78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
// unused reports unused identifiers (types, functions, ...) in your
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// code.
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package main // import "honnef.co/go/tools/cmd/unused"
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import (
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"log"
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"os"
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"honnef.co/go/tools/lint/lintutil"
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"honnef.co/go/tools/unused"
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)
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var (
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fConstants bool
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fFields bool
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fFunctions bool
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fTypes bool
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fVariables bool
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fDebug string
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fWholeProgram bool
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fReflection bool
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)
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func newChecker(mode unused.CheckMode) *unused.Checker {
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checker := unused.NewChecker(mode)
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if fDebug != "" {
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debug, err := os.Create(fDebug)
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if err != nil {
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log.Fatal("couldn't open debug file:", err)
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}
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checker.Debug = debug
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}
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checker.WholeProgram = fWholeProgram
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checker.ConsiderReflection = fReflection
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return checker
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}
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func main() {
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log.SetFlags(0)
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fs := lintutil.FlagSet("unused")
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fs.BoolVar(&fConstants, "consts", true, "Report unused constants")
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fs.BoolVar(&fFields, "fields", true, "Report unused fields")
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fs.BoolVar(&fFunctions, "funcs", true, "Report unused functions and methods")
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fs.BoolVar(&fTypes, "types", true, "Report unused types")
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fs.BoolVar(&fVariables, "vars", true, "Report unused variables")
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fs.StringVar(&fDebug, "debug", "", "Write a debug graph to `file`. Existing files will be overwritten.")
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fs.BoolVar(&fWholeProgram, "exported", false, "Treat arguments as a program and report unused exported identifiers")
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fs.BoolVar(&fReflection, "reflect", true, "Consider identifiers as used when it's likely they'll be accessed via reflection")
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fs.Parse(os.Args[1:])
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var mode unused.CheckMode
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if fConstants {
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mode |= unused.CheckConstants
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}
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if fFields {
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mode |= unused.CheckFields
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}
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if fFunctions {
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mode |= unused.CheckFunctions
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}
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if fTypes {
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mode |= unused.CheckTypes
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}
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if fVariables {
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mode |= unused.CheckVariables
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}
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checker := newChecker(mode)
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l := unused.NewLintChecker(checker)
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cfg := lintutil.CheckerConfig{
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Checker: l,
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ExitNonZero: true,
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}
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lintutil.ProcessFlagSet([]lintutil.CheckerConfig{cfg}, fs)
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}
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