Fixed SD2-1166: C# parser: Initializer in event declaration causes parser error

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@1899 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/NRefactory/NRefactoryASTGenerator/AST/Expressions.cs

@@ -156,6 +156,7 @@ namespace NRefactoryASTGenerator.Ast
 	class AnonymousMethodExpression : Expression {
 		List<ParameterDeclarationExpression> parameters;
 		BlockStatement body;
+		bool hasParameterList;
 	}
 	
 	class CheckedExpression : Expression {

src/Libraries/NRefactory/NRefactoryASTGenerator/AST/TypeLevel.cs

@@ -91,13 +91,14 @@ namespace NRefactoryASTGenerator.Ast
 	[IncludeBoolProperty("HasRaiseRegion",  "return !raiseRegion.IsNull;")]
 	class EventDeclaration : ParametrizedNode
 	{
-		TypeReference   typeReference;
+		TypeReference typeReference;
 		List<InterfaceImplementation> interfaceImplementations;
 		EventAddRegion addRegion;
 		EventRemoveRegion removeRegion;
 		EventRaiseRegion raiseRegion;
 		Location bodyStart;
 		Location bodyEnd;
+		Expression initializer;
 		
 		public EventDeclaration(TypeReference typeReference, string name, Modifiers modifier, List<AttributeSection> attributes, List<ParameterDeclarationExpression> parameters)
 			: base(modifier, attributes, name, parameters)

src/Libraries/NRefactory/Project/Src/Ast/Generated.cs

@@ -87,6 +87,8 @@ namespace ICSharpCode.NRefactory.Ast {
 		
 		BlockStatement body;
 		
+		bool hasParameterList;
+		
 		public List<ParameterDeclarationExpression> Parameters {
 			get {
 				return parameters;
@@ -106,6 +108,15 @@ namespace ICSharpCode.NRefactory.Ast {
 			}
 		}
 		
+		public bool HasParameterList {
+			get {
+				return hasParameterList;
+			}
+			set {
+				hasParameterList = value;
+			}
+		}
+		
 		public AnonymousMethodExpression() {
 			parameters = new List<ParameterDeclarationExpression>();
 			body = BlockStatement.Null;
@@ -116,7 +127,7 @@ namespace ICSharpCode.NRefactory.Ast {
 		}
 		
 		public override string ToString() {
-			return string.Format("[AnonymousMethodExpression Parameters={0} Body={1}]", GetCollectionString(Parameters), Body);
+			return string.Format("[AnonymousMethodExpression Parameters={0} Body={1} HasParameterList={2}]", GetCollectionString(Parameters), Body, HasParameterList);
 		}
 	}
 	
@@ -1488,6 +1499,8 @@ namespace ICSharpCode.NRefactory.Ast {
 		
 		Location bodyEnd;
 		
+		Expression initializer;
+		
 		public TypeReference TypeReference {
 			get {
 				return typeReference;
@@ -1551,6 +1564,16 @@ namespace ICSharpCode.NRefactory.Ast {
 			}
 		}
 		
+		public Expression Initializer {
+			get {
+				return initializer;
+			}
+			set {
+				initializer = value ?? Expression.Null;
+				if (!initializer.IsNull) initializer.Parent = this;
+			}
+		}
+		
 		public EventDeclaration(TypeReference typeReference, string name, Modifiers modifier, List<AttributeSection> attributes, List<ParameterDeclarationExpression> parameters) : 
 				base(modifier, attributes, name, parameters) {
 			TypeReference = typeReference;
@@ -1560,6 +1583,7 @@ namespace ICSharpCode.NRefactory.Ast {
 			raiseRegion = EventRaiseRegion.Null;
 			bodyStart = Location.Empty;
 			bodyEnd = Location.Empty;
+			initializer = Expression.Null;
 		}
 		
 		public EventDeclaration(TypeReference typeReference, Modifiers modifier, List<ParameterDeclarationExpression> parameters, List<AttributeSection> attributes, string name, List<InterfaceImplementation> interfaceImplementations) : 
@@ -1571,6 +1595,7 @@ namespace ICSharpCode.NRefactory.Ast {
 			raiseRegion = EventRaiseRegion.Null;
 			bodyStart = Location.Empty;
 			bodyEnd = Location.Empty;
+			initializer = Expression.Null;
 		}
 		
