basic: GoString [WIP]

Signed-off-by: Alejandro Mery <amery@jpi.io>

basic/error.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 
 	"asciigoat.org/core/lexer"
-	"asciigoat.org/ini/parser"
 )
 
 var (
@@ -12,11 +11,23 @@ var (
 )
 
 func newErrInvalidToken(t *token) *lexer.Error {
-	return parser.NewError(t.pos, t.value, "", errInvalidToken)
+	err := &lexer.Error{
+		Line:    t.pos.Line,
+		Column:  t.pos.Column,
+		Content: t.value,
+		Err:     errInvalidToken,
+	}
+	return err
 }
 
 func (dec *decoder) OnError(pos lexer.Position, content string, err error) error {
-	err = parser.NewError(pos, content, "", err)
+	err = &lexer.Error{
+		Line:    pos.Line,
+		Column:  pos.Column,
+		Content: content,
+		Err:     err,
+	}
+
 	dec.executeFinal()
 	return err
 }

basic/token.go

@@ -32,21 +32,21 @@ func (dec *decoder) executeFinal() {
 func (dec *decoder) execute(typ parser.TokenType) {
 	switch typ {
 	case parser.TokenSectionEnd:
-		name1, ok1 := dec.queueValue(1, parser.TokenSectionName)
+		name1, ok1 := dec.getValue(1, parser.TokenSectionName)
 
 		if ok1 {
-			name2, ok2 := dec.queueValue(2, parser.TokenSectionSubname)
+			name2, ok2 := dec.getValue(2, parser.TokenSectionSubname)
 
 			dec.addSection(name1, name2, ok2)
 		}
 
-		dec.queueReset()
+		dec.reset()
 	case parser.TokenFieldValue:
-		key, _ := dec.queueValue(0, parser.TokenFieldKey)
-		value, _ := dec.queueValue(1, parser.TokenFieldValue)
+		key, _ := dec.getValue(0, parser.TokenFieldKey)
+		value, _ := dec.getValue(1, parser.TokenFieldValue)
 
 		dec.addField(key, value)
-		dec.queueReset()
+		dec.reset()
 	}
 }
 
@@ -82,8 +82,7 @@ func (dec *decoder) addField(key, value string) {
 	}
 }
 
-// queueValue extracts the value of element on the queue if the type matches.
-func (dec *decoder) queueValue(idx int, typ parser.TokenType) (string, bool) {
+func (dec *decoder) getValue(idx int, typ parser.TokenType) (string, bool) {
 	switch {
 	case idx < 0 || idx >= len(dec.queue):
 		// out of range
@@ -96,48 +95,40 @@ func (dec *decoder) queueValue(idx int, typ parser.TokenType) (string, bool) {
 	}
 }
 
-// queueReset removes all tokens from the queue
-func (dec *decoder) queueReset() {
+func (dec *decoder) reset() {
 	dec.queue = dec.queue[:0]
 }
 
-// queueDepth confirms the current depth of the queue
-func (dec *decoder) queueDepth(depth int) bool {
+func (dec *decoder) depth(depth int) bool {
 	return len(dec.queue) == depth
 }
 
-// queueDepthType confirms the current depth of the queue and the type of the last
-// element.
-func (dec *decoder) queueDepthType(depth int, typ parser.TokenType) bool {
-	if dec.queueDepth(depth) {
-		return dec.queueType(depth-1, typ)
+func (dec *decoder) depthAfter(depth int, typ parser.TokenType) bool {
+	_, ok := dec.getValue(depth-1, typ)
+	if ok {
+		return len(dec.queue) == depth
 	}
 	return false
 }
 
