// Begin the output of an exception block within the current method.
public virtual Label BeginExceptionBlock()
{
ExceptionTry tryBlock = new ExceptionTry();
tryBlock.next = exceptionStack;
tryBlock.beginTry = offset;
tryBlock.endTry = -1;
tryBlock.endCatch = -1;
tryBlock.clauses = null;
tryBlock.endLabel = DefineLabel();
exceptionStack = tryBlock;
return tryBlock.endLabel;
}
// End the output of an exception block.
public virtual void EndExceptionBlock()
{
// Make sure that the request is legal.
ExceptionTry tryBlock = exceptionStack;
if(tryBlock == null)
{
throw new NotSupportedException
(_("Emit_NeedExceptionBlock"));
}
if(tryBlock.clauses == null)
{
throw new InvalidOperationException
(_("Emit_NoExceptionClauses"));
}
// Terminate the last clause in the list.
TerminateClause();
// Mark the label for the end of the exception block.
MarkLabel(tryBlock.endLabel);
// Add the exception to the end of the real block list.
exceptionStack = tryBlock.next;
tryBlock.next = null;
if(exceptionListEnd != null)
{
exceptionListEnd.next = tryBlock;
}
else
{
exceptionList = tryBlock;
}
exceptionListEnd = tryBlock;
}
}; // class ExceptionClause
// Constructor.
internal ILGenerator(ModuleBuilder module, int size)
{
this.module = module;
if(size < 16)
{
size = 16;
}
code = new byte [size];
offset = 0;
height = 0;
maxHeight = 0;
labels = null;
numLabels = 0;
locals = null;
exceptionStack = null;
exceptionList = null;
exceptionListEnd = null;
tokenFixups = null;
module.assembly.AddDetach(this);
}
