GoFastExpress

package

v5.1.6 Latest Latest Go to latest Published: Jul 6, 2019 License: Apache-2.0 Imports: 7 Imported by: 0

Details

Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
Redistributable license

Redistributable licenses place minimal restrictions on how software can be used, modified, and redistributed.
Tagged version

Modules with tagged versions give importers more predictable builds.
Stable version

When a project reaches major version v1 it is considered stable.
Learn more about best practices

Repository

github.com/agui2200/gomybatis

Links

Open Source Insights

README ¶

GOFastExpress 一个快速的表达式引擎

特性

非常简单的抽象语法树
尽可能使用强制类型转换代替反射，提高性能
参数可以为nil,可以判空，return的变量必须有值或者为nil，不为指针
支持语法 + - * / == != >= <=

Documentation ¶

Index ¶

Constants
Variables
func DoCalculationAction(express string, operator Operator, a interface{}, b interface{}, ...) (interface{}, error)
func DoEqualAction(express string, operator Operator, a interface{}, b interface{}, ...) (bool, error)
func Eval(express string, operator Operator, a interface{}, b interface{}) (interface{}, error)
func EvalTakes(argNode ArgNode, arg interface{}) (interface{}, error)
func GetDeepPtr(v reflect.Value) reflect.Value
func GetDeepValue(av reflect.Value, arg interface{}) (interface{}, reflect.Value)
type ArgNode
- func (it ArgNode) Eval(env interface{}) (interface{}, error)
- func (it ArgNode) Express() string
- func (it ArgNode) Type() nodeType
type BinaryNode
- func (it BinaryNode) Eval(env interface{}) (interface{}, error)
- func (it BinaryNode) Express() string
- func (it BinaryNode) Type() nodeType
type BoolNode
- func (it BoolNode) Eval(env interface{}) (interface{}, error)
- func (it BoolNode) Express() string
- func (it BoolNode) Type() nodeType
type FloatNode
- func (it FloatNode) Eval(env interface{}) (interface{}, error)
- func (it FloatNode) Express() string
- func (it FloatNode) Type() nodeType
type IntNode
- func (it IntNode) Eval(env interface{}) (interface{}, error)
- func (it IntNode) Express() string
- func (it IntNode) Type() nodeType
type NilNode
- func (NilNode) Eval(env interface{}) (interface{}, error)
- func (it NilNode) Express() string
- func (it NilNode) Type() nodeType
type Node
- func Parser(express string) (Node, error)
type Operator
- func ParserOperators(express string) []Operator
type OptNode
- func (it OptNode) Eval(env interface{}) (interface{}, error)
- func (it OptNode) Express() string
- func (it OptNode) IsCalculationOperator() bool
- func (it OptNode) Type() nodeType
type StringNode
- func (it StringNode) Eval(env interface{}) (interface{}, error)
- func (it StringNode) Express() string
- func (it StringNode) Type() nodeType
type UIntNode
- func (it UIntNode) Eval(env interface{}) (interface{}, error)
- func (it UIntNode) Express() string
- func (it UIntNode) Type() nodeType

Constants ¶

View Source

const (
	NArg    nodeType = iota
	NString          //string 节点
	NFloat           //float节点
	NInt             //int 节点
	NUInt            //uint节点
	NBool            //bool节点
	NNil             //空节点
	NBinary          //二元计算节点
	NOpt             //操作符节点
)

Variables ¶

View Source

var NotSupportOptMap = map[string]bool{
	"=": true,
	"!": true,
	"@": true,
	"#": true,
	"$": true,
	"^": true,
	"&": true,
	"(": true,
	")": true,
	"`": true,
}

Functions ¶

func DoCalculationAction ¶

func DoCalculationAction(express string, operator Operator, a interface{}, b interface{}, av reflect.Value, bv reflect.Value) (interface{}, error)

func DoEqualAction ¶

func DoEqualAction(express string, operator Operator, a interface{}, b interface{}, av reflect.Value, bv reflect.Value) (bool, error)

func Eval ¶

func Eval(express string, operator Operator, a interface{}, b interface{}) (interface{}, error)

func EvalTakes ¶

func EvalTakes(argNode ArgNode, arg interface{}) (interface{}, error)

取值

func GetDeepPtr ¶

func GetDeepPtr(v reflect.Value) reflect.Value

func GetDeepValue ¶

func GetDeepValue(av reflect.Value, arg interface{}) (interface{}, reflect.Value)

