/
interface_loader.go
103 lines (94 loc) · 2.33 KB
/
interface_loader.go
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
93
94
95
96
97
98
99
100
101
102
103
package generator
import (
"fmt"
"go/types"
"strings"
"golang.org/x/tools/go/types/typeutil"
)
func (f *Fake) addTypesForMethod(sig *types.Signature) {
for i := 0; i < sig.Results().Len(); i++ {
ret := sig.Results().At(i)
f.addImportsFor(ret.Type())
}
for i := 0; i < sig.Params().Len(); i++ {
param := sig.Params().At(i)
f.addImportsFor(param.Type())
}
}
func methodForSignature(sig *types.Signature, methodName string, imports Imports) Method {
params := []Param{}
for i := 0; i < sig.Params().Len(); i++ {
param := sig.Params().At(i)
isVariadic := i == sig.Params().Len()-1 && sig.Variadic()
typ := types.TypeString(param.Type(), imports.AliasForPackage)
if isVariadic {
typ = "..." + typ[2:] // Change []string to ...string
}
p := Param{
Name: fmt.Sprintf("arg%v", i+1),
Type: typ,
IsVariadic: isVariadic,
IsSlice: strings.HasPrefix(typ, "[]"),
}
params = append(params, p)
}
returns := []Return{}
for i := 0; i < sig.Results().Len(); i++ {
ret := sig.Results().At(i)
r := Return{
Name: fmt.Sprintf("result%v", i+1),
Type: types.TypeString(ret.Type(), imports.AliasForPackage),
}
returns = append(returns, r)
}
return Method{
Name: methodName,
Returns: returns,
Params: params,
}
}
// interfaceMethodSet identifies the methods that are exported for a given
// interface.
func interfaceMethodSet(t types.Type) []*rawMethod {
if t == nil {
return nil
}
var result []*rawMethod
methods := typeutil.IntuitiveMethodSet(t, nil)
for i := range methods {
if methods[i].Obj() == nil || methods[i].Type() == nil {
continue
}
fun, ok := methods[i].Obj().(*types.Func)
if !ok {
continue
}
sig, ok := methods[i].Type().(*types.Signature)
if !ok {
continue
}
result = append(result, &rawMethod{
Func: fun,
Signature: sig,
})
}
return result
}
func (f *Fake) loadMethods() {
var methods []*rawMethod
if f.Mode == Package {
methods = packageMethodSet(f.Package)
} else {
if !f.IsInterface() || f.Target == nil || f.Target.Type() == nil {
return
}
methods = interfaceMethodSet(f.Target.Type())
}
for i := range methods {
f.addTypesForMethod(methods[i].Signature)
}
for i := range methods {
method := methodForSignature(methods[i].Signature, methods[i].Func.Name(), f.Imports)
f.Methods = append(f.Methods, method)
}
}