diff options
Diffstat (limited to 'src/cmd/vendor/golang.org/x/mod/modfile/rule.go')
| -rw-r--r-- | src/cmd/vendor/golang.org/x/mod/modfile/rule.go | 102 |
1 files changed, 81 insertions, 21 deletions
diff --git a/src/cmd/vendor/golang.org/x/mod/modfile/rule.go b/src/cmd/vendor/golang.org/x/mod/modfile/rule.go index 8fcf96b713..f8c9384985 100644 --- a/src/cmd/vendor/golang.org/x/mod/modfile/rule.go +++ b/src/cmd/vendor/golang.org/x/mod/modfile/rule.go @@ -125,6 +125,12 @@ func (f *File) AddComment(text string) { type VersionFixer func(path, version string) (string, error) +// errDontFix is returned by a VersionFixer to indicate the version should be +// left alone, even if it's not canonical. +var dontFixRetract VersionFixer = func(_, vers string) (string, error) { + return vers, nil +} + // Parse parses the data, reported in errors as being from file, // into a File struct. It applies fix, if non-nil, to canonicalize all module versions found. func Parse(file string, data []byte, fix VersionFixer) (*File, error) { @@ -142,7 +148,7 @@ func ParseLax(file string, data []byte, fix VersionFixer) (*File, error) { return parseToFile(file, data, fix, false) } -func parseToFile(file string, data []byte, fix VersionFixer, strict bool) (*File, error) { +func parseToFile(file string, data []byte, fix VersionFixer, strict bool) (parsed *File, err error) { fs, err := parse(file, data) if err != nil { return nil, err @@ -150,8 +156,18 @@ func parseToFile(file string, data []byte, fix VersionFixer, strict bool) (*File f := &File{ Syntax: fs, } - var errs ErrorList + + // fix versions in retract directives after the file is parsed. + // We need the module path to fix versions, and it might be at the end. + defer func() { + oldLen := len(errs) + f.fixRetract(fix, &errs) + if len(errs) > oldLen { + parsed, err = nil, errs + } + }() + for _, x := range fs.Stmt { switch x := x.(type) { case *Line: @@ -370,7 +386,7 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a case "retract": rationale := parseRetractRationale(block, line) - vi, err := parseVersionInterval(verb, &args, fix) + vi, err := parseVersionInterval(verb, "", &args, dontFixRetract) if err != nil { if strict { wrapError(err) @@ -397,6 +413,47 @@ func (f *File) add(errs *ErrorList, block *LineBlock, line *Line, verb string, a } } +// fixRetract applies fix to each retract directive in f, appending any errors +// to errs. +// +// Most versions are fixed as we parse the file, but for retract directives, +// the relevant module path is the one specified with the module directive, +// and that might appear at the end of the file (or not at all). +func (f *File) fixRetract(fix VersionFixer, errs *ErrorList) { + if fix == nil { + return + } + path := "" + if f.Module != nil { + path = f.Module.Mod.Path + } + var r *Retract + wrapError := func(err error) { + *errs = append(*errs, Error{ + Filename: f.Syntax.Name, + Pos: r.Syntax.Start, + Err: err, + }) + } + + for _, r = range f.Retract { + if path == "" { + wrapError(errors.New("no module directive found, so retract cannot be used")) + return // only print the first one of these + } + + args := r.Syntax.Token + if args[0] == "retract" { + args = args[1:] + } + vi, err := parseVersionInterval("retract", path, &args, fix) + if err != nil { + wrapError(err) + } + r.VersionInterval = vi + } +} + // isIndirect reports whether line has a "// indirect" comment, // meaning it is in go.mod only for its effect on indirect dependencies, // so that it can be dropped entirely once the effective version of the @@ -491,13 +548,13 @@ func AutoQuote(s string) string { return s } -func parseVersionInterval(verb string, args *[]string, fix VersionFixer) (VersionInterval, error) { +func parseVersionInterval(verb string, path string, args *[]string, fix VersionFixer) (VersionInterval, error) { toks := *args if len(toks) == 0 || toks[0] == "(" { return VersionInterval{}, fmt.Errorf("expected '[' or version") } if toks[0] != "[" { - v, err := parseVersion(verb, "", &toks[0], fix) + v, err := parseVersion(verb, path, &toks[0], fix) if err != nil { return VersionInterval{}, err } @@ -509,7 +566,7 @@ func parseVersionInterval(verb string, args *[]string, fix VersionFixer) (Versio if len(toks) == 0 { return VersionInterval{}, fmt.Errorf("expected version after '['") } - low, err := parseVersion(verb, "", &toks[0], fix) + low, err := parseVersion(verb, path, &toks[0], fix) if err != nil { return VersionInterval{}, err } @@ -523,7 +580,7 @@ func parseVersionInterval(verb string, args *[]string, fix VersionFixer) (Versio if len(toks) == 0 { return VersionInterval{}, fmt.Errorf("expected version after ','") } - high, err := parseVersion(verb, "", &toks[0], fix) + high, err := parseVersion(verb, path, &toks[0], fix) if err != nil { return VersionInterval{}, err } @@ -631,8 +688,7 @@ func parseVersion(verb string, path string, s *string, fix VersionFixer) (string } } if fix != nil { - var err error - t, err = fix(path, t) + fixed, err := fix(path, t) if err != nil { if err, ok := err.(*module.ModuleError); ok { return "", &Error{ @@ -643,19 +699,23 @@ func parseVersion(verb string, path string, s *string, fix VersionFixer) (string } return "", err } + t = fixed + } else { + cv := module.CanonicalVersion(t) + if cv == "" { + return "", &Error{ + Verb: verb, + ModPath: path, + Err: &module.InvalidVersionError{ + Version: t, + Err: errors.New("must be of the form v1.2.3"), + }, + } + } + t = cv } - if v := module.CanonicalVersion(t); v != "" { - *s = v - return *s, nil - } - return "", &Error{ - Verb: verb, - ModPath: path, - Err: &module.InvalidVersionError{ - Version: t, - Err: errors.New("must be of the form v1.2.3"), - }, - } + *s = t + return *s, nil } func modulePathMajor(path string) (string, error) { |