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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Buffers;
using System.Buffers.Text;
using System.Diagnostics;
namespace System.Text.Json
{
public sealed partial class Utf8JsonWriter
{
/// <summary>
/// Writes the <see cref="Guid"/> value (as a JSON string) as an element of a JSON array.
/// </summary>
/// <param name="value">The value to write.</param>
/// <exception cref="InvalidOperationException">
/// Thrown if this would result in invalid JSON being written (while validation is enabled).
/// </exception>
/// <remarks>
/// Writes the <see cref="Guid"/> using the default <see cref="StandardFormat"/> (that is, 'D'), as the form: nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnnn.
/// </remarks>
public void WriteStringValue(Guid value)
{
if (!_options.SkipValidation)
{
ValidateWritingValue();
}
if (_options.Indented)
{
WriteStringValueIndented(value);
}
else
{
WriteStringValueMinimized(value);
}
SetFlagToAddListSeparatorBeforeNextItem();
_tokenType = JsonTokenType.String;
}
private void WriteStringValueMinimized(Guid value)
{
int maxRequired = JsonConstants.MaximumFormatGuidLength + 3; // 2 quotes, and optionally, 1 list separator
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span<byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
output[BytesPending++] = JsonConstants.Quote;
bool result = Utf8Formatter.TryFormat(value, output.Slice(BytesPending), out int bytesWritten);
Debug.Assert(result);
BytesPending += bytesWritten;
output[BytesPending++] = JsonConstants.Quote;
}
private void WriteStringValueIndented(Guid value)
{
int indent = Indentation;
Debug.Assert(indent <= _indentLength * _options.MaxDepth);
// 2 quotes, and optionally, 1 list separator and 1-2 bytes for new line
int maxRequired = indent + JsonConstants.MaximumFormatGuidLength + 3 + _newLineLength;
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span<byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
if (_tokenType != JsonTokenType.PropertyName)
{
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(output);
}
WriteIndentation(output.Slice(BytesPending), indent);
BytesPending += indent;
}
output[BytesPending++] = JsonConstants.Quote;
bool result = Utf8Formatter.TryFormat(value, output.Slice(BytesPending), out int bytesWritten);
Debug.Assert(result);
BytesPending += bytesWritten;
output[BytesPending++] = JsonConstants.Quote;
}
}
}
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