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|
// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
/*============================================================
**
** Class: TextWriter
**
** <OWNER>[....]</OWNER>
**
**
** Purpose: Abstract base class for Text-only Writers.
** Subclasses will include StreamWriter & StringWriter.
**
**
===========================================================*/
using System;
using System.Text;
using System.Threading;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Security.Permissions;
using System.Globalization;
using System.Diagnostics.CodeAnalysis;
using System.Diagnostics.Contracts;
#if FEATURE_ASYNC_IO
using System.Threading.Tasks;
#endif
namespace System.IO {
// This abstract base class represents a writer that can write a sequential
// stream of characters. A subclass must minimally implement the
// Write(char) method.
//
// This class is intended for character output, not bytes.
// There are methods on the Stream class for writing bytes.
[Serializable]
[ComVisible(true)]
#if FEATURE_REMOTING
public abstract class TextWriter : MarshalByRefObject, IDisposable {
#else // FEATURE_REMOTING
public abstract class TextWriter : IDisposable {
#endif // FEATURE_REMOTING
public static readonly TextWriter Null = new NullTextWriter();
#if FEATURE_ASYNC_IO
[NonSerialized]
private static Action<object> _WriteCharDelegate = state =>
{
Tuple<TextWriter, char> tuple = (Tuple<TextWriter, char>)state;
tuple.Item1.Write(tuple.Item2);
};
[NonSerialized]
private static Action<object> _WriteStringDelegate = state =>
{
Tuple<TextWriter, string> tuple = (Tuple<TextWriter, string>)state;
tuple.Item1.Write(tuple.Item2);
};
[NonSerialized]
private static Action<object> _WriteCharArrayRangeDelegate = state =>
{
Tuple<TextWriter, char[], int, int> tuple = (Tuple<TextWriter, char[],int, int>)state;
tuple.Item1.Write(tuple.Item2, tuple.Item3, tuple.Item4);
};
[NonSerialized]
private static Action<object> _WriteLineCharDelegate = state =>
{
Tuple<TextWriter, char> tuple = (Tuple<TextWriter, char>)state;
tuple.Item1.WriteLine(tuple.Item2);
};
[NonSerialized]
private static Action<object> _WriteLineStringDelegate = state =>
{
Tuple<TextWriter, string> tuple = (Tuple<TextWriter, string>)state;
tuple.Item1.WriteLine(tuple.Item2);
};
[NonSerialized]
private static Action<object> _WriteLineCharArrayRangeDelegate = state =>
{
Tuple<TextWriter, char[], int, int> tuple = (Tuple<TextWriter, char[],int, int>)state;
tuple.Item1.WriteLine(tuple.Item2, tuple.Item3, tuple.Item4);
};
[NonSerialized]
private static Action<object> _FlushDelegate = state => ((TextWriter)state).Flush();
#endif
// This should be initialized to Environment.NewLine, but
// to avoid loading Environment unnecessarily so I've duplicated
// the value here.
#if MONO
static string InitialNewLine {
get {
return Environment.NewLine;
}
}
protected char[] CoreNewLine = InitialNewLine.ToCharArray ();
#else
private const String InitialNewLine = "\r\n";
protected char[] CoreNewLine = new char[] { '\r', '\n' };
#endif
// Can be null - if so, ask for the Thread's CurrentCulture every time.
private IFormatProvider InternalFormatProvider;
protected TextWriter()
{
InternalFormatProvider = null; // Ask for CurrentCulture all the time.
}
protected TextWriter(IFormatProvider formatProvider)
{
InternalFormatProvider = formatProvider;
}
public virtual IFormatProvider FormatProvider {
get {
if (InternalFormatProvider == null)
return Thread.CurrentThread.CurrentCulture;
else
return InternalFormatProvider;
}
}
// Closes this TextWriter and releases any system resources associated with the
// TextWriter. Following a call to Close, any operations on the TextWriter
// may raise exceptions. This default method is empty, but descendant
// classes can override the method to provide the appropriate
// functionality.
public virtual void Close() {
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
// Clears all buffers for this TextWriter and causes any buffered data to be
// written to the underlying device. This default method is empty, but
// descendant classes can override the method to provide the appropriate
// functionality.
public virtual void Flush() {
}
public abstract Encoding Encoding {
get;
}
// Returns the line terminator string used by this TextWriter. The default line
// terminator string is a carriage return followed by a line feed ("\r\n").
