some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.0.0-20201028153306-37f0764111ff / go / analysis / passes / errorsas / errorsas.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/analysis/passes/errorsas/errorsas.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/analysis/passes/errorsas/errorsas.go
deleted file mode 100644 (file)
index 384f025..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/analysis/passes/errorsas/errorsas.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// Copyright 2018 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.
-
-// The errorsas package defines an Analyzer that checks that the second argument to
-// errors.As is a pointer to a type implementing error.
-package errorsas
-
-import (
-       "go/ast"
-       "go/types"
-
-       "golang.org/x/tools/go/analysis"
-       "golang.org/x/tools/go/analysis/passes/inspect"
-       "golang.org/x/tools/go/ast/inspector"
-       "golang.org/x/tools/go/types/typeutil"
-)
-
-const Doc = `report passing non-pointer or non-error values to errors.As
-
-The errorsas analysis reports calls to errors.As where the type
-of the second argument is not a pointer to a type implementing error.`
-
-var Analyzer = &analysis.Analyzer{
-       Name:     "errorsas",
-       Doc:      Doc,
-       Requires: []*analysis.Analyzer{inspect.Analyzer},
-       Run:      run,
-}
-
-func run(pass *analysis.Pass) (interface{}, error) {
-       switch pass.Pkg.Path() {
-       case "errors", "errors_test":
-               // These packages know how to use their own APIs.
-               // Sometimes they are testing what happens to incorrect programs.
-               return nil, nil
-       }
-
-       inspect := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector)
-
-       nodeFilter := []ast.Node{
-               (*ast.CallExpr)(nil),
-       }
-       inspect.Preorder(nodeFilter, func(n ast.Node) {
-               call := n.(*ast.CallExpr)
-               fn := typeutil.StaticCallee(pass.TypesInfo, call)
-               if fn == nil {
-                       return // not a static call
-               }
-               if len(call.Args) < 2 {
-                       return // not enough arguments, e.g. called with return values of another function
-               }
-               if fn.FullName() == "errors.As" && !pointerToInterfaceOrError(pass, call.Args[1]) {
-                       pass.ReportRangef(call, "second argument to errors.As must be a non-nil pointer to either a type that implements error, or to any interface type")
-               }
-       })
-       return nil, nil
-}
-
-var errorType = types.Universe.Lookup("error").Type().Underlying().(*types.Interface)
-
-// pointerToInterfaceOrError reports whether the type of e is a pointer to an interface or a type implementing error,
-// or is the empty interface.
-func pointerToInterfaceOrError(pass *analysis.Pass, e ast.Expr) bool {
-       t := pass.TypesInfo.Types[e].Type
-       if it, ok := t.Underlying().(*types.Interface); ok && it.NumMethods() == 0 {
-               return true
-       }
-       pt, ok := t.Underlying().(*types.Pointer)
-       if !ok {
-               return false
-       }
-       _, ok = pt.Elem().Underlying().(*types.Interface)
-       return ok || types.Implements(pt.Elem(), errorType)
-}