filter) Find() state.Logs {
+func (self *Filter) Find() vm.Logs {
 	earliestBlock := core.GetCurrentBlock(self.db)
 	var earliestBlockNo uint64 = uint64(self.earliest)
 	if self.earliest == -1 {
@@ -90,7 +90,7 @@ func (self *Filter) Find() state.Logs {
 	}
 
 	var (
-		logs  state.Logs
+		logs  vm.Logs
 		block = core.GetBlockByNumber(self.db, latestBlockNo)
 	)
 
@@ -112,7 +112,7 @@ done:
 			// Get the logs of the block
 			var (
 				receipts   = core.GetBlockReceipts(self.db, block.Hash())
-				unfiltered state.Logs
+				unfiltered vm.Logs
 			)
 			for _, receipt := range receipts {
 				unfiltered = append(unfiltered, receipt.Logs()...)
@@ -138,8 +138,8 @@ func includes(addresses []common.Address, a common.Address) bool {
 	return false
 }
 
-func (self *Filter) FilterLogs(logs state.Logs) state.Logs {
-	var ret state.Logs
+func (self *Filter) FilterLogs(logs vm.Logs) vm.Logs {
+	var ret vm.Logs
 
 	// Filter the logs for interesting stuff
 Logs:
diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go
index 9ad73a896..1c27c7be4 100644
--- a/eth/filters/filter_system.go
+++ b/eth/filters/filter_system.go
@@ -22,7 +22,7 @@ import (
 	"sync"
 
 	"github.com/ethereum/go-ethereum/core"
-	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/event"
 )
 
@@ -89,7 +89,7 @@ func (fs *FilterSystem) filterLoop() {
 		//core.PendingBlockEvent{},
 		core.ChainEvent{},
 		core.TxPreEvent{},
-		state.Logs(nil))
+		vm.Logs(nil))
 
 out:
 	for {
@@ -116,7 +116,7 @@ out:
 				}
 				fs.filterMu.RUnlock()
 
-			case state.Logs:
+			case vm.Logs:
 				fs.filterMu.RLock()
 				for _, filter := range fs.filters {
 					if filter.LogsCallback != nil {