private SyntaxFirstTokenReplacer(InternalSyntaxToken oldToken, InternalSyntaxToken newToken, int diagnosticOffsetDelta)
{
_oldToken = oldToken;
_newToken = newToken;
_diagnosticOffsetDelta = diagnosticOffsetDelta;
_foundOldToken = false;
}
internal static TRoot Replace <TRoot>(TRoot root, InternalSyntaxToken oldToken, InternalSyntaxToken newToken, int diagnosticOffsetDelta)
where TRoot : InternalSyntaxNode
{
var replacer = new SyntaxFirstTokenReplacer(oldToken, newToken, diagnosticOffsetDelta);
var newRoot = (TRoot)replacer.Visit(root);
Debug.Assert(replacer._foundOldToken);
return(newRoot);
}
internal static TRoot Replace <TRoot>(TRoot root, InternalSyntaxToken newToken)
where TRoot : InternalSyntaxNode
{
var oldToken = root.GetLastToken();
var replacer = new SyntaxLastTokenReplacer(oldToken, newToken);
var newRoot = (TRoot)replacer.Visit(root);
Debug.Assert(replacer._found);
return(newRoot);
}
private void PushToken(Syntax.InternalSyntax.InternalSyntaxToken token)
{
var trailing = token.GetTrailingTrivia();
if (trailing != null)
{
this.Push(trailing);
}
this.Push(token);
var leading = token.GetLeadingTrivia();
if (leading != null)
{
this.Push(leading);
}
}
public override InternalSyntaxNode VisitToken(InternalSyntaxToken token)
{
var leading = this.VisitList(token.LeadingTrivia);
var trailing = this.VisitList(token.TrailingTrivia);
if (leading != token.LeadingTrivia || trailing != token.TrailingTrivia)
{
if (leading != token.LeadingTrivia)
{
token = token.TokenWithLeadingTrivia(leading.Node);
}
if (trailing != token.TrailingTrivia)
{
token = token.TokenWithTrailingTrivia(trailing.Node);
}
}
return(token);
}
private SyntaxLastTokenReplacer(InternalSyntaxToken oldToken, InternalSyntaxToken newToken)
{
_oldToken = oldToken;
_newToken = newToken;
}
public Internal.SeparatedSyntaxList <TNode> SeparatedList <TNode>(TNode node1, InternalSyntaxToken token, TNode node2) where TNode : InternalSyntaxNode
{
return(new Internal.SeparatedSyntaxList <TNode>(new Internal.SyntaxList <InternalSyntaxNode>(Internal.SyntaxList.List(node1, token, node2))));
}
public Internal.SeparatedSyntaxList <TNode> SeparatedList <TNode>(InternalSyntaxToken token) where TNode : InternalSyntaxNode
{
return(new Internal.SeparatedSyntaxList <TNode>(new Internal.SyntaxList <InternalSyntaxNode>(token)));
}