private VB.Syntax.StatementSyntax VisitGotoStatementWorker(CS.Syntax.GotoStatementSyntax node)
{
switch (node.Kind())
{
case CS.SyntaxKind.GotoStatement:
return(VB.SyntaxFactory.GoToStatement(
VB.SyntaxFactory.IdentifierLabel(nodeVisitor.ConvertIdentifier((CS.Syntax.IdentifierNameSyntax)node.Expression))));
case CS.SyntaxKind.GotoDefaultStatement:
return(VB.SyntaxFactory.GoToStatement(
VB.SyntaxFactory.IdentifierLabel(VB.SyntaxFactory.Identifier("Else"))));
case CS.SyntaxKind.GotoCaseStatement:
string text = node.Expression.ToString();
return(VB.SyntaxFactory.GoToStatement(
VB.SyntaxFactory.IdentifierLabel(VB.SyntaxFactory.Identifier(text))));
}
throw new NotImplementedException();
}
public override SyntaxList <StatementSyntax> VisitGotoStatement(CSS.GotoStatementSyntax node)
{
LabelSyntax label;
if (node.IsKind(CS.SyntaxKind.GotoCaseStatement, CS.SyntaxKind.GotoDefaultStatement))
{
if (_blockInfo.Count == 0)
{
throw new InvalidOperationException("goto case/goto default outside switch is illegal!");
}
var labelExpression = node.Expression?.Accept(_nodesVisitor) ?? SyntaxFactory.ElseCaseClause();
_blockInfo.Peek().GotoCaseExpressions.Add(labelExpression);
label = SyntaxFactory.Label(SyntaxKind.IdentifierLabel, MakeGotoSwitchLabel(labelExpression));
}
else
{
label = SyntaxFactory.Label(SyntaxKind.IdentifierLabel, _commonConversions.ConvertIdentifier(((CSS.IdentifierNameSyntax)node.Expression).Identifier));
}
return(SyntaxFactory.SingletonList <StatementSyntax>(SyntaxFactory.GoToStatement(label)));
}
public override SyntaxNode VisitGotoStatement(CSS.GotoStatementSyntax node)
{
if (node.Ancestors().FirstOrDefault(_ => _.IsKind(CS.SyntaxKind.SwitchStatement)) == _csSwitch)
{
bool isGotoCase = node.CaseOrDefaultKeyword.IsKind(CS.SyntaxKind.CaseKeyword);
bool isGotoDefault = node.CaseOrDefaultKeyword.IsKind(CS.SyntaxKind.DefaultKeyword);
// bool isGotoCaseOrDefault = isGotoCase | isGotoDefault;
if (isGotoCase || isGotoDefault)
{
if (!HasGotoTop && !HasGotoDefault)
{
string sNumber = CreateLabelNumber().ToString();
VariantName = "__SELECT_VALUE_" + sNumber;
LabelTop = "__RETRY_SELECT_" + sNumber;
LabelDefault = "__GOTO_DEFALUT_" + sNumber;
}
HasGotoTop |= isGotoCase;
HasGotoDefault |= isGotoDefault;
if (isGotoCase)
{
// "goto case EXPERESSION;" --> " { VariantName = EXPERESSION; Goto LabelTop; }"
var csVariant = CS.SyntaxFactory.IdentifierName(VariantName);
var csAssignExp = CS.SyntaxFactory.AssignmentExpression(CS.SyntaxKind.SimpleAssignmentExpression, csVariant, node.Expression);
var csAssignStatement = CS.SyntaxFactory.ExpressionStatement(csAssignExp);
var csGotoTop = CS.SyntaxFactory.GotoStatement(CS.SyntaxKind.GotoStatement, CS.SyntaxFactory.IdentifierName(LabelTop));
return(CS.SyntaxFactory.Block().AddStatements(csAssignStatement, csGotoTop));
}
else
{
// "goto default;" --> "goto LABEL_DEFAULT;"
return(CS.SyntaxFactory.GotoStatement(CS.SyntaxKind.GotoStatement, CS.SyntaxFactory.IdentifierName(LabelDefault)));
}
}
}
return(base.VisitGotoStatement(node));
}
public override SyntaxList <VB.Syntax.StatementSyntax> VisitGotoStatement(CS.Syntax.GotoStatementSyntax node)
{
return(List(VisitGotoStatementWorker(node)));
}