Types ¶

type ArgNode ¶

type ArgNode struct {
	// contains filtered or unexported fields
}

参数节点

func (ArgNode) Eval ¶

func (it ArgNode) Eval(env interface{}) (interface{}, error)

func (ArgNode) Express ¶ added in v5.1.3

func (it ArgNode) Express() string

func (ArgNode) Type ¶

func (it ArgNode) Type() nodeType

type BinaryNode ¶

type BinaryNode struct {
	// contains filtered or unexported fields
}

计算节点

func (BinaryNode) Eval ¶

func (it BinaryNode) Eval(env interface{}) (interface{}, error)

func (BinaryNode) Express ¶ added in v5.1.3

func (it BinaryNode) Express() string

func (BinaryNode) Type ¶

func (it BinaryNode) Type() nodeType

type BoolNode ¶

type BoolNode struct {
	// contains filtered or unexported fields
}

值节点

func (BoolNode) Eval ¶

func (it BoolNode) Eval(env interface{}) (interface{}, error)

func (BoolNode) Express ¶ added in v5.1.3

func (it BoolNode) Express() string

func (BoolNode) Type ¶

func (it BoolNode) Type() nodeType

type FloatNode ¶

type FloatNode struct {
	// contains filtered or unexported fields
}

值节点

func (FloatNode) Eval ¶

func (it FloatNode) Eval(env interface{}) (interface{}, error)

func (FloatNode) Express ¶ added in v5.1.3

func (it FloatNode) Express() string

func (FloatNode) Type ¶

func (it FloatNode) Type() nodeType

type IntNode ¶

type IntNode struct {
	// contains filtered or unexported fields
}

值节点

func (IntNode) Eval ¶

func (it IntNode) Eval(env interface{}) (interface{}, error)

func (IntNode) Express ¶ added in v5.1.3

func (it IntNode) Express() string

func (IntNode) Type ¶

func (it IntNode) Type() nodeType

type NilNode ¶

type NilNode struct {
	// contains filtered or unexported fields
}

空节点

func (NilNode) Eval ¶

func (NilNode) Eval(env interface{}) (interface{}, error)

func (NilNode) Express ¶ added in v5.1.3

func (it NilNode) Express() string

func (NilNode) Type ¶

func (it NilNode) Type() nodeType

type Node ¶

type Node interface {
	Type() nodeType
	Eval(env interface{}) (interface{}, error)
	Express() string
}

抽象语法树节点

func Parser ¶

func Parser(express string) (Node, error)

type Operator ¶

type Operator = string

操作符

const (
	//计算操作符
	Add    Operator = "+"
	Reduce Operator = "-"
	Ride   Operator = "*"
	Divide Operator = "/"

	//比较操作符
	And       Operator = "&&"
	Or        Operator = "||"
	Equal     Operator = "=="
	UnEqual   Operator = "!="
	Less      Operator = "<"
	LessEqual Operator = "<="
	More      Operator = ">"
	MoreEqual Operator = ">="

	Nil  Operator = "nil"
	Null Operator = "null"
)

func ParserOperators ¶

func ParserOperators(express string) []Operator

type OptNode ¶

type OptNode struct {
	// contains filtered or unexported fields
}

func (OptNode) Eval ¶

func (it OptNode) Eval(env interface{}) (interface{}, error)

func (OptNode) Express ¶ added in v5.1.3

func (it OptNode) Express() string

func (OptNode) IsCalculationOperator ¶

func (it OptNode) IsCalculationOperator() bool

func (OptNode) Type ¶

func (it OptNode) Type() nodeType

type StringNode ¶

type StringNode struct {
	// contains filtered or unexported fields
}

值节点

func (StringNode) Eval ¶

func (it StringNode) Eval(env interface{}) (interface{}, error)

func (StringNode) Express ¶ added in v5.1.3

func (it StringNode) Express() string

func (StringNode) Type ¶

func (it StringNode) Type() nodeType

type UIntNode ¶

type UIntNode struct {
	// contains filtered or unexported fields
}

func (UIntNode) Eval ¶

func (it UIntNode) Eval(env interface{}) (interface{}, error)

func (UIntNode) Express ¶ added in v5.1.3

func (it UIntNode) Express() string

func (UIntNode) Type ¶

func (it UIntNode) Type() nodeType

Source Files ¶

View all Source files

?	: This menu
/	: Search site
f or F	: Jump to
y or Y	: Canonical URL