public void Run(RefactoringContext context)
{
var property = context.GetNode <PropertyDeclaration> ();
string backingStoreName = context.GetNameProposal(property.Name);
// create field
var backingStore = new FieldDeclaration();
backingStore.ReturnType = property.ReturnType.Clone();
var initializer = new VariableInitializer(backingStoreName);
backingStore.Variables.Add(initializer);
// create new property & implement the get/set bodies
var newProperty = (PropertyDeclaration)property.Clone();
var id1 = new IdentifierExpression(backingStoreName);
var id2 = new IdentifierExpression(backingStoreName);
newProperty.Getter.Body = new BlockStatement()
{
new ReturnStatement(id1)
};
newProperty.Setter.Body = new BlockStatement()
{
new ExpressionStatement(new AssignmentExpression(id2, AssignmentOperatorType.Assign, new IdentifierExpression("value")))
};
using (var script = context.StartScript()) {
script.Replace(property, newProperty);
script.InsertBefore(property, backingStore);
script.Link(initializer, id1, id2);
}
}
static PropertyDeclaration GeneratePropertyDeclaration(RefactoringContext context, FieldDeclaration field, string fieldName)
{
var mod = ICSharpCode.NRefactory.CSharp.Modifiers.Public;
if (field.HasModifier(ICSharpCode.NRefactory.CSharp.Modifiers.Static))
{
mod |= ICSharpCode.NRefactory.CSharp.Modifiers.Static;
}
return(new PropertyDeclaration()
{
Modifiers = mod,
Name = context.GetNameProposal(fieldName, false),
ReturnType = field.ReturnType.Clone(),
Getter = new Accessor()
{
Body = new BlockStatement()
{
new ReturnStatement(new IdentifierExpression(fieldName))
}
},
Setter = new Accessor()
{
Body = new BlockStatement()
{
new ExpressionStatement(new AssignmentExpression(new IdentifierExpression(fieldName), new IdentifierExpression("value")))
}
}
});
}
public IEnumerable <CodeAction> GetActions(RefactoringContext context)
{
var initializer = context.GetNode <VariableInitializer>();
if (initializer == null || !initializer.NameToken.Contains(context.Location.Line, context.Location.Column))
{
yield break;
}
var type = initializer.Parent.Parent as TypeDeclaration;
if (type == null)
{
yield break;
}
foreach (var member in type.Members)
{
if (member is PropertyDeclaration && ContainsGetter((PropertyDeclaration)member, initializer))
{
yield break;
}
}
var field = initializer.Parent as FieldDeclaration;
if (field == null || field.HasModifier(Modifiers.Readonly) || field.HasModifier(Modifiers.Const))
{
yield break;
}
var resolveResult = context.Resolve(initializer) as MemberResolveResult;
if (resolveResult == null)
{
yield break;
}
yield return(new CodeAction(context.TranslateString("Create property"), script =>
{
var fieldName = context.GetNameProposal(initializer.Name, true);
if (initializer.Name == context.GetNameProposal(initializer.Name, false))
{
script.Rename(resolveResult.Member, fieldName);
}
script.InsertWithCursor(
context.TranslateString("Create property"),
Script.InsertPosition.After, GeneratePropertyDeclaration(context, field, fieldName));
}));
}
public override IEnumerable <CodeAction> GetActions(RefactoringContext context)
{
var property = context.GetNode <PropertyDeclaration>();
if (property == null || !property.NameToken.Contains(context.Location))
{
yield break;
}
if (!(!property.Getter.IsNull && !property.Setter.IsNull && // automatic properties always need getter & setter
property.Getter.Body.IsNull &&
property.Setter.Body.IsNull))
{
yield break;
}
yield return(new CodeAction(context.TranslateString("Create backing store"), script => {
string backingStoreName = context.GetNameProposal(property.Name);
// create field
var backingStore = new FieldDeclaration();