 		public bool HasAddRegion {
@@ -1597,8 +1622,8 @@ namespace ICSharpCode.NRefactory.Ast {
 		
 		public override string ToString() {
 			return string.Format("[EventDeclaration TypeReference={0} InterfaceImplementations={1} AddRegion={2} Re" +
-					"moveRegion={3} RaiseRegion={4} BodyStart={5} BodyEnd={6} Name={7} Parameters={8}" +
-					" Attributes={9} Modifier={10}]", TypeReference, GetCollectionString(InterfaceImplementations), AddRegion, RemoveRegion, RaiseRegion, BodyStart, BodyEnd, Name, GetCollectionString(Parameters), GetCollectionString(Attributes), Modifier);
+					"moveRegion={3} RaiseRegion={4} BodyStart={5} BodyEnd={6} Initializer={7} Name={8" +
+					"} Parameters={9} Attributes={10} Modifier={11}]", TypeReference, GetCollectionString(InterfaceImplementations), AddRegion, RemoveRegion, RaiseRegion, BodyStart, BodyEnd, Initializer, Name, GetCollectionString(Parameters), GetCollectionString(Attributes), Modifier);
 		}
 	}
 	

src/Libraries/NRefactory/Project/Src/IAstVisitor.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:2.0.50727.88
+//     Runtime Version:2.0.50727.42
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.

src/Libraries/NRefactory/Project/Src/Parser/CSharp/cs.ATG

@@ -775,6 +775,7 @@ StructMemberDecl<ModifierList m, List<AttributeSection> attributes>
 		|	ident (. qualident = t.val; .)
 		)
 		(. eventDecl.Name = qualident; eventDecl.EndLocation = t.EndLocation; .)
+		[   "=" Expr<out expr> (. eventDecl.Initializer = expr; .) ]
 		[	"{" (. eventDecl.BodyStart = t.Location; .)
 			EventAccessorDecls<out addBlock, out removeBlock> 
 			"}" (. eventDecl.BodyEnd   = t.EndLocation; .)
@@ -1809,6 +1810,7 @@ AnonymousMethodExpr<out Expression outExpr>
 		"("
 		[ FormalParameterList<p> (. expr.Parameters = p; .) ]
 		")"
+		(. expr.HasParameterList = true; .)
 	]
 	/*--- ParseExpression doesn't set a compilation unit, */
 	/*--- so we can't use block then -> skip body of anonymous method */

src/Libraries/NRefactory/Project/Src/PrettyPrinter/CSharp/CSharpOutputVisitor.cs

@@ -559,7 +559,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			outputFormatter.Indent();
 			OutputModifier(propertyGetRegion.Modifier);
 			outputFormatter.PrintText("get");
-			OutputBlock(propertyGetRegion.Block, prettyPrintOptions.PropertyGetBraceStyle);
+			OutputBlockAllowInline(propertyGetRegion.Block, prettyPrintOptions.PropertyGetBraceStyle);
 			return null;
 		}
 		
@@ -569,7 +569,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			outputFormatter.Indent();
 			OutputModifier(propertySetRegion.Modifier);
 			outputFormatter.PrintText("set");
-			OutputBlock(propertySetRegion.Block, prettyPrintOptions.PropertySetBraceStyle);
+			OutputBlockAllowInline(propertySetRegion.Block, prettyPrintOptions.PropertySetBraceStyle);
 			return null;
 		}
 		
@@ -589,6 +589,14 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			}
 			
 			outputFormatter.PrintIdentifier(eventDeclaration.Name);
+			
+			if (!eventDeclaration.Initializer.IsNull) {
+				outputFormatter.Space();
+				outputFormatter.PrintToken(Tokens.Assign);
+				outputFormatter.Space();
+				nodeTracker.TrackedVisit(eventDeclaration.Initializer, data);
+			}
+			
 			if (eventDeclaration.AddRegion.IsNull && eventDeclaration.RemoveRegion.IsNull) {
 				outputFormatter.PrintToken(Tokens.Semicolon);
 				outputFormatter.NewLine();
@@ -606,7 +614,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			VisitAttributes(eventAddRegion.Attributes, data);
 			outputFormatter.Indent();
 			outputFormatter.PrintText("add");
-			OutputBlock(eventAddRegion.Block, prettyPrintOptions.EventAddBraceStyle);
+			OutputBlockAllowInline(eventAddRegion.Block, prettyPrintOptions.EventAddBraceStyle);
 			return null;
 		}
 		
