package vm import ( "errors" "fmt" "github.com/ethereum/go-ethereum/params" ) var OutOfGasError = errors.New("Out of gas") var DepthError = fmt.Errorf("Max call depth exceeded (%d)", params.CallCreateDepth) type StackError struct { req, has int } func StackErr(req, has int) StackError { return StackError{req, has} } func (self StackError) Error() string { return fmt.Sprintf("stack error! require %v, have %v", self.req, self.has) } func IsStackErr(err error) bool { _, ok := err.(StackError) return ok }