Function Validate

protocol/txvm/vm.go:100–120

Validate is the main entrypoint to txvm. It runs the given program, producing its transaction ID if it gets as far as a "finalize" instruction. Other runtime information can be inspected via callbacks, which are supplied via the Option arguments.

(prog []byte, txVersion, runlimit int64, o ...Option)

// instruction. Other runtime information can be inspected via
// callbacks, which are supplied via the Option arguments.
func Validate(prog []byte, txVersion, runlimit int64, o ...Option) (*VM, error) {
	if txVersion < 3 {
		return nil, ErrVersion
	}

	con := &contract{seed: emptySeed, program: prog, typecode: ContractCode}
	vm := &VM{
		txVersion: txVersion,
		runlimit:  runlimit,
		contract:  con,
		caller:    emptySeed,
	}

	for _, o := range o {
		o.apply(vm)
	}

	err := vm.validate(prog)
	vm.runHooks(vm.onExit)
	return vm, err
}

func (vm *VM) validate(txprog []byte) (err error) {
	defer vm.recoverError(&err)