@@ -615,7 +623,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			VisitAttributes(eventRemoveRegion.Attributes, data);
 			outputFormatter.Indent();
 			outputFormatter.PrintText("remove");
-			OutputBlock(eventRemoveRegion.Block, prettyPrintOptions.EventRemoveBraceStyle);
+			OutputBlockAllowInline(eventRemoveRegion.Block, prettyPrintOptions.EventRemoveBraceStyle);
 			return null;
 		}
 		
@@ -906,6 +914,46 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			nodeTracker.EndNode(blockStatement);
 		}
 		
+		void OutputBlockAllowInline(BlockStatement blockStatement, BraceStyle braceStyle)
+		{
+			OutputBlockAllowInline(blockStatement, braceStyle, true);
+		}
+		
+		void OutputBlockAllowInline(BlockStatement blockStatement, BraceStyle braceStyle, bool useNewLine)
+		{
+			if (!blockStatement.IsNull
+			    && (
+			    	blockStatement.Children.Count == 0
+			    	|| blockStatement.Children.Count == 1
+			    	&& (blockStatement.Children[0] is ExpressionStatement
+			    	    || blockStatement.Children[0] is ReturnStatement
+			    	   )))
+			{
+				outputFormatter.Space();
+				outputFormatter.PrintToken(Tokens.OpenCurlyBrace);
+				outputFormatter.Space();
+				if (blockStatement.Children.Count != 0) {
+					bool doIndent  = outputFormatter.DoIndent;
+					bool doNewLine = outputFormatter.DoNewLine;
+					outputFormatter.DoIndent  = false;
+					outputFormatter.DoNewLine = false;
+					
+					nodeTracker.TrackedVisit(blockStatement.Children[0], null);
+					
+					outputFormatter.DoIndent  = doIndent;
+					outputFormatter.DoNewLine = doNewLine;
+					
+					outputFormatter.Space();
+				}
+				outputFormatter.PrintToken(Tokens.CloseCurlyBrace);
+				if (useNewLine) {
+					outputFormatter.NewLine();
+				}
+			} else {
+				OutputBlock(blockStatement, braceStyle);
+			}
+		}
+		
 		public object VisitBlockStatement(BlockStatement blockStatement, object data)
 		{
 			if (data is BraceStyle)
@@ -2149,11 +2197,12 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 		{
 			outputFormatter.PrintToken(Tokens.Delegate);
 			
-			outputFormatter.PrintToken(Tokens.OpenParenthesis);
-			AppendCommaSeparatedList(anonymousMethodExpression.Parameters);
-			outputFormatter.PrintToken(Tokens.CloseParenthesis);
-			OutputBlock(anonymousMethodExpression.Body, this.prettyPrintOptions.MethodBraceStyle);
-			
+			if (anonymousMethodExpression.Parameters.Count > 0 || anonymousMethodExpression.HasParameterList) {
+				outputFormatter.PrintToken(Tokens.OpenParenthesis);
+				AppendCommaSeparatedList(anonymousMethodExpression.Parameters);
+				outputFormatter.PrintToken(Tokens.CloseParenthesis);
+			}
+			OutputBlockAllowInline(anonymousMethodExpression.Body, this.prettyPrintOptions.MethodBraceStyle, false);
 			return null;
 		}
 		

src/Libraries/NRefactory/Project/Src/PrettyPrinter/VBNet/VBNetOutputVisitor.cs

@@ -672,6 +672,14 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			nodeTracker.TrackedVisit(eventDeclaration.TypeReference, data);
 			
 			PrintInterfaceImplementations(eventDeclaration.InterfaceImplementations);
+			
+			if (!eventDeclaration.Initializer.IsNull) {
+				outputFormatter.Space();
+				outputFormatter.PrintToken(Tokens.Assign);
+				outputFormatter.Space();
+				nodeTracker.TrackedVisit(eventDeclaration.Initializer, data);
+			}
+			
 			outputFormatter.NewLine();
 			
