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Support filed name "*" for wire.FieldsOf #2

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Support filed name "*" for wire.FieldsOf #2

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2 changes: 2 additions & 0 deletions Makefile
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
wire:
go run ./cmd/wire ./_tutorial/
23 changes: 23 additions & 0 deletions _tutorial/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@ import (
"fmt"
"os"
"time"

"github.com/google/wire"
)

// Message is what greeters will use to greet guests.
Expand Down Expand Up @@ -81,3 +83,24 @@ func main() {
}
e.Start()
}

type X int
type Y int
type Z int

type A struct{}

type God struct {
X X
Y Y
Z Z
}

var set = wire.NewSet(
New,
wire.FieldsOf(new(God), "*"),
)

func New(X, Y, Z) A {
return A{}
}
4 changes: 4 additions & 0 deletions _tutorial/wire.go
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Expand Up @@ -26,3 +26,7 @@ func InitializeEvent(phrase string) (Event, error) {
wire.Build(NewEvent, NewGreeter, NewMessage)
return Event{}, nil
}

func InitializeX(g God) A {
panic(wire.Build(set))
}
10 changes: 10 additions & 0 deletions _tutorial/wire_gen.go
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33 changes: 30 additions & 3 deletions internal/wire/parse.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1038,6 +1038,33 @@ func processFieldsOf(fset *token.FileSet, info *types.Info, call *ast.CallExpr)
}

fields := make([]*Field, 0, len(call.Args)-1)
startExists := func() bool {
for i := 1; i < len(call.Args); i++ {
if b, ok := call.Args[i].(*ast.BasicLit); ok && b.Value == `"*"` {
return true
}
}
return false
}()
if startExists {
for i := 0; i < struc.NumFields(); i++ {
v := struc.Field(i)
out := []types.Type{v.Type()}
if isPtrToStruct {
// If the field is from a pointer to a struct, then
// wire.Fields also provides a pointer to the field.
out = append(out, types.NewPointer(v.Type()))
}
fields = append(fields, &Field{
Parent: structPtr.Elem(),
Name: v.Name(),
Pkg: v.Pkg(),
Pos: v.Pos(),
Out: out,
})
}
return fields, nil
}
for i := 1; i < len(call.Args); i++ {
v, err := checkField(call.Args[i], struc)
if err != nil {
Expand Down Expand Up @@ -1173,9 +1200,9 @@ func (pt ProvidedType) IsNil() bool {
//
// - For a function provider, this is the first return value type.
// - For a struct provider, this is either the struct type or the pointer type
// whose element type is the struct type.
// - For a value, this is the type of the expression.
// - For an argument, this is the type of the argument.
// whose element type is the struct type.
// - For a value, this is the type of the expression.
// - For an argument, this is the type of the argument.
func (pt ProvidedType) Type() types.Type {
return pt.t
}
Expand Down