jsmm

package
v0.0.0-...-064bbc6 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Jan 5, 2016 License: Apache-2.0 Imports: 12 Imported by: 0

README

To update the parser parser.y run the following command:

go tool yacc parser.y

To do some unit testing, run

go test

Documentation

Index

Constants

View Source 
const (

	/**/
	I_COUNT
)
View Source 
const (
	TAG = "jsmm"
)
View Source 
const UNARY = 57362

Variables

View Source 
var NullConst = &Null{}
View Source 
var Ops = [I_COUNT]Op{
	{"load_const", 4,
		func(m *Machine) *MachineException {
			m.Push(m.GetConst(m.GetIParam()))
			return nil
		}},
	{"get_global", 1,
		func(m *Machine) *MachineException {
			m.Push(&m.context)
			return nil
		}},
	{"get_index", 1,
		func(m *Machine) *MachineException {
			objectref := m.Get(-2)
			key := m.Get(-1).ToString()
			m.Pop(2)
			r, err := objectref.GetProperty(key)
			if err != nil {
				return err
			}
			m.Push(r)
			return nil
		}},
	{"set_index", 1,
		func(m *Machine) *MachineException {
			objectref := m.Get(-3)
			key := m.Get(-2).ToString()
			val := m.Get(-1)
			m.Pop(2)
			return objectref.SetProperty(key, val)
		}},
	{"array_append", 1,
		func(m *Machine) *MachineException {
			arrayref := m.Get(-2)
			val := m.Get(-1)
			m.Pop(1)
			if array, ok := arrayref.(*Array); ok {
				array.Append(val)
				return nil
			}
			return NewMachineException("array_append called on something not a table")
		}},
	{"add", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)

			if a.Type() == TypeString || b.Type() == TypeString {
				m.Push(NewString(a.ToString() + b.ToString()))
			} else {
				m.Push(NewNumber(a.ToNumber() + b.ToNumber()))
			}
			return nil
		}},
	{"sub", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2).ToNumber()
			b := m.Get(-1).ToNumber()
			m.Pop(2)
			m.Push(NewNumber(a - b))
			return nil
		}},
	{"mul", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2).ToNumber()
			b := m.Get(-1).ToNumber()
			m.Pop(2)
			m.Push(NewNumber(a * b))
			return nil
		}},
	{"div", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2).ToNumber()
			b := m.Get(-1).ToNumber()
			m.Pop(2)
			if b == 0 {
				if a == 0 {
					m.Push(NewNumber(math.NaN()))
				} else {
					m.Push(NewNumber(math.Inf(int(a))))
				}
			} else {
				m.Push(NewNumber(a / b))
			}
			return nil
		}},
	{"mod", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2).ToNumber()
			b := m.Get(-1).ToNumber()
			m.Pop(2)
			m.Push(NewNumber(math.Mod(a, b)))
			return nil
		}},
	{"equ", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			m.Push(NewBoolean(equal(a, b)))
			return nil
		}},
	{"neq", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			m.Push(NewBoolean(!equal(a, b)))
			return nil
		}},
	{"lt", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			m.Push(NewBoolean(lessThan(a, b)))
			return nil
		}},
	{"gt", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			m.Push(NewBoolean(!equal(a, b) && !lessThan(a, b)))
			return nil
		}},
	{"lte", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			m.Push(NewBoolean(lessThan(a, b) || equal(a, b)))
			return nil
		}},
	{"gte", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			m.Push(NewBoolean(!lessThan(a, b)))
			return nil
		}},
	{"and", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			if a.ToBoolean() == false {
				m.Push(a)
			} else {
				m.Push(b)
			}
			return nil
		}},
	{"or", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-2)
			b := m.Get(-1)
			m.Pop(2)
			if a.ToBoolean() == true {
				m.Push(a)
			} else {
				m.Push(b)
			}
			return nil
		}},
	{"not", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-1).ToBoolean()
			m.Pop(1)
			m.Push(NewBoolean(!a))
			return nil
		}},
	{"neg", 1,
		func(m *Machine) *MachineException {
			a := m.Get(-1).ToNumber()
			m.Pop(1)
			m.Push(NewNumber(-a))
			return nil
		}},
	{"call", 4,
		func(m *Machine) *MachineException {
			objectref := m.Get(-2)
			key := m.Get(-1).ToString()
			paramcount := m.GetIParam()
			m.Pop(1)

			functionref, err := objectref.GetProperty(key)
			if err != nil {
				return err
			}
			if functionref.Type() == TypeFunction {
				if function, ok := functionref.(*Function); ok {
					result_len, merror := function.Call(m, paramcount)
					if merror == nil {
						if result_len == 1 {
							result := m.Get(-1)
							m.Pop(paramcount + 1)
							m.Push(result)
						} else {
							m.Pop(paramcount)
						}
					}
					return merror
				}
			}
			return NewMachineException("TypeError: '%s' is not a function", key)
		}},
	{"newarray", 1,
		func(m *Machine) *MachineException {

			array := NewArray()

			m.Push(array)
			return nil
		}},
	{"newobject", 1,
		func(m *Machine) *MachineException {
			object := NewObject()
			m.Push(object)
			return nil
		}},
}

