Merge pull request 'parser: implement basic dosini parsing' (#2)

Reviewed-on: #2

Makefile

@@ -0,0 +1,50 @@
+.PHONY: all clean generate fmt
+.PHONY: tidy get build test up
+
+GO ?= go
+GOFMT ?= gofmt
+GOFMT_FLAGS = -w -l -s
+GOGENERATE_FLAGS = -v
+
+GOPATH ?= $(shell $(GO) env GOPATH)
+GOBIN ?= $(GOPATH)/bin
+
+TMPDIR ?= $(CURDIR)/.tmp
+TOOLSDIR = $(CURDIR)/tools
+
+REVIVE_CONF ?= $(TOOLSDIR)/revive.toml
+REVIVE_RUN_ARGS ?= -config $(REVIVE_CONF) -formatter friendly
+REVIVE ?= $(GO) run -v github.com/mgechev/revive
+
+V = 0
+Q = $(if $(filter 1,$V),,@)
+M = $(shell if [ "$$(tput colors 2> /dev/null || echo 0)" -ge 8 ]; then printf "\033[34;1m▶\033[0m"; else printf "▶"; fi)
+
+all: get generate tidy build
+
+clean: ; $(info $(M) cleaning…)
+	rm -rf $(TMPDIR)
+
+fmt: ; $(info $(M) reformatting sources…)
+	$Q find . -name '*.go' | xargs -r $(GOFMT) $(GOFMT_FLAGS)
+
+tidy: | fmt ; $(info $(M) tidying up…)
+	$Q $(GO) mod tidy
+	$Q $(GO) vet ./...
+	$Q $(REVIVE) $(REVIVE_RUN_ARGS) ./...
+
+get: ; $(info $(M) downloading dependencies…)
+	$Q $(GO) get -v -tags tools ./...
+
+build: ; $(info $(M) building…)
+	$Q $(GO) build -v ./...
+
+test: ; $(info $(M) building…)
+	$Q $(GO) test ./...
+
+up: ; $(info $(M) updating dependencies…)
+	$Q $(GO) get -u -v ./...
+	$Q $(GO) mod tidy
+
+generate: ; $(info $(M) generating data…)
+	$Q git grep -l '^//go:generate' | sort -uV | xargs -r -n1 $(GO) generate $(GOGENERATE_FLAGS)

go.mod

@@ -1,3 +1,25 @@
 module asciigoat.org/ini
 
 go 1.19
+
+require (
+	asciigoat.org/core v0.3.6
+	github.com/mgechev/revive v1.3.3
+	golang.org/x/tools v0.12.0
+)
+
+require (
+	github.com/BurntSushi/toml v1.3.2 // indirect
+	github.com/chavacava/garif v0.0.0-20230608123814-4bd63c2919ab // indirect
+	github.com/fatih/color v1.15.0 // indirect
+	github.com/fatih/structtag v1.2.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/sys v0.11.0 // indirect
+)

go.sum

@@ -0,0 +1,52 @@
+asciigoat.org/core v0.3.6 h1:b1vL090OxylmSOwLQryjrmC8FhhCtktMyeJSy1e6LwI=
+asciigoat.org/core v0.3.6/go.mod h1:tXj+JUutxRbcO40ZQRuUVaZ4rnYz1kAZ0nblisV8u74=
+github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
+github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/chavacava/garif v0.0.0-20230608123814-4bd63c2919ab h1:5JxePczlyGAtj6R1MUEFZ/UFud6FfsOejq7xLC2ZIb0=
+github.com/chavacava/garif v0.0.0-20230608123814-4bd63c2919ab/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.15.0 h1:kOqh6YHBtK8aywxGerMG2Eq3H6Qgoqeo13Bk2Mv/nBs=
+github.com/fatih/color v1.15.0/go.mod h1:0h5ZqXfHYED7Bhv2ZJamyIOUej9KtShiJESRwBDUSsw=
+github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
+github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 h1:zpIH83+oKzcpryru8ceC6BxnoG8TBrhgAvRg8obzup0=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
+github.com/mgechev/revive v1.3.3 h1:GUWzV3g185agbHN4ZdaQvR6zrLVYTUSA2ktvIinivK0=
+github.com/mgechev/revive v1.3.3/go.mod h1:NhpOtVtDbjYNDj697eDUBTobijCDHQKar4HDKc0TuTo=
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/tools v0.12.0 h1:YW6HUoUmYBpwSgyaGaZq1fHjrBjX1rlpZ54T6mu2kss=
+golang.org/x/tools v0.12.0/go.mod h1:Sc0INKfu04TlqNoRA1hgpFZbhYXHPr4V5DzpSBTPqQM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

