value

Documentation

Overview

Package value provides types and functions for the representation of generic values with flexible types created at runtime

Index

• Variables
• func Base64(i uint64) string
• func Checksum(s string) uint64
• func Hash(s string) string
• type Identifier
• type Number
  • func (v Number) AsNumber() (Number, bool)
  • func (v Number) AsStep() (Step, bool)
  • func (v Number) AsText() (Text, bool)
  • func (v Number) GoString() string
  • func (v Number) IsEmpty() bool
  • func (v Number) IsTerminal() bool
  • func (v Number) String() string
  • func (v Number) Type() TypeCode
• type Step
• type StepCore
• type Text
  • func (v Text) AsNumber() (Number, bool)
  • func (v Text) AsStep() (Step, bool)
  • func (v Text) AsText() (Text, bool)
  • func (v Text) GoString() string
  • func (v Text) IsEmpty() bool
  • func (v Text) IsTerminal() bool
  • func (v Text) String() string
  • func (v Text) Type() TypeCode
• type TypeCode
• type Value

Variables

var Nothing *nothing = &nothing{}

Functions

func Base64

func Base64(i uint64) string

func Checksum

func Checksum(s string) uint64

func Hash

func Hash(s string) string

Types

type Identifier

type Identifier = uint64

type Number

type Number int64

func (Number) AsNumber

func (v Number) AsNumber() (Number, bool)

func (Number) AsStep

func (v Number) AsStep() (Step, bool)

func (Number) AsText

func (v Number) AsText() (Text, bool)

func (Number) GoString

func (v Number) GoString() string

func (Number) IsEmpty

func (v Number) IsEmpty() bool

func (Number) IsTerminal

func (v Number) IsTerminal() bool

func (Number) String

func (v Number) String() string

func (Number) Type

func (v Number) Type() TypeCode

type Step

type Step interface {
	StepCore
	Value
}

interface Step, type step: a semantic (RDF-like) triple, representing a statment of the form <subject>, <predicate>, <object>. Implementations of Step are in packages schema/graph and storage/graph

type StepCore

type StepCore interface {
	Item() Step
	Property() Step
	Value() Value
	Id() Identifier
}

type Text

type Text string

func (Text) AsNumber

func (v Text) AsNumber() (Number, bool)

func (Text) AsStep

func (v Text) AsStep() (Step, bool)

func (Text) AsText

func (v Text) AsText() (Text, bool)

func (Text) GoString

func (v Text) GoString() string

func (Text) IsEmpty

func (v Text) IsEmpty() bool

func (Text) IsTerminal

func (v Text) IsTerminal() bool

func (Text) String

func (v Text) String() string

func (Text) Type

func (v Text) Type() TypeCode

type TypeCode

type TypeCode byte

const (
	TC_nothing TypeCode = iota
	TC_text
	TC_number
	TC_step
)

type Value

type Value interface {
	IsEmpty() bool
	IsTerminal() bool
	Type() TypeCode
	AsNumber() (Number, bool)
	AsText() (Text, bool)
	AsStep() (Step, bool)
	String() string
	GoString() string
}