protected internal void Accept(SyntaxToken token)
{
if (token != null)
{
foreach (var error in token.GetDiagnostics())
{
Context.ErrorSink.OnError(error);
}
TokenBuilder.Add(token);
}
}
protected internal void Accept(IEnumerable <SyntaxToken> tokens)
{
foreach (var token in tokens)
{
foreach (var error in token.GetDiagnostics())
{
Context.ErrorSink.OnError(error);
}
TokenBuilder.Add(token);
}
}
protected internal void Accept(SyntaxToken token)
{
if (token != null)
{
if (token.Kind == SyntaxKind.NewLine)
{
Context.StartOfLine = true;
}
else if (token.Kind != SyntaxKind.Whitespace)
{
Context.StartOfLine = false;
}
foreach (var error in token.GetDiagnostics())
{
Context.ErrorSink.OnError(error);
}
TokenBuilder.Add(token);
}
}
// TODO(krait): Can't it render messages directly to TextWriter? But let's not change it yet..
/// <summary>
/// <para>Renders the template to a fully formed log message, replacing placeholders with values from <paramref name="properties"/>.</para>
/// <para>See <see cref="LogEvent.MessageTemplate"/> for details on <paramref name="template"/> format.</para>
/// <para>This method never throws exceptions.</para>
/// </summary>
/// <param name="template">A message template with zero or more placeholders to substitute.</param>
/// <param name="properties">A dictionary of properties to be used for substitution.</param>
public static string FormatMessage([CanBeNull] string template, [CanBeNull] IReadOnlyDictionary <string, object> properties)
{
if (template == null)
{
return(null);
}
if (properties == null)
{
return(template);
}
var resultBuilder = StringBuilderCache.Acquire(template.Length * 2);
var tokenBuilderChars = CharArrayCache.Acquire(template.Length);
var tokenBuilder = new TokenBuilder(tokenBuilderChars);
for (var i = 0; i < template.Length; i++)
{
var currentChar = template[i];
if (currentChar != '{' && currentChar != '}')
{
tokenBuilder.Add(currentChar);
continue;
}
if (!tokenBuilder.IsEmpty)
{
tokenBuilder.MoveToResult(resultBuilder);
}
if (i == template.Length - 1)
{
tokenBuilder.Add(currentChar);
continue;
}
var nextChar = template[i + 1];
if (currentChar == nextChar)
{
tokenBuilder.Add(currentChar);
i++;
continue;
}
if (currentChar == '}')
{
tokenBuilder.Add(currentChar);
continue;
}
var findTokenResult = tokenBuilder.TryFindToken(template, i);
i += tokenBuilder.Length - 1;
if (findTokenResult)
{
var key = tokenBuilder.GetKeyFromBuffer();
if (properties.TryGetValue(key, out var value))
{
resultBuilder.Append(FormatPropertyValue(value));
tokenBuilder.Clear();
}
}
}
if (!tokenBuilder.IsEmpty)
{
tokenBuilder.MoveToResult(resultBuilder);
}
CharArrayCache.Return(tokenBuilderChars);
return(StringBuilderCache.GetStringAndRelease(resultBuilder));
}