Bumping k8s dependencies to 1.13

vendor/golang.org/x/tools/go/analysis/singlechecker/singlechecker.go

@@ -0,0 +1,77 @@
+// 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.
+
+// Package singlechecker defines the main function for an analysis
+// driver with only a single analysis.
+// This package makes it easy for a provider of an analysis package to
+// also provide a standalone tool that runs just that analysis.
+//
+// For example, if example.org/findbadness is an analysis package,
+// all that is needed to define a standalone tool is a file,
+// example.org/findbadness/cmd/findbadness/main.go, containing:
+//
+//      // The findbadness command runs an analysis.
+// 	package main
+//
+// 	import (
+// 		"example.org/findbadness"
+// 		"golang.org/x/tools/go/analysis/singlechecker"
+// 	)
+//
+// 	func main() { singlechecker.Main(findbadness.Analyzer) }
+//
+package singlechecker
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"golang.org/x/tools/go/analysis"
+	"golang.org/x/tools/go/analysis/internal/analysisflags"
+	"golang.org/x/tools/go/analysis/internal/checker"
+	"golang.org/x/tools/go/analysis/unitchecker"
+)
+
+// Main is the main function for a checker command for a single analysis.
+func Main(a *analysis.Analyzer) {
+	log.SetFlags(0)
+	log.SetPrefix(a.Name + ": ")
+
+	analyzers := []*analysis.Analyzer{a}
+
+	if err := analysis.Validate(analyzers); err != nil {
+		log.Fatal(err)
+	}
+
+	checker.RegisterFlags()
+
+	flag.Usage = func() {
+		paras := strings.Split(a.Doc, "\n\n")
+		fmt.Fprintf(os.Stderr, "%s: %s\n\n", a.Name, paras[0])
+		fmt.Printf("Usage: %s [-flag] [package]\n\n", a.Name)
+		if len(paras) > 1 {
+			fmt.Println(strings.Join(paras[1:], "\n\n"))
+		}
+		fmt.Println("\nFlags:")
+		flag.PrintDefaults()
+	}
+
+	analyzers = analysisflags.Parse(analyzers, false)
+
+	args := flag.Args()
+	if len(args) == 0 {
+		flag.Usage()
+		os.Exit(1)
+	}
+
+	if len(args) == 1 && strings.HasSuffix(args[0], ".cfg") {
+		unitchecker.Run(args[0], analyzers)
+		panic("unreachable")
+	}
+
+	os.Exit(checker.Run(args, analyzers))
+}