gates

package module
v0.0.14 Latest Latest
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 Go to latest Published: Dec 12, 2020 License: MIT Imports: 12 Imported by: 0

README

Gates

An embedded language for Go.

Features

  • Easily embedded in Go.
  • JavaScript-like syntax with native int64 support.
  • First class functions.
  • Execution time limit.

Comparision

Gates Lua 5.3+ JavaScript
Int64 support Y Y N
Compatible with JSON Y N (hard to distinguish between [] and {}) Y
Easily embedded in Go Y N N

Try Gates in Command Line

$ go get -u github.com/lujjjh/gates/cmd/gates
$ echo '[1, 2, 3] | map(x => x * x)' | gates
# 1,4,9

Data Types

  • number (int64 / float64)
  • string
  • bool
  • map
  • array
  • function

Examples

View Examples

Credits

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	True  = Bool(true)
	False = Bool(false)
)
View Source 
var (
	ErrStackOverflow       = errors.New("stack overflow")
	ErrCyclesLimitExceeded = errors.New("cycles limit exceeded")
)
View Source 
var Null _Null

Functions

func Type added in v0.0.12 

func Type(v Value) string

Type returns the type tag of the given value.

Types

type ArgumentScanner added in v0.0.12 

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

func NewArgumentScanner added in v0.0.12 

func NewArgumentScanner(fc FunctionCall) *ArgumentScanner

func (*ArgumentScanner) Scan added in v0.0.12 

func (s *ArgumentScanner) Scan(values ...interface{}) error

type Array 

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

func NewArray added in v0.0.12 

func NewArray(values []Value) Array

func NewArrayFromStringSlice added in v0.0.12 

func NewArrayFromStringSlice(a []string) Array

func (Array) Equals added in v0.0.12 

func (a Array) Equals(other Value) bool

func (Array) Get added in v0.0.12 

func (a Array) Get(r *Runtime, key Value) Value

func (Array) IsBool added in v0.0.12 

func (Array) IsBool() bool

func (Array) IsFloat added in v0.0.12 

func (Array) IsFloat() bool

func (Array) IsFunction added in v0.0.12 

func (Array) IsFunction() bool

func (Array) IsInt added in v0.0.12 

func (Array) IsInt() bool

func (Array) IsString added in v0.0.12 

func (Array) IsString() bool

func (Array) Iterator added in v0.0.12 

func (a Array) Iterator() Iterator

func (Array) SameAs added in v0.0.12 

func (a Array) SameAs(other Value) bool

func (Array) Set added in v0.0.12 

func (a Array) Set(r *Runtime, key, value Value)

func (Array) ToBool added in v0.0.12 

func (Array) ToBool() bool

func (Array) ToFloat added in v0.0.12 

func (Array) ToFloat() float64

func (Array) ToFunction added in v0.0.12 

func (Array) ToFunction() Function

func (Array) ToInt added in v0.0.12 

func (Array) ToInt() int64

func (Array) ToNative added in v0.0.12 

func (a Array) ToNative(ops ...ToNativeOption) interface{}

func (Array) ToNumber added in v0.0.12 

func (a Array) ToNumber() Number

func (Array) ToString added in v0.0.12 

func (a Array) ToString() string

func (Array) Type added in v0.0.12 

func (Array) Type() string

type Bool 

type Bool bool

func (Bool) Equals 

func (b Bool) Equals(other Value) bool

func (Bool) IsBool 

func (Bool) IsBool() bool

func (Bool) IsFloat 

func (Bool) IsFloat() bool

func (Bool) IsFunction 

func (Bool) IsFunction() bool

func (Bool) IsInt 

func (Bool) IsInt() bool

func (Bool) IsString 

func (Bool) IsString() bool

func (Bool) SameAs 

func (b Bool) SameAs(bv Value) bool

func (Bool) ToBool 

func (b Bool) ToBool() bool

func (Bool) ToFloat 

func (b Bool) ToFloat() float64

func (Bool) ToFunction 

func (b Bool) ToFunction() Function

func (Bool) ToInt 

func (b Bool) ToInt() int64

func (Bool) ToNative 

func (b Bool) ToNative(...ToNativeOption) interface{}

func (Bool) ToNumber 

func (b Bool) ToNumber() Number

func (Bool) ToString 

func (b Bool) ToString() string

type Callback added in v0.0.12 

type Callback func(...Value) Value

type CompilerError 

type CompilerError struct {
	Message string
	File    *syntax.File
	Pos     syntax.Pos
}