if (property.Modifiers.HasFlag(Modifiers.Static))
{
backingStore.Modifiers |= Modifiers.Static;
}
backingStore.ReturnType = property.ReturnType.Clone();
var initializer = new VariableInitializer(backingStoreName);
backingStore.Variables.Add(initializer);
// create new property & implement the get/set bodies
var newProperty = (PropertyDeclaration)property.Clone();
Expression id1;
if (backingStoreName == "value")
{
id1 = new ThisReferenceExpression().Member("value");
}
else
{
id1 = new IdentifierExpression(backingStoreName);
}
Expression id2 = id1.Clone();
newProperty.Getter.Body = new BlockStatement()
{
new ReturnStatement(id1)
};
newProperty.Setter.Body = new BlockStatement()
{
new AssignmentExpression(id2, AssignmentOperatorType.Assign, new IdentifierExpression("value"))
};
script.Replace(property, newProperty);
script.InsertBefore(property, backingStore);
script.Link(initializer, id1, id2);
}, property.NameToken));
}
protected override CodeAction GetAction(RefactoringContext ctx, IfElseStatement ifElseStatement)
{
var isExpr = ctx.GetNode <IsExpression>();
if (isExpr == null || !isExpr.IsToken.Contains(ctx.Location))
{
return(null);
}
int foundCasts;
var action = ScanIfElse(ctx, ifElseStatement, out isExpr, out foundCasts);
if (action != null)
{
return(action);
}
isExpr = ctx.GetNode <IsExpression>();
var node = isExpr.Parent;
while (node is ParenthesizedExpression)
{
node = node.Parent;
}
var uOp = node as UnaryOperatorExpression;
if (uOp != null && uOp.Operator == UnaryOperatorType.Not)
{
var rr = ctx.Resolve(isExpr.Type);
if (rr == null || rr.IsError || rr.Type.IsReferenceType == false)
{
return(null);
}
return(new CodeAction(ctx.TranslateString("Use 'as' and check for null"), script => {
var varName = ctx.GetNameProposal(CreateMethodDeclarationAction.GuessNameFromType(rr.Type), ifElseStatement.StartLocation);
var varDec = new VariableDeclarationStatement(new PrimitiveType("var"), varName, new AsExpression(isExpr.Expression.Clone(), isExpr.Type.Clone()));
var binaryOperatorIdentifier = new IdentifierExpression(varName);
var binaryOperatorExpression = new BinaryOperatorExpression(binaryOperatorIdentifier, BinaryOperatorType.Equality, new NullReferenceExpression());
if (IsEmbeddedStatement(ifElseStatement))
{
var block = new BlockStatement();
block.Add(varDec);
var newIf = (IfElseStatement)ifElseStatement.Clone();
newIf.Condition = binaryOperatorExpression;
block.Add(newIf);
script.Replace(ifElseStatement, block);
}
else
{
script.InsertBefore(ifElseStatement, varDec);
script.Replace(uOp, binaryOperatorExpression);
}
}, isExpr.IsToken));
}
var obj = isExpr.Expression;
var castToType = isExpr.Type;
var cast = new Choice {
PatternHelper.OptionalParentheses(PatternHelper.OptionalParentheses(obj.Clone()).CastTo(castToType.Clone())),
PatternHelper.OptionalParentheses(PatternHelper.OptionalParentheses(obj.Clone()).CastAs(castToType.Clone()))
};
var rr2 = ctx.Resolve(castToType);
if (rr2 == null || rr2.IsError || rr2.Type.IsReferenceType == false)
{
return(null);
}
var foundCasts2 = isExpr.GetParent <Statement>().DescendantNodesAndSelf(n => !cast.IsMatch(n)).Where(n => isExpr.StartLocation < n.StartLocation && cast.IsMatch(n)).ToList();
return(new CodeAction(ctx.TranslateString("Use 'as' and check for null"), script => {
var varName = ctx.GetNameProposal(CreateMethodDeclarationAction.GuessNameFromType(rr2.Type), ifElseStatement.StartLocation);
var varDec = new VariableDeclarationStatement(new PrimitiveType("var"), varName, new AsExpression(obj.Clone(), castToType.Clone()));
var binaryOperatorIdentifier = new IdentifierExpression(varName);
