private void EmitMethod(
AbstractTypeBuilderList builders, MethodInfo methdoInfo, BuildElement buildElement)
{
SetID(builders);
_context.BuildElement = buildElement;
bool isCatchBlockRequired = false;
bool isFinallyBlockRequired = false;
foreach (IAbstractTypeBuilder builder in builders)
{
isCatchBlockRequired = isCatchBlockRequired || IsApplied(builder, builders, BuildStep.Catch);
isFinallyBlockRequired = isFinallyBlockRequired || IsApplied(builder, builders, BuildStep.Finally);
}
BeginEmitMethod(methdoInfo);
Build(BuildStep.Begin, builders);
EmitHelper emit = _context.MethodBuilder.Emitter;
Label returnLabel = _context.ReturnLabel;
// Begin catch block.
//
if (isCatchBlockRequired || isFinallyBlockRequired)
{
_context.ReturnLabel = emit.DefineLabel();
emit.BeginExceptionBlock();
}
Build(BuildStep.Before, builders);
Build(BuildStep.Build, builders);
Build(BuildStep.After, builders);
if (isCatchBlockRequired || isFinallyBlockRequired)
{
emit.MarkLabel(_context.ReturnLabel);
_context.ReturnLabel = returnLabel;
}
// End catch block.
//
if (isCatchBlockRequired)
{
emit
.BeginCatchBlock(typeof(Exception));
_context.ReturnLabel = emit.DefineLabel();
_context.Exception = emit.DeclareLocal(typeof(Exception));
emit
.stloc(_context.Exception);
Build(BuildStep.Catch, builders);
emit
.rethrow
.end();
emit.MarkLabel(_context.ReturnLabel);
_context.ReturnLabel = returnLabel;
_context.Exception = null;
}
if (isFinallyBlockRequired)
{
emit.BeginFinallyBlock();
_context.ReturnLabel = emit.DefineLabel();
Build(BuildStep.Finally, builders);
emit.MarkLabel(_context.ReturnLabel);
_context.ReturnLabel = returnLabel;
}
if (isCatchBlockRequired || isFinallyBlockRequired)
{
emit.EndExceptionBlock();
}
Build(BuildStep.End, builders);
EndEmitMethod();
}
private bool IsApplied(IAbstractTypeBuilder builder, AbstractTypeBuilderList builders, BuildStep buildStep)
{
_context.Step = buildStep;
return(builder.IsApplied(_context, builders));
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
return(context.IsAfterStep && context.BuildElement == BuildElement.Type == TargetElement is TypeHelper);
}