some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.0.0-20201105173854-bc9fc8d8c4bc / go / analysis / passes / unusedresult / unusedresult.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/go/analysis/passes/unusedresult/unusedresult.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/go/analysis/passes/unusedresult/unusedresult.go
deleted file mode 100644 (file)
index bececee..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/go/analysis/passes/unusedresult/unusedresult.go
+++ /dev/null
@@ -1,131 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package unusedresult defines an analyzer that checks for unused
-// results of calls to certain pure functions.
-package unusedresult
-
-import (
-       "go/ast"
-       "go/token"
-       "go/types"
-       "sort"
-       "strings"
-
-       "golang.org/x/tools/go/analysis"
-       "golang.org/x/tools/go/analysis/passes/inspect"
-       "golang.org/x/tools/go/analysis/passes/internal/analysisutil"
-       "golang.org/x/tools/go/ast/inspector"
-)
-
-// TODO(adonovan): make this analysis modular: export a mustUseResult
-// fact for each function that tail-calls one of the functions that we
-// check, and check those functions too.
-
-const Doc = `check for unused results of calls to some functions
-
-Some functions like fmt.Errorf return a result and have no side effects,
-so it is always a mistake to discard the result. This analyzer reports
-calls to certain functions in which the result of the call is ignored.
-
-The set of functions may be controlled using flags.`
-
-var Analyzer = &analysis.Analyzer{
-       Name:     "unusedresult",
-       Doc:      Doc,
-       Requires: []*analysis.Analyzer{inspect.Analyzer},
-       Run:      run,
-}
-
-// flags
-var funcs, stringMethods stringSetFlag
-
-func init() {
-       // TODO(adonovan): provide a comment syntax to allow users to
-       // add their functions to this set using facts.
-       funcs.Set("errors.New,fmt.Errorf,fmt.Sprintf,fmt.Sprint,sort.Reverse,context.WithValue,context.WithCancel,context.WithDeadline,context.WithTimeout")
-       Analyzer.Flags.Var(&funcs, "funcs",
-               "comma-separated list of functions whose results must be used")
-
-       stringMethods.Set("Error,String")
-       Analyzer.Flags.Var(&stringMethods, "stringmethods",
-               "comma-separated list of names of methods of type func() string whose results must be used")
-}
-
-func run(pass *analysis.Pass) (interface{}, error) {
-       inspect := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector)
-
-       nodeFilter := []ast.Node{
-               (*ast.ExprStmt)(nil),
-       }
-       inspect.Preorder(nodeFilter, func(n ast.Node) {
-               call, ok := analysisutil.Unparen(n.(*ast.ExprStmt).X).(*ast.CallExpr)
-               if !ok {
-                       return // not a call statement
-               }
-               fun := analysisutil.Unparen(call.Fun)
-
-               if pass.TypesInfo.Types[fun].IsType() {
-                       return // a conversion, not a call
-               }
-
-               selector, ok := fun.(*ast.SelectorExpr)
-               if !ok {
-                       return // neither a method call nor a qualified ident
-               }
-
-               sel, ok := pass.TypesInfo.Selections[selector]
-               if ok && sel.Kind() == types.MethodVal {
-                       // method (e.g. foo.String())
-                       obj := sel.Obj().(*types.Func)
-                       sig := sel.Type().(*types.Signature)
-                       if types.Identical(sig, sigNoArgsStringResult) {
-                               if stringMethods[obj.Name()] {
-                                       pass.Reportf(call.Lparen, "result of (%s).%s call not used",
-                                               sig.Recv().Type(), obj.Name())
-                               }
-                       }
-               } else if !ok {
-                       // package-qualified function (e.g. fmt.Errorf)
-                       obj := pass.TypesInfo.Uses[selector.Sel]
-                       if obj, ok := obj.(*types.Func); ok {
-                               qname := obj.Pkg().Path() + "." + obj.Name()
-                               if funcs[qname] {
-                                       pass.Reportf(call.Lparen, "result of %v call not used", qname)
-                               }
-                       }
-               }
-       })
-       return nil, nil
-}
-
-// func() string
-var sigNoArgsStringResult = types.NewSignature(nil, nil,
-       types.NewTuple(types.NewVar(token.NoPos, nil, "", types.Typ[types.String])),
-       false)
-
-type stringSetFlag map[string]bool
-
-func (ss *stringSetFlag) String() string {
-       var items []string
-       for item := range *ss {
-               items = append(items, item)
-       }
-       sort.Strings(items)
-       return strings.Join(items, ",")
-}
-
-func (ss *stringSetFlag) Set(s string) error {
-       m := make(map[string]bool) // clobber previous value
-       if s != "" {
-               for _, name := range strings.Split(s, ",") {
-                       if name == "" {
-                               continue // TODO: report error? proceed?
-                       }
-                       m[name] = true
-               }
-       }
-       *ss = m
-       return nil
-}