More State constructors

state.go

@@ -19,8 +19,14 @@ type State struct {
 	stack            []*StackFrame
 }
 
-func NewState(byteCodes [][]byte) (*State, error) {
-	state := &State{}
+func NewState(functions [][]*Instruction) (*State, error) {
+	return &State{
+		functions: functions,
+	}, nil
+}
+
+func NewStateFromByteCode(byteCodes [][]byte) (*State, error) {
+	functions := [][]*Instruction{}
 
 	for i, byteCode := range byteCodes {
 		instrs, err := NewInstructionsFromByteCode(byteCode)
@@ -28,10 +34,10 @@ func NewState(byteCodes [][]byte) (*State, error) {
 			return nil, errors.Wrapf(err, "At function index %d", i)
 		}
 
-		state.functions = append(state.functions, instrs)
+		functions = append(functions, instrs)
 	}
 
-	return state, nil
+	return NewState(functions)
 }
 
 func (state *State) Execute() {