//
// Sets the line terminator string for this TextWriter. The line terminator
// string is written to the text stream whenever one of the
// WriteLine methods are called. In order for text written by
// the TextWriter to be readable by a TextReader, only one of the following line
// terminator strings should be used: "\r", "\n", or "\r\n".
//
public virtual String NewLine {
get { return new String(CoreNewLine); }
set {
if (value == null)
value = InitialNewLine;
CoreNewLine = value.ToCharArray();
}
}
[HostProtection(Synchronization=true)]
public static TextWriter Synchronized(TextWriter writer) {
if (writer==null)
throw new ArgumentNullException("writer");
Contract.Ensures(Contract.Result<TextWriter>() != null);
Contract.EndContractBlock();
if (writer is SyncTextWriter)
return writer;
return new SyncTextWriter(writer);
}
// Writes a character to the text stream. This default method is empty,
// but descendant classes can override the method to provide the
// appropriate functionality.
//
public virtual void Write(char value) {
}
// Writes a character array to the text stream. This default method calls
// Write(char) for each of the characters in the character array.
// If the character array is null, nothing is written.
//
public virtual void Write(char[] buffer) {
if (buffer != null) Write(buffer, 0, buffer.Length);
}
// Writes a range of a character array to the text stream. This method will
// write count characters of data into this TextWriter from the
// buffer character array starting at position index.
//
public virtual void Write(char[] buffer, int index, int count) {
if (buffer==null)
throw new ArgumentNullException("buffer", Environment.GetResourceString("ArgumentNull_Buffer"));
if (index < 0)
throw new ArgumentOutOfRangeException("index", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
if (count < 0)
throw new ArgumentOutOfRangeException("count", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
if (buffer.Length - index < count)
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidOffLen"));
Contract.EndContractBlock();
for (int i = 0; i < count; i++) Write(buffer[index + i]);
}
// Writes the text representation of a boolean to the text stream. This
// method outputs either Boolean.TrueString or Boolean.FalseString.
//
public virtual void Write(bool value) {
Write(value ? Boolean.TrueLiteral : Boolean.FalseLiteral);
}
// Writes the text representation of an integer to the text stream. The
// text representation of the given value is produced by calling the
// Int32.ToString() method.
//
public virtual void Write(int value) {
Write(value.ToString(FormatProvider));
}
// Writes the text representation of an integer to the text stream. The
// text representation of the given value is produced by calling the
// UInt32.ToString() method.
//
[CLSCompliant(false)]
public virtual void Write(uint value) {
Write(value.ToString(FormatProvider));
}
// Writes the text representation of a long to the text stream. The
// text representation of the given value is produced by calling the
// Int64.ToString() method.
//
public virtual void Write(long value) {
Write(value.ToString(FormatProvider));
}
// Writes the text representation of an unsigned long to the text
// stream. The text representation of the given value is produced
// by calling the UInt64.ToString() method.
//
[CLSCompliant(false)]
public virtual void Write(ulong value) {
Write(value.ToString(FormatProvider));
}
// Writes the text representation of a float to the text stream. The
// text representation of the given value is produced by calling the
// Float.toString(float) method.
//
public virtual void Write(float value) {
Write(value.ToString(FormatProvider));
}
// Writes the text representation of a double to the text stream. The
// text representation of the given value is produced by calling the
// Double.toString(double) method.
//
public virtual void Write(double value) {
Write(value.ToString(FormatProvider));
}
public virtual void Write(Decimal value) {
Write(value.ToString(FormatProvider));
}
// Writes a string to the text stream. If the given string is null, nothing
// is written to the text stream.
//
public virtual void Write(String value) {
if (value != null) Write(value.ToCharArray());
}
// Writes the text representation of an object to the text stream. If the
// given object is null, nothing is written to the text stream.
