eval

package module

v0.0.0-...-9d89a60 Latest Latest Go to latest Published: May 3, 2015 License: MIT Imports: 8 Imported by: 5

Details

Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/goforce/eval

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Open Source Insights

README ¶

eval

simple expression evaluation

Documentation ¶

Index ¶

Constants
func GetNumber(args []interface{}, index int) *big.Rat
func GetNumberAsInt(args []interface{}, index int) int
func MinNumOfParams(args []interface{}, expected int)
func MustBeBool(args []interface{}, index int) bool
func MustBeDate(args []interface{}, index int) time.Time
func MustBeNumber(args []interface{}, index int) *big.Rat
func MustBeNumberAsInt(args []interface{}, index int) int
func MustBeString(args []interface{}, index int) string
func NewContext() *context
func NumOfParams(args []interface{}, expected int)
type Context
type Expr
type Functions
type NOFUNC
- func (e NOFUNC) Error() string
type Values

Constants ¶

View Source

const (
	EOE token = iota
	BAD
	IDENT
	STRING
	NUMBER
	BOOL
	COMMA
	LPAREN
	RPAREN
	NOT
	ADD
	SUB
	MUL
	DIV
	EQ
	NEQ
	LT
	LTE
	GT
	GTE
	AND
	OR
)

View Source

const (
	ISO8601 string = "2006-01-02T15:04:05.999Z0700"
)

Variables ¶

This section is empty.

Functions ¶

func GetNumber ¶

func GetNumber(args []interface{}, index int) *big.Rat

func GetNumberAsInt ¶

func GetNumberAsInt(args []interface{}, index int) int

func MinNumOfParams ¶

func MinNumOfParams(args []interface{}, expected int)

func MustBeBool ¶

func MustBeBool(args []interface{}, index int) bool

func MustBeDate ¶

func MustBeDate(args []interface{}, index int) time.Time

func MustBeNumber ¶

func MustBeNumber(args []interface{}, index int) *big.Rat

func MustBeNumberAsInt ¶

func MustBeNumberAsInt(args []interface{}, index int) int

func MustBeString ¶

func MustBeString(args []interface{}, index int) string

func NewContext ¶

func NewContext() *context

func NumOfParams ¶

func NumOfParams(args []interface{}, expected int)

Types ¶

type Context ¶

type Context interface {
	AddFunctions(Functions) Context
	AddValues(Values) Context
	SetTimeZone(*time.Location) Context
	ParseDate(format, value string) (time.Time, error)
	// contains filtered or unexported methods
}

type Expr ¶

type Expr interface {
	Eval(Context) (interface{}, error)
	String() string
}

func Parse ¶

func Parse(src []byte) (expr Expr, err error)

func ParseIdent ¶

func ParseIdent(name string) Expr

ParseIdent is shortcut function to get value from context

func ParseString ¶

func ParseString(src string) (expr Expr, err error)

ParseString parses string and returns expression or error

type Functions ¶

type Functions func(string, []interface{}) (interface{}, error)

type NOFUNC ¶

type NOFUNC struct{}

func (NOFUNC) Error ¶

func (e NOFUNC) Error() string

type Values ¶

type Values func(string) (interface{}, bool)

Source Files ¶

View all Source files

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