235a7d8f80
Previously, goose would ignore declarations in the //+build gooseinject files that were not injectors. This meant that if you wanted to write application-specific providers, you would need to place them in a separate file, away from the goose injectors. This means that a typical application would have three handwritten files: one for the abstract business logic, one for the platform-specific providers, one for the platform-specific injector declarations. This change allows the two platform-specific files to be merged into one: the //+build gooseinject file. goose will now copy these declarations out to goose_gen.go. This requires a bit of hackery, since the generated file may have different identifiers for the imported packages, so goose will do some light AST rewriting to address these cases. (Historical note: this was the first change made externally, so also in here are the copyright headers and other housekeeping changes.) Reviewed-by: Tuo Shan <shantuo@google.com> Reviewed-by: kokoro <noreply+kokoro@google.com>
63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"errors"
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"fmt"
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"strings"
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)
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var (
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cleanedFoo = false
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cleanedBar = false
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)
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func main() {
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_, cleanup, err := injectBaz()
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if err == nil {
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fmt.Println("<nil>")
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} else {
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fmt.Println(strings.Contains(err.Error(), "bork!"))
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}
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fmt.Println(cleanedFoo, cleanedBar, cleanup == nil)
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}
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type Foo int
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type Bar int
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type Baz int
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func provideFoo() (*Foo, func()) {
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foo := new(Foo)
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*foo = 42
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return foo, func() { *foo = 0; cleanedFoo = true }
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}
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func provideBar(foo *Foo) (*Bar, func(), error) {
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bar := new(Bar)
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*bar = 77
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return bar, func() {
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if *foo == 0 {
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panic("foo cleaned up before bar")
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}
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*bar = 0
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cleanedBar = true
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}, nil
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}
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func provideBaz(bar *Bar) (Baz, error) {
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return 0, errors.New("bork!")
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}
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