parser/lexer.go

@@ -0,0 +1,144 @@
+package parser
+
+import "asciigoat.org/core/lexer"
+
+// Run parses the source
+func (p *Parser) Run() error {
+	p.setDefaults()
+	p.pos.Reset()
+
+	return lexer.Run(p.lexStart)
+}
+
+func (p *Parser) lexStart() (lexer.StateFn, error) {
+	for {
+		r, _, err := p.src.ReadRune()
+		switch {
+		case err != nil:
+			return p.emitError("", err)
+		case IsNewLine(r):
+			// new line
+			p.lexMoreNewLine(r)
+			p.stepLine()
+		case IsSpace(r):
+			// whitespace
+			p.stepRune()
+		case IsCommentStart(r):
+			// switch to comment lexer
+			p.src.UnreadRune()
+			return p.lexComment, nil
+		case IsSectionStart(r):
+			// section
+			return p.lexSectionStart, nil
+		default:
+			// entry
+			p.src.UnreadRune()
+			return p.lexEntryStart, nil
+		}
+	}
+}
+
+func (p *Parser) lexMoreNewLine(r1 rune) {
+	// r1 is warrantied to be either '\r' or '\n'
+	r2, _, err := p.src.ReadRune()
+	switch r1 {
+	case '\n':
+		switch {
+		case r2 == '\r':
+			// LN CR
+		case err == nil:
+			// LN
+			p.src.UnreadRune()
+		default:
+			// LN EOF
+		}
+	case '\r':
+		switch {
+		case r2 == '\n':
+			// CR LN
+		case err == nil:
+			// CR
+			p.src.UnreadRune()
+		default:
+			// CR EOF
+		}
+	default:
+		panic("unreachable")
+	}
+}
+
+func (p *Parser) lexComment() (lexer.StateFn, error) {
+	// until the end of the line
+	p.src.AcceptAll(IsNotNewLine)
+
+	err := p.emitString(TokenComment)
+	return p.lexStart, err
+}
+
+func (p *Parser) lexSectionStart() (lexer.StateFn, error) {
+	if err := p.emitString(TokenSectionStart); err != nil {
+		return nil, err
+	}
+
+	// remove whitespace between `[` and the name
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
+		p.stepString()
+	}
+
+	if !p.src.AcceptAll(IsName) {
+		// no name
+		return p.emitError("section name missing", lexer.ErrUnacceptableRune)
+	}
+
+	if err := p.emitString(TokenSectionName); err != nil {
+		return nil, err
+	}
+
+	// remove whitespace between the name andthe closing `]`
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
+		p.stepString()
+	}
+
+	r, _, err := p.src.ReadRune()
+	switch {
+	case err != nil:
+		return p.emitError("", err)
+	case IsSectionEnd(r):
+		err := p.emitString(TokenSectionEnd)
+		return p.lexStart, err
+	default:
+		return p.emitInvalidRune(r)
+	}
+}
+
+func (p *Parser) lexEntryStart() (lexer.StateFn, error) {
+	p.src.AcceptAll(IsName)
+	if err := p.emitString(TokenFieldKey); err != nil {
+		return nil, err
+	}
+
+	// ignore whitespace between key and the '=' sign
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
+		p.stepString()
+	}
+
+	r, _, err := p.src.ReadRune()
+	switch {
+	case err != nil:
+		return p.emitError("", err)
+	case r != RuneFieldEqual:
+		return p.emitInvalidRune(r)
+	}
+
+	// ignore whitespace between the '=' and the value
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
+		p.stepString()
+	}
+
+	p.src.AcceptAll(IsNotNewLine)
+	if err := p.emitString(TokenFieldValue); err != nil {
+		return nil, err
+	}
+
+	return p.lexStart, err
+}