type CompilerSyntaxError 

type CompilerSyntaxError struct {
	CompilerError
}

func (*CompilerSyntaxError) Error 

func (e *CompilerSyntaxError) Error() string

type ErrTooFewArguments added in v0.0.12 

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

func (*ErrTooFewArguments) Error added in v0.0.12 

func (e *ErrTooFewArguments) Error() string

type ErrTypeMismatch added in v0.0.12 

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

func (*ErrTypeMismatch) Error added in v0.0.12 

func (e *ErrTypeMismatch) Error() string

type ErrTypeNotSupported added in v0.0.12 

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

func (*ErrTypeNotSupported) Error added in v0.0.12 

func (e *ErrTypeNotSupported) Error() string

type ErrWithArgumentIndex added in v0.0.12 

type ErrWithArgumentIndex struct {
	Err error
	// contains filtered or unexported fields
}

func (*ErrWithArgumentIndex) Error added in v0.0.12 

func (e *ErrWithArgumentIndex) Error() string

type Float 

type Float float64

func (Float) Equals 

func (f Float) Equals(other Value) bool

func (Float) IsBool 

func (Float) IsBool() bool

func (Float) IsFloat 

func (Float) IsFloat() bool

func (Float) IsFunction 

func (Float) IsFunction() bool

func (Float) IsInt 

func (Float) IsInt() bool

func (Float) IsString 

func (Float) IsString() bool

func (Float) SameAs 

func (f Float) SameAs(b Value) bool

func (Float) ToBool 

func (f Float) ToBool() bool

func (Float) ToFloat 

func (f Float) ToFloat() float64

func (Float) ToFunction 

func (f Float) ToFunction() Function

func (Float) ToInt 

func (f Float) ToInt() int64

func (Float) ToNative 

func (f Float) ToNative(...ToNativeOption) interface{}

func (Float) ToNumber 

func (f Float) ToNumber() Number

func (Float) ToString 

func (f Float) ToString() string

type Function 

type Function interface {
	Value
	// contains filtered or unexported methods
}

func CurriedFunctionFunc added in v0.0.12 

func CurriedFunctionFunc(n int, f func(FunctionCall) Value) Function

func Curry added in v0.0.12 

func Curry(f Function, n int) Function

func FunctionFunc 

func FunctionFunc(fun func(FunctionCall) Value) Function

type FunctionCall 

type FunctionCall interface {
	Runtime() *Runtime
	Args() []Value
}

type Global 

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

func NewGlobal 

func NewGlobal() *Global

func (*Global) Get 

func (g *Global) Get(name string) Value

func (*Global) Set 

func (g *Global) Set(name string, value Value)

type Int 

type Int int64

func (Int) Equals 

func (i Int) Equals(other Value) bool

func (Int) IsBool 

func (Int) IsBool() bool

func (Int) IsFloat 

func (Int) IsFloat() bool

func (Int) IsFunction 

func (Int) IsFunction() bool

func (Int) IsInt 

func (Int) IsInt() bool

func (Int) IsString 

func (Int) IsString() bool

func (Int) SameAs 

func (i Int) SameAs(b Value) bool

func (Int) ToBool 

func (i Int) ToBool() bool

func (Int) ToFloat 

func (i Int) ToFloat() float64

func (Int) ToFunction 

func (i Int) ToFunction() Function

func (Int) ToInt 

func (i Int) ToInt() int64

func (Int) ToNative 

func (i Int) ToNative(...ToNativeOption) interface{}

func (Int) ToNumber 

func (i Int) ToNumber() Number

func (Int) ToString 

func (i Int) ToString() string

type Iterable 

type Iterable interface {
	Iterator() Iterator
}

func GetIterable 

func GetIterable(v Value) (Iterable, bool)

type Iterator 

type Iterator interface {
	Next() (value Value, ok bool)
}

func GetIterator added in v0.0.12 

func GetIterator(v Value) (Iterator, bool)

type Map 

type Map map[string]Value

func (Map) Equals 

func (m Map) Equals(other Value) bool

func (Map) Get 

func (m Map) Get(r *Runtime, key Value) Value

func (Map) IsBool 

func (Map) IsBool() bool

func (Map) IsFloat 

func (Map) IsFloat() bool

func (Map) IsFunction 

func (Map) IsFunction() bool

func (Map) IsInt 

func (Map) IsInt() bool

func (Map) IsString 

func (Map) IsString() bool

func (Map) Iterator 

func (m Map) Iterator() Iterator

func (Map) SameAs 

func (m Map) SameAs(other Value) bool

func (Map) Set 

func (m Map) Set(r *Runtime, key, value Value)

