public JNode VisitUsingStatement(UsingStatement node)
{
var st3 = Visit(node.ResourceAcquisition);
JVariableDeclarationStatement stVar;
if (st3 is JExpression)
{
stVar = J.Var("$r" + VariableResourceCounter++, node.Resolve().Type.JAccess(), (JExpression)st3).Statement();
}
else
{
stVar = (JVariableDeclarationStatement)st3;
}
var trySt = VisitStatement(node.EmbeddedStatement);
var st2 = new JTryStatement {
TryBlock = trySt.ToBlock(), FinallyBlock = J.Block()
};
//var resource = node.ResourceAcquisition;
//var decl = resource as VariableDeclarationStatement;
//if (decl == null || decl.Variables.Count == 0)
// throw new Exception("using statement is supported only with the var keyword in javascript. Example: using(var g = new MyDisposable()){}");
foreach (var dr in stVar.Declaration.Declarators)
{
st2.FinallyBlock.Add(J.Member(dr.Name).Member("Dispose").Invoke().Statement());
}
return(J.Block().Add(stVar).Add(st2)); //TODO: get rid of block
}
public JNode VisitTryCatchStatement(TryCatchStatement node)
{
var node2 = new JTryStatement {
TryBlock = (JBlock)Visit(node.TryBlock)
};
if (node.CatchClauses != null && node.CatchClauses.Count > 0)
{
if (node.CatchClauses.Count > 1)
{
throw new CompilerException(node, "Client code may not have more than one catch clause, due to JavaScript limitation");
}
node2.CatchClause = (JCatchClause)Visit(node.CatchClauses.First());
}
if (node.FinallyBlock != null)
{
node2.FinallyBlock = (JBlock)Visit(node.FinallyBlock);
}
return(node2);
}
public void VisitTryStatement(JTryStatement node)
{
Write("try");
if (OpenBraceInNewLine)
{
WriteLine();
}
Visit(node.TryBlock);
if (node.CatchClause != null)
{
Visit(node.CatchClause);
}
if (node.FinallyBlock != null)
{
Write("finally");
if (OpenBraceInNewLine)
{
WriteLine();
}
Visit(node.FinallyBlock);
}
}
