FormattedLogValues
struct FormattedLogValues : IReadOnlyList<KeyValuePair<string, object>>, IEnumerable<KeyValuePair<string, object>>, IEnumerable, IReadOnlyCollection<KeyValuePair<string, object>>
using System;
using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Threading;
namespace Microsoft.Extensions.Logging
{
[System.Runtime.CompilerServices.NullableContext(2)]
[System.Runtime.CompilerServices.Nullable(0)]
internal readonly struct FormattedLogValues : IReadOnlyList<KeyValuePair<string, object>>, IEnumerable<KeyValuePair<string, object>>, IEnumerable, IReadOnlyCollection<KeyValuePair<string, object>>
{
internal const int MaxCachedFormatters = 1024;
private const string NullFormat = "[null]";
private static int s_count;
private static readonly ConcurrentDictionary<string, LogValuesFormatter> s_formatters = new ConcurrentDictionary<string, LogValuesFormatter>();
private readonly LogValuesFormatter _formatter;
private readonly object[] _values;
private readonly string _originalMessage;
internal LogValuesFormatter Formatter => _formatter;
[System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})]
public KeyValuePair<string, object> this[int index] {
[return: System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})]
get {
if (index < 0 || index >= Count)
throw new IndexOutOfRangeException("index");
if (index == Count - 1)
return new KeyValuePair<string, object>("{OriginalFormat}", _originalMessage);
return _formatter.GetValue(_values, index);
}
}
public int Count {
get {
if (_formatter == null)
return 1;
return _formatter.ValueNames.Count + 1;
}
}
public FormattedLogValues(string format, params object[] values)
{
if (values != null && values.Length != 0 && format != null) {
if (s_count >= 1024) {
if (!s_formatters.TryGetValue(format, out _formatter))
_formatter = new LogValuesFormatter(format);
} else
_formatter = s_formatters.GetOrAdd(format, delegate(string f) {
Interlocked.Increment(ref s_count);
return new LogValuesFormatter(f);
});
} else
_formatter = null;
_originalMessage = (format ?? "[null]");
_values = values;
}
[return: System.Runtime.CompilerServices.Nullable(new byte[] {
1,
0,
1,
2
})]
public IEnumerator<KeyValuePair<string, object>> GetEnumerator()
{
int num;
for (int i = 0; i < Count; i = num) {
yield return this[i];
num = i + 1;
}
}
[System.Runtime.CompilerServices.NullableContext(1)]
public override string ToString()
{
if (_formatter == null)
return _originalMessage;
return _formatter.Format(_values);
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
}
}