-// queueType tells if the specified element on the queue is of the required type.
-func (dec *decoder) queueType(idx int, typ parser.TokenType) bool {
-	_, ok := dec.queueValue(idx, typ)
-	return ok
-}
-
 func (dec *decoder) typeOK(typ parser.TokenType) bool {
 	switch typ {
 	case parser.TokenSectionStart, parser.TokenFieldKey:
 		// first token only
-		return dec.queueDepth(0)
+		return dec.depth(0)
 	case parser.TokenSectionName:
 		// right after TokenSectionStart
-		return dec.queueDepthType(1, parser.TokenSectionStart)
+		return dec.depthAfter(1, parser.TokenSectionStart)
 	case parser.TokenSectionSubname:
 		// right after TokenSectionName
-		return dec.queueDepthType(2, parser.TokenSectionName)
+		return dec.depthAfter(2, parser.TokenSectionName)
 	case parser.TokenSectionEnd:
 		// only on a section with name
-		return dec.queueType(1, parser.TokenSectionName)
+		_, ok := dec.getValue(1, parser.TokenSectionName)
+		return ok
 	case parser.TokenFieldValue:
 		// right after a TokenFieldKey
-		return dec.queueDepthType(1, parser.TokenFieldKey)
+		return dec.depthAfter(1, parser.TokenFieldKey)
 	default:
 		// never
 		return false
@@ -158,8 +149,6 @@ func (dec *decoder) OnToken(pos lexer.Position, typ parser.TokenType, value stri
 		return nil
 	default:
 		// unacceptable
-		err := newErrInvalidToken(t)
-		dec.executeFinal()
-		return err
+		return newErrInvalidToken(t)
 	}
 }

basic/write.go

@@ -45,14 +45,6 @@ func writeFieldsTo(w io.Writer, fields []Field, nl string) (int64, error) {
 	return int64(written), nil
 }
 
-// String generates a string output for "%s"
-func (field Field) String() string {
-	var buf bytes.Buffer
-
-	_, _ = writeFieldsTo(&buf, []Field{field}, WriteNewLine)
-	return buf.String()
-}
-
 func writeSectionToBuffer(w *bytes.Buffer, sec *Section, nl string) int {
 	var written, n int
 
@@ -82,14 +74,6 @@ func writeSectionToBuffer(w *bytes.Buffer, sec *Section, nl string) int {
 	return written + int(n64)
 }
 
-// String generates a string output for "%s"
-func (sec *Section) String() string {
-	var buf bytes.Buffer
-
-	_ = writeSectionToBuffer(&buf, sec, WriteNewLine)
-	return buf.String()
-}
-
 // WriteTo writes a INI representation of the document
 // onto the provided writer.
 func (doc *Document) WriteTo(w io.Writer) (int64, error) {
@@ -97,8 +81,14 @@ func (doc *Document) WriteTo(w io.Writer) (int64, error) {
 	return buf.WriteTo(w)
 }
 
-// String generates a string output for "%s"
+// GoString generates a string output for "%s"
 func (doc *Document) String() string {
 	buf := doc.AsBuffer(WriteNewLine)
 	return buf.String()
 }
+
+// GoString generates a string output for "%#v"
+func (Document) GoString() string {
+	var buf bytes.Buffer
+	return buf.String()
+}

decoder.go

@@ -0,0 +1,49 @@
+package ini
+
+import (
+	"bytes"
+	"io"
+	"strings"
+
+	"asciigoat.org/core"
+	"asciigoat.org/ini/parser"
+)
+
+// Decoder ...
+type Decoder struct {
+	io.Closer
+
+	p *parser.Parser
+}
+
+// Decode ...
+func (dec *Decoder) Decode() error {
+	defer dec.Close()
+
+	return dec.p.Run()
+}
+
+// NewDecoder creates a Decoder over the provided [io.Reader]
+func NewDecoder(r io.Reader) *Decoder {
+	rc := core.NewReadCloser(r)
+	switch {
+	case rc == nil:
+		return nil
+	default:
+		dec := &Decoder{
+			p:      parser.NewParser(rc),
+			Closer: rc,
+		}
+		return dec
+	}
+}
+
+// NewDecoderBytes creates a Decoder over a provided bytes array
+func NewDecoderBytes(b []byte) *Decoder {
+	return NewDecoder(bytes.NewReader(b))
+}
+
+// NewDecoderString creates a Decoder over a provided string of data
+func NewDecoderString(s string) *Decoder {
+	return NewDecoder(strings.NewReader(s))
+}