Functions

func DumpCode 

func DumpCode(w io.Writer, m *Machine)

func DumpStack 

func DumpStack(w io.Writer, m *Machine)

func ImportGlobal 

func ImportGlobal(m *Machine, name string, item interface{}) error

func IsUInt32 

func IsUInt32(s string) (uint32, bool)

func ToUInt32 

func ToUInt32(val MachineValue) uint32

func TypeOf 

func TypeOf(m MachineValue) string

Types

type Array 

type Array struct {
	Object
	// contains filtered or unexported fields
}

func NewArray 

func NewArray(init ...MachineValue) *Array

func (*Array) Append 

func (a *Array) Append(val MachineValue)

func (*Array) GetProperty 

func (a *Array) GetProperty(prop string) (MachineValue, *MachineException)

func (*Array) GetUInt32Property 

func (a *Array) GetUInt32Property(prop uint32) (MachineValue, *MachineException)

func (*Array) Push 

func (a *Array) Push(val MachineValue)

func (*Array) SetProperty 

func (a *Array) SetProperty(prop string, val MachineValue) *MachineException

func (*Array) SetUInt32Property 

func (a *Array) SetUInt32Property(prop uint32, val MachineValue) *MachineException

func (*Array) ToJSON 

func (a *Array) ToJSON() string

func (*Array) ToString 

func (a *Array) ToString() string

func (*Array) Type 

func (a *Array) Type() MachineType

type Boolean 

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

The Boolean type

func (*Boolean) GetProperty 

func (b *Boolean) GetProperty(prop string) (MachineValue, *MachineException)

func (*Boolean) SetProperty 

func (b *Boolean) SetProperty(prop string, val MachineValue) *MachineException

func (*Boolean) ToBoolean 

func (b *Boolean) ToBoolean() bool

func (*Boolean) ToJSON 

func (b *Boolean) ToJSON() string

func (*Boolean) ToNumber 

func (b *Boolean) ToNumber() float64

func (*Boolean) ToString 

func (b *Boolean) ToString() string

func (*Boolean) Type 

func (b *Boolean) Type() MachineType

type Expression 

type Expression interface {
	String() string
	Compile(m *Machine)
}

func Parse 

func Parse(s string) (Expression, error)

type ExpressionList 

type ExpressionList []Expression

func NewExpressionList 

func NewExpressionList() ExpressionList

func (ExpressionList) Append 

func (e ExpressionList) Append(i Expression) ExpressionList

func (ExpressionList) Get 

func (e ExpressionList) Get(i int) Expression

func (ExpressionList) Length 

func (e ExpressionList) Length() int

func (ExpressionList) String 

func (e ExpressionList) String() string

type Function 

type Function struct {
	Object
	// contains filtered or unexported fields
}

func NewFunction 

func NewFunction(name string, call JSFunction) *Function

func (*Function) Call 

func (f *Function) Call(m *Machine, paramcount int) (int, *MachineException)

func (*Function) ToBoolean 

func (f *Function) ToBoolean() bool

func (*Function) ToJSON 

func (f *Function) ToJSON() string

func (*Function) ToNumber 

func (f *Function) ToNumber() float64

func (*Function) ToString 

func (f *Function) ToString() string

func (*Function) Type 

func (f *Function) Type() MachineType

type JSFunction 

type JSFunction func(*Machine, *Function, int) (int, *MachineException)

type Machine 

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

func Compile 

func Compile(expr string) (*Machine, error)

func NewMachine 

func NewMachine() *Machine

func (*Machine) AddConst 

func (m *Machine) AddConst(c MachineValue) int

func (*Machine) AddI 

func (m *Machine) AddI(i byte) *Machine

func (*Machine) AddIParam 

func (m *Machine) AddIParam(i byte, p int) *Machine

func (*Machine) Call 

func (m *Machine) Call(pc int) *MachineException

func (*Machine) DebugMode 

func (m *Machine) DebugMode(debug bool)

func (*Machine) Execute 

func (m *Machine) Execute() (MachineValue, *MachineException)

