private void VerifyTriggerCharactersWorker(char[] expectedTriggerCharacters, char[] unexpectedTriggerCharacters, SourceCodeKind sourceCodeKind)
{
ISignatureHelpProvider signatureHelpProvider = CreateSignatureHelpProvider();
foreach (var expectedTriggerCharacter in expectedTriggerCharacters)
{
Assert.True(signatureHelpProvider.IsTriggerCharacter(expectedTriggerCharacter), "Expected '" + expectedTriggerCharacter + "' to be a trigger character");
}
foreach (var unexpectedTriggerCharacter in unexpectedTriggerCharacters)
{
Assert.False(signatureHelpProvider.IsTriggerCharacter(unexpectedTriggerCharacter), "Expected '" + unexpectedTriggerCharacter + "' to NOT be a trigger character");
}
}
public static async Task <bool> IsTriggerCharacter([NotNull] this ISignatureHelpProvider provider, Document document, int position)
{
if (provider == null)
{
throw new ArgumentNullException(nameof(provider));
}
var text = await document.GetTextAsync().ConfigureAwait(false);
var character = text.GetSubText(new TextSpan(position, 1))[0];
return(provider.IsTriggerCharacter(character));
}