runtime

Documentation

Index

• Constants
• Variables
• type Frame
• type VM
  • func NewVM(bytecode *compiler.Bytecode, globals []*objects.Object) *VM
  • func (v *VM) Abort()
  • func (v *VM) FrameInfo() (frameIndex, ip int)
  • func (v *VM) Globals() []*objects.Object
  • func (v *VM) Run() error

Constants

const (
	// StackSize is the maximum stack size.
	StackSize = 2048

	// GlobalsSize is the maximum number of global variables.
	GlobalsSize = 1024

	// MaxFrames is the maximum number of function frames.
	MaxFrames = 1024
)

Variables

var ErrStackOverflow = errors.New("stack overflow")

ErrStackOverflow is a stack overflow error.

Types

type Frame

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

Frame represents a function call frame.

type VM

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

VM is a virtual machine that executes the bytecode compiled by Compiler.

func NewVM

func NewVM(bytecode *compiler.Bytecode, globals []*objects.Object) *VM

NewVM creates a VM.

func (*VM) Abort

func (v *VM) Abort()

Abort aborts the execution.

func (*VM) FrameInfo

func (v *VM) FrameInfo() (frameIndex, ip int)

FrameInfo returns the current function call frame information.

func (*VM) Globals

func (v *VM) Globals() []*objects.Object

Globals returns the global variables.

func (*VM) Run

func (v *VM) Run() error

Run starts the execution.