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*: enable unconvert #35821
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*: enable unconvert #35821
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e73dd3e
*: enable unconvert
hawkingrei 205d67f
*: enable unconvert
hawkingrei e71a3c4
*: enable unconvert
hawkingrei 472da15
*: enable unconvert
hawkingrei e43a93a
*: enable unconvert
hawkingrei 8f09e24
Merge branch 'master' into unconvert
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| load("@io_bazel_rules_go//go:def.bzl", "go_library") | ||
|
|
||
| go_library( | ||
| name = "unconvert", | ||
| srcs = ["analysis.go"], | ||
| importpath = "github.com/pingcap/tidb/build/linter/unconvert", | ||
| visibility = ["//visibility:public"], | ||
| deps = [ | ||
| "//build/linter/util", | ||
| "@com_github_golangci_unconvert//:unconvert", | ||
| "@org_golang_x_tools//go/analysis", | ||
| "@org_golang_x_tools//go/loader", | ||
| ], | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // Copyright 2022 PingCAP, Inc. | ||
| // | ||
| // 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 | ||
| // | ||
| // http://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 unconvert | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "go/token" | ||
| "go/types" | ||
|
|
||
| unconvertAPI "github.com/golangci/unconvert" | ||
| "github.com/pingcap/tidb/build/linter/util" | ||
| "golang.org/x/tools/go/analysis" | ||
| "golang.org/x/tools/go/loader" | ||
| ) | ||
|
|
||
| // Name is the name of the analyzer. | ||
| const Name = "unconvert" | ||
|
|
||
| // Analyzer is the analyzer struct of unconvert. | ||
| var Analyzer = &analysis.Analyzer{ | ||
| Name: Name, | ||
| Doc: "Remove unnecessary type conversions", | ||
| Run: run, | ||
| } | ||
|
|
||
| func run(pass *analysis.Pass) (interface{}, error) { | ||
| var createdPkgs []*loader.PackageInfo | ||
| createdPkgs = append(createdPkgs, util.MakeFakeLoaderPackageInfo(pass)) | ||
| allPkgs := map[*types.Package]*loader.PackageInfo{} | ||
| for _, pkg := range createdPkgs { | ||
| pkg := pkg | ||
| allPkgs[pkg.Pkg] = pkg | ||
| } | ||
| prog := &loader.Program{ | ||
| Fset: pass.Fset, | ||
| Imported: nil, // not used without .Created in any linter | ||
| Created: createdPkgs, // all initial packages | ||
| AllPackages: allPkgs, // all initial packages and their depndencies | ||
| } | ||
| positions := unconvertAPI.Run(prog) | ||
| if len(positions) == 0 { | ||
| return nil, nil | ||
| } | ||
|
|
||
| for _, pos := range positions { | ||
| pass.Reportf(token.Pos(pos.Offset), fmt.Sprintf("[%s] Unnecessary conversion", Name)) | ||
| } | ||
| return nil, nil | ||
| } | ||
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Later you should add a method document or file document about all these analyzers' semantic. For example, what case is good and what case is bad. It's not intuitive for developer reading the code and understand the effective rule.
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It is a good suggestion. I have a plan to write a document to add a new linter into TiDB repo by the nogo after complete golangci-linter mrigate. I should write the document as soon as possible. I find much new linter can be added in the TiDB.