private DirectiveTriviaSyntax ParseElifDirective(SyntaxToken hash, SyntaxToken keyword, bool isActive, bool endIsActive)
{
var expr = this.ParseExpression();
var eod = this.ParseEndOfDirective(ignoreErrors: false);
if (_context.HasPreviousIfOrElif())
{
var isTrue = this.EvaluateBool(expr);
var branchTaken = endIsActive && isTrue && !_context.PreviousBranchTaken();
return(SyntaxFactory.ElifDirectiveTrivia(hash, keyword, expr, eod, endIsActive, branchTaken, isTrue));
}
else
{
eod = eod.TokenWithLeadingTrivia(SyntaxList.Concat(SyntaxFactory.DisabledText(expr.ToFullString()), eod.GetLeadingTrivia()));
if (_context.HasUnfinishedRegion())
{
return(this.AddError(SyntaxFactory.BadDirectiveTrivia(hash, keyword, eod, isActive), ErrorCode.ERR_EndRegionDirectiveExpected));
}
else if (_context.HasUnfinishedIf())
{
return(this.AddError(SyntaxFactory.BadDirectiveTrivia(hash, keyword, eod, isActive), ErrorCode.ERR_EndifDirectiveExpected));
}
else
{
return(this.AddError(SyntaxFactory.BadDirectiveTrivia(hash, keyword, eod, isActive), ErrorCode.ERR_UnexpectedDirective));
}
}
}
private SyntaxList <VB.Syntax.StatementSyntax> VisitComplexForStatement(CS.Syntax.ForStatementSyntax node)
{
// VB doesn't have a for loop. So convert:
// for (declarations; condition; incrementors) body into:
//
// declarations
// while (condition) {
// body;
// incrementors;
// }
VB.Syntax.WhileStatementSyntax begin;
if (node.Condition == null)
{
begin = VB.SyntaxFactory.WhileStatement(
condition: VB.SyntaxFactory.TrueLiteralExpression(VB.SyntaxFactory.Token(VB.SyntaxKind.TrueKeyword)));
}
else
{
begin = VB.SyntaxFactory.WhileStatement(
condition: nodeVisitor.VisitExpression(node.Condition));
}
SyntaxList <VB.Syntax.StatementSyntax> initialBlock = Visit(node.Statement);
List <VB.Syntax.StatementSyntax> whileStatements = initialBlock.Concat(
node.Incrementors.Select(nodeVisitor.VisitStatement)).ToList();
SyntaxList <VB.Syntax.StatementSyntax> whileBody = List <VB.Syntax.StatementSyntax>(whileStatements);
VB.Syntax.WhileBlockSyntax whileBlock = VB.SyntaxFactory.WhileBlock(
begin,
whileBody);
List <VB.Syntax.StatementSyntax> statements = new List <VB.Syntax.StatementSyntax>();
if (node.Declaration != null)
{
statements.Add(nodeVisitor.Visit <VB.Syntax.StatementSyntax>(node.Declaration));
}
statements.Add(whileBlock);
return(List <VB.Syntax.StatementSyntax>(statements));
}
public static SyntaxToken AddNodesAsTrailingTrivia(this SyntaxToken token, params SyntaxNode[] nodes)
{
var trivia = nodes.ConvertToTriviaList();
return(token.WithTrailingTrivia(SyntaxList.Concat(token.GetTrailingTrivia(), trivia)));
}