opt

Documentation

Index

• Constants
• func MatchArgument(name string, args ...*LogicalExpression) error
• func MatchOneArgument(name string, args ...*LogicalExpression) error
• func MatchTwoArgument(name string, args ...*LogicalExpression) error
• type Argument
  • func NewArgument(v interface{}) (*Argument, error)
  • func NewArgumentWithType(v interface{}, t reflect.Kind) *Argument
  • func (arg *Argument) Equal(other *Argument) bool
  • func (arg *Argument) Float64() (float64, error)
  • func (arg *Argument) Int() (int, error)
  • func (arg *Argument) Int64() (int64, error)
  • func (arg *Argument) IsInteger() bool
  • func (arg *Argument) IsNan() bool
  • func (arg *Argument) IsNumber() bool
  • func (arg *Argument) String() string
• type ArgumentFunc
• type FormulaContext
  • func NewFormulaContext(options ...Option) *FormulaContext
• type Function
• type LogicalExpression
• type Option

Constants

const (
	None              = Option(1)
	IgnoreCase        = Option(2)
	NoCache           = Option(4)
	IterateParameters = Option(8)
	RoundAwayFromZero = Option(16)
)

Functions

func MatchArgument

func MatchArgument(name string, args ...*LogicalExpression) error

func MatchOneArgument

func MatchOneArgument(name string, args ...*LogicalExpression) error

func MatchTwoArgument

func MatchTwoArgument(name string, args ...*LogicalExpression) error

Types

type Argument

type Argument struct {
	Value interface{}
	Type  reflect.Kind
}

func NewArgument

func NewArgument(v interface{}) (*Argument, error)

func NewArgumentWithType

func NewArgumentWithType(v interface{}, t reflect.Kind) *Argument

func (*Argument) Equal

func (arg *Argument) Equal(other *Argument) bool

func (*Argument) Float64

func (arg *Argument) Float64() (float64, error)

func (*Argument) Int

func (arg *Argument) Int() (int, error)

func (*Argument) Int64

func (arg *Argument) Int64() (int64, error)

func (*Argument) IsInteger

func (arg *Argument) IsInteger() bool

func (*Argument) IsNan

func (arg *Argument) IsNan() bool

func (*Argument) IsNumber

func (arg *Argument) IsNumber() bool

func (*Argument) String

func (arg *Argument) String() string

type ArgumentFunc

type ArgumentFunc func() (interface{}, error)

type FormulaContext

type FormulaContext struct {
	Option     Option
	Parameters map[string]interface{}
	Result     bytes.Buffer
}

func NewFormulaContext

func NewFormulaContext(options ...Option) *FormulaContext

type Function

type Function interface {
	Name() string
	Evaluate(context *FormulaContext, args ...*LogicalExpression) (*Argument, error)
}

type LogicalExpression

type LogicalExpression interface {
	Evaluate(context *FormulaContext) (*Argument, error)
}

type Option

type Option int