Files
wire/goose.go
Ross Light f8e446fa17 goose: use marker functions instead of comments
To avoid making this CL too large, I did not migrate the existing goose
comments through the repository.  This will be addressed in a subsequent
CL.

Reviewed-by: Tuo Shan <shantuo@google.com>
2018-11-12 14:09:56 -08:00

39 lines
1.1 KiB
Go

// Package goose contains directives for goose code generation.
package goose
// ProviderSet is a marker type that collects a group of providers.
type ProviderSet struct{}
// NewSet creates a new provider set that includes the providers in
// its arguments. Each argument is either an exported function value,
// an exported struct (zero) value, or a call to Bind.
func NewSet(...interface{}) ProviderSet {
return ProviderSet{}
}
// Use is placed in the body of an injector function to declare the
// providers to use. Its arguments are the same as NewSet. Its return
// value is an error message that can be sent to panic.
//
// Example:
//
// func injector(ctx context.Context) (*sql.DB, error) {
// panic(Use(otherpkg.Foo, myProviderFunc, goose.Bind()))
// }
func Use(...interface{}) string {
return "implementation not generated, run goose"
}
// A Binding maps an interface to a concrete type.
type Binding struct{}
// Bind declares that a concrete type should be used to satisfy a
// dependency on iface.
//
// Example:
//
// var MySet = goose.NewSet(goose.Bind(MyInterface(nil), new(MyStruct)))
func Bind(iface, to interface{}) Binding {
return Binding{}
}