math

Documentation

Index

• Constants
• Variables
• type Item
  • func Parse(tokens []LexToken) Item
• type LexToken
  • func Lexer(input string) (*lexer, []LexToken)
• type NumberItem
  • func (n *NumberItem) BeClosure()
  • func (n *NumberItem) Float(vars []int) float64
  • func (n *NumberItem) Int(vars []int) int
  • func (n *NumberItem) String() string
• type OperationItem
  • func (i *OperationItem) BeClosure()
  • func (i *OperationItem) Float(vars []int) float64
  • func (i *OperationItem) Int(vars []int) int
  • func (i *OperationItem) String() string
• type Operator
  • func (o Operator) GreatThan(p Operator) bool
• type VarItem
  • func (v *VarItem) BeClosure()
  • func (v *VarItem) Float(vars []int) float64
  • func (v *VarItem) Int(vars []int) int
  • func (v *VarItem) String() string

Constants

const OperatorAdd = "+"

const OperatorDiv = "/"

const OperatorMul = "*"

const OperatorSub = "-"

const T_EOF string = "T_EOF"

const T_LCLOSURE_MARK string = "T_LCLOSURE_MARK"

const T_NUMBER_MARK string = "T_NUMBER_MARK"

const T_OPER_MARK string = "T_OPER_MARK"

const T_RCLOSURE_MARK string = "T_RCLOSURE_MARK"

const T_VAR_MARK string = "T_VAR_MARK"

Variables

var EOF string = "+++EOF+++"

EOF character

Types

type Item

type Item interface {
	Int([]int) int
	Float([]int) float64

	BeClosure()

	String() string
	// contains filtered or unexported methods
}

func Parse

func Parse(tokens []LexToken) Item

Parse creates a new parser with the recommended parameters.

type LexToken

type LexToken [3]string

LexToken holds is a (type, value) array.

func Lexer

func Lexer(input string) (*lexer, []LexToken)

Lexer creates a new scanner for the input string.

type NumberItem

type NumberItem struct {
	Number interface{}
}

func (*NumberItem) BeClosure

func (n *NumberItem) BeClosure()

func (*NumberItem) Float

func (n *NumberItem) Float(vars []int) float64

func (*NumberItem) Int

func (n *NumberItem) Int(vars []int) int

func (*NumberItem) String

func (n *NumberItem) String() string

type OperationItem

type OperationItem struct {
	FirstItem  Item
	Operator   Operator
	SecondItem Item
	// contains filtered or unexported fields
}

func (*OperationItem) BeClosure

func (i *OperationItem) BeClosure()

func (*OperationItem) Float

func (i *OperationItem) Float(vars []int) float64

func (*OperationItem) Int

func (i *OperationItem) Int(vars []int) int

func (*OperationItem) String

func (i *OperationItem) String() string

type Operator

type Operator string

func (Operator) GreatThan

func (o Operator) GreatThan(p Operator) bool

type VarItem

type VarItem struct {
	Serial int
}

func (*VarItem) BeClosure

func (v *VarItem) BeClosure()

func (*VarItem) Float

func (v *VarItem) Float(vars []int) float64

func (*VarItem) Int

func (v *VarItem) Int(vars []int) int

func (*VarItem) String

func (v *VarItem) String() string