tidb analyzer 源码
tidb analyzer 代码
文件路径：/build/linter/prealloc/analyzer.go
// 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 prealloc
import (
"go/ast"
"github.com/golangci/prealloc"
"github.com/pingcap/tidb/build/linter/util"
"golang.org/x/tools/go/analysis"
)
// Settings is the settings for preallocation.
type Settings struct {
Simple bool
RangeLoops bool `mapstructure:"range-loops"`
ForLoops bool `mapstructure:"range-loops"`
}
// Name is the name of the analyzer.
const Name = "prealloc"
// Analyzer is the analyzer struct of prealloc.
var Analyzer = &analysis.Analyzer{
Name: Name,
Doc: "Finds slice declarations that could potentially be preallocated",
Run: run,
}
func run(pass *analysis.Pass) (interface{}, error) {
s := &Settings{
Simple: true,
RangeLoops: true,
ForLoops: false,
}
for _, f := range pass.Files {
hints := prealloc.Check([]*ast.File{f}, s.Simple, s.RangeLoops, s.ForLoops)
for _, hint := range hints {
pass.Reportf(hint.Pos, "[%s] Consider preallocating %s", Name, util.FormatCode(hint.DeclaredSliceName))
}
}
return nil, nil
}
func init() {
util.SkipAnalyzer(Analyzer)
}
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