Struct VM

protocol/txvm/vm.go:18–52

VM is a virtual machine for executing Chain Protocol transactions.

// VM is a virtual machine for executing Chain Protocol transactions.
type VM struct {
	// Config/setup fields
	txVersion         int64
	runlimit          int64
	extension         bool
	stopAfterFinalize bool
	onFinalize        []func(*VM)
	onLog             []func(*VM)
	beforeStep        []func(*VM)
	afterStep         []func(*VM)
	onExit            []func(*VM)

	// Runtime fields
	argstack  stack
	run       run // TODO(bobg): move run/runstack into txvmutil.
	runstack  []run
	unwinding bool
	contract  *contract
	caller    []byte
	data      []byte
	opcode    byte

	// Results

	// TxID is the unique id of the transaction. It is only set if
	// Finalized is true.
	TxID [32]byte

	// Log is the record of the transaction's effects.
	Log []Tuple

	// Finalized is true if and only if the finalize instruction was
	// executed.
	Finalized bool
}

var (
	// ErrResidue is produced by Validate when execution leaves the