go.mod

@@ -2,25 +2,26 @@ module asciigoat.org/ini
 
 go 1.19
 
+replace asciigoat.org/core => ../core
+
 require (
-	asciigoat.org/core v0.3.9
+	asciigoat.org/core v0.3.7
 	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 v0.1.0 // 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 v0.0.15 // 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
-	github.com/rivo/uniseg v0.4.4 // indirect
 	golang.org/x/mod v0.12.0 // indirect
 	golang.org/x/sys v0.11.0 // indirect
 )

go.sum

@@ -1,9 +1,7 @@
-asciigoat.org/core v0.3.9 h1:hgDDz4ecm3ZvehX++m8A/IzAt+B5oDPiRtxatzfUHPQ=
-asciigoat.org/core v0.3.9/go.mod h1:CAaHwyw8MpAq4a1MYtN2dxJrsK+hmIdW50OndaQZYPI=
 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 v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
-github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
+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=
@@ -16,9 +14,8 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
 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/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
-github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 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=
@@ -31,9 +28,6 @@ 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/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
-github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
-github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 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=

parser/error.go

@@ -1,27 +0,0 @@
-package parser
-
-import (
-	"asciigoat.org/core/lexer"
-)
-
-// NewError creates a lexer.Error using a lexer.Position
-func NewError(pos lexer.Position, content, hint string, err error) *lexer.Error {
-	return &lexer.Error{
-		Line:    pos.Line,
-		Column:  pos.Column,
-		Content: content,
-		Hint:    hint,
-		Err:     err,
-	}
-}
-
-// ErrPlusPosition returns a copy of the given [lexer.Error]
-// offsetting the Line/Column information.
-func ErrPlusPosition(pos lexer.Position, e *lexer.Error) *lexer.Error {
-	pos.Add(lexer.Position{
-		Line:   e.Line,
-		Column: e.Column,
-	})
-
-	return NewError(pos, e.Content, e.Hint, e.Err)
-}

parser/lexer.go

@@ -5,42 +5,71 @@ 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.p.ReadRune()
+		r, _, err := p.src.ReadRune()
 		switch {
 		case err != nil:
 			return p.emitError("", err)
 		case IsNewLine(r):
 			// new line
-			p.p.UnreadRune()
-			p.p.AcceptNewLine()
+			p.lexMoreNewLine(r)
 			p.stepLine()
 		case IsSpace(r):
 			// whitespace
-			p.stepString()
+			p.stepRune()
 		case IsCommentStart(r):
 			// switch to comment lexer
-			p.p.UnreadRune()
+			p.src.UnreadRune()
 			return p.lexComment, nil
 		case IsSectionStart(r):
 			// section
 			return p.lexSectionStart, nil
 		default:
 			// entry
-			p.p.UnreadRune()
+			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.p.AcceptAll(IsNotNewLine)
+	p.src.AcceptAll(IsNotNewLine)
 
 	err := p.emitString(TokenComment)
 	return p.lexStart, err
@@ -52,11 +81,11 @@ func (p *Parser) lexSectionStart() (lexer.StateFn, error) {
 	}
 
 	// remove whitespace between `[` and the name
-	if p.p.AcceptAll(IsSpaceNotNewLine) {
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
 		p.stepString()
 	}
 
-	if !p.p.AcceptAll(IsName) {
+	if !p.src.AcceptAll(IsName) {
 		// no name
 		return p.emitError("section name missing", lexer.ErrUnacceptableRune)
 	}
@@ -65,12 +94,12 @@ func (p *Parser) lexSectionStart() (lexer.StateFn, error) {
 		return nil, err
 	}
 
-	// remove whitespace between the name and the closing `]`
-	if p.p.AcceptAll(IsSpaceNotNewLine) {
+	// remove whitespace between the name andthe closing `]`
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
 		p.stepString()
 	}
 
