blob: 679abe01a8a2bb8150f4c77a9ecda6d1dfdc15ca (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
# inject
--
import "github.com/codegangsta/inject"
Package inject provides utilities for mapping and injecting dependencies in
various ways.
Language Translations:
* [简体中文](translations/README_zh_cn.md)
## Usage
#### func InterfaceOf
```go
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
```go
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
```go
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
```go
func New() Injector
```
New returns a new Injector.
#### type Invoker
```go
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
```go
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.
|