func (Map) ToBool 

func (Map) ToBool() bool

func (Map) ToFloat 

func (Map) ToFloat() float64

func (Map) ToFunction 

func (Map) ToFunction() Function

func (Map) ToInt 

func (Map) ToInt() int64

func (Map) ToNative 

func (m Map) ToNative(ops ...ToNativeOption) interface{}

func (Map) ToNumber 

func (m Map) ToNumber() Number

func (Map) ToString 

func (Map) ToString() string

func (Map) Type added in v0.0.12 

func (Map) Type() string

type Number 

type Number interface {
	Value
	// contains filtered or unexported methods
}

type Program 

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

func Compile 

func Compile(x string) (program *Program, err error)

func (*Program) InstructionNumber added in v0.0.12 

func (p *Program) InstructionNumber() int

type Ref 

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

func NewRef 

func NewRef(v interface{}) Ref

func (Ref) Equals 

func (ref Ref) Equals(other Value) bool

func (Ref) IsBool 

func (Ref) IsBool() bool

func (Ref) IsFloat 

func (Ref) IsFloat() bool

func (Ref) IsFunction 

func (r Ref) IsFunction() bool

func (Ref) IsInt 

func (Ref) IsInt() bool

func (Ref) IsString 

func (Ref) IsString() bool

func (Ref) SameAs 

func (ref Ref) SameAs(other Value) bool

func (Ref) ToBool 

func (Ref) ToBool() bool

func (Ref) ToFloat 

func (Ref) ToFloat() float64

func (Ref) ToFunction 

func (r Ref) ToFunction() Function

func (Ref) ToInt 

func (Ref) ToInt() int64

func (Ref) ToNative 

func (r Ref) ToNative(...ToNativeOption) interface{}

func (Ref) ToNumber 

func (ref Ref) ToNumber() Number

func (Ref) ToString 

func (Ref) ToString() string

type Runtime 

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

func New 

func New() *Runtime

func (*Runtime) Call 

func (r *Runtime) Call(f Function, args ...Value) Value

func (*Runtime) Context 

func (r *Runtime) Context() context.Context

func (*Runtime) Global 

func (r *Runtime) Global() *Global

func (*Runtime) RunProgram 

func (r *Runtime) RunProgram(ctx context.Context, program *Program) (Value, error)

func (*Runtime) RunString 

func (r *Runtime) RunString(s string) (Value, error)

func (*Runtime) SetCyclesLimit added in v0.0.12 

func (r *Runtime) SetCyclesLimit(max int)

func (*Runtime) ToValue 

func (r *Runtime) ToValue(i interface{}) Value

type String 

type String string

func (String) Equals added in v0.0.12 

func (s String) Equals(other Value) bool

func (String) Get added in v0.0.12 

func (s String) Get(r *Runtime, key Value) Value

func (String) IsBool added in v0.0.12 

func (String) IsBool() bool

func (String) IsFloat added in v0.0.12 

func (String) IsFloat() bool

func (String) IsFunction added in v0.0.12 

func (String) IsFunction() bool

func (String) IsInt added in v0.0.12 

func (String) IsInt() bool

func (String) IsString added in v0.0.12 

func (String) IsString() bool

func (String) SameAs added in v0.0.12 

func (s String) SameAs(b Value) bool

func (String) ToBool added in v0.0.12 

func (s String) ToBool() bool

func (String) ToFloat added in v0.0.12 

func (s String) ToFloat() float64

func (String) ToFunction added in v0.0.12 

func (s String) ToFunction() Function

func (String) ToInt added in v0.0.12 

func (s String) ToInt() int64

func (String) ToNative added in v0.0.12 

func (s String) ToNative(...ToNativeOption) interface{}

func (String) ToNumber added in v0.0.12 

func (s String) ToNumber() Number

func (String) ToString added in v0.0.12 

func (s String) ToString() string

type ToNativeOption added in v0.0.12 

type ToNativeOption int
const (
	SkipCircularReference ToNativeOption = 1 << iota
)

type Value 

type Value interface {
	IsString() bool
	IsInt() bool
	IsFloat() bool
	IsBool() bool
	IsFunction() bool

	ToString() string
	ToInt() int64
	ToFloat() float64
	ToNumber() Number
	ToBool() bool
	ToFunction() Function

	ToNative(...ToNativeOption) interface{}

	Equals(Value) bool
	SameAs(Value) bool
}

func ToValue 

func ToValue(i interface{}) Value

Source Files

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Directories

Path Synopsis
cmd
gates

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