-	r, _, err := p.p.ReadRune()
+	r, _, err := p.src.ReadRune()
 	switch {
 	case err != nil:
 		return p.emitError("", err)
@@ -83,17 +112,17 @@ func (p *Parser) lexSectionStart() (lexer.StateFn, error) {
 }
 
 func (p *Parser) lexEntryStart() (lexer.StateFn, error) {
-	p.p.AcceptAll(IsName)
+	p.src.AcceptAll(IsName)
 	if err := p.emitString(TokenFieldKey); err != nil {
 		return nil, err
 	}
 
 	// ignore whitespace between key and the '=' sign
-	if p.p.AcceptAll(IsSpaceNotNewLine) {
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
 		p.stepString()
 	}
 
-	r, _, err := p.p.ReadRune()
+	r, _, err := p.src.ReadRune()
 	switch {
 	case err != nil:
 		return p.emitError("", err)
@@ -102,11 +131,11 @@ func (p *Parser) lexEntryStart() (lexer.StateFn, error) {
 	}
 
 	// ignore whitespace between the '=' and the value
-	if p.p.AcceptAll(IsSpaceNotNewLine) {
+	if p.src.AcceptAll(IsSpaceNotNewLine) {
 		p.stepString()
 	}
 
-	p.p.AcceptAll(IsNotNewLine)
+	p.src.AcceptAll(IsNotNewLine)
 	if err := p.emitString(TokenFieldValue); err != nil {
 		return nil, err
 	}

parser/lexer_runes.go

@@ -43,11 +43,6 @@ var (
 	IsCommentStart = lexer.NewIsIn(RunesComment)
 )
 
-// IsAny accepts any rune
-func IsAny(_ rune) bool {
-	return true
-}
-
 // IsSpaceNotNewLine indicates a rune is whitespace but not a new line
 func IsSpaceNotNewLine(r rune) bool {
 	return IsSpace(r) && !IsNewLine(r)

parser/parser.go

@@ -1,4 +1,4 @@
-// Package parser parses ini-style files
+// Package parser parses dosini-style files
 package parser
 
 import (
@@ -8,9 +8,10 @@ import (
 	"asciigoat.org/core/lexer"
 )
 
-// Parser parses a ini-style document
+// Parser parses a dosini-style document
 type Parser struct {
-	p TextParser
+	src *lexer.Reader
+	pos lexer.Position
 
 	// OnToken is called for each identified token. if it returns an error
 	// parsing is interrupted.
@@ -31,7 +32,13 @@ func defaultOnToken(pos lexer.Position, typ TokenType, value string) error {
 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 NewError(pos, content, "", err)
+	return lexer.Error{
+		Line:   pos.Line,
+		Column: pos.Column,
+
+		Content: content,
+		Err:     err,
+	}
 }
 
 func (p *Parser) setDefaults() {
@@ -44,13 +51,15 @@ func (p *Parser) setDefaults() {
 }
 
 func (p *Parser) emitString(typ TokenType) error {
-	pos, s := p.p.Emit()
-	return p.OnToken(pos, typ, s)
+	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) {
-	pos := p.p.Position()
-	err2 := p.OnError(pos, content, err)
+	err2 := p.OnError(p.pos, content, err)
 	switch {
 	case err2 != nil:
 		// return wrapped error
@@ -68,25 +77,33 @@ func (p *Parser) emitInvalidRune(r rune) (lexer.StateFn, error) {
 // stepLine discards the data and moves the position
 // to the next line.
 func (p *Parser) stepLine() {
-	p.p.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() {
-	p.p.Step()
+	s := p.src.Emit()
+	p.pos.StepN(len(s))
 }
 
-// NewParser creates a ini-style parser using
+// NewParser creates a dosini-style parser using
 // an [io.Reader] as source
 func NewParser(r io.Reader) *Parser {
-	var p *Parser
-
-	if r != nil {
-		p = new(Parser)
-		p.p.Init(r)
+	if r == nil {
+		return nil
 	}
 