// Otherwise, the object's ToString method is called to produce the
// string representation, and the resulting string is then written to the
// output stream.
//
public virtual void Write(Object value) {
if (value != null) {
IFormattable f = value as IFormattable;
if (f != null)
Write(f.ToString(null, FormatProvider));
else
Write(value.ToString());
}
}
#if false
// // Converts the wchar * to a string and writes this to the stream.
// //
// __attribute NonCLSCompliantAttribute()
// public void Write(wchar *value) {
// Write(new String(value));
// }
// // Treats the byte* as a LPCSTR, converts it to a string, and writes it to the stream.
// //
// __attribute NonCLSCompliantAttribute()
// public void Write(byte *value) {
// Write(new String(value));
// }
#endif
// Writes out a formatted string. Uses the same semantics as
// String.Format.
//
public virtual void Write(String format, Object arg0)
{
Write(String.Format(FormatProvider, format, arg0));
}
// Writes out a formatted string. Uses the same semantics as
// String.Format.
//
public virtual void Write(String format, Object arg0, Object arg1)
{
Write(String.Format(FormatProvider, format, arg0, arg1));
}
// Writes out a formatted string. Uses the same semantics as
// String.Format.
//
public virtual void Write(String format, Object arg0, Object arg1, Object arg2)
{
Write(String.Format(FormatProvider, format, arg0, arg1, arg2));
}
// Writes out a formatted string. Uses the same semantics as
// String.Format.
//
public virtual void Write(String format, params Object[] arg)
{
Write(String.Format(FormatProvider, format, arg));
}
// Writes a line terminator to the text stream. The default line terminator
// is a carriage return followed by a line feed ("\r\n"), but this value
// can be changed by setting the NewLine property.
//
public virtual void WriteLine() {
Write(CoreNewLine);
}
// Writes a character followed by a line terminator to the text stream.
//
public virtual void WriteLine(char value) {
Write(value);
WriteLine();
}
// Writes an array of characters followed by a line terminator to the text
// stream.
//
public virtual void WriteLine(char[] buffer) {
Write(buffer);
WriteLine();
}
// Writes a range of a character array followed by a line terminator to the
// text stream.
//
public virtual void WriteLine(char[] buffer, int index, int count) {
Write(buffer, index, count);
WriteLine();
}
// Writes the text representation of a boolean followed by a line
// terminator to the text stream.
//
public virtual void WriteLine(bool value) {
Write(value);
WriteLine();
}
// Writes the text representation of an integer followed by a line
// terminator to the text stream.
//
public virtual void WriteLine(int value) {
Write(value);
WriteLine();
}
// Writes the text representation of an unsigned integer followed by
// a line terminator to the text stream.
//
[CLSCompliant(false)]
public virtual void WriteLine(uint value) {
Write(value);
WriteLine();
}
// Writes the text representation of a long followed by a line terminator
// to the text stream.
//
public virtual void WriteLine(long value) {
Write(value);
WriteLine();
}
// Writes the text representation of an unsigned long followed by
// a line terminator to the text stream.
//
[CLSCompliant(false)]
public virtual void WriteLine(ulong value) {
Write(value);
WriteLine();
}
// Writes the text representation of a float followed by a line terminator
// to the text stream.
//
public virtual void WriteLine(float value) {
Write(value);
WriteLine();
}
// Writes the text representation of a double followed by a line terminator
// to the text stream.
//
public virtual void WriteLine(double value) {
Write(value);
WriteLine();
}
public virtual void WriteLine(decimal value) {
Write(value);
WriteLine();
}
// Writes a string followed by a line terminator to the text stream.
//
public virtual void WriteLine(String value) {
if (value==null) {
WriteLine();
}
else {
// We'd ideally like WriteLine to be atomic, in that one call
// to WriteLine equals one call to the OS (ie, so writing to
// console while simultaneously calling printf will guarantee we
// write out a string and new line chars, without any interference).