var binaryOperatorExpression = new BinaryOperatorExpression(binaryOperatorIdentifier, BinaryOperatorType.InEquality, new NullReferenceExpression());
var linkedNodes = new List <AstNode>();
linkedNodes.Add(varDec.Variables.First().NameToken);
linkedNodes.Add(binaryOperatorIdentifier);
if (IsEmbeddedStatement(ifElseStatement))
{
var block = new BlockStatement();
block.Add(varDec);
var newIf = (IfElseStatement)ifElseStatement.Clone();
newIf.Condition = binaryOperatorExpression;
foreach (var node2 in newIf.DescendantNodesAndSelf(n => !cast.IsMatch(n)).Where(n => cast.IsMatch(n)))
{
var id = new IdentifierExpression(varName);
linkedNodes.Add(id);
node2.ReplaceWith(id);
}
block.Add(newIf);
script.Replace(ifElseStatement, block);
}
else
{
script.InsertBefore(ifElseStatement, varDec);
script.Replace(isExpr, binaryOperatorExpression);
foreach (var c in foundCasts2)
{
var id = new IdentifierExpression(varName);
linkedNodes.Add(id);
script.Replace(c, id);
}
}
script.Link(linkedNodes);
}, isExpr.IsToken));
}
public override IEnumerable <CodeAction> GetActions(RefactoringContext context)
{
Expression node = context.GetNode <IdentifierExpression>();
if (node == null)
{
var mr = context.GetNode <MemberReferenceExpression>();
if (mr == null || !mr.MemberNameToken.IsInside(context.Location))
{
yield break;
}
node = mr;
}
if (node == null)
{
yield break;
}
var rr = context.Resolve(node) as MethodGroupResolveResult;
if (rr == null || rr.IsError)
{
yield break;
}
var type = TypeGuessing.GetValidTypes(context.Resolver, node).FirstOrDefault(t => t.Kind == TypeKind.Delegate);
if (type == null)
{
yield break;
}
var invocationMethod = type.GetDelegateInvokeMethod();
if (invocationMethod == null)
{
yield break;
}
yield return(new CodeAction(
context.TranslateString("Convert to anonymous method"),
script => {
var expr = new InvocationExpression(node.Clone(), invocationMethod.Parameters.Select(p => new IdentifierExpression(context.GetNameProposal(p.Name))));
var stmt = invocationMethod.ReturnType.IsKnownType(KnownTypeCode.Void) ? (Statement)expr : new ReturnStatement(expr);
var anonymousMethod = new AnonymousMethodExpression {
Body = new BlockStatement {
stmt
}
};
foreach (var p in invocationMethod.Parameters)
{
var decl = new ParameterDeclaration(context.CreateShortType(p.Type), context.GetNameProposal(p.Name));
anonymousMethod.Parameters.Add(decl);
}
script.Replace(node, anonymousMethod);
},
node
));
}
public override IEnumerable <CodeAction> GetActions(RefactoringContext context)
{
Expression node = context.GetNode <IdentifierExpression>();
if (node == null)
{
var mr = context.GetNode <MemberReferenceExpression>();
if (mr == null || !mr.MemberNameToken.IsInside(context.Location))
{
yield break;
}
node = mr;
}
if (node == null)
{
yield break;
}
var rr = context.Resolve(node) as MethodGroupResolveResult;
if (rr == null || rr.IsError)
{
yield break;
}
var type = TypeGuessing.GetValidTypes(context.Resolver, node).FirstOrDefault(t => t.Kind == TypeKind.Delegate);
if (type == null)
{
yield break;
}
var invocationMethod = type.GetDelegateInvokeMethod();
if (invocationMethod == null)
{
yield break;
}
yield return(new CodeAction(
context.TranslateString("Convert to lambda expression"),
script => {
var invocation = new InvocationExpression(node.Clone(), invocationMethod.Parameters.Select(p => new IdentifierExpression(context.GetNameProposal(p.Name))));
var lambda = new LambdaExpression {
Body = invocation
};
lambda.Parameters.AddRange(
invocation.Arguments
.Cast <IdentifierExpression>()
.Select(p => new ParameterDeclaration {
Name = p.Identifier
})
);
script.Replace(node, lambda);
},
node
));
}