parser/lexer_runes.go

@@ -0,0 +1,67 @@
+package parser
+
+import (
+	"strings"
+
+	"asciigoat.org/core/lexer"
+)
+
+const (
+	RuneComment      = ';' // RuneComment is the standard dosini comment character
+	RuneCommentExtra = '#' // RuneCommentExtra is UNIX shell's comment character
+	RuneSectionStart = '[' // RuneSectionStart indicates the start of a section declaration
+	RuneSectionEnd   = ']' // RuneSectionEnd indiciates the end of a section declaration
+	RuneFieldEqual   = '=' // RuneFieldEqual separates field keys from their values
+)
+
+var (
+	// RunesComment is a string containing all runes acceptable to start comments
+	RunesComment = string([]rune{
+		RuneComment,
+		RuneCommentExtra,
+	})
+	// RunesSpecial is a string containing all the runes with special meaning
+	RunesSpecial = string([]rune{
+		RuneComment,
+		RuneCommentExtra,
+		RuneSectionStart,
+		RuneSectionEnd,
+		RuneFieldEqual,
+	})
+)
+
+var (
+	// IsNewLine tells if the rune indicates a line break or the start of one
+	IsNewLine = lexer.NewIsIn("\r\n")
+	// IsNotNewLine tells if the rune is not a line break nor the start of one
+	IsNotNewLine = lexer.NewIsNot(IsNewLine)
+	// IsSpace tells if the rune is considered whitespace by Unicode
+	IsSpace = lexer.IsSpace
+	// IsNotSpace tells if the rune is not considered whitespace by Unicode
+	IsNotSpace = lexer.NewIsNot(IsSpace)
+	// IsCommentStart ...
+	IsCommentStart = lexer.NewIsIn(RunesComment)
+)
+
+// IsSpaceNotNewLine indicates a rune is whitespace but not a new line
+func IsSpaceNotNewLine(r rune) bool {
+	return IsSpace(r) && !IsNewLine(r)
+}
+
+// IsSectionStart indicates the rune starts the section declaration
+func IsSectionStart(r rune) bool { return r == RuneSectionStart }
+
+// IsSectionEnd indicates the rune ends the section declaration
+func IsSectionEnd(r rune) bool { return r == RuneSectionEnd }
+
+// IsName indicates a rune is acceptable for section or field names
+func IsName(r rune) bool {
+	switch {
+	case IsSpace(r):
+		return false
+	case strings.ContainsRune(RunesSpecial, r):
+		return false
+	default:
+		return true
+	}
+}

parser/parser.go

@@ -0,0 +1,109 @@
+// Package parser parses dosini-style files
+package parser
+
+import (
+	"io"
+	"log"
+
+	"asciigoat.org/core/lexer"
+)
+
+// Parser parses a dosini-style document
+type Parser struct {
+	src *lexer.Reader
+	pos lexer.Position
+
+	// OnToken is called for each identified token. if it returns an error
+	// parsing is interrupted.
+	OnToken func(pos lexer.Position, typ TokenType, value string) error
+
+	// OnError is called in case of a parsing error, and it's allowed
+	// to replace the error returned by [Parser.Run].
+	// OnError is called for io.EOF, but [Parser.Run] will consider it
+	// normal termination.
+	OnError func(pos lexer.Position, content string, err error) error
+}
+
+func defaultOnToken(pos lexer.Position, typ TokenType, value string) error {
+	log.Printf("%s:%v:%v: %q", typ, pos.Line, pos.Column, value)
+	return nil
+}
+
+func defaultOnError(pos lexer.Position, content string, err error) error {
+	log.Printf("%s:%v:%v: %q: %s", "error", pos.Line, pos.Column, content, err)
+
+	return lexer.Error{
+		Line:   pos.Line,
+		Column: pos.Column,
+
+		Content: content,
+		Err:     err,
+	}
+}
+
+func (p *Parser) setDefaults() {
+	if p.OnToken == nil {
+		p.OnToken = defaultOnToken
+	}
+	if p.OnError == nil {
+		p.OnError = defaultOnError
+	}
+}
+
+func (p *Parser) emitString(typ TokenType) error {
+	s := p.src.Emit()
+	err := p.OnToken(p.pos, typ, s)
+	p.pos.StepN(len(s))
+
+	return err
+}
+
+func (p *Parser) emitError(content string, err error) (lexer.StateFn, error) {
+	err2 := p.OnError(p.pos, content, err)
+	switch {
+	case err2 != nil:
+		// return wrapped error
+		return nil, err2
+	default:
+		// return original error
+		return nil, err
+	}
+}
+
+func (p *Parser) emitInvalidRune(r rune) (lexer.StateFn, error) {
+	return p.emitError(string([]rune{r}), lexer.ErrUnacceptableRune)
+}
+
+// stepLine discards the data and moves the position
+// to the next line.
+func (p *Parser) stepLine() {
+	p.src.Discard()
+	p.pos.StepLine()
+}
+
+// stepRune discards the data and moves the position
+// one rune forward on the same line.
+func (p *Parser) stepRune() {
+	p.src.Discard()
+	p.pos.Step()
+}
+
+// stepString discards the data and moves the position
+// forward on the same line the length of the discarded
+// content.
+func (p *Parser) stepString() {
+	s := p.src.Emit()
+	p.pos.StepN(len(s))
+}
+
+// NewParser creates a dosini-style parser using
+// an [io.Reader] as source
+func NewParser(r io.Reader) *Parser {
+	if r == nil {
+		return nil
+	}
+
+	return &Parser{
+		src: lexer.NewReader(r),
+	}
+}

