di

Documentation

Overview

Package di provides a reflection based dependency injection toolkit.

Index

• func Catch(format string, err *error)
• type Builder
• type CleanUp
  • func (a CleanUp) Do() (err error)
• type Closer
• type Injector
  • func New(parent *Injector) *Injector
  • func (a *Injector) Close() (err error)
  • func (a *Injector) Invoke(function any) (result Result, err error)
  • func (a *Injector) MustProvide(constructor any, itype any)
  • func (a *Injector) Provide(constructor any, itype any) error
• type Result
  • func (a Result) Scan(vs ...any) (err error)

Functions

func Catch

func Catch(format string, err *error)

Catch catches the panic.

Types

type Builder

type Builder func(reflect.Type) (reflect.Value, CleanUp, error)

Builder represents a builder function.

type CleanUp

type CleanUp func() error

CleanUp represents a clean up function.

func (CleanUp) Do

func (a CleanUp) Do() (err error)

Do does the clean up.

type Closer

type Closer interface {
	Close() error
}

Closer is the interface that wraps the basic Close method.

type Injector

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

Injector represents a dependency injector.

func New

func New(parent *Injector) *Injector

New creates a new injector.

func (*Injector) Close

func (a *Injector) Close() (err error)

Close frees up resources allocated for the injector.

func (*Injector) Invoke

func (a *Injector) Invoke(function any) (result Result, err error)

Invoke runs the given function after instantiating its dependencies.

func (*Injector) MustProvide

func (a *Injector) MustProvide(constructor any, itype any)

MustProvide is like Provide but panics if has error.

func (*Injector) Provide

func (a *Injector) Provide(constructor any, itype any) error

Provide teaches the injector how to build values and expresses their dependencies.

type Result

type Result []reflect.Value

Result represents a invoke result.

func (Result) Scan

func (a Result) Scan(vs ...any) (err error)

Scan copies the result into the values pointed at by vs.