func (*Machine) Get 

func (m *Machine) Get(pos int) MachineValue

func (*Machine) GetConst 

func (m *Machine) GetConst(pos int) MachineValue

func (*Machine) GetIParam 

func (m *Machine) GetIParam() int

func (*Machine) GetIParamAt 

func (m *Machine) GetIParamAt(index int) int

func (*Machine) GlobalObject 

func (m *Machine) GlobalObject() *Object

func (*Machine) Pop 

func (m *Machine) Pop(count int) int

func (*Machine) Push 

func (m *Machine) Push(e MachineValue) int

func (*Machine) Top 

func (m *Machine) Top() int

type MachineException 

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

func ArrayMax 

func ArrayMax(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func ArrayMin 

func ArrayMin(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func MatchRegexp 

func MatchRegexp(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func NewMachineException 

func NewMachineException(format string, args ...interface{}) *MachineException

func Select 

func Select(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func TimeUTC 

func TimeUTC(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func ToArray 

func ToArray(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func ToBoolean 

func ToBoolean(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func ToJSON 

func ToJSON(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func ToNumber 

func ToNumber(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func ToString 

func ToString(m *Machine, fn *Function, paramCount int) (int, *MachineException)

func (*MachineException) Error 

func (e *MachineException) Error() string

type MachineType 

type MachineType int
const (
	TypeError MachineType = iota
	TypeNull
	TypeBoolean
	TypeNumber
	TypeString
	TypeObject
	TypeArray
	TypeFunction
)

type MachineValue 

type MachineValue interface {
	Type() MachineType
	ToString() string
	ToNumber() float64
	ToBoolean() bool
	ToJSON() string
	GetProperty(prop string) (MachineValue, *MachineException)
	SetProperty(prop string, val MachineValue) *MachineException
}

func Import 

func Import(item interface{}) (MachineValue, error)

func NewBoolean 

func NewBoolean(b bool) MachineValue

func NewBooleanString 

func NewBooleanString(v string) MachineValue

func NewNull 

func NewNull() MachineValue

func NewNumber 

func NewNumber(f float64) MachineValue

func NewNumberString 

func NewNumberString(v string) MachineValue

func NewString 

func NewString(v string) MachineValue

type Null 

type Null struct{}

The null type

func (*Null) GetProperty 

func (u *Null) GetProperty(prop string) (MachineValue, *MachineException)

func (*Null) SetProperty 

func (u *Null) SetProperty(prop string, val MachineValue) *MachineException

func (*Null) ToBoolean 

func (u *Null) ToBoolean() bool

func (*Null) ToJSON 

func (u *Null) ToJSON() string

func (*Null) ToNumber 

func (u *Null) ToNumber() float64

func (*Null) ToString 

func (u *Null) ToString() string

func (*Null) Type 

func (u *Null) Type() MachineType

type Number 

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

The Number type

func (*Number) GetProperty 

func (n *Number) GetProperty(prop string) (MachineValue, *MachineException)

func (*Number) SetProperty 

func (n *Number) SetProperty(prop string, val MachineValue) *MachineException

func (*Number) ToBoolean 

func (n *Number) ToBoolean() bool

func (*Number) ToJSON 

func (n *Number) ToJSON() string

func (*Number) ToNumber 

func (n *Number) ToNumber() float64

func (*Number) ToString 

func (n *Number) ToString() string

func (*Number) Type 

func (n *Number) Type() MachineType

type Object 

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

func CreateObjectWithPrototype 

func CreateObjectWithPrototype(klass string, prototype MachineValue) Object

func NewObject 

func NewObject() *Object

func (*Object) GetProperty 

func (o *Object) GetProperty(prop string) (MachineValue, *MachineException)

func (*Object) SetProperty 

func (o *Object) SetProperty(prop string, val MachineValue) *MachineException

func (*Object) ToBoolean 

func (o *Object) ToBoolean() bool

func (*Object) ToJSON 

func (o *Object) ToJSON() string

func (*Object) ToNumber 

func (o *Object) ToNumber() float64

func (*Object) ToString 

func (o *Object) ToString() string

func (*Object) Type 

func (o *Object) Type() MachineType

type Op 

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

type ParseError 

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

func NewParseError 

func NewParseError(format string, args ...interface{}) *ParseError

func (*ParseError) Error 

func (e *ParseError) Error() string

type String 

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

The String type

func (*String) GetProperty 

func (s *String) GetProperty(prop string) (MachineValue, *MachineException)

func (*String) SetProperty 

func (s *String) SetProperty(prop string, val MachineValue) *MachineException

func (*String) ToBoolean 

func (s *String) ToBoolean() bool

func (*String) ToJSON 

func (s *String) ToJSON() string

func (*String) ToNumber 

func (s *String) ToNumber() float64

func (*String) ToString 

func (s *String) ToString() string

func (*String) Type 

func (s *String) Type() MachineType

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