parser/token.go

@@ -0,0 +1,31 @@
+package parser
+
+//go:generate go run golang.org/x/tools/cmd/stringer -type=TokenType
+
+// A TokenType is a type of Token
+type TokenType uint
+
+const (
+	// TokenUnknown represents a Token that hasn't been identified
+	TokenUnknown TokenType = iota
+	// TokenSectionStart indicates the opening marker of a section declaration.
+	// The left squared bracket.
+	TokenSectionStart
+	// TokenSectionEnd indicates the closing marker of a section declaration.
+	// The right squared bracket.
+	TokenSectionEnd
+	// TokenSectionName represents the section name between the squared brackets
+	TokenSectionName
+	// TokenSectionSubname represents a secondary name in the section represented
+	// between quotes after the section name.
+	// e.g.
+	// [section_name "section_subname"]
+	TokenSectionSubname
+	// TokenComment represents a comment, including the initial ';' or '#' until
+	// the end of the line.
+	TokenComment
+	// TokenFieldKey represents a field name in a `key = value` entry
+	TokenFieldKey
+	// TokenFieldValue represents a field value in a `key = value` entry
+	TokenFieldValue
+)

parser/tokentype_string.go

@@ -0,0 +1,30 @@
+// Code generated by "stringer -type=TokenType"; DO NOT EDIT.
+
+package parser
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[TokenUnknown-0]
+	_ = x[TokenSectionStart-1]
+	_ = x[TokenSectionEnd-2]
+	_ = x[TokenSectionName-3]
+	_ = x[TokenSectionSubname-4]
+	_ = x[TokenComment-5]
+	_ = x[TokenFieldKey-6]
+	_ = x[TokenFieldValue-7]
+}
+
+const _TokenType_name = "TokenUnknownTokenSectionStartTokenSectionEndTokenSectionNameTokenSectionSubnameTokenCommentTokenFieldKeyTokenFieldValue"
+
+var _TokenType_index = [...]uint8{0, 12, 29, 44, 60, 79, 91, 104, 119}
+
+func (i TokenType) String() string {
+	if i >= TokenType(len(_TokenType_index)-1) {
+		return "TokenType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _TokenType_name[_TokenType_index[i]:_TokenType_index[i+1]]
+}

tools/revive.toml

@@ -0,0 +1,35 @@
+ignoreGeneratedHeader = false
+severity = "error"
+confidence = 0.8
+errorCode = 1
+warningCode = 0
+enableAllRules = true
+
+[rule.function-length]
+  arguments = [40,0]
+  severity = "warning"
+[rule.function-result-limit]
+  arguments = [3]
+[rule.argument-limit]
+  arguments = [5]
+[rule.cognitive-complexity]
+  arguments = [7]
+[rule.cyclomatic]
+  arguments = [10]
+[rule.line-length-limit]
+  arguments = [100]
+  severity = "warning"
+[rule.comment-spacings]
+  severity = "warning"
+[rule.empty-lines]
+  severity = "warning"
+
+# Disabled rules
+[rule.max-public-structs]
+  disabled = true
+[rule.file-header]
+  disabled = true
+[rule.add-constant]
+  disabled = true
+[rule.banned-characters]
+  disabled = true

tools/tools.go

@@ -0,0 +1,8 @@
+//go:build tools
+
+package tools
+
+import (
+	_ "github.com/mgechev/revive"
+	_ "golang.org/x/tools/cmd/stringer"
+)