protected virtual async Task <string> HandleNestingRegexMatchAsync(string source, string language, IDictionary <string, object> args,
TranslateAsyncDelegate translateAsync, Match match)
{
var expression = match.Groups[1];
string key;
IDictionary <string, object> childArgs;
if (expression.Value.IndexOf(FormatSeparator, StringComparison.Ordinal) < 0)
{
key = expression.Value;
childArgs = args;
}
else
{
var keyParts = expression.Value.Split(FormatSeparator, 2);
key = keyParts[0];
var childArgsString = keyParts[1].Trim();
childArgs = await ParseNestedArgsAsync(childArgsString, language, args);
}
var value = await translateAsync(language, key, childArgs);
if (value == null)
{
return(source);
}
if (value.Contains(match.Value))
{
return(source);
}
return(source.ReplaceFirst(match.Value, value));
}
public virtual async Task <string> NestAsync(string source, string language, IDictionary <string, object> args,
TranslateAsyncDelegate translateAsync)
{
var matches = NestingRegex.Matches(source);
var result = source;
for (var i = 0; i < matches.Count; i++)
{
var match = matches[i];
result = await HandleNestingRegexMatchAsync(result, language, args, translateAsync, match);
}
return(result);
}
public Task <string> NestAsync(string source, string language, IDictionary <string, object> args, TranslateAsyncDelegate translateAsync)
{
throw new NotSupportedException("Nesting is not supported by the Polyglot.js format interpolator.");
}
