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// Copyright 2018 The Wire Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"errors"
"fmt"
"strings"
)
var (
cleanedFoo = false
cleanedBar = false
)
func main() {
_, cleanup, err := injectBaz()
if err == nil {
fmt.Println("<nil>")
} else {
fmt.Println(strings.Contains(err.Error(), "bork!"))
}
fmt.Println(cleanedFoo, cleanedBar, cleanup == nil)
}
type Foo int
type Bar int
type Baz int
func provideFoo() (*Foo, func()) {
foo := new(Foo)
*foo = 42
return foo, func() { *foo = 0; cleanedFoo = true }
}
func provideBar(foo *Foo) (*Bar, func(), error) {
bar := new(Bar)
*bar = 77
return bar, func() {
if *foo == 0 {
panic("foo cleaned up before bar")
}
*bar = 0
cleanedBar = true
}, nil
}
func provideBaz(bar *Bar) (Baz, error) {
return 0, errors.New("bork!")
}
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