vm

Documentation

Index

• Constants
• Variables
• func ExecModule(name string, state *VMState) (object.Object, error)
• type Frame
  • func NewFrame(cl *object.Closure, basePointer int) *Frame
  • func (f *Frame) Instructions() code.Instructions
  • func (f *Frame) NextOp() code.Opcode
• type VM
  • func New(bytecode *compiler.Bytecode) *VM
  • func NewWithState(bytecode *compiler.Bytecode, state *VMState) *VM
  • func (vm *VM) LastPopped() object.Object
  • func (vm *VM) Run() error
• type VMState
  • func NewVMState() *VMState
  • func (s *VMState) ExportedHash() *object.Hash

Constants

const (
	StackSize  = 2048
	MaxFrames  = 1024
	MaxGlobals = 65536
)

Variables

var (
	True  = &object.Boolean{Value: true}
	False = &object.Boolean{Value: false}
	Null  = &object.Null{}
)

Functions

func ExecModule

func ExecModule(name string, state *VMState) (object.Object, error)

ExecModule compiles the named module and returns a *object.Module object

Types

type Frame

type Frame struct {
	// contains filtered or unexported fields
}

func NewFrame

func NewFrame(cl *object.Closure, basePointer int) *Frame

func (*Frame) Instructions

func (f *Frame) Instructions() code.Instructions

func (*Frame) NextOp

func (f *Frame) NextOp() code.Opcode

NextOp ...

type VM

type VM struct {
	Debug bool
	// contains filtered or unexported fields
}

func New

func New(bytecode *compiler.Bytecode) *VM

func NewWithState

func NewWithState(bytecode *compiler.Bytecode, state *VMState) *VM

func (*VM) LastPopped

func (vm *VM) LastPopped() object.Object

func (*VM) Run

func (vm *VM) Run() error

type VMState

type VMState struct {
	Constants []object.Object
	Globals   []object.Object
	Symbols   *compiler.SymbolTable
}

func NewVMState

func NewVMState() *VMState

func (*VMState) ExportedHash

func (s *VMState) ExportedHash() *object.Hash

ExportedHash returns a new Hash with the names and values of every publically exported binding in the vm state. That is every binding that starts with a capital letter. This is used by the module import system to wrap up the compiled and evaulated module into an object.