wrap, new

README.md

@@ -45,7 +45,7 @@ var reader io.Reader
 
 // ...
 
-var runeReader io.RuneReader = utf8.RuneReaderWrap(reader)
+var runeReader io.RuneReader = utf8.NewRuneReader(reader)
 
 // ...
 
@@ -60,7 +60,7 @@ var reader io.Reader
 
 // ...
 
-var runeScanner io.RuneScanner := utf8.RuneScannerWrap(reader)
+var runeScanner io.RuneScanner := utf8.NewRuneScanner(reader)
 
 // ...
 

runereader.go

@@ -4,22 +4,27 @@ import (
 	"io"
 )
 
+var _ io.RuneReader = WrapRuneReader(nil)
+var _ io.RuneReader = NewRuneReader(nil)
+
 // A utf8.RuneReader implements the io.RuneReader interface by reading from an io.Reader.
 type RuneReader struct {
 	reader io.Reader
 }
 
-func RuneReaderWrap(reader io.Reader) RuneReader {
+func WrapRuneReader(reader io.Reader) RuneReader {
 	return RuneReader{
 		reader: reader,
 	}
 }
 
-func (receiver *RuneReader) ReadRune() (rune, int, error) {
+func NewRuneReader(reader io.Reader) *RuneReader {
-	if nil == receiver {
+	var runereader RuneReader = WrapRuneReader(reader)
-		return 0, 0, errNilReceiver
-	}
 
+	return &runereader
+}
+
+func (receiver RuneReader) ReadRune() (rune, int, error) {
 	reader := receiver.reader
 	if nil == reader {
 		return 0, 0, errNilReader

runereader_test.go

@@ -295,7 +295,7 @@ func TestRuneReader(t *testing.T) {
 
 
 	for testNumber, test := range tests {
-		runeReader := RuneReaderWrap(test.Reader)
+		runeReader := WrapRuneReader(test.Reader)
 
 		actualRune, actualInt, err := runeReader.ReadRune()
 		if nil != err {
@@ -563,7 +563,7 @@ func TestRuneReaders(t *testing.T) {
 
 		var runeNumber int
 		for {
-			runeReader := RuneReaderWrap(test.Reader)
+			runeReader := WrapRuneReader(test.Reader)
 
 			actualRune, actualInt, err := runeReader.ReadRune()
 			if nil != err && io.EOF != err {

runescanner.go

@@ -4,6 +4,8 @@ import (
 	"io"
 )
 
+var _ io.RuneScanner = NewRuneScanner(nil)
+
 // A utf8.RuneScanner implements the io.RuneScanner interface by reading from an io.Reader.
 type RuneScanner struct {
 	reader io.Reader
@@ -15,12 +17,18 @@ type RuneScanner struct {
 	peeked bool
 }
 
-func RuneScannerWrap(reader io.Reader) RuneScanner {
+func WrapRuneScanner(reader io.Reader) RuneScanner {
 	return RuneScanner{
 		reader: reader,
 	}
 }
 
+func NewRuneScanner(reader io.Reader) *RuneScanner {
+	var runescanner RuneScanner = WrapRuneScanner(reader)
+
+	return &runescanner
+}
+
 func (receiver *RuneScanner) ReadRune() (rune, int, error) {
 	if nil == receiver {
 		return RuneError, 0, errNilReceiver

runescanner_test.go

@@ -295,7 +295,7 @@ func TestRuneScanner(t *testing.T) {
 
 
 	for testNumber, test := range tests {
-		runeReader := RuneScannerWrap(test.Reader)
+		runeReader := WrapRuneScanner(test.Reader)
 
 		actualRune, actualInt, err := runeReader.ReadRune()
 		if nil != err {
@@ -563,7 +563,7 @@ func TestRuneScanners(t *testing.T) {
 
 		var runeNumber int
 		for {
-			runeReader := RuneScannerWrap(test.Reader)
+			runeReader := WrapRuneScanner(test.Reader)
 
 			actualRune, actualInt, err := runeReader.ReadRune()
 			if nil != err && io.EOF != err {
@@ -616,7 +616,7 @@ func TestRuneScannerUnread(t *testing.T) {
 
 	TestLoop: for testNumber, test := range tests {
 
-		runeScanner := RuneScannerWrap(test.Reader)
+		runeScanner := WrapRuneScanner(test.Reader)
 
 		var readCount int
 		for instructionNumber, instruction := range test.Instructions {

runewriter.go

@@ -4,23 +4,25 @@ import (
 	"io"
 )
 
+type runeWriter interface {
+	WriteRune(rune) (int, error)
+}
+
+var _ runeWriter = WrapRuneWriter(nil)
+
 // RuneWriter writes a single UTF-8 encoded Unicode characters.
 type RuneWriter struct {
 	writer io.Writer
 }
 
-// RuneWriterWrap wraps an io.Writer and returns a RuneWriter.
+// WrapRuneWriter wraps an io.Writer and returns a RuneWriter.
-func RuneWriterWrap(writer io.Writer) RuneWriter {
+func WrapRuneWriter(writer io.Writer) RuneWriter {
 	return RuneWriter{
 		writer: writer,
 	}
 }
 
 // WriteRune writes a single UTF-8 encoded Unicode character and returns the number of bytes written.
-func (receiver *RuneWriter) WriteRune(r rune) (int, error) {
+func (receiver RuneWriter) WriteRune(r rune) (int, error) {
-	if nil == receiver {
-		return 0, errNilReceiver
-	}
-
 	return WriteRune(receiver.writer, r)
 }

runewriter_test.go

@@ -58,7 +58,7 @@ func TestRuneWriter(t *testing.T) {
 		var buffer strings.Builder
 		var total int
 
-		runeWriter := utf8.RuneWriterWrap(&buffer)
+		runeWriter := utf8.WrapRuneWriter(&buffer)
 
 		for runeNumber, r := range test.Runes {