-- import "github.com/codegangsta/inject"
Package inject provides utilities for mapping and injecting dependencies in various ways.
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Usage
func InterfaceOf
func InterfaceOf(value interface{}) reflect.Type
InterfaceOf dereferences a pointer to an Interface type. It panics if value is not an pointer to an interface.
type Applicator
type Applicator interface { // Maps dependencies in the Type map to each field in the struct // that is tagged with 'inject'. Returns an error if the injection // fails. Apply(interface{}) error }
Applicator represents an interface for mapping dependencies to a struct.
type Injector
type Injector interface { Applicator Invoker TypeMapper // SetParent sets the parent of the injector. If the injector cannot find a // dependency in its Type map it will check its parent before returning an // error. SetParent(Injector) }
Injector represents an interface for mapping and injecting dependencies into structs and function arguments.
func New
func New() Injector
New returns a new Injector.
type Invoker
type Invoker interface { // Invoke attempts to call the interface{} provided as a function, // providing dependencies for function arguments based on Type. Returns // a slice of reflect.Value representing the returned values of the function. // Returns an error if the injection fails. Invoke(interface{}) ([]reflect.Value, error) }
Invoker represents an interface for calling functions via reflection.
type TypeMapper
type TypeMapper interface { // Maps the interface{} value based on its immediate type from reflect.TypeOf. Map(interface{}) TypeMapper // Maps the interface{} value based on the pointer of an Interface provided. // This is really only useful for mapping a value as an interface, as interfaces // cannot at this time be referenced directly without a pointer. MapTo(interface{}, interface{}) TypeMapper // Provides a possibility to directly insert a mapping based on type and value. // This makes it possible to directly map type arguments not possible to instantiate // with reflect like unidirectional channels. Set(reflect.Type, reflect.Value) TypeMapper // Returns the Value that is mapped to the current type. Returns a zeroed Value if // the Type has not been mapped. Get(reflect.Type) reflect.Value }
TypeMapper represents an interface for mapping interface{} values based on type.