Split code for contracts

ethchain/closure.go

@@ -12,18 +12,18 @@ type Callee interface {
 	Address() []byte
 }
 
-type ClosureBody interface {
+type Reference interface {
 	Callee
 	ethutil.RlpEncodable
 	GetMem(*big.Int) *ethutil.Value
 	SetMem(*big.Int, *ethutil.Value)
-	GetInstr(*big.Int) *ethutil.Value
 }
 
 // Basic inline closure object which implement the 'closure' interface
 type Closure struct {
 	callee Callee
-	object ClosureBody
+	object Reference
+	Script []byte
 	State  *State
 
 	Gas   *big.Int
@@ -33,8 +33,8 @@ type Closure struct {
 }
 
 // Create a new closure for the given data items
-func NewClosure(callee Callee, object ClosureBody, state *State, gas, val *big.Int) *Closure {
-	return &Closure{callee, object, state, gas, val, nil}
+func NewClosure(callee Callee, object Reference, script []byte, state *State, gas, val *big.Int) *Closure {
+	return &Closure{callee, object, script, state, gas, val, nil}
 }
 
 // Retuns the x element in data slice
@@ -47,8 +47,14 @@ func (c *Closure) GetMem(x *big.Int) *ethutil.Value {
 	return m
 }
 
-func (c *Closure) GetInstr(x *big.Int) *ethutil.Value {
-	return c.object.GetInstr(x)
+func (c *Closure) Get(x *big.Int) *ethutil.Value {
+	return c.Gets(x, big.NewInt(1))
+}
+
+func (c *Closure) Gets(x, y *big.Int) *ethutil.Value {
+	partial := c.Script[x.Int64() : x.Int64()+y.Int64()]
+
+	return ethutil.NewValue(partial)
 }
 
 func (c *Closure) SetMem(x *big.Int, val *ethutil.Value) {
@@ -86,7 +92,7 @@ func (c *Closure) ReturnGas(gas *big.Int, state *State) {
 	c.Gas.Add(c.Gas, gas)
 }
 
-func (c *Closure) Object() ClosureBody {
+func (c *Closure) Object() Reference {
 	return c.object
 }
 

ethchain/contract.go

@@ -9,9 +9,10 @@ type Contract struct {
 	Amount *big.Int
 	Nonce  uint64
 	//state  *ethutil.Trie
-	state   *State
-	address []byte
-	script  []byte
+	state      *State
+	address    []byte
+	script     []byte
+	initScript []byte
 }
 
 func NewContract(address []byte, Amount *big.Int, root []byte) *Contract {
@@ -88,12 +89,17 @@ func MakeContract(tx *Transaction, state *State) *Contract {
 		value := tx.Value
 		contract := NewContract(addr, value, []byte(""))
 		state.trie.Update(string(addr), string(contract.RlpEncode()))
-		for i, val := range tx.Data {
-			if len(val) > 0 {
-				bytNum := ethutil.BigToBytes(big.NewInt(int64(i)), 256)
-				contract.state.trie.Update(string(bytNum), string(ethutil.Encode(val)))
+		contract.script = tx.Data
+		contract.initScript = tx.Init
+
+		/*
+			for i, val := range tx.Data {
+					if len(val) > 0 {
+						bytNum := ethutil.BigToBytes(big.NewInt(int64(i)), 256)
+						contract.state.trie.Update(string(bytNum), string(ethutil.Encode(val)))
+					}
 			}
-		}
+		*/
 		state.trie.Update(string(addr), string(contract.RlpEncode()))
 
 		return contract

ethchain/state_manager.go

@@ -311,7 +311,7 @@ func (sm *StateManager) ProcessContract(contract *Contract, tx *Transaction, blo
 	}()
 
 	caller := sm.procState.GetAccount(tx.Sender())
-	closure := NewClosure(caller, contract, sm.procState, tx.Gas, tx.Value)
+	closure := NewClosure(caller, contract, contract.script, sm.procState, tx.Gas, tx.Value)
 	vm := NewVm(sm.procState, RuntimeVars{
 		origin:      caller.Address(),
 		blockNumber: block.BlockInfo().Number,

ethchain/vm.go

@@ -72,7 +72,7 @@ func (vm *Vm) RunClosure(closure *Closure) []byte {
 	for {
 		step++
 		// Get the memory location of pc
-		val := closure.GetInstr(pc)
+		val := closure.Get(pc)
 		// Get the opcode (it must be an opcode!)
 		op := OpCode(val.Uint())
 		if ethutil.Config.Debug {
@@ -357,7 +357,7 @@ func (vm *Vm) RunClosure(closure *Closure) []byte {
 			// Fetch the contract which will serve as the closure body
 			contract := vm.state.GetContract(addr.Bytes())
 			// Create a new callable closure
-			closure := NewClosure(closure, contract, vm.state, gas, value)
+			closure := NewClosure(closure, contract, contract.script, vm.state, gas, value)
 			// Executer the closure and get the return value (if any)
 			ret := closure.Call(vm, args)
 

ethchain/vm_test.go

@@ -112,7 +112,8 @@ func TestRun4(t *testing.T) {
 
 	// Contract addr as test address
 	account := NewAccount(ContractAddr, big.NewInt(10000000))
-	callerClosure := NewClosure(account, MakeContract(callerTx, state), state, big.NewInt(1000000000), new(big.Int))
+	c := MakeContract(callerTx, state)
+	callerClosure := NewClosure(account, c, c.script, state, big.NewInt(1000000000), new(big.Int))
 
 	vm := NewVm(state, RuntimeVars{
 		origin:      account.Address(),