arg

Documentation

Index

• Constants
• Variables
• type Arg
  • func NewArg(arg interface{}) (Arg, error)
• type Type
  • func (t Type) String() string
• type TypeList
  • func (list TypeList) Contains(arg Arg) bool

Constants

const (
	EventArgPrefix        = "$."
	EventDataArgPrefix    = EventArgPrefix + "data"
	EventDataSubArgPrefix = "@."
)

Variables

var (
	EventList = []Type{EventAttribute, EventData}
	All       = []Type{EventAttribute, EventData, Constant, Define}
)

var (
	ErrOperationNotSupport = fmt.Errorf("operation not support")
	ErrArgValueNil         = fmt.Errorf("arg value is nil")
)

Types

type Arg

type Arg interface {
	Type() Type
	Name() string
	Original() string
	// Evaluate arg value
	Evaluate(ceCtx *context.EventContext) (interface{}, error)
	SetValue(ceCtx *context.EventContext, v interface{}) error
	DeleteValue(ceCtx *context.EventContext) error
}

func NewArg

func NewArg(arg interface{}) (Arg, error)

type Type

type Type uint8

const (
	Constant Type = iota
	EventAttribute
	EventData
	Define
	Any
)

func (Type) String

func (t Type) String() string

type TypeList

type TypeList []Type

func (TypeList) Contains

func (list TypeList) Contains(arg Arg) bool