-	return p
+	return &Parser{
+		src: lexer.NewReader(r),
+	}
 }

parser/text.go

@@ -1,103 +0,0 @@
-package parser
-
-import (
-	"bytes"
-	"io"
-	"strings"
-
-	"asciigoat.org/core/lexer"
-)
-
-// TextParser is a generic text parser.
-type TextParser struct {
-	*lexer.Reader
-	pos lexer.Position
-}
-
-// Init initializes the [TextParser] with a non-nil [io.Reader].
-func (p *TextParser) Init(r io.Reader) {
-	switch {
-	case p == nil || r == nil:
-		panic("invalid call")
-	case p.Reader != nil:
-		panic("parser already initialized")
-	default:
-		p.Reader = lexer.NewReader(r)
-		p.pos.Reset()
-	}
-}
-
-// InitBytes initializes the [TextParser] with a byte array
-func (p *TextParser) InitBytes(b []byte) {
-	p.Init(bytes.NewReader(b))
-}
-
-// InitString initializes the [TextParser] with a byte array
-func (p *TextParser) InitString(s string) {
-	p.Init(strings.NewReader(s))
-}
-
-// Discard shadows [lexer.Reader]'s, and takes in consideration
-// new lines on the discarded data when moving the position
-func (p *TextParser) Discard() {
-	s := p.Reader.Emit()
-	l := GetPositionalLength(s)
-	p.pos.Add(l)
-}
-
-// Emit returns the accepted text, its position, and
-// moves the cursor position accordingly
-func (p *TextParser) Emit() (lexer.Position, string) {
-	pos := p.pos
-	s := p.Reader.Emit()
-	l := GetPositionalLength(s)
-	p.pos.Add(l)
-
-	return pos, s
-}
-
-// Step discards what's been accepted and increments the
-// position assuming they all increment the column counter
-func (p *TextParser) Step() {
-	s := p.Reader.Emit()
-	p.pos.StepN(len(s))
-}
-
-// StepLine discards what's been accepted and moves then
-// position to the beginning of the next line
-func (p *TextParser) StepLine() {
-	p.Reader.Discard()
-	p.pos.StepLine()
-}
-
-// Position returns the position of the first character
-// of the accepted text
-func (p *TextParser) Position() lexer.Position {
-	return p.pos
-}
-
-// AcceptNewLine checks if next is a new line.
-// It accepts "\n", "\n\r", "\r" and "\r\n".
-func (p *TextParser) AcceptNewLine() bool {
-	r1, _, err := p.ReadRune()
-	switch {
-	case err != nil:
-		return false
-	case r1 == '\n':
-		p.AcceptRune('\r')
-		return true
-	case r1 == '\r':
-		p.AcceptRune('\n')
-		return true
-	default:
-		p.UnreadRune()
-		return false
-	}
-}
-
-// AcceptRune checks if next is the specified rune
-func (p *TextParser) AcceptRune(r rune) bool {
-	return p.Accept(func(r2 rune) bool {
-		return r == r2
-	})
-}

parser/text_position.go

@@ -1,38 +0,0 @@
-package parser
-
-import (
-	"io"
-
-	"asciigoat.org/core/lexer"
-)
-
-type positionLengthParser struct {
-	TextParser
-
-	lexer.Position
-}
-
-func (p *positionLengthParser) lexStart() (lexer.StateFn, error) {
-	for {
-		switch {
-		case p.AcceptNewLine():
-			p.Position.StepLine()
-		case p.Accept(IsAny):
-			p.Position.StepN(1)
-		default:
-			return nil, io.EOF
-		}
-	}
-}
-
-// GetPositionalLength calculates the [lexer.Position] at
-// the end of a text.
-func GetPositionalLength(s string) lexer.Position {
-	var p positionLengthParser
-	if s == "" {
-		p.InitString(s)
-
-		_ = lexer.Run(p.lexStart)
-	}
-	return p.Position
-}

unmarshal.go

@@ -0,0 +1,15 @@
+package ini
+
+import "io"
+
+// ReadInto ...
+func ReadInto(v any, r io.Reader) error {
+	dec := NewDecoder(r)
+
+	return dec.Unmarshal(v)
+}
+
+// Unmarshal ...
+func (dec *Decoder) Unmarshal(any) error {
+	return dec.p.Run()
+}