internal SyntaxNode Negate(
SyntaxNode expression,
SyntaxGenerator generator,
ISyntaxFactsService syntaxFacts,
SemanticModel semanticModel,
CancellationToken cancellationToken)
{
if (syntaxFacts.IsParenthesizedExpression(expression))
{
return(syntaxFacts.Parenthesize(
Negate(
syntaxFacts.GetExpressionOfParenthesizedExpression(expression),
generator,
syntaxFacts,
semanticModel,
cancellationToken))
.WithTriviaFrom(expression));
}
if (syntaxFacts.IsBinaryExpression(expression))
{
return(GetNegationOfBinaryExpression(expression, generator, syntaxFacts, semanticModel, cancellationToken));
}
else if (syntaxFacts.IsLiteralExpression(expression))
{
return(GetNegationOfLiteralExpression(expression, generator, semanticModel));
}
else if (syntaxFacts.IsLogicalNotExpression(expression))
{
return(GetNegationOfLogicalNotExpression(expression, syntaxFacts));
}
return(generator.LogicalNotExpression(expression));
}