src

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git clone git://code.dwrz.net/src
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sa1000.go (1066B)

      1 package sa1000
      2 
      3 import (
      4 	"go/constant"
      5 	"regexp"
      6 
      7 	"honnef.co/go/tools/analysis/callcheck"
      8 	"honnef.co/go/tools/analysis/lint"
      9 	"honnef.co/go/tools/internal/passes/buildir"
     10 
     11 	"golang.org/x/tools/go/analysis"
     12 )
     13 
     14 var SCAnalyzer = lint.InitializeAnalyzer(&lint.Analyzer{
     15 	Analyzer: &analysis.Analyzer{
     16 		Name:     "SA1000",
     17 		Requires: []*analysis.Analyzer{buildir.Analyzer},
     18 		Run:      callcheck.Analyzer(rules),
     19 	},
     20 	Doc: &lint.RawDocumentation{
     21 		Title:    `Invalid regular expression`,
     22 		Since:    "2017.1",
     23 		Severity: lint.SeverityError,
     24 		MergeIf:  lint.MergeIfAny,
     25 	},
     26 })
     27 
     28 var Analyzer = SCAnalyzer.Analyzer
     29 
     30 var rules = map[string]callcheck.Check{
     31 	"regexp.MustCompile": check,
     32 	"regexp.Compile":     check,
     33 	"regexp.Match":       check,
     34 	"regexp.MatchReader": check,
     35 	"regexp.MatchString": check,
     36 }
     37 
     38 func check(call *callcheck.Call) {
     39 	arg := call.Args[0]
     40 	if c := callcheck.ExtractConstExpectKind(arg.Value, constant.String); c != nil {
     41 		s := constant.StringVal(c.Value)
     42 		if _, err := regexp.Compile(s); err != nil {
     43 			arg.Invalid(err.Error())
     44 		}
     45 	}
     46 }