/// <summary>
/// Determines whether [contains] [the specified expression].
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="subExpression">The sub expression.</param>
/// <param name="skipLambdaSignatures">if set to <see langword="true" /> skip lambda signatures.</param>
/// <returns></returns>
public static bool Contains(Expression expression, Expression subExpression, bool skipLambdaSignatures)
{
if (ReferenceEquals(expression, null) ||
ReferenceEquals(subExpression, null))
{
return(false);
}
FinderExpressionVisitor fev = new FinderExpressionVisitor(subExpression, skipLambdaSignatures);
fev.Visit(expression);
return(fev._found);
}
/// <summary>
/// Determines whether <paramref name="expression" /> uses <paramref name="subExpression">the sub-expression</paramref>.
/// This will search everywhere except inside the signature of a <see cref="LambdaExpression"/>, which is useful for finding the
/// usage of a parameter, without including the parameters of signatures.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="subExpression">The sub expression.</param>
/// <returns><see langword="true"/> if found; otherwise <see langword="false"/>.</returns>
public static bool Uses(this LambdaExpression expression, Expression subExpression)
{
if (ReferenceEquals(expression, subExpression))
{
return(true);
}
if (ReferenceEquals(expression, null) ||
ReferenceEquals(subExpression, null))
{
return(false);
}
return(FinderExpressionVisitor.Contains(expression, subExpression, true));
}