private BlockSyntax ReplaceNodes(BlockSyntax oldBody)
{
List <SyntaxNode> nodesToTrack = this.markedNodes;
var continueSts = continueStatements.SelectMany(x => x.Value);
var breakSts = breakStatements.SelectMany(x => x.Value);
nodesToTrack.AddRange(continueSts);
nodesToTrack.AddRange(breakSts);
oldBody = oldBody.TrackNodes(nodesToTrack);
foreach (var tuple in this.whileReplacementNodes)
{
var currentA = oldBody.GetCurrentNode(tuple.Item1);
if (currentA != null)
{
//create new statement
var localCondition = tuple.Item3 as LocalDeclarationStatementSyntax;
var initializer = localCondition.Declaration.Variables.First();
var updateCondition = SyntaxFactory.ExpressionStatement(SyntaxFactory.AssignmentExpression(SyntaxKind.SimpleAssignmentExpression,
SyntaxFactory.IdentifierName(initializer.Identifier), initializer.Initializer.Value));
var whileStatement = currentA.Parent;
oldBody = oldBody.InsertNodesBefore(whileStatement, new List <SyntaxNode>()
{
tuple.Item3
});
var currentB = oldBody.GetCurrentNode(tuple.Item1);
oldBody = oldBody.ReplaceNode(currentB, tuple.Item2);
//update continue statements
foreach (var cont in continueStatements[tuple.Item4])
{
var currentContinue = oldBody.GetCurrentNode(cont);
oldBody = oldBody.ReplaceNode(currentContinue, new List <SyntaxNode>()
{
updateCondition, cont
});
}
//update break statements
foreach (var brk in breakStatements[tuple.Item4])
{
var currentBreak = oldBody.GetCurrentNode(brk);
var invalidateCondition = SyntaxFactory.ExpressionStatement(SyntaxFactory.AssignmentExpression(SyntaxKind.SimpleAssignmentExpression,
SyntaxFactory.IdentifierName(initializer.Identifier), SyntaxFactoryExtensions.BooleanLiteralExpression(false)));
oldBody = oldBody.ReplaceNode(currentBreak, new List <SyntaxNode>()
{
invalidateCondition, SyntaxFactory.ContinueStatement()
});
}
var currentWhile = oldBody.GetCurrentNode(tuple.Item4);
//modify body
var whileBody = currentWhile.Statement as BlockSyntax;
var newStatements = whileBody.Statements.Add(updateCondition);
whileBody = whileBody.WithStatements(newStatements);
//updateWhile
var newWhile = currentWhile.WithStatement(whileBody);
oldBody = oldBody.ReplaceNode(currentWhile, newWhile);
}
}
return(oldBody);
}
private StatementSyntax SectionToIf(ExpressionSyntax condition, SwitchSectionSyntax section)
{
SwitchBreakRefactoringVisitor breakRefactoring = new SwitchBreakRefactoringVisitor();
var bodyList = section.Statements.First();
bodyList = (StatementSyntax)breakRefactoring.Visit(bodyList);
bool hasDefault = false;
List <ExpressionSyntax> labelExpressions = new List <ExpressionSyntax>();
foreach (var label in section.Labels)
{
if (label.Keyword.Kind() == SyntaxKind.DefaultKeyword)
{
hasDefault = true;
}
foreach (var child in label.ChildNodes())
{
var labelCondition = (ExpressionSyntax)child;
if ((labelCondition.Kind() != SyntaxKind.NumericLiteralExpression) ||
(labelCondition.Kind() != SyntaxKind.StringLiteralExpression) ||
(labelCondition.Kind() != SyntaxKind.CharacterLiteralExpression) ||
(labelCondition.Kind() != SyntaxKind.SimpleMemberAccessExpression)
)
{
labelCondition = SyntaxFactory.ParenthesizedExpression(labelCondition).WithTriviaFrom(labelCondition);
}
labelExpressions.Add(labelCondition);
break;
}
}
List <ExpressionSyntax> flagConditions = new List <ExpressionSyntax>();
foreach (var expression in labelExpressions)
{
var memberAccess = SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, condition,
SyntaxFactory.IdentifierName("Equals"));
var arg = SyntaxFactory.Argument(expression);
var argList = SyntaxFactory.SeparatedList <ArgumentSyntax>(new List <ArgumentSyntax>()
{
arg
});
var invocation = SyntaxFactory.InvocationExpression(memberAccess, SyntaxFactory.ArgumentList(argList));
flagConditions.Add(invocation);
}
ExpressionSyntax ifCondition = SyntaxFactoryExtensions.BooleanLiteralExpression(true);
if (flagConditions.Count == 1)
{
ifCondition = flagConditions[0];
}
BinaryExpressionSyntax boolCondition = null;
for (int i = 1; i < flagConditions.Count; i++)
{
var right = flagConditions[i];
if (boolCondition == null)
{
boolCondition = SyntaxFactory.BinaryExpression(SyntaxKind.LogicalOrExpression, flagConditions[0], right);
}
else
{
boolCondition = SyntaxFactory.BinaryExpression(SyntaxKind.LogicalOrExpression, boolCondition, right);
}
ifCondition = boolCondition;
}
if (hasDefault)
{
// ifCondition = SyntaxFactory.BinaryExpression(SyntaxKind.LogicalOrExpression, ifCondition, SyntaxFactoryExtensions.BooleanLiteralExpression(true));
return(bodyList);
}
var ifStatement = SyntaxFactory.IfStatement(ifCondition, bodyList);
return(ifStatement);
}