// Additionally, we need to call ToCharArray on Strings anyways,
// so allocating a char[] here isn't any worse than what we were
// doing anyways. We do reduce the number of calls to the
// backing store this way, potentially.
int vLen = value.Length;
int nlLen = CoreNewLine.Length;
char[] chars = new char[vLen+nlLen];
value.CopyTo(0, chars, 0, vLen);
// CoreNewLine will almost always be 2 chars, and possibly 1.
if (nlLen == 2) {
chars[vLen] = CoreNewLine[0];
chars[vLen+1] = CoreNewLine[1];
}
else if (nlLen == 1)
chars[vLen] = CoreNewLine[0];
else
Buffer.InternalBlockCopy(CoreNewLine, 0, chars, vLen * 2, nlLen * 2);
Write(chars, 0, vLen + nlLen);
}
/*
Write(value); // We could call Write(String) on StreamWriter...
WriteLine();
*/
}
// Writes the text representation of an object followed by a line
// terminator to the text stream.
//
public virtual void WriteLine(Object value) {
if (value==null) {
WriteLine();
}
else {
// Call WriteLine(value.ToString), not Write(Object), WriteLine().
// This makes calls to WriteLine(Object) atomic.
IFormattable f = value as IFormattable;
if (f != null)
WriteLine(f.ToString(null, FormatProvider));
else
WriteLine(value.ToString());
}
}
// Writes out a formatted string and a new line. Uses the same
// semantics as String.Format.
//
public virtual void WriteLine(String format, Object arg0)
{
WriteLine(String.Format(FormatProvider, format, arg0));
}
// Writes out a formatted string and a new line. Uses the same
// semantics as String.Format.
//
public virtual void WriteLine (String format, Object arg0, Object arg1)
{
WriteLine(String.Format(FormatProvider, format, arg0, arg1));
}
// Writes out a formatted string and a new line. Uses the same
// semantics as String.Format.
//
public virtual void WriteLine (String format, Object arg0, Object arg1, Object arg2)
{
WriteLine(String.Format(FormatProvider, format, arg0, arg1, arg2));
}
// Writes out a formatted string and a new line. Uses the same
// semantics as String.Format.
//
public virtual void WriteLine (String format, params Object[] arg)
{
WriteLine(String.Format(FormatProvider, format, arg));
}
#if FEATURE_ASYNC_IO
#region Task based Async APIs
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteAsync(char value)
{
Tuple<TextWriter, char> tuple = new Tuple<TextWriter, char>(this, value);
return Task.Factory.StartNew(_WriteCharDelegate, tuple, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteAsync(String value)
{
Tuple<TextWriter, string> tuple = new Tuple<TextWriter, string>(this, value);
return Task.Factory.StartNew(_WriteStringDelegate, tuple, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public Task WriteAsync(char[] buffer)
{
if (buffer == null) return Task.CompletedTask;
return WriteAsync(buffer, 0, buffer.Length);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteAsync(char[] buffer, int index, int count)
{
Tuple<TextWriter, char[], int, int> tuple = new Tuple<TextWriter, char[], int, int>(this, buffer, index, count);
return Task.Factory.StartNew(_WriteCharArrayRangeDelegate, tuple, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteLineAsync(char value)
{
Tuple<TextWriter, char> tuple = new Tuple<TextWriter, char>(this, value);
return Task.Factory.StartNew(_WriteLineCharDelegate, tuple, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteLineAsync(String value)
{
Tuple<TextWriter, string> tuple = new Tuple<TextWriter, string>(this, value);
return Task.Factory.StartNew(_WriteLineStringDelegate, tuple, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public Task WriteLineAsync(char[] buffer)
{
if (buffer == null) return Task.CompletedTask;
return WriteLineAsync(buffer, 0, buffer.Length);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteLineAsync(char[] buffer, int index, int count)
{
Tuple<TextWriter, char[], int, int> tuple = new Tuple<TextWriter, char[], int, int>(this, buffer, index, count);
return Task.Factory.StartNew(_WriteLineCharArrayRangeDelegate, tuple, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task WriteLineAsync()
{
return WriteAsync(CoreNewLine);
}
[HostProtection(ExternalThreading = true)]
[ComVisible(false)]
public virtual Task FlushAsync()
{
return Task.Factory.StartNew(_FlushDelegate, this, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
}
#endregion
#endif //FEATURE_ASYNC_IO
[Serializable]
private sealed class NullTextWriter : TextWriter
{
internal NullTextWriter(): base(CultureInfo.InvariantCulture) {
}
public override Encoding Encoding {
get { return Encoding.Default; }
}
[SuppressMessage("Microsoft.Contracts", "CC1055")] // Skip extra error checking to avoid *potential* AppCompat problems.
