Fix #269

libdparse

@@ -1 +1 @@
-Subproject commit a059356c94e949625417ea98c9c1c59186fa285f
+Subproject commit b5791923695c755aae9cf313555fd20c5b0993d9

src/analysis/comma_expression.d

@@ -24,7 +24,7 @@ class CommaExpressionCheck : BaseAnalyzer
 
 	override void visit(const Expression ex)
 	{
-		if (ex.items.length > 1)
+		if (ex.items.length > 1 && interest > 0)
 		{
 			addErrorMessage(ex.line, ex.column, KEY,
 				"Avoid using the comma expression.");
@@ -32,5 +32,19 @@ class CommaExpressionCheck : BaseAnalyzer
 		ex.accept(this);
 	}
 
+	override void visit(const AssignExpression ex)
+	{
+		++interest;
+		ex.accept(this);
+		--interest;
+	}
+
+	invariant
+	{
+		assert(interest >= 0);
+	}
+
+	int interest;
+
 	private enum KEY = "dscanner.suspicious.comma_expression";
 }

src/analysis/ifelsesame.d

@@ -40,7 +40,7 @@ class IfElseSameCheck : BaseAnalyzer
 
 	override void visit(const AssignExpression assignExpression)
 	{
-		const AssignExpression e = cast(const AssignExpression) assignExpression.assignExpression;
+		auto e = cast(const AssignExpression) (cast(const Expression) assignExpression.expression).items[$ - 1];
 		if (e !is null && assignExpression.operator == tok!"="
 			&& e.ternaryExpression == assignExpression.ternaryExpression)
 		{

src/analysis/unmodified.d

@@ -93,7 +93,7 @@ class UnmodifiedFinder:BaseAnalyzer
 			assignExpression.ternaryExpression.accept(this);
 			guaranteeUse--;
 			interest--;
-			assignExpression.assignExpression.accept(this);
+			assignExpression.expression.accept(this);
 		}
 		else
 			assignExpression.accept(this);

src/analysis/unused.d

@@ -154,17 +154,17 @@ class UnusedVariableCheck : BaseAnalyzer
 	override void visit(const AssignExpression assignExp)
 	{
 		assignExp.ternaryExpression.accept(this);
-		if (assignExp.assignExpression !is null)
+		if (assignExp.expression !is null)
 		{
 			interestDepth++;
-			assignExp.assignExpression.accept(this);
+			assignExp.expression.accept(this);
 			interestDepth--;
 		}
 	}
 
 	override void visit(const TemplateDeclaration templateDeclaration)
 	{
-		auto inAgg = inAggregateScope;
+		immutable inAgg = inAggregateScope;
 		inAggregateScope = true;
 		templateDeclaration.accept(this);
 		inAggregateScope = inAgg;

src/astprinter.d

@@ -113,13 +113,13 @@ class XMLPrinter : ASTVisitor
 
     override void visit(const AssignExpression assignExpression)
     {
-        if (assignExpression.assignExpression is null)
+        if (assignExpression.expression is null)
-            output.writeln("<assignExpression>");
+            output.writeln("<expression>");
         else
-            output.writeln("<assignExpression operator=\"",
+            output.writeln("<expression operator=\"",
                 xmlAttributeEscape(str(assignExpression.operator)), "\">");
         assignExpression.accept(this);
-        output.writeln("</assignExpression>");
+        output.writeln("</expression>");
     }
 
     override void visit(const AtAttribute atAttribute)