easycel

README

Easy CEl

Easy CEL is a wrapping of https://github.com/google/cel-go

License

Licensed under the MIT License. See LICENSE for the full license text.

Documentation

Index

• type Environment
  • func NewEnvironment(opts ...cel.EnvOption) (*Environment, error)
  • func (e *Environment) Program(src string, opts ...cel.ProgramOption) (cel.Program, error)
• type Registry
  • func NewRegistry(libraryName string, opts ...RegistryOption) *Registry
  • func (r *Registry) CompileOptions() []cel.EnvOption
  • func (r *Registry) EnumValue(enumName string) ref.Val
  • func (r *Registry) FindIdent(identName string) (ref.Val, bool)
  • func (r *Registry) FindStructFieldNames(structType string) ([]string, bool)
  • func (r *Registry) FindStructFieldType(structType, fieldName string) (*types.FieldType, bool)
  • func (r *Registry) FindStructType(structType string) (*types.Type, bool)
  • func (r *Registry) LibraryName() string
  • func (r *Registry) NativeToValue(value any) ref.Val
  • func (r *Registry) NewValue(typeName string, fields map[string]ref.Val) ref.Val
  • func (r *Registry) ProgramOptions() []cel.ProgramOption
  • func (r *Registry) RegisterConversion(fun any) error
  • func (r *Registry) RegisterFunction(name string, fun interface{}) error
  • func (r *Registry) RegisterMethod(name string, fun interface{}) error
  • func (r *Registry) RegisterType(refTypes any) error
  • func (r *Registry) RegisterVariable(name string, val interface{}) error
• type RegistryOption
  • func WithTagName(tagName string) RegistryOption
  • func WithTypeAdapter(adapter types.Adapter) RegistryOption
  • func WithTypeProvider(provider types.Provider) RegistryOption
• type Type

Types

type Environment

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

Environment is a wrapper around CEL environment

func NewEnvironment

func NewEnvironment(opts ...cel.EnvOption) (*Environment, error)

NewEnvironment creates a new CEL environment

func (*Environment) Program

func (e *Environment) Program(src string, opts ...cel.ProgramOption) (cel.Program, error)

Program creates a new CEL program

type Registry

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

func NewRegistry

func NewRegistry(libraryName string, opts ...RegistryOption) *Registry

NewRegistry creates adapter new Registry.

func (*Registry) CompileOptions

func (r *Registry) CompileOptions() []cel.EnvOption

CompileOptions implements the Library interface method.

func (*Registry) EnumValue

func (r *Registry) EnumValue(enumName string) ref.Val

EnumValue returns the numeric value of the given enum value name.

func (*Registry) FindIdent

func (r *Registry) FindIdent(identName string) (ref.Val, bool)

FindIdent takes adapter qualified identifier name and returns adapter Value if one exists.

func (*Registry) FindStructFieldNames

func (r *Registry) FindStructFieldNames(structType string) ([]string, bool)

FindStructFieldNames returns thet field names associated with the type, if the type is found.

func (*Registry) FindStructFieldType

func (r *Registry) FindStructFieldType(structType, fieldName string) (*types.FieldType, bool)

FindStructFieldType returns the field type for a checked type value. Returns false if the field could not be found.

func (*Registry) FindStructType

func (r *Registry) FindStructType(structType string) (*types.Type, bool)

FindStructType returns the Type give a qualified type name.

func (*Registry) LibraryName

func (r *Registry) LibraryName() string

LibraryName implements the Library interface method.

func (*Registry) NativeToValue

func (r *Registry) NativeToValue(value any) ref.Val

NativeToValue converts the input `value` to adapter CEL `ref.Val`.

func (*Registry) NewValue

func (r *Registry) NewValue(typeName string, fields map[string]ref.Val) ref.Val

NewValue creates adapter new type value from adapter qualified name and map of field name to value.

func (*Registry) ProgramOptions

func (r *Registry) ProgramOptions() []cel.ProgramOption

ProgramOptions implements the Library interface method.

func (*Registry) RegisterConversion

func (r *Registry) RegisterConversion(fun any) error

RegisterConversion registers adapter conversion function with the registry.

func (*Registry) RegisterFunction

func (r *Registry) RegisterFunction(name string, fun interface{}) error

RegisterFunction registers adapter function with the registry.

func (*Registry) RegisterMethod

func (r *Registry) RegisterMethod(name string, fun interface{}) error

RegisterMethod registers adapter method with the registry.

func (*Registry) RegisterType

func (r *Registry) RegisterType(refTypes any) error

RegisterType registers adapter type with the registry.

func (*Registry) RegisterVariable

func (r *Registry) RegisterVariable(name string, val interface{}) error

RegisterVariable registers adapter value with the registry.

type RegistryOption

type RegistryOption func(*Registry)

func WithTagName

func WithTagName(tagName string) RegistryOption

WithTagName sets the tag name used to convert types to CEL types.

func WithTypeAdapter

func WithTypeAdapter(adapter types.Adapter) RegistryOption

WithTypeAdapter sets the type adapter used to convert types to CEL types.

func WithTypeProvider

func WithTypeProvider(provider types.Provider) RegistryOption

WithTypeProvider sets the type provider used to convert types to CEL types.

type Type

type Type interface {
	ref.Val
	ref.Type
	TagName() string
	GetRawType() reflect.Type
}

Type provider for native types.