Moved execution from vm to chain.

This moves call and create to the specified environments. Vms are no
longer re-used. Vm uses environment's Call(Code) and Create in order to
execute new contracts or transfer value between accounts.

State transition now uses the same mechanism described above.

1 files changed, 23 insertions, 0 deletions

diff --git a/chain/vm_env.go b/chain/vm_env.go
index c1911ff51..c2428c234 100644
--- a/chain/vm_env.go
+++ b/chain/vm_env.go
@@ -12,6 +12,7 @@ type VMEnv struct {
 	state *state.State
 	block *types.Block
 	tx    *types.Transaction
+	depth int
 }
 
 func NewEnv(state *state.State, tx *types.Transaction, block *types.Block) *VMEnv {
@@ -32,9 +33,31 @@ func (self *VMEnv) BlockHash() []byte     { return self.block.Hash() }
 func (self *VMEnv) Value() *big.Int       { return self.tx.Value }
 func (self *VMEnv) State() *state.State   { return self.state }
 func (self *VMEnv) GasLimit() *big.Int    { return self.block.GasLimit }
+func (self *VMEnv) Depth() int            { return self.depth }
+func (self *VMEnv) SetDepth(i int)        { self.depth = i }
 func (self *VMEnv) AddLog(log *state.Log) {
 	self.state.AddLog(log)
 }
 func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
 	return vm.Transfer(from, to, amount)
 }
+
+func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *Execution {
+	evm := vm.New(self, vm.DebugVmTy)
+
+	return NewExecution(evm, addr, data, gas, price, value)
+}
+
+func (self *VMEnv) Call(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Call(addr, me)
+}
+func (self *VMEnv) CallCode(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(me.Address(), data, gas, price, value)
+	return exe.Call(addr, me)
+}
+
+func (self *VMEnv) Create(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(me)
+}