Fix SA1313 null reference exception

Noryoko · Noryoko · commit 1a7ba4b08c4e · 2015-09-25T21:03:58.000-04:00
diff --git a/StyleCop.Analyzers/StyleCop.Analyzers/ReadabilityRules/SA1101PrefixLocalCallsWithThis.cs b/StyleCop.Analyzers/StyleCop.Analyzers/ReadabilityRules/SA1101PrefixLocalCallsWithThis.cs
@@ -196,7 +196,9 @@ private static void HandleIdentifierNameImpl(SyntaxNodeAnalysisContext context,
                 {
                     var parentSymbol = context.SemanticModel.GetSymbolInfo(nameExpression.Parent, context.CancellationToken).Symbol as IFieldSymbol;
 
-                    if (parentSymbol.IsStatic && parentSymbol.ContainingType.Name == symbol.Name)
+                    if (parentSymbol != null
+                        && parentSymbol.IsStatic
+                        && parentSymbol.ContainingType.Name == symbol.Name)
                     {
                         return;
                     }

Original file line number	Diff line number	Diff line change
`@@ -196,7 +196,9 @@ private static void HandleIdentifierNameImpl(SyntaxNodeAnalysisContext context,`
`196`	`196`	`{`
`197`	`197`	`var parentSymbol = context.SemanticModel.GetSymbolInfo(nameExpression.Parent, context.CancellationToken).Symbol as IFieldSymbol;`
`198`	`198`
`199`		`- if (parentSymbol.IsStatic && parentSymbol.ContainingType.Name == symbol.Name)`
	`199`	`+ if (parentSymbol != null`
	`200`	`+ && parentSymbol.IsStatic`
	`201`	`+ && parentSymbol.ContainingType.Name == symbol.Name)`
`200`	`202`	`{`
`201`	`203`	`return;`
`202`	`204`	`}`