public static void AnalyzeIfStatement(SyntaxNodeAnalysisContext context)
{
var ifStatement = (IfStatementSyntax)context.Node;
if (ifStatement.IsSimpleIf())
{
NotEqualsToNullExpression notEqualsToNull;
if (NotEqualsToNullExpression.TryCreate(ifStatement.Condition, out notEqualsToNull))
{
MemberInvocationExpression memberInvocation;
if (MemberInvocationExpression.TryCreate(ifStatement.GetSingleStatementOrDefault(), out memberInvocation) &&
notEqualsToNull.Left.IsEquivalentTo(memberInvocation.Expression, topLevel: false) &&
!ifStatement.SpanContainsDirectives())
{
context.ReportDiagnostic(DiagnosticDescriptors.UseConditionalAccess, ifStatement);
}
}
}
}
public static void AnalyzeIfStatement(SyntaxNodeAnalysisContext context, INamedTypeSymbol expressionType)
{
var ifStatement = (IfStatementSyntax)context.Node;
if (ifStatement.IsSimpleIf() &&
!ifStatement.ContainsDiagnostics)
{
NotEqualsToNullExpression notEqualsToNull;
if (NotEqualsToNullExpression.TryCreate(ifStatement.Condition, out notEqualsToNull))
{
MemberInvocationStatement memberInvocation;
if (MemberInvocationStatement.TryCreate(ifStatement.GetSingleStatementOrDefault(), out memberInvocation) &&
SyntaxComparer.AreEquivalent(notEqualsToNull.Left, memberInvocation.Expression) &&
!ifStatement.IsInExpressionTree(expressionType, context.SemanticModel, context.CancellationToken) &&
!ifStatement.SpanContainsDirectives())
{
context.ReportDiagnostic(DiagnosticDescriptors.UseConditionalAccess, ifStatement);
}
}
}
}