1 // Copyright 2018 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Package inspect defines an Analyzer that provides an AST inspector 6 // (golang.org/x/tools/go/ast/inspector.Inspector) for the syntax trees 7 // of a package. It is only a building block for other analyzers. 8 // 9 // Example of use in another analysis: 10 // 11 // import ( 12 // "golang.org/x/tools/go/analysis" 13 // "golang.org/x/tools/go/analysis/passes/inspect" 14 // "golang.org/x/tools/go/ast/inspector" 15 // ) 16 // 17 // var Analyzer = &analysis.Analyzer{ 18 // ... 19 // Requires: []*analysis.Analyzer{inspect.Analyzer}, 20 // } 21 // 22 // func run(pass *analysis.Pass) (interface{}, error) { 23 // inspect := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector) 24 // inspect.Preorder(nil, func(n ast.Node) { 25 // ... 26 // }) 27 // return nil, nil 28 // } 29 package inspect 30 31 import ( 32 "reflect" 33 34 "golang.org/x/tools/go/analysis" 35 "golang.org/x/tools/go/ast/inspector" 36 ) 37 38 var Analyzer = &analysis.Analyzer{ 39 Name: "inspect", 40 Doc: "optimize AST traversal for later passes", 41 Run: run, 42 RunDespiteErrors: true, 43 ResultType: reflect.TypeOf(new(inspector.Inspector)), 44 } 45 46 func run(pass *analysis.Pass) (interface{}, error) { 47 return inspector.New(pass.Files), nil 48 } 49