eval

package
Version: v0.455.0 Latest Latest
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Published: Sep 16, 2021 License: Apache-2.0 Imports: 18 Imported by: 0

Documentation

Index

Constants

View Source
const (
	ValueNoArg valueType = -1
	ValueBool  valueType = iota
	ValueInt
	ValueFloat
	ValueString
	ValueStringDecimal
	ValueList
	ValueMap
	ValueSet
	ValueNull
)

const definitions for various sysl.Value types

Variables

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var EnableDebugger = false
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var (

	// GoFuncMap is Map of Function Names to goFunc{}
	GoFuncMap = map[string]goFunc{
		"Contains":      {reflect.ValueOf(strings.Contains), []*sysl.Type{stringType, stringType}, boolType},
		"Count":         {reflect.ValueOf(strings.Count), []*sysl.Type{stringType, stringType}, intType},
		"Fields":        {reflect.ValueOf(strings.Fields), []*sysl.Type{stringType}, listStringType},
		"FindAllString": {reflect.ValueOf(FindAllString), []*sysl.Type{stringType, stringType, intType}, listStringType},
		"HasPrefix":     {reflect.ValueOf(strings.HasPrefix), []*sysl.Type{stringType, stringType}, boolType},
		"HasSuffix":     {reflect.ValueOf(strings.HasSuffix), []*sysl.Type{stringType, stringType}, boolType},
		"Join":          {reflect.ValueOf(strings.Join), []*sysl.Type{listStringType, stringType}, stringType},
		"LastIndex":     {reflect.ValueOf(strings.LastIndex), []*sysl.Type{stringType, stringType}, intType},
		"MatchString":   {reflect.ValueOf(MatchString), []*sysl.Type{stringType, stringType}, boolType},
		"Replace":       {reflect.ValueOf(strings.Replace), []*sysl.Type{stringType, stringType, stringType, intType}, stringType},
		"Split":         {reflect.ValueOf(strings.Split), []*sysl.Type{stringType, stringType}, listStringType},
		"Title":         {reflect.ValueOf(strings.Title), []*sysl.Type{stringType}, stringType},
		"ToLower":       {reflect.ValueOf(strings.ToLower), []*sysl.Type{stringType}, stringType},
		"ToTitle":       {reflect.ValueOf(strings.ToTitle), []*sysl.Type{stringType}, stringType},
		"ToUpper":       {reflect.ValueOf(strings.ToUpper), []*sysl.Type{stringType}, stringType},
		"Trim":          {reflect.ValueOf(strings.Trim), []*sysl.Type{stringType, stringType}, stringType},
		"TrimLeft":      {reflect.ValueOf(strings.TrimLeft), []*sysl.Type{stringType, stringType}, stringType},
		"TrimPrefix":    {reflect.ValueOf(strings.TrimPrefix), []*sysl.Type{stringType, stringType}, stringType},
		"TrimRight":     {reflect.ValueOf(strings.TrimRight), []*sysl.Type{stringType, stringType}, stringType},
		"TrimSpace":     {reflect.ValueOf(strings.TrimSpace), []*sysl.Type{stringType}, stringType},
		"TrimSuffix":    {reflect.ValueOf(strings.TrimSuffix), []*sysl.Type{stringType, stringType}, stringType},
	}
)

Functions

func AddItemToValueMap

func AddItemToValueMap(m *sysl.Value, name string, val *sysl.Value)

expects m.Value to be of type Value_Map

func AppendItemToValueList

func AppendItemToValueList(m *sysl.Value_List, val *sysl.Value)

func Eval

func Eval(ee *exprEval, assign Scope, e *sysl.Expr) *sysl.Value

Eval expr TODO: Add type checks

func EvaluateApp

func EvaluateApp(app *sysl.Application, view *sysl.View, s Scope) *sysl.Value

func EvaluateView

func EvaluateView(mod *sysl.Module, appName, viewName string, s Scope) *sysl.Value

EvaluateView evaluate the view using the Scope

func FindAllString

func FindAllString(pattern, word string, n int) []string

FindAllString exposes regexp.FindAllString to sysl transforms

func GetValueSlice

func GetValueSlice(obj *sysl.Value) []*sysl.Value

GetValueSlice returns the slice from either a set or a list

func IsCollectionType

func IsCollectionType(obj *sysl.Value) bool

IsCollectionType does obj holds multiple instances of the same thing?

func MakeValueBool

func MakeValueBool(val bool) *sysl.Value

MakeValueBool returns sysl.Value of type Value_B (bool)

func MakeValueI64

func MakeValueI64(val int64) *sysl.Value

MakeValueI64 returns sysl.Value of type Value_I (int64)

func MakeValueList

func MakeValueList(values ...*sysl.Value) *sysl.Value

MakeValueList returns sysl.Value of type Value_List_ ([]*sysl.Value)

func MakeValueMap

func MakeValueMap() *sysl.Value

MakeValueMap returns sysl.Value of type Value_Map_ (map[string]*sysl.Value)

func MakeValueSet

func MakeValueSet() *sysl.Value

MakeValueSet returns sysl.Value of type Value_Set ([]*sysl.Value)

func MakeValueString

func MakeValueString(val string) *sysl.Value

MakeValueString returns sysl.Value of type Value_S (string)

func MatchString

func MatchString(pattern, word string) bool

MatchString exposes regexp.MatchString to sysl transforms

func TypeToValue

func TypeToValue(t *sysl.Type) *sysl.Value

func UnaryString added in v0.5.2

func UnaryString(arg *sysl.Value) *sysl.Value

Types

type DebugFunc

type DebugFunc func(scope *Scope, app *sysl.Application, expr *sysl.Expr) error

func NewREPL

func NewREPL(input io.Reader, output io.Writer) DebugFunc

type DefaultBinExprStrategy

type DefaultBinExprStrategy struct{}

DefaultBinExprStrategy is to evaluate lhs and rhs expr's first and then pass it to fn

type LHSOverRHSStrategy

type LHSOverRHSStrategy struct{}

LHSOverRHSStrategy binds rhs expression over each element of the LHS. Assumes lhs is a collection

type NegateBinExprStrategy

type NegateBinExprStrategy struct{}

NegateBinExprStrategy is to evaluate the negative of the DefaultBinExprStrategy

type Scope

type Scope map[string]*sysl.Value

Scope holds the value of the variables during the execution of a transform

func (Scope) AddApp

func (s Scope) AddApp(name string, app *sysl.Application)

AddApp add sysl.App to scope

func (Scope) AddInt

func (s Scope) AddInt(name string, val int64)

AddInt add int to scope

func (Scope) AddModule

func (s Scope) AddModule(name string, module *sysl.Module)

AddModule add module <: sysl.Module to scope

func (Scope) AddString

func (s Scope) AddString(name string, val string)

AddString add string to scope

func (Scope) ToValue

func (s Scope) ToValue() *sysl.Value

type Strategy

type Strategy interface {
	// contains filtered or unexported methods
}

Strategy interface to evaluate binary expr

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