 			if (customEvent) {

src/Libraries/NRefactory/Project/Src/Visitors/AbstractASTVisitor.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:2.0.50727.88
+//     Runtime Version:2.0.50727.42
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -341,6 +341,7 @@ namespace ICSharpCode.NRefactory.Visitors {
 			Debug.Assert((eventDeclaration.AddRegion != null));
 			Debug.Assert((eventDeclaration.RemoveRegion != null));
 			Debug.Assert((eventDeclaration.RaiseRegion != null));
+			Debug.Assert((eventDeclaration.Initializer != null));
 			foreach (AttributeSection o in eventDeclaration.Attributes) {
 				Debug.Assert(o != null);
 				o.AcceptVisitor(this, data);
@@ -356,7 +357,8 @@ namespace ICSharpCode.NRefactory.Visitors {
 			}
 			eventDeclaration.AddRegion.AcceptVisitor(this, data);
 			eventDeclaration.RemoveRegion.AcceptVisitor(this, data);
-			return eventDeclaration.RaiseRegion.AcceptVisitor(this, data);
+			eventDeclaration.RaiseRegion.AcceptVisitor(this, data);
+			return eventDeclaration.Initializer.AcceptVisitor(this, data);
 		}
 		
 		public virtual object VisitEventRaiseRegion(EventRaiseRegion eventRaiseRegion, object data) {

src/Libraries/NRefactory/Project/Src/Visitors/AbstractAstTransformer.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:2.0.50727.88
+//     Runtime Version:2.0.50727.42
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -600,6 +600,7 @@ namespace ICSharpCode.NRefactory.Visitors {
 			Debug.Assert((eventDeclaration.AddRegion != null));
 			Debug.Assert((eventDeclaration.RemoveRegion != null));
 			Debug.Assert((eventDeclaration.RaiseRegion != null));
+			Debug.Assert((eventDeclaration.Initializer != null));
 			for (int i = 0; i < eventDeclaration.Attributes.Count; i++) {
 				AttributeSection o = eventDeclaration.Attributes[i];
 				Debug.Assert(o != null);
@@ -645,6 +646,9 @@ namespace ICSharpCode.NRefactory.Visitors {
 			nodeStack.Push(eventDeclaration.RaiseRegion);
 			eventDeclaration.RaiseRegion.AcceptVisitor(this, data);
 			eventDeclaration.RaiseRegion = ((EventRaiseRegion)(nodeStack.Pop()));
+			nodeStack.Push(eventDeclaration.Initializer);
+			eventDeclaration.Initializer.AcceptVisitor(this, data);
+			eventDeclaration.Initializer = ((Expression)(nodeStack.Pop()));
 			return null;
 		}
 		

src/Libraries/NRefactory/Test/Output/CSharp/CSharpOutputTest.cs

@@ -69,6 +69,12 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			               "}");
 		}
 		
+		[Test]
+		public void EventWithInitializer()
+		{
+			TestTypeMember("public event EventHandler Click = delegate { };");
+		}
+		
 		[Test]
 		public void Field()
 		{
@@ -326,6 +332,13 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			TestTypeMember("public abstract bool Run();");
 		}
 		
+		[Test]
+		public void AnonymousMethod()
+		{
+			TestStatement("Func b = delegate { return true; };");
+			TestStatement("Func a = delegate() { return false; };");
+		}
+		
 		[Test]
 		public void Interface()
 		{

src/Libraries/NRefactory/Test/Output/CSharp/VBToCSharpConverterTest.cs

@@ -144,7 +144,7 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 		public void Property()
 		{
 			TestMember("ReadOnly Property A()\nGet\nReturn Nothing\nEnd Get\nEnd Property",
-			           "public object A {\n\tget {\n\t\treturn null;\n\t}\n}");
+			           "public object A {\n\tget { return null; }\n}");
 		}
 		
 		[Test]

src/Libraries/NRefactory/Test/Parser/Expressions/AnonymousMethodTests.cs

@@ -27,6 +27,7 @@ namespace ICSharpCode.NRefactory.Tests.Ast
 			AnonymousMethodExpression ame = Parse("delegate {}");
 			Assert.AreEqual(0, ame.Parameters.Count);
 			Assert.AreEqual(0, ame.Body.Children.Count);
+			Assert.IsFalse(ame.HasParameterList);
 		}
 		
 		[Test]
@@ -45,6 +46,7 @@ namespace ICSharpCode.NRefactory.Tests.Ast
 			AnonymousMethodExpression ame = Parse("delegate() {}");
 			Assert.AreEqual(0, ame.Parameters.Count);
 			Assert.AreEqual(0, ame.Body.Children.Count);
+			Assert.IsTrue(ame.HasParameterList);
 		}
 		
 		[Test]