public override void Write(char[] buffer, int index, int count) {
}
public override void Write(String value) {
}
// Not strictly necessary, but for perf reasons
public override void WriteLine() {
}
// Not strictly necessary, but for perf reasons
public override void WriteLine(String value) {
}
public override void WriteLine(Object value) {
}
}
[Serializable]
internal sealed class SyncTextWriter : TextWriter, IDisposable
{
private TextWriter _out;
internal SyncTextWriter(TextWriter t): base(t.FormatProvider) {
_out = t;
}
public override Encoding Encoding {
get { return _out.Encoding; }
}
public override IFormatProvider FormatProvider {
get { return _out.FormatProvider; }
}
public override String NewLine {
[MethodImplAttribute(MethodImplOptions.Synchronized)]
get { return _out.NewLine; }
[MethodImplAttribute(MethodImplOptions.Synchronized)]
set { _out.NewLine = value; }
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Close() {
// So that any overriden Close() gets run
_out.Close();
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
protected override void Dispose(bool disposing) {
// Explicitly pick up a potentially methodimpl'ed Dispose
if (disposing)
((IDisposable)_out).Dispose();
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Flush() {
_out.Flush();
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(char value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(char[] buffer) {
_out.Write(buffer);
}
[SuppressMessage("Microsoft.Contracts", "CC1055")] // Skip extra error checking to avoid *potential* AppCompat problems.
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(char[] buffer, int index, int count) {
_out.Write(buffer, index, count);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(bool value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(int value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(uint value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(long value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(ulong value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(float value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(double value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(Decimal value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(String value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(Object value) {
_out.Write(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(String format, Object arg0) {
_out.Write(format, arg0);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(String format, Object arg0, Object arg1) {
_out.Write(format, arg0, arg1);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(String format, Object arg0, Object arg1, Object arg2) {
_out.Write(format, arg0, arg1, arg2);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void Write(String format, Object[] arg) {
_out.Write(format, arg);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine() {
_out.WriteLine();
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(char value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(decimal value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(char[] buffer) {
_out.WriteLine(buffer);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(char[] buffer, int index, int count) {
_out.WriteLine(buffer, index, count);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(bool value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(int value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(uint value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(long value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(ulong value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(float value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(double value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(String value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(Object value) {
_out.WriteLine(value);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(String format, Object arg0) {
_out.WriteLine(format, arg0);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(String format, Object arg0, Object arg1) {
_out.WriteLine(format, arg0, arg1);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(String format, Object arg0, Object arg1, Object arg2) {
_out.WriteLine(format, arg0, arg1, arg2);
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public override void WriteLine(String format, Object[] arg) {
_out.WriteLine(format, arg);
}
#if FEATURE_ASYNC_IO
//
// On SyncTextWriter all APIs should run synchronously, even the async ones.
//
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task WriteAsync(char value)
{
Write(value);
return Task.CompletedTask;
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task WriteAsync(String value)
{
Write(value);
return Task.CompletedTask;
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task WriteAsync(char[] buffer, int index, int count)
{
Write(buffer, index, count);
return Task.CompletedTask;
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task WriteLineAsync(char value)
{
WriteLine(value);
return Task.CompletedTask;
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task WriteLineAsync(String value)
{
WriteLine(value);
return Task.CompletedTask;
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task WriteLineAsync(char[] buffer, int index, int count)
{
WriteLine(buffer, index, count);
return Task.CompletedTask;
}
[MethodImplAttribute(MethodImplOptions.Synchronized)]
[ComVisible(false)]
public override Task FlushAsync()
{
Flush();
return Task.CompletedTask;
}
#endif //FEATURE_ASYNC_IO
}
}
}
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