/// <summary>
/// Simplify nested 'try { try {} catch {} } finally {}'.
/// This transformation must run after the using/lock tranformations.
/// </summary>
TryCatchStatement TransformTryCatchFinally(TryCatchStatement tryFinally)
{
if (tryCatchFinallyPattern.IsMatch(tryFinally))
{
TryCatchStatement tryCatch = (TryCatchStatement)tryFinally.TryBlock.Statements.Single();
tryFinally.TryBlock = tryCatch.TryBlock.Detach();
tryCatch.CatchClauses.MoveTo(tryFinally.CatchClauses);
}
// Since the tryFinally instance is not changed, we can continue in the visitor as usual, so return null
return(null);
}
public void TestEmptyFinallyDoesNotMatchNullFinally()
{
TryCatchStatement c1 = new TryCatchStatement {
TryBlock = new BlockStatement(),
CatchClauses = { new CatchClause { Body = new BlockStatement() } }
};
TryCatchStatement c2 = new TryCatchStatement {
TryBlock = new BlockStatement(),
CatchClauses = { new CatchClause { Body = new BlockStatement() } },
FinallyBlock = new BlockStatement()
};
Assert.IsFalse(c1.IsMatch(c2));
Assert.IsFalse(c2.IsMatch(c1)); // and vice versa
}
public void TestEmptyFinallyDoesNotMatchNullFinally()
{
TryCatchStatement c1 = new TryCatchStatement {
TryBlock = new BlockStatement(),
CatchClauses = { new CatchClause {
Body = new BlockStatement()
} }
};
TryCatchStatement c2 = new TryCatchStatement {
TryBlock = new BlockStatement(),
CatchClauses = { new CatchClause {
Body = new BlockStatement()
} },
FinallyBlock = new BlockStatement()
};
Assert.IsFalse(c1.IsMatch(c2));
Assert.IsFalse(c2.IsMatch(c1)); // and vice versa
}