package vm import ( "fmt" "github.com/CityOfZion/neo-go/pkg/vm/stack" ) // VM represents an instance of a Neo Virtual Machine type VM struct { InvocationStack stack.Invocation state vmstate } //NewVM loads in a script // uses the script to initiate a Context object // pushes the context to the invocation stack func NewVM(script []byte) *VM { ctx := stack.NewContext(script) v := &VM{ state: NONE, } v.InvocationStack.Push(ctx) return v } // ExecuteOp will execute one opcode for a given context func (v *VM) ExecuteOp(op stack.Instruction, ctx *stack.Context) error { handleOp, ok := opFunc[op] if !ok { return fmt.Errorf("unknown opcode entered %v", op) } err := handleOp(op, ctx, &v.InvocationStack) if